WO2018141267A1 - Method, device and system for triggering cache status report - Google Patents

Abstract

The present application relates to the technical field of communications, and disclosed in the embodiments thereof are a method, device and system for triggering a cache status report, which may meet the scheduling requirements of data transmitted in different logical channels. The method comprises: a terminal device receives first indication information sent by an access network device, the first indication information being used for indicating a first logical channel using a first triggering condition, the first triggering condition being a triggering condition for individually triggering a buffer state report (BSR) corresponding to the first logical channel; and the terminal device individually triggers a first BSR when determining that the first triggering condition is met, the first BSR being a BSR corresponding to the first logical channel.

Description

Method, device and system for triggering buffer status report

This application claims the priority of the Chinese Patent Application filed on February 4, 2017, the National Patent Office, Application No. 201710064549.0, entitled "A Method, Device, and System for Cache Status Reporting", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for triggering a buffer state report (BSR).

Background technique

In a long term evolution (LTE) system, when a user equipment (UE) needs to send uplink data, the UE sends a buffer status report (BSR) to the base station to inform the base station of the UE. The uplink data needs to be sent, so that the base station can schedule uplink grant resources for the uplink data according to the data volume of the uplink data indicated by the BSR and a preset scheduling algorithm.

Before transmitting the BSR to the base station, the UE first needs to trigger the BSR, that is, the UE is allowed to generate and send the BSR. Currently, several fixed trigger conditions of a BSR corresponding to a logical channel set formed by all logical channels of the UE are defined. When the trigger condition is met, the UE can trigger the BSR. The triggering condition of the BSR generally includes the following five conditions: (1) When the uplink buffer of the UE is empty, the BSR can be triggered once new data is added to the uplink buffer. (2) In the case that the uplink buffer is not empty, when a higher priority data arrives in the uplink buffer, the BSR can be triggered. (3) When the retransmission timer expires and data in the uplink buffer area needs to be sent, the BSR can be triggered. (4) When the period timer expires, the BSR can be triggered. (5) When the UE has enough remaining resources to send the BSR after transmitting the data, the BSR can be triggered.

At present, the BSRs are all sent based on the logical channel set. When any logical channel has data to be sent, the BSR of the logical channel set where the logical channel is located can be triggered as long as any one of the above five trigger conditions is met. When there are enough resources to send the BSR, the UE can generate a BSR and send it to the base station, so that the base station allocates uplink grant resources to the UE.

However, the data transmitted on different logical channels may have different scheduling requirements. The above triggering conditions may cause the UE and the base station to fail to meet different scheduling requirements. For example, new radio (NR) data in a 5G network is demanding on delay, and the base station needs to quickly schedule uplink grant resources. The above trigger conditions may cause the UE to fail to trigger the BSR for a long time. For example, for the trigger condition (2), when the uplink buffer of the UE is not empty, the data reaching the uplink buffer is always prioritized compared with the priority of the service data that has been buffered in the uplink buffer. Business data with the same level or lower priority, rather than higher priority service data, arrives in the upstream buffer. Then, the UE cannot trigger the BSR until the retransmission timer expires or the period timer expires before the BSR can be triggered. As a result, the UE cannot generate and send the BSR in time because the UE cannot send the BSR in time. Then, for a logical channel that transmits data with low delay scheduling requirements, the UE may fail to timely trigger the BSR, and the base station cannot meet the low delay scheduling requirement of the data transmitted on the logical channel.

Summary of the invention

The present application provides a method, a device and a system for triggering a BSR, which can meet the scheduling requirements of data transmitted on different logical channels.

In a first aspect, the present application provides a method for triggering a BSR, where the method includes: receiving, by a terminal device, first indication information that is sent by an access network device, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition. The first trigger condition is a trigger condition for separately triggering a BSR corresponding to the first logical channel; the terminal device separately triggers the first BSR when determining that the first trigger condition is satisfied, where the first BSR corresponds to the first A BSR of a logical channel.

With the triggering method of the BSR provided by the application, the terminal device sends the first indication information by using the access network device to determine the first logical channel that adopts the first trigger condition. Since the first trigger condition is a trigger condition for separately triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger when determining that the first trigger condition is satisfied, if there is sufficient uplink grant resource. The first BSR (ie, the BSR corresponding to the first logical channel) is not limited to a fixed trigger condition corresponding to the logical channel set, so that the terminal device can generate and send the first BSR to the access network device in time, Thereby meeting the scheduling requirements of the data transmitted on the first logical channel.

In a possible design, the method further includes: the terminal device triggering the second BSR when determining that the second trigger condition is met, wherein the second trigger condition is a trigger condition for triggering the second BSR, the second BSR a BSR corresponding to the logical channel set of the first logical channel; the terminal device generates the second BSR according to the data volume of the data to be sent in the buffer corresponding to the logical channel set; the terminal device sends the second BSR to the access network device Send the second BSR.

In a possible design, the second BSR includes a third BSR and a fourth BSR, and the terminal device generates a second BSR according to the data volume of the data to be sent in the buffer corresponding to the logical channel set, including: the terminal The device separately generates a third BSR for the first logical channel according to the first data volume, where the first data volume is the data volume of the data to be sent in the first buffer area; and the terminal device is configured according to the second buffer area. Generating, by the amount of data of the data to be sent, a fourth BSR, where the second buffer is a buffer corresponding to another logical channel except the first logical channel; the terminal device sends the access to the access network device The second BSR includes: the terminal device sends the third BSR and the fourth BSR to the access network device.

In a possible design, the data volume of the data to be sent in the buffer area corresponding to the logical channel set is the data quantity of the data to be sent in the second buffer area, and the second buffer area is in the logical channel set. a buffer area corresponding to other logical channels outside the first logical channel.

In this possible design, the terminal device does not need to report the data volume of the data to be sent in the first buffer area to the access network device through the second BSR, and avoids the data volume of the data to be sent in the first buffer area. It is repeatedly reported, thus avoiding the allocation of redundant uplink authorization resources by the access network device, thereby avoiding waste of resources.

In a possible design, the data amount of the data to be sent in the buffer area corresponding to the logical channel set is the sum of the second data quantity and the data quantity of the data to be sent in the second buffer area, and the second buffer area a buffer area corresponding to the logical channel other than the first logical channel in the logical channel set; wherein the second data quantity reaches the first cache in a time interval between the adjacent first time and the second time The data volume of the area, the first time is before the second time, the first time is the time when the terminal device generates the first BSR, and the second time is the time when the terminal device generates the second BSR.

In this possible design, the terminal device reports the sum of the second data amount and the data amount of the data to be transmitted in the second buffer area to the access network device only through the second BSR. Therefore, the amount of data that has been reported by the first BSR in the first buffer area is repeatedly reported, thereby preventing the access network device from allocating redundant uplink authorization resources. At the same time, it ensures that the access network device can schedule the uplink authorization resources required for the second data volume in time.

In a possible design, the second BSR carries the second indication information, where the second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR.

In this possible design, the data indicated by the first BSR exists in the data indicated by the second BSR by carrying the second indication information in the second BSR. After the access network device receives the second BSR, it is determined that the third data amount is determined, and the uplink authorization resource is allocated for the third data quantity, and the amount of data repeatedly reported for the second BSR and the first BSR is not required to be repeated. Assign upstream authorization resources. Therefore, the data volume of the data to be sent in the first buffer area is repeatedly reported, thereby preventing the access network device from allocating redundant uplink authorization resources, thereby avoiding waste of resources.

In a possible design, the terminal device receives the first indication information sent by the access network device, where the terminal device receives the first message sent by the access network device, where the first message carries the first indication information. .

In a second aspect, the present application provides a method for triggering a BSR, where the method includes: configuring, by the access network device, first indication information, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first The trigger condition is a trigger condition for separately triggering a BSR corresponding to the first logical channel; the access network device sends the first indication information to the terminal device.

With the triggering method of the BSR provided by the application, the access network device, by configuring the first indication information, indicates the first logical channel indicating that the first trigger condition is used. Since the first trigger condition is a trigger condition for separately triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger when determining that the first trigger condition is satisfied, if there is sufficient uplink grant resource. The first BSR is not limited to a fixed trigger condition corresponding to the logical channel set, so that the terminal device can generate and send the first BSR to the access network device in time, thereby satisfying the data transmitted on the first logical channel. Scheduling requirements.

In a possible design, after the access network device sends the first indication information to the terminal device, the method further includes: the access network device receiving the first BSR sent by the terminal device, where the first BSR is corresponding a BSR of the first logical channel, where the access network device schedules a first uplink grant resource according to the first BSR, where the first uplink grant resource is used to send data indicated by the first BSR.

In a possible design, after the access network device receives the first BSR sent by the terminal device, the method further includes: the access network device receiving the second BSR sent by the terminal device, where the second BSR is And carrying the second indication information, where the second BSR is a BSR corresponding to the logical channel set of the first logical channel, where the second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR. The access network device determines, according to the second indication information, a data volume, where the third data volume is a data amount of data other than the data indicated by the first BSR in the data indicated by the second BSR; The network device schedules a second uplink grant resource according to the third data volume, where the second uplink grant resource is used to send the third data volume.

In a possible design, the access network device configures the first indication information, including: the access network device configuring the first indication information in the first message; the access network device sending the first information to the terminal device The indication information includes: the access network device sends the first message to the terminal.

In a third aspect, the application provides a terminal device, including: a receiving unit, configured to receive first indication information that is sent by an access network device, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, The first trigger condition is a trigger condition for separately triggering a BSR corresponding to the first logical channel; the processing unit is configured to separately trigger the first BSR when determining that the first trigger condition is satisfied, where the first BSR corresponds to The BSR of the first logical channel.

In a possible design, the terminal device further includes a sending unit, where the processing unit is further configured to trigger the second BSR when determining that the second trigger condition is met, where the second trigger condition is that the second BSR is triggered. a triggering condition, the second BSR is a BSR corresponding to the logical channel set of the first logical channel; the processing unit is further configured to generate the second data according to the data volume of the data to be sent in the buffer corresponding to the logical channel set The sending unit is configured to send the second BSR to the access network device.

In a possible design, the second BSR includes a third BSR and a fourth BSR. The processing unit generates a second BSR according to the data volume of the data to be sent in the buffer area corresponding to the logical channel set, which includes: Generating a third BSR separately for the first logical channel, and generating a fourth BSR according to the data volume of the data to be sent in the second buffer area, where the first data volume is in the first buffer area The amount of data to be sent, the second buffer area is a buffer area corresponding to the other logical channels except the first logical channel in the logical channel set; the sending unit sends the second BSR to the access network device, Specifically, the method includes: sending the third BSR and the fourth BSR to the access network device.

In a possible design, the data volume of the data to be sent in the buffer area corresponding to the logical channel set is the data quantity of the data to be sent in the second buffer area, and the second buffer area is in the logical channel set. a buffer area corresponding to other logical channels outside the first logical channel.

In a possible design, the data amount of the data to be sent in the buffer area corresponding to the logical channel set is the sum of the second data quantity and the data quantity of the data to be sent in the second buffer area, and the second buffer area a buffer area corresponding to the logical channel other than the first logical channel in the logical channel set; wherein the second data quantity reaches the first cache in a time interval between the adjacent first time and the second time The data volume of the area, the first time is before the second time, the first time is the time when the terminal device generates the first BSR, and the second time is the time when the terminal device generates the second BSR.

In a possible design, the second BSR carries the second indication information, where the second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR.

In a possible design, the receiving unit receives the first indication information sent by the access network device, and specifically includes: receiving the first message sent by the access network device, where the first message carries the first indication information.

For technical effects of the terminal device provided by the present application, refer to the technical effects of the foregoing first aspect or the implementation manner of the first aspect, and details are not described herein again.

In a fourth aspect, an access network device includes: a processing unit, configured to configure first indication information, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is The triggering condition of the BSR corresponding to the first logical channel is separately triggered; the sending unit is configured to send the first indication information configured by the processing unit to the terminal device.

In a possible design, the access network device further includes a receiving unit, where the receiving unit is configured to receive the first BSR sent by the terminal device, where the first BSR is a BSR corresponding to the first logical channel; The processing unit is further configured to schedule, according to the first BSR, a first uplink grant resource, where the first uplink grant resource is used to send data indicated by the first BSR.

In a possible design, the receiving unit is further configured to: after receiving the first BSR sent by the terminal device, receive a second BSR sent by the terminal device, where the second BSR carries the second indication information, where The second BSR is a BSR corresponding to the logical channel set of the first logical channel, where the second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR; Determining, according to the second indication information, a fourth data amount, where the third data amount is a data amount of data other than the data indicated by the first BSR in the data indicated by the second BSR; the processing unit is further configured to The third data volume is used to schedule a second uplink grant resource, where the second uplink grant resource is used to send the third data volume.

In a possible design, the processing unit is configured to configure the first indication information, which includes: configuring the first indication information in the first message; the sending unit sends the first indication information to the terminal device, specifically including the terminal Send the first message.

For technical effects of the access network device provided by the present application, refer to the technical effects of the foregoing second aspect or the implementation manner of the second aspect, and details are not described herein again.

In combination with any of the foregoing first to fourth aspects, in a possible design, the first trigger condition includes at least one of the following trigger conditions: a trigger condition 1 corresponding to the first logical channel When the first buffer area is empty, data to be sent in the first buffer area arrives. The triggering condition 2, the retransmission timer corresponding to the first logical channel is timed out, and the first buffer area has the data to be sent. The triggering condition 3 is that, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold. Trigger condition 4, the speed at which the data to be sent reaches the first buffer area is greater than or equal to a preset second threshold. Trigger condition 5, the period timer corresponding to the first logical channel times out.

With reference to any of the foregoing first to fourth aspects, in a possible design, the second indication information includes one of the following information: (1) the data indicated by the first BSR is not sent. The amount of data of the data. (2) Index information of the data amount of the data not transmitted in the data indicated by the first BSR. (3) third data amount information, the third data amount being a data amount of data other than the data indicated by the first BSR among the data indicated by the second BSR. (4) Index information of the third data amount.

With reference to any of the foregoing first to fourth aspects, in a possible design, the first message is a radio resource control RRC connection reconfiguration message, a physical downlink control channel PDCCH message, or a control element of a medium access control layer. MAC CE.

In a fifth aspect, the present application further provides a terminal device, including: a processor, a memory, and a transceiver; the processor can execute a program or an instruction stored in the memory, thereby implementing various implementations in the first aspect. The method of triggering the BSR.

For technical effects of the terminal device provided by the present application, refer to the technical effects of the foregoing first aspect or the implementation manner of the first aspect, and details are not described herein again.

In a sixth aspect, the application further provides an access network device, including: a processor, a memory, and a transceiver; the processor may execute a program or an instruction stored in the memory, thereby implementing the second aspect The implementation method of the BSR triggering method.

For technical effects of the access network device provided by the present application, refer to the technical effects of the foregoing second aspect or the implementation manner of the second aspect, and details are not described herein again.

In a seventh aspect, the present application further provides a storage medium, where the computer storage medium can store a program, and the program can implement some or all of the steps in each embodiment of the triggering method including the BSR provided by the application.

The eighth aspect, the application further provides a communication system, comprising the terminal device according to any one of the third aspect or the third aspect, and the implementation manner of the fourth aspect or the fourth aspect The access network device; or the terminal device according to any one of the fifth aspect or the fifth aspect, and the access method according to any one of the sixth aspect or the sixth aspect Network equipment.

DRAWINGS

1 is a block diagram of a communication system provided by the present application;

2 is a schematic structural diagram 1 of an access network device provided by the present application;

3 is a schematic structural diagram 1 of a terminal device provided by the present application;

4 is a flowchart 1 of an embodiment of a method for triggering a BSR according to the present application;

FIG. 5 is a second flowchart of an embodiment of a method for triggering a BSR according to the present application;

FIG. 6 is a flowchart 3 of an embodiment of a method for triggering a BSR according to the present application;

FIG. 7 is a flowchart 4 of an embodiment of a method for triggering a BSR according to the present application;

FIG. 8 is a flowchart 8 of an embodiment of a method for triggering a BSR according to the present application;

9A is a schematic structural diagram 2 of a terminal device provided by the present application;

9B is a schematic structural diagram 3 of a terminal device provided by the present application;

9C is a schematic structural diagram 4 of a terminal device provided by the present application;

10A is a schematic structural diagram 2 of an access network device provided by the present application;

10B is a schematic structural diagram 3 of an access network device provided by the present application;

FIG. 10C is a schematic structural diagram 4 of an access network device provided by the present application.

detailed description

First, the terms "system" and "network" are used interchangeably herein. The character "/" in this article generally indicates that the contextual object is an "or" relationship. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.

Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

Secondly, the method for triggering the BSR provided by the present application can be applied to an LTE system, LTE advanced (LTE-A), or other wireless communication systems using various radio access technologies, for example, using code division multiple access, and frequency. A system for accessing multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access, and the like. In addition, it can also be applied to the subsequent evolution system using the LTE system, such as the fifth generation 5G system and the like.

As shown in FIG. 1, the triggering method of the BSR provided by the present application can be applied to a communication system including an access network device and at least one terminal device. The terminal device involved in the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, household appliances, medical devices, industrial devices, Communication nodes on agricultural devices, or aeronautical devices, and the like, as well as various forms of user equipment (UE), mobile stations (MS), terminals, terminal equipment, and the like. For convenience of description, in the present application, the above-mentioned devices are collectively referred to as terminal devices.

The access network device involved in the present application may be a device deployed in a wireless access network to provide wireless communication functions for the terminal device. For example, it may be a base station (BS), including various forms of macro base stations, micro base stations, relay stations, controllers, access points, etc., in a system using different radio access technologies, a device having a base station function. The name may be different, for example, in an LTE network, called an evolved NodeB (eNB), in a third-generation 3G network, called a Node B, or applied to the fifth. Communication nodes in the communication system or for D2D communication, etc., may also be other similar access network devices. The access network device may also be a transmission and reception point (TRP). The structure of the TRP may be a structure of a base station, or may include a remote radio unit (RRU) and an indoor baseband processing unit ( The structure of the building baseband unit (BBU) and the antenna feeder system may also include only the structure of the radio frequency and antenna system.

Exemplarily, as shown in FIG. 2, a schematic structural diagram of an access network device provided by the present application may include an RRU, a BBU, and an antenna feeder system.

The RRU includes a digital intermediate frequency module, a transceiver module, a power amplifier, and a filtering module. The digital intermediate frequency module is used for modulation and demodulation of optical transmission, digital up-conversion, A/D conversion, etc., the transceiver module completes the conversion of the intermediate frequency signal to the radio frequency signal; and then transmits the radio frequency signal through the antenna port through the power amplifier and the filtering module. . The BBU is used to complete functions such as channel codec, baseband signal modulation and demodulation, and protocol processing. It also provides interface functions with upper layer network elements and completes the processing of the physical layer core technologies, such as OFDM in 3G and OFDM in LTE. /MIMO processing. The antenna feeder system mainly includes an antenna, and may also include a coupler, a splitter, and the like for transmitting data between other network elements, such as terminal devices, and the RRU.

FIG. 3 is a schematic structural diagram of a terminal device provided by the present application, including a processor, a memory, an RF circuit, and the like.

Wherein, the processor is a control center of the terminal device, and connects various parts of the entire terminal device by using various interfaces and lines, by running or executing software programs and/or modules stored in the memory, and calling data stored in the memory. Perform various functions and processing data of the terminal device to perform overall monitoring on the terminal device. The processor may include a digital signal processor device, a microprocessor device, an analog to digital converter, a digital to analog converter, etc., which are capable of distributing the control and signal processing functions of the terminal device in accordance with their respective capabilities. The RF circuit can be used to send and receive information and process the received information to the processor. Typically, RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc., communicating with other devices over a network via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to a global system of mobile communication (GSM), a general packet radio service (GPRS), and code division multiple access ( Code division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), Wi-Fi or low power Wi-Fi, and WLAN technology.

Based on the communication system shown in FIG. 1 above, FIG. 4 is a flowchart of an embodiment of a method for triggering a BSR according to the present application. The method includes the following steps:

Step 401: The access network device configures first indication information, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is used to separately trigger a BSR corresponding to the first logical channel. Trigger condition.

The first logical channel may be a logical channel whose priority level is higher than a preset threshold level, or a logical channel whose transmission time interval (TTI) is a preset time length, or a subcarrier interval is preset. The size of the logical channel, etc.

Optionally, the first logical channel may also be a logical channel bound to a service or a type of service, for transmitting data of a service bound thereto. For example, the first logical channel is a logical channel bound to the NR service, or a logical channel bound to a type of service whose priority level is higher than a preset threshold level, or a class with low delay scheduling requirements. The logical channel to which the service is bound.

In the present application, the access network device may separately configure a first trigger condition for the first logical channel, and when the first trigger condition is met, the terminal device may separately trigger the BSR corresponding to the first logical channel.

Exemplarily, the first trigger condition may include, but is not limited to, at least one of the following five types:

Trigger condition 1, in the case that the first buffer area is empty, the data to be transmitted in the first buffer area arrives.

Trigger condition 2, the retransmission timer corresponding to the first logical channel times out, and the first buffer area has data to be sent.

The trigger condition 3 is that, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold.

Trigger condition 4, the speed at which the data to be sent reaches the first buffer area is greater than or equal to a preset second threshold.

Trigger condition 5, the period timer corresponding to the first logical channel times out.

The first buffer area is a buffer area corresponding to the first logical channel in the terminal device. When the data to be sent arrives in the first buffer area, it indicates that the first logical channel has data to be sent.

For the trigger condition 1, in the case that the first buffer area is originally empty, once the data to be transmitted arrives, the terminal device can determine that the trigger condition 1 is satisfied, and separately trigger the BSR corresponding to the first logical channel.

For the trigger condition 2, the terminal device can start the retransmission timer every time the first BSR is triggered once. If there is data to be sent in the first buffer area, if the retransmission timer expires, the terminal device determines that the trigger condition 2 is satisfied, and separately triggers the BSR corresponding to the first logical channel.

It can be understood that the timing duration of the retransmission timer can be set according to the scheduling requirement of the data transmitted on the first logical channel. For example, if the data transmitted on the first logical channel has a low delay scheduling requirement, the access network device may set the timing of the retransmission timer to be shorter to ensure that the terminal device meets the trigger condition 2 The triggered BSR is timely enough to meet the low latency scheduling requirement of the data transmitted on the first logical channel.

For the trigger condition 5, the terminal device can trigger the first BSR separately periodically. The access network device may set a periodic timer corresponding to the first logical channel. Once the periodic timer expires, the terminal device may determine that the trigger condition 5 is satisfied, and separately trigger the BSR corresponding to the first logical channel.

Similar to the retransmission timer in the trigger condition 2, the timing duration of the periodic timer can be set according to the scheduling requirement of the data transmitted on the first logical channel. For example, if the data transmitted on the first logical channel has a low-latency scheduling requirement, the access network device may set the timing of the periodic timer to be shorter to ensure that the terminal device times out when the periodic timer expires. The triggered BSR is timely enough to meet the low latency scheduling requirement of the data transmitted on the first logical channel.

In the present application, the access network device may configure the first indication information in the first message, where the first message may be a radio resource control (RRC) connection reconfiguration message or a physical downlink control channel (physical) The downlink control channel (PDCCH) message, or a control element (CE) of the media access control (MAC) layer, or the like, may be a newly defined message for transmitting the first indication information.

Exemplarily, the first message is an RRC Connection Reconfiguration message. The access network device may add an information element (IE) to the RRC connection reconfiguration message to configure the first indication information.

Step 402: The access network device sends the first indication information to the terminal device.

It can be understood that after the first indication information is configured in the first message, the access network device can send the first indication information by sending the first message to the terminal device. That is, after receiving the first message, the terminal device may obtain the first indication information from the first message.

Step 403: The terminal device separately triggers the first BSR when the first trigger condition is met, where the first BSR is a BSR corresponding to the first logical channel.

In the present application, the access network device indicates the first logical channel indicating that the first trigger condition is used by configuring the first indication information. Since the first trigger condition is a trigger condition for separately triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger when determining that the first trigger condition is satisfied, if there is sufficient uplink grant resource. The first BSR does not need to be limited by a fixed trigger condition corresponding to the logical channel set, thereby satisfying the scheduling requirement of the data transmitted on the first logical channel.

After the terminal device separately triggers the first BSR, if the terminal device acquires an uplink grant (up link grant) resource for sending the first BSR, the terminal device may separately generate the first BSR for the first logical channel. .

Exemplarily, with reference to FIG. 4, as shown in FIG. 5, after the above step 403, the method may further include:

Step 404: The terminal device separately generates the first BSR for the first logical channel according to the data volume of the data to be sent in the first buffer area.

Step 405: The terminal device sends the first BSR to the access network device.

Step 406: The access network device schedules a first uplink grant resource according to the first BSR, where the first uplink grant resource is used to send data indicated by the first BSR.

It can be understood that the data indicated by the first BSR is the data to be sent in the first buffer area when the terminal device generates the first BSR.

The access network device allocates the first uplink authorization resource according to the first BSR, and allocates the first uplink authorization resource according to the first BSR, and sends the first uplink authorization resource to the terminal device. After receiving the first uplink grant resource, the terminal device may use the first uplink grant resource to send the data indicated by the first BSR to the access network device.

It should be noted that the terminal device uses multiple LCGs to transmit data of different services of the terminal device. Each of the plurality of LCGs is configured as the first logical channel by the access network device, and has the function of separately triggering the BSR. It is also possible that part of the LCG is the first logical channel, and the remaining part of the LCG needs to trigger the BSR based on the logical channel set. Then, on the basis of the method shown in FIG. 5, as shown in FIG. 6, after the above step 406, the method may further include:

Step 407: The terminal device triggers the second BSR when determining that the second trigger condition is met.

The second trigger condition is a trigger condition for triggering the second BSR, where the second BSR is a BSR corresponding to the logical channel set where the first logical channel of the first logical channel is located.

The second trigger condition may include the following five conditions:

The trigger condition (1), when the buffer area corresponding to the logical channel set is empty, the data to be sent to the buffer area corresponding to the logical channel set.

The trigger condition (2), when the buffer area corresponding to the logical channel set is not empty, the data to be transmitted having a higher priority level reaches the buffer area corresponding to the logical channel set.

The trigger condition (3) times out the retransmission timer corresponding to the logical channel set, and the buffer corresponding to the logical channel set has data to be transmitted.

The trigger condition (4) exceeds the period timer corresponding to the logical channel set.

Trigger condition (5) When the terminal device transmits the data, there are enough remaining resources of the BSR for transmitting the logical channel set.

Step 408: The terminal device generates the second BSR according to the data volume of the data to be sent in the buffer area corresponding to the logical channel set.

Step 409: The terminal device sends the second BSR to the access network device.

In this application, after the terminal device triggers the second BSR after determining that the second trigger condition is satisfied, the second BSR may be generated and sent in multiple manners, which will be described below with reference to the following five examples.

For example, after the terminal device triggers the second BSR after determining that the second trigger condition is met, the terminal device may buffer the data of the buffer corresponding to each LCG in the logical channel set according to an existing procedure. The data of the data to be sent is reported to the access network device through a second BSR.

In the second example, the terminal device always reports the BSR corresponding to the first logical channel separately.

Exemplarily, in conjunction with FIG. 6, as shown in FIG. 7, the second BSR triggered by the terminal device may include a third BSR and a fourth BSR. That is, it can be understood that the third BSR and the fourth BSR are both the second BSR corresponding to the logical channel set where the first logical channel is located. The third BSR bit corresponds to the BSR of the first logical channel, and the fourth BSR is the BSR of the logical channel other than the first logical channel.

Further, the foregoing step 408 may specifically include:

Step 408a: The terminal device separately generates a third BSR for the first logical channel according to the first data amount.

Step 408b: The terminal device generates a fourth BSR according to the data volume of the data to be sent in the second buffer area.

The first data amount is the data volume of the data to be sent in the first buffer area when the terminal device generates the third BSR. The second buffer area is a buffer area corresponding to other logical channels except the first logical channel in the logical channel set.

The foregoing step 409 may specifically include:

Step 409a: The terminal device sends the third BSR and the fourth BSR to the access network device.

After the terminal device generates the third BSR and the fourth BSR respectively, the third BSR and the fourth BSR can be respectively sent to the access network device.

For example, when the terminal device generates the second BSR, the data amount of the data to be sent in the buffer area corresponding to the logical channel set used may be the data amount of the data to be sent in the second buffer area.

It is to be noted that, in the third example, after the terminal device triggers the second BSR, the terminal device does not need to report the data volume of the data to be sent in the first buffer area to the access network device by using the second BSR. Therefore, compared with the first example, the data volume of the data to be sent in the first buffer area is repeatedly reported, thereby preventing the access network device from allocating redundant uplink authorization resources, thereby avoiding waste of resources.

For example, when the terminal device generates the second BSR, the data amount of the data to be sent in the buffer area corresponding to the logical channel set used by the terminal device may be the second data amount and the data of the data to be sent in the second buffer area. The sum of the quantities.

The second data amount is a data amount of data that arrives in the first buffer area within a time interval between the adjacent first time and the second time, and the first time is before the second time, the first time The time at which the first BSR is generated for the terminal device, where the second time is the time at which the terminal device generates the second BSR.

Exemplarily, it is assumed that the first BSR1 is generated and transmitted to the access network device at time t1. The terminal device generates a second BSR at the time of preparation t2. During the time interval from the time t1 to the time t2, the data to be sent arrives in the first buffer area, and the new first BSR needs to be reported. However, since the first trigger condition is not satisfied, the new first BSR cannot be triggered, so the data amount of the data to be transmitted (ie, the second data) that reaches the first buffer area within the time interval from time t1 to time t2 may be used. The quantity is reported to the access network device through the second BSR. The uplink authorization resource required for the access network device to schedule the data amount of the data to be transmitted in the first buffer area within a time interval from t1 to t2 in time.

It is to be noted that, in the fourth example, the terminal device reports the sum of the second data amount and the data amount of the data to be transmitted in the second buffer area to the access network device only through the second BSR. Therefore, compared with the first example, the amount of data that has been reported by the first BSR in the first buffer area is repeatedly reported, thereby preventing the access network device from allocating redundant uplink authorization resources. At the same time, compared with the third example, the uplink network authorization resource required by the access network device can be scheduled in time.

Example 5: The method according to the first example, the terminal device may carry the second indication information in the second BSR, where the second indication information is used to indicate that the data indicated by the second BSR is in the presence of the first BSR data.

Exemplarily, it is assumed that the terminal device generates and transmits the first BSR0 to the access network device at time t0, and generates and transmits the first BSR1 to the access network device at time t1. The terminal device generates a second BSR according to the data amount of the data to be sent in the buffer area corresponding to the logical channel set at time t2. The data to be sent in the buffer area corresponding to the logical channel set includes data to be transmitted in the first buffer area, and data to be transmitted in the second buffer area.

It is assumed that, at time t2, the terminal device is transmitting, by using the access network device, the data indicated by the first BSR0 to the access network device according to the uplink grant resource allocated by the first BSR0, and has not received the access network device according to the An uplink grant resource allocated by a BSR1. Then, at time t2, the unsent data in the first buffer area includes data that has not been completed in the data indicated by the first BSR0, data indicated by the first BSR1, and time interval from the time t1 to the time t2. The data to be transmitted in the first buffer area.

It can be understood that the data indicated by the first BSR exists in the data indicated by the second BSR, that is, the amount of data repeatedly reported in the second BSR and the first BSR. The amount of data repeatedly reported is the sum of the data amount of the data that has not been transmitted in the data indicated by the first BSR0 and the data amount of the data indicated by the first BSR1.

Exemplarily, the second indication information includes one of the following information:

(1) Data amount information of data not transmitted in the data indicated by the first BSR.

The unsent data in the data indicated by the first BSR may be data that is not sent by the data indicated by all the first BSRs generated by the terminal device before the second BSR is generated. For example, the data amount information of the untransmitted data in the data indicated by the first BSR indicates that the data amount of the data that has not been transmitted and the data indicated by the first BSR2 are not completed in the data indicated by the first BSR1 at time t3. The sum of the amount of data.

The data amount of the untransmitted data in the data indicated by the first BSR is the amount of data repeatedly reported in the second BSR and the first BSR.

The data amount information of the data that is not sent in the data indicated by the first BSR may be the size of the data amount that is repeatedly reported, or the amount of data that is repeatedly reported may occupy the data amount of the data indicated by the second BSR. proportion.

(2) Index information of the data amount of the data not transmitted in the data indicated by the first BSR.

The index information may be used to query the ratio of the amount of data repeatedly reported to the data amount of the data indicated by the second BSR. For example, the terminal device and the access network device can jointly maintain an index table. When the access network device receives the index information, the access network device can query the data of the repeatedly reported data to occupy the data indicated by the second BSR. The proportion of the amount. For example, the index information is 00, 01, 10, and 11, and the corresponding ratios are 25%, 50%, 75%, and 100%, respectively.

(3) third data amount information, the third data amount being a data amount of data other than the data indicated by the first BSR among the data indicated by the second BSR.

For example, the third data amount is the sum of the data amount of the data to be transmitted in the second buffer area and the data amount of the data reaching the first buffer area in the time interval from the time t2 to the time t3.

That is, the third data amount is the amount of data that is not repeatedly reported in the second BSR and the first BSR.

The third data amount information may be the size of the third data amount, or may be a ratio of the third data amount to the data amount of the data indicated by the second BSR.

(4) Index information of the third data amount.

For example, the index information of the third data amount may be used to query a ratio of the third data amount to the data amount of the data indicated by the second BSR.

(5) indicating that the bit information of the data indicated by the first BSR exists in the data indicated by the second BSR.

For example, when the indication bit of the second indication information is assigned a value of 1, it indicates that the data indicated by the first BSR exists in the data indicated by the second BSR.

It is to be noted that, in the example 5, the data indicated by the first BSR exists in the data indicated by the second BSR by carrying the second indication information in the second BSR. After the access network device receives the second BSR, it is determined that the third data amount is determined, and the uplink authorization resource is allocated for the third data quantity, and the amount of data repeatedly reported for the second BSR and the first BSR is not required to be repeated. Assign upstream authorization resources. Therefore, compared with the first example, the data volume of the data to be sent in the first buffer area is repeatedly reported, thereby preventing the access network device from allocating redundant uplink authorization resources, thereby avoiding waste of resources.

Further, in conjunction with FIG. 6, as shown in FIG. 8, after the foregoing step 409, the method further includes:

Step 410: The access network device determines a third data amount according to the second indication information.

Step 411: The access network device schedules a second uplink grant resource according to the third data volume, where the second uplink grant resource is used to send the third data volume.

It is to be understood that the scheduling, by the access network device, the second uplink authorization resource according to the third data quantity, includes: allocating the second uplink authorization resource according to the third data quantity, and sending the second uplink authorization resource to the terminal device. So that the terminal device sends the third data amount to the access network device by using the second uplink grant resource.

In an example, the access network device may further configure third indication information, where the third indication information may further be used to indicate a first logical channel group that adopts a third trigger condition, where the first logical channel group includes at least one logic Channel, the third trigger condition is also a trigger condition for separately triggering a BSR corresponding to the third logical channel. After receiving the third indication information, the terminal device may separately trigger the BSR corresponding to the first logical channel group when determining that the third trigger condition is met.

It can be understood that, because the third trigger condition is a trigger condition for separately triggering the BSR corresponding to the first logical channel group, the terminal device can determine the third trigger condition if there is sufficient uplink grant resource. When satisfied, the flexible triggering corresponds to the BSR of the first logical channel group, and is not limited to a fixed trigger condition corresponding to the logical channel set, thereby satisfying the scheduling requirement of the data transmitted on the first logical channel.

It is to be noted that, in the present application, when the terminal device triggers multiple BSRs, if the terminal device acquires an uplink authorization resource for sending one of the multiple BSRs, the terminal device may complete the After the BSR is sent, the trigger of the pair of BSRs is cancelled, and the trigger for the remaining BSRs is reserved.

As can be seen from the above embodiment, the access network device indicates the first logical channel indicating that the first trigger condition is used by configuring the first indication information. Since the first trigger condition is a trigger condition for separately triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger when determining that the first trigger condition is satisfied, if there is sufficient uplink grant resource. The first BSR is not limited to a fixed trigger condition corresponding to the logical channel set, so that the terminal device can generate and send the first BSR to the access network device in time, thereby satisfying the data transmitted on the first logical channel. Scheduling requirements.

The foregoing provides a description of the solution provided by the present application from the perspective of interaction between the various network elements. It can be understood that each network element, such as a terminal device, an access network device, etc., in order to implement the above functions, includes a hardware structure and/or a software module corresponding to each function. Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

The application may divide the function modules of the terminal device, the access network device, and the like according to the foregoing method example. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. . The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic, and is only a logical function division, and may be further divided in actual implementation.

FIG. 9A is a schematic diagram showing a possible structure of a terminal device involved in the foregoing embodiment, where the terminal device includes: a processing unit, a sending unit, and a receiving unit. The processing unit is configured to support the terminal device to perform step 403 in FIG. 4, 403 and 404 in FIG. 5, steps 403, 404, 407 and 408 in FIG. 6 and FIG. 8, steps 403, 404, 407 in FIG. 408a and 408b; the transmitting unit is configured to support the terminal device to perform step 405 in FIG. 5, steps 405 and 409 in FIG. 6 and FIG. 8, steps 405 and 409a in FIG. 7, and the receiving unit is configured to support the terminal device to execute the figure. Step 402 in Figure 4, steps 402 and 406 in Figures 5, 6 and 7, and steps 402, 406 and 411 in Figure 8. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.

In the case of employing an integrated unit, FIG. 9B shows a possible structural diagram of the terminal device involved in the above embodiment. The terminal device includes a processing module 902 and a communication module 903. The processing module 902 is configured to perform control management on the actions of the terminal device. For example, the processing module 902 is configured to support the terminal device to perform steps 402 and 403 in FIG. 4, steps 402-406 in FIG. 5, and step 402 in FIG. 409, steps 402-409a in FIG. 7, and steps 402-411 in FIG. 8, and/or other processes for the techniques described herein. Communication module 903 is used to support communication between the terminal device and other network entities, such as with the functional modules or network entities shown in FIG. The terminal device may further include a storage module 901 for storing program codes and data of the terminal device.

The processing module 902 can be a processor or a controller, for example, can be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (application-specific). Integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 903 can be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 901 can be a memory.

When the processing module 902 is a processor, the communication module 903 is a transceiver, and the storage module 901 is a memory, the terminal device involved in the present application may be the terminal device shown in FIG. 9C.

Referring to FIG. 9C, the terminal device includes a processor 912, a transceiver 913, a memory 911, and a bus 914. The transceiver 913, the processor 912, and the memory 911 are connected to each other through a bus 914. The bus 914 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9C, but it does not mean that there is only one bus or one type of bus.

FIG. 10A shows a possible structural diagram of an access network device involved in the foregoing embodiment, where the access network device includes: a sending unit, a processing unit, and a receiving. unit. The sending unit is configured to support the access network device to perform step 402 in FIG. 4 and FIG. 5, step 402 in FIG. 6 and FIG. 7, and steps 402 and 411 in FIG. 8; the processing unit is configured to support the access network device to perform Step 401 in FIG. 4, steps 401 and 406 in FIG. 5, FIG. 6, and FIG. 7, and steps 401, 406, 410, and 411 in FIG. 8; the receiving unit is configured to support the access network device to perform the operation in FIG. Step 405, steps 405 and 409 in Figures 6 and 8, steps 405 and 409a in Figure 7. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.

In the case of employing an integrated unit, FIG. 10B shows a possible structural diagram of the access network device involved in the above embodiment. The access network device includes a processing module 1002 and a communication module 1003. The processing module 1002 is configured to control and manage the action of the access network device. For example, the processing module 1002 is configured to support the access network device to perform steps 401-402 in FIG. 4, steps 401-402 and 405-406 in FIG. Steps 401-402, 405-406, and 409 in FIG. 6, steps 401-402, 405-406, and 409a in FIG. 7, steps 401-402, 405-406, and 409-411 in FIG. 8 and/or Other processes for the techniques described herein. The communication module 1003 is for supporting communication between the access network device and other network entities, such as with the functional modules or network entities shown in FIG. The access network device may further include a storage module 1001 for storing program codes and data of the access network device.

The processing module 1002 may be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 1003 may be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 1001 may be a memory.

When the processing module 1002 is a processor, the communication module 1003 is a transceiver, and the storage module 1001 is a memory, the access network device involved in the present application may be the access network device shown in FIG. 10C.

Referring to FIG. 10C, the access network device includes a processor 1012, a transceiver 1013, a memory 1011, and a bus 1014. The transceiver 1013, the processor 1012, and the memory 1011 are connected to each other through a bus 1014. The bus 1014 may be a PCI bus or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 10C, but it does not mean that there is only one bus or one type of bus.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

In a specific implementation, the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the triggering method of the BSR provided by the present invention. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

As shown in FIG. 1, the present application further provides a communication system including a terminal device as shown in FIG. 9A, 9B or 9C, and an access network device as shown in FIG. 10A, 10B or 10C.

Those skilled in the art will clearly understand that the techniques in this application can be implemented by means of software plus the necessary general hardware platform. Based on such understanding, the technical solutions in the present application may be embodied in the form of software products in essence or in the form of software products, which may be stored in a storage medium such as ROM/RAM, magnetic Discs, optical discs, etc., include instructions for causing a computer device (which may be a personal computer, server, or access network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

The same and similar parts between the various embodiments in this specification can be referred to each other. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.

The embodiments of the invention described above are not intended to limit the scope of the invention.

Claims (34)

A method for triggering a buffer status report BSR, the method comprising: Receiving, by the terminal device, first indication information that is sent by the access network device, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is used for separately triggering corresponding to the first logic The trigger condition of the BSR of the channel; The terminal device separately triggers the first BSR when determining that the first trigger condition is met, where the first BSR is a BSR corresponding to the first logical channel. The method of claim 1, wherein the first trigger condition comprises at least one of the following trigger conditions: Trigger condition 1, in the case that the first buffer area corresponding to the first logical channel is empty, the data to be sent arrives in the first buffer area; Trigger condition 2, the retransmission timer corresponding to the first logical channel times out, and the first buffer area has the data to be sent; Trigger condition 3, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold; Trigger condition 4, the speed of the data to be sent reaching the first buffer area is greater than or equal to a preset second threshold; Trigger condition 5, the period timer corresponding to the first logical channel times out. The method according to claim 1 or 2, wherein the method further comprises: The terminal device triggers a second BSR when it is determined that the second trigger condition is met, where the second trigger condition is a trigger condition for triggering the second BSR, and the second BSR is corresponding to the first logical channel. The BSR of the logical channel set; The terminal device generates the second BSR according to the data amount of data to be sent in the buffer area corresponding to the logical channel set; The terminal device sends the second BSR to the access network device. The method according to claim 3, wherein the second BSR comprises a third BSR and a fourth BSR, and the terminal device generates, according to the data volume of the data to be sent in the buffer corresponding to the logical channel set. The second BSR includes: The terminal device separately generates a third BSR for the first logical channel according to the first data volume, where the first data amount is a data amount of data to be sent in the first buffer area; The terminal device generates a fourth BSR according to the data volume of the data to be sent in the second buffer area, where the second buffer area is a cache corresponding to other logical channels except the first logical channel in the logical channel set. Area; The sending, by the terminal device, the second BSR to the access network device includes: The terminal device sends the third BSR and the fourth BSR to the access network device. The method according to claim 3, wherein the data amount of the data to be transmitted in the buffer corresponding to the logical channel set is the data amount of the data to be transmitted in the second buffer area, and the second buffer area And a buffer area corresponding to the other logical channels except the first logical channel in the logical channel set. The method according to claim 3, wherein the data amount of the data to be transmitted in the buffer corresponding to the logical channel set is the sum of the second data amount and the data amount of the data to be transmitted in the second buffer area. The second buffer area is a buffer area corresponding to other logical channels except the first logical channel in the logical channel set; The second data amount is a data amount of data reaching the first buffer area in a time interval between the adjacent first time and the second time, the first time before the second time, The first time is a time when the terminal device generates the first BSR, and the second time is a time when the terminal device generates the second BSR. The method according to claim 3, wherein the second BSR carries the second indication information, where the second indication information is used to indicate that the first BSR exists in the data indicated by the second BSR. The indicated data. The method of claim 7, wherein the second indication information comprises one of the following information: Data amount information of unsent data in the data indicated by the first BSR; Index information of a data amount of unsent data in the data indicated by the first BSR; a third data amount information, wherein the third data amount is a data amount of data other than the data indicated by the first BSR among the data indicated by the second BSR; Index information of the third amount of data. The method according to any one of claims 1-8, wherein the receiving, by the terminal device, the first indication information sent by the access network device comprises: Receiving, by the terminal device, a first message sent by the access network device, where the first message carries the first indication information; The first message is a radio resource control RRC connection reconfiguration message, a physical downlink control channel PDCCH message, or a control element MAC CE of the medium access control layer. A method for triggering a buffer status report BSR, the method comprising: Configuring, by the access network device, first indication information, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is used to separately trigger a BSR corresponding to the first logical channel. Triggering conditions; The access network device sends the first indication information to the terminal device. The method of claim 10, wherein the first trigger condition comprises at least one of the following trigger conditions: Trigger condition 1, in the case that the first buffer area corresponding to the first logical channel is empty, the data to be sent in the first buffer area arrives; Trigger condition 2, the retransmission timer corresponding to the first logical channel times out, and the first buffer area has the data to be sent; Trigger condition 3, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold; Trigger condition 4, the speed of the data to be sent reaching the first buffer area is greater than or equal to a preset second threshold; Trigger condition 5, the period timer corresponding to the first logical channel times out. The method according to claim 10 or 11, wherein after the access network device sends the first indication information to the terminal device, the method further includes: The access network device receives a first BSR sent by the terminal device, where the first BSR is a BSR corresponding to the first logical channel; The access network device schedules a first uplink grant resource according to the first BSR, where the first uplink grant resource is used to send data indicated by the first BSR. The method according to claim 12, wherein after the access network device receives the first BSR sent by the terminal device, the method further includes: The access network device receives the second BSR sent by the terminal device, where the second BSR carries the second indication information, where the second BSR is a BSR corresponding to the logical channel set where the first logical channel is located, The second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR; The access network device determines, according to the second indication information, a four data amount, where the third data amount is a data amount of data other than the data indicated by the first BSR in the data indicated by the second BSR. ; The access network device schedules a second uplink grant resource according to the third data volume, where the second uplink grant resource is used to send the third data volume. The method of claim 13, wherein the second indication information comprises one of the following information: Data amount information of unsent data in the data indicated by the first BSR; Index information of a data amount of unsent data in the data indicated by the first BSR; The third data amount information; Index information of the third amount of data. The method according to any one of claims 10 to 14, wherein the access network device configures the first indication information, including: The access network device configures the first indication information in the first message; The sending, by the access network device, the first indication information to the terminal device, including: Sending, by the access network device, the first message to the terminal; The first message is a radio resource control RRC connection reconfiguration message, a physical downlink control channel PDCCH message, or a control element MAC CE of the medium access control layer. A terminal device, comprising: a receiving unit, configured to receive first indication information that is sent by the access network device, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is used for a separate trigger corresponding to a trigger condition of a BSR of the first logical channel; And a processing unit, configured to separately trigger the first BSR when determining that the first trigger condition is met, where the first BSR is a BSR corresponding to the first logical channel. The terminal device according to claim 16, wherein the first trigger condition comprises at least one of the following trigger conditions: Trigger condition 1, in the case that the first buffer area corresponding to the first logical channel is empty, the data to be sent arrives in the first buffer area; Trigger condition 2, the retransmission timer corresponding to the first logical channel times out, and the first buffer area has the data to be sent; Trigger condition 3, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold; Trigger condition 4, the speed of the data to be sent reaching the first buffer area is greater than or equal to a preset second threshold; Trigger condition 5, the period timer corresponding to the first logical channel times out. The terminal device according to claim 1 or 17, wherein the terminal device further comprises a sending unit, The processing unit is further configured to trigger a second BSR when determining that the second trigger condition is met, where the second trigger condition is a trigger condition for triggering the second BSR, and the second BSR is corresponding to the a BSR of a logical channel set in which the first logical channel is located; The processing unit is further configured to generate the second BSR according to the data amount of data to be sent in the buffer area corresponding to the logical channel set; The sending unit is configured to send the second BSR to the access network device. The terminal device according to claim 18, wherein the second BSR comprises a third BSR and a fourth BSR; Generating, by the processing unit, the second BSR according to the data volume of the data to be sent in the buffer area corresponding to the logical channel set, specifically: generating a third BSR separately for the first logical channel according to the first data quantity, and according to the The data amount of the data to be sent in the second buffer area is generated by the fourth BSR, wherein the first data quantity is the data quantity of the data to be sent in the first buffer area, and the second buffer area is a buffer area corresponding to another logical channel except the first logical channel in the logical channel set; The sending, by the sending unit, the second BSR to the access network device, specifically: sending the third BSR and the fourth BSR to the access network device. The terminal device according to claim 18, wherein the data amount of the data to be transmitted in the buffer area corresponding to the logical channel set is the data quantity of the data to be transmitted in the second buffer area, and the second buffer The area is a buffer area corresponding to other logical channels except the first logical channel in the logical channel set. The terminal device according to claim 18, wherein the data amount of the data to be transmitted in the buffer corresponding to the logical channel set is the second data amount and the data amount of the data to be transmitted in the second buffer area. And the second buffer area is a buffer area corresponding to the other logical channels except the first logical channel in the logical channel set; The second data amount is a data amount of data reaching the first buffer area in a time interval between the adjacent first time and the second time, the first time before the second time, The first time is a time when the terminal device generates the first BSR, and the second time is a time when the terminal device generates the second BSR. The terminal device according to claim 18, wherein the second BSR carries the second indication information, where the second indication information is used to indicate that the first data exists in the data indicated by the second BSR The data indicated by the BSR. The method of claim 22, wherein the second indication information comprises one of the following information: Data amount information of unsent data in the data indicated by the first BSR; Index information of a data amount of unsent data in the data indicated by the first BSR; a third data amount information, wherein the third data amount is a data amount of data other than the data indicated by the first BSR among the data indicated by the second BSR; Index information of the third amount of data. A terminal device according to any one of claims 16 to 23, characterized in that Receiving, by the receiving unit, the first indication information that is sent by the access network device, where the method includes: receiving the first message sent by the access network device, where the first message carries the first indication information; The first message is a radio resource control RRC connection reconfiguration message, a physical downlink control channel PDCCH message, or a control element MAC CE of the medium access control layer. An access network device, comprising: a processing unit, configured to configure first indication information, where the first indication information is used to indicate a first logical channel that adopts a first trigger condition, where the first trigger condition is used to separately trigger a corresponding corresponding to the first logical channel The trigger condition of the BSR; And a sending unit, configured to send the first indication information configured by the processing unit to the terminal device. The access network device according to claim 25, wherein the first trigger condition comprises at least one of the following trigger conditions: Trigger condition 1, in the case that the first buffer area corresponding to the first logical channel is empty, the data to be sent in the first buffer area arrives; Trigger condition 2, the retransmission timer corresponding to the first logical channel times out, and the first buffer area has the data to be sent; Trigger condition 3, in the first buffer area, the data amount of the data to be sent is greater than or equal to a preset first threshold; Trigger condition 4, the speed of the data to be sent reaching the first buffer area is greater than or equal to a preset second threshold; Trigger condition 5, the period timer corresponding to the first logical channel times out. The access network device according to claim 25 or 26, wherein the access network device further comprises a receiving unit; The receiving unit is configured to receive the first BSR sent by the terminal device, where the first BSR is a BSR corresponding to the first logical channel; The processing unit is further configured to schedule a first uplink grant resource according to the first BSR, where the first uplink grant resource is used to send data indicated by the first BSR. The access network device according to claim 17, wherein The receiving unit is further configured to: after receiving the first BSR sent by the terminal device, receive a second BSR sent by the terminal device, where the second BSR carries second indication information, where the second The BSR is a BSR corresponding to the logical channel set in which the first logical channel is located, and the second indication information is used to indicate that the data indicated by the first BSR exists in the data indicated by the second BSR; The processing unit is further configured to determine, according to the second indication information, a fourth data amount, where the third data amount is data other than the data indicated by the first BSR in the data indicated by the second BSR. The amount of data; The processing unit is further configured to schedule a second uplink grant resource according to the third data volume, where the second uplink grant resource is used to send the third data volume. The access network device according to claim 28, wherein the second indication information comprises one of the following information: Data amount information of unsent data in the data indicated by the first BSR; Index information of a data amount of unsent data in the data indicated by the first BSR; The third data amount information; Index information of the third amount of data. An access network device according to any one of claims 25-29, characterized in that The processing unit, configured to configure the first indication information, specifically: configuring the first indication information in the first message; The sending, by the sending unit, the first indication information to the terminal device, specifically, sending the first message to the terminal; The first message is a radio resource control RRC connection reconfiguration message, a physical downlink control channel PDCCH message, or a control element MAC CE of the medium access control layer. A communication system, comprising: A terminal device according to any one of claims 16 to 24, and an access network device according to any of claims 25-30. A computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform the method of any of claims 1-9, or causing a computer to perform as claimed in claim 10- The method of any of 15th. A computer program product, characterized in that it, when run on a computer, causes the computer to perform the method of any one of claims 1-9, or causes the computer to perform any of claims 10-15 Said method. A communication device, comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor executes the program as claimed in claim 1 The method of any of the preceding claims, or the method of any of claims 10-15.

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