CN108401304B

CN108401304B - Method, device and system for triggering cache status report

Info

Publication number: CN108401304B
Application number: CN201710064549.0A
Authority: CN
Inventors: 于海凤; 熊新; 于峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-02-04
Filing date: 2017-02-04
Publication date: 2021-06-08
Anticipated expiration: 2037-02-04
Also published as: WO2018141267A1; CN108401304A

Abstract

The application discloses a method, a device and a system for triggering a buffer status report, relates to the technical field of communication, and can meet the scheduling requirements of data transmitted on different logic channels. The method comprises the following steps: the method comprises the steps that terminal equipment receives first indication information sent by access network equipment, wherein the first indication information is used for indicating a first logic channel adopting a first trigger condition, and the first trigger condition is a trigger condition used for triggering BSR (buffer status report) corresponding to the first logic channel independently; the terminal device separately triggers a first BSR when determining that the first trigger condition is satisfied, where the first BSR is a BSR corresponding to the first logical channel.

Description

Method, device and system for triggering cache status report

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

In a Long Term Evolution (LTE) system, when User Equipment (UE) needs to send uplink data, the UE sends a Buffer State Report (BSR) to a base station to inform the base station of how much uplink data the UE specifically needs to send, so that the base station can schedule uplink authorized resources for the uplink data according to a data amount of the uplink data indicated by the BSR and a preset scheduling algorithm.

Before sending the BSR to the base station, the UE first needs to trigger the BSR, i.e., instruct the UE to allow the generation and sending of the BSR. Currently, several fixed trigger conditions for BSR corresponding to a logical channel set formed by all logical channels of the UE are defined, and when the trigger conditions are satisfied, the UE can trigger the BSR. The trigger conditions of the BSR generally include the following five conditions:

(1) when an uplink buffer (buffer) of the UE is empty, the BSR may be triggered once new data arrives at the uplink buffer.

(2) When the uplink buffer is not empty, when data with higher priority reaches the uplink buffer, the BSR can be triggered.

(3) When the retransmission timer is overtime and the uplink buffer has data to send, the BSR can be triggered.

(4) When the periodic timer expires, a BSR may be triggered.

(5) When the UE has enough remaining resources to send the BSR after sending the data, the BSR may be triggered.

Currently, the BSR is sent based on a logical channel set, and when there is data to be sent on any logical channel, 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 triggering conditions is met. When enough resources send the BSR, the UE may generate the BSR and send the BSR to the base station, so that the base station allocates the uplink grant resources for the UE.

However, data transmitted on different logical channels may have different scheduling requirements, and the adoption of the trigger condition may cause that the UE and the base station cannot meet different delay scheduling requirements. For example, New Radio (NR) data in a 5G network has a strict requirement on time delay, and a base station needs to rapidly schedule uplink grant resources. However, the UE may not trigger the BSR for a long time due to the above triggering condition. For example, for the trigger condition (2), when the uplink buffer of the UE is not empty, the data arriving at the uplink buffer is always the service data with the same priority or lower priority than the priority of the service data already buffered by the uplink buffer, and the service data with higher priority arrives at the uplink buffer. The UE cannot trigger the BSR until the retransmission timer expires or the periodic timer expires. This results in that when the UE has sufficient resources to send the BSR, the UE cannot generate and send the BSR in time due to the inability to trigger the BSR in time, so that the base station cannot schedule the uplink grant resources in time. Then, for a logical channel transmitting data with a low latency scheduling requirement, the UE may not trigger BSR in time, so that the base station cannot meet the low latency scheduling requirement of the data transmitted on the logical channel.

Disclosure of Invention

The application provides a method, a device and a system for triggering a BSR (buffer status report), 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, including: the method comprises the steps that terminal equipment receives first indication information sent by access network equipment, wherein the first indication information is used for indicating a first logic channel adopting a first trigger condition, and the first trigger condition is a trigger condition used for triggering BSR (buffer status report) corresponding to the first logic channel independently; the terminal device separately triggers a first BSR when determining that the first trigger condition is satisfied, where the first BSR is a BSR corresponding to the first logical channel.

By adopting the BSR triggering method provided by the application, the terminal equipment sends the first indication information through the access network equipment and determines the first logic channel adopting the first triggering condition. Since the first triggering condition is a triggering condition for individually triggering the BSR corresponding to the first logical channel, when it is determined that the first triggering condition is satisfied under the condition of sufficient uplink grant resources, the terminal device can flexibly trigger the first BSR (i.e., the BSR corresponding to the first logical channel) without being limited by the fixed triggering condition corresponding to the logical channel set, so that the terminal device can timely generate and send the first BSR to the access network device, thereby satisfying the scheduling requirement of the data transmitted on the first logical channel.

In one possible design, the method further includes: the terminal device triggers a second BSR when determining that a second triggering condition is satisfied, wherein the second triggering condition is a triggering condition for triggering the second BSR, and the second BSR is a BSR corresponding to a logic channel set in which the first logic channel is located; the terminal device generates the second BSR according to the data amount of the data to be transmitted in the buffer corresponding to the logical channel set; the terminal device sends the second BSR to the access network device.

In a possible design, the second BSR includes a third BSR and a fourth BSR, and the terminal device generates the second BSR according to a data amount of data to be sent in a buffer corresponding to the logical channel set, including: the terminal device independently generates a third BSR for the first logical channel according to a first data volume, where the first data volume is a data volume of data to be sent in the first buffer; the terminal device generates a fourth BSR according to the data volume of data to be transmitted in a second buffer, where the second buffer is a buffer corresponding to other logical channels in the logical channel set except the first logical channel; the terminal device sends the second BSR to the access network device, including: and the terminal equipment sends the third BSR and the fourth BSR to the access network equipment.

In a possible design, the data amount of the data to be sent in the buffer corresponding to the logical channel set is the data amount of the data to be sent in a second buffer, and the second buffer is a buffer corresponding to another logical channel except the first logical channel in the logical channel set.

In this possible design, the terminal device does not need to report the data amount of the data to be sent in the first buffer to the access network device through the second BSR, and the data amount of the data to be sent in the first buffer is prevented from being repeatedly reported, so that the access network device is prevented from allocating redundant uplink authorization resources, and resource waste is avoided.

In a possible design, the data amount of the data to be sent 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 sent in the second buffer, and the second buffer is a buffer corresponding to another logical channel except the first logical channel in the logical channel set; the second data volume is a data volume of data reaching the first buffer in a time interval between a first time and a second time that are adjacent to each other, where the first time is 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.

In this possible design, since the terminal device reports the sum of the second data size and the data size of the data to be sent in the second buffer to the access network device only through the second BSR. Therefore, the data volume reported by the first BSR in the first buffer is prevented from being repeatedly reported, and the access network device is prevented from allocating redundant uplink grant resources. Meanwhile, the access network equipment is ensured to be capable of scheduling the uplink authorization resource required by the second data volume in time.

In one possible design, the second BSR carries 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 presence of the data indicated by the first BSR in the data indicated by the second BSR is indicated by carrying second indication information in the second BSR. After receiving the second BSR, the access network device can determine and determine a third data volume, and allocate uplink grant resources to the third data volume, without repeatedly allocating uplink grant resources to the data volumes repeatedly reported by the second BSR and the first BSR. Therefore, the data volume of the data to be sent in the first buffer area is prevented from being repeatedly reported, so that the access network equipment is prevented from distributing redundant uplink authorization resources, and resource waste is avoided.

In one possible design, the receiving, by the terminal device, first indication information sent by the access network device includes: the terminal device receives a first message sent by an access network device, wherein the first message carries the first indication information.

In a second aspect, the present application provides a method for triggering a BSR, including: the access network equipment configures first indication information, wherein the first indication information is used for indicating a first logical channel adopting a first trigger condition, and the first trigger condition is a trigger condition used for separately triggering BSR corresponding to the first logical channel; the access network equipment sends the first indication information to the terminal equipment.

By adopting the BSR triggering method provided by the application, the access network equipment indicates the first logic channel adopting the first triggering condition by configuring the first indication information. Because the first triggering condition is a triggering condition for individually triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger the first BSR when determining that the first triggering condition is satisfied under the condition of sufficient uplink grant resources, without being limited to the fixed triggering 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 scheduling requirement of the data transmitted on the first logical channel.

In one possible design, after the access network device sends the first indication information to the terminal device, the method further includes: the access network equipment receives a first BSR sent by the terminal equipment, wherein the first BSR is a BSR corresponding to the first logical channel; and the access network equipment schedules a first uplink grant resource according to the first BSR, wherein the first uplink grant resource is used for sending the data indicated by the first BSR.

In one possible design, after the access network device receives the first BSR sent by the terminal device, the method further includes: the access network device receives a second BSR sent by the terminal device, where the second BSR carries second indication information, the second BSR is a BSR corresponding to a logical channel set where the first logical channel is located, and the second indication information is used to indicate that data indicated by the first BSR exists in data indicated by the second BSR; the access network device determines four data volumes according to the second indication information, where the third data volume is a data volume of data other than the data indicated by the first BSR in the data indicated by the second BSR; and the access network equipment schedules a second uplink authorization resource according to the third data volume, wherein the second uplink authorization resource is used for sending the third data volume.

In one possible design, the access network device configures first indication information, including: the access network equipment configures the first indication information in a first message; the access network device sends the first indication information to the terminal device, including: the access network device sends the first message to the terminal.

In a third aspect, the present application provides a terminal device, including: a receiving unit, configured to receive first indication information 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, and the first trigger condition is a trigger condition for individually triggering BSRs corresponding to the first logical channel; a processing unit, configured to separately trigger a first BSR when it is determined that the first trigger condition is satisfied, where the first BSR is a BSR corresponding to the first logical channel.

In a possible design, the terminal device further includes a sending unit, and the processing unit is further configured to trigger a second BSR when it is determined that a second trigger condition is satisfied, where the second trigger condition is a trigger condition for triggering the second BSR, and the second BSR is a BSR corresponding to 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 a data amount of data to be sent in a buffer corresponding to the logical channel set; the sending unit is configured to send the second BSR to the access network device.

In one possible design, the second BSR includes a third BSR and a fourth BSR; the processing unit generates a second BSR according to a data amount of data to be sent in a buffer corresponding to the logical channel set, and specifically includes: independently generating a third BSR for the first logical channel according to a first data volume, and generating a fourth BSR according to a data volume of data to be sent in a second buffer, where the first data volume is the data volume of the data to be sent in the first buffer, and the second buffer is a buffer corresponding to 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, which specifically includes: and sending the third BSR and the fourth BSR to the access network equipment.

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

For technical effects of the terminal device provided by the present application, reference may be made to the technical effects of the first aspect or each implementation manner of the first aspect, and details are not described here.

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, and the first trigger condition is a trigger condition for individually triggering BSRs corresponding to the first logical channel; and the sending unit is used for sending the first indication information configured by the processing unit to the terminal equipment.

In one possible design, the access network device further includes 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.

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

In one possible design, the configuring, by the processing unit, the first indication information specifically includes: configuring the first indication information in a first message; the sending unit sends the first indication information to the terminal device, specifically including sending the first message to the terminal device.

For technical effects of the access network device provided by the present application, reference may be made to the technical effects of the second aspect or each implementation manner of the second aspect, and details are not described here again.

With reference to any one of the first to fourth aspects, in one possible design, the first trigger condition includes at least one of the following trigger conditions:

triggering condition 1, when a first buffer corresponding to the first logical channel is empty, data to be transmitted in the first buffer arrives.

Triggering condition 2, the retransmission timer corresponding to the first logical channel is overtime, and the first buffer area has the data to be sent.

And triggering condition 3, in the first buffer area, the data volume of the data to be sent is greater than or equal to a preset first threshold value.

And triggering a condition 4, wherein the speed of the data to be sent reaching the first buffer area is greater than or equal to a preset second threshold value.

The trigger condition 5 is that the periodic timer corresponding to the first logical channel times out.

With reference to any one of the first aspect to the fourth aspect, in one possible design, the second indication information includes one of the following information:

(1) data amount information of data that is not transmitted among the data indicated by the first BSR.

(2) Index information of a data amount of data that is not transmitted among the data indicated by the first BSR.

(3) Third data volume information, where the third data volume is a data volume of data, except the data shown by the first BSR, in the data indicated by the second BSR.

(4) Index information of the third data amount.

With reference to any one of the first aspect to the fourth aspect, 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 may execute a program or instructions stored in the memory to implement the BSR triggering method in various implementations of the first aspect.

In a sixth aspect, the present application further provides an access network device, including: a processor, a memory, and a transceiver; the processor may execute programs or instructions stored in the memory to implement the BSR triggering method in various implementations of the second aspect.

In a seventh aspect, the present application further provides a storage medium, where the storage medium may store a program, and when the program is executed, part or all of the steps in the embodiments of the BSR triggering method provided in the present application may be implemented.

In an eighth aspect, the present application further provides a communication system, including the terminal device according to any implementation manner of the third aspect or the third aspect, and the access network device according to any implementation manner of the fourth aspect or the fourth aspect; or comprises a terminal device according to any implementation manner of the fifth aspect or the fifth aspect and an access network device according to any implementation manner of the sixth aspect or the sixth aspect.

Drawings

Fig. 1 is a block diagram of a communication system provided herein;

fig. 2 is a first schematic structural diagram of an access network device provided in the present application;

fig. 3 is a first schematic structural diagram of a terminal device provided in the present application;

fig. 4 is a first flowchart of an embodiment of a BSR triggering method provided in the present application;

fig. 5 is a flowchart of a second embodiment of a BSR triggering method provided in the present application;

fig. 6 is a third flowchart of an embodiment of a BSR triggering method provided in the present application;

fig. 7 is a fourth flowchart of an embodiment of a BSR triggering method provided in the present application;

fig. 8 is an eighth flowchart of an embodiment of a BSR triggering method provided in the present application;

fig. 9A is a schematic structural diagram of a terminal device provided in the present application;

fig. 9B is a schematic structural diagram of a terminal device provided in the present application;

fig. 9C is a schematic structural diagram of a terminal device provided in the present application;

fig. 10A is a schematic structural diagram of an access network device provided in the present application;

fig. 10B is a schematic structural diagram of an access network device provided in the present application;

fig. 10C is a schematic structural diagram of an access network device provided in the present application.

Detailed Description

First, the terms "system" and "network" are often used interchangeably herein. The character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

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

As shown in fig. 1, the BSR triggering method provided in the present application may be applied to a communication system including an access network device and at least one terminal device. The Terminal device referred to in the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, communication nodes on household appliances, medical devices, industrial devices, agricultural devices, or aviation devices, and various forms of User Equipment (UE), Mobile Stations (MS), terminals (Terminal), Terminal devices (Terminal Equipment), and the like. For convenience of description, the above-mentioned devices are collectively referred to as terminal devices in this application.

The access network device referred to in the present application may be a device deployed in a radio access network to provide a terminal device with a wireless communication function. For example, the Base Station (BS) may include various macro base stations, micro base stations, relay stations, controllers, access points, etc., and in systems using different radio access technologies, names of devices having base station functions may be different, for example, in an LTE network, referred to as an evolved node B (eNB or eNodeB), in a third generation 3G network, referred to as a node B (node B), or a communication node applied in a fifth generation communication system or used for D2D communication, etc., and may also be other similar access network devices. The access network device may also be a transmission and reception node (TRP), and the structure of the TRP may be a structure of a base station, a structure including a Remote Radio Unit (RRU), an indoor Baseband processing Unit (BBU), and an antenna feed system, or a structure including only a Radio frequency and an 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 comprises 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, digital up-down frequency conversion, A/D conversion and the like of optical transmission, and the transceiver module completes conversion from intermediate frequency signals to radio frequency signals; and then the radio frequency signal is transmitted out through the antenna port by the power amplifier and the filtering module. The BBU is used to complete functions such as channel coding and decoding, modulation and demodulation of baseband signals, and protocol processing, and also provide interface functions with upper network elements, and complete processing procedures of physical layer core technologies, such as CDMA in 3G and OFDM/MIMO processing in LTE. The antenna feed system mainly comprises an antenna, and may further comprise a coupler, a splitter, and the like, for transmitting data between other network elements, such as a terminal device, and the RRU.

As shown in fig. 3, a schematic structural diagram of a terminal device provided in the present application includes a processor, a memory, an RF circuit, and the like.

The processor is a control center of the terminal equipment, various interfaces and lines are used for connecting all parts of the whole terminal equipment, and various functions and processing data of the terminal equipment are executed by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, so that the terminal equipment is monitored integrally. The processor may comprise a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, etc., which may be capable of distributing control and signal processing functions of the terminal device according to their respective capabilities. The RF circuit may be used to transmit and receive information and to provide the received information to the processor for processing. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (low noise amplifier), a duplexer, etc., and communicates with other devices through a wireless communication and network. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), LTE (long term evolution), Wi-Fi or low power Wi-Fi, and WLAN technology.

Based on the communication system shown in fig. 1, referring to fig. 4, there is provided a flowchart of an embodiment of a BSR triggering method provided in the present application, where 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, and the first trigger condition is a trigger condition used to trigger a BSR corresponding to the first logical channel separately.

The first logical channel may be a logical channel with a priority level higher than a preset threshold level, or a logical channel with a Transmission Time Interval (TTI) of a preset Time length, or a logical channel with a subcarrier Interval of a preset size, and the like.

Optionally, the first logical channel may also be a logical channel bound to a service or a class of services, and is used for transmitting data of the service bound to the first logical channel. For example, the first logical channel is a logical channel bound to NR service, or a logical channel bound to a type of service with a priority level higher than a preset threshold level, or a logical channel bound to a type of service with a low latency scheduling requirement, and the like.

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

Illustratively, the first trigger condition may include, but is not limited to, at least one of the following 5:

condition 1 is triggered, and when the first buffer is empty, data to be transmitted arrives in the first buffer.

Triggering condition 2, the retransmission timer corresponding to the first logical channel is expired, and the first buffer has data to be sent.

And triggering a condition 3, wherein the data volume of the data to be sent in the first buffer area is greater than or equal to a preset first threshold value.

Trigger condition 5, the periodic 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 at the first buffer area, it means that the data to be sent exists on the first logical channel.

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

For trigger condition 2, the terminal device may start the retransmission timer every time the terminal device separately triggers the first BSR. If the retransmission timer is out of time under the condition that data to be transmitted exists in the first buffer, the terminal device determines that the triggering condition 2 is met, and then triggers the BSR corresponding to the first logical channel separately.

It is to be understood that the timing duration of the retransmission timer may 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 duration of the retransmission timer to be shorter, so as to ensure that the BSR triggered by the terminal device when the trigger condition 2 is met is timely enough to meet the low-latency scheduling requirement of the data transmitted on the first logical channel.

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

Similar to the retransmission timer in the trigger condition 2, the timing duration of the periodic timer may 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 duration of the periodic timer to be shorter, so as to ensure that the BSR triggered by the terminal device when the periodic timer expires is timely enough to meet the low-latency scheduling requirement of the data transmitted on the first logical channel.

In this application, the Access network device may configure the first indication information in a first message, where the first message may be a Radio Resource Control (RRC) connection reconfiguration message, a Physical Downlink Control Channel (PDCCH) message, a Control Element (CE) of a Medium Access Control (MAC) layer, or the like, or may be a newly defined message for transmitting the first indication information.

Illustratively, 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 is to be understood that, after the access network device configures the first indication information in the first message, the first indication information may be sent 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.

In step 403, the terminal device separately triggers a first BSR when determining that the first trigger condition is satisfied, where the first BSR is a BSR corresponding to the first logical channel.

In this application, the access network device indicates, by configuring the first indication information, the first logical channel indicating that the first trigger condition is adopted. Since the first triggering condition is a triggering condition for individually triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger the first BSR when determining that the first triggering condition is satisfied under the condition that there is enough uplink grant resource, without being limited to the fixed triggering 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 obtains an uplink Grant (Up Link Grant) resource for transmitting the first BSR, the terminal device may separately generate the first BSR for the first logical channel.

Illustratively, in conjunction with fig. 4, as shown in fig. 5, after the 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 amount of the data to be transmitted in the first buffer.

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 data to be sent in the first buffer when the terminal device generates the first BSR.

The access network equipment schedules a first uplink authorization resource according to the first BSR, and includes allocating the first uplink authorization resource according to the first BSR, and sends the first uplink authorization resource to the terminal equipment. After receiving the first uplink grant resource, the terminal device may send the data indicated by the first BSR to the access network device using the first uplink grant resource.

It should be noted that the terminal device may use multiple LCGs to transmit data of different services of the terminal device. The multiple LCGs are all configured as a first logical channel by the access network equipment and have the function of triggering the BSR independently. It is also possible that part of the LCGs are the first logical channels and the remaining part of the LCGs need to trigger BSR based on the set of logical channels. Then, on the basis of the method shown in fig. 5, as shown in fig. 6, after the step 406, the method may further include:

step 407, the terminal device triggers the second BSR when determining that the second trigger condition is satisfied.

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

The second trigger condition may include the following 5 conditions:

and triggering condition (1), and when the buffer corresponding to the logical channel set is empty, sending data to be sent to the buffer corresponding to the logical channel set.

And (2) under the condition that the buffer area corresponding to the logical channel set is not empty, the data to be sent with higher priority level reaches the buffer area corresponding to the logical channel set.

And (3) the retransmission timer corresponding to the logical channel set is overtime, and the buffer area corresponding to the logical channel set has data to be sent.

The trigger condition (4) is that the periodic timer corresponding to the logical channel set is exceeded.

Triggering condition (5) when the terminal device has finished sending data, there is enough remaining resources to send the BSR of the logical channel set.

Step 408, the terminal device generates the second BSR according to the data amount of the data to be sent in the buffer corresponding to the logical channel set.

In step 409, the terminal device sends the second BSR to the access network device.

In this application, after determining that the second trigger condition is satisfied, the terminal device may generate and transmit the second BSR in multiple ways, which is described below with reference to the following 5 examples.

For example, after the terminal device determines that the second BSR is triggered when the second trigger condition is met, the terminal device may report the data buffering state (i.e., the data amount information of the data to be sent) of the buffer corresponding to each LCG in the logical channel set to the access network device through one second BSR according to the existing procedure.

As an example two, the terminal device always reports the BSR corresponding to the first logical channel separately.

Illustratively, in conjunction with fig. 6, as shown in fig. 7, the terminal device triggered second BSR 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 set of logical channels in which the first logical channel is located. Wherein the third BSR bit corresponds to the BSR of the first logical channel alone, and the fourth BSR is the BSR of other logical channels in the logical channel set except the first logical channel.

Further, the 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 amount of the data to be transmitted in the second buffer.

The first data volume is a data volume of data to be sent in the first buffer 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 step 409 may specifically include:

in 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, the terminal device may send the third BSR and the fourth BSR to the access network device, respectively.

In an example three, when the terminal device generates the second BSR, the data amount of the data to be sent in the buffer corresponding to the logical channel set may be the data amount of the data to be sent in the second buffer.

It should 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 amount of the data to be sent in the first buffer to the access network device through the second BSR. Therefore, compared with the first example, the data volume of the data to be sent in the first buffer is prevented from being repeatedly reported, so that the access network device is prevented from allocating redundant uplink grant resources, and resource waste is avoided.

In example four, when the terminal device generates the second BSR, the data amount of the data to be sent in the buffer corresponding to the logical channel set may be a sum of the second data amount and the data amount of the data to be sent in the second buffer.

The second data volume is a data volume of data reaching the first buffer in a time interval between a first time and a second time that are adjacent to each other, where the first time is 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.

Illustratively, assume that a first BSR1 is generated and transmitted to the access network device at time t 1. The terminal generates a second BSR at preparation time t 2. In the time interval from the time t1 to the time t2, the data to be transmitted reaches the first buffer, and a new first BSR needs to be reported. However, since the first trigger condition is not satisfied yet, and a new first BSR cannot be triggered, the data amount of the data to be sent (i.e., the second data amount) that reaches the first buffer in the time interval from the time t1 to the time t2 may be reported to the access network device through the second BSR. So that the access network device can schedule the uplink grant resources required by the data volume of the data to be sent, which will reach the first buffer in the time interval from the time t1 to the time t 2.

It should be noted that, in the fourth example, the terminal device reports the sum of the second data volume and the data volume of the data to be sent in the second buffer to the access network device only through the second BSR. Therefore, compared to the example one, the data amount that has been reported by the first BSR in the first buffer is prevented from being repeatedly reported, so that the access network device is prevented from allocating redundant uplink grant resources. Meanwhile, compared with the third example, it is ensured that the access network device can schedule the uplink grant resource required by the second data volume in time.

In example five, based on the method in example one, the terminal device may carry second indication information in the second BSR, 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.

Illustratively, assume 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 t 1. And the terminal device generates a second BSR at time t2 according to the data amount of the data to be sent in the buffer corresponding to the logical channel set. The data to be sent in the buffer area corresponding to the logical channel set comprises the data to be sent in the first buffer area and the data to be sent in the second buffer area.

It is assumed that, at time t2, the terminal device is transmitting data indicated by the first BSR0 to the access network device using the uplink grant resources allocated by the access network device according to the first BSR0, and has not received the uplink grant resources allocated by the access network device according to the first BSR 1. Then at time t2, the unsent data in the first buffer includes data that has not been completely transmitted among the data indicated by the first BSR0, the data indicated by the first BSR1, and the data to be transmitted that arrives in the first buffer during the time interval from time t1 to time t 2.

It can be understood that the data indicated by the first BSR exists in the data indicated by the second BSR, i.e., the amount of data repeatedly reported in the second BSR and the first BSR. The repeatedly reported data amount is the sum of the data amount of the data that has not been completely transmitted in the data indicated by the first BSR0 and the data amount of the data indicated by the first BSR 1.

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

The data that is not transmitted in the data indicated by the first BSR may be data that is not transmitted in all data indicated by the first BSR and generated by the terminal device before the second BSR is generated. For example, the data amount information of the data that is not transmitted among the data indicated by the first BSR indicates, at time t3, the sum of the data amount of the data that is not yet completely transmitted among the data indicated by the first BSR1 and the data amount of the data indicated by the first BSR 2.

The data volume of the unsent data in the data indicated by the first BSR is the data volume repeatedly reported by the second BSR and the first BSR.

The data volume information of the unsent data in the data indicated by the first BSR may be the size of the repeatedly reported data volume, or may be a ratio of the repeatedly reported data volume to the data volume of the data indicated by the second BSR.

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

For example, the third data amount is the sum of the data amount of the data to be transmitted in the second buffer and the data amount of the data reaching the first buffer in the time interval from the time t2 to the time t 3.

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

The third data size information may be a size of the third data size, or may be a ratio of the third data size to the data size 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) Bit information indicating that 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 1, it indicates that the data indicated by the first BSR exists in the data indicated by the second BSR.

It should be noted that, in example five, the presence of the data indicated by the first BSR in the data indicated by the second BSR is indicated by carrying the second indication information in the second BSR. After receiving the second BSR, the access network device can determine and determine a third data volume, and allocate uplink grant resources to the third data volume, without repeatedly allocating uplink grant resources to the data volumes repeatedly reported by the second BSR and the first BSR. Therefore, compared with the first example, the data volume of the data to be sent in the first buffer is prevented from being repeatedly reported, so that the access network device is prevented from allocating redundant uplink grant resources, and resource waste is avoided.

Further, referring to fig. 6, as shown in fig. 8, after the step 409, the method further includes:

in 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 amount, where the second uplink grant resource is used to send the third data amount.

It can be understood that the scheduling, by the access network device, the second uplink grant resource according to the third data amount includes: and allocating a second uplink authorized resource according to the third data volume, and sending the second uplink authorized resource to the terminal equipment. So that the terminal device sends the third data volume to the access network device by using the second uplink grant resource.

In one example, the access network device may further configure third indication information, where the third indication information may be further used to indicate a first logical channel group that employs a third trigger condition, where the first logical channel group includes at least one logical channel, and 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 trigger the BSR corresponding to the first logical channel group separately when determining that the third trigger condition is satisfied.

It can be understood that, since the third triggering condition is a triggering condition for individually triggering the BSRs corresponding to the first logical channel group, in the case that there are enough uplink grant resources, the terminal device can flexibly trigger the BSRs corresponding to the first logical channel group when determining that the third triggering condition is satisfied, without being limited to the fixed triggering condition corresponding to the set of logical channels, so as to satisfy the scheduling requirement of the data transmitted on the first logical channel.

It should be noted that, in this application, when a terminal device triggers multiple BSRs, if the terminal device obtains an uplink grant resource for transmitting one BSR of the multiple BSRs, the terminal device may cancel triggering of the pair of BSRs and keep triggering of remaining BSRs after completing transmission of the BSRs.

As can be seen from the foregoing embodiments, the access network device indicates, by configuring the first indication information, the first logical channel indicating that the first trigger condition is adopted. Because the first triggering condition is a triggering condition for individually triggering the BSR corresponding to the first logical channel, the terminal device can flexibly trigger the first BSR when determining that the first triggering condition is satisfied under the condition of sufficient uplink grant resources, without being limited to the fixed triggering 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 scheduling requirement of the data transmitted on the first logical channel.

The above-mentioned scheme provided by the present application is mainly introduced from the perspective of interaction between network elements. It is to be understood that each network element, such as the terminal device, the access network device, etc., contains corresponding hardware structures and/or software modules for performing each function in order to realize the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The present application may perform functional module division on the terminal device, the access network device, and the like according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 9A shows a possible structural diagram of the terminal device according to the foregoing embodiment, where the terminal device includes: processing unit, transmitting unit and receiving unit. The processing unit is configured to support the terminal device to perform steps 403 in fig. 4, 403 and 404 in fig. 5, steps 403, 404, 407, and 408 in fig. 6 and 8, and steps 403, 404, 407, 408a, and 408b in fig. 7; the sending unit is configured to support the terminal device to perform step 405 in fig. 5, steps 405 and 409 in fig. 6 and 8, and steps 405 and 409a in fig. 7; the receiving unit is configured to support the terminal device to perform steps such as step 402 in fig. 4, steps 402 and 406 in fig. 5, fig. 6 and fig. 7, and steps 402, 406 and 411 in fig. 8. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 9B shows a schematic diagram of a possible structure of the terminal device involved in the above-described embodiment, in the case of an integrated unit. The terminal device includes: a processing module 902 and a communication module 903. The processing module 902 is configured to control and manage 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, step 402 and 406 in fig. 5, step 402 and 409 in fig. 6, step 402 and 409a in fig. 7, and step 402 and 411 in fig. 8, and/or other processes for the technologies described herein. The communication module 903 is used to support communication between the terminal device and other network entities, for example, the functional modules or network entities shown in fig. 1. The terminal device may also include a storage module 901 for storing program codes and data for the terminal device.

The Processing module 902 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 903 may be a transceiver, a transceiving circuit, a communication interface, or the like. The storage module 901 may 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 related to 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. Wherein, the transceiver 913, the processor 912, and the memory 911 are connected to each other through the bus 914; the bus 914 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, fig. 9C is shown with only one thick line, but does not show only one bus or one type of bus.

In the case of dividing each functional module by corresponding functions, fig. 10A shows a possible structural diagram of the access network device in the foregoing embodiment, where the access network device includes: the device comprises 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 5, step 402 in fig. 6 and 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, 6 and 7, and steps 401, 406, 410 and 411 in fig. 8; the receiving unit is configured to support the access network device to perform step 405 in fig. 5, steps 405 and 409 in fig. 6 and 8, and steps 405 and 409a in fig. 7. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In case of using integrated units, fig. 10B shows a schematic diagram of a possible structure of the access network device involved in the above embodiments. 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 actions of the access network device, for example, the processing module 1002 is configured to support the access network device to execute the steps 401-. The communication module 1003 is used for supporting communication between the access network device and other network entities, for example, communication between the functional modules or network entities shown in fig. 1. The access network device may also include a storage module 1001 for storing program codes and data for the access network device.

The processing module 1002 may be a processor or a controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 1003 may be a transceiver, a transceiver circuit or a communication interface, etc. 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 according to the present application may be the access network device shown in fig. 10C.

Referring to fig. 10C, the access network apparatus includes: a processor 1012, a transceiver 1013, a memory 1011, and a bus 1014. Wherein, the transceiver 1013, the processor 1012, and the memory 1011 are connected to each other by a bus 1014; the bus 1014 may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10C, but this does not indicate only one bus or one type of bus.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

In specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and when the program is executed, the program may include some or all of the steps in each embodiment of the BSR triggering method provided in 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 also 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 readily appreciate that the techniques of this application may be implemented in software plus any necessary general purpose hardware platform. Based on such understanding, the technical solutions in the present application may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or an access network device, etc.) to execute the method according to the embodiments or some parts of the embodiments of the present invention.

The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. A method for triggering Buffer Status Report (BSR), the method comprising:

the method comprises the steps that terminal equipment receives first indication information sent by access network equipment, wherein the first indication information is used for indicating a first logic channel adopting a first trigger condition, and the first trigger condition is a trigger condition used for triggering BSR (buffer status report) corresponding to the first logic channel independently;

the terminal device separately triggers a first BSR when determining that the first trigger condition is satisfied, wherein the first BSR is a BSR corresponding to the first logical channel;

wherein the first trigger condition comprises at least one of the following trigger conditions:

triggering condition 1, that is, when a first buffer corresponding to the first logical channel is empty, data to be transmitted in the first buffer arrives;

triggering condition 2, that is, a retransmission timer corresponding to the first logical channel is overtime, and the first cache region has the data to be sent;

triggering a condition 3, in the first cache region, where the data amount of the data to be sent is greater than or equal to a preset first threshold;

triggering a condition 4, wherein the speed of the data to be sent reaching the first cache region is greater than or equal to a preset second threshold value;

and triggering condition 5, wherein a periodic timer corresponding to the first logic channel is overtime.

2. The method of claim 1, further comprising:

the terminal device triggers a second BSR when determining that a second triggering condition is met, wherein the second triggering condition is a triggering condition for triggering the second BSR, and the second BSR is a BSR corresponding to a logic channel set where the first logic channel is located;

the terminal equipment 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;

and the terminal equipment sends the second BSR to the access network equipment.

3. The method according to claim 2, wherein the second BSR includes a third BSR and a fourth BSR, and the generating, by the terminal device, the second BSR according to the data amount of the data to be sent in the buffer corresponding to the logical channel set includes:

the terminal device independently generates a third BSR for the first logical channel according to a first data volume, where the first data volume is a data volume of data to be sent in the first buffer;

the terminal device generates a fourth BSR according to the data volume of data to be sent in a second buffer, where the second buffer is a buffer corresponding to other logical channels in the logical channel set except the first logical channel;

the terminal device sending the second BSR to the access network device, including:

and the terminal equipment sends the third BSR and the fourth BSR to the access network equipment.

4. The method according to claim 2, wherein a data amount of data to be sent in the buffer corresponding to the logical channel set is a data amount of data to be sent in a second buffer, and the second buffer is a buffer corresponding to another logical channel in the logical channel set except the first logical channel.

5. The method according to claim 2, wherein the data amount of the data to be sent in the buffer corresponding to the logical channel set is a sum of a second data amount and the data amount of the data to be sent in a second buffer, and the second buffer is a buffer corresponding to another logical channel in the logical channel set except the first logical channel;

the second data volume is a data volume of data reaching the first buffer in a time interval between a first time and a second time which are adjacent to each other, where the first time is 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.

6. The method of claim 2, wherein the second BSR carries second indication information indicating that data indicated by the first BSR exists in the data indicated by the second BSR.

7. The method of claim 6, wherein the second indication information comprises one of the following information:

(1) data amount information of data that is not transmitted among the data indicated by the first BSR;

(2) index information of a data amount of data that is not transmitted among the data indicated by the first BSR;

(3) third data volume information, where the third data volume is a data volume of data, except for the data shown by the first BSR, in the data indicated by the second BSR;

(4) index information of the third data amount.

8. The method according to any one of claims 1 to 7, wherein the receiving, by the terminal device, the first indication information sent by the access network device comprises:

the terminal equipment receives a first message sent by access network equipment, wherein the first message carries the first indication information;

wherein 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 a medium access control layer.

9. A method for triggering Buffer Status Report (BSR), the method comprising:

configuring first indication information by access network equipment, wherein the first indication information is used for indicating a first logic channel adopting a first trigger condition, and the first trigger condition is a trigger condition used for separately triggering a BSR (buffer status report) corresponding to the first logic channel;

the access network equipment sends the first indication information to terminal equipment;

10. The method of claim 9, wherein after the access network device sends the first indication information to a terminal device, the method further comprises:

the access network equipment receives a first BSR sent by the terminal equipment, wherein the first BSR is a BSR corresponding to the first logical channel;

and the access network equipment schedules a first uplink authorization resource according to the first BSR, wherein the first uplink authorization resource is used for sending the data indicated by the first BSR.

11. The method of claim 10, wherein after the access network device receives the first BSR sent by the terminal device, the method further comprises:

the access network device receives a second BSR sent by the terminal device, where the second BSR carries second indication information, the second BSR is a BSR corresponding to a logical channel set where the first logical channel is located, and the second indication information is used to indicate that data indicated by the first BSR exists in data indicated by the second BSR;

the access network equipment determines a third data volume according to the second indication information, wherein the third data volume is the data volume of data except the data indicated by the first BSR in the data indicated by the second BSR;

and the access network equipment schedules a second uplink authorization resource according to the third data volume, wherein the second uplink authorization resource is used for sending the third data volume.

12. The method of claim 11, wherein the second indication information comprises one of the following information:

(3) the third data volume information;

(4) index information of the third data amount.

13. The method of any of claims 9-12, wherein the configuring the first indication information by the access network device comprises:

the access network equipment configures the first indication information in a first message;

the access network device sends the first indication information to a terminal device, including:

the access network equipment sends the first message to the terminal;

14. A terminal device, comprising:

a receiving unit, configured to receive first indication information sent by an access network device, where the first indication information is used to indicate a first logical channel that uses a first trigger condition, and the first trigger condition is a trigger condition for individually triggering BSRs corresponding to the first logical channel;

a processing unit, configured to separately trigger a first BSR when it is determined that the first trigger condition is satisfied, where the first BSR is a BSR corresponding to the first logical channel;

15. The terminal device according to claim 14, wherein the terminal device further comprises a transmitting unit,

the processing unit is further configured to trigger a second BSR when it is determined that a second trigger condition is satisfied, where the second trigger condition is a trigger condition for triggering the second BSR, and the second BSR is a BSR corresponding to 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 a data amount of data to be sent in a buffer corresponding to the logical channel set;

the sending unit is configured to send the second BSR to the access network device.

16. The terminal device of claim 15, wherein the second BSR includes a third BSR and a fourth BSR;

the processing unit generates a second BSR according to the data amount of the data to be sent in the buffer corresponding to the logical channel set, and specifically includes: independently generating a third BSR for the first logical channel according to a first data volume, and generating a fourth BSR according to a data volume of data to be sent in a second buffer, where the first data volume is the data volume of the data to be sent in the first buffer, and the second buffer is a buffer corresponding to another logical channel in the logical channel set except the first logical channel;

the sending unit sends the second BSR to the access network device, which specifically includes: and sending the third BSR and the fourth BSR to the access network equipment.

17. The terminal device according to claim 15, wherein a data amount of data to be sent in the buffer corresponding to the logical channel set is a data amount of data to be sent in a second buffer, and the second buffer is a buffer corresponding to another logical channel in the logical channel set except the first logical channel.

18. The terminal device according to claim 15, wherein a data amount of data to be sent in the buffer corresponding to the logical channel set is a sum of a second data amount and a data amount of data to be sent in a second buffer, and the second buffer is a buffer corresponding to another logical channel in the logical channel set except the first logical channel;

19. The terminal device of claim 15, wherein the second BSR carries second indication information, and wherein the second indication information is used to indicate that data indicated by the first BSR exists in the data indicated by the second BSR.

20. The terminal device according to claim 19, wherein the second indication information comprises one of the following information:

(4) index information of the third data amount.

21. The terminal device according to any of claims 14-20,

the receiving unit receives first indication information sent by an access network device, and specifically includes: receiving a first message sent by access network equipment, wherein the first message carries the first indication information;

22. 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, and the first trigger condition is a trigger condition for individually triggering BSRs corresponding to the first logical channel;

a sending unit, configured to send the first indication information configured by the processing unit to a terminal device;

23. The access network device of claim 22, wherein the access network device further comprises a receiving unit;

the receiving unit is configured to receive a 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.

24. The access network device of claim 23,

the receiving unit is further configured to receive a second BSR sent by the terminal device after receiving the first BSR sent by the terminal device, where the second BSR carries second indication information, the second BSR is a BSR corresponding to a logical channel set where the first logical channel is located, and the second indication information is used to indicate that data indicated by the first BSR exists in data indicated by the second BSR;

the processing unit is further configured to determine a third data volume according to the second indication information, where the third data volume is a data volume of data, except for the data indicated by the first BSR, in the data indicated by the second BSR;

the processing unit is further configured to schedule a second uplink grant resource according to the third data amount, where the second uplink grant resource is used to send the third data amount.

25. The access network device of claim 24, wherein the second indication information comprises one of:

(3) the third data volume information;

(4) index information of the third data amount.

26. An access network device according to any one of claims 22-25,

the processing unit configures first indication information, and specifically includes: configuring the first indication information in a first message;

the sending unit sends the first indication information to a terminal device, specifically including sending the first message to the terminal device;

27. A communication system, comprising:

a terminal device according to any of claims 14-21 and an access network device according to any of claims 22-26.