CN111726856A - Power headroom report triggering method and device - Google Patents

Abstract

An embodiment of the present application provides a method for triggering a power headroom report, which relates to the field of wireless communications. A terminal device can trigger a PHR when a PHR trigger condition is met, and send the PHR to a network device, where the PHR trigger condition includes any of the following: a side chain or, the side link connection is released; or, the side link of the terminal equipment is activated; or, the activation of a side link carrier of the terminal equipment; or, the terminal equipment starts to have side link resources for transmitting data; or , the terminal device starts to have side link transmission; or, the first timer expires, the terminal device has side link resources for transmitting new data, and for at least one active carrier of the terminal device, the change value of the side link path loss is greater than or equal to the first parameter value; or, the terminal device performs multicast communication with other terminal devices and satisfies the first condition; or, the resource acquisition mode is switched; or, the change value of the number of transmission resources is greater than or equal to the second parameter value.

Description

Power headroom report triggering method and device

technical field

The present application relates to the field of wireless communication, and in particular, to a method and device for triggering a power headroom report.

Background technique

Uplink power control in wireless systems is very important. Through uplink power control, it can not only ensure the quality of data sent by the terminal equipment in the cell to the network equipment, but also reduce the interference of the terminal equipment to other terminal equipment in the system. Extend the battery life of the terminal equipment.

Power control can be divided into open-loop power control and closed-loop power control. Among them, open-loop power control means that the terminal equipment determines the size of the transmit power without any participation of the network equipment; closed-loop power control means that the terminal equipment adjusts the transmit power according to the transmission power control (TPC) of the network equipment, and the closed-loop power control Power control requires the participation of network equipment, and the terminal equipment also reports its power headroom (PH) to the network equipment through a power headroom report (PHR), so that the network equipment can report its power headroom (PH) to the network equipment according to the PHR of the terminal equipment. Instruct the terminal equipment to adjust the power.

A closed-loop power control mechanism exists for the uplink in the long term evolution (long term evolution, LTE) system and the uplink in the new radio access (new radio access, NR) system. That is, the terminal device will report its own PH to the network device, and the network device determines subsequent uplink scheduling for the terminal device according to the PH reported by the terminal device. If the PH reported by the terminal equipment shows that the terminal equipment has no power to support more uplink transmission, then the network equipment cannot allocate more uplink resources to the terminal equipment during subsequent scheduling; if the PH reported by the terminal equipment shows that the terminal equipment still has power To support more uplink transmission, the network device can allocate more uplink resources to the terminal device to increase the uplink transmission rate.

The side link in the LTE system only supports broadcasting, so the side link in the LTE system does not have a closed-loop power control mechanism, that is, there is no power headroom reporting of the side link. The side link in the NR system can support unicast, multicast and broadcast, so the side link in the NR system needs a closed-loop power control mechanism, that is, the power headroom information related to the side link needs to be reported. However, there is currently no side link. Link-related power headroom information reporting method.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a PHR triggering method and device, and the terminal device can trigger the PHR when the PHR triggering condition is satisfied, and send the PHR to the network device.

For the side link, after the terminal device sends the PHR to the network device once, before the terminal device obtains the next uplink resource, the terminal device may allocate multiple side link resources, and the last reported PHR can only be used for the connection. The next one side link resource allocation provides guidance, but cannot provide guidance for multiple side link resource allocations. Therefore, if the terminal device triggers the PHR according to the PHR trigger condition, if there is no uplink resource available for sending the PHR, the terminal device needs to request the uplink resource and send the PHR on the requested uplink resource.

To achieve the above object, the embodiments of the present application adopt the following technical solutions:

In a first aspect, an embodiment of the present application provides a PHR triggering method, the method includes: a terminal device determines a PHR trigger; the terminal device sends the PHR to a network device; if any one of the following conditions is satisfied, the PHR triggers: a side link connection or, the side link connection is released; or, the side link of the terminal device is activated; or, the activation of a side link carrier of the terminal device; or, the terminal device starts to have side link resources for data transmission; Or, the terminal device starts to have side link transmission; or, the first timer expires, the terminal device has side link resources for transmitting data, and for at least one active carrier of the terminal device, the side link path The loss change value is greater than or equal to the first parameter value; or, the terminal device performs multicast communication with other terminal devices and meets the first condition; or, the resource acquisition method is switched; or, the change value of the number of transmission resources is greater than or equal to the second parameter value; or, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value; wherein, the side link is a directly connected wireless communication link between the terminal device and other terminal devices road. Based on this solution, the terminal device can trigger the PHR when the PHR triggering condition is met, and send the PHR to the network device. The network device can perform power adjustment instructions according to the PHR reported by the terminal device, and reasonably perform power control.

In a possible implementation manner, the establishment of the side link connection includes: starting the establishment of the side link connection or ending the establishment of the side link connection. Based on this solution, the terminal device can trigger the PHR when the establishment of the side link connection starts or when the establishment of the side link connection ends, and sends the PHR to the network device.

In a possible implementation manner, the conversion of the resource acquisition mode includes: converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; or, converting the resource acquisition mode supporting the first mode into The resource acquisition methods supporting the first mode and the second mode are supported; or, the resource acquisition methods supporting the first mode and the second mode are converted into resource acquisition methods supporting the second mode. Based on this solution, the terminal device can trigger the PHR when the above-mentioned conversion of the resource acquisition mode occurs, and send the PHR to the network device.

In a possible implementation manner, the resource acquisition method in the first mode includes: the network device configures sidelink transmission resources for the terminal device, and the resource acquisition method in the second mode includes: the terminal device selects sidelink transmission resources or, the resource acquisition method in the second mode includes: the network device configures sidelink transmission resources for the terminal device, and the resource acquisition method in the first mode includes: the terminal device selects sidelink transmission resources. Based on this solution, the resource acquisition method of the terminal device in the first mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition method in the second mode includes: the terminal device selects the side link transmission resources; The resource acquisition method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition method in the first mode includes: when the terminal device selects the side link transmission resource, and when the resource acquisition mode is switched, the terminal device triggers PHR, and send the PHR to the network device.

In a possible implementation manner, the first condition includes: for M side links for multicast communication performed by the terminal device, the terminal device obtains a change value of the side link path loss of each side link, a total of M side link path loss variation values of the M side links; the number of the M side link path loss variation values greater than or equal to the fourth parameter value is greater than or equal to N; or, the M side link path loss variation values The ratio of the number of values greater than or equal to the fifth parameter value to M is greater than or equal to R; or, the average value of the link path loss variation values of the M edges is greater than or equal to the sixth parameter value; or, the M edges The maximum value of the link path loss variation values is greater than or equal to the seventh parameter value; or, the maximum value of the M edge link path loss variation values is greater than or equal to the eighth parameter value, wherein the maximum value variation value Used to indicate the change between two obtained maximum values; where M is a positive integer, N is a non-negative number, and R is greater than or equal to 0 and less than or equal to 1. Based on this solution, the terminal device performs multicast communication with other terminal devices, and when the above-mentioned first condition is satisfied, the terminal device triggers the PHR and sends the PHR to the network device.

In a possible implementation manner, obtaining, by the terminal device, the side link path loss variation value of each side link includes: for each side link, determining, for each side link, which of the measured side link path loss variation values of the carrier. maximum value, determine the maximum value as the side link path loss variation value of the side link; or, for each side link, determine the minimum value among the side link path loss variation values of the measured carrier, and determine the The minimum value is the side link path loss variation value of the side link; or, for each side link, determine the average value of the side link path loss variation value of the measured carrier, and determine the average value as the side link path loss variation value The value of the path loss change of the side link of the road. Based on this scheme, the terminal device performs multicast communication with other terminal devices, which satisfies the first condition, and the side link path loss change value of the side link is the maximum value of the side link path loss change values of the carrier, the When the minimum value of the side link path loss variation values or the average value of the side link path loss variation values of the carrier, the terminal device triggers the PHR and sends the PHR to the network device.

In a possible implementation manner, the side link path loss variation value of the carrier includes: the path loss measured at the current side link path loss reference and the path measured at the side link path loss reference during the last PHR transmission The change between losses; or, the change between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference at the time of the last power headroom PH calculation or PHR packing ; or, the change between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference at the last PHR trigger. Based on this scheme, the terminal equipment performs multicast communication with other terminal equipment, which satisfies the first condition, and the side link path loss change value of the carrier includes the path loss measured at the current side link path loss reference and the last PHR transmission at the time of the last PHR transmission. Variation between the path loss measured at the side link path loss reference; or, the path loss measured at the current side link path loss reference and the last power headroom PH calculation or PHR packaging at the side link path loss reference The change between the path loss measured at the edge link path loss reference and the path loss measured at the side link path loss reference at the last PHR trigger, The terminal device triggers the PHR and sends the PHR to the network device.

In a possible implementation manner, the power backoff change value includes: a change value between the currently required power backoff and the power backoff required when the terminal device sent the PHR last time; or, the currently required power backoff The change value between the power backoff and the last time the terminal device calculates the PH or the power backoff required when the PHR is packaged; or, the change between the current required power backoff and the power backoff required when the terminal device triggers the PHR last time value. Based on this solution, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the power backoff variation value includes the current required power backoff and the power backoff required by the terminal device when sending PHR last time. The change value between the back-offs; or, the change value between the currently required power back-off and the power back-off required by the last time the terminal device calculates the PH or the packaged PHR; or, the current required power back-off and the last time the terminal device When the change value between the power backoffs required when triggering the PHR, trigger the PHR and send the PHR to the network device.

In a possible implementation manner, the power backoff change value being greater than or equal to the third parameter value includes: a duration for which the power backoff change value is greater than or equal to the third parameter value is greater than or equal to a first preset time . Based on this solution, when there is a side link carrier whose power backoff variation value is greater than or equal to the third parameter value and the duration is greater than or equal to the first preset time, the terminal device triggers the PHR and sends the PHR to the network device.

In a possible implementation manner, the terminal device triggers a request, and the request is used to request uplink resources for the PHR. Based on this solution, after the terminal device triggers the PHR, it can trigger a request to request uplink resources for the PHR, and then send the PHR to the network device.

In a possible implementation manner, before the terminal device triggers the request, the method further includes: the terminal device determines that there is no uplink resource for PHR. Based on this solution, after the terminal device triggers the PHR, it can determine that there is no uplink resource for the PHR, then trigger a request to request the uplink resource for the PHR, and then send the PHR to the network device on the requested uplink resource.

In a possible implementation manner, the request is a cache status report BSR, or the request is a scheduling request SR. Based on this solution, after the terminal device triggers the PHR, it can request uplink resources for the PHR by triggering the BSR or SR, and then send the PHR to the network device.

In a possible implementation manner, when the request is a BSR, the method further includes: the terminal device fails to request uplink resources for the PHR through the BSR, the terminal device triggers the SR, and the SR is used to request uplink resources for the PHR resource. Based on this solution, after the terminal device triggers the PHR, if it fails to request uplink resources for the PHR by triggering the BSR, it can request the uplink resources for the PHR by triggering the SR, and then send the PHR to the network device.

In a possible implementation manner, the BSR includes any one of the following: a padding BSR, a regular BSR, and a periodic BSR. Based on this solution, if the request includes a BSR, after triggering the PHR, the terminal device can request uplink resources for the PHR by triggering the padding BSR, the regular BSR or the periodic BSR, and then send the PHR to the network device.

In a possible implementation manner, the method further includes: the terminal device receives SR configuration information from a network device, where the SR configuration information is used to configure an SR, and the SR is used to request uplink resources for the PHR; or, the The terminal device stores the SR configuration information. Based on this solution, the terminal device can request an uplink resource suitable for sending PHR from the network device by triggering the SR configured according to the SR configuration information, and then send the PHR to the network device on the requested uplink resource.

In a possible implementation manner, the PHR includes power headroom information of the side link of the terminal device. Based on this solution, after the terminal device triggers the PHR, it can send the power headroom information of the side link to the network device.

In a possible implementation manner, before the terminal device sends the PHR to the network device, the terminal device determines first information, where the first information is used to instruct the terminal device to report the power headroom information of the side link. Based on this solution, if the first information instructs the terminal device to report the power headroom information of the side link, the terminal device can send the PHR to the network device after triggering the PHR.

In a possible implementation manner, the terminal device determines the first information according to the indication information sent by the network device; or, the terminal device determines the first information according to pre-stored indication information. Based on this solution, the terminal device can determine the first information according to the indication information sent by the network device, or determine the first information according to the pre-stored indication information. If the first information instructs the terminal device to report the power headroom information of the side link, the terminal device After the PHR is triggered, the PHR can be sent to the network device. In a possible implementation manner, the first timer is a prohibition timer phr-ProhibitTimer reported by the uplink PHR; or, the first timer is a prohibition timer independent of the uplink PHR reporting, for example , the prohibit timer phr-ProhibitTimer reported by the PHR of the side link, wherein the uplink is a wireless communication link from the terminal device to the network device. Based on this solution, the terminal device may expire when the first timer expires, the terminal device has side link resources for data transmission, and for at least one active carrier of the terminal device, the change value of the side link path loss is greater than or equal to the first parameter value, where the first timer is a prohibition timer for uplink PHR reporting; or, when the first timer is a prohibition timer independent of uplink PHR reporting, the terminal device triggers the PHR and sends a notification to the network Device sends PHR.

In a second aspect, an embodiment of the present application provides a terminal device, the terminal device includes: a processor and a transmitter; the processor is used for the terminal device to determine a PHR trigger; the transmitter is used for the terminal device to send to a network device The PHR; if any of the following conditions are met, the PHR triggers: a side link connection is established; or, a side link connection is released; or, the side link of the terminal device is activated; or, a side link carrier of the terminal device or, the terminal device starts to have side link resources for data transmission; or, the terminal device starts to have side link transmission; or, the first timer expires, and the terminal device has side link resources for data transmission , and for at least one active carrier of the terminal device, the change value of the side link path loss is greater than or equal to the first parameter value; or, the terminal device performs multicast communication with other terminal devices and satisfies the first condition; or, The resource acquisition mode is switched; or, the change value of the number of transmission resources is greater than or equal to the second parameter value; or, the terminal device has a side link carrier whose power backoff change value is greater than or equal to the third parameter value; A link is a direct wireless communication link between a terminal device and other terminal devices.

In a third aspect, the present application provides a communication device, the communication device may include: at least one processor, and the involved program instructions are executed in the at least one processor to implement the method according to the first aspect and any design thereof the capabilities of the terminal device in . Optionally, the communication device may further include at least one memory, and the memory stores the related program instructions. The communication apparatus may be the method of the first aspect and the terminal device in any design thereof.

In a fourth aspect, the present application provides a system chip, which can be applied to a communication device, and the system chip includes: at least one processor, and the involved program instructions are executed in the at least one processor, so as to realize the method according to the fourth aspect. The method of an aspect and the functionality of an end device in any design thereof. Optionally, the system chip may further include at least one memory, and the memory stores related program instructions.

In a fifth aspect, the present application provides a computer storage medium, which can be applied to a communication device, and program instructions are stored in the computer-readable storage medium. The method and the functionality of the terminal device in any design thereof.

In a sixth aspect, the present application provides a computer program product, the computer program product includes program instructions, and when the involved program instructions are executed, the method according to the first aspect and the functions of the terminal device in any design thereof are implemented.

In a seventh aspect, the present application provides a communication system, which may include any one or more of the following: a terminal device as in the second aspect, or a communication device as in the third aspect, or as the fourth aspect The system-on-chip in the , or the computer storage medium as in the fifth aspect, or the computer program product as in the sixth aspect.

It can be understood that any of the devices, system chips, computer storage media, computer program products or communication systems provided above are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to. The beneficial effects in the corresponding method will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application;

3 is a schematic flowchart 1 of a PHR triggering method provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart 1 of a method for obtaining a path loss according to an embodiment of the present application;

FIG. 5 is a second schematic flowchart of a method for obtaining a path loss according to an embodiment of the present application;

FIG. 6 is a third schematic flowchart of a method for obtaining a path loss according to an embodiment of the present application;

7 is a second schematic flowchart of a PHR triggering method provided by an embodiment of the present application;

FIG. 8 is a schematic flowchart three of a PHR triggering method provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram 1 of a terminal device provided by an embodiment of the present application;

FIG. 10 is a second schematic structural diagram of a terminal device provided by an embodiment of the present application;

FIG. 11 is a third schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed ways

As shown in FIG. 1 , it is a schematic structural diagram of a communication system 100 according to an embodiment of the present application. In FIG. 1, the communication system 100 includes network devices 101 and 102, and terminal devices 103-109.

A communication link for direct communication between a terminal device and other terminal devices may be referred to as a side link or a sidelink (sidelink, SL). As shown in FIG. 1 , the direct-connected wireless communication link between the terminal device 103 and the terminal device 104 , or the direct-connected wireless communication link between the terminal device 105 and the terminal device 106 .

The wireless communication link between the terminal device and the network device may be called an uplink (uplink, UL) or a downlink (downlink, DL), such as the direct connection between the network device 101 and the terminal device 103 in FIG. 1 . A wireless communication link, or a direct wireless communication link between the network device 102 and the end device 105 . Since the UL or DL interface can be called a Uu interface, the UL or DL can be called a Uu interface link.

The network device 101, and/or the network device 102 provides wireless access services for the terminal devices 103-109. Specifically, each network device corresponds to a service coverage area, and a terminal device entering the area can communicate with the network device through the Uu port to receive wireless access services provided by the network device.

The network device 101 or 102 may be a transmission reception point (TRP), a base station, a relay station, an access point, or the like. The network device 101 or 102 may be a network device in a 5G communication system or a network device in a future evolution network, and may also be: a global system for mobile communication (GSM) or code division multiple access (code division multiple access, A base transceiver station (BTS) in a CDMA) network, a NB (NodeB) in a wideband code division multiple access (WCDMA), or a long term evolution (LTE) ) in the eNB or eNodeB (evolutional NodeB). The network device 101 or 102 may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.

The terminal devices 103-109 may be portable computers (such as mobile phones), notebook computers, personal computers (PCs), wearable electronic devices (such as smart watches), tablet computers, augmented reality (AR)/virtual reality ( virtual reality, VR) equipment, vehicles, on-board modules, on-board computers, on-board chips, on-board communication systems, wireless terminals in industrial control, etc.

It should be noted that the communication system 100 shown in FIG. 1 is only used for example, and is not used to limit the technical solution of the present application. Those skilled in the art should understand that, in a specific implementation process, the communication system 100 may also include other devices, and the number of network devices and terminal devices may also be determined according to specific needs. Each network element in FIG. 1 may also be connected through other interfaces.

Optionally, each network element in FIG. 1 in this embodiment of the present application, such as the network device 102 or the terminal device 107 , may be a functional module in one device. It can be understood that the above functions can be either network elements in hardware devices, such as communication chips in mobile phones, or software functions running on dedicated hardware, or virtualized virtual devices instantiated on a platform (eg, a cloud platform). function.

For example, each network element in FIG. 1 may be implemented by the communication device 200 in FIG. 2 . FIG. 2 is a schematic diagram of a hardware structure of a communication device applicable to an embodiment of the present application. The communication device 200 includes at least one processor 201 , a communication line 202 , a memory 203 and at least one communication interface 204 .

The processor 201 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.

Communication line 202 may include a path, such as a bus, for transferring information between the components described above.

Communication interface 204, using any transceiver-like device, for communicating with other devices or communication networks, such as an Ethernet interface, a radio access network (RAN), a wireless local area network (WLAN) )Wait.

Memory 203 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types of information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer any other medium taken, but not limited to this. The memory may exist independently and be connected to the processor through the communication line 202 . The memory can also be integrated with the processor. The memory provided by the embodiments of the present application may generally be non-volatile. The memory 203 is used for storing the computer-executed instructions involved in executing the solution of the present application, and the execution is controlled by the processor 201 . The processor 201 is configured to execute the computer-executed instructions stored in the memory 203, thereby implementing the method provided by the embodiments of the present application.

Optionally, the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.

In a specific implementation, as an embodiment, the processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2 .

In a specific implementation, as an embodiment, the communication device 200 may include multiple processors, such as the processor 201 and the processor 207 in FIG. 2 . Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a specific implementation, as an embodiment, the communication device 200 may further include an output device 205 and an input device 206 . The output device 205 is in communication with the processor 201 and can display information in a variety of ways. For example, the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait. Input device 206 is in communication with processor 201 and can receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.

The above-mentioned communication device 200 may be a general-purpose device or a dedicated device. In a specific implementation, the communication device 200 may be a desktop computer, a portable computer, a network server, a PDA (personal digital assistant, PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure in FIG. 2 . This embodiment of the present application does not limit the type of the communication device 200 .

The PHR triggering method provided by the embodiment of the present application will be described in detail below with reference to FIG. 1 and FIG. 2 .

It should be noted that the PHR triggering method provided in the embodiment of the present application can be applied to multiple fields, for example: the field of unmanned driving, the field of automatic driving, the field of assisted driving, the field of intelligent driving, the field of connected driving, and the field of intelligent connected driving , car sharing, etc.

It should be noted that the names of messages between network elements or the names of parameters in the messages in the following embodiments of the present application are just an example, and other names may also be used in specific implementations, which are not specified in the embodiments of the present application. limited.

It should be noted that, in the description of this application, words such as "first" or "second" are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor should it be understood as indicating or implied order. The "first timer" in this application has timers with different numbers, and the numbers are only used for contextual convenience, and the different sequence numbers themselves have no specific technical meaning, for example, the first timer, the second timer etc., can be understood as one or any one of a series of timers. For example, the first reference signal, the second reference signal, etc. may be understood as one or any one of a series of reference signals. It can be understood that, during specific implementation, timers or reference signals with different numbers may also be the same timer or the same type of timer, which is not limited in this application.

It can be understood that, in the embodiments of the present application, the terminal device and/or the network device may perform some or all of the operations in the embodiments of the present application. These operations or operations are only examples, and the embodiments of the present application may also perform other operations or various operations. Variation of operations. In addition, various operations may be performed in different orders presented in the embodiments of the present application, and it may not be necessary to perform all the operations in the embodiments of the present application.

It can be understood that where "carrier" is used as an example in this application, "carrier" can be replaced with "cell". For example, "carrier of Uu interface link" can be used as "cell of Uu interface link". Replacement, which will not be repeated here.

As shown in FIG. 3 , a PHR triggering method provided by an embodiment of the present application, the PHR triggering method includes operation 301 and operation 302 .

In operation 301, the terminal device determines the PHR trigger.

The terminal device may be any terminal device in FIG. 1 , for example, the terminal device 103 or the terminal device 105 .

The terminal device may maintain one or more independent medium access control (MAC) entities for the side link; or, the terminal device may not maintain an independent MAC entity for the side link.

Exemplarily, in the embodiments of the present application, if any one of the following conditions 1-15 is satisfied, the terminal device determines the PHR trigger:

Condition 1: The edge link connection is established.

The side link may be a wireless communication link established by the terminal device and other terminal devices in FIG. 1 . For example, the terminal device may be the terminal device 103 in FIG. 1 , and the terminal device may also be the terminal device 105 in FIG. 1 . The other terminal devices may be the terminal device 104 in FIG. 1 , and the other terminal devices may also be the terminal devices 106 - 109 in FIG. 1 .

Optionally, the establishment of the side link connection may be the establishment of the side link connection of the terminal device;

Optionally, the establishment of a side link connection may be the establishment of a side link connection of the terminal device.

Optionally, the establishment of the side link connection may be the establishment of the side link connection of the MAC entity of the terminal device.

Optionally, the establishment of the side link connection may be the establishment of a side link connection of the MAC entity of the terminal device.

Optionally, the establishment of a side link connection may be the establishment of a side link connection of a MAC entity of the terminal device.

Optionally, the establishment of a side link connection may be the establishment of a side link connection of a MAC entity of the terminal device.

As an example, the side link connection establishment may include the start of the side link connection establishment. For example, the terminal device may trigger the PHR before sending the first sidelink connection establishment request message to other terminal devices; or, the terminal device may trigger the PHR when sending the first sidelink connection establishment request message to other terminal devices; or, The terminal device may trigger the PHR after sending the first side link connection establishment request message to other terminal devices; or, the terminal device may trigger the PHR before receiving the second side link connection establishment request message sent by other terminal devices; or, the terminal device The device may trigger the PHR when receiving the second sidelink connection establishment request message sent by the other terminal device; or the terminal device may trigger the PHR after receiving the second sidelink connection establishment request message sent by the other terminal device.

As another example, the side link connection establishment may include the end of the side link connection establishment. For example, the terminal device may trigger the PHR before receiving the first sidelink connection establishment response message sent by other terminal devices; or, the terminal device may trigger the PHR when receiving the first sidelink connection establishment response message sent by other terminal devices; Alternatively, the terminal device may trigger the PHR after receiving the first sidelink connection establishment response message sent by the other terminal device; or, the terminal device may trigger the PHR before sending the second sidelink connection establishment response message to the other terminal device; Alternatively, the terminal device may trigger the PHR when sending the second sidelink connection establishment response message to other terminal devices; alternatively, the terminal device may trigger the PHR after sending the second sidelink connection establishment response message to other terminal devices; or, The terminal device can trigger the PHR before sending the first side link connection establishment complete message to other terminal devices; or, the terminal device can trigger the PHR when sending the first side link connection establishment complete message to other terminal devices; or, the terminal device can trigger the PHR The PHR may be triggered after sending the first side link connection establishment complete message to the other terminal equipment; alternatively, the terminal equipment may trigger the PHR before receiving the second side link connection establishment complete message sent by the other terminal equipment; or, the terminal equipment may The PHR is triggered when receiving the second side link connection establishment complete message sent by other terminal equipment; or, the terminal equipment may trigger the PHR after receiving the second side link connection establishment complete message sent by other terminal equipment.

Wherein, optionally, the first side link connection establishment request message and the second side link connection establishment request message may be radio resource control (Radio Resource Control, RRC) messages, and the first side link connection establishment response The message and the second sidelink connection establishment response message may be RRC response messages, and the first sidelink connection establishment complete message and the second sidelink connection establishment complete message may be RRC response messages.

Wherein, optionally, the RRC message may be the RRC message of the side link; the RRC response message may be the RRC response message of the side link.

Condition 2. The edge link connection is released.

Optionally, the release of the side link connection may be the release of the side link connection of the terminal device.

Optionally, the release of the side link connection may be the release of a side link connection of the terminal device.

Optionally, the release of the side link connection may be the release of the side link connection of the MAC entity of the terminal device.

Optionally, the side link connection release may be a side link connection release of the MAC entity of the terminal device.

Optionally, the release of the side link connection may be the release of the side link connection of a MAC entity of the terminal device.

Optionally, the side link connection release may be a side link connection release of a MAC entity of the terminal device.

As an example, the side link connection release may include the start of the side link connection release, for example, the terminal device may trigger the PHR before sending the first side link connection release request message to other terminal devices; The PHR is triggered when other terminal devices send the first side link connection release request message; or, the terminal device may trigger the PHR after sending the first side link connection release request message to other terminal devices; The PHR is triggered before the second side link connection release request message sent by the device; alternatively, the terminal device may trigger the PHR when receiving the second side link connection release request message sent by other terminal devices; The PHR is triggered after the second sidelink connection release request message sent by the terminal device.

As another example, the release of the side link connection may include the end of the release of the side link connection, for example, the terminal device may trigger the PHR before receiving the first side link connection release response message sent by other terminal devices; or, the terminal device may The PHR is triggered when receiving the first side link connection release response message sent by other terminal equipment; or, the terminal equipment can trigger the PHR after receiving the first side link connection release response message sent by other terminal equipment; or, the terminal equipment can trigger the PHR The PHR may be triggered before sending the second sidelink connection release response message to other terminal devices; alternatively, the terminal device may trigger the PHR when sending the second sidelink connection release response message to other terminal devices; Trigger PHR after sending the second side link connection release response message to other terminal equipment; alternatively, the terminal equipment may trigger PHR before sending the first side link connection release complete message to other terminal equipment; The PHR is triggered when the terminal device sends the first side link connection release complete message; alternatively, the terminal device can trigger the PHR after sending the first side link connection release complete message to other terminal devices; or, the terminal device can receive other terminal devices. Trigger the PHR before sending the second side link connection release complete message; or, the terminal device can trigger the PHR when receiving the second side link connection release complete message sent by other terminal devices; or, the terminal device can receive other terminals The PHR is triggered after the second side link connection release complete message sent by the device.

Wherein, optionally, the first side link connection release request message and the second side link connection release request message may be RRC messages, the first side link connection release response message and the second side link connection The release response message may be an RRC response message, and the first sidelink connection release complete message and the second sidelink connection release complete message may be RRC response messages.

Wherein, optionally, the RRC message may be the RRC message of the side link; the RRC response message may be the RRC response message of the side link.

Condition 3: The side link of the terminal device is activated or deactivated.

It should be noted that the activation or deactivation of the side link of the terminal device may be the activation or deactivation of one side link of the terminal device.

The activation or deactivation of the side link of the terminal device may be the activation or deactivation of the side link of the MAC entity of the terminal device.

The activation or deactivation of a side link of the terminal device may be the activation or deactivation of a side link of the MAC entity of the terminal device.

The activation or deactivation of the side link of the terminal device may be the activation or deactivation of the side link of a MAC entity of the terminal device.

The activation or deactivation of a side link of the terminal device may be the activation or deactivation of a side link of a MAC entity of the terminal device.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the side link activation of the terminal device includes the first occurrence of at least one side link carrier activation on the side link; or, the side link begins to have available side link resources; or, the side link The path starts to have sidelink resources for transmission, or the sidelink starts to have sidelink resources other than the sidelink resources for reception; or, the terminal device starts to transmit an edge on the sidelink link data.

The first occurrence of at least one side link carrier activation on the side link may include: the first occurrence of at least one side link carrier on the side link begins to have available side link resources; or, the side link The first occurrence of at least one sidelink carrier on the link begins to have sidelink resources available for transmission, or, the first occurrence of at least one sidelink carrier on the sidelink begins to have sidechain resources other than those used for reception side link resources other than the channel resources, or the terminal equipment can start to send side link data on the side link carrier when the side link appears for the first time.

It should be noted that the first occurrence of at least one side link carrier on the side link begins to have available side link resources may include: the first occurrence of at least one side link carrier on the side link is never available. The used side link resources are converted into available side link resources. The first occurrence of at least one sidelink carrier on the sidelink begins to have sidelink resources available for transmission may include the first occurrence of at least one sidelink carrier on the sidelink There is no sidelink available for transmission Path resources are converted into side link resources available for transmission. The first occurrence of at least one sidelink carrier on the sidelink begins with sidelink resources other than the sidelink resources used for reception may include the first occurrence of at least one sidelink carrier on the sidelink Transitions from having no sidelink resources other than those used for reception to having sidelink resources other than those used for reception. The first occurrence of the sidelink terminal device begins to transmit sidelink data on the sidelink carrier may include the first occurrence of the sidelink terminal device never transmits the sidelink on the sidelink carrier The data is converted so that sidelink data can be transmitted on the sidelink carrier.

Wherein, that the side link starts to have available side link resources may include the transition of the side link from having no available side link resources to the side link having available side link resources.

Wherein, that the side link initially has side link resources available for transmission may include the transition of the side link from having no side link resources available for transmission to the side link having side link resources available for transmission.

Wherein, the side link starts with side link resources other than the side link resources used for receiving, which may include the transition of the side link from having no side link resources other than the side link resources used for receiving to The sidelink has sidelink resources other than the sidelink resources used for reception.

Where the terminal device can initially send sidelink data on the sidelink may include the terminal device switching from being unable to send sidelink data on the sidelink to the terminal device being able to send sidelink data on the sidelink carrier data.

It should be noted that, if the terminal device transmits and/or receives side link data on the side link by means of time division duplexing (TDD), the side link may be used for receiving side link data except for receiving side link data. symbols, time slots, subframes, or other symbols, time slots, subframes, or frames of the channel data (for example, the sidelink may have symbols, time slots, subframes, or frames for transmitting sidelink data, Or the sidelink may have symbols, time slots, subframes or frames that can be used to receive and transmit sidelink data, or the sidelink may also have other types of symbols, time slot, subframe or frame). If the terminal device transmits and/or receives data on a side link in a frequency division duplexing (frequency division duplexing, FDD) manner, there may be a transmit carrier on the side link.

Exemplarily, when a side link of the MAC entity of the terminal device is activated, the side link starts to have side link resources, and the side link resources can be used to send side link data, and the terminal device triggers the PHR.

Optionally, the side link deactivation of the terminal device includes a side link carrier that is not activated at the beginning of the side link; or, all side link carriers of the side link are deactivated; or, the side link starts No sidelink resources are available; alternatively, the sidelink begins with no sidelink resources available for transmission; alternatively, the sidelink begins with no sidelink resources other than those used for reception ; or, the terminal device is initially unable to transmit sidelink data on the sidelink.

Wherein, the side link carriers that are not activated at the beginning of the side link may include side link carriers that are not available for the side link at the beginning; or, the side link starts without a side link carrier other than the side link carrier used to receive side link resources; or, the side link starts without a side link carrier capable of transmitting side link data side link carrier.

It should be noted that, the side link carrier with no available side link resources at the beginning of the side link may include the side link switching from the side link carrier with available side link resources to the side link without the side link. Sidelink carriers for available sidelink resources. The sidelink begins with no sidelink carrier available for transmitting sidelink resources may include the sidelink transitioning from a sidelink carrier with available transmitting sidelink resources to the sidelink having no available transmitting sidechains side link carrier of the channel resource. The sidelink starts with no sidelink carriers other than the sidelink carrier for receiving sidelink resources may include the sidelink from having no sidelink carriers other than the sidelink carrier for receiving sidelink resources The sidelink carrier is converted to the sidelink having no sidelink carriers other than the sidelink carrier used to receive the sidelink resources. The sidelink starts without a sidelink carrier capable of transmitting sidelink data may include the sidelink switching from a sidelink carrier capable of transmitting sidelink data to a sidelink without sidelink data. side link carrier.

where all side link carriers of the side link are deactivated, which may include side link carriers for which all carriers of the side link have no available side link resources; or, all carriers of the side link are unavailable a side link carrier used to transmit side link resources; or, all carriers of a side link have no side link carriers other than the side link carrier used to receive side link resources; or, all of the side link carriers None of the carriers has a sidelink carrier capable of transmitting sidelink data.

Wherein, that the side link has no available side link resources at first may include that the side link is switched from having available side link resources to the side link having no available side link resources.

Wherein, the side link has no side link resources available for transmission at the beginning may include the transition of the side link from having side link resources available for transmission to the side link having no side link resources available for transmission.

Wherein, starting the side link without side link resources other than the side link resources used for receiving may include the transition of the side link from having side link resources other than the side link resources used for receiving to The sidelink has no sidelink resources other than the sidelink resources for reception.

Wherein, the initial inability of the terminal device to send side link data on the side link may include the transition of the terminal device from being able to send side link data on the side link to the terminal device being unable to send side link data on the side link .

Exemplarily, when a side link of the MAC entity of the terminal device is deactivated, the side link starts to have no side link resources available for sending side link data, and the terminal device triggers the PHR.

Condition 4: Activation or deactivation of one side link carrier of the terminal equipment.

It should be noted that the activation or deactivation of one side link carrier of the terminal device may be the activation or deactivation of one side link carrier of the MAC entity of the terminal device.

It should be noted that the activation or deactivation of a side link carrier of the terminal device may be the activation or deactivation of a side link carrier of a MAC entity of the terminal device.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the activation of a side link carrier of the terminal device may include that the side link carrier starts to have available side link resources; or, the side link carrier starts to have available side link resources for transmission, or , the sidelink carrier starts to have sidelink resources other than the sidelink resources used for reception, or the terminal device starts to transmit sidelink data on the sidelink carrier.

Wherein, the side link carrier having available side link resources at first may include switching from no available side link resources to the side link carrier having available side link resources.

Wherein, the side link carrier having available side link resources for transmission may include the transition of the side link carrier from having no side link resources available for transmission to the side link having available side link resources for transmission.

Wherein, the side link carrier starts to have side link resources other than the side link resources used for reception, which may include that the side link carrier never has side link resources other than the side link resources used for reception. Converting to the sidelink carrier has sidelink resources in addition to the sidelink resources used for reception.

Wherein, the terminal equipment can initially send sidelink data on the sidelink carrier may include that the terminal equipment can never send sidelink data on the sidelink carrier to convert the terminal equipment can send sidelink data on the sidelink carrier. Send side link data on the

It should be noted that, if the terminal device transmits and/or receives side link data on the side link carrier by means of TDD, the side link carrier has symbols, time slots, A symbol, slot, subframe, or frame outside of a subframe or frame (e.g., the sidelink carrier may have a symbol, slot, subframe, or frame for transmitting sidelink data, or the sidelink carrier may There are symbols, slots, subframes or frames that can be used to transmit and receive sidelink data, or the sidelink carrier can have other types of symbols, slots, subframes, or frame); if the terminal device transmits and/or receives data on the side link carrier by means of FDD, the side link carrier may be the transmission carrier.

Exemplarily, when a side link carrier of the MAC entity of the terminal device is activated, the side link carrier starts to have side link resources, and the side link resources can be used to send side link data, and the terminal device triggers PHR.

Optionally, the deactivation of a side link carrier of the terminal device includes that the side link carrier has no available side link resources at first; the side link carrier has no available side link resources for transmission, or, the side link carrier starts to have no available side link resources. The sidelink carrier begins to have no sidelink resources other than the sidelink resources for reception, or the terminal device begins to be unable to transmit sidelink data on the sidelink carrier.

Wherein, the side link carrier having no available side link resources at first may include switching from the side link carrier having available side link resources to the side link carrier having no available side link resources.

Wherein, the side link carrier does not have side link resources available for transmission at first, which may include the transition of the side link carrier from having side link resources available for transmission to the side link carrier having no side link resources available for transmission. .

Wherein, the side link carrier does not have side link resources other than the side link resources for reception at the beginning, and the side link carrier may include side link resources other than the side link resources for reception from the side link carrier. The transition is that the sidelink carrier has no sidelink resources other than the sidelink resources used for reception.

Wherein, the initial inability of the terminal device to transmit sidelink data on the sidelink carrier may include the transition of the terminal device from being able to transmit sidelink data on the sidelink carrier to the terminal device being unable to transmit sidelink data on the sidelink carrier link data.

Exemplarily, when a side link carrier of the MAC entity of the terminal device is deactivated, the side link carrier has no side link resources that can be used to transmit side link data, and the terminal device triggers PHR.

Condition 5: The terminal device starts to have side link resources for transmitting data.

It should be noted that the terminal equipment starts to have side link resources for transmitting data, which may be that the MAC entity of the terminal equipment starts to have side link resources for transmitting data; it may be that a MAC entity of the terminal equipment starts to have side link resources for transmitting data. ; It may be that a link of the terminal device begins to have side link resources for transmitting data; it may be that a carrier of the terminal device begins to have side link resources for transmitting data.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the terminal equipment starting to have side link resources for transmitting data includes that the terminal equipment starting to have side link resources for transmitting data; or, the terminal equipment starting to have side link resources for transmitting new data.

The starting of the terminal device having side link resources for transmitting data may include switching the terminal device from having no side link resources for transmitting data to having side link resources for transmitting data.

The starting of the terminal device with side link resources for transmitting new data may include switching the terminal device from having no side link resources for transmitting new data to having side link resources for transmitting new data.

Optionally, the side link resource for transmitting data may be a side link resource for transmitting data, and the side link resource for transmitting new data may be a side link resource for transmitting new data.

Optionally, the side link resource used for transmitting data may be the side link resource used for transmitting unicast data, the side link resource used for transmitting multicast data, or the side link resource used for transmitting broadcast data. edge link resources.

Exemplarily, the terminal device triggers the PHR when the terminal device starts to have side link resources that are ready to transmit data.

Exemplarily, the terminal device triggers the PHR when the terminal device starts to have sidelink resources ready for transmitting new data.

Condition 6: The terminal device starts a side link transmission.

It should be noted that when the terminal equipment starts to transmit with side links, it can be that the MAC entity of the terminal equipment starts to transmit with side links; it can be that a MAC entity of the terminal equipment starts to transmit with side links; it can be a link of the terminal equipment Starts a sidelink transmission; a carrier that can be a terminal device starts a sidelink transmission.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the starting of the terminal equipment with side link transmission may include that the terminal equipment starts with side link transmission for transmitting data; or, the terminal equipment starts with side link transmission for transmitting new data.

Wherein, starting a transmission with a side link for transmitting data by the terminal device may include switching the terminal device from a transmission without a side link for transmitting data to a transmission with a side link for transmitting data.

Wherein, starting a transmission with a side link for transmitting new data by the terminal device may include switching the terminal device from a transmission without a side link for transmitting new data to a transmission with a side link for transmitting new data.

Optionally, the side link transmission for transmitting data may be sending data on the side link resource, and the side link transmission for transmitting new data may be sending new data on the side link resource.

Optionally, the side link transmission used to transmit data may be the side link transmission used to transmit unicast data, the side link transmission used to transmit multicast data, or the side link transmission used to transmit broadcast data. side link transmission.

Exemplarily, when the terminal device starts to transmit data on the side link transmission resource, the terminal device triggers the PHR.

Exemplarily, when the terminal device starts to transmit new data on the side link transmission resource, the terminal device triggers the PHR.

Condition 7: The first timer expires, the terminal device has side link resources for transmitting data, and for at least one active carrier of the terminal device, the change value of the side link path loss is greater than or equal to the first parameter value.

The terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Wherein, the side link resource for transmitting data on the terminal device may be the side link resource for transmitting new data on the terminal device; or the side link resource for transmitting data on the MAC entity; or the side link resource for transmitting new data on the MAC entity edge link resources.

Wherein, the first timer may be a prohibition timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting, and the first timer may also be independent of that used for uplink PHR reporting The timer of the prohibition timer reported by the PHR, for example, the phr-ProhibitTimer reported by the PHR of the side link.

Optionally, the first timer can be started or restarted when the terminal device sends the PHR; or, it can be started or restarted after the terminal device sends the PHR; or, it can be started or restarted when the terminal device packages the PHR or calculates the PH; The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout period of the first timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the first timer timeout may include that the first timer has just timed out or the first timer has timed out.

Optionally, the unit of the first parameter value may be dB, or may be other units, or no unit.

Optionally, the first timer is a timer under the MAC entity, or a timer under the terminal device.

Exemplarily, the network device configures the timeout period of the first timer to be 20 subframes. After the terminal device sends PHR1 to the network device, the first timer is started or restarted. If the 20th subframe after the first timer is started or restarted, frame, the MAC entity has side link resources for transmitting data, and for at least one active carrier of the MAC entity, when the change value of the side link path loss is greater than or equal to the first parameter value, PHR2 is triggered.

Exemplarily, the network device configures the timeout time of the first timer to be 20 subframes. After the terminal device sends PHR1 to the network device, the first timer is started or restarted. If the 22nd subframe after the first timer is started or restarted, frame, the MAC entity has side link resources for transmitting new data, and for at least one activated carrier of the MAC entity, when the change value of the side link path loss is greater than or equal to the first parameter value, PHR2 is triggered.

Optionally, the side link path loss change value of a carrier is the side link path loss measured at the current side link path loss reference and the side link path measured at the side link path loss reference during the last PHR transmission. The change value between losses; alternatively, the side link path loss change value for a carrier is the side link path loss measured at the current side link path loss reference and the side link path loss at the time of the last PH calculation or PHR packing The change value between the side link path loss measured at the reference; alternatively, the side link path loss change value for a carrier is the difference between the side link path loss measured at the current side link path loss reference and the last PHR trigger. Variation between side link path losses measured at the side link path loss reference.

The change value of the side link path loss may be a positive value, a negative value, 0 or an absolute value.

If the change value of the path loss of the side link is positive, it can indicate that the path loss of the side link becomes larger; if the change value of the path loss of the side link is negative, it can indicate that the path loss of the side link becomes smaller; If the change value of the path loss is a positive value, it can indicate that the path loss of the side link becomes smaller; if the change value of the path loss of the side link is a negative value, it can indicate that the path loss of the side link becomes larger.

If the change value of the edge link path loss is 0, it can indicate that the edge link path loss does not change.

If the change value of the side link path loss is an absolute value, it can represent the value of the side link path loss change, but cannot indicate whether the side link path loss increases or decreases. Optionally, the current side link path loss reference and the side link path loss reference during the last PHR transmission, or the side link path loss reference during the last PH calculation or PHR packaging, or the side link path loss reference during the last PHR triggering Can be the same or different.

Optionally, the current side link path loss reference and the side link path loss reference during the last PHR transmission, or the side link path loss reference during the last PH calculation or PHR packaging, or the side link path loss reference during the last PHR triggering Can belong to the same side link, or belong to the same MAC entity.

Optionally, the first parameter value may be the same as the parameter value (for example: phr-Tx-PowerFactorChange dB) used in the uplink PHR trigger condition, or may be different.

Optionally, as shown in FIG. 4 , the terminal device may obtain the side link path loss through operations 401-402.

In operation 401, a terminal device receives a first reference signal sent by another terminal device.

In operation 402, the terminal device obtains the side link path loss according to the first reference signal.

Optionally, the terminal device may obtain the side link path loss according to the power of the first reference signal and the received power of the first reference signal measured by the terminal device.

Exemplarily, the terminal device may use the difference between the power of the first reference signal and the received power of the first reference signal measured by the terminal device as the side link path loss.

Optionally, the terminal device may obtain the power of the first reference signal by receiving the power of the first reference signal broadcast by the network device or other terminal devices; or, the terminal device may obtain the power of the first reference signal by receiving the dedicated signaling sent by the network device or other terminal devices. The power of the first reference signal; or, the terminal device stores the power of the first reference signal.

Optionally, storing the power of the first reference signal in the terminal device may include: the device manufacturer stores the power of the first reference signal specified by the protocol or standard in the terminal device before the terminal device leaves the factory, or the network device stores the power of the first reference signal in the terminal device. The power of the first reference signal is pre-configured into the terminal device when the terminal device accesses the network.

Optionally, as shown in FIG. 5 , the terminal device may obtain the side link path loss through operations 501-503.

In operation 501, a terminal device sends a second reference signal to other terminal devices.

In operation 502, other terminal equipment obtains the side link path loss according to the second reference signal.

Optionally, other terminal devices may obtain the side link path loss according to the power of the second reference signal and the received power of the second reference signal measured by other terminal devices.

Exemplarily, other terminal devices may use the difference between the power of the second reference signal and the received power of the second reference signal measured by other terminal devices as the side link path loss.

Optionally, other terminal devices may obtain the power of the second reference signal by receiving the power of the second reference signal broadcast by the network device or the terminal device; or, other terminal devices may obtain the power of the second reference signal by receiving the dedicated signaling sent by the network device or the terminal device. The power of the second reference signal; or, other terminal devices store the power of the second reference signal.

Optionally, storing the power of the second reference signal in the other terminal device may include: the device manufacturer stores the power of the second reference signal specified by the protocol or standard in the other terminal device before the other terminal device leaves the factory, or , the network device pre-configures the power of the second reference signal into the other terminal device when the other terminal device accesses the network.

In operation 503, the terminal device receives second reference signal response information sent by other terminal devices.

Optionally, the second reference signal response information includes side link path losses obtained by other terminal devices.

Optionally, as shown in FIG. 6 , the terminal device may obtain the side link path loss through operations 601-603.

In operation 601, a terminal device sends a third reference signal to other terminal devices.

In operation 602, the terminal device receives third reference signal response information sent by other terminal devices.

Optionally, other terminal devices may measure the received power of the third reference signal when receiving the third reference signal sent by the terminal device, and send third reference signal response information to the terminal device, where the third reference signal response information includes other terminals. The received power of the third reference signal measured by the device.

In operation 603, the terminal device acquires the side link path loss according to the third reference signal response information.

Optionally, the terminal device may obtain the side link path loss according to the power of the third reference signal and the received power of the third reference signal measured by other terminal devices.

Exemplarily, the terminal device may use the difference between the power of the third reference signal and the received power of the third reference signal measured by other terminal devices as the side link path loss.

Optionally, the terminal device may obtain the power of the third reference signal by receiving the power of the third reference signal broadcast by the network device or other terminal devices; or, the terminal device may obtain the power of the third reference signal by receiving the dedicated signaling sent by the network device or other terminal devices. The power of the third reference signal; or, the terminal device may store the power of the third reference signal.

Optionally, storing the power of the third reference signal in the terminal device may include: the device manufacturer stores the power of the third reference signal specified by the protocol or standard in the terminal device before the terminal device leaves the factory, or the network device stores the power of the third reference signal in the terminal device. The power of the third reference signal is pre-configured into the terminal device when the terminal device accesses the network.

Exemplarily, when PHR1 is triggered, the terminal device sends a second reference signal to other terminal devices, other terminal devices obtain the path loss of the first side link according to the second reference signal, and the terminal device receives the first edge sent by other terminal devices. The link path loss is stored and stored; the terminal device receives the first reference signal sent by other terminal devices, and obtains the second side link path loss according to the first reference signal. The terminal device can compare the second side link path loss with the first side link path loss The absolute value of the difference between the link path loss or the difference between the second side link path loss and the first side link path loss is used as the change value of the side link path loss. If the first timer expires, when there is a new transmission on the MAC entity. PHR2 is triggered when the side link resources of the data are included, and the side link includes a carrier whose side link path loss variation value is greater than or equal to the first parameter value.

Condition 8: The terminal device performs multicast communication with other terminal devices, and the first condition is satisfied.

The multicast communication may be a group of multicast communications where the terminal device is located, a multi-group multicast communication where the terminal device is located, or all multicast communications where the terminal device is located.

Optionally, the terminal device performs multicast communication with other terminal devices, and if the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer times out and the first condition is satisfied, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has side link resources for data transmission, and the first condition is satisfied, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has side link resources for transmitting new data, and the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has uplink resources for data transmission, and the first condition is satisfied, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has uplink resources for transmitting new data, and the first condition is satisfied, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer expires, the terminal device has side link resources for transmitting data, and the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer expires, the terminal device has side link resources for transmitting new data, and the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer expires, the terminal device has uplink resources for transmitting data, and the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer expires, the terminal device has uplink resources for transmitting new data, and the first condition is satisfied, the terminal device determines that the PHR is triggered.

The second timer may be a prohibit timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting. The second timer may also be a timer independent of the disable timer for uplink PHR reporting.

Optionally, the second timer may be started when the terminal device sends the PHR; or, it is started after the terminal device sends the PHR; or, it is started or restarted when the terminal device packages the PHR or calculates the PH; or, when the terminal device packages the PHR Or start or restart after calculating PH.

Optionally, the timeout period of the second timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the expiration of the second timer may include that the second timer has just expired or the second timer has expired.

The side link resource for transmitting data on the terminal device may be a side link resource for transmitting data on the MAC entity of the terminal device.

Wherein, the side link resource for transmitting new data on the terminal device may be a side link resource for transmitting new data on the MAC entity of the terminal device.

Wherein, the uplink resource for transmitting new data on the terminal device may be the uplink resource for transmitting data on the MAC entity of the terminal device.

The presence of uplink resources for transmitting new data on the terminal device may be that there are uplink resources for transmitting new data on the MAC entity of the terminal device.

Optionally, the second timer is a timer under the MAC entity; or, a timer under the terminal device.

Optionally, the MAC entity includes side links that satisfy the first condition.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Wherein, the first condition can include any one of the following conditions a-n:

It should be noted that, for the M edge links that the terminal device performs multicast communication, the terminal device can obtain the edge link path loss change value of each edge link, and the edge link path loss change of a total of M edge links. value, where M is a positive integer.

Optionally, the terminal device obtains the side link path loss variation value of each side link, including: for each side link, determining the maximum value among the side link path loss variation values of the measured carriers, and determining the maximum value. The value is the side link path loss variation value of the side link; or, for each side link, determine the minimum value of the side link path loss variation values of the measured carrier, and determine the minimum value as the edge link edge The link path loss variation value; or, for each side link, determine the average value of the side link path loss variation values of the measured carriers, and determine the average value as the side link path loss variation value of the side link.

Optionally, the side link path loss change value of one carrier includes: the change between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference during the last PHR transmission value; or, the change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference during the last power headroom PH calculation or PHR packing; or, the current side The change between the path loss measured at the link path loss reference and the path loss measured at the side link path loss reference at the last PHR trigger.

Optionally, the current side link path loss reference and the side link path loss reference during the last PHR transmission, or the side link path loss reference during the last PH calculation or PHR packaging, or the side link path loss reference during the last PHR triggering Can be the same or different.

Optionally, the current side link path loss reference and the side link path loss reference during the last PHR transmission, or the side link path loss reference during the last PH calculation or PHR packaging, or the side link path loss reference during the last PHR triggering Can belong to the same side link, or belong to the same MAC entity.

Condition a: The number of edge link path loss variation values of the M edge links greater than or equal to the fourth parameter value is greater than or equal to N, where N is a non-negative number or a non-negative integer or a positive integer or a positive number.

The change value of the side link path loss of the side link may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the change value of the side link path loss of the side link is a positive value, it can indicate that the side link path loss of the side link becomes larger; if the change value of the side link path loss of the side link is a negative value, It can indicate that the path loss of the side link of the side link becomes smaller; or, if the change value of the path loss of the side link of the side link is a positive value, it can indicate that the path loss of the side link of the side link becomes smaller; The change value of the side link path loss of is a negative value, which can indicate that the side link path loss of the side link becomes larger.

Optionally, if the change value of the side link path loss of the side link is 0, it may indicate that the side link path loss of the side link does not change.

Optionally, if the change value of the side link path loss of the side link is an absolute value, it may indicate the change value of the side link path loss of the side link, but cannot indicate whether the side link path loss increases or decreases.

Optionally, the unit of the fourth parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the four side links is shown in Table 1. If the fourth parameter value is 10dB, N is When the value is 3, the terminal device does not trigger the PHR; if the fourth parameter value is 10dB and N is 2, the terminal device triggers the PHR.

Table 1

Condition b: The ratio of the number of edge link path loss variation values of the M edge links greater than or equal to the fifth parameter value to M is greater than or equal to R, where R is greater than or equal to 0 and less than or equal to 1.

Optionally, the unit of the fifth parameter value may be dB, or may be other units, or no unit.

The change value of the side link path loss of the side link may be a positive value, a negative value, 0 or an absolute value.

For the introduction of the change value of the side link path loss of the side link as a positive value, a negative value, 0 or an absolute value, you can refer to the corresponding introduction in Condition a, which will not be repeated here.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the four side links is shown in Table 2. If the value of the fifth parameter is 12dB, R is When the value is 0.6, the terminal device does not trigger the PHR; if the value of the fifth parameter is 12dB and R is 0.5, the terminal device triggers the PHR.

Table 2

Edge link sequence number Side link path loss variation value of side link (dB) 1 10 2 12 3 15 4 9

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the four side links is shown in Table 3. If the value of the fifth parameter is 12dB, R is When the value is 60%, the terminal device does not trigger the PHR; if the value of the fifth parameter is 12dB and R is 50%, the terminal device triggers the PHR.

table 3

Edge link sequence number Side link path loss variation value of side link (dB) 1 10 2 12 3 15 4 9

Condition c: The average value of the edge link path loss variation values of the M edge links is greater than or equal to the sixth parameter value.

The change value of the side link path loss of the side link may be a positive value, a negative value, 0 or an absolute value.

For the introduction of the change value of the side link path loss of the side link as a positive value, a negative value, 0 or an absolute value, you can refer to the corresponding introduction in Condition a, which will not be repeated here.

Optionally, the unit of the sixth parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links The values are shown in Table 4. If the value of the sixth parameter is 12dB, the terminal device does not trigger the PHR; if the value of the sixth parameter is 10dB, the terminal device triggers the PHR.

Table 4

Edge link sequence number Side link path loss variation value of side link (dB) 1 11 2 12 3 11 4 9 average value 10.75

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links The values are shown in Table 5. If the value of the sixth parameter is 6dB, the terminal device does not trigger the PHR; if the value of the sixth parameter is 4dB, the terminal device triggers the PHR.

table 5

Edge link sequence number Side link path loss variation value of side link (dB) 1 11 2 -4 3 -6 4 15 average value 4

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the 4 side links and the change value of the side link path loss of the 4 side links are absolute The value before the value and the average value of the side link path loss variation values of the four side links are shown in Table 6, where the side link path loss variation values of the side links are absolute values. If the value of the sixth parameter is 10dB, the terminal device does not trigger the PHR; if the value of the sixth parameter is 8dB, the terminal device triggers the PHR.

Table 6

Condition d: The maximum value among the edge link path loss variation values of the M edge links is greater than or equal to the seventh parameter value.

The change value of the side link path loss of the side link may be a positive value, a negative value, 0 or an absolute value.

For the introduction of the change value of the side link path loss of the side link as a positive value, a negative value, 0 or an absolute value, you can refer to the corresponding introduction in Condition a, which will not be repeated here.

Optionally, the unit of the seventh parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, the MAC entity has side link resources for transmitting new data, and the change value of the side link path loss of the four side links is shown in Table 7. The side link paths of the four side links are shown in Table 7. The maximum value of the loss change value is 16. If the value of the seventh parameter is 18dB, the terminal device does not trigger the PHR; if the value of the seventh parameter is 12dB, the terminal device triggers the PHR.

Table 7

Edge link sequence number Side link path loss variation value of side link (dB) 1 11 2 5 3 16 4 15

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, the MAC entity has side link resources for transmitting new data, and the change value of the side link path loss of the four side links is shown in Table 8. The side link paths of the four side links are shown in Table 8. The maximum value of the loss variation value is 11. If the value of the seventh parameter is 18dB, the terminal device does not trigger the PHR; if the value of the seventh parameter is 10dB, the terminal device triggers the PHR.

Table 8

Edge link sequence number Side link path loss variation value of side link (dB) 1 11 2 -5 3 -12 4 9

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the 4 side links takes the value before the absolute value and the side link of the 4 side links. The change value of the path loss is shown in Table 9, wherein the change value of the path loss of the side link of the side link is an absolute value. The maximum value of the side link path loss variation values of the four side links is 12. If the value of the seventh parameter is 18dB, the terminal device does not trigger PHR; if the value of the seventh parameter is 10dB, the terminal device triggers PHR.

Table 9

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the 4 side links takes the value before the absolute value and the side link of the 4 side links. The path loss variation values are shown in Table 10, where the side link path loss variation values of the side links are absolute values. The maximum value of the side link path loss variation values of the four side links is 18. If the value of the seventh parameter is 20dB, the terminal device does not trigger PHR; if the value of the seventh parameter is 10dB, the terminal device triggers PHR.

Table 10

Condition e: The change value of the maximum value in the side link path losses of the M edge links is greater than or equal to the eighth parameter value, wherein the change value of the maximum value is used to indicate the edges of the M edge links obtained twice Variation between maximum values in link path loss.

The change value of the maximum value in the side link path loss of the side link may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the change value of the maximum value of the path losses of the side links of the M side links is a positive value, it can indicate that the maximum value of the path losses of the side links of the M side links becomes larger; The change value of the maximum value of the edge link path loss of the edge link is a negative value, which can indicate that the maximum value of the edge link path loss of the M edge links becomes smaller; The change value of the maximum value of the link path loss is a positive value, which can indicate that the maximum value of the side link path losses of the M edge links becomes smaller; if the maximum value of the side link path losses of the M edge links is the largest The change value of the value is a negative value, which can indicate that the maximum value of the edge link path losses of the M edge links becomes larger.

Optionally, the change value of the maximum value of the path losses of the side links of the M if edge links is 0, which may indicate that the maximum value of the path losses of the side links of the M edge links does not change.

Optionally, if the change value of the maximum value of the path losses of the side links of the M side links is an absolute value, it can represent the value of the maximum value change of the path losses of the side links of the M side links, not It can indicate whether the maximum value of the side link path losses of the M side links becomes larger or smaller.

Optionally, the maximum value of the side link path losses of the M side links obtained twice includes the currently measured maximum value of the side link path losses of the M side links and the maximum value measured during the last PHR transmission. The maximum value among the side link path losses of the M side links; or, the maximum value among the side link path losses of the M side links currently measured and the M edges measured during the last PH calculation or PHR packing The maximum value of the side-link path losses of the link; the maximum value of the currently measured side-link path losses of the M side-links and the side-link path losses of the M side-links measured at the last PHR trigger the maximum value in .

Optionally, the maximum value among the side link path losses of the M side links measured during the last PHR transmission and the side link where the maximum value of the side link path losses of the currently measured M side links is located. The side link where it is located, or the side link where the maximum value of the side link path losses of the M side links measured during the last PH calculation or PHR packaging is located, or the M side links measured when the last PHR was triggered The side link where the maximum value of the path loss of the side link is located can be the same or different.

Optionally, the unit of the eighth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the maximum value of the side link path losses of the multiple side links as the side link. The maximum value of the path loss of the side link of the road.

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 11 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The edge link of edge link 1 has the largest path loss, which is 30.

Table 11

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 12 shows the side link path losses of the 4 side links measured by the current terminal equipment. The edge link of edge link 2 has the largest path loss, which is 42.

Table 12

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25

The change value of the maximum value among the side link path losses of the four side links is 42-30=12 or 30-42=-12 or |42-30|=12.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the maximum value of the side link path losses of the four side links is 12, if the value of the eighth parameter is 15, The terminal device does not trigger the PHR. If the value of the eighth parameter is 10, the terminal device triggers the PHR.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the maximum value of the side link path losses of the four side links is -12, if the value of the eighth parameter is 15 , the terminal device does not trigger the PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 13 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The edge link of edge link 1 has the largest path loss, which is 30.

Table 13

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 14 shows the side link path losses of the 4 side links measured by the current terminal equipment. The edge link of edge link 2 has the largest path loss, which is 25.

Table 14

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 25 3 10 4 18

The change value of the maximum value among the side link path losses of the four side links is 30-25=5 or 25-30=-5 or |30-25|=5.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the maximum value of the side link path losses of the four side links is 5, if the value of the eighth parameter is 15, The terminal device does not trigger the PHR. If the value of the eighth parameter is 5, the terminal device triggers the PHR. When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the maximum value of the side link path losses of the four side links is -5, if the value of the eighth parameter is 15 , the terminal device does not trigger the PHR.

Condition f: The number of absolute values of edge link path loss variation values of the M edge links greater than or equal to the ninth parameter value is greater than or equal to P, where P is a non-negative number or a non-negative integer or a positive integer or a positive number.

The change value of the side link path loss of the side link may be a positive value, a negative value or 0.

Optionally, if the change value of the side link path loss of the side link is a positive value, it can indicate that the side link path loss of the side link becomes larger; if the change value of the side link path loss of the side link is a negative value, It can indicate that the path loss of the side link of the side link becomes smaller; or, if the change value of the path loss of the side link of the side link is a positive value, it can indicate that the path loss of the side link of the side link becomes smaller; The side link path loss change value of is negative, which can indicate that the side link path loss of the side link becomes larger.

Optionally, if the change value of the side link path loss of the side link is 0, it may indicate that the side link path loss of the side link does not change.

Optionally, the unit of the ninth parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the side link path loss change value of the 4 side links and the side link path loss change value of the 4 side links is absolute The values are shown in Table 15. If the ninth parameter value is 10dB and P is 3, the terminal device does not trigger PHR; if the ninth parameter value is 10dB and P is 2, the terminal device triggers PHR.

Table 15

Condition g: The ratio of the absolute value of the edge link path loss variation values of the M edge links greater than or equal to the tenth parameter value to M is greater than or equal to S, where S is greater than or equal to 0 and less than or equal to 1.

The change value of the side link path loss of the side link may be a positive value, a negative value or 0.

For the introduction of the side link path loss change value of the side link being a positive value, a negative value or 0, you can refer to the corresponding introduction in condition f, and details are not repeated here.

Optionally, the unit of the tenth parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the side link path loss change value of the 4 side links and the side link path loss change value of the 4 side links is absolute The values are shown in Table 16. If the tenth parameter value is 12dB and S is 0.6, the terminal device does not trigger PHR; if the tenth parameter value is 12dB and S is 0.5, the terminal device triggers PHR.

Table 16

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the side link path loss change value of the 4 side links and the side link path loss change value of the 4 side links is absolute The values are shown in Table 17. If the tenth parameter value is 12dB and S is 60%, the terminal device does not trigger PHR; if the tenth parameter value is 12dB and S is 50%, the terminal device triggers PHR.

Table 17

Condition h: The average value of the absolute values of the edge link path loss variation values of the M edge links is greater than or equal to the eleventh parameter value.

The change value of the side link path loss of the side link may be a positive value, a negative value or 0.

For the introduction of the side link path loss change value of the side link being a positive value, a negative value or 0, you can refer to the corresponding introduction in condition f, and details are not repeated here.

Optionally, the unit of the eleventh parameter value may be dB, or may be other, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the 4 side links and the absolute value of the change value of the side link path loss of the 4 side links Table 18 shows the average value of the absolute value of the side link path loss variation values of the four side links. If the value of the eleventh parameter is 12dB, the terminal device does not trigger PHR; if the value of the eleventh parameter is 10dB, the terminal device will not trigger the PHR. The device triggers the PHR.

Table 18

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the side link path loss of the 4 side links and the absolute value of the change value of the side link path loss of the 4 side links Table 19 shows the average value of the absolute value of the side link path loss variation values of the four side links. If the value of the eleventh parameter is 10dB, the terminal device does not trigger PHR; if the value of the eleventh parameter is 8dB, the terminal The device triggers the PHR.

Table 19

Condition i: The maximum value among the absolute values of the side link path loss variation values of the M side links is greater than or equal to the twelfth parameter value.

The change value of the side link path loss of the side link may be a positive value, a negative value or 0.

For the introduction of the side link path loss change value of the side link being a positive value, a negative value or 0, you can refer to the corresponding introduction in condition f, and details are not repeated here.

Optionally, the unit of the twelfth parameter value may be dB, or may be other units, or no unit.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the side link path loss change value of the 4 side links and the side link path loss change value of the 4 side links is absolute The values are shown in Table 20, where the side link path loss change value of the side link is a negative value. The maximum value of the side link path loss variation values of the four side links is 12. If the twelfth parameter value is 18dB, the terminal device does not trigger PHR; if the twelfth parameter value is 10dB, the terminal device triggers PHR.

Table 20

Condition j: The absolute value of the change value of the maximum value among the edge link path losses of the M edge links is greater than or equal to the thirteenth parameter value, wherein the change value of the maximum value is used to indicate the M edges obtained twice The change between the maximum values in the edge link path loss of the link.

The change value of the maximum value in the side link path loss of the side link may be a positive value, a negative value or 0.

Optionally, if the change value of the maximum value of the path losses of the side links of the M side links is a positive value, it can indicate that the maximum value of the path losses of the side links of the M side links becomes larger; The change value of the maximum value of the edge link path loss of the edge link is a negative value, which can indicate that the maximum value of the edge link path loss of the M edge links becomes smaller; The change value of the maximum value of the link path loss is a positive value, which can indicate that the maximum value of the side link path losses of the M edge links becomes smaller; if the maximum value of the side link path losses of the M edge links is the largest The change value of the value is a negative value, which can indicate that the maximum value of the edge link path losses of the M edge links becomes larger.

Optionally, if the change value of the maximum value of the path losses of the side links of the M side links is 0, it may indicate that the maximum value of the path losses of the side links of the M side links does not change.

Optionally, the maximum value of the side link path losses of the M side links obtained twice includes the currently measured maximum value of the side link path losses of the M side links and the maximum value measured during the last PHR transmission. The maximum value among the side link path losses of the M side links; or, the maximum value among the side link path losses of the M side links currently measured and the M edges measured during the last PH calculation or PHR packing The maximum value of the side-link path losses of the link; the maximum value of the currently measured side-link path losses of the M side-links and the side-link path losses of the M side-links measured at the last PHR trigger the maximum value in .

Optionally, the maximum value among the side link path losses of the M side links measured during the last PHR transmission and the side link where the maximum value of the side link path losses of the currently measured M side links is located. The side link where it is located, or the side link where the maximum value of the side link path losses of the M side links measured during the last PH calculation or PHR packaging is located, or the M side links measured when the last PHR was triggered The side link where the maximum value of the path loss of the side link is located can be the same or different.

Optionally, the unit of the thirteenth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the maximum value of the side link path losses of the multiple side links as the side link. The maximum value of the path loss of the side link of the road.

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 21 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The edge link of edge link 1 has the largest path loss, which is 30.

Table 21

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 22 shows the side link path losses of the 4 side links measured by the current terminal equipment. The edge link of edge link 2 has the largest path loss, which is 42.

Table 22

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25

The change value of the maximum value of the side link path losses of the four side links is 30-42=-12 or 42-30=12, and the change value of the maximum value of the side link path losses of the four side links The absolute value of is 12.

If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the change value of the maximum value of the side link path losses of the four side links is 12. If the thirteenth parameter If the value is 15, the terminal device does not trigger the PHR. If the thirteenth parameter value is 10, the terminal device triggers the PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 23 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The edge link of edge link 1 has the largest path loss, which is 30.

Table 23

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 24 shows the side link path losses of the 4 side links measured by the current terminal equipment. The edge link of edge link 2 has the largest path loss, which is 25.

Table 24

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 25 3 10 4 18

The change value of the maximum value of the side link path losses of the 4 side links is 25-30=-5 or 30-25=-5, and the change value of the maximum value of the side link path losses of the 4 side links The absolute value of the value is 5.

If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the change value of the maximum value of the side link path losses of the four side links is 5. If the thirteenth parameter If the value is 15, the terminal device does not trigger PHR, and if the value of the thirteenth parameter is 5, the terminal device triggers PHR.

Condition k: The variation value of the minimum value of the edge link path losses of the M edge links is greater than or equal to the fourteenth parameter value, wherein the variation value of the minimum value is used to indicate the twice obtained M edge links. The change between the minimum values in the path loss of the edge link.

Wherein, the change value of the minimum value among the side link path losses of the M side links may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the change value of the minimum value of the path losses of the side links of the M side links is a positive value, it can indicate that the minimum value of the path losses of the side links of the M side links becomes larger; The change value of the minimum value of the path loss of the edge link of the edge link is a negative value, which can indicate that the minimum value of the path loss of the edge link of the M edge links becomes smaller; The change value of the minimum value of the link path loss is a positive value, which can indicate that the minimum value of the side link path losses of the M edge links becomes smaller; if the minimum value of the side link path losses of the M edge links is the smallest The change value of the value is a negative value, which can indicate that the minimum value of the edge link path losses of the M edge links becomes larger.

Optionally, if the change value of the minimum value of the path losses of the side links of the M side links is 0, it may indicate that the minimum value of the path losses of the side links of the M side links does not change.

Optionally, if the change value of the minimum value of the path losses of the side links of the M edge links is an absolute value, it may represent the change value of the minimum value of the path losses of the side links of the M side links, instead of It can indicate whether the minimum value among the side link path losses of the M side links becomes larger or smaller.

Optionally, the minimum value of the side link path losses of the M side links obtained twice includes the minimum value of the side link path losses of the M side links currently measured and the value measured during the last PHR transmission. The minimum value among the side link path losses of the M side links; or, the minimum value among the side link path losses of the M side links currently measured and the M edges measured during the last PH calculation or PHR packing The minimum value among the side link path losses of the link; the minimum value among the currently measured side link path losses of the M side links and the side link path losses of the M side links measured at the last PHR trigger the minimum value in .

Optionally, the side link where the minimum value of the side link path losses of the currently measured M side links is located and the minimum value among the side link path losses of the M side links measured during the last PHR transmission The side link where it is located, or the side link where the minimum value of the side link path losses of the M side links measured during the last PH calculation or PHR packing is located, or the M side links measured when the last PHR was triggered The side link where the minimum value of the path loss of the side link is located can be the same or different.

Optionally, the unit of the fourteenth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the minimum value of the side link path losses of the multiple side links as the side link. The minimum value of the path loss of the side link of the road.

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 25 shows the side link path losses for the 4 side links measured by the terminal device at the last PHR transmission. The side link path loss of side link 4 is the smallest, which is 16.

Table 25

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 26 shows the side link path losses of the 4 side links measured by the current terminal device. The side link path loss of side link 3 is the smallest, which is 10.

Table 26

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25

The change value of the minimum value among the side link path losses of the 4 side links is 16-10=6 or 10-16=-6 or |16-10|=6.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the minimum value of the side link path losses of the four side links is 6, if the value of the fourteenth parameter is 15 , the terminal device does not trigger the PHR, if the value of the fourteenth parameter is 5, the terminal device triggers the PHR.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the minimum value of the side link path losses of the four side links is -6, if the value of the fourteenth parameter is 15. The terminal device does not trigger the PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 27 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The side link path loss of side link 4 is the smallest, which is 10.

Table 27

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 10

Table 28 shows the side link path losses of the 4 side links measured by the current terminal device. The side link path loss of side link 2 is the smallest, which is 15.

Table 28

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 15 3 20 4 18

The change value of the minimum value among the side link path losses of the 4 side links is 15-10=5 or 10-15=-5 or |15-10|=5.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the minimum value of the side link path losses of the four side links is 5, if the value of the fourteenth parameter is 15 , the terminal device does not trigger the PHR, if the value of the fourteenth parameter is 5, the terminal device triggers the PHR.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the change value of the minimum value of the side link path losses of the four side links is -5, if the value of the fourteenth parameter is 15. The terminal device does not trigger the PHR.

Condition 1: The absolute value of the variation value of the minimum value among the edge link path losses of the M edge links is greater than or equal to the fifteenth parameter value, wherein the variation value of the maximum value is used to indicate the M edges obtained twice The change between the minimum value in the edge link path loss of the link.

Wherein, the change value of the minimum value among the edge link path losses of the M edge links may be a positive value, a negative value or 0.

For an introduction about whether the change value of the minimum value of the side link path losses of the M side links is a positive value, a negative value or 0, reference may be made to the corresponding introduction in condition k, and details are not repeated here.

Optionally, the minimum value of the side link path losses of the M side links obtained twice includes the minimum value of the side link path losses of the M side links currently measured and the value measured during the last PHR transmission. The minimum value among the side link path losses of the M side links; or, the minimum value among the side link path losses of the M side links currently measured and the M edges measured during the last PH calculation or PHR packing The minimum value among the side link path losses of the link; the minimum value among the currently measured side link path losses of the M side links and the side link path losses of the M side links measured at the last PHR trigger the minimum value in .

Optionally, the side link where the minimum value of the side link path losses of the currently measured M side links is located and the minimum value among the side link path losses of the M side links measured during the last PHR transmission The side link where it is located, or the side link where the minimum value of the side link path losses of the M side links measured during the last PH calculation or PHR packing is located, or the M side links measured when the last PHR was triggered The side link where the minimum value of the path loss of the side link is located can be the same or different.

Optionally, the unit of the fifteenth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the minimum value of the side link path losses of the multiple side links as the edge. The minimum value of the edge link path loss of the link.

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 29 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The side link path loss of side link 4 is the smallest, which is 16.

Table 29

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16

Table 30 shows the side link path losses of the 4 side links measured by the current terminal device. The side link path loss of side link 3 is the smallest, which is 10.

Table 30

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25

The change value of the minimum value of the side link path losses of the 4 side links is 16-10=6 or 10-16=-6, and the change value of the minimum value of the side link path losses of the 4 side links The absolute value of is 6.

If the second timer expires, the MAC entity has side link resources for transmitting new data, and the absolute value of the change value of the minimum value of the side link path losses of the four side links is 6. If the fifteenth parameter If the value is 15, the terminal device does not trigger PHR, and if the value of the fifteenth parameter is 6, the terminal device triggers PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 31 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The side link path loss of side link 4 is the smallest, which is 10.

Table 31

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 10

Table 32 shows the side link path losses of the 4 side links measured by the current terminal device. The side link path loss of side link 2 is the smallest, which is 15.

Table 32

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 15 3 20 4 18

The change value of the minimum value of the side link path losses of the 4 side links is 15-10=5 or 10-15=-5, and the change value of the minimum value of the side link path losses of the 4 side links The absolute value of is 5.

If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the change value of the minimum value of the path loss of the side link of the four side links is 5. If the fifteenth parameter If the value is 15, the terminal device does not trigger the PHR. If the value of the fifteenth parameter is 5, the terminal device triggers the PHR.

Condition m: The change value of the average value of the edge link path loss of the M edge links is greater than or equal to the value of the sixteenth parameter, wherein the change value of the minimum value is used to indicate the edges of the M edge links obtained twice The variation between the mean values of the link path loss.

Wherein, the change value of the average value of the side link path losses of the M side links may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the change value of the average value of the path losses of the side links of the M side links is a positive value, it can indicate that the average value of the path losses of the side links of the M side links becomes larger; The change value of the average value of the path loss of the side links of the road is a negative value, which can indicate that the average value of the side link path loss of the M edge links becomes smaller; or, if the side link path loss of the M edge links is smaller The change value of the average value of the M edge link is a positive value, which can indicate that the average value of the edge link path loss of the M edge links becomes smaller; if the change value of the average value of the edge link path loss of the M edge links is a negative value , which can indicate that the average value of the edge link path losses of M edge links becomes larger.

Optionally, if the change value of the average value of the side link path losses of the M side links is 0, it may indicate that the average value of the side link path losses of the M side links does not change.

Optionally, if the change value of the average value of the path loss of the side links of the M edge links is an absolute value, it can represent the value of the average change of the path loss of the side links of the M edge links, but not Whether the average value of the edge link path losses of the M edge links becomes larger or smaller.

Optionally, the average value of the side link path losses of the M side links obtained twice includes the currently measured average value of the side link path losses of the M side links and the M value measured during the last PHR transmission. The average value of the side link path losses of the side links; or, the average value of the side link path losses of the currently measured M side links and the M side links measured during the last PH calculation or PHR packing The average value of the link path loss; the average value of the currently measured side link path losses of the M side links and the average value of the side link path losses of the M side links measured when the last PHR was triggered.

Optionally, the unit of the sixteenth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the average value of the side link path losses of the multiple side links as the side link. The average edge link path loss of .

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 33 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4 edge links is 22.75.

Table 33

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16 average value 22.75

Table 34 shows the side link path losses of the 4 side links measured by the current terminal device. The average value of the edge link path loss for the 4 edge links is 28.

Table 34

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25 average value 28

The variation value in the mean value of the side link path losses of the 4 side links is 22.75-28=-5.25 or 28-22.75=5.25 or |22.75-28|=5.25.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average change value of the side link path loss of the four side links is -5.25, if the value of the sixteenth parameter is 15 , the terminal device does not trigger the PHR.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average change value of the side link path loss of the four side links is 5.25, if the value of the sixteenth parameter is 15, The terminal device does not trigger the PHR. If the value of the sixteenth parameter is 5, the terminal device triggers the PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 35 shows the side link path losses of the 4 side links measured by the terminal device at the last PHR transmission. The average value of the edge link path loss for the 4 edge links is 21.25.

Table 35

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 10 average value 21.25

Table 36 shows the side link path losses of the 4 side links measured by the current terminal device. The average value of the edge link path loss for the 4 edge links is 18.25.

Table 36

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 15 3 20 4 18 average value 18.25

The change in the mean value of the side link path losses of the 4 side links is 21.25-18.25=3 or 18.25-21.25=-3 or |21.25-18.25|=3.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average change value of the side link path losses of the four side links is 3, if the value of the sixteenth parameter is 15, The terminal device does not trigger the PHR. If the value of the sixteenth parameter is 3, the terminal device triggers the PHR.

When the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the average change of the side link path losses of the four side links is -3, if the value of the sixteenth parameter is 15 , the terminal device does not trigger the PHR.

Condition n: The absolute value of the variation value of the mean value in the edge link path loss of the M edge links is greater than or equal to the seventeenth parameter value, wherein the variation value of the mean value is used to indicate the M edges obtained twice The variation between the mean values of the link's edge-link path loss.

Wherein, the change value of the average value of the edge link path losses of the M edge links may be a positive value, a negative value or 0.

For an introduction about whether the change value of the average value of the edge link path loss of the M edge links is a positive value, a negative value or 0, reference may be made to the corresponding introduction in condition m, and details are not repeated here.

Optionally, the average value of the side link path losses of the M side links obtained twice includes the currently measured average value of the side link path losses of the M side links and the M value measured during the last PHR transmission. The average value of the side link path losses of the side links; or, the average value of the side link path losses of the currently measured M side links and the M side links measured during the last PH calculation or PHR packing The average value of the link path loss; the average value of the currently measured side link path losses of the M side links and the average value of the side link path losses of the M side links measured when the last PHR was triggered.

Optionally, the unit of the seventeenth parameter value may be dB, or may be other units, or no unit.

Optionally, each time the terminal device measures the side link path loss, it may measure the side link path loss of multiple side links, and take the average value of the side link path losses of the multiple side links as the side chain. The average value of the path loss of the side link of the road.

Optionally, for each side link, the terminal device determines the maximum value of the side link path losses of the carrier measured by the terminal device, and determines that the maximum value is the side link path loss of the side link; or, for each side chain For each side link, the terminal equipment determines the minimum value of the side link path losses of the measured carriers, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal equipment determines the measured carrier The average value of the edge link path losses of , and determine the average value as the edge link path loss of the edge link.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 37 shows the side link path losses for the 4 side links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4 edge links is 22.75.

Table 37

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 16 average value 22.75

Table 38 shows the side link path losses for the 4 side links measured by the current terminal device. The average value of the edge link path loss for the 4 edge links is 28.

Table 38

Edge link sequence number The currently measured side link path loss of the side link 1 35 2 42 3 10 4 25 average value 28

The change value of the average value of the side link path loss of the 4 side links is 22.75-28=-5.25 or 28-22.75=5.25, the absolute value of the change value of the average value of the side link path loss of the 4 side links The value is 5.25.

If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the change in the average value of the side link path losses of the four side links is 5.25. If the value of the seventeenth parameter is If the value is 15, the terminal device does not trigger the PHR. If the value of the seventeenth parameter is 5, the terminal device triggers the PHR.

Exemplarily, the terminal device 105 as shown in FIG. 1 performs multicast communication with the terminal devices 106-109. The side link sequence number of the side link established by the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established by the terminal device 105 and the terminal device 107 is 2, and the side link sequence number established by the terminal device 105 and the terminal device 108 is 2. The side link sequence number of the side link is 3, and the side link sequence number of the side link established by the terminal device 105 and the terminal device 109 is 4. Table 39 shows the side link path losses for the 4 side links measured by the terminal device at the last PHR transmission. The average value of the edge link path loss for the 4 edge links is 21.25.

Table 39

Edge link sequence number Side link path loss of the side link measured at the last PHR transmission 1 30 2 25 3 20 4 10 average value 21.25

Table 40 shows the side link path losses for the 4 side links measured by the current terminal device. The average value of the edge link path loss for the 4 edge links is 18.25.

Table 40

Edge link sequence number The currently measured side link path loss of the side link 1 20 2 15 3 20 4 18 average value 18.25

The change value of the mean value in the side link path loss of the 4 side links is 21.25-18.25=3 or 18.25-21.25=-3, the change value of the mean value in the side link path loss of the 4 side links The absolute value of is 3.

If the second timer expires, there are side link resources for transmitting new data on the MAC entity, and the absolute value of the change value of the average value of the side link path losses of the four side links is 3. If the value of the seventeenth parameter is If the value is 15, the terminal device does not trigger the PHR. If the value of the seventeenth parameter is 3, the terminal device triggers the PHR. Optionally, the fourth parameter value, the fifth parameter value, the sixth parameter value, the seventh parameter value, the eighth parameter value, the ninth parameter value, the tenth parameter value, the eleventh parameter value, The twelfth parameter value, the thirteenth parameter value, the fourteenth parameter value, the fifteenth parameter value, the sixteenth parameter value and the seventeenth parameter value may be the same as the parameter values used in the uplink PHR trigger condition ( For example: phr-Tx-PowerFactorChange dB) is the same or different.

Regarding the method for the terminal device to obtain the path loss of the side link when the terminal device performs multicast communication with other terminal devices, reference may be made to the method described in Condition 7, which will not be repeated here.

Regarding the method for the terminal device to obtain the side link path loss of each side link when the terminal device performs multicast communication with other terminal devices, reference may be made to the method described in Condition 7, which will not be repeated here.

Condition 9: The resource acquisition method is converted.

It should be noted that the conversion of the resource acquisition mode may also be referred to as the conversion of the data transmission mode.

Optionally, the resource acquisition mode is converted, including the conversion of the resource acquisition mode of the side link, for example: the resource acquisition mode supporting the first mode is converted to the resource acquisition mode supporting the second mode; or, the resources supporting the first mode are converted The acquisition mode is converted into a resource acquisition mode supporting the first mode and a resource acquisition mode in the second mode; or, the resource acquisition mode supporting the first mode and the resource acquisition mode in the second mode is converted into a resource acquisition mode supporting the second mode.

Optionally, the conversion of the resource acquisition mode may further include the conversion of the resource acquisition mode of the side link and the Uu link.

Example 1, the conversion of the resource acquisition method of the side link and the Uu link may include the conversion of the resource acquisition method that supports the Uu link to the resource acquisition method that supports the side link, for example: the resource acquisition method that supports the Uu link is converted to support The resource acquisition method of the first mode; or, the resource acquisition method that supports the Uu link is converted into the resource acquisition method that supports the first mode and the resource acquisition method of the second mode.

Example 2, the conversion of the resource acquisition mode of the side link and the Uu link may include the conversion of the resource acquisition mode supporting the side link to the resource acquisition mode supporting the Uu link. For example, the resource acquisition mode supporting the first mode is converted into a resource acquisition mode supporting Uu link; or, the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode are converted into a resource acquisition mode supporting Uu link.

Example 3, the switching of resource acquisition modes of the side link and the Uu link may include switching of resource acquisition modes of other modes. For example: the resource acquisition method supporting Uu link is converted into the resource acquisition method supporting Uu link and the resource acquisition method of the first mode; or, the resource acquisition method supporting Uu link is converted into the resource acquisition method supporting Uu link, The resource acquisition method of the first mode and the resource acquisition method of the second mode; or, the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode are converted into the resource acquisition method that supports the first mode; or, the Uu chain is supported. The resource acquisition method of the road and the resource acquisition method of the first mode are converted into the resource acquisition method that supports the second mode; or, the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode are converted to the resources that support the first mode. The acquisition method and the resource acquisition method of the second mode; or, the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode are converted into the resource acquisition method that supports the Uu link; or, the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode is converted into a resource acquisition method that supports the Uu link and a resource acquisition method of the second mode; or, the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode is converted to support the Uu chain. The resource acquisition method of the road, the resource acquisition method of the first mode and the resource acquisition method of the second mode; or, the resource acquisition method that supports the first mode is converted into the resource acquisition method that supports the Uu link and the resource acquisition method of the first mode Or, the resource acquisition mode that supports the first mode is converted into the resource acquisition mode that supports the Uu link and the resource acquisition mode of the second mode; Or, the resource acquisition mode that supports the first mode is converted to the resource acquisition mode that supports the Uu link , the resource acquisition mode of the first mode and the resource acquisition mode of the second mode; or, the resource acquisition mode of the first mode and the resource acquisition mode of the second mode are converted into the resource acquisition mode of the Uu link and the resource acquisition mode of the first mode. The resource acquisition method; or, the resource acquisition method supporting the first mode and the resource acquisition method of the second mode are converted into the resource acquisition method supporting the Uu link, the resource acquisition method of the first mode and the resource acquisition method of the second mode; or , the resource acquisition method supporting Uu link, the resource acquisition method of the first mode and the resource acquisition method of the second mode are converted into the resource acquisition method supporting Uu link; or, the resource acquisition method supporting Uu link, the first mode The resource acquisition method of the first mode and the resource acquisition method of the second mode are converted into the resource acquisition method that supports the first mode; or, the resource acquisition method that supports the Uu link, the resource acquisition method of the first mode and the resource acquisition method of the second mode are converted Convert to support the resource acquisition mode of the first mode and the resource acquisition mode of the second mode; The resource acquisition method of the road and the resource acquisition method of the first mode.

Wherein, the resource acquisition method of the Uu link may include: the network device may schedule uplink transmission resources for the terminal device, and may schedule uplink transmission resources through downlink control information (DCI), that is, may include dynamic scheduling of uplink transmission resources. resources; or, the uplink transmission resources of the network device configuration grant (configured grant), that is, may also include semi-statically configured uplink resources.

Wherein, the resource acquisition method in the first mode may include: the network device configures side link transmission resources for the terminal device, and the resource acquisition method in the second mode includes: the terminal device selects side link transmission resources; or, the The resource acquisition method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition method in the first mode includes: the terminal device selects side link transmission resources.

It should be noted that the side link transmission resources between the terminal device and other terminal devices may be scheduled by the network device, that is, the network device configures the side link transmission resources for the terminal device. Exemplarily, the terminal device is within the coverage of the network device, the wireless direct communication process between the terminal device and other terminal devices is controlled by the network device, and the terminal device serving as the data sender may be the side link transmission resource configured on the network device. Send control signals and data signals to other terminal devices as data receiving ends; wherein, the network device can schedule side link transmission resources through DCI, that is, the network device can dynamically schedule the side link resources; or, the network device configuration authorization (configured grant), that is, the network device may configure the side link resources semi-statically.

It should be noted that the side link transmission resources between the terminal equipment and other terminal equipment may not be controlled by network equipment scheduling, but determined by the terminal equipment. For example, the terminal equipment perceives or competes for side link transmission resources, that is, The terminal equipment selects side link transmission resources. Exemplarily, if the terminal device is within the communication coverage of the network device, the network device may configure a side link resource pool for the terminal device through a system broadcast (system information block, SIB) message or terminal device RRC signaling, as the terminal device on the data sending end. It can autonomously obtain side link transmission resources from the side link resource pool to send control signals and data signals to other terminal devices that are data receivers; or, exemplarily, the terminal device is outside the communication coverage of the network device and sends data as data The terminal device at the end autonomously obtains side link transmission resources from the preconfigured side link resource pool to send control signals and/or data signals to other terminal devices serving as data receiving ends. Optionally, the terminal device searches for a suitable side link transmission resource in the side link resource pool by monitoring the busy and idle state of the channel by itself, and sends the control signal and/or the data signal. Optionally, the terminal device obtains appropriate side link transmission resources in the side link resource pool by competing with other terminal devices to send control signals, and/or data signals, the priority of the V2X service to be transmitted in the terminal device. The higher the level, the greater the chance of competing for suitable side link transmission resources in the side link resource pool. Optionally, the terminal device may also pre-store side link resource pool information, or the network device pre-configures the side link resource pool when the terminal device accesses the network.

Optionally, the transmission resource may be a resource for sending.

Optionally, the transmission resource of the side link can be the side link resource used for sending.

Optionally, the conversion of the resource acquisition mode may be the conversion of the resource acquisition mode of the terminal device; or the conversion of the resource acquisition mode of the MAC entity of the terminal device; or the conversion of the resource acquisition mode of a MAC entity of the terminal device; Or, the resource acquisition mode of one link of the terminal device is switched; or, the side link resource acquisition mode of one carrier or cell of the terminal device is switched.

Optionally, the conversion of the side link resource acquisition mode may be the conversion of the side link resource acquisition mode of the terminal device; or the conversion of the side link resource acquisition mode of the MAC entity of the terminal device; or, one of the terminal devices. The mode of acquiring side link resources of the MAC entity is switched; or, the mode of acquiring side link resources of one side link of the terminal device is switched; or, the mode of acquiring side link resources of one side link carrier of the terminal device is switched. .

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Exemplarily, the side link resource acquisition mode of a MAC entity of the terminal device is converted from the resource acquisition mode supporting the first mode to the resource acquisition mode supporting the second mode, and the terminal device triggers the PHR.

Exemplarily, the side link resource acquisition mode of one side link of the terminal device is converted from the resource acquisition mode supporting the first mode to the resource acquisition mode supporting the first mode and the second mode, and the terminal device triggers the PHR.

Exemplarily, the side link resource acquisition mode of one side link carrier of the terminal device is converted from the resource acquisition mode supporting the first mode and the second mode to the resource acquisition mode supporting the second mode, and the terminal device triggers the PHR.

Condition 10: The change value of the number of transmission resources is greater than or equal to the second parameter value.

Optionally, the change value of the number of transmission resources is greater than or equal to the second parameter value, and the terminal device determines that the PHR is triggered.

Optionally, the change value of the number of transmission resources is greater than or equal to the second parameter value, and the third timer expires, and the terminal device determines that the PHR is triggered.

Wherein, the change value of the number of transmission resources may include the change value of the number of transmission resources of the side link.

The third timer may be a prohibit timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting. The third timer may also be a timer independent of the disable timer for uplink PHR reporting.

Optionally, the third timer can be started or restarted when the terminal device sends the PHR; or, it can be started or restarted after the terminal device sends the PHR; or, it can be started or restarted when the terminal device packages the PHR or calculates the PH; The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout period of the third timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the expiration of the third timer may include that the third timer has just expired or the third timer has expired.

Optionally, the transmission resource may be a resource for sending.

Optionally, the transmission resource of the side link can be the side link resource used for sending.

Optionally, the change value of the number of transmission resources may be the change value of the number of transmission resources of the uplink obtained by the resource acquisition method of the Uu link; or, the transmission of the uplink obtained by the resource acquisition method of the Uu link. The total change value of the number of resources and the number of transmission resources of the side link obtained by the resource acquisition method of the second mode; or, the number of uplink transmission resources acquired by the resource acquisition method of the Uu link and the first mode The total change value of the number of transmission resources of the side link acquired by the resource acquisition method of the second mode and the resource acquisition method of the second mode.

Optionally, the change value of the number of transmission resources of the side link may be the change value of the number of transmission resources of the side link obtained by the resource acquisition method of the first mode; or, the side link obtained by the resource acquisition method of the second mode. The change value of the number of transmission resources of the link; or, the change value of the number of transmission resources of the side link obtained through the resource acquisition method of the first mode and the resource acquisition method of the second mode.

For the related introduction of the resource acquisition method of the Uu link, the resource acquisition method of the first mode, and the resource acquisition method of the second mode, please refer to the corresponding introduction in Condition 9, and will not be repeated here.

Optionally, the change value of the number of transmission resources is greater than or equal to the second parameter value may be that the change value of the number of transmission resources of the terminal device is greater than or equal to the second parameter value; or, the change of the number of transmission resources of the MAC entity of the terminal device The value is greater than or equal to the second parameter value; or, the change value of the number of transmission resources of a MAC entity of the terminal device is greater than or equal to the second parameter value; or, the change value of the number of transmission resources of a link of the terminal device is greater than or equal to the second parameter value; or, the change value of the number of transmission resources of one carrier of the terminal device is greater than or equal to the second parameter value.

Optionally, the change value of the number of transmission resources of the side link is greater than or equal to the second parameter value may be that the change value of the number of transmission resources of the side link of the terminal device is greater than or equal to the second parameter value; The change value of the number of transmission resources of the side link of the MAC entity is greater than or equal to the second parameter value; or, the change value of the number of transmission resources of the side link of one MAC entity of the terminal device is greater than or equal to the second parameter value; or, The change value of the number of transmission resources of the side link of one side link of the terminal device is greater than or equal to the second parameter value; or, the change value of the number of transmission resources of the side link of one side link carrier of the terminal device is greater than or equal to The second parameter value.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the third timer may be a timer under the MAC entity.

Optionally, the unit of the second parameter value may be dB, or may be other units, or no unit.

Optionally, the change value of the transmission resource quantity of the side link may be a change value between the current transmission resource quantity of the side link and the corresponding side link transmission resource quantity when the PHR was sent last time.

Optionally, the transmission resources of the corresponding side link when the PHR was sent last time may include: the transmission resources of the side link where the PHR sent last time is located, or the power headroom included in the content of the PHR sent last time corresponds. The transmission resources of the side link.

The change value of the number of transmission resources of the side link may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the change value of the number of transmission resources of the side link is a positive value, it can indicate that the number of transmission resources of the side link becomes larger; if the change value of the number of transmission resources of the side link is a negative value, it can indicate that the side chain The number of transmission resources of the side link becomes smaller; or, if the change value of the number of transmission resources of the side link is a positive value, it can indicate that the number of transmission resources of the side link becomes smaller; if the change value of the number of transmission resources of the side link is negative value, which can indicate that the number of transmission resources of the side link becomes larger.

Optionally, if the change value of the number of transmission resources of the side link is 0, it may indicate that the number of transmission resources of the side link has not changed.

Optionally, if the change value of the number of transmission resources of the side link is an absolute value, it may represent the value of the change of the number of transmission resources of the side link, but may not indicate that the number of transmission resources of the side link increases or decreases.

Exemplarily, when PHR1 was transmitted last time, one side link of the terminal device obtained side link resource 1 through the first mode, and later, the side link obtained side link resource 2 through the first mode. When the timer expires, and the change value between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the second parameter value, the terminal device triggers PHR2.

Exemplarily, when PHR1 was transmitted last time, a side link carrier of the terminal device obtained side link resource 1 through the first mode, and later, the side link carrier obtained side link resource 2 through the second mode. The third timer times out, and the change value between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the second parameter value, and the terminal device triggers PHR2.

Exemplarily, when PHR1 was transmitted last time, a MAC entity of the terminal device obtained side link resource 1 through the first mode, and later, the MAC entity obtained side link resource 2 through the first mode and the second mode. If The third timer times out and the change value between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the second parameter value, and the terminal device triggers PHR2.

Condition 11: The terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the fourth timer expires, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the carrier has side link resources, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the carrier has uplink resources, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the terminal device has side link resources for transmitting new data, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the terminal device has side link resources for transmitting data, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the terminal device has uplink resources for transmitting new data, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the terminal device has uplink resources for data transmission, and the terminal device determines that the PHR is triggered.

Wherein, the terminal device has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value may be a side link carrier whose MAC entity of the terminal device has a power backoff variation value greater than or equal to the third parameter value.

The fourth timer may be a prohibit timer for uplink PHR reporting, eg, phr-ProhibitTimer for uplink PHR reporting. The fourth timer may also be a timer independent of the disable timer for uplink PHR reporting.

Optionally, the fourth timer can be started or restarted when the terminal device sends the PHR; or, it can be started or restarted after the terminal device sends the PHR; or, it can be started or restarted when the terminal device packages the PHR or calculates the PH; The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout period of the fourth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the fourth timer timeout may include that the fourth timer has just timed out or the fourth timer has timed out.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the power backoff change value is greater than or equal to the third parameter value, including: the duration of the power backoff change value greater than or equal to the third parameter value is greater than or equal to the first preset time.

Optionally, the first preset time may be configured by a network device or terminal device, or may be pre-configured.

Optionally, the fourth timer may be a timer under the MAC entity.

Optionally, the unit of the third parameter value may be dB, or may be other units, or no unit.

Optionally, the power backoff change value includes: a change value between the currently required power backoff and the power backoff required when the terminal device sent the PHR last time; or, the current required power backoff and the last time the terminal device calculated The change value between the required power backoff when PH or packing the PHR; or, the change value between the current required power backoff and the power backoff required when the terminal device triggered the PHR last time; or, the last transmitted PHR The required power backoff corresponding to the power headroom included in the content.

The power backoff change value may be a positive value, a negative value, 0 or an absolute value.

Optionally, if the power backoff change value is positive, it can indicate that the power backoff becomes larger; if the power backoff change value is negative, it can indicate that the power backoff becomes smaller; or, if the power backoff change value is positive If the value is negative, it can indicate that the power backoff becomes smaller; if the power backoff change value is negative, it can indicate that the power backoff becomes larger.

Optionally, if the power backoff change value is 0, it may indicate that the power backoff has not changed.

Optionally, if the power backoff change value is an absolute value, it may indicate the value of the power backoff change, but may not indicate whether the power backoff becomes larger or smaller.

Exemplarily, the fourth timer expires, the MAC entity has side link resources for transmitting new data, the MAC entity has a side link carrier whose power backoff variation value is greater than or equal to the third parameter value, and the carrier has a side link carrier. Road resources; terminal equipment triggers PHR.

Condition 12: The fifth timer expires, the terminal device has side link resources for transmitting data, and for at least one active carrier of the terminal device, the absolute value of the side link path loss change value is greater than or equal to the eighteenth parameter value .

Wherein, the side link resource for transmitting data on the terminal device may be the side link resource for transmitting new data on the terminal device; or the side link resource for transmitting data on the MAC entity; or the side link resource for transmitting new data on the MAC entity edge link resources.

Wherein, the fifth timer may be a prohibition timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting, and the fifth timer may also be independent of that used for uplink PHR reporting The timer that disables the timer reported by the PHR.

Optionally, the fifth timer can be started or restarted when the terminal device sends the PHR, or can be started or restarted after the terminal device sends the PHR, or can be started or restarted when the terminal device packages the PHR or calculates the PH, or can be The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout time of the fifth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the expiration of the fifth timer may include that the fifth timer has just expired or the fifth timer has expired.

Optionally, the unit of the eighteenth parameter value may be dB, or may be other units, or no unit.

Optionally, the fifth timer is a timer under the MAC entity, or a timer under the terminal device.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Exemplarily, the network device configures the timeout time of the fifth timer to be 20 subframes. After the terminal device sends PHR1 to the network device, the fifth timer is started or restarted. If the 20th subframe after the fifth timer is started or restarted, frame, the MAC entity has side link resources for transmitting new data, and for at least one activated carrier of the MAC entity, when the absolute value of the side link path loss change value is greater than or equal to the eighteenth parameter value, trigger PHR2.

Exemplarily, the network device configures the timeout time of the fifth timer to be 20 subframes. After the terminal device sends PHR1 to the network device, the fifth timer is started or restarted. If the 22nd subframe after the fifth timer is started or restarted, frame, the MAC entity has side link resources for data transmission, and for at least one active carrier of the MAC entity, when the absolute value of the side link path loss change value is greater than or equal to the eighteenth parameter value, trigger PHR2.

For the introduction of the variation value of the side link path loss of one carrier, reference may be made to the corresponding introduction in Condition 7, which will not be repeated here.

Wherein, the change value of the path loss of the side link can be a positive value, a negative value or 0.

For an introduction about whether the change value of the side link path loss is a positive value, a negative value or 0, you can refer to the corresponding introduction in Condition 7, and details are not repeated here.

Optionally, the eighteenth parameter value may be the same as or different from the parameter value used in the uplink PHR trigger condition (for example: phr-Tx-PowerFactorChange dB).

For the method for the terminal device to obtain the path loss of the side link, reference may be made to the method described in the above condition 7, and details are not repeated here.

Condition 13: The absolute value of the change value of the number of transmission resources is greater than or equal to the value of the nineteenth parameter.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the value of the nineteenth parameter, and the terminal device determines that the PHR is triggered.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the value of the nineteenth parameter, and the sixth timer expires, and the terminal device determines that the PHR is triggered.

Wherein, the absolute value of the change value of the number of transmission resources may include the absolute value of the change value of the number of transmission resources of the side link.

Wherein, the sixth timer may be a prohibit timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting. The seventh timer may also be a timer independent of the disable timer for uplink PHR reporting.

Optionally, the sixth timer can be started or restarted when the terminal device sends the PHR; or, it can be started or restarted after the terminal device sends the PHR; or, it can be started or restarted when the terminal device packages the PHR or calculates the PH; The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout period of the sixth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the expiration of the sixth timer may include that the sixth timer has just expired or the sixth timer has expired.

Optionally, the transmission resource may be a resource for sending.

Optionally, the transmission resource of the side link can be the side link resource used for sending.

Optionally, the absolute value of the change value of the number of transmission resources may be the absolute value of the change value of the number of uplink transmission resources obtained through the resource acquisition method of the Uu link; or, obtained through the resource acquisition method of the Uu link. The absolute value of the total change value of the number of transmission resources of the uplink and the number of transmission resources of the side link obtained by the resource acquisition method of the second mode; Or, the uplink obtained by the resource acquisition method of the Uu link The absolute value of the total change value of the number of transmission resources of the side link obtained by the resource acquisition method of the first mode and the resource acquisition method of the second mode.

Optionally, the absolute value of the change value of the transmission resource quantity of the side link may be the absolute value of the change value of the transmission resource quantity of the side link obtained by the resource acquisition method of the first mode; The absolute value of the change value of the number of transmission resources of the side link obtained by the resource acquisition method; absolute value.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

For the introduction of the resource acquisition method of the Uu link, the resource acquisition method of the first mode, and the resource acquisition method of the second mode, reference may be made to the corresponding introduction in Condition 9, which will not be repeated here.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the nineteenth parameter value may be that the absolute value of the change value of the number of transmission resources of the terminal device is greater than or equal to the nineteenth parameter value; The absolute value of the change value of the number of transmission resources of the MAC entity is greater than or equal to the value of the nineteenth parameter; or, the absolute value of the change value of the number of transmission resources of one MAC entity of the terminal device is greater than or equal to the value of the nineteenth parameter; or, The absolute value of the change value of the number of transmission resources of one link of the terminal device is greater than or equal to the value of the nineteenth parameter, or the absolute value of the change value of the number of transmission resources of one carrier of the terminal device is greater than or equal to the value of the nineteenth parameter .

Optionally, the absolute value of the change value of the number of transmission resources of the side link is greater than or equal to the nineteenth parameter value may be that the absolute value of the change value of the number of transmission resources of the side link of the terminal device is greater than or equal to the nineteenth parameter value. parameter value; or, the absolute value of the change in the number of transmission resources of the side link of the MAC entity of the terminal device is greater than or equal to the nineteenth parameter value; or, the number of transmission resources of the side link of a MAC entity of the terminal device The absolute value of the change value is greater than or equal to the value of the nineteenth parameter; or, the absolute value of the change value of the number of transmission resources of the side link of one side link of the terminal device is greater than or equal to the value of the nineteenth parameter, or, the terminal device The absolute value of the variation value of the transmission resource quantity of the side link of one side link carrier is greater than or equal to the value of the nineteenth parameter.

Optionally, the sixth timer may be a timer under the MAC entity.

Optionally, the unit of the nineteenth parameter value may be dB, or may be other units, or no unit.

Optionally, the change value of the number of transmission resources of the side link may be a positive value, a negative value or 0.

For an introduction about whether the change value of the number of transmission resources of the side link is a positive value, a negative value or 0, reference may be made to the corresponding introduction in Condition 10, and details are not repeated here.

Exemplarily, when PHR1 was transmitted last time, one side link of the terminal device obtained side link resource 1 through the first mode, and later, the side link obtained side link resource 2 through the first mode. When the timer expires, and the absolute value of the change between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the value of the nineteenth parameter, the terminal device triggers PHR2.

Exemplarily, when PHR1 was transmitted last time, a side link carrier of the terminal device obtained side link resource 1 through the first mode, and later, the side link carrier obtained side link resource 2 through the second mode. When the six timer expires, and the absolute value of the change between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the value of the nineteenth parameter, the terminal device triggers PHR2.

Exemplarily, when PHR1 was transmitted last time, a MAC entity of the terminal device obtained side link resource 1 through the first mode, and later, the MAC entity obtained side link resource 2 through the first mode and the second mode. If The sixth timer expires, and the absolute value of the change between the number of transmission resources of side link resource 2 and the number of transmission resources of side link resource 1 is greater than or equal to the value of the nineteenth parameter, and the terminal device triggers PHR2.

Condition 14: The terminal equipment has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the seventh timer expires, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the carrier has side link resources, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the carrier has uplink resources, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the terminal device has side link resources for transmitting new data, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the terminal device has side link resources for data transmission, and the terminal device determines that the PHR is triggered.

Optionally, if the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the terminal device has uplink resources for transmitting new data, the terminal device determines that the PHR is triggered.

Optionally, the terminal device has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value, and the terminal device has uplink resources for data transmission, and the terminal device determines that the PHR is triggered.

Wherein, the side link carrier in which the absolute value of the power backoff variation value of the terminal device is greater than or equal to the twentieth parameter value may be the MAC entity of the terminal device. The absolute value of the power backoff variation value is greater than or equal to the twentieth parameter value side link carrier.

Wherein, the seventh timer may be a prohibit timer for uplink PHR reporting, for example, phr-ProhibitTimer for uplink PHR reporting. The eighth timer may also be a timer independent of the disable timer for uplink PHR reporting.

Optionally, the seventh timer can be started or restarted when the terminal device sends the PHR; or, it can be started or restarted after the terminal device sends the PHR; or, it can be started or restarted when the terminal device packages the PHR or calculates the PH; The terminal device starts or restarts after packing PHR or calculating PH.

Optionally, the timeout time of the seventh timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the seventh timer timeout may include that the seventh timer has just timed out or the seventh timer has timed out.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, including: the duration of the absolute value of the power backoff change value greater than or equal to the twentieth parameter value is greater than or equal to the second preset time .

Optionally, the second preset time may be configured by the network device or the terminal device, or may be preconfigured.

Optionally, the seventh timer may be a timer under the MAC entity.

Optionally, the unit of the twentieth parameter value may be dB, or may be other units, or no unit.

Optionally, the power backoff change value includes: a change value between the currently required power backoff and the power backoff required when the terminal device sent the PHR last time; or, the current required power backoff and the last time the terminal device calculated The change value between the required power backoff when PH or packing the PHR; or, the change value between the current required power backoff and the power backoff required when the terminal device triggered the PHR last time; or, the last transmitted PHR The required power backoff corresponding to the power headroom included in the content.

Optionally, the power backoff change value may be a positive value, a negative value or 0.

For an introduction about whether the power backoff change value is a positive value, a negative value or 0, reference may be made to the corresponding introduction in Condition 11, which will not be repeated here.

Exemplarily, the seventh timer expires, the MAC entity has side link resources for transmitting new data, the MAC entity has a side link carrier whose absolute value of the power backoff variation value is greater than or equal to the third parameter value, and the carrier Side link resources exist; end device triggers PHR.

Condition 15: The eighth timer times out.

It should be noted that the eighth timer may be a periodic timer used for uplink PHR reporting, for example, a phr-PeriodicTimer used for uplink PHR reporting, and the eighth timer may also be independent of The timer of the periodic timer for uplink PHR reporting.

Optionally, the eighth timer may be started when the terminal device sends the PHR, or may be started after the terminal device sends the PHR.

Optionally, the timeout period of the eighth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the timeout of the eighth timer may include that the eighth timer has just expired or the eighth timer has expired.

Optionally, the terminal device may maintain one or more independent MAC entities for the side links; or, the terminal device does not maintain independent MAC entities for the side links.

Optionally, the eighth timer may be a timer under the one or more independent MAC entities, or the eighth timer may be a timer under the MAC entity.

Exemplarily, when the eighth timer expires, the terminal device triggers the PHR.

Condition 16: The higher layer configures or reconfigures the power headroom reporting function, and the configuration is not used to disable the function.

Optionally, the high-level configuration or reconfiguration of the power headroom reporting function may include the high-level configuration or reconfiguration of the power headroom reporting function on the side link; or, the high-level configuration or reconfiguration of the power headroom reporting function on the uplink; or , the upper layer configures or reconfigures the power headroom reporting function on the side link and the uplink; or, the upper layer configures or reconfigures the total power headroom reporting function on the side link and the uplink.

Optionally, the terminal device may maintain one or more independent MAC entities for side links; or, the terminal device may not maintain independent MAC entities for side links.

Optionally, the high-layer configuration or reconfiguration power headroom reporting function may be a function under the one or more independent MAC entities; or the high-layer configuration or reconfiguration power headroom reporting function may be a function under the MAC entity.

Exemplarily, the higher layer configures or reconfigures the power headroom reporting function, and the configuration is not for disabling the function; the terminal device triggers the PHR.

In operation 302, the terminal device sends the PHR to the network device.

Further, after the above-mentioned PHR is triggered, if the terminal device does not have uplink resources available for sending the above-mentioned PHR, the terminal device may also request the network device for uplink resources used for sending the PHR. Specifically, as shown in FIG. 7 , operation 302 includes operations 701-703.

Wherein, that the terminal device has no uplink resources available for sending the PHR may include: a duration of the terminal device having no uplink resources available for sending the PHR is greater than or equal to a third preset time.

Optionally, the third preset time may be configured by a network device or a terminal device, or may be pre-configured.

Optionally, the third preset time may be the time when the terminal device obtains the first side link resource after the PHR is triggered.

Exemplarily, after the PHR is triggered, the terminal device has no uplink resources available for sending the PHR for a duration greater than or equal to a third preset time, and the terminal device requests the network device for uplink resources for sending the PHR.

Exemplarily, after the PHR is triggered, the terminal device has no uplink resources that can be used to send the above PHR, and until the terminal device obtains the first side link resource, the terminal device still has no uplink resources that can be used to send the above PHR. Request uplink resources for sending the PHR from the network device.

Wherein, obtaining the first side link resource for the terminal device may obtain the first side link resource for sending for the terminal device.

Optionally, when the terminal device obtains the first side link resource, the MAC entity of the terminal device can obtain the first side link resource; or, a MAC entity of the terminal device obtains the first side link resource; or, the terminal One side link of the device obtains the first side link resource; or, one carrier of the terminal device obtains the first side link resource.

Operation 701: If the PHR is triggered, the terminal device triggers a request, where the request is used to request uplink resources for the above-mentioned PHR.

It should be noted that, if the PHR is triggered and the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, the terminal device may trigger a request, and the request is used to request uplink resources for the PHR.

Optionally, the fact that the terminal device does not have uplink resources that can be used to send the PHR includes: the MAC entity of the terminal device has no uplink resources that can be used to send the PHR.

Optionally, the MAC entity may be the MAC entity associated with the triggered PHR.

Optionally, the MAC entity of the terminal device may include all MAC entities of the terminal device, or one MAC entity of the terminal device. The one MAC entity may be a MAC entity maintained by the terminal device for the primary base station, or a MAC entity maintained by the terminal device for the secondary base station.

Optionally, the fact that the terminal device has no uplink resources available for sending the above-mentioned PHR may indicate that the uplink transmission is very sparse or there is no uplink transmission, and the PHR cannot be sent.

Optionally, the request is a buffer status report (buffer status report, BSR), or the request is a scheduling request (scheduling request, SR).

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, the terminal device triggers the BSR.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, the terminal device triggers the SR.

Optionally, the BSR includes any one of the following: a padding BSR, a regular BSR, a periodic BSR, or other BSRs. Optionally, the other BSR may be a PHR BSR, a side link PHRBSR, or a side link BSR, etc., and the other BSR may be used to request uplink resources for the above PHR.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above PHR, the network device allocates uplink resources to the terminal device, and the number of bits filled is greater than or equal to the BSRMAC control element (control element, CE) and its subheader. The number of bits that the terminal device triggers to fill the BSR.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, it triggers the filling of the BSR.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, the regular BSR is triggered.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, the periodic BSR is triggered.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the above-mentioned PHR, other BSRs are triggered.

Further, if the terminal device fails to request uplink resources for the PHR after triggering the BSR, the terminal device triggers an SR, and the SR is used to request uplink resources for the PHR.

Optionally, the failure to request uplink resources for the PHR may include: the triggered regular BSR fails to be successfully sent; or the triggered regular BSR fails to successfully apply for uplink resources; or the triggered padding BSR fails to send successfully ; Or, the triggered padding BSR fails to successfully apply for uplink resources; Or, the triggered periodic BSR fails to successfully send; Or, the triggered periodic BSR fails to successfully apply for uplink resources; Or, other triggered BSRs fail to send successfully ; Or, other triggered BSRs fail to successfully apply for uplink resources.

Optionally, when the triggered filling BSR fails to successfully apply for the uplink resource, the buffer status (bufferstatus, BS) may be 0.

Optionally, if the request is an SR, the terminal device receives the SR configuration information from the network device, the SR configuration information is used to configure the SR, and the SR is used to request uplink resources for the PHR; SR configuration information.

Wherein, the SR configuration information stored by the terminal device for applying for uplink resources for the PHR includes the SR configuration information configured by the terminal device or pre-configured for applying for uplink resources for the PHR.

It should be noted that the terminal device can configure the SR according to the SR configuration information. After the network device receives the SR sent by the terminal device, the network device knows that the terminal device wants to request uplink resources for sending PHR. Therefore, the network device can be The terminal equipment allocates appropriate uplink resources to meet the reporting of PHR.

Exemplarily, if the terminal device does not have uplink resources available for sending the PHR, the network device allocates uplink resources to the terminal device, and the number of bits filled is greater than or equal to the number of bits of the BSR MAC CE and its subheader, and the terminal device triggers the padding. BSR, if the application for uplink resources is successful, the network device can allocate uplink resources for sending PHR to the terminal device according to the filled BSR; if the application for uplink resources fails (for example, the buffer status (BS) is 0), the terminal device triggers SR , if the application for uplink resources is successful, the network device can allocate uplink resources for the terminal device for sending PHR according to the sent SR; if the application for uplink resources fails, the terminal device triggers random access.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the PHR, the terminal device triggers a regular BSR or a padding BSR or a periodic BSR or other BSRs. The BSR or other BSRs allocate uplink resources for the terminal equipment to send PHR; if the application for uplink resources fails (for example, the BSR fails to be sent successfully, or the buffer status (BS) is 0, etc.), the terminal equipment triggers the SR , if the application for uplink resources is successful, the network device can allocate uplink resources for the terminal device for sending PHR according to the sent SR; if the application for uplink resources fails, the terminal device triggers random access.

Exemplarily, if the terminal device determines that there is no uplink resource available for sending the PHR, the terminal device triggers the SR, and if the application for the uplink resource is successful, the network device may allocate the terminal device the uplink resource for sending the PHR according to the sent SR; If the uplink resource fails, the terminal device triggers random access.

In operation 702, the terminal device receives a request response sent by the network device, where the request response includes uplink resources for PHR.

In operation 703, the terminal device sends the PHR to the network device.

Optionally, the terminal device sends the PHR to the network device on the uplink resources allocated by the network device that can be used for sending the PHR.

Optionally, the PHR includes power headroom information of the side link of the terminal device.

Wherein, the power headroom information of the side link of the terminal device may include one or more of the following information: the power headroom calculated independently by the side link, the power headroom calculated separately by the resource acquisition method of the first mode of the side link , the power headroom calculated by the side link second mode resource acquisition method separately, the power headroom calculated separately by the uplink, the total power headroom calculated by the side link and the uplink, and the side link first mode resource acquisition mode and the total power headroom calculated by the uplink, and the resource acquisition mode of the second mode of the side link and the total power headroom calculated by the uplink.

Further, as shown in FIG. 8 , before operation 302 , operation 801 is also included.

Operation 801: The terminal device determines the first information.

Wherein, the first information is used to instruct the terminal device to report the power headroom information of the side link; or, it is used to instruct the terminal device not to report the power headroom information of the side link.

Optionally, if the first information is used to instruct the terminal equipment to report the power headroom information of the side link, the first information may also include the number of reported PHRs (for example: 1 PHR, 2 PHRs, 3 PHRs). or multiple PHRs, etc.).

Exemplarily, if the first information indicates that one PHR is reported, the PHR may include one or more of the following information: the power headroom calculated independently by the side link, and the resource obtained in the first mode of the side link calculated independently. Power headroom, the power headroom calculated by the resource acquisition mode of the second mode of the side link, the power headroom calculated by the uplink separately, the total power headroom calculated by the side link and the uplink, the side link first The mode resource acquisition method and the total power headroom calculated by the uplink, the side link second mode resource acquisition method and the total power headroom calculated by the uplink.

Exemplarily, if the first information indicates that multiple PHRs are reported, each PHR may include one or more of the following information: the power headroom calculated independently by the side links, and the resource acquisition methods in the first mode of the side links are calculated separately. The power headroom calculated by the second mode resource acquisition method of the side link separately, the power headroom calculated separately for the uplink, the total power headroom calculated by the side link and the uplink, the power headroom calculated by the side link No. The resource acquisition method of the first mode and the total power headroom calculated by the uplink, and the resource acquisition method of the second mode of the side link and the total power headroom of the uplink calculation.

For the introduction of the resource acquisition method in the first mode and the resource acquisition method in the second mode, reference may be made to the corresponding introduction in Condition 9, which will not be repeated here.

Optionally, the terminal device determines the first information according to the indication information sent by the network device; optionally, the indication information sent by the network device is the first information, or the terminal device determines the first information according to pre-stored indication information , the indication information is used to indicate the first information, and optionally, the pre-stored indication information is the first information.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above-mentioned functions, the above-mentioned terminal equipment or network equipment includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the unit and algorithm operations of each example described in conjunction with the embodiments disclosed herein can be implemented in hardware or in the form of a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the terminal device may be divided into functional modules according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

For example, in the case of dividing each functional module in an integrated manner, FIG. 9 shows a schematic structural diagram of a terminal device 90 . The terminal device 90 includes: a determining module 901 and a sending module 902 . The determining module 901 is used for the terminal device to determine the PHR trigger; the sending module 902 is used for the terminal device to send the PHR to the network device; if any of the following conditions are satisfied, the PHR triggers: the side link connection is established; or, the side link connection Release; or, the activation of the side link of the terminal device; or, the activation of a side link carrier of the terminal device; or, the terminal device starts to have side link resources for transmitting data; or, the terminal device starts to have side link transmission; Or, the first timer expires, the terminal device has side link resources for transmitting data, and for at least one active carrier of the terminal device, the change value of the side link path loss is greater than or equal to the first parameter value; or, The terminal device performs multicast communication with other terminal devices and meets the first condition; or, the resource acquisition mode is switched; or, the change value of the number of transmission resources is greater than or equal to the second parameter value; or, the terminal device has a power backoff change The side link carrier whose value is greater than or equal to the value of the third parameter; wherein, the side link is a directly connected wireless communication link between the terminal equipment and other terminal equipment.

Optionally, the establishment of the side link connection includes: starting the establishment of the side link connection or ending the establishment of the side link connection.

Optionally, the resource acquisition mode is converted, including: the resource acquisition mode supporting the first mode is converted into a resource acquisition mode supporting the second mode; or, the resource acquisition mode supporting the first mode is converted into supporting the first mode and the second mode. The resource acquisition mode of the mode; or, the resource acquisition mode supporting the first mode and the second mode is converted into the resource acquisition mode supporting the second mode.

Optionally, the resource acquisition method in the first mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition method in the second mode includes: the terminal device selects the side link transmission resources; or, the resources in the second mode The acquisition method includes: the network device configures side link transmission resources for the terminal equipment, and the resource acquisition method in the first mode includes: the terminal equipment selects the side link transmission resources.

Optionally, the first condition includes: the terminal equipment performs multicast communication, establishes M side links, and the terminal equipment obtains the change value of the side link path loss of each side link, and there are a total of M side link path loss changes. value; the number of the M edge link path loss change values greater than or equal to the fourth parameter value is greater than or equal to N; The ratio of M is greater than or equal to R; or, the average value of the M side link path loss variation values is greater than or equal to the sixth parameter value; or, the maximum value of the M side link path loss variation values is greater than or equal to the seventh parameter parameter value; or, the change value of the maximum value among the M edge link path losses is greater than or equal to the eighth parameter value, wherein the change value of the maximum value is used to indicate the change between the maximum values obtained twice; wherein, M is a positive integer, N is a non-negative number, and R is greater than or equal to 0 and less than or equal to 1.

Optionally, the terminal device obtains the side link path loss variation value of each side link, including: for each side link, determining the maximum value among the side link path loss variation values of the measured carriers, and determining the maximum value. The value is the side link path loss variation value of the side link; or, for each side link, determine the minimum value of the side link path loss variation values of the measured carrier, and determine the minimum value as the side link path loss variation value. The change value of the side link path loss; or, for each side link, determine the average value of the side link path loss change value of the measured carrier, and determine the average value as the side link path loss change value of the side link .

Optionally, the change value of the side link path loss of the carrier includes: a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference during the last PHR transmission ; or, the change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference during the last power headroom PH calculation or PHR packing; or, the current side link The change between the path loss measured at the path path loss reference and the path loss measured at the side link path loss reference at the last PHR trigger.

Optionally, the power backoff change value includes: a change value between the currently required power backoff and the power backoff required when the terminal device sent the PHR last time; or, the current required power backoff and the last time the terminal device calculated The change value between the required power backoff when PH or packing the PHR; or, the change value between the current required power backoff and the power backoff required when the terminal device triggered the PHR last time.

Optionally, the power backoff change value is greater than or equal to the third parameter value, including: the duration of the power backoff change value greater than or equal to the third parameter value is greater than or equal to the first preset time.

Optionally, as shown in FIG. 10 , the terminal device further includes: a triggering module 903 . The triggering module 903 is used for the terminal device to trigger the request, and the request is used to request uplink resources for the PHR.

Optionally, the determining module 901 is further configured for the terminal device to determine that there is no uplink resource for the PHR.

Optionally, the request is BSR, or, the request is SR.

Optionally, the triggering module 903 is further configured to, if the terminal device fails to request the uplink resource for the PHR through the BSR, the terminal device triggers an SR, and the SR is used to request the uplink resource for the PHR.

Optionally, the BSR includes any one of the following: a padding BSR, a regular BSR, or a periodic BSR.

Optionally, as shown in FIG. 11 , the terminal device further includes: a receiving module 904 . The receiving module 904 is used for the terminal device to receive the SR configuration information from the network device, where the SR configuration information is used to configure the SR, and the SR is used to request uplink resources for the PHR; or, the terminal device stores the SR configuration information.

Optionally, the PHR includes power information of side links of the terminal equipment.

Optionally, the determining module 901 is further configured for the terminal device to determine first information, where the first information is used to instruct the terminal device to report the power information of the side link.

Optionally, the terminal device determines the first information according to the indication information sent by the network device; or, the terminal device determines the first information according to pre-stored indication information.

Wherein, all relevant contents of the operations involved in the foregoing method embodiments can be cited in the functional descriptions of the corresponding functional modules, which will not be repeated here.

In this embodiment, the terminal device 90 is presented in the form of dividing each functional module in an integrated manner. "Module" herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above. In a simple embodiment, those skilled in the art can imagine that the terminal device 90 can take the form shown in FIG. 2 .

For example, the processor 201 in FIG. 2 can make the terminal device 90 execute the PHR triggering method in the above method embodiments by calling the computer execution instructions stored in the memory 203 .

Exemplarily, the functions/implementation processes of the determining module 901 , the sending module 902 , the triggering module 903 and the receiving module 904 in FIG. 11 may be implemented by the processor 201 in FIG. 2 calling the computer-executed instructions stored in the memory 203 . Alternatively, the functions/implementation process of the determining module 901 and the triggering module 903 in FIG. 11 can be implemented by the processor 201 in FIG. 2 calling the computer-executed instructions stored in the memory 203, and the sending module 902 and the receiving module 904 in FIG. 11 The function/implementation process can be realized through the communication interface 204 in FIG. 2 .

Since the terminal device 90 provided in this embodiment can execute the above-mentioned PHR triggering method, the technical effects that can be obtained may refer to the above-mentioned method embodiments, and details are not repeated here.

It should be noted that the terminal devices provided in the embodiments of the present application can be applied to multiple fields, for example: the field of smart cars, the field of digital cars, the field of unmanned cars, the field of Internet of Vehicles, the field of automatic cars, the field of pure electric vehicles, the field of hybrid vehicles Automotive, extended-range electric vehicles, plug-in hybrid vehicles, and new energy vehicles, etc.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g. coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center. Computer-readable storage media can be any available media that can be accessed by a computer or data storage devices including one or more servers, data centers, etc., that can be integrated with the media. Useful media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

Although the application is described herein in conjunction with various embodiments, in practicing the claimed application, those skilled in the art can understand and implement the disclosure by reviewing the drawings, the disclosure, and the appended claims Other variations of the embodiment. In the claims, the word "comprising" does not exclude other components or operations, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be combined to advantage.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (24)

1. A Power Headroom Report (PHR) triggering method, the method comprising:

the terminal equipment determines PHR triggering;

the terminal equipment sends the PHR to network equipment;

when any one of the following conditions is met, the PHR triggers:

establishing side link connection; or,

releasing the connection of the side link; or,

activating a side link of the terminal equipment; or,

activating a side link carrier of the terminal equipment; or,

the terminal equipment starts to have side link resources for transmitting data; or,

the terminal equipment starts edge link transmission; or,

when the first timer is overtime, the terminal equipment has side link resources for transmitting data, and for at least one activated carrier of the terminal equipment, the change value of the side link path loss is greater than or equal to a first parameter value; or,

the terminal equipment performs multicast communication with other terminal equipment and meets a first condition; or,

the resource acquisition mode is converted; or,

the change value of the transmission resource quantity is larger than or equal to the second parameter value; or,

the terminal equipment has side link carriers with the power back-off change value larger than or equal to a third parameter value;

the side link is a direct connection wireless communication link between the terminal device and other terminal devices.

2. The method of claim 1, wherein the side-link connection establishment comprises: the side link connection establishment starts or the side link connection establishment ends.

3. The method of claim 1, wherein the resource acquisition mode is transformed, comprising:

converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; or,

converting the resource acquisition mode supporting the first mode into the resource acquisition mode supporting the first mode and the second mode; or,

and converting the resource acquisition mode supporting the first mode and the second mode into the resource acquisition mode supporting the second mode.

4. The method of claim 3, wherein the first mode of resource acquisition comprises: the network device configures side link transmission resources for the terminal device, and the resource obtaining mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource obtaining mode in the first mode includes: and the terminal equipment selects the side link transmission resource.

5. The method of claim 1, wherein the first condition comprises:

for M edge links of the terminal equipment for multicast communication, the terminal equipment obtains edge link path loss change values of each edge link, and the edge link path loss change values are M in total;

the number of the fourth parameter values which are greater than or equal to the number of the M side link path loss change values is greater than or equal to N; or,

the ratio of the number of the fifth parameter values which are greater than or equal to the M side link path loss change values to M is greater than or equal to R; or,

the average value of the M side link path loss change values is greater than or equal to a sixth parameter value; or,

a maximum value of the M side link path loss change values is greater than or equal to a seventh parameter value; or,

a variation value of a maximum value among the M edge link path losses is greater than or equal to an eighth parameter value, wherein the variation value of the maximum value is used for indicating a variation between two obtained maximum values;

wherein M is a positive integer, N is a non-negative number, R is greater than or equal to 0 and R is less than or equal to 1.

6. The method of claim 5, wherein the obtaining, by the end device, the edge link path loss variation value for each edge link comprises:

for each side link, determining the maximum value in the measured side link path loss change values of the carrier, and determining the maximum value as the side link path loss change value of the side link; or,

for each side link, determining the minimum value of the side link path loss change values of the carrier measured by the side link, and determining the minimum value as the side link path loss change value of the side link; or,

and for each side link, determining the average value of the side link path loss change values of the carrier waves measured by the side link, and determining the average value as the side link path loss change value of the side link.

7. The method of claim 6, wherein the side link path loss variation value of the carrier comprises:

a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR transmission; or,

a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; or,

a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR trigger.

8. The method of claim 1, wherein the power backoff change value comprises:

a change value between a currently required power backoff and a power backoff required when the terminal device transmits the PHR last time; or,

a change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or the packing PHR last time; or,

a change value between a currently required power backoff and a power backoff required the last time the terminal device triggers the PHR.

9. The method of claim 1 or 8, wherein the power backoff change value is greater than or equal to the third parameter value, comprising: the duration of the power backoff change value being greater than or equal to the third parameter value is greater than or equal to a first preset time.

10. The method according to any of claims 1-9, wherein before the terminal device sends the PHR to the network device, the method further comprises:

the terminal equipment triggers a request, and the request is used for requesting uplink resources for the PHR.

11. The method according to claim 10, wherein the request is a Buffer Status Report (BSR) or wherein the request is a Scheduling Request (SR).

12. The method of claim 11, wherein when the request is the BSR, the method further comprises: the terminal equipment fails to request uplink resources for the PHR through the BSR, the terminal equipment triggers the SR, and the SR is used for requesting the uplink resources for the PHR.

13. The method according to claim 11 or 12, wherein the BSR includes any one of: padding BSR, regular BSR, or periodic BSR.

14. The method according to claim 11 or 12, characterized in that the method further comprises:

the terminal equipment receives SR configuration information from network equipment, wherein the SR configuration information is used for configuring the SR, and the SR is used for requesting uplink resources for the PHR; or,

the terminal equipment stores the SR configuration information.

15. The method of any of claims 1-14, wherein the PHR comprises power headroom information for an edge link of the terminal device.

16. The method according to any of claims 1-15, wherein before the terminal device sends the PHR to the network device, the method further comprises:

the terminal equipment determines first information, wherein the first information is used for indicating the terminal equipment to report the power headroom information of the side link.

17. The method of claim 16,

the terminal equipment determines the first information according to the indication information sent by the network equipment; or,

and the terminal equipment determines the first information according to the pre-stored indication information.

18. The method according to any of the claims 1 to 17, wherein said first timer is a prohibit timer PHR-ProhibitTimer reported by an uplink PHR; or the first timer is a prohibition timer PHR-ProhibitTimer reported by the side link PHR;

wherein the uplink is a wireless communication link from the terminal device to a network device.

19. A terminal device, characterized in that the terminal device comprises:

a determination module for determining a PHR trigger;

a sending module, configured to send the PHR to a network device;

when any one of the following conditions is met, the PHR triggers:

establishing side link connection; or,

releasing the connection of the side link; or,

activating a side link of the terminal equipment; or,

activating a side link carrier of the terminal equipment; or,

the terminal equipment starts to have side link resources for transmitting data; or,

the terminal equipment starts edge link transmission; or,

when the first timer is overtime, the terminal equipment has side link resources for transmitting data, and for at least one activated carrier of the terminal equipment, the change value of the side link path loss is greater than or equal to a first parameter value; or,

the terminal equipment performs multicast communication with other terminal equipment and meets a first condition; or,

the resource acquisition mode is converted; or,

the change value of the transmission resource quantity is larger than or equal to the second parameter value; or,

the terminal equipment has side link carriers with the power back-off change value larger than or equal to a third parameter value;

the side link is a direct connection wireless communication link between the terminal device and other terminal devices.

20. A communication apparatus, characterized in that the communication apparatus comprises:

at least one processor, a memory;

the memory stores program instructions that are executed in the at least one processor to implement the functionality of the terminal device or the network device in the method of any of claims 1-18.

21. A system-on-chip (SOC) for use in a terminal device or a network device, the SOC comprising:

at least one processor in which program instructions are executed to implement the functions of the terminal device or the network device in the method of any one of claims 1-18.

22. A computer storage medium, wherein program instructions are stored in the computer readable storage medium, and when executed, implement the functions of the terminal device or the network device in the method according to any one of claims 1 to 18.

23. A computer program product comprising program instructions which, when executed, implement the functionality of a terminal device or a network device as claimed in any one of claims 1 to 18.

24. A communication system, characterized in that the communication system comprises any one or any of the following:

the terminal device of claim 19, or the communication apparatus of claim 20, or the system-on-chip of claim 21, or the computer storage medium of claim 22, or the computer program product of claim 23.

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