CN109600832B - Paging message transmission method and device - Google Patents

Abstract

The application relates to the technical field of wireless communication, in particular to a paging message transmission method, which comprises the following steps: the network equipment configures frequency domain resources for transmitting paging messages; and the network equipment sends paging indication information to the terminal equipment, wherein the paging indication information is used for indicating the frequency domain resource for transmitting the paging message. The application also provides a network device applying the network paging message transmission method, and a paging message transmission method and a terminal device correspondingly applied to the terminal device.

Description

Paging message transmission method and device

Technical field

The present application relates to the field of wireless communication technology, and in particular, to a paging message transmission method, network equipment and terminal equipment.

Background technique

In the next generation communication standard (5G), a new bandwidth method is proposed, making it possible to send SSB on a partial bandwidth (BWP). Taking the large-bandwidth scenario as an example, in order to support users with different bandwidth capabilities, gNB will send multiple synchronization signal blocks (SSB) on a large-bandwidth carrier. Sending the same paging (Paging) message on multiple BWPs will cause the paging message to occupy too much downlink transmission resources, occupy the available resources for sending other data, and reduce the transmission efficiency of the system. Considering that 5G will support high-frequency transmission, the eNB needs to repeatedly send Paging messages in each beam direction, further increasing the transmission resources occupied by paging messages.

Contents of the invention

Embodiments of the present invention provide a paging message transmission method and device, which improves communication efficiency by reducing the resource occupancy rate when paging messages are sent in downlink.

In a first aspect, this application provides a method for transmitting paging messages, including: a network device configuring frequency domain resources for transmitting paging messages; and the network device sending paging indication information to a terminal device, where the paging indication information is used to indicate The frequency domain resource for transmitting the paging message.

In a possible design, the network device sends at least one remaining system information RMSI to the terminal device, and the paging indication information is carried and sent on the at least one RMSI.

In yet another possible design, the network device sends at least one synchronization signal block SSB to the terminal device, and the paging indication information is carried and sent on the at least one synchronization signal block SSB.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI and sent; wherein each synchronization signal block includes RMSI indication information, the RMSI indication information is used to indicate the location of the one RMSI to the terminal device.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried and sent in the one RMSI; wherein,

The plurality of synchronization signal blocks include a first synchronization signal block associated with the first RMSI, the first synchronization signal block includes RMSI indication information, and the RMSI indication information is used to indicate to the terminal device that the The location of RMSI;

The plurality of synchronization signal blocks other than the first synchronization signal block are second synchronization signal blocks, the second synchronization signal block includes the first synchronization signal block indication information, and the first synchronization signal block indication The information is used to indicate the relative position of the first synchronization signal block and the second synchronization signal block.

In yet another possible design, when the network device is applied in an unlicensed frequency band, the paging message is carried and sent on a paging frame, and the RMSI also includes one or more of the following parameters: A time offset value is used to indicate the offset value of the paging frame relative to the starting time of the wireless frame transmitted by the network device; a second time interval is used to indicate when the terminal equipment is in the paging indication information. When no paging message is heard on the indicated BWP, the maximum time interval for continuously listening to paging messages; the length of the paging frame.

In a second aspect, this application also proposes a network device, including: a processor configured to configure frequency domain resources for transmitting paging messages; and a transceiver configured to send paging indication information to a terminal device. The paging indication information Used to indicate the frequency domain resource for transmitting the paging message.

In a possible design, the transceiver is further configured to send at least one remaining system information RMSI to the terminal device, and the paging indication information is carried and sent on the at least one RMSI.

In yet another possible design, the transceiver is further configured to send at least one synchronization signal block SSB to the terminal device, and the paging indication information is carried and sent on the at least one synchronization signal block SSB.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI and sent; wherein, in each synchronization signal block, RMSI indication information is included, and the RMSI indication information is used to indicate the location of the one RMSI to the terminal device.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried and sent in the one RMSI; wherein,

The plurality of synchronization signal blocks include a first synchronization signal block associated with the first RMSI, the first synchronization signal block includes RMSI indication information, and the RMSI indication information is used to indicate to the terminal device that the The location of RMSI;

The plurality of synchronization signal blocks other than the first synchronization signal block are second synchronization signal blocks, the second synchronization signal block includes the first synchronization signal block indication information, and the first synchronization signal block indication The information is used to indicate the relative position of the first synchronization signal block and the second synchronization signal block.

In yet another possible design, when the network device is applied in an unlicensed frequency band, the paging message is carried and sent on a paging frame, and the RMSI also includes one or more of the following parameters: A time offset value is used to indicate the offset value of the paging frame relative to the starting time of the wireless frame transmitted by the network device; a second time interval is used to indicate when the terminal equipment is in the paging indication information. When no paging message is heard on the indicated BWP, the maximum time interval for continuously listening to paging messages; the length of the paging frame.

In a third aspect, this application also proposes a method for transmitting paging messages, including: a terminal device receiving paging indication information from a network device; and the terminal device determining a frequency domain for transmitting paging messages based on the paging indication information. resources, and receive paging messages on the frequency domain resources indicated by the paging information.

In a possible design, the terminal device also receives at least one remaining system information RMSI from the network device, and the paging indication information is carried and sent on the at least one RMSI.

In yet another possible design, the terminal device also receives at least one synchronization signal block SSB from the network device, and the paging indication information is carried and sent on the at least one synchronization signal block SSB.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI and sent; wherein each synchronization signal block includes RMSI indication information, the RMSI indication information is used to indicate the location of the one RMSI to the terminal device.

In yet another possible design, when the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried and sent in the one RMSI; wherein,

The plurality of synchronization signal blocks include a first synchronization signal block associated with the first RMSI, the first synchronization signal block includes RMSI indication information, and the RMSI indication information is used to indicate to the terminal device that the The location of RMSI;

The plurality of synchronization signal blocks other than the first synchronization signal block are second synchronization signal blocks, the second synchronization signal block includes the first synchronization signal block indication information, and the first synchronization signal block indication The information is used to indicate the relative position of the first synchronization signal block and the second synchronization signal block.

In yet another possible design, when the terminal device is used in an unlicensed frequency band, the terminal device determines the location of the paging message frame based on the paging indication information, and the paging indication information includes the following One or more of the parameters:

A first time offset value, used to indicate the offset value of the paging frame relative to the starting time of the wireless frame transmitted by the network device;

The second time interval is used to indicate the maximum time interval for continuously listening to paging messages when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;

The length of the paging frame.

In yet another possible design, when the network device is configured to send paging messages on multiple BWPs, the terminal device selects the BWP with the smallest first time offset value based on the first time offset value. Start receiving paging messages.

In yet another possible design, if the terminal device does not receive the paging message within the second time interval, the terminal device jumps to the next BWP, and the next BWP has the smallest number of remaining BWPs. the first time offset value.

In the fourth aspect, this application proposes a terminal device, including:

A transceiver for receiving paging indication information from network equipment;

The processor determines a frequency domain resource used to transmit a paging message according to the paging indication information, and receives the paging message on the frequency domain resource indicated by the paging information.

In yet another possible design, when the terminal device is used in an unlicensed frequency band, the processor determines the location of the paging message frame based on the paging indication information, and the paging indication information includes the following One or more of the parameters:

A first time offset value, used to indicate the offset value of the paging frame relative to the starting time of the wireless frame transmitted by the network device;

The second time interval is used to indicate the maximum time interval for continuously listening to paging messages when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;

The length of the paging frame.

In yet another possible design, when the network device is configured to send paging messages on multiple BWPs, the processor determines from the first time offset value the smallest one based on the first time offset value. BWP starts receiving paging messages.

In yet another possible design, if the terminal device does not receive the paging message within the second time interval, the terminal device jumps to the next BWP, and the next BWP has the smallest number of remaining BWPs. the first time offset value.

In a fifth aspect, the present application provides a computer-readable storage medium in which instructions are stored, which when run on a computer, cause the computer to execute the methods described in the above aspects.

In a sixth aspect, the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in the above aspects.

Description of the drawings

Figure 1 is a schematic diagram of the application scenario of the embodiment of the present application;

Figure 2 is a schematic flow chart of the paging message transmission method of the present application;

Figure 3 is a schematic diagram of paging message transmission for multiple partial bandwidth BWPs in one embodiment;

Figure 4 is a schematic diagram of paging message transmission of multiple partial bandwidth BWPs in yet another embodiment;

Figure 5 is a schematic diagram of paging message transmission of multiple partial bandwidth BWPs in yet another embodiment;

Figure 6 is a schematic diagram of paging message transmission including multiple partial bandwidth BWPs in an embodiment in an unlicensed frequency band scenario;

Figure 7 is a simplified structural schematic diagram of a network device in an embodiment of the present application;

Figure 8 is a simplified structural schematic diagram of a terminal device in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

Please refer to Figure 1, which is a simplified schematic diagram of a network architecture applying an embodiment of the present application. The network architecture may be the network architecture of a wireless communication system, and may include network equipment and terminal equipment. The network equipment and terminal equipment are connected through wireless communication technology. . It should be noted that the number and form of terminal devices and network devices shown in Figure 1 do not constitute a limitation on the embodiments of the present application. In different implementations, a network device can be connected to one or more terminal devices. Network devices may also be connected to core network devices, which are not shown in Figure 1.

It should be noted that the wireless communication systems mentioned in the embodiments of this application include but are not limited to: narrow band-internet of things (NB-IoT), global system for mobile communications (GSM), Enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (code division multiple access, CDMA2000), time division synchronization Code division multiple access system (time division-synchronization code division multiple access, TD-SCDMA), long term evolution system (long term evolution, LTE), fifth generation mobile communication system and future mobile communication system.

In this embodiment of the present application, the above-mentioned network device is a device deployed in a wireless access network to provide wireless communication functions for terminal equipment. Network equipment may include, but is not limited to, a base station (Base Station, BS), a network controller, a transmission and reception point (TRP), a mobile switching center, or a wireless access point in wifi. For example, through wireless Channel The device that communicates directly with the terminal equipment is usually a base station. The base station may include various forms of macro base stations, micro base stations, relay stations, access points or remote radio units (Remote Radio Units, RRUs), etc. Of course, the terminal device that performs wireless communication may also be other network devices with wireless communication functions, and this application does not impose a unique limitation on this. It should be noted that in different systems, the names of equipment with base station functions may be different. For example, in the LTE network, it is called evolved NodeB (eNB or eNodeB). In the third generation (the In the 3rd Generation (3G) network, it is called Node B (Node B), etc. In the 5G network, it is called 5G base station (NRNodeB, gNB).

Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and/or data connectivity to users. , for example, a handheld device with wireless connectivity, a vehicle-mounted device, a wearable device, a computing device, or other processing device linked to a wireless modem. Currently, some examples of terminal devices are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

In this application, the terms "network" and "system" may be used interchangeably, but those skilled in the art can understand their meanings. In addition, some English abbreviations in this article are used to describe the embodiments of the present application using the LTE system as an example. They may change with the evolution of the network. For specific evolution, please refer to the descriptions in the corresponding standards.

Next, please refer to FIG. 2 , which is a schematic flowchart of a paging message transmission method in an embodiment of the present application. The method is implemented through interaction between a network device and a terminal device, where the network device may be a base station in a cellular network or a wireless access point in WIFI.

201: The network device configures frequency domain resources for transmitting paging messages;

202: The network device sends paging indication information to the terminal device, where the paging indication information is used to indicate the frequency domain resource for transmitting the paging message.

203: The terminal device receives the paging indication information and obtains the paging message according to the paging indication information.

201 will be described in more detail below.

The frequency domain resource used to transmit the paging message may be a partial bandwidth (BWP). Normally, one BWP corresponds to one terminal device, and the terminal device will be assigned the default BWP bandwidth or subband during initial access. In different implementations, the BWP may be composed of a set of continuous physical resource blocks (Physical Resource Blocks, PRBs), or the BWP may be a subband in a single wideband carrier, or the BWP may also be a carrier. The bandwidth of a CC in carrier aggregation (CA).

Next, 202 will be explained in more detail.

In one embodiment, the paging indication information may be a paging reference identifier. It can be understood that whether it is the paging indication information or the paging reference identifier, its function is to indicate the existence of the paging message or the location of the paging message. The above naming is only an exemplary description and is not used for the information. limited. In the following, the paging reference identifier will be used as an example for explanation.

In different implementations, the network device may carry the paging reference identifier in different signaling for transmission. The following will exemplify the different signaling:

(1) The network device carries the paging reference identifier in a synchronization signal block (SSB) and sends it. Specifically, the paging reference identifier is carried in the physical broadcast channel (physical broadcast channel, PBCH) of the SSB. In a possible implementation, the paging reference identifier carried in the PBCH is used to indicate whether there is an associated paging message. When the terminal device searches for an SSB, it can determine the searched SSB based on the paging reference identifier. Whether there is an associated paging message. In another possible implementation, the paging indication information carried on the PBCH is used to indicate the location of the associated paging message. When the terminal searches for the SSB, it can receive the paging message at the corresponding location according to the paging indication information therein. Call message. ;or,

(2) The above paging reference identifier may also be a camp on available identifier bit in the PBCH, that is, the network device reuses the camp on available identifier bit in the PBCH to indicate the paging message associated with the SSB. Therefore, when the terminal device receives the SSB, it indicates whether there is a paging message associated with the SSB according to the camp on available flag bit of the PBCH; or,

(3) The above-mentioned paging reference identifier can also be carried and sent in remaining system information (remaining system information, RMSI). Therefore, the terminal device can determine whether there is an associated paging message in the searched RMSI based on the paging reference identifier in the searched RMSI; or,

(4) If the RMSI and the paging message are corresponding, that is, when an SSB has an associated RMSI, it means that the SSB is also associated with the paging message. When an SSB does not have an associated RMSI, it means that the SSB has no associated paging message. At this time, the paging reference flag may be the RMSI presence flag in the PBCH, that is, the network device reuses the RMSI presence flag in the PBCH to indicate whether there is a paging message associated with the SSB. Among them, the RMSI presence indicator is used to indicate whether the SSB has an associated RMSI. Therefore, the terminal device can determine whether the searched SSB has an associated paging message according to the RMSI presence identifier of the PBCH in the searched SSB.

For example, the above-mentioned paging reference identifiers may use "0" and "1" to identify whether there is an associated paging message. The network device can use "0" to indicate that there is an associated paging message, and "1" to indicate that there is no associated paging message; or, the network device can use "1" to indicate that there is an associated paging message, and "1" to indicate that there is no associated paging message. 0" to indicate that there is no associated paging message.

In one embodiment, the network device will send the paging message on the default BWP, that is, when the terminal device determines that a paging message exists according to the paging reference identifier, it can search for or receive the paging message on the default BWP. The default BWP may be a BWP carrying SSB, or the default BWP may be a BWP carrying RMSI.

In another embodiment, the network device indicates the BWP carrying the paging message. That is, when the terminal device determines that a paging message exists according to the paging reference identifier, it can search for or receive the paging message on the indicated BWP. For example, the BWP that carries the paging message may be a BWP that carries a physical downlink shared channel (PDSCH) that carries the paging message, or may be a physical downlink control channel that carries the scheduling of the paging message. channel, PDCCH), or may also be the BWP of the CORSET of the PDSCH that simultaneously carries the paging message and the PDCCH that schedules the paging message. The network device may indicate the BWP through the paging reference identifier, or the network device may send information indicating the location to the terminal device so that the terminal device can search for paging messages on the indicated BWP. The specific instruction method will be described below.

In one embodiment, the network device can send multiple SSBs and multiple RMSIs within the system bandwidth, and is configured to send paging messages on one BWP. Please refer to Figure 3. The network device is configured with three SSBs (SSB1, SSB2, and SSB3). The bandwidth occupied by each SSB is the minimum system bandwidth supported by the terminal device. Each SSB has an associated RMSI (associated RMSI). The network device sends SSB1 and its associated RMSI1 on BWP1, SSB2 and its associated RMSI2 on BWP2, and SSB3 and its associated RMSI3 on BWP3, and configures only Paging messages are transmitted on BWP2. When the terminal searches for SSB1, it obtains the BWP1 carrying the RMSI1 associated with SSB1 based on the RMSI indication information indicated in SSB1, finds RMSI1 and finds the BWP2 carrying the paging message based on the paging indication information indicated by RMSI1, so that it can perform the paging message on the BWP2 Read paging messages. Similarly, the terminal device can find the BWP2 carrying the paging message according to the corresponding RMSI of SSB2 and SSB3.

The network device also sends paging to the terminal device at the same time, and the terminal device can obtain the BWP used to transmit the paging message according to the frequency offset information. Specifically, SSB and RMSI respectively contain frequency offset information. The frequency offset information in SSB is used to indicate the offset of the BWP carrying RMSI relative to the BWP where the SSB is located. The frequency offset information in RMSI is used to indicate the offset of the BWP carrying RMSI. The offset of the BWP of paging information relative to the BWP carrying RMSI. Therefore, when an SSB is searched for, the terminal device can find the BWP that carries the RMSI corresponding to the SSB based on the frequency offset information indicated in the searched SSB, and then use the BWP for sending paging relative to the BWP of the RMSI indicated in the RMSI. The frequency offset information is used to find the BWP carrying the paging message (paging), so that the paging message can be read on the BWP. This frequency offset information will be exemplarily described below.

It can be understood that in different implementations, the central frequency point of the BWP used by the user to send the paging message and the BWP carrying the RMSI may be the same or different.

In another embodiment, only one RMSI is configured within the system bandwidth of the network device, and the paging message is sent on one BWP. When the network device configures multiple synchronization signal blocks and configures one RMSI, the paging indication information is carried in the one RMSI and sent; wherein, each synchronization signal block includes RMSI indication information, and the RMSI indication information Used to indicate the location of the one RMSI to the terminal device. Please refer to Figure 4. The network device is configured with three SSBs (SSB1, SSB2, and SSB3). The bandwidth occupied by each SSB is the minimum system bandwidth supported by the terminal device. Among them, this one RMSI is associated with SSB2. The network device can be configured to transmit RMSI on any BWP. In this embodiment, the network device transmits RMSI on BWP2. It can be understood that in other embodiments, the network device can also be configured to transmit RMSI on BWP1 or BWP3. , in other implementations, the network device can also transmit RMSI on other BWPs, which is not limited in this application. In addition, although in Figure 4, the center frequency point of the BWP used to send paging information can be the same as the center frequency point of the BWP carrying RMSI, it can be understood that the center frequency point of the BWP used to send paging information can be The center frequency point of the BWP that carries RMSI can also be different.

The PBCH of each SSB carries RMSI indication information indicating the RMSI position of the one to indicate the RMSI. When the terminal searches for the SSB, it obtains the BWP carrying the associated RMSI according to the RMSI indication information indicated in the SSB, and then obtains the BWP carrying the paging message according to the paging message indication information indicated in the RMSI. Optionally, when the PBCH in the SSB carries paging information indication information, the terminal can obtain the BWP carrying the paging message according to the paging information indication information.

By indicating the frequency information of RMSI in the SSB, when the terminal searches for an SSB, it can find the RMSI based on the RMSI indication information of the RMSI indicated by the SSB, without the need to re-search for the SSB and perform SSB synchronization operations, thus reducing complexity. Spend.

In yet another embodiment, when the network device configures multiple synchronization signal blocks and configures one RMSI, only one of the SSBs has an associated RMSI (hereinafter referred to as: the first SSB). The paging indication information is carried and sent in the one RMSI; wherein the plurality of synchronization signal blocks include a first synchronization signal block associated with the first RMSI, and the first synchronization signal block includes the RMSI indication. Information, the RMSI indication information is used to indicate the location of the RMSI to the terminal device; the plurality of synchronization signal blocks except the first synchronization signal block are second synchronization signal blocks, and among the second synchronization signal blocks The first synchronization signal block indication information is included, and the first synchronization signal block indication information is used to indicate the relative position of the first synchronization signal block and the second synchronization signal block. When the network device is configured with multiple SSBs, the second SSBs other than the first SSB need to carry the first synchronization signal block indication information. The first synchronization signal block indication information is used to indicate the frequency offset from the first SSB. So that other SSBs can obtain the location of the first SSB. Taking SSB1, SSB2 and SSB3 in Figure 4 as an example, assuming that SSB2 is the first SSB, that is, SSB2 has an associated RMSI, then SSB1 and SSB3 respectively carry the SSB indication information of SSB2. Therefore, when the terminal device searches for SSB1, it can obtain SSB2 based on the SSB indication information carried therein, and further obtain the location of the paging message based on the RMSI associated with SSB2, thereby searching or receiving the paging message at the corresponding location. The terminal device also operates similarly when receiving SSB3.

By indicating the location offset of the SSB with RMSI indication information in the SSB without RMSI indication information, when the UE searches for an SSB, it can find the location of the SSB carrying the RMSI indication information based on the location offset information in the SSB. BWP, and then find the location of the BWP used to send paging messages, saving the number of blind SSB checks by the terminal equipment, and reducing the complexity of the terminal equipment.

It should be understood that this embodiment is not limited to the same scenario where the BWP carrying RMSI and the BWP carrying the default SSB are the same. That is, when the BWP carrying RMSI is different from the BWP carrying SSB, a certain SSB can still be configured by the network device as The default SSB is implemented in the manner of this embodiment.

In yet another embodiment, the network device is configured to send paging messages on multiple BWPs, and the paging messages sent on multiple configured BWPs are not repeated. The terminal obtains its scheduled BWP for sending paging information according to the paging configuration information in the RMSI, where the paging configuration information includes: the number of activated BWPs for sending paging messages in this carrier. N _n , the BWP number (paging channel index, PCHI) used to send paging messages and/or paging indication information.

Specifically, the PCHI used to send paging messages conforms to the following formula:

in N = min (T, nB), nB and T are discontinuous reception (DRX) parameters. Specifically, T is the DRX cycle (cycle). The UE in the standby (idle) state is awakened every T to listen to the search query. Paging message, nB represents how many paging opportunities (Paging Occasions, PO) there are in each DRX cycle, and one PO represents the sending of a paging message. UE_ID can be the value obtained by taking the remainder of a fixed value from any one of the following identifiers: international mobile subscriber identity (IMSI), international mobile equipment identity (IMEI), Temporary mobile subscriber identity (TMSI), radio network temporary identifier (RNTI), international mobile subscriber identity (IMSI), international mobile equipment identity (IMEI), temporary Mobile subscriber identity (temporary mobile subscriber identity, TMSI), wireless network temporary identifier (radio network temporary identifier, RNTI). The system sends paging messages on the corresponding BWP according to the grouped terminals.

For example, the terminal device calculates the number of the BWP that is scheduled to send the paging message based on the paging message configuration information and UE_ID in the RMSI, thereby obtaining the frequency location of the BWP used to carry the paging message. Taking terminal equipment 1 with UE_ID=722 and terminal equipment 2 with UE_ID=739 as an example, T=32, nB=T/2=16, N=min(T,nB)=16, Ns=max(1,nB /T)=1, obtain PCHI=FLOOR(722/16) MOD 3=0 of terminal device 1, terminal device 2 searches or receives paging messages on the BWP corresponding to PCHI, and obtains PCHI=FLOOR(739) of terminal device 2 /16) MOD 3=1, terminal device 2 searches for or receives paging messages on the BWP corresponding to the PCHI.

The network equipment configures multiple BWPs in a broadband carrier to send paging messages. The network equipment groups users. Different user groups correspond to different BWPs. Paging messages are not repeated on these BWPs, thereby saving paging resources. .

The above solution can be applied to both licensed frequency bands and unlicensed frequency bands, which is not limited in this application. However, since there are competition mechanisms for multiple different communication systems in the application scenario of unlicensed frequency bands, the unlicensed frequency bands will be further described below.

In the unlicensed frequency band, in order to ensure fairness, network equipment or terminal equipment needs to perform a listen before talk (LBT) operation before sending data.

In the application scenario of the unlicensed frequency band, the paging message is carried in a paging frame (paging frame, PF) as an example. The paging frame may also be called a paging message frame. The RMSI may also carry one or more of the following paging frame parameters: the first time offset value, the second time interval, and the length of the paging frame (paging of window, POW). The first time offset value is the offset value of the paging frame relative to the starting time of the radio frame (RF). The first time offset value can be in symbols or slots. Or in units of mini slots. The value of the first time offset value may be zero, which means that the corresponding paging frame is aligned with the starting time of the radio frame. For example, when the network device is configured to send paging messages on multiple BWPs, each BWP has different first time offset values P0, P1, and P2. The second time interval is the longest time interval for continuously listening to paging messages if no paging message is heard on the corresponding BWP. The second time interval may be in units of symbols, slots or mini slots.

When the network device configures RMSI for each SSB, each RMSI carries the paging frame parameters transmitted on the BWP where the corresponding SSB is located. When the network device configures only one RMSI for multiple SSBs, the one RMSI carries the paging frame parameters transmitted on the BWPs where the corresponding multiple SSBs are respectively located, that is, it carries multiple paging frame parameters.

Below, please refer to Figure 6, taking one RMSI corresponding to multiple SSBs as an example for explanation. The network device is configured with three SSBs, namely SSB1, SSB2 and SSB3. The bandwidth occupied by each SSB is the minimum bandwidth supported by the terminal device. The three SSBs are respectively transmitted on multiple BWPs (BWP1, BWP2, and BWP3), which also transmit paging messages. At this time, the RMSI carries the paging frame parameters transmitted on BWP1, BWP2 and BWP3 respectively. POW1 indicates the paging frame length of paging fram1, and paging fram2 and 3 are similar.

As shown in the figure, the first time offset value of paging frame 1 is P0, that is, the offset value relative to the starting time of the wireless frame is P0; the first time offset value of paging frame 2 is P1, that is, relative to the wireless frame The offset value of the starting time of paging frame 3 is P1; the first time offset value of paging frame 3 is P2, that is, the offset value relative to the starting time of the wireless frame is P2. Among them, P0<P1<P2.

According to the received RMSI, the terminal device listens to the paging message on BWP1. If the paging message is not heard within the second time interval (for example: the difference between P1 and P2), it jumps to BWP2. Listen for paging messages; if a paging message is heard in the second time interval, but your own paging message is not found among the paging messages heard, that is, the paging message list does not include the terminal device's paging message. UE_ID, then continue listening until the end of POW1; if the paging message is heard in the second time interval and its own paging message is found, the paging message is received.

By configuring paging message frames that are sent on multiple BWPs and have different offset lengths relative to the radio frame, you can avoid the possibility that some BWPs that have not successfully listened may not be able to send paging messages due to the uncertainty of the LBT result. Terminal equipment resident on this BWP cannot receive paging messages. Therefore, the probability of the terminal device hearing the paging message in the unlicensed frequency band can be increased, thereby improving communication efficiency.

Illustratively, the paging indication information, RMSI indication information and SSB indication information in the above embodiments may include or be indicated in the form of frequency offset. The possible cases of frequency offset are exemplarily described below. The frequency offset information is used to indicate the frequency location information of the BWP.

When both the network device and the terminal have a default bandwidth, the above frequency offset information may be: (1) The predetermined frequency point of the BWP where the paging information is located is relative to the starting frequency point of the BWP carrying SSB or the starting frequency point of the BWP carrying RMSI The offset of the start frequency point; or (2) the offset of the predetermined frequency point of the BWP carrying paging information relative to the end frequency point of the BWP carrying SSB or the end frequency point of the BWP where the RMSI is located; or (3) The offset of the predetermined frequency point of the BWP carrying paging information relative to the center frequency point of the BWP carrying SSB or the center frequency point of the BWP carrying RMSI. The predetermined frequency point of the BWP carrying paging information may be a starting frequency point, an ending frequency point or a center frequency point.

When there is no default bandwidth for network equipment and terminals, the above frequency offset information can be: (1) The starting frequency point and the ending frequency point of the BWP carrying paging information relative to the starting frequency point of the BWP carrying SSB or the RMSI The offset of the start frequency point of the BWP; or (2) the start frequency point and the end frequency point of the BWP carrying paging information relative to the end frequency point of the BWP carrying SSB or the end frequency point of the BWP carrying RMSI Offset; or (3) The offset of the start frequency point and the end frequency point of the BWP carrying paging information relative to the center frequency point of the BWP carrying SSB or the center point of the BWP carrying RMSI.

If there is no default bandwidth agreement in the frequency offset information, the frequency offset information may also be the start frequency point or end frequency point or center frequency point of the indicated BWP relative to the BWP or bearer that carries the SSB. The offset and bandwidth size of the starting frequency point of the RMSI BWP;

Optionally, the frequency offset information may be the offset and bandwidth size of the start frequency point, end frequency point, or center frequency point of the indicated BWP relative to the end frequency point of the BWP carrying SSB or the BWP carrying RMSI;

Further optionally, the frequency offset information may be the offset and bandwidth size of the indicated start frequency point, end frequency point or center frequency point of the BWP relative to the center frequency point of the BWP carrying SSB or the BWP carrying RMSI. ;

The units of the above frequency points and bandwidth can be in Hz, KHz, or MHz, etc. The indication granularity of the offset may be carrier spacing, RB, or RB group (RB group, for example, 10 RBs).

The implementation of the configuration paging message transmission method of the present application has been described in detail above. The implementation of the network equipment and terminal equipment of the present application will continue to be described below.

The implementation of the network device will be described first. In a specific example, the structure of the network device includes a processor (or controller) and a transceiver. In a possible example, the structure of the network device may also include a communication unit. The communication unit is used to support communication with other network side devices, such as communication with core network nodes. In a possible example, the structure of the network device may further include a memory, which is coupled to the processor and used to store necessary program instructions and data for the network device.

Please refer to FIG. 7 , which shows a possible simplified structural diagram of the network device involved in the above embodiment. In the example corresponding to Figure 7, the structure of the network device involved in this application includes a transceiver 601, a processor 602, a memory 603 and a communication unit 604. The transceiver 601, the processor 602, the memory 603 and the communication unit 604 pass bus connection.

On the downlink, the data or signaling (including the above-mentioned downlink control information) to be sent is adjusted by the transceiver 601 to output samples and generate a downlink signal. The downlink signal is transmitted via the antenna to the device described in the above embodiment. Terminal Equipment. On the uplink, the antenna receives the uplink signal (including the above-mentioned random access preamble) transmitted by the terminal device in the above embodiment, and the transceiver 602 adjusts the signal received from the antenna and provides input samples. In the processor 602, the service data and signaling messages are processed, such as modulating the data to be sent, generating SC-FDMA symbols, etc. These units perform processing according to the radio access technology adopted by the radio access network (eg, access technologies of LTE, 5G and other evolved systems). In the embodiment shown in Figure 7, transceiver 602 is integrated with a transmitter and receiver. In other embodiments, the transmitter and receiver may be independent of each other.

The processor 602 is also used to control and manage the actions of the network device, and to perform the processing performed by the network device in the above embodiments, for example, to control the network device to process SSB and RMSI and/or perform the processing described in this application. Other procedures for the described technology. As an example, the processor 602 is used to support the network device to perform the processing processes related to the network device in FIGS. 2 to 6 . When applied in an unauthorized scenario, the processor 602 performs channel listening and competes for the channel occupancy time. For example, the processor 602 performs channel sensing based on the signal received by the transceiver 602 from the antenna, and controls the transceiver to send a signal from the antenna to occupy the channel. In different implementations, the processor 602 may include one or more processors, such as one or more central processing units (Central Processing Units, CPUs). The processor 602 may be integrated into a chip, or may be the chip itself. .

The memory 603 is used to store relevant instructions and data, as well as program codes and data of the network device. In different implementations, the memory 603 includes but is not limited to Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory, EPROM), or portable read-only memory (Compact Disc Read-Only Memory, CD-ROM).

It can be understood that FIG. 7 only shows a simplified design of the network device. In practical applications, the network device may include any number of transmitters, receivers, processors, memories, etc., and all network devices that can implement the present application are within the protection scope of the present application.

Next, the implementation of the terminal device is described. In a specific example, the structure of the terminal device includes a processor (or controller), a transceiver, and a modem processor. In a possible example, the structure of the network device may further include a memory, which is coupled to the processor and used to store necessary program instructions and data for the network device.

FIG. 8 shows a simplified schematic diagram of a possible design structure of the terminal device involved in the above embodiment. The terminal device includes a transceiver 701, a processor 702, a memory 703 and a modem processor 704. The transceiver 701, the processor 702, the memory 703 and the modem processor 704 are connected through a bus.

Transceiver 701 conditions (eg, analog conversion, filtering, amplification, frequency upconversion, etc.) output samples and generates an uplink signal, which is transmitted via an antenna to the network device described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. Transceiver 70 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signal received from the antenna and provides input samples. Exemplarily, in the modem processor 704, the encoder 7041 receives traffic data and signaling messages to be sent on the uplink, and processes the traffic data and signaling messages (e.g., formats, codes, and intertwined). Modulator 7042 further processes (eg, symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. Demodulator 7043 processes (eg, demodulates) the input samples and provides symbol estimates. Decoder 7044 processes (eg, deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages to the terminal device. The encoder 7041, modulator 7042, demodulator 7043 and decoder 7044 may be implemented by the synthesized modem processor 704. These units perform processing according to the radio access technology adopted by the radio access network (eg, access technologies of LTE, 5G and other evolved systems). In the embodiment shown in Figure 8, the transceiver 701 is integrated with a transmitter and a receiver. In other embodiments, the transmitter and receiver may be independent of each other.

The processor 702 controls and manages the actions of the terminal device, and is used to perform the processing performed by the terminal device in the above embodiment. For example, it is used to control the terminal device to perform processing according to the received paging indication information and/or other processes of the technology described in the present invention. As an example, the processor 702 is used to support the terminal device to perform the processing procedures related to the terminal device in FIGS. 2 to 6 . For example, the transceiver 701 is configured to receive downlink control information sent by a network device through an antenna, and the processor 702 is configured to control the transceiver to send or not send a random access preamble through the antenna according to the downlink control information. In different implementations, the processor 702 may include one or more processors, such as one or more CPUs, the processor 702 may be integrated into a chip, or may be the chip itself.

The memory 703 is used to store relevant instructions and data, as well as program codes and data of the terminal device. In different implementations, the memory 703 includes, but is not limited to, random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), or portable read-only memory (Compact Disc Read-Only Memory, CD-ROM).

It can be understood that FIG. 8 only shows a simplified design of the terminal device. In practical applications, the terminal device may include any number of transmitters, receivers, processors, memories, etc., and all terminal devices that can implement the present application are within the protection scope of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may 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 processes or functions described in accordance with the embodiments of the present invention 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. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

Those skilled in the art should realize that in one or more of the above examples, the functions described in this application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media can be any available media that can be accessed by a general purpose or special purpose computer.

Claims (32)

1. A method of transmitting a paging message, performed by a network device or a chip for a network device, comprising:

configuring frequency domain resources for transmitting paging messages;

and sending a plurality of synchronization signal blocks and one piece of residual system information (RMSI) to the terminal equipment, wherein the RMSI carries paging indication information, the paging indication information is used for indicating the frequency domain resource for transmitting the paging information, the plurality of synchronization signal blocks comprise a first synchronization signal block and a second synchronization signal block, the first synchronization signal block comprises RMSI indication information, the RMSI indication information indicates the position of one RMSI, the second synchronization signal block comprises first synchronization signal block indication information, and the first synchronization signal block indication information indicates the frequency offset of the first synchronization signal block and the second synchronization signal block.

2. The method according to claim 1, characterized in that at least one remaining system information RMSI is transmitted to the terminal device, the paging indication information being transmitted bearer on the at least one RMSI.

3. A method according to claim 1 or 2, characterized by transmitting at least one synchronization signal block to the terminal device, the paging indication information being transmitted on the at least one synchronization signal block.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

transmitting a plurality of synchronization signal blocks and one RMSI to the terminal device, where the paging indication information bearer is transmitted in the one RMSI; each synchronization signal block comprises RMSI indication information, and the RMSI indication information indicates the position of one RMSI.

5. The method of claim 1, wherein the first synchronization signal block indication information indicates an offset of a starting frequency point of a physical resource block carrying the second synchronization signal block relative to a starting frequency point of a physical resource block carrying the first synchronization signal block.

6. The method of claim 5, wherein the indication granularity of the offset is a resource block RB.

7. The method of claim 1, wherein the paging message bearer is sent on a paging frame when the network device is applied to an unlicensed band, and wherein one or more of the following parameters are further included in the RMSI:

a first time offset value for indicating an offset value of the paging frame relative to a start time of a radio frame transmitted by the network device;

a second time interval for indicating a longest time interval for continuously listening to a paging message when the terminal device does not listen to the paging message on the partial bandwidth BWP indicated by the paging indication information;

the length of the paging frame.

8. A network device, comprising:

a processor for configuring frequency domain resources for transmitting paging messages;

and the transceiver is used for sending a plurality of synchronous signal blocks and an RMSI to the terminal equipment, the RMSI carries paging indication information, the paging indication information is used for indicating the frequency domain resource for transmitting the paging message, the plurality of synchronous signal blocks comprise a first synchronous signal block and a second synchronous signal block, the first synchronous signal block comprises RMSI indication information, the RMSI indication information indicates the position of one RMSI, the second synchronous signal block comprises first synchronous signal block indication information, and the first synchronous signal block indication information indicates the frequency offset of the first synchronous signal block and the second synchronous signal block.

9. The network device of claim 8, wherein the transceiver is further configured to transmit at least one remaining system information RMSI to the terminal device, the paging indication information being transmitted on the at least one RMSI.

10. The network device according to claim 8 or 9, wherein the transceiver is further configured to transmit at least one synchronization signal block to the terminal device, the paging indication information being transmitted on the at least one synchronization signal block.

11. The network device according to claim 8 or 9, wherein the transceiver is configured to send a plurality of synchronization signal blocks and one RMSI to the terminal device, the paging indication information being sent in the one RMSI; each synchronization signal block comprises RMSI indication information, and the RMSI indication information indicates the position of one RMSI.

12. The network device of claim 8, wherein the first synchronization signal block indication information indicates an offset of a starting frequency point of a physical resource block carrying the second synchronization signal block relative to a starting frequency point of a physical resource block carrying the first synchronization signal block.

13. The network device of claim 12, wherein the indication granularity of the offset is a resource block RB.

14. The network device of claim 8, wherein the paging message bearer is sent on a paging frame when the network device is applied to an unlicensed band, the RMSI further including one or more of the following parameters:

a first time offset value for indicating an offset value of the paging frame relative to a start time of a radio frame transmitted by the network device;

a second time interval for indicating a longest time interval for continuously listening to the paging message when the terminal device does not listen to the paging message on the partial bandwidth BWP indicated by the paging indication information;

the length of the paging frame.

15. A method of transmitting a paging message, performed by a terminal device or a chip for a terminal device, comprising:

receiving at least one synchronization signal block from a network device, wherein the at least one synchronization signal block comprises a first synchronization signal block and a second synchronization signal block, the first synchronization signal block carries RMSI indication information, the RMSI indication information carries a position of one RMSI, the one RMSI carries paging indication information, the second synchronization signal block comprises a first synchronization signal block indication information, and the first synchronization signal block indication information indicates frequency offset of the first synchronization signal block and the second synchronization signal block;

Receiving the paging indication information from the network device;

and determining frequency domain resources for transmitting paging messages according to the paging indication information, and receiving the paging messages on the frequency domain resources indicated by the paging indication information.

16. The method of claim 15, wherein at least one remaining system information RMSI is received from the network device, the paging indication information being transmitted over the at least one RMSI.

17. The method according to claim 15 or 16, characterized by receiving one synchronization signal block from the network device, the paging indication information being carried on the one synchronization signal block.

18. The method according to claim 15 or 16, wherein at least one synchronization signal block is received from the network device, the paging indication information being carried in one RMSI, the location of the one RMSI being carried in RMSI indication information, the RMSI indication information being carried in each of the at least one synchronization signal block.

19. The method of claim 15, wherein the first synchronization signal block indication information indicates an offset of a starting frequency point of a physical resource block carrying the second synchronization signal block relative to a starting frequency point of a physical resource block carrying the first synchronization signal block.

20. The method of claim 19, wherein the indication granularity of the offset is a resource block, RB.

21. The method of claim 15, wherein the location of a paging frame is determined from the paging indication information when the terminal device is applied to an unlicensed frequency band, the paging indication information including one or more of the following parameters:

a first time offset value for indicating an offset value of the paging frame relative to a start time of a radio frame transmitted by the network device;

a second time interval for indicating a longest time interval for continuously listening to a paging message when the terminal device does not listen to the paging message on the partial bandwidth BWP indicated by the paging indication information;

the length of the paging frame.

22. The method of claim 21 wherein the paging message is sent over a plurality of BWP and wherein the paging message is received from the BWP with the smallest first time offset value based on the first time offset value.

23. The method of claim 22 wherein no paging message is received within the second time interval and the next BWP is skipped, wherein the next BWP is the BWP with the smallest first time offset value within the remaining BWP.

24. A terminal device, comprising:

a transceiver, configured to receive at least one synchronization signal block from a network device, where the at least one synchronization signal block includes a first synchronization signal block and a second synchronization signal block, where the first synchronization signal block carries RMSI indication information, where the RMSI indication information carries a position of one RMSI, where the one RMSI carries paging indication information, and where the second synchronization signal block includes first synchronization signal block indication information, where the first synchronization signal block indication information indicates a frequency offset between the first synchronization signal block and the second synchronization signal block;

a transceiver for receiving the paging indication information from the network device;

and the processor determines frequency domain resources for transmitting the paging message according to the paging indication information and receives the paging message on the frequency domain resources indicated by the paging indication information.

25. The device of claim 24, wherein the transceiver further receives at least one synchronization signal block from the network device, the paging indication information is carried in one RMSI, the location of the one RMSI is carried in RMSI indication information, and the RMSI indication information is carried in each of the at least one synchronization signal block.

26. The apparatus of claim 24, wherein the first synchronization signal block indication information indicates an offset of a starting frequency point of a physical resource block carrying the second synchronization signal block relative to a starting frequency point of a physical resource block carrying the first synchronization signal block.

27. The apparatus of claim 26, wherein the indication granularity of the offset is a resource block RB.

28. The device of claim 24, wherein the processor determines a location of a paging frame based on the paging indication information when the terminal device is applied to an unlicensed frequency band, the paging indication information including one or more of the following parameters:

a first time offset value for indicating an offset value of the paging frame relative to a start time of a radio frame transmitted by the network device;

a second time interval for indicating a longest time interval for continuously listening to a paging message when the terminal device does not listen to the paging message on the BWP indicated by the paging indication information;

the length of the paging frame.

29. The device of claim 28, wherein the paging message is transmitted over a plurality of BWP, and wherein the transceiver starts receiving the paging message from the BWP with the smallest first time offset value according to the first time offset value.

30. The apparatus of claim 29, wherein the terminal device does not receive the paging message within the second time interval, and wherein the terminal device jumps to a next BWP, wherein the next BWP is the BWP with the smallest first time offset value within the remaining BWPs.

31. A computer readable storage medium comprising instructions which, when executed by a processor, are executed according to the method of any one of claims 1 to 7 and 15 to 23.

32. A communication device comprising means for performing the method of any one of claims 1 to 7 or claims 15 to 23.