WO2021062849A1 - 缓冲状态报告上报方法及通信装置 - Google Patents

缓冲状态报告上报方法及通信装置 Download PDF

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Publication number
WO2021062849A1
WO2021062849A1 PCT/CN2019/109778 CN2019109778W WO2021062849A1 WO 2021062849 A1 WO2021062849 A1 WO 2021062849A1 CN 2019109778 W CN2019109778 W CN 2019109778W WO 2021062849 A1 WO2021062849 A1 WO 2021062849A1
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WO
WIPO (PCT)
Prior art keywords
bsr
priority
parameter
size
uplink
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PCT/CN2019/109778
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English (en)
French (fr)
Inventor
余唱
常俊仁
肖潇
李翔宇
王君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CA3153205A priority Critical patent/CA3153205A1/en
Priority to EP19947686.2A priority patent/EP4044638A4/en
Priority to AU2019468598A priority patent/AU2019468598B2/en
Priority to PCT/CN2019/109778 priority patent/WO2021062849A1/zh
Priority to CN201980100946.6A priority patent/CN114467319A/zh
Priority to JP2022519845A priority patent/JP7472276B2/ja
Priority to MX2022003828A priority patent/MX2022003828A/es
Priority to BR112022006081A priority patent/BR112022006081A2/pt
Publication of WO2021062849A1 publication Critical patent/WO2021062849A1/zh
Priority to US17/656,980 priority patent/US20220225382A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • This application relates to the field of communication technology, and in particular to a method and a communication device for reporting buffer status reports.
  • the Internet of Vehicles that is, the Internet of Vehicles, takes the moving vehicle as the object of information perception. With the help of a new generation of information and communication technology, it realizes the network connection between the car and the X (that is, the car and the car, people, road, and service platform). Improve the overall level of intelligent driving of vehicles, provide users with safe, comfortable, intelligent and efficient driving experience and traffic services, at the same time improve the efficiency of traffic operation, and enhance the intelligent level of social traffic services.
  • V2X Vehicle to vehicle
  • V2P vehicle to pedestrian
  • V2I vehicle to roadside infrastructure
  • V2N vehicle to network
  • the terminal can send uplink data to the base station through the uplink (UL) as shown in FIG. 2.
  • the terminal needs to send a UL buffer status report (BSR) to the base station via UL.
  • BSR UL buffer status report
  • the UL BSR is used to indicate how much data to be sent in the uplink buffer of the terminal, so that the base station can use the
  • the UL BSR allocates uplink resources (UL grant) for the terminal to transmit uplink data (UL data).
  • the terminals can communicate directly through the sidelink (SL) shown in Figure 2.
  • the terminal needs to send SL BSR to the base station through the UL as shown in Figure 2.
  • the SL BSR is used to indicate how much to send in the side buffer of the terminal. Data, so that the base station allocates the side line resource (SL grant) for transmitting the side line link data (SL data) to the terminal based on the SL BSR.
  • the embodiments of the present application provide a method and device for reporting a buffer status report to improve the transmission efficiency of uplink data and/or sidelink data.
  • an embodiment of the present application provides a method for reporting a buffer status report, which is applied to a terminal device or a component of a terminal device (such as a chip system), or other components with terminal functions.
  • the method includes: the terminal device obtains the first parameter corresponding to the side link buffer status report SL BSR and the second parameter corresponding to the uplink buffer status report UL BSR, and determines the SLBSR according to the first parameter and the second parameter
  • the priority is higher than the priority of the UL BSR, or it is determined that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the first parameter is related to the priority of the side link service with data
  • the second parameter is related to the priority of the uplink service with data.
  • the first parameter is determined by the priority corresponding to the side link service with data
  • the second parameter is determined by the priority of the uplink service with data.
  • one or more side link services with data can be assigned to a certain priority (for example, the priority of the side link service with the highest priority among the priorities). ) As the first parameter.
  • a certain priority (for example, the highest priority) among the priorities corresponding to one or more uplink services with data respectively is used as the second parameter.
  • the terminal device may continue to prioritize encapsulation of SL BSR Media access control control element (MAC CE) or UL BSR MAC CE, and the transmission of uplink data or side link data is delayed.
  • MAC CE Media access control control element
  • the terminal device Since it is based on the priority of the side-link service of the actually existing side-link data and/or the priority of the uplink service with the uplink data, the priority of the UL BSR and SL BSR is determined, and we get The priority comparison result is more in line with business needs. In this way, the terminal device can send high-priority uplink data or side-link data preferentially in the subsequent, so as to improve the transmission efficiency of the uplink data or the side-link data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or ,
  • the second parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the side-link service includes one or more of the following: side-link QoS flow, side-link logical channel LCH, side-link data radio bearer DRB, side-link Logical channel group LCG, side link service target identifier, side link packet data unit session PDU session.
  • Uplink services include one or more of the following: uplink quality of service flow, uplink logical channel LCH, uplink data radio bearer DRB, uplink logical channel group LCG, uplink service target identifier, uplink Road packet data unit session.
  • the side link service is SL LCG
  • the first parameter is the priority of the SL LCG with the highest priority among the priorities corresponding to one or more SL LCGs that have side link data
  • the uplink service is UL LCG
  • the second parameter is the priority of the UL LCG with the highest priority among the priorities corresponding to one or more UL LCGs with uplink data.
  • the side link service is SL LCH
  • the first parameter is the priority of the SL LCH with the highest priority among the priorities corresponding to one or more SL LCHs with side link data
  • the uplink service is UL LCH
  • the second parameter is the priority of the UL LCH with the highest priority among the priorities corresponding to one or more UL LCHs with uplink data.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR according to the first parameter and the second parameter, or determines that the priority of the UL BSR is higher than the priority of the SL BSR, including :
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR; the first parameter is less than the second parameter, the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the method also includes:
  • the terminal device There is a service that satisfies the first condition, the terminal device generates a first BSR, and the first BSR includes buffer status information of the service that satisfies the first condition;
  • the terminal device sends the first BSR
  • the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the terminal device sends the first BSR on the first uplink resource.
  • the first BSR does not include buffer status information of services that do not meet the first condition. That is, the first BSR only includes buffer status information of services that meet the first condition. That is, only the buffer status information of the services whose priority is greater than or equal to the first threshold is included.
  • the first threshold includes any one of the following: a pre-configured value, or a network configuration value, or the priority of the service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR , Or, the priority of the business with the highest priority among the priorities of one or more services corresponding to the presence of data in the low-priority BSR, or the priority corresponding to one or more services of the low-priority BSR with the presence of data The priority of the business with the highest priority in the.
  • the first threshold may also be a value determined by the terminal device based on some parameters. For example, the terminal device determines the first threshold based on the size of the first uplink resource.
  • the priority of UL BSR is higher than the priority of SL BSR, and the low priority BSR is SL BSR; the priority of UL BSR is lower than the priority of SL BSR, and the low priority BSR is UL BSR.
  • the services may include side link services and uplink services.
  • the uplink service is an uplink logical channel
  • the side link service is a side link logical channel.
  • the technical solution corresponding to Figure 6(a) is used to compare the priority of the business. If the first threshold is 4, the LCH with data is black filled and the priority values are 2, 7, 8, 4, and 4 respectively.
  • SL LCH of 6 and 10 and UL LCH with priority values of 3, 4, 5, and 6, respectively.
  • the priority of the first SL LCH in the SL LCG1 and the priority of the third UL LCH in the UL LCG1 corresponding to DST1 are greater than or equal to the first threshold. That is, the LCH that satisfies the first condition is the LCH indicated by the arrow in FIG. 11.
  • the services may include side link services and uplink services.
  • the uplink service is an uplink logical channel group
  • the side-link service is a side-link logical channel group.
  • the priority value of LCG1 corresponding to DST3 is 1, and the priority value of LCG1 corresponding to DST4 is 4. That is, the LCGs whose LCG priority is greater than or equal to the first threshold are the 4 LCGs shown by the dashed box.
  • the service that meets the first condition is a side link service or an uplink service.
  • the first threshold may be related to the priority of UL BSR and SL BSR.
  • the service that meets the first condition refers to the uplink service whose service priority is greater than or equal to the first threshold.
  • the service that meets the first condition refers to the side link service whose service priority is greater than or equal to the first threshold.
  • the corresponding technical solutions of Fig. 6(a) or Fig. 6(b) or Fig. 6(c) can be used to compare the priorities of UL BSR and SL BSR, or the priorities of UL BSR and SL BSR can be compared according to the prior art.
  • the high-priority BSR can be truncated. That is, the number of LCG buffer status information included in the high-priority BSR is limited.
  • the first threshold may be the priority of the service with the highest priority among the priorities corresponding to the service triggering the low-priority BSR, or the priority of the service with the highest priority corresponding to the low-priority BSR corresponding to one or more services with data. The priority of the business with the highest priority among the priorities.
  • the first threshold may also be a pre-configured value, a value configured by a network device, or a value determined by the terminal device itself.
  • the method also includes:
  • the terminal device sends a second BSR, and the second BSR includes buffer status information of services that do not meet the first condition. That is, the second BSR includes buffer status information of services whose priority is less than or equal to the first threshold.
  • the second BSR may be sent through the first uplink resource. Or, if there are no remaining resources in the first uplink resource, the second BSR may be sent through the second uplink resource.
  • the present application provides a method for reporting a buffer status report, which may be executed by a terminal device or a component of the terminal device (such as a chip system), or other components with terminal functions.
  • the method includes: the terminal device obtains the size of the first uplink resource, and based on the size of the first uplink resource, determines that the priority of the UL BSR is higher than the priority of the SL BSR, or determines that the priority of the SL BSR is higher than the priority of the UL BSR level.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the UL BSR, or the first The uplink resource size is greater than or equal to the UL BSR and the SL BSR including buffer status information of at least one SL LCG, or the first uplink resource size is greater than or equal to the UL BSR size, and the first uplink resource size is less than or equal to the SL BSR size
  • the first uplink resource size is greater than or equal to the UL BSR and the size of the SL BSR including the buffer status information of at least one SL LCG, and the first uplink resource size is less than or equal to the SL BSR size
  • the terminal device determines the priority of the UL BSR Higher priority than SL BSR.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the SL BSR, or the first The uplink resource size is greater than or equal to the size of the SL BSR and the UL BSR including the buffer status information of at least one UL LCG, or the first uplink resource size is greater than or equal to the SL BSR size, and the first uplink resource size is less than or equal to the UL BSR size Or, the size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR including the buffer status information of at least one UL LCG, and the size of the first uplink resource is less than or equal to the size of the UL BSR, and the terminal device determines the priority of the SL BSR Higher priority than UL BSR.
  • the method further includes: the terminal device obtains the first parameter of the SL BSR and the second parameter of the UL BSR.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or, the second parameter is the presence of uplink The priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services of the channel data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities of the side link service that triggers the SL BSR
  • the second parameter is the uplink service corresponding to the UL BSR that is triggered The priority of the uplink service with the highest priority among the priorities.
  • the terminal device determines that the priority of UL BSR is higher than the priority of SL BSR based on the size of the first uplink resource, or determines that the priority of SL BSR is higher than the priority of UL BSR, including: the terminal device is based on the size of the first uplink resource , The first parameter and the second parameter determine that the priority of the UL BSR is higher than the priority of the SL BSR, or it is determined that the priority of the SL BSR is higher than the priority of the UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, the first parameter and the second parameter, or determines that the priority of the SL BSR is higher than the UL
  • the priority of the BSR includes: the size of the first uplink resource is smaller than the size of the SL BSR and smaller than the size of the UL BSR, the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or Make sure that the priority of SL BSR is higher than that of UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, Or it is determined that the priority of SL BSR is higher than the priority of UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or determines that the priority of the SL BSR is higher than the priority of the UL BSR, including: If the first parameter of SL BSR is greater than the second parameter of UL BSR, the terminal device determines that the priority of SL BSR is higher than the priority of UL BSR; the first parameter of SL BSR is less than the second parameter of UL BSR, and the terminal device determines UL BSR The priority of is higher than the priority of SL BSR.
  • the embodiments of the present application provide a buffer status report reporting method, which is applied to a terminal device or a component of a terminal device (such as a chip system), or other components with terminal functions.
  • the method includes: the terminal device generates a first BSR, and sends the first BSR.
  • the first BSR includes buffer status information of services that meet the first condition; the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the first BSR does not include buffer status information of services that do not meet the first condition.
  • the first threshold includes any one of the following: a pre-configured value, or a value configured by a network device, or a service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR Or, the priority of the business with the highest priority among the priorities of one or more services that have data corresponding to the low-priority BSR; among them, the priority of UL BSR is higher than the priority of SL BSR, The low priority BSR is SL BSR; the priority of UL BSR is lower than the priority of SL BSR, and the low priority BSR is UL BSR.
  • the method further includes: the terminal device sends a second BSR, where the second BSR includes buffer status information of a service that does not meet the first condition.
  • an embodiment of the present application provides a communication device, which may be a terminal device or a component of a terminal device (such as a chip system), or other components with terminal functions.
  • the device includes: a processing module and a transceiver module.
  • the processing module is used to obtain the first parameter corresponding to the side link buffer status report SL BSR and the second parameter corresponding to the uplink buffer status report UL BSR, and determine the SL BSR according to the first parameter and the second parameter
  • the priority of is higher than the priority of UL BSR, or it is determined that the priority of UL BSR is higher than the priority of SL BSR.
  • the first parameter is related to the priority of the side link service with data
  • the second parameter is related to the priority of the uplink service with data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or ,
  • the second parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the side-link service includes one or more of the following: side-link QoS flow, side-link logical channel LCH, side-link data radio bearer DRB, side-link Logical channel group LCG, side link service target identifier, side link packet data unit session PDU session.
  • Uplink services include one or more of the following: uplink quality of service flow, uplink logical channel LCH, uplink data radio bearer DRB, uplink logical channel group LCG, uplink service target identifier, uplink Road packet data unit session.
  • the side link service is SL LCG
  • the first parameter is the priority of the SL LCG with the highest priority among the priorities corresponding to one or more SL LCGs that have side link data
  • the uplink service is UL LCG
  • the second parameter is the priority of the UL LCG with the highest priority among the priorities corresponding to one or more UL LCGs with uplink data.
  • the side link service is SL LCH
  • the first parameter is the priority of the SL LCH with the highest priority among the priorities corresponding to one or more SL LCHs with side link data
  • the uplink service is UL LCH
  • the second parameter is the priority of the UL LCH with the highest priority among the priorities corresponding to one or more UL LCHs with uplink data.
  • the processing module is used to determine that the priority of the SL BSR is higher than the priority of the UL BSR according to the first parameter and the second parameter, or to determine that the priority of the UL BSR is higher than the priority of the SL BSR Level, including: the first parameter is greater than the second parameter, it is used to determine that the priority of SL BSR is higher than the priority of UL BSR; the first parameter is smaller than the second parameter, and it is used to determine that the priority of UL BSR is higher than that of SLBSR priority.
  • the processing module is also used to generate a first BSR with a service that meets the first condition, and the first BSR includes buffer status information of the service that meets the first condition.
  • the transceiver module is used to send the first BSR.
  • the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the first BSR does not include buffer status information of services that do not meet the first condition.
  • the first threshold includes any one of the following: a pre-configured value, or a network configuration value, or the priority of the service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR , Or, the priority of the business with the highest priority among the priorities of one or more services that have data corresponding to the low-priority BSR, or the priority of the one or more services that have data corresponding to the low-priority BSR The priority of the business with the highest priority among the priorities.
  • the priority of UL BSR is higher than the priority of SL BSR, and the low priority BSR is SL BSR; the priority of UL BSR is lower than the priority of SL BSR, and the low priority BSR is UL BSR.
  • the transceiver module is also used to send a second BSR, and the second BSR includes buffer status information of services that do not meet the first condition.
  • the communication device of the fourth aspect may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction
  • the communication apparatus of the fourth aspect can perform the functions of the terminal device of the first aspect.
  • an embodiment of the present application provides a communication device, which may be a terminal device or a component of a terminal device (such as a chip system), or other components with terminal functions.
  • the device includes: a processing module and a transceiver module.
  • the processing module is used to obtain the size of the first uplink resource, and based on the size of the first uplink resource, determine that the priority of the UL BSR is higher than the priority of the SL BSR, or determine that the priority of the SL BSR is higher than the priority of the UL BSR level.
  • the processing module is configured to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the UL BSR , Or, the first uplink resource size is greater than or equal to the UL BSR and the size of the SL BSR including the buffer status information of at least one SL LCG, or the first uplink resource size is greater than or equal to the UL BSR size, and the first uplink resource size is less than Or equal to the SL BSR size, or the first uplink resource size is greater than or equal to the UL BSR and the size of the SL BSR including the buffer status information of at least one SL LCG, and the first uplink resource size is less than or equal to the SL BSR size, and the UL BSR is determined
  • the priority of is higher than the priority of SL BSR.
  • the processing module is configured to determine that the priority of the SL BSR is higher than the priority of the UL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the SL BSR Or, the size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR including the buffer status information of at least one UL LCG, or the size of the first uplink resource is greater than or equal to the size of the SL BSR, and the size of the first uplink resource is less than Or equal to the UL BSR size, or the first uplink resource size is greater than or equal to the SL BSR and the size of the UL BSR including the buffer status information of at least one UL LCG, and the first uplink resource size is less than or equal to the UL BSR size, determine the SL BSR The priority of is higher than the priority of UL BSR.
  • the processing module is also used to obtain the first parameter of the SL BSR and the second parameter of the UL BSR.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or, the second parameter is the presence of uplink The priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services of the channel data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities of the side link service that triggers the SL BSR
  • the second parameter is the uplink service corresponding to the UL BSR that is triggered The priority of the uplink service with the highest priority among the priorities.
  • the processing module is used to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, or to determine that the priority of the SL BSR is higher than the priority of the UL BSR, including: for the first uplink based The size of the resource, the first parameter, and the second parameter determine that the priority of the UL BSR is higher than the priority of the SL BSR, or it is determined that the priority of the SL BSR is higher than the priority of the UL BSR.
  • the processing module is used to determine the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, the first parameter and the second parameter, or determine the priority of the SL BSR Priority higher than UL BSR, including: for the first uplink resource size is smaller than the SL BSR size, and smaller than the UL BSR size, based on the first parameter and the second parameter, the priority of UL BSR is determined to be higher than the priority of SL BSR Or determine that the priority of SL BSR is higher than that of UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or determines The priority of SL BSR is higher than the priority of UL BSR.
  • the processing module is used to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or that the priority of the SL BSR is higher than the priority of the UL BSR , Including: the first parameter used for SL BSR is greater than the second parameter of UL BSR, then it is determined that the priority of SL BSR is higher than the priority of UL BSR; the first parameter of SL BSR is less than the second parameter of UL BSR, and it is determined that UL The priority of BSR is higher than the priority of SL BSR.
  • the communication device of the fifth aspect may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction
  • the communication apparatus of the fifth aspect can perform the functions of the terminal device of the second aspect described above.
  • an embodiment of the present application provides a communication device, which may be a terminal device or a component of a terminal device (such as a chip system), or other components with terminal functions.
  • the device includes: a processing module and a transceiver module.
  • the processing module is used to generate the first BSR.
  • the transceiver module is used to send the first BSR.
  • the first BSR includes buffer status information of services that meet the first condition; the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the first BSR does not include buffer status information of services that do not meet the first condition.
  • the first threshold includes any one of the following: a pre-configured value, or a value configured by a network device, or a service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR
  • the priority of the BSR or the priority of the business with the highest priority among the priorities of one or more services with data in the low-priority BSR; among them, the priority of the UL BSR is higher than the priority of the SL BSR, and the priority is lower
  • the priority BSR is SL BSR; the priority of UL BSR is lower than that of SL BSR, and the low priority BSR is UL BSR.
  • the transceiver module is also used to send a second BSR, and the second BSR includes buffer status information of services that do not meet the first condition.
  • the communication device of the sixth aspect may further include a storage module, and the storage module stores a program or an instruction.
  • the processing module executes the program or instruction
  • the communication apparatus of the sixth aspect can perform the functions of the terminal device of the third aspect.
  • the present application provides a communication device that has the function of implementing the buffer status report reporting method of any one of the first aspect, the second aspect, or the third aspect.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • a communication device including: a processor and a memory; the memory is used to store computer-executable instructions, and when the communication device is running, the processor executes the computer-executable instructions stored in the memory to enable the communication
  • the device executes the buffer status report reporting method of any one of the first aspect, the second aspect, or the third aspect described above.
  • a communication device including: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, execute any one of the first aspect, the second aspect, or the third aspect according to the instruction. The method of reporting the item's buffer status.
  • a computer-readable storage medium stores instructions that, when run on a computer, enable the computer to execute any of the first aspect, the second aspect, or the third aspect.
  • a method for reporting a buffer status report is provided.
  • a computer program product containing instructions which when running on a computer, enables the computer to execute the buffer status report reporting method of any one of the first aspect, the second aspect, or the third aspect.
  • a circuit system in a twelfth aspect, includes a processing circuit configured to execute the buffer status report reporting method according to any one of the first aspect, the second aspect, or the third aspect.
  • a chip in a thirteenth aspect, includes a processor, the processor is coupled with a memory, and the memory stores program instructions.
  • the program instructions stored in the memory are executed by the processor, the first aspect or the second aspect or the third aspect is implemented Any item of the buffer status report reporting method.
  • a chip system in a fourteenth aspect, includes a processor and an input/output port.
  • the processor is configured to implement the processing functions involved in the buffer status report reporting method of any one of the first to third aspects.
  • the input/output port is used to implement the transceiver function involved in the buffer status report reporting method of any one of the first aspect to the third aspect.
  • the chip system further includes a memory for storing program instructions and data that implement the functions involved in the buffer status report reporting method of any one of the first aspect to the third aspect.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a V2X communication scenario provided by an embodiment of the application
  • Figure 2 is a schematic diagram of uplink and side links provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of the architecture of a communication system provided by an embodiment of the application.
  • FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of the principle of comparing priorities provided by an embodiment of this application.
  • 6(a) to 6(c) are schematic flowcharts of a method for reporting a buffer status report according to an embodiment of the application;
  • FIG. 7 is a schematic diagram of the principle of comparing priorities provided by an embodiment of this application.
  • 8-9 are schematic flowcharts of a method for reporting a buffer status report according to an embodiment of the application.
  • 10(a) to 10(c) are schematic flowcharts of a method for reporting a buffer status report according to an embodiment of the application;
  • FIG. 11 is a schematic diagram of the principle of comparing priorities provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • Logical channel (logical channel, LCH): According to different services, the terminal may establish multiple logical channels. LCH is used to indicate a channel that carries data. According to its type, LCH can be divided into control channel (control channel) and traffic channel (traffic channel).
  • control channel control channel
  • traffic channel traffic channel
  • LCG Logical channel group
  • BSR MAC control element The BSR is carried in the UL MAC protocol data unit (protocol data unit, PDU), and the UL MAC PDU includes one or more BSR MAC CE. Specifically, on the PC5 interface, the UL MAC PDU includes one or more SL BSR MAC CEs, and on the Uu interface, the UL MAC PDU includes one or more UL BSR MAC CEs.
  • each Destination (abbreviated as DST) Index can have one or more LCG IDs, and multiple Destination Indexes can have the same LCG ID.
  • DST Destination
  • the combined use of Destination Index and LCG ID can uniquely represent LCG.
  • the terminal device can encapsulate the BSR MAC CE shown in Table 1 into UL MAC PDU, and send the UL MAC PDU to the network device, thereby reporting the total amount of buffered data of LCG1 (ie Buffer Size 1) to the network device. ) And the total amount of buffered data of LCG2 (ie Buffer Size 2).
  • the UL BSR MAC CE on the Uu interface and the SL BSR MAC CE on the PC5 interface may have different formats.
  • the UL BSR MAC CE on the Uu port has four formats:
  • ⁇ Short BSR format (fixed size), that is, Short BSR format
  • ⁇ Long BSR format (variable size), that is, Long BSR format
  • the SL BSR MAC CE on the PC5 interface has two formats:
  • Logical channel identification The BSR format, or BSR MAC CE format, is identified by the LCID in the subheader included in the UL MAC PDU. As a possible implementation, the LCID value and the meaning of different LCID values are shown in Table 2:
  • the BSR formats are short truncated BSR, long truncated BSR, short BSR, and long BSR formats.
  • each BSR MAC CE corresponds to an LCID, which is used to indicate the BSR format of the BSR MAC CE.
  • the BSR MAC CE shown in Table 1 corresponds to the LCID value of 111011, indicating that the BSR format of the BSR MAC CE is a short truncated format.
  • Pending refers to the state that is triggered but not sent. For example, pending data refers to data that has not been sent.
  • Suspended BSR refers to a BSR that has been triggered but has not been sent.
  • Suspended SR refers to an SR that is triggered but not sent.
  • Non-padding area cache status report (non-padding BSR): According to different trigger conditions, BSR can be divided into padding area cache status report (padding BSR) and non-padding area cache status report (non-padding BSR). For example, when the terminal equipment multiplexes all possible data and signaling in the multiplexing order, there are still surplus uplink resources, and the remaining resources are large enough to accommodate the BSR and its subheaders, then the BSR is triggered. This BSR is called padding BSR . When the terminal device generates data with a higher priority than the current data to be transmitted, the BSR is triggered. The BSR is called a non-padding BSR. The priority of the above data can be understood as the priority of the LCH that caches the data.
  • Priority sequence Generally, SL BSR MAC CE and UL BSR MAC CE have priority sequence in the process of multiplexing and encapsulating to form MAC PDU. Among them, if the priority of SL BSR MAC CE is higher than the priority of UL BSR MAC CE, the terminal device will preferentially encapsulate SL BSR MAC CE in MAC PDU, otherwise, if the priority of SL BSR MAC CE is lower than UL BSR MAC The priority of the CE, the terminal equipment preferentially encapsulates the UL BSR MAC CE in the MAC PDU.
  • QoS flow Quality of service flow
  • a certain level of transmission priority can be assigned to it to identify its relative importance and use the various types of data provided by the device.
  • a priority forwarding strategy, congestion avoidance and other mechanisms provide special transmission services for these data streams. Among them, such a type of data flow is called a QoS flow.
  • Radio bearers are classified into signaling radio bearer (SRB) and DRB according to the content of the bearer. Among them, DRB is used to carry user plane data. SRB is used to carry control plane data, that is, signaling.
  • SRB signaling radio bearer
  • Packet data unit session A terminal device can have multiple PDU Sessions (Protocol Data Unit Session, protocol data unit sessions), and one PDU Session can correspond to the multiple QoS Flows mentioned above. Multiple QoS flows corresponding to the same PDU Session can be mapped to the same DRB.
  • PDU Sessions Protocol Data Unit Session, protocol data unit sessions
  • Business target identification used to distinguish different businesses. For example, it can be the Destination Index shown in Table 1.
  • BSR, BSR, MAC, and CE may sometimes be mixed.
  • Cache status, cache status, cache information, and cache information are sometimes mixed.
  • the priority in the embodiment of the present application may use packet priority (prose per-packet priority, PPPP), priority level value, priority value, 5G service quality identifier (Fifth-generation QoS Identifier, 5QI, 5QI) , Other parameters reflecting the requirements of SL transmission quality are equivalently replaced.
  • PPPP packet priority
  • priority level value priority value
  • priority value priority value
  • 5G service quality identifier Fifth-generation QoS Identifier, 5QI, 5QI
  • Other parameters reflecting the requirements of SL transmission quality are equivalently replaced.
  • the priority level in this application can be replaced by PPPP.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems.
  • OFDMA orthogonal frequency-division multiple access
  • single carrier frequency-division multiple access single carrier frequency-division multiple access
  • SC-FDMA single carrier frequency-division multiple access
  • the term "system” can be used interchangeably with "network”.
  • the OFDMA system can implement wireless technologies such as evolved universal terrestrial radio access (E-UTRA) and ultra mobile broadband (UMB).
  • E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS).
  • the 3rd generation partnership project (3GPP) uses a new version of E-UTRA in LTE and various versions based on LTE evolution.
  • the 5G communication system is a next-generation communication system under study, and can also be called an NR system.
  • 5G communication systems include non-standalone (NSA) 5G mobile communication systems, standalone (standalone, SA) 5G mobile communication systems, or NSA’s 5G mobile communication systems and SA’s 5G mobile communication system.
  • NSA non-standalone
  • SA standalone
  • 5G mobile communication systems or SA’s 5G mobile communication systems
  • the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application.
  • the above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this, and the description is unified here, and the details are not repeated below.
  • first and second in the description of the application and the drawings are used to distinguish different objects or to distinguish different treatments of the same object, rather than describing a specific order of the objects.
  • At least one means one or more
  • Multiple means two or more.
  • A/B can indicate A or B.
  • the subscript sometimes as W 1 may form a clerical error at non-target as W1, while not emphasize the difference, to express their meaning is the same.
  • FIG. 3 is a schematic diagram of the architecture of a communication system to which the method for reporting a buffer status report according to an embodiment of the application is applicable.
  • the communication system includes one or more terminal devices, such as terminal device 1 to terminal device 7, and one or more network devices.
  • the above-mentioned terminal equipment and network equipment may communicate through a Uu port in uplink (UL) and/or downlink (downlink).
  • UL uplink
  • downlink downlink
  • the terminal device is the sender and the network device is the receiver
  • DL downlink
  • the network device is the sender
  • the terminal device is the receiver.
  • the above-mentioned different terminal devices may communicate through the PC5 port on the sidelink (SL).
  • SL sidelink
  • one terminal device is the sender
  • the other or more terminal devices are the receivers.
  • FIG. 3 only exemplarily shows signals between some terminals and signals between some terminals and network devices. There may also be sending and receiving signals between other terminals. There may also be sending and receiving signals between other terminals and network devices.
  • both UL and SL can include multiple standards, such as LTE and NR.
  • the following specific comparison between UL and SL and comparison between SL and SL are not limited to specific standards.
  • it can be NR UL and NR SL, or NR UL and LTE SL or LTE UL and NR SL.
  • the comparison of SL and SL is limited to the comparison of NR SL and LTE SL.
  • a terminal device when a terminal device has uplink data and sidelink data, it may trigger the terminal device to send UL BSR and SL BSR to the network device.
  • the terminal device needs to determine the priority of UL BSR and SL BSR Or, in other words, determine the priority of multiplexing/encapsulating UL BSR and SL BSR into the same MAC PDU.
  • the uplink resources are not enough to carry UL BSR MAC CE, UL BSR MAC CE sub-headers, SL BSR MAC CE, SL BSR MAC CE sub-headers; or, they are not enough to carry UL BSR MAC at the same time.
  • the terminal device needs to determine the priority of UL BSR and SL BSR, so as to determine whether to encapsulate UL BSR MAC CE and its sub-headers into UL MAC PUD first, or to prioritize SL BSR MAC CE and its sub-headers.
  • the header is encapsulated into UL MAC PDU.
  • a fixed priority sequence of UL BSR and SL BSR is specified, that is, it is stipulated that the priority of non-padding SL BSR in LTE is always higher than that of non-padding SL BSR.
  • the padding UL BSR has a low priority, that is, the priority of the UL BSR is always higher than the priority of the SL BSR.
  • the terminal device when there is a high-priority side-link service or side-link data that triggers SL BSR, and there is a low-priority uplink service or uplink data that triggers UL BSR, the terminal device always has priority in UL UL BSR MAC CE is encapsulated in MAC PDU.
  • the UL BSR triggered by the low-priority service preempts the resources of the SL BSR triggered by the high-priority service, and the SL BSR triggered by the high-priority side link service may be delayed in transmission.
  • high-priority side-link data may be delayed in transmission, that is, the transmission efficiency of high-priority side-link data is low.
  • the prior art also proposes a flexible priority scheme for UL BSR and SL BSR, which can set the priority of one or more LCHs that trigger SL BSR to have the highest priority (highest priority).
  • the priority of the LCH of the LCH priority is regarded as the priority of the SL BSR
  • the priority of the LCH with the highest priority among the priorities of one or more LCHs that trigger the UL BSR is regarded as the priority of the UL BSR.
  • the priority value of LCH1 is 7
  • the priority value of LCH2 is 2. Assume that the higher the priority value, the lower the priority.
  • the priority of LCH2 is higher than the priority of LCH1, and the priority of LCH2 can be regarded as the priority of SL BSR.
  • the priority value of LCH3 is 7
  • the priority value of LCH4 is 2
  • the priority value of LCH5 is 1
  • the priority of LCH5 is the highest
  • the priority of LCH5 can be regarded as the priority of UL BSR.
  • the terminal device compares the priority of the SL BSR (that is, the priority of LCH2, the value is 2) and the priority of the UL BSR (that is, the priority of LCH5, the value is 1) to determine that the priority of the UL BSR is higher. In this flexible priority mode, the priority results obtained are not accurate enough.
  • a black filled rectangular box indicates a logical channel with data
  • a blank rectangular box indicates a logical channel with no data.
  • T1 there is data to be sent in the logical channels with priorities 7, 8, and 10, which triggers SL BSR1.
  • the highest priority of these logical channels is 7, which can be regarded as SL BSR1 Priority.
  • T2 the logical channels with priorities 7, 8, 10, and 4 have data to be sent, which triggers SL BSR2.
  • the highest priority of these logical channels is 4, and SL BSR2 has priority.
  • the level is 4.
  • the priority of SL BSR3 is 2.
  • the terminal needs to send UL MAC PDU1 to the network device on the uplink grant resource 1 (UL grant1).
  • UL grant1 uplink grant resource 1
  • the terminal needs to compare the priority of the SL BSR and the UL BSR. Among them, the highest priority among the priorities corresponding to SL BSR1 to SL BSR3 is 2, and it is considered that the priority of SL BSR is 2. Similar to the above principle, the priority of UL BSR is 3.
  • the SL BSR has a higher priority, and the terminal encapsulates the SL BSR MAC CE and its sub-headers into UL MAC PDU1 first.
  • UL MAC PDU1 can carry other content
  • UL BSR MAC CE and its subheader are encapsulated into the UL MAC PDU1.
  • UL MAC PDU1 encapsulates SL BSR MAC CE in a truncated format.
  • the terminal device obtains the SL grant allocated by the network device, so that the terminal device can send some side link data on the SL grant, as shown in Figure 5, before the arrival at T6 , The side link data on the logical channels with priority values of 2, 7, and 8 have been sent.
  • the terminal device needs to compare the priority of the SL BSR and the UL BSR.
  • the terminal device needs to compare the priority of the SL BSR and the UL BSR.
  • the current BSR reporting mechanism if a UL MAC PDU is encapsulated with a truncated SL BSR MAC CE at a certain moment, the pending SL BSR cannot be cancelled before that moment, that is, the pending SL BSR will continue to be reserved. SL BSR suspended before the time.
  • the terminal device still obtains the triggered SL BSR1 ⁇ SL BSR3
  • the terminal device obtains the highest priority among the priorities corresponding to the LCH that triggers the UL BSR. In this way, the priority of SL BSR is still higher.
  • this method of comparing priorities easily causes the previously suspended SL BSR to continue to have a higher priority, and the terminal device is likely to continue to reuse the SL BSR with priority, but the SL BSR actually contains a lower priority SL
  • the buffer status information of the LCG or SL LCH causes a delay in reporting the UL BSR including the high-priority UL LCH or UL LCG buffer status information, which in turn causes the transmission delay of the uplink data, and the transmission efficiency of the uplink data is not high.
  • the flexible priority method can reduce the probability of always prioritizing UL BSR MAC CE encapsulation to a certain extent
  • SL BSR MAC CE when determining the priority of a certain BSR, such as SL BSR priority
  • SL BSR MAC CE is encapsulated in UL MAC PDU first.
  • the SL BSR MAC CE may include some buffer status information (such as buffer size) corresponding to high-priority side link services, and it may also include some buffer status information corresponding to low-priority side link services, and, The priority of these low-priority side-link services may be lower than the priority of some uplink services.
  • the buffer status information of some low-priority side uplink services may preempt the buffer status information of some high-priority uplink services, causing the buffer status information of high-priority uplink services to be delayed in transmission. Furthermore, the transmission of high-priority uplink data may be delayed.
  • the terminal device when determining the priority of UL BSR and SL BSR, does not regard the priority of the LCH with the highest priority among the priorities of the LCH that triggers the SL BSR as the priority of the SL BSR. , Nor does it regard the priority of the LCH with the highest priority among the priorities of the LCH that triggers the UL BSR as the priority of the UL BSR, but the priority corresponding to one or more side link services with data
  • the priority of the side-link service with the highest priority among them is regarded as the priority of SL BSR, and the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with data
  • the level is regarded as the priority of UL BSR.
  • the terminal device can determine the priority comparison result of the UL BSR and the SL BSR at the current time according to the data that actually exists at the current moment, and the obtained priority comparison result is more in line with service requirements.
  • the current time does not limit the specific time. For example, it can be the time when the priority of the UL BSR/SL BSR is judged, the time when the UL BSR is encapsulated, or the time when the uplink resource is received.
  • the terminal device determines the priority of the UL BSR and the SL BSR based on the size of the first uplink resource.
  • the terminal device generates a first BSR and sends the first BSR.
  • the first BSR includes buffer status information of services that meet the first condition.
  • the first condition is that the service priority is greater than or equal to the first threshold.
  • the BSR sent on a certain uplink resource may include the buffer status information of high-priority services and the buffer status information of low-priority services, and the buffer status information of low-priority services may occupy more resources.
  • the buffer status information of a service with a higher priority can be sent preferentially on uplink resources, reducing the probability that the buffer status information of a service with a lower priority occupies more resources.
  • the terminal device determines that a certain type of BSR needs to be reused in priority according to the above-mentioned method.
  • MAC CE can be implemented in one or more of the following ways: MAC CE pre-configured by the network equipment, or MAC CE dynamically configured by the network equipment through signaling, predefined by the protocol and manufactured in the terminal equipment Or the MAC CE that is written into the internal buffer of the terminal device when entering the network. This application does not specifically limit the specific implementation of "MAC CE”.
  • the aforementioned network device is a device that is located on the network side of the aforementioned communication system and has a wireless transceiving function, or a chip or chip system that can be installed in the device.
  • the network equipment includes but is not limited to: access points (AP) in wireless fidelity (WiFi) systems, such as home gateways, routers, servers, switches, bridges, etc., evolved node B (evolved) Node B, eNB), radio network controller (RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home Base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP) It can also be 5G, such as the gNB in the NR system, or the transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of
  • the above-mentioned terminal device may be a vehicle; it may also be an in-vehicle communication device or an in-vehicle terminal installed on a vehicle for assisting the driving of the vehicle, or a chip in the in-vehicle communication device or in-vehicle terminal.
  • the vehicle-mounted terminal may be a device used to implement wireless communication functions, such as a terminal or a chip that can be used in the terminal.
  • the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, and wireless communication in a 5G network or a future evolved PLMN.
  • UE user equipment
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices or wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial) Wireless terminal in control), wireless terminal in self-driving (self-driving), wireless terminal in remote medical (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in transportation safety (transportation safety) Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the vehicle-mounted terminal can be mobile or fixed.
  • FIG. 3 is only a simplified schematic diagram of an example for ease of understanding, and the communication system may also include other network devices and/or other terminal devices, which are not shown in FIG. 3.
  • the network device and the terminal device in the embodiment of the present application may also be referred to as a communication device.
  • the communication device may be a general-purpose device or a dedicated device, which is not specifically limited in the embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device 200 provided by an embodiment of this application.
  • the communication apparatus 200 may be a terminal device or a network device, or a chip applied to a terminal device or a network device, or other components, modules, subsystems, etc. having terminal functions or network device functions.
  • the communication device 200 may include a processor 201, a memory 202, and a transceiver 203. Among them, there is a signal connection between the processor 201, the memory 202, and the transceiver 203, for example, they can be connected through a communication bus.
  • the processor 201 is the control center of the communication device 200, and may be a processor or a collective name for multiple processing elements.
  • the processor 201 is one or more central processing units (CPU), or an application specific integrated circuit (ASIC), or is configured to implement one or more of the embodiments of the present application.
  • An integrated circuit for example: one or more microprocessors (digital signal processors, DSP), or one or more field programmable gate arrays (FPGA).
  • the processor 201 can execute various functions of the communication device 200 by running or executing a software program stored in the memory 202 and calling data stored in the memory 202.
  • the processor 201 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 4.
  • the communication device 200 may also include multiple processors, such as the processor 201 and the processor 204 shown in FIG. 4. Each of these processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • the processor here may refer to one or more communication devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the memory 202 can be a read-only memory (ROM) or other types of static storage communication devices that can store static information and instructions, a random access memory (RAM), or other types that can store information and instructions.
  • the type of dynamic storage communication equipment can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, Optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage communication devices, or can be used to carry or store desired program codes in the form of instructions or data structures and Any other medium that can be accessed by the computer, but not limited to this.
  • the memory 202 may exist independently, or may be integrated with the processor 201.
  • the memory 202 is used to store a software program for executing the solution of the present application, and the processor 201 controls the execution.
  • the processor 201 controls the execution.
  • the transceiver 203 is used for communication between the communication device 200 and other communication devices.
  • the transceiver 203 may include a receiving unit to implement a receiving function, and a sending unit to implement a sending function.
  • the structure of the communication device 200 shown in FIG. 4 does not constitute a limitation on the communication device.
  • the actual communication device may include more or less components than those shown in FIG. 4, or combine some components. , Or different component arrangements.
  • different side link services may correspond to different layer 1 target identifiers, and/or correspond to different layer 2 target identifiers (Destination Index), and may also correspond to the same layer 1 target identifiers, and / Or the same level 2 target ID.
  • Different side link services may correspond to different layer 1 target identifiers + source index pairs, and/or correspond to different layer 2 target identifiers + layer 2 source identifier groups.
  • Different side link services may correspond to the same layer 1 target ID + source ID group, and/or correspond to the same layer 2 target ID + layer 2 source ID group.
  • Fig. 6(a) is a first schematic flowchart of a method for reporting a buffer status report according to an embodiment of the application.
  • the buffer status report reporting method may be suitable for the terminal device shown in FIG. 3 to report the SL BSR and/or UL BSR to the network device.
  • the buffer status report reporting method includes the following steps:
  • the terminal device obtains the first parameter corresponding to the SL BSR and the second parameter corresponding to the UL BSR.
  • a parameter such as a priority for SL BSR MAC CE can be defined in advance, and the priority is used to indicate that the SL BSR MAC CE has a logical channel priority (logical channel priority).
  • prioritization, LCP Priority in the multiplexing process.
  • the priority may be defined as the same or different priorities corresponding to multiple SL BSRs that have been suspended, or the priority of the SL LCH/LCG that triggers multiple SL BSRs may be the same or different. In the same way, it is optional to define a priority for UL BSR MAC CE.
  • the priority is used to indicate the priority relationship of UL BSR MAC CE in the LCP multiplexing process, which corresponds to multiple suspended UL BSRs.
  • the priority, or the priority of the UL LCH/LCG that triggers multiple UL BSRs, may be the same or different. Or, the above-mentioned priority is related to PPPP or 5QI. Or, related to other parameters.
  • the priority is not defined in advance for SL BSR MAC CE and/or UL BSR MAC CE, and the priority corresponding to the first parameter and the second parameter are regarded as the priority of SL BSR and UL BSR, respectively Or, consider the priority corresponding to the first parameter and the second parameter as the priority of the SL BSR MAC CE and UL BSR MAC CE in the process of multiplexing and encapsulating the MAC PDU.
  • the priority of SL BSR MAC CE and/or UL BSR MAC CE is not defined in advance, and the sequence relationship between UL BSR MAC CE and SL BSR MAC CE in the LCP multiplexing encapsulation process (or Relative priority order), the first parameter related to SL BSR and the second parameter related to UL BSR are used for judgment.
  • the first parameter is related to the priority of the side link service with data
  • the second parameter is related to the priority of the uplink service with data.
  • the first parameter is the priority of the side link service having the highest priority among the priorities corresponding to one or more side link services for which side link data exists. and / or.
  • the second parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the first parameter is the priority of the SL LCH with the highest priority among the SL LCHs included in the SL LCG corresponding to the LCG ID included in the SL BSR MAC CE
  • the second parameter is UL The priority of the UL LCH with the highest priority among the UL LCHs included in the UL LCG corresponding to the LCG ID included in the BSR MAC CE.
  • each LCG corresponds to an indicator bit.
  • the indicator bit is used to indicate whether the LCG has a buffer size field in UL BSR MAC CE. For example, if The bit is 1, indicating that the LCG has a corresponding buffer size field in the UL BSR MAC CE.
  • the second parameter is the priority of the UL LCH with the highest priority among the UL LCH included in the UL LCH corresponding to the bit with the indicator bit of 1 in the UL BSR MAC CE, or the second parameter is the buffer status in the UL BSR MAC CE ( The priority of the UL LCH with the highest priority among the UL LCHs included in the UL LCG corresponding to the buffer size) field.
  • “Available” means that there is data to be transmitted, or available data, or valid data.
  • Side link services include one or more of the following: SL QoS flow, SL LCH, SL DRB, SL LCG, SL service target identifier (Destination Index), and SL PDU session.
  • the uplink service includes one or more of the following: UL QoS flow, UL LCH, UL DRB, UL LCG, UL service target identifier, and UL PDU session.
  • the side link service is SL LCH
  • the first parameter is the priority of the SL LCH with the highest priority among the priorities corresponding to one or more SL LCHs with side link data
  • the uplink service is UL LCH
  • the second parameter is the priority of the UL LCH with the highest priority among the priorities corresponding to one or more UL LCHs with uplink data.
  • the priority can be expressed by a numerical value. The larger the priority numerical value, the lower the priority, and vice versa, the smaller the numerical value is, the higher the priority is. Or, the larger the value, the higher the priority, and vice versa, the smaller the value, the lower the priority.
  • the embodiment of the present application does not limit the specific relationship between the priority value and the priority level.
  • priority can also be expressed by category.
  • the priority is divided into one or more categories, such as Class A (classification A) and Class B (classification B). Different categories have different priorities.
  • Class A classification A
  • Class B classification B
  • Different categories have different priorities.
  • the priority of Class A can be pre-defined or configured to be higher than Class B. Class, or Class B has higher priority than Class A.
  • the priority value is mainly used to indicate the priority level, and the larger the priority value is, the lower the priority is as an example to illustrate the technical solutions of the embodiments of the present application, and the description is unified here, and the details are not repeated below.
  • categories to indicate the level of priority or other ways to indicate the level of priority, is also applicable to the following embodiment schemes.
  • the priority values corresponding to the SL LCH with side link data are 4, 6, 10, and 9, respectively, and the SL LCH with a priority value of 4 has the highest priority.
  • the first parameter is the priority of the SL LCH (the priority value is 4).
  • the priority values corresponding to the UL LCH with uplink data are 3, 4, 5, and 6, respectively.
  • the UL LCH with a priority value of 3 has the highest priority
  • the second parameter is The priority of the UL LCH (the priority value is 3).
  • the second parameter may be used to indicate the priority of the UL BSR.
  • Fig. 7 as an example. Fig.
  • the priority values corresponding to the LCH with side link data are 2, 7, 8, 4, and 6 respectively. , 10.
  • the LCH with a priority value of 2 has the highest priority. Therefore, in this case, the priority corresponding to the LCH with the highest priority is used as the first parameter corresponding to the SL BSR.
  • the side link service is SL LCG
  • the first parameter is the SL LCG with the highest priority among the priorities of one or more SL LCGs with side link data (SL data).
  • the uplink service is UL LCG
  • the second parameter is the priority of the UL LCG with the highest priority among the priorities corresponding to one or more UL LCGs with uplink data (UL data) level.
  • the priority corresponding to the LCG refers to the priority of the LCH with the highest priority among the priorities corresponding to one or more LCHs included in the LCG.
  • the four SL and LCGs shown in Figure 7 all have side link data.
  • the priority of DST1 corresponding to LCG1 is 1, the priority of DST1 corresponding to LCG2 is 7, and the priority of DST2 corresponding to LCG1 is 4.
  • the priority of DST2 corresponding to LC12 is 9.
  • the priority corresponding to DST1 corresponding to LCG1 is the highest. Therefore, in this case, the priority corresponding to DST1 corresponding to LCG1 is used as the first parameter of SL BSR.
  • the side link service is SL LCG
  • the first parameter is SL BSR MAC SL corresponding to one or more LCG IDs included in the CE SL with the highest priority among the SL LCHs included in the LCG Priority of the LCH
  • the uplink service is UL LCG
  • the second parameter is UL BSR MAC CE in the UL LCH included in the UL LCG corresponding to one or more bits indicating the value "1" The priority of the UL LCH with the highest priority.
  • the priority corresponding to the LCG refers to the priority of the LCH having the highest priority among the priorities corresponding to one or more LCHs included in the LCG.
  • the complete SL BSR MAC CE when constructing MAC PDU2, the complete SL BSR MAC CE should contain the buffer status of LCG1 and LCG2 corresponding to DST2. Among all the SL LCHs contained in these two SL LCGs, the highest The priority of the priority LCH is 4, and the first parameter is 4. At the same time, the complete UL BSR MAC CE should contain the cache status of LCG1 and LCG3. Among all UL LCHs included in these two UL LCGs, the priority of the LCH with the highest priority is 3, and the first parameter is 3.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR according to the first parameter and the second parameter, or determines that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR; if the first parameter is less than or equal to the second parameter, the terminal device determines that the priority of the UL BSR is higher Priority in SL BSR.
  • the priority value of priority value 4 is lower than the priority value of priority value 3, that is, the priority of SL BSR is lower than UL
  • the priority of the BSR that is, when the UL grant size is smaller than the sum of the subheaders of UL BSR MAC CE, UL BSR MAC CE, SL BSR MAC CE, and SL BSR MAC CE, the terminal device will give priority to UL BSR
  • the subheaders of MAC CE and UL BSR MAC CE are encapsulated into UL MAC PDU. If there are remaining resources, SL BSR MAC CE is then encapsulated into UL MAC PDU, so as to request priority scheduling of uplink resources for transmitting uplink data.
  • the first parameter is a value of the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services for which side link data exists. and / or.
  • the second parameter is the value of the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the first parameter (priority value) of the SL BSR is greater than the second parameter of the UL BSR, indicating that the priority of the SL BSR is lower than the priority of the UL BSR.
  • the first parameter is the priority category of the side link service with the highest priority among the priorities corresponding to one or more side link services for which side link data exists. and / or.
  • the second parameter is the priority category of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the priority of SL BSR and the priority of UL BSR can be obtained according to the pre-defined or configuration.
  • the terminal device obtains the first parameter corresponding to the SL BSR and the second parameter corresponding to the UL BSR, and determines the priority of the UL BSR and the SL BSR according to the first parameter and the second parameter .
  • the first parameter is related to the priority of the side link service with side link data
  • the second parameter is related to the priority of the side link service with uplink data.
  • the terminal device may continue to prioritize encapsulation of SL BSR Compared with MAC CE or UL BSR MAC CE, and the transmission of uplink data or side link data is delayed, in the technical solution of the embodiment of the present application, because it is based on the side link data that actually exists
  • the priority of the road service and/or the priority of the uplink service with uplink data are used to determine the priority of the UL BSR and the SL BSR, and the obtained priority comparison result is more in line with service requirements. In this way, the terminal device can send high-priority uplink data or side-link data preferentially in the subsequent, so as to improve the transmission efficiency of the uplink data or the side-link data.
  • the buffer status report reporting method includes the following steps:
  • the terminal device obtains the third parameter corresponding to the SL BSR, the fourth parameter corresponding to the UL BSR, and/or the second threshold.
  • a priority is defined for UL BSR MAC CE, and the priority is used to indicate the priority relationship of UL BSR MAC CE in the LCP multiplexing process, and
  • the priority corresponding to multiple suspended UL BSRs, or the priority of the UL LCH/LCG that triggers multiple UL BSRs may be the same or different.
  • the priority is not defined for SL BSR MAC CE and/or UL BSR MAC CE, and the priority corresponding to the first parameter value and the second parameter value is regarded as the priority of SL BSR and UL BSR, respectively Or, regard the priority corresponding to the first parameter value and the second parameter value as the priority sequence of SL BSR MAC CE and UL BSR MAC CE in the process of multiplexing and encapsulating the MAC PDU.
  • the priority is not defined for SL BSR MAC CE and/or UL BSR MAC CE, and only when it is necessary to determine the sequence relationship (or relative) between UL BSR MAC CE and SL BSR MAC CE in the LCP multiplexing and encapsulation process.
  • the third parameter related to SL BSR and the fourth parameter related to UL BSR and/or the second threshold are used for judgment.
  • the third parameter is related to the priority of the side link service with data
  • the fourth parameter is related to the priority of the uplink service with data
  • the fourth parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data, or the fourth parameter is The priority of the UL LCH with the highest priority among the UL LCHs included in the UL LCG corresponding to the LCG ID included in the UL BSR MAC CE, or the fourth parameter is the bit indicating the value of "1" in the UL BSR MAC CE.
  • the priority of the UL LCH with the highest priority among the UL LCH included in the corresponding UL LCG, or the fourth parameter is the UL LCH included in the UL LCG corresponding to the buffer status field in the UL BSR MAC CE has the highest priority The priority of the UL LCH.
  • the third parameter is the number of side link services with priority greater than or equal to the fourth parameter in the side link services with side link data.
  • the foregoing second threshold value is a pre-configured value.
  • the second threshold is a value predefined by the protocol.
  • the second threshold is a value pre-configured in the terminal at the factory, and optionally, the value can be updated later.
  • the second threshold is a value configured by the network device.
  • the second threshold is the fourth parameter.
  • the network device configures a threshold parameter for each uplink service. If the fourth parameter is associated with a certain uplink service, the threshold parameter in the uplink service configuration is used to determine the SL BSR and UL The second threshold of the priority of the BSR.
  • SL LCHs with valid data are SL LCH1 to SL LCH8. Among them, the priority of UL LCH1 is 5 and the threshold parameter is 5; the priority of UL LCH2 is 4, the threshold parameter is 3, the priority of UL LCH2 is 7, and the threshold parameter is 2.
  • UL LCH2 is the priority of one or more uplink services with uplink data.
  • the UL LCH with the highest priority among the priorities corresponding to each UL LCH, the priority of UL LCH2 (the value is 4) is regarded as the fourth parameter, the threshold parameter associated with UL LCH2 is 3, and the second threshold is 3.
  • Side link services include one or more of the following: SL QoS flow, SL LCH, SL DRB, SL LCG, SL service target identifier (Destination Index), and SL PDU session.
  • the uplink service includes one or more of the following: UL QoS flow, UL LCH, UL DRB, UL LCG, UL service target identifier, and UL PDU session.
  • the side link service is SL LCH
  • the uplink service is UL LCH.
  • the third parameter is the number of SL LCHs where the priority of the SL LCH with side link data is greater than or equal to the fourth parameter.
  • the fourth parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • SL LCHs with valid data are SL LCH1 to SL LCH8, and the corresponding priorities are 1 to 8.
  • the UL LCH with valid data is: the priority of UL LCH1 is 5; the priority of UL LCH2 is 4, and the priority of UL LCH3 is 7.
  • the fourth parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data
  • UL LCH2 is the priority of one or more uplink services with uplink data.
  • the fourth parameter is 4, and the second threshold for network configuration is 3.
  • the third parameter is 4.
  • the side link service is SL LCG
  • the third parameter is one or more SL LCGs with side link data (SL data) whose corresponding priority is greater than or equal to the fourth parameter.
  • the uplink service is UL LCG
  • the fourth parameter is the priority of the UL LCG with the highest priority among the priorities corresponding to one or more UL LCGs with uplink data (UL data).
  • the priority corresponding to the LCG refers to the priority of the LCH with the highest priority among the priorities corresponding to one or more LCHs included in the LCG.
  • the SL LCGs with valid data are SL LCG1 to SL LCG8, and the corresponding priorities are 1 to 8, that is, the highest priority of the SL LCH included in the SL LCG is 1 to 8, respectively.
  • the UL LCG with valid data is: the priority corresponding to UL LCG1 is 2; the priority corresponding to UL LCG2 is 4, and the priority corresponding to UL LCG3 is 7. If the fourth parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data, the fourth parameter is 2, and the second threshold for network configuration is 5. Then the number of SL LCHs with the priority of the SL LCH with side link data greater than or equal to 2 is 2, that is, the third parameter is 2.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR according to the third parameter and the second threshold, or determines that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the terminal device determines that the priority of SL BSR is higher than the priority of UL BSR; if the third parameter is less than the second threshold, the terminal device determines that the priority of UL BSR is high Priority in SL BSR.
  • the SL LCH with valid data is SL LCH1 to SL LCH8, the corresponding priority is 1 to 8.
  • the UL LCH with valid data is: the priority of UL LCH1 is 4; the priority of UL LCH2 is 5, and the priority of UL LCH2 is 7.
  • the fourth parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data
  • UL LCH1 is the priority of one or more uplink services with uplink data.
  • the fourth parameter is 4, and the second threshold for network configuration is 3.
  • the number of SL LCHs with the priority of the SL LCH with side link data greater than or equal to 4 is 4, that is, the third parameter is 4.
  • the terminal device determines that the SL BSR has a higher priority than the UL BSR. That is to say, when the UL grant size is smaller than the sum of the sub-headers of UL BSR MAC CE, UL BSR MAC CE, SL BSR MAC CE and SL BSR MAC CE, the terminal device prioritizes SL BSR MAC CE and SL BSR The subheader of the MAC CE is encapsulated into the UL MAC PDU. If there are remaining resources, the UL BSR MAC CE is then encapsulated into the UL MAC PDU so as to request priority scheduling of uplink resources for transmitting uplink data.
  • the terminal device obtains the third parameter corresponding to the SL BSR, the fourth parameter corresponding to the UL BSR, and the second threshold, and determines the UL BSR according to the third parameter, the fourth parameter, and the second threshold.
  • SL BSR priority is related to the priority and quantity of the side link service with side link data
  • the fourth parameter is related to the priority of the side link service with uplink data.
  • the terminal device may continue to prioritize encapsulation of SL BSR Compared with MAC CE or UL BSR MAC CE, the transmission of uplink data or side link data is delayed.
  • the side link service based on the actual side link data
  • the priority of UL BSR and SL BSR, and/or the priority of uplink services with uplink data and further restrict the number of side link services that meet the conditions to determine the priority of UL BSR and SL BSR,
  • the priority comparison result is more in line with business needs. In this way, the terminal device can send high-priority uplink data or side-link data preferentially in the subsequent, so as to improve the transmission efficiency of the uplink data or the side-link data.
  • the buffer status report reporting method includes the following steps:
  • the terminal device obtains the fifth parameter corresponding to the SL BSR, the sixth parameter corresponding to the UL BSR, and/or the third threshold.
  • the fifth parameter is related to the priority of the side link service with data
  • the sixth parameter is related to the priority of the uplink service with data
  • the fifth parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services that have side link data, or the first
  • the fifth parameter is the priority of the SL LCH with the highest priority among the SL LCH included in the SL LCH corresponding to the LCG ID included in the SL BSR MAC CE, or the fifth parameter is the SL BSR MAC CE indicating the value is "1" ”Corresponds to the priority of the SL LCH with the highest priority among the SL LCH included in the SL LCG, or the fifth parameter is the SL LCH included in the SL LCH corresponding to the buffer status field in the SL BSR MAC CE.
  • the priority of the highest priority SL LCH is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services that have side link data
  • the first is the priority of the SL LCH with the highest priority among the SL LCH included in the SL LCH corresponding to the LCG ID included in the
  • the sixth parameter is the number of uplink services with a priority greater than or equal to the fifth parameter among the uplink services with uplink data.
  • the aforementioned third threshold value is a pre-configured value.
  • the third threshold is a value predefined by the protocol.
  • the third threshold is a value pre-configured in the terminal at the factory, and optionally, the value can be updated later.
  • the third threshold is a value configured by the network device.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR according to the sixth parameter and the third threshold, or determines that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the terminal device determines that the priority of SL BSR is lower than the priority of UL BSR; if the sixth parameter is less than the third threshold, the terminal device determines that the priority of UL BSR is low Priority in SL BSR.
  • the embodiment of the present application also provides a method for reporting a buffer status report. As shown in FIG. 8, the method includes the following steps:
  • the terminal device obtains the size of the first uplink resource.
  • the first uplink resource size may be represented by the first uplink resource size, or the first uplink resource size may refer to the number of bits of the first uplink resource, or the first uplink resource size may refer to the remaining bits of the first uplink resource Alternatively, the size of the first uplink resource may refer to the number of bits in the padding area.
  • the embodiment of the present application does not limit the specific representation of the size of the first resource.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, or determines that the priority of the UL BSR is lower than the priority of the SL BSR.
  • the terminal device may determine the priority of the UL BSR and the priority of the SL BSR based on the size of the first uplink resource and/or the size of the UL BSR and/or the size of the SL BSR.
  • the uplink resource size is sufficient to carry a certain complete BSR, or when the first resource size is greater than or equal to a certain BSR size, the complete BSR is preferentially encapsulated in the UL MAC PDU on the first uplink resource.
  • the size of the BSR can be represented by BSR size, or the size of BSR can be represented by the size of BSR MAC CE, or the size of BSR can be represented by the number of bits occupied by BSR MAC CE; or, the above-mentioned first uplink resource size can refer to the padding area (padding) the number of bits.
  • the BSR size mentioned in the present invention may be the size of the BSR MAC CE and its subheader, where the BSR may be a long format BSR, a short format BSR, or a truncated format BSR.
  • Case 1 The size of the first uplink resource is greater than or equal to the size of the UL BSR, and it is determined that the priority of the UL BSR is higher than the priority of the SL BSR.
  • the terminal device preferentially multiplexes the UL BSR on the first uplink resource.
  • the SL BSR is then reused.
  • Preferential multiplexing of UL BSR can be understood as the priority of UL BSR in the process of multiplexing and encapsulating MAC PDUs than SL BSR; or, "Preferential multiplexing of UL BSR, and then multiplexing “SL BSR” can be understood as the priority of UL BSR in the process of multiplexing and encapsulation is higher than SL BSR.
  • the optional subsequent reuse of SL BSR can be understood as: after UL BSR is multiplexed first, if the first uplink resource is left and is sufficient to carry the complete or partial SL BSR, then the SL BSR is reused.
  • the size of the first uplink resource is greater than or equal to the size of the UL BSR, which means that the size of the first uplink resource is greater than or equal to the size of the resources required by the complete UL BSR.
  • the complete UL BSR may include the buffer status information of one or more LCGs that currently have data.
  • the format of the complete UL BSR can be short format, or long format, or short truncated format, or long truncated format.
  • the LCGs that currently have data are LCG1 and LCG2
  • the UL BSR MAC CE corresponding to the complete UL BSR includes information indicating that the buffer size field and the buffer size of LCG1 and LCG1 exist, such as indicating that LCG1 and LCG2 are in UL
  • the subsequent fields of the UL BSR MAC CE have the Buffer Size 1 and Buffer Size 2 fields of LCG1 and LCG2.
  • Case 2 The size of the first uplink resource is greater than or equal to the size of the UL BSR, and the size of the first uplink resource is less than or equal to the size of the SL BSR, the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR. That is, when the first uplink resource is sufficient to carry a complete UL BSR but not enough to carry a complete SL BSR, the terminal device preferentially multiplexes the UL BSR on the first uplink resource, and optionally, reuses the SL BSR.
  • the size of the first uplink resource can be compared with the size of the UL BSR first. Once the first uplink resource is enough to carry the UL BSR, it will not continue to consider whether the first uplink resource is sufficient to carry the SL BSR. , And send the UL BSR preferentially on the first uplink resource directly. Only if the size of the first uplink resource is not enough to carry the UL BSR, can it continue to determine whether the first uplink resource is sufficient to carry the SL BSR.
  • the size of the first uplink resource is greater than or equal to the size of the UL BSR and the SL BSR containing the buffer status information of at least one SL LCG, and the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR. In other words, the terminal device preferentially multiplexes the UL BSR on the first uplink resource, and then multiplexes the buffer status information of at least one SL LCG. In other words, if the first uplink resource is sufficient to carry the complete UL BSR and the SL BSR including the buffer status information of at least one SL LCG, then the complete UL BSR and the SL including the buffer status information of at least one SL LCG are sent on the first uplink resource. BSR.
  • the terminal device preferentially multiplexes the UL BSR on the first uplink resource, and then reuses the SL BSR on the remaining uplink resources as much as possible according to the size of the remaining uplink resources and the number of SL LCGs with data to be transmitted Buffer status information of one or more SLs contained in the LCG.
  • Case 4 The size of the first uplink resource is greater than or equal to the size of the UL BSR and the SL BSR containing the buffer status information of at least one SL LCG, and the size of the first uplink resource is less than or equal to the size of the SL BSR, the terminal device determines the UL BSR The priority is higher than the priority of SL BSR. In other words, the terminal device preferentially multiplexes the UL BSR on the first uplink resource, and then multiplexes the SL BSR containing the buffer status information of at least one SL LCG.
  • the terminal device preferentially multiplexes the UL BSR on the first uplink resource, and then reuses the SL BSR on the remaining uplink resources as much as possible according to the size of the remaining uplink resources and the number of SL LCGs with data to be transmitted Buffer status information of one or more SLs contained in the LCG.
  • Case 5 The size of the first uplink resource is greater than or equal to the size of the SL BSR, and the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR, and reuses the SL BSR on the first uplink resource.
  • the size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR containing the buffer status information of at least one UL LCG, and the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR. In other words, the terminal device preferentially multiplexes the SL BSR on the first uplink resource, and then multiplexes the UL BSR containing the buffer status information of at least one UL LCG.
  • Case 7 The size of the first uplink resource is greater than or equal to the size of the SL BSR, and the size of the first uplink resource is less than or equal to the size of the UL BSR, the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR. In other words, the terminal device preferentially multiplexes the SL BSR on the first uplink resource, and then multiplexes the UL BSR containing the buffer status information of at least one UL LCG.
  • Case 8 The size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR containing the buffer status information of at least one UL LCG, and the size of the first uplink resource is less than or equal to the size of the UL BSR, the terminal device determines the priority of the SL BSR The priority is higher than the priority of UL BSR. In other words, the terminal device preferentially multiplexes the SL BSR on the first uplink resource, and then multiplexes the UL BSR containing the buffer status information of at least one UL LCG.
  • case 4 to case 8 can be referred to case 1 to case 3, which will not be repeated here.
  • Case 9 The size of the first uplink resource is smaller than the UL BSR, and the size of the first uplink resource is smaller than the size of the SL BSR.
  • the terminal device determines that the priority of the SL BSR is higher than the priority of the UL BSR. In other words, the terminal device preferentially multiplexes the SL BSR on the first uplink resource.
  • the terminal device reuses one or more SL LCG buffers contained in the SL BSR on the remaining uplink resources as much as possible according to the size of the remaining first uplink resource and the number of SL LCGs with data to be transmitted. status information.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR. In other words, the terminal equipment preferentially multiplexes the UL BSR on the first uplink resource.
  • the terminal adopts the method of FIG. 6(a) or FIG. 6(b) or FIG. 6(c) to determine the priority of the SL BSR and UL BSR.
  • the terminal device may determine the priority of the UL BSR and the SL BSR based on the first parameter corresponding to the UL BSR and the second parameter corresponding to the SL BSR.
  • a method for reporting a buffer status report is also provided.
  • the first uplink resource size, the first parameter, and the second parameter can be combined to determine the priority of the UL BSR and the SL BSR.
  • the method includes the following steps:
  • the terminal device obtains the first parameter corresponding to the SL BSR and the second parameter corresponding to the UL BSR.
  • the first parameter and the second parameter may be the first parameter and the second parameter in the technical solution corresponding to FIG. 6(a), respectively. That is, the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or the second parameter is the presence of uplink The priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services of the channel data.
  • the first parameter and the second parameter may also be parameters used to indicate priority in the prior art.
  • the embodiment of the present application does not limit the specific manner in which the terminal device obtains the priority.
  • the first parameter is the priority of the side link service with the highest priority among the priorities of the side link service that triggers the SL BSR
  • the second parameter is the trigger UL BSR The priority of the uplink service with the highest priority among the priority corresponding to the uplink service.
  • the priority of the LCH with the highest priority (highest LCH priority) among the priorities of one or more LCHs that trigger the SL BSR as the first parameter of the SL BSR
  • one or more LCHs that trigger the UL BSR The priority of the LCH with the highest priority among the corresponding priorities is regarded as the second parameter of the UL BSR.
  • S902 The terminal device obtains the size of the first uplink resource.
  • the order of S901 and S902 can be interchanged, and can also be performed at the same time, that is, the execution order of S901 and S902 is not limited.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, the first parameter and the second parameter, or determines that the priority of the SL BSR is higher than the priority of the UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or Make sure that the priority of SL BSR is higher than that of UL BSR.
  • the size of the first uplink resource is greater than or equal to the size of the SL BSR, and the size of the first uplink resource is greater than or equal to the size of the UL BSR, including the case where the size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR, that is, the first uplink resource
  • the terminal device determines the UL BSR based on the first parameter and the second parameter The priority of is higher than the priority of SL BSR, or it is determined that the priority of SL BSR is higher than the priority of UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter Or determine that the priority of SL BSR is higher than that of UL BSR.
  • the priority of the SL BSR and the UL BSR can be compared according to the solution in FIG. 8.
  • the terminal device determines that the priority of UL BSR is higher than SL BSR; and/or, the first uplink resource is sufficient to carry UL BSR and includes a SL LCG
  • the terminal device determines that the UL BSR has a higher priority than the SL BSR; or, in other cases, the terminal device can also combine the second parameter of the UL BSR and the first parameter of the SL BSR.
  • the first uplink resource is not enough to carry a complete SL BSR, and the first uplink resource is not enough to carry a complete UL BSR, or the first uplink resource is sufficient to carry a complete SL BSR or a complete UL BSR.
  • the size of the first uplink resource determines which BSR has the higher priority
  • the second parameter of the UL BSR and the first parameter of the SL BSR can be combined to determine which BSR has the higher priority.
  • the priority of SL BSR is higher than the priority of UL BSR; the first parameter of SL BSR is less than or equal to the second parameter of UL BSR, then it is determined The priority of UL BSR is higher than the priority of SL BSR.
  • the embodiment of the present application also provides a communication method.
  • the method includes the following steps:
  • the terminal device determines that the priority of the SL BSR is higher than that of the UL BSR.
  • the method for determining the priority may be the method corresponding to FIG. 6(a), FIG. 6(b), FIG. 6(c), FIG. 8, and FIG. 9 respectively.
  • the terminal device determines the order of encapsulating UL BSR and SL BSR into MAC PDU based on the size of the first uplink resource, UL BSR size and /SL BSR size, that is, multiplexing UL BSR first, or multiplexing SL BSR first.
  • the terminal device determines to preferentially encapsulate the UL BSR into the MAC PDU, and if the first uplink resource is left, reuse the SL BSR; or, if the first uplink resource If the size is greater than or equal to the size of the UL BSR and the SL BSR containing the buffer status information of an SL LCG, the terminal device determines to encapsulate the UL BSR into the MAC PDU first. If there are resources remaining, the SL BSR is reused; otherwise, the SL BSR is reused.
  • the terminal device determines to encapsulate the SL BSR into the MAC PDU.
  • the SL BSR reports as much side link buffer status information as possible. For example, according to the size of the first uplink resource and/or the SL LCG with data, as many as possible to report the target identifier and/or the buffer status information of the SL LCG.
  • the technical solutions of the embodiments of the present application are not limited to this.
  • the embodiment of the present application also provides a method for reporting a buffer status report.
  • the method includes the following steps:
  • the first BSR includes buffer status information of services that meet the first condition.
  • the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the foregoing first threshold value is a pre-configured value.
  • the first threshold is a value predefined by the protocol.
  • the first threshold is a value pre-configured in the terminal at the factory.
  • the value may be updated later.
  • the first threshold is a value configured by the network device.
  • the first threshold is the second parameter in the technical solution shown in FIG. 6(a).
  • the way of comparing service priorities can be according to the prior art, or according to the technical solution corresponding to Fig. 6(a) or Fig. 6(b) or Fig. 6(c), or using other methods in the embodiments of this application.
  • the method used to compare priorities can be according to the prior art, or according to the technical solution corresponding to Fig. 6(a) or Fig. 6(b) or Fig. 6(c), or using other methods in the embodiments of
  • the first BSR does not include buffer status information of services that do not meet the first condition. That is, the first BSR only includes buffer status information of services that meet the first condition.
  • the service that satisfies the first condition may be a side link service.
  • the first BSR includes buffer status information of the side-link service whose priority is greater than or equal to the first threshold.
  • the service that satisfies the first condition may be an uplink service.
  • the first BSR includes buffer status information of uplink services whose priority is greater than or equal to the first threshold.
  • the services that meet the first condition may be side link services and uplink services.
  • the first BSR includes buffer status information of uplink services and side link services with service priorities greater than or equal to the first threshold.
  • the services include only side link services.
  • the uplink service is an uplink logical channel
  • the side link service is a side link logical channel.
  • the technical solution corresponding to Figure 6(a) is used to compare the priority of the business. If the first threshold is 4, the LCH with data is black filled and the priority values are 2, 7, 8, 4, and 4 respectively. 6.
  • the SL LCH that satisfies the first condition is the SL LCH indicated by the arrow in the side link logical channel group in FIG. 11, or the SL LCH that satisfies the first condition is the SL LCH in the side link logical channel group in FIG. 11
  • the services may include side link services and uplink services.
  • the uplink service is an uplink logical channel
  • the side link service is a side link logical channel.
  • the technical solution corresponding to Figure 6(a) is used to compare the priority of the business. If the first threshold is 4, the LCH with data is black filled and the priority values are 2, 7, 8, 4, and 4 respectively.
  • SL LCH of 6 and 10 and UL LCH with priority values of 3, 4, 5, and 6, respectively.
  • the priority of the first SL LCH in the SL LCG1 and the priority of the third UL LCH in the UL LCG1 corresponding to DST1 are greater than or equal to the first threshold. That is, the LCH that satisfies the first condition is the LCH indicated by the arrow in FIG. 11.
  • the services may include side link services and uplink services.
  • the uplink service is an uplink logical channel group
  • the side-link service is a side-link logical channel group.
  • the priority value of LCG1 corresponding to DST1 is 1.
  • the priority value of LCG2 corresponding to DST1 is 7
  • the priority value of LCG1 corresponding to DST2 is 4,
  • the priority value of LCG2 corresponding to DST2 is 9.
  • the priority value of UL LCG1 is 1, and the priority value of LCG1 corresponding to DST4 is 4. That is, the LCGs whose LCG priority is greater than or equal to the first threshold are the 4 LCGs shown by the dashed box.
  • the first threshold may also be a value determined by the terminal device based on some parameters. For example, the terminal device determines the first threshold based on the size of the first uplink resource. Exemplarily, if the first uplink resource is sufficient to carry the buffer status information of 4 LCGs, as shown in FIG. 11, the terminal device may compare the priorities of the 6 LCGs with data, where the priority values of these LCGs are respectively It is 1, 7, 4, 9, 1, 4. Then the terminal device may set the first threshold to 4 to ensure that the number of LCGs with a priority greater than the first threshold is less than or equal to 5. The first uplink resource is sufficient to carry the buffer status information of these LCGs.
  • the terminal device can compare the priorities of LCHs with data, where, as shown in FIG. 11, the priority values of these LCHs are respectively 2, 7, 8, 4, 6, 10, 3, 4, 5, 6. Then the terminal device may set the first threshold to 4 to ensure that the number of LCGs with a priority greater than the first threshold is less than or equal to 5, so that the first uplink resource is sufficient to carry the buffer status information of these LCGs.
  • the service that meets the first condition is a side link service or an uplink service.
  • the first threshold may be related to the priority of UL BSR and SL BSR. Specifically, when the priority of the UL BSR is higher than the priority of the SL BSR, the service that meets the first condition refers to the uplink service whose service priority is greater than or equal to the first threshold. When the priority of the UL BSR is lower than the priority of the SL BSR, the service that meets the first condition refers to the side link service whose service priority is greater than or equal to the first threshold.
  • Figure 6(a) or Figure 6(b) or Figure 6(c) or other corresponding technical solutions in the embodiments of this application can be used to compare the priority of UL BSR and SL BSR, or the priority of UL BSR and SL BSR can be compared according to the prior art.
  • SL Priority of BSR can be used to compare the priority of UL BSR and SL BSR, or the priority of UL BSR and SL BSR can be compared according to the prior art.
  • the high-priority BSR can be truncated. That is, the number of LCG buffer status information included in the high-priority BSR is limited.
  • the first threshold may be the priority of the service with the highest priority among the priorities corresponding to the service that triggers the low-priority BSR, or one or more of the presence data of the low-priority BSR The priority of the business with the highest priority among the priorities of the business.
  • the first threshold may also be a pre-configured value, a value configured by a network device, or a value determined by the terminal device itself.
  • the priority of UL BSR is higher than the priority of SL BSR, and the low priority BSR is SL BSR; the priority of UL BSR is lower than the priority of SL BSR, and the low priority BSR is UL BSR.
  • the first threshold is the low-priority BSR, that is, the priority of the LCH with the highest priority among the priorities of the LCH with the data in the UL BSR, as an example, in Figure 11, there is data
  • the UL LCH is filled with black.
  • the third LCH of UL LCG1 has the highest priority, and the priority of this LCH (the priority value is 3) is regarded as the first threshold.
  • the LCH that meets the first condition refers to the SL LCH with a priority greater than or equal to 3, that is, the SL LCH with a priority value of 2 shown in FIG. 11.
  • the LCG that meets the first condition refers to the SL LCG where the SL LCH with a priority greater than or equal to 3 is located, that is, the SL LCG1 corresponding to DST1 shown in FIG. 11.
  • the first threshold is the low-priority BSR, that is, the priority of the LCG with the highest priority among the priorities of the LCG with pending data in the UL BSR, as an example, in Figure 11,
  • the priority of UL LCG1 (the value is 1) is greater than the priority of DST4's LCG1 (the value is 4), then the priority of UL LCG1 (the value is 1) ) Is regarded as the first threshold.
  • the LCG that meets the first condition refers to the SL LCG with a priority greater than or equal to 1, that is, the SL LCG1 corresponding to DST1 shown in FIG. 11.
  • the terminal device sends the first BSR.
  • the terminal device sending the first BSR may be specifically implemented as: the terminal device sends the first BSR on the first uplink resource.
  • the terminal device determines that there is an LCH that meets the first condition after judging.
  • Figure 11 is still used as an example, and combined with the above example, the terminal device encapsulates the LCH that meets the first condition in the first BSR.
  • the LCGs to which they belong that is, the buffer status information of the LCGs to which the 4 LCHs indicated by the arrows belong (the 4 LCGs shown by the dashed box).
  • These LCGs can include either SL LCG, UL LCG, or only SL LCG , Or, include only UL LCG, and send the first BSR.
  • the terminal device determines that there is an LCG that meets the first condition after judging.
  • Figure 11 is still used as an example, and combined with the above examples, the terminal device encapsulates the LCG that meets the first condition in the first BSR. , That is, the buffer status information of the 4 LCGs shown in the dashed box, and the first BSR is sent.
  • the third BSR includes buffer status information of some services that do not meet the first condition.
  • the third BSR includes buffer status information of some services whose priority is less than the first threshold.
  • the priority of the side link service is: SL LCG1 corresponds to a priority of 5
  • SL LCG2 corresponds to a priority of 6
  • the uplink service priority is: UL LCG1
  • the corresponding priority is 5, and the corresponding priority of UL LCG2 is 7, then there is no service that meets the first condition, and the terminal device generates a third BSR, which includes the buffer status information of the above four LCGs.
  • the third BSR includes buffer status information in the low-priority BSR.
  • the priority of side link services are: SL LCG1 corresponds to priority 5, SL LCG2 corresponds to priority 6, and uplink service
  • the priorities are: UL LCG1 has a priority of 1, and UL LCG2 has a priority of 7.
  • the terminal device If the first threshold is the priority of the uplink service with the highest priority among the priorities of the uplink service, That is, the first threshold is 1, and because the priority corresponding to SL and LCG is less than the first threshold, there is no side link service that meets the first condition, and the terminal device generates a third BSR, which includes a low priority BSR, that is, the buffer status information of the two LCGs in the UL BSR, that is, UL LCG1 and UL LCG2.
  • S1004 and S1005 are not steps executed after S1003, but are independent of steps other than S1001, S1002, and S1003.
  • the SL BSR including the buffer status information of the SL LCG as much as possible is sent on the first uplink resource.
  • the SLBSR triggered by low-priority services may occupy most of the resources in the first uplink resource, and the first uplink resource cannot carry the UL BSR triggered by the high-priority service at the same time, which causes the transmission of the UL BSR to be delayed and thus the priority Higher uplink data may be delayed in transmission.
  • the terminal device can send the buffer status information of the LCG to which the LCH with the higher service priority belongs, or the buffer status information of the LCG with the higher service priority, on the first uplink resource. It can be UL LCG or SL BSR. In other words, the terminal device can preferentially send the BSR corresponding to the high-priority service. In this way, the network device preferentially allocates resources to data with a higher service priority, so that the terminal device can preferentially transmit data with a higher priority on the allocated resources. Exemplarily, in FIG.
  • the terminal device is in the first uplink resource
  • the upload includes as much SL and LCG buffer status information as possible.
  • the priority of SL LCG2 (value 7) corresponding to DST1 shown in Figure 11 is lower than the priority of UL LCG1 (value 3) that has not been reported, resulting in BSR preemption including low priority service buffer status information including high priority
  • the BSR resources of the high-priority service buffer status information, and the high-priority service buffer status information cannot be sent preferentially.
  • the terminal device reports the buffer status information of the LCG whose service priority is greater than or equal to the first threshold, or reports the buffer status information of the LCG to which the LCH belongs to which the service priority is greater than or equal to the first threshold, so that BSR triggered by high-priority services can be sent first.
  • the terminal device determines whether there is an LCH or LCG of a high priority BSR that meets the first condition. Taking the high priority BSR as an SL BSR as an example, the terminal device determines whether there is an SL that meets the first condition. For the SL LCH or SL LCG of the BSR, Figure 11 is still used as an example. In combination with the above example, the terminal device encapsulates an LCG that meets the first condition in the first BSR, that is, the buffer status information of SL LCG1 corresponding to DST1 shown in Figure 11.
  • the terminal device can only report the buffer status information of the high priority SL LCG through the first uplink resource, instead of reporting the buffer status information of the low priority SL LCG, avoiding the low priority SL LCG buffer status information occupying the high priority UL LCG Resources for buffering status information. It can reduce the probability of delayed transmission of BSR triggered by high-priority services to improve data transmission efficiency.
  • the first BSR includes buffer status information of services that do not meet the first condition. That is, the first BSR not only includes buffer status information of services that meet the first condition, but may also include buffer status information of services that do not meet the first condition.
  • the terminal device sends and generates the first BSR, which may be specifically implemented as: the terminal device multiplexes the first BSR on the first uplink resource according to the size of the first uplink resource and the size of the low priority BSR.
  • the terminal device determines that there is an LCH that meets the first condition after judging, and when generating the first BSR MAC CE, it determines the first BSR according to the size of the first uplink resource and the size of the low priority BSR The number of cached information contained in the LCG. For example, the terminal device encapsulates the buffer status information of the LCGs to which the LCHs that meet the first condition belong to in the first BSR.
  • the buffer status information is The size of the first uplink resource is greater than the size of the buffer status information of the LCG to which the LCHs that meet the first condition belong respectively plus the size of the low-priority BSR, then the terminal device continues to follow the priority order (descending or ascending) corresponding to the LCG, and continues
  • the first BSR includes the buffer status information of the LCG to which the LCH that does not meet the first condition belongs.
  • the terminal equipment reuses a low-priority BSR.
  • the terminal device multiplexes the second BSR.
  • the terminal device may also send buffer status information of other LCGs on the first uplink resource. For example, the terminal device sends a second BSR, and the second BSR includes service buffer status information that does not meet the first condition. Specifically, the second BSR includes buffer status information of services whose service priority is less than or equal to the first threshold. If there are no remaining resources in the first uplink resource, or the remaining resources are insufficient to carry the second BSR, the second BSR may be sent through the second uplink resource.
  • the format of the first BSR is indicated by the first LCID
  • the format of the second BSR is indicated by the second LCID.
  • the first LCID may be different from the second LCID.
  • the format of the first BSR is, for example, but not limited to, truncated format, short format, or long format
  • the format of the second BSR for example, but not limited to, truncated format, or long format, or short format.
  • the truncation format can be a long truncation format or a short truncation format.
  • the embodiment of the present application also provides a method for reporting a buffer status report.
  • the method includes the following steps:
  • the terminal device determines that the priority of the SL BSR is higher than that of the UL BSR.
  • the method for determining the priority may be a method corresponding to FIG. 6(a), FIG. 6(b), FIG. 6(c), or FIG. 8, or FIG. 9.
  • the terminal device judges whether there is a service that meets the first condition.
  • the terminal device There is a service that meets the first condition, and the terminal device generates/multiplexes the first BSR on the first uplink resource.
  • the first BSR includes the buffer status information of the SL and LCG. That is, generating/multiplexing the first BSR on the first uplink resource here refers to multiplexing a high-priority SL BSR on the first uplink resource.
  • S1104 Multiplexing the UL BSR according to the size of the remaining resources in the first uplink resource and the size of the UL BSR.
  • the remaining resources in the first uplink resource are sufficient to accommodate the UL BSR, and the terminal device multiplexes the UL BSR.
  • the remaining resources are not enough to accommodate the UL BSR, and the terminal equipment only reuses the high-priority SL BSR.
  • the SL BSR contains as much buffer status information of side link services as possible in the order of service priority, until the buffer status information of all services that need to be included is included, or the first uplink resource has no remaining, two Only one condition is satisfied.
  • the priority of the second BSR may be the highest priority among the LCHs included in the LCG included in the second BSR. Priority of LCH, terminal equipment multiplexing data and/or other signaling;
  • a second BSR is generated, where the second BSR includes as much cache information of services that do not meet the first condition as much as possible.
  • the first BSR includes not only the buffer status information of the services that meet the first condition, but also the buffer status information of the services that do not meet the first condition, that is, as many as possible in the first BSR in the order of priority
  • the buffer status information of the service is included locally, until all the buffer status information of the services that need to be included are included, or there is no uplink resource remaining, and only one of the two conditions is satisfied. That is, the content of the second BSR can be included in the first BSR.
  • the terminal device continues to include valid data in the first BSR and the priority corresponding to the LCH/LCG is lower than The first threshold and/or the BS information of the LCH/LCH with valid data.
  • the SL BSR when the priority of the SL BSR is higher than the priority of the UL BSR, the SL BSR includes the BSR information of the LCH/LCG with the priority higher than the first threshold (for example, the priority of the UL BSR). If the size of the remaining uplink resources is sufficient to accommodate the UL BSR, the UL BSR is reused. When there are still remaining resources, if there are remaining SL LCG/LCH, as much as possible, continue to include SL LCH/LCG BS information with priority lower than the first threshold (such as the priority of UL BSR) in the SL BSR.
  • the first threshold for example, the priority of the UL BSR
  • Fig. 12 is a second structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device can be applied to the communication system shown in Fig. 3, and execute Fig. 6(a) and/or Fig. 6(b) and/or Fig. 6(c) and/or Fig. 8 and/or Fig. 9 and/or Or the function of the terminal device in the buffer status report reporting method shown in FIG. 10(a) and/or FIG. 10(b) and/or FIG. 10(c).
  • FIG. 12 only shows the main components of the communication device.
  • the communication device 600 includes: a processing module 601 and a transceiver module 602.
  • the communication device 600 can be applied to the communication system shown in FIG. 3 to perform the function of the terminal device in the buffer status report reporting method shown in FIG. 6(a).
  • the processing module is used to obtain the first parameter corresponding to the side link buffer status report SL BSR and the second parameter corresponding to the uplink buffer status report UL BSR, and determine the SL BSR according to the first parameter and the second parameter
  • the priority of is higher than the priority of UL BSR, or it is determined that the priority of UL BSR is higher than the priority of SL BSR.
  • the first parameter is related to the priority of the side link service with data
  • the second parameter is related to the priority of the uplink service with data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or ,
  • the second parameter is the priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services with uplink data.
  • the side-link service includes one or more of the following: side-link QoS flow, side-link logical channel LCH, side-link data radio bearer DRB, side-link Logical channel group LCG, side link service target identifier, side link packet data unit session PDU session.
  • Uplink services include one or more of the following: uplink quality of service flow, uplink logical channel LCH, uplink data radio bearer DRB, uplink logical channel group LCG, uplink service target identifier, uplink Road packet data unit session.
  • the side link service is SL LCG
  • the first parameter is the priority of the SL LCG with the highest priority among the priorities corresponding to one or more SL LCGs that have side link data
  • the uplink service is UL LCG
  • the second parameter is the priority of the UL LCG with the highest priority among the priorities corresponding to one or more UL LCGs with uplink data.
  • the side link service is SL LCH
  • the first parameter is the priority of the SL LCH with the highest priority among the priorities corresponding to one or more SL LCHs with side link data
  • the uplink service is UL LCH
  • the second parameter is the priority of the UL LCH with the highest priority among the priorities corresponding to one or more UL LCHs with uplink data.
  • the processing module is used to determine that the priority of the SL BSR is higher than the priority of the UL BSR according to the first parameter and the second parameter, or to determine that the priority of the UL BSR is higher than the priority of the SL BSR Level, including: the first parameter is greater than the second parameter, it is used to determine that the priority of SL BSR is higher than the priority of UL BSR; the first parameter is smaller than the second parameter, and it is used to determine that the priority of UL BSR is higher than that of SLBSR priority.
  • the processing module is also used to generate a first BSR with a service that meets the first condition, and the first BSR includes buffer status information of the service that meets the first condition.
  • the transceiver module is used to send the first BSR.
  • the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the first BSR does not include buffer status information of services that do not meet the first condition.
  • the first threshold includes any one of the following: a pre-configured value, or a network configuration value, or the priority of the service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR , Or, the priority of the business with the highest priority among the priorities of one or more services corresponding to the presence of data in the low-priority BSR, or the priority corresponding to one or more services of the low-priority BSR with the presence of data The priority of the business with the highest priority in the.
  • the priority of UL BSR is higher than the priority of SL BSR, and the low priority BSR is SL BSR; the priority of UL BSR is lower than the priority of SL BSR, and the low priority BSR is UL BSR.
  • the transceiver module is also used to send a second BSR, and the second BSR includes buffer status information of services that do not meet the first condition.
  • the communication device 600 may also be applied to the communication system shown in FIG. 3 to perform the function of the terminal device in the buffer status report reporting method shown in FIG. 9 and/or FIG. 8.
  • the processing module is configured to obtain the size of the first uplink resource, and based on the size of the first uplink resource, determine that the priority of the UL BSR is higher than the priority of the SL BSR, or determine that the priority of the SL BSR is higher than the priority of the UL BSR.
  • the processing module is configured to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the UL BSR , Or, the first uplink resource size is greater than or equal to the UL BSR and the size of the SL BSR including the buffer status information of at least one SL LCG, or the first uplink resource size is greater than or equal to the UL BSR size, and the first uplink resource size is less than Or equal to the SL BSR size, or the first uplink resource size is greater than or equal to the UL BSR and the size of the SL BSR including the buffer status information of at least one SL LCG, and the first uplink resource size is less than or equal to the SL BSR size, and the UL BSR is determined
  • the priority of is higher than the priority of SL BSR.
  • the processing module is configured to determine that the priority of the SL BSR is higher than the priority of the UL BSR based on the size of the first uplink resource, including: the size of the first uplink resource is greater than or equal to the size of the SL BSR Or, the size of the first uplink resource is greater than or equal to the size of the SL BSR and the UL BSR including the buffer status information of at least one UL LCG, or the size of the first uplink resource is greater than or equal to the size of the SL BSR, and the size of the first uplink resource is less than Or equal to the UL BSR size, or the first uplink resource size is greater than or equal to the SL BSR and the size of the UL BSR including the buffer status information of at least one UL LCG, and the first uplink resource size is less than or equal to the UL BSR size, determine the SL BSR The priority of is higher than the priority of UL BSR.
  • the processing module is also used to obtain the first parameter of the SL BSR and the second parameter of the UL BSR.
  • the first parameter is the priority of the side link service with the highest priority among the priorities corresponding to one or more side link services with side link data; and/or, the second parameter is the presence of uplink The priority of the uplink service with the highest priority among the priorities corresponding to one or more uplink services of the channel data.
  • the first parameter is the priority of the side link service with the highest priority among the priorities of the side link service that triggers the SL BSR
  • the second parameter is the uplink service corresponding to the UL BSR that is triggered The priority of the uplink service with the highest priority among the priorities.
  • the processing module is used to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, or to determine that the priority of the SL BSR is higher than the priority of the UL BSR, including: for the first uplink based The size of the resource, the first parameter, and the second parameter determine that the priority of the UL BSR is higher than the priority of the SL BSR, or it is determined that the priority of the SL BSR is higher than the priority of the UL BSR.
  • the processing module is used to determine the priority of the UL BSR is higher than the priority of the SL BSR based on the size of the first uplink resource, the first parameter and the second parameter, or determine the priority of the SL BSR Priority higher than UL BSR, including: for the first uplink resource size is smaller than the SL BSR size, and smaller than the UL BSR size, based on the first parameter and the second parameter, the priority of UL BSR is determined to be higher than the priority of SL BSR Or determine that the priority of SL BSR is higher than that of UL BSR.
  • the terminal device determines that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or determines The priority of SL BSR is higher than the priority of UL BSR.
  • the processing module is used to determine that the priority of the UL BSR is higher than the priority of the SL BSR based on the first parameter and the second parameter, or that the priority of the SL BSR is higher than the priority of the UL BSR , Including: the first parameter used for SL BSR is greater than the second parameter of UL BSR, then it is determined that the priority of SL BSR is higher than the priority of UL BSR; the first parameter of SL BSR is less than the second parameter of UL BSR, and it is determined that UL The priority of BSR is higher than the priority of SL BSR.
  • the communication device 600 can also be applied to the communication system shown in FIG. 3 to perform the function of the terminal device in the buffer status report reporting method shown in FIG. 10(b).
  • the processing module is used to generate the first BSR.
  • the transceiver module is used to send the first BSR.
  • the first BSR includes buffer status information of services that meet the first condition; the first condition is that the priority of the service is greater than or equal to the first threshold.
  • the first BSR does not include buffer status information of services that do not meet the first condition.
  • the first threshold includes any one of the following: a pre-configured value, or a value configured by a network device, or a service with the highest priority among the priority corresponding to the service that triggers the low-priority BSR
  • the priority of the BSR or the priority of the business with the highest priority among the priorities of one or more services with data in the low-priority BSR; among them, the priority of the UL BSR is higher than the priority of the SL BSR, and the priority is lower
  • the priority BSR is SL BSR; the priority of UL BSR is lower than that of SL BSR, and the low priority BSR is UL BSR.
  • the transceiver module is also used to send a second BSR, and the second BSR includes buffer status information of services that do not meet the first condition.
  • the communication device 600 in FIG. 12 may further include a storage module, and the storage module stores programs or instructions.
  • the processing module executes the program or instruction
  • the communication device 600 can execute the function of the terminal device in any one of the above-mentioned buffer status report reporting methods.
  • the communication device 600 may be a terminal device, a chip or a chip system provided in the terminal device, or other types of components with terminal functions, which are not limited in this application.
  • the processing module may be located in the processor shown in FIG. 4, or include the processor and other necessary components.
  • the transceiver module may be the transceiver 203 shown in FIG. 4, or other transceiver circuits.
  • the storage module may be the memory 202 shown in FIG. 4.
  • the embodiment of the present application provides a communication device.
  • the communication device is used to implement the foregoing various buffer status report reporting methods.
  • the communication device may be the terminal device in the buffer status report reporting method of the foregoing method embodiment, such as a vehicle-mounted communication device, or a device containing the foregoing terminal device, such as various types of vehicles, or a device or device included in the foregoing terminal device.
  • the communication device includes a module, unit, or means corresponding to the foregoing buffer status report reporting method, and the module, unit, or means can be implemented by hardware, software, or hardware execution of corresponding software.
  • the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
  • An embodiment of the present application provides a chip system that includes a processor and an input/output port.
  • the processor is used to implement the processing functions involved in the buffer status report reporting method of the foregoing method embodiment, and the input/output port is used to implement the foregoing The receiving and sending functions involved in the buffer status report reporting method of the method embodiment.
  • the chip system further includes a memory for storing program instructions and data that implement the functions involved in the buffer status report reporting method of the first aspect to the third aspect.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the embodiment of the present application provides a computer-readable storage medium, including: the computer-readable storage medium stores computer instructions; when the computer instructions are run on a computer, the computer is caused to execute the buffer status report of the foregoing method embodiment method.
  • the embodiment of the present application provides a computer program product containing instructions, including a computer program or instruction, when the computer program or instruction runs on a computer, the computer executes the buffer status report reporting method of the foregoing method embodiment.
  • the processor in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), Electrically erasable programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the foregoing embodiments may be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • computer instructions or computer programs When computer instructions or computer programs are loaded or executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions can be transmitted from a website, computer, server, or data center through a cable (such as Infrared, wireless, microwave, etc.) to transmit to another website, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • the following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请提供一种缓冲状态报告上报方法及通信装置，可应用于涉及车辆驾驶的系统，比如自动驾驶系统或V2X系统。该方法包括：终端设备获取侧行链路缓存状态报告SL BSR对应的第一参数和上行链路缓存状态报告UL BSR对应的第二参数；根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。第一参数与存在数据的侧行链路业务的优先级相关，第二参数与存在数据的上行链路业务的优先级相关。本申请可以解决MAC PDU可能优先复用低优先级业务触发的BSR，导致高优先级业务触发的BSR被延迟发送的问题，能够综合考虑UL和SL两个链路上的实际数据，从而提高终端设备的整体通信效率。

Description

缓冲状态报告上报方法及通信装置 技术领域
本申请涉及通信技术领域，尤其涉及缓冲状态报告上报方法及通信装置。
背景技术
车联网，即车辆物联网，其以行驶中的车辆为信息感知对象，借助新一代信息通信技术，实现车与X(即车与车、人、路、服务平台)之间的网络连接，能够提升车辆整体的智能驾驶水平，为用户提供安全、舒适、智能、高效的驾驶感受与交通服务，同时提高交通运行效率，提升社会交通服务的智能化水平。其中，作为一种新的车联网方案，车与任何事物通信(vehicle to everything，V2X)，是指通过装载在车上的传感器、车载终端等提供车辆信息，并通过各种通信技术实现车与车(vehicle to vehicle,V2V)、车与人(vehicle to pedestrian，V2P)、车与路边基础设施(vehicle to infrastructure，V2I)、车与网络的通信(vehicle to network，V2N)之间进行相互通信。示例性的，这些通信场景可参见图1。
在V2X中有两大空中通信接口，即PC5接口和Uu接口。其中，PC5接口主要用于终端之间直接通信，Uu接口主要用于终端与网络之间通信。在Uu接口上，终端可以通过如图2所示的上行链路(uplink，UL)向基站发送上行链路数据。在终端发送上行链路数据之前，终端需通过UL向基站发送UL缓冲状态报告(buffer status report，BSR)，该UL BSR用于指示终端的上行buffer中存在多少待发送数据，以便于基站基于该UL BSR为该终端分配用于传输上行链路数据(UL data)的上行资源(UL grant)。在PC5接口上，终端之间可以通过图2所示的侧行链路(sidelink，SL)直接通信。在一种可能的实现方式中，终端之间通过SL直接通信之前，终端需通过如图2所示的UL向基站发送SL BSR，该SL BSR用于指示终端的侧行buffer中存在多少待发送数据，以便于基站基于该SL BSR为该终端分配用于传输侧行链路数据(SL data)的侧行资源(SL grant)。
目前，在终端同时触发UL BSR和SL BSR的场景中，如何提升发送上行链路数据和侧行链路数据的效率，还未存在有效的解决方案。
发明内容
本申请实施例提供一种缓冲状态报告上报方法及装置，以提升上行链路数据和/或侧行链路数据的传输效率。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，本申请实施例提供一种缓冲状态报告上报方法，该方法应用于终端设备或终端设备的组件(比如芯片系统)，或者其他具有终端功能的组件。该方法包括：终端设备获取侧行链路缓存状态报告SL BSR对应的第一参数和上行链路缓存状态报告UL BSR对应的第二参数，并根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。其中，第一参数与存在数据的侧行链路业务的优先级相关，第二参数与存在数据的上行链路业务的优先级相 关。或者说，第一参数由存在数据的侧行链路业务对应的优先级确定，第二参数由存在数据的上行链路业务的优先级确定。作为一种可能的实现方式，可以将存在数据的一个或多个侧行链路业务分别对应的优先级中某一优先级(比如优先级中具有最高优先级的侧行链路业务的优先级)作为第一参数。将存在数据的一个或多个上行链路业务分别对应的优先级中某一优先级(比如最高优先级)作为第二参数。
与现有技术中通过比较触发UL BSR和SL BSR的LCH对应的优先级中具有最高优先级的LCH的优先级，以确定UL BSR和SL BSR的优先级，导致终端设备可能持续优先封装SL BSR媒体接入控制层控制单元(media access control control element，MAC CE)或UL BSR MAC CE，进而上行链路数据或侧行链路数据的传输被延迟相比，本申请实施例的技术方案中，由于是基于实际存在的侧行链路数据的侧行链路业务的优先级，和/或存在上行链路数据的上行链路业务的优先级，来确定UL BSR和SL BSR的优先级，得到的优先级比较结果更契合业务需求。以便于终端设备后续能够优先发送高优先级的上行链路数据或侧行链路数据，提升上行链路数据或侧行链路数据的发送效率。
在一种可能的设计中，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
在一种可能的设计中，侧行链路业务包括以下一个或多个：侧行链路服务质量QoS流、侧行链路逻辑信道LCH、侧行链路数据无线承载DRB、侧行链路逻辑信道组LCG、侧行链路业务目标标识、侧行链路分组数据单元会话PDU session。
上行链路业务包括以下一个或多个：上行链路服务质量流、上行链路逻辑信道LCH、上行链路数据无线承载DRB、上行链路逻辑信道组LCG、上行链路业务目标标识、上行链路分组数据单元会话。
在一种可能的设计中，侧行链路业务为SL LCG，第一参数为存在侧行链路数据的一个或多个SL LCG对应的优先级中具有最高优先级的SL LCG的优先级；和/或，上行链路业务为UL LCG，第二参数为存在上行链路数据的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。
在一种可能的设计中，侧行链路业务为SL LCH，第一参数为存在侧行链路数据的一个或多个SL LCH对应的优先级中具有最高优先级的SL LCH的优先级；和/或上行链路业务为UL LCH，第二参数为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH的优先级。
在一种可能的设计中，终端设备根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级，包括：
第一参数大于第二参数，则终端设备确定SL BSR的优先级高于UL BSR的优先级；第一参数小于第二参数，则终端设备确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，方法还包括：
存在满足第一条件的业务，终端设备生成第一BSR，第一BSR包括满足第一条件的业务的缓冲状态信息；
终端设备发送第一BSR；
其中，第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，终端设备在第一上行资源上发送第一BSR。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。也就是说，第一BSR仅包括满足第一条件的业务的缓冲状态信息。即仅包括业务的优先级大于或等于第一阈值的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任一种：预配置的数值，或者网络配置的数值，或者触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级。作为一种可能的实现方式，第一阈值还可以是由终端设备基于一些参数自行确定的数值，比如，终端设备基于第一上行资源大小确定第一阈值。
其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
当满足第一条件的业务既可以包括侧行链路业务，又可以包括上行链路业务。上行链路业务为上行链路逻辑信道，侧行链路业务为侧行链路逻辑信道。以图11为例，采用图6（a）对应的技术方案比较业务的优先级，若第一阈值为4，存在数据的LCH是黑色填充的优先级数值分别为2、7、8、4、6、10的SL LCH，以及优先级数值分别为3、4、5、6的UL LCH。其中，DST1对应的SL LCG1中的第一个SL LCH的优先级、UL LCG1中的第三个UL LCH的优先级大于或等于第一阈值。即，满足第一条件的LCH为图11中箭头所指示的LCH。
当满足第一条件的业务既可以包括侧行链路业务，又可以包括上行链路业务。上行链路业务为上行链路逻辑信道组，侧行链路业务为侧行链路逻辑信道组。以图11为例，按照图6（a）对应技术方案比较业务优先级，若第一阈值为4，图11中，存在数据的LCG有6个。其中，DST1对应的LCG1的优先级数值是1。同理，DST1对应的LCG2的优先级数值是7，DST2对应的LCG1的优先级数值是4，DST2对应的LCG2的优先级数值是9。DST3对应的LCG1的优先级数值是1，DST4对应的LCG1的优先级数值是4。即，LCG优先级大于或等于第一阈值的LCG为虚线框示出的4个LCG。
作为一种可能的实现方式，满足第一条件的业务是侧行链路业务，或者上行链路业务。这种情况下，第一阈值可以与UL BSR和SL BSR的优先级有关。具体的，当UL BSR的优先级高于SL BSR的优先级，满足第一条件的业务，指的是业务优先级大于或等于第一阈值的上行链路业务。当UL BSR的优先级低于SL BSR的优先级，满足第一条件的业务，指的是业务优先级大于或等于第一阈值的侧行链路业务。这里，可以采用图6（a）或图6（b）或图6（c）对应技术方案比较UL BSR和SL BSR的优先级，也可以按照现有技术比较UL BSR和SL BSR的优先级。
这种情况下，在终端设备确定UL BSR和SL BSR的优先级的基础上，可以对高优先级BSR进行截断操作。即限制高优先级BSR中包括的LCG缓冲状态信息的数目。这种情况下，第一阈值可以是触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级。当然，第一阈值还可以是预配置数值，网络设备配置的数值，或者终端设备自行确定的数值。
在一种可能的设计中，方法还包括：
终端设备发送第二BSR，第二BSR包括不满足第一条件的业务的缓冲状态信息。即，第二BSR包括优先级小于或等于第一阈值的业务的缓冲状态信息。终端设备在第一上行资源上发送第一BSR的基础上，若第一上行资源还有剩余资源，则该第二BSR可以通过第一上行资源发送。或者，若第一上行资源中没有剩余资源，可以通过第二上行资源发送第二BSR。
第二方面，本申请提供一种缓冲状态报告上报方法，该方法可以由终端设备或终端设备的组件(比如芯片系统)，或者具有终端功能的其他组件执行。该方法包括：终端设备获取第一上行资源的大小，并基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，终端设备基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，包括：第一上行资源大小大于或等于UL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，或者，第一上行资源大小大于或等于UL BSR大小，且第一上行资源大小小于或等于SL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，且第一上行资源大小小于或等于SL BSR大小，终端设备确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，终端设备基于第一上行资源的大小，确定SL BSR的优先级高于UL BSR的优先级，包括：第一上行资源大小大于或等于SL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，或者，第一上行资源大小大于或等于SL BSR大小，且第一上行资源大小小于或等于UL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，且第一上行资源大小小于或等于UL BSR大小，终端设备确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，方法还包括：终端设备获取SL BSR的第一参数和UL BSR的第二参数。
第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
或者，第一参数为触发SL BSR的侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级，和/或第二参数为触发UL BSR的上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
终端设备基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：终端设备基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，终端设备基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：第一上行资源大小小于SL BSR大小，且小于UL BSR大小，则终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确 定SL BSR的优先级高于UL BSR的优先级。或者，第一上行资源大小大于或等于SL BSR大小，且大于或等于UL BSR大小，则终端设备基于第一参数和第二参数，终端设备确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：SL BSR的第一参数大于UL BSR的第二参数，则终端设备确定SL BSR的优先级高于UL BSR的优先级；SL BSR的第一参数小于UL BSR的第二参数，终端设备确定UL BSR的优先级高于SL BSR的优先级。
第三方面，本申请实施例提供一种缓冲状态报告上报方法，该方法应用于终端设备或终端设备的组件(比如芯片系统)，或者其他具有终端功能的组件。该方法包括：终端设备生成第一BSR，并发送第一BSR。其中，第一BSR包括满足第一条件的业务的缓冲状态信息；第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任意一种：预配置的数值，或者，网络设备配置的数值，或者，触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级；其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
在一种可能的设计中，方法还包括：终端设备发送第二BSR，第二BSR包括不满足第一条件的业务的缓冲状态信息。
第四方面，本申请实施例提供一种通信装置，该装置可以为终端设备或终端设备的组件(比如芯片系统)，或者其他具有终端功能的组件。该装置包括：处理模块和收发模块。其中，处理模块，用于获取侧行链路缓存状态报告SL BSR对应的第一参数和上行链路缓存状态报告UL BSR对应的第二参数，并根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。第一参数与存在数据的侧行链路业务的优先级相关，第二参数与存在数据的上行链路业务的优先级相关。
在一种可能的设计中，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
在一种可能的设计中，侧行链路业务包括以下一个或多个：侧行链路服务质量QoS流、侧行链路逻辑信道LCH、侧行链路数据无线承载DRB、侧行链路逻辑信道组LCG、侧行链路业务目标标识、侧行链路分组数据单元会话PDU session。
上行链路业务包括以下一个或多个：上行链路服务质量流、上行链路逻辑信道LCH、上行链路数据无线承载DRB、上行链路逻辑信道组LCG、上行链路业务目标标识、上行链路分组数据单元会话。
在一种可能的设计中，侧行链路业务为SL LCG，第一参数为存在侧行链路数据的一个 或多个SL LCG对应的优先级中具有最高优先级的SL LCG的优先级；和/或，上行链路业务为UL LCG，第二参数为存在上行链路数据的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。
在一种可能的设计中，侧行链路业务为SL LCH，第一参数为存在侧行链路数据的一个或多个SL LCH对应的优先级中具有最高优先级的SL LCH的优先级；和/或上行链路业务为UL LCH，第二参数为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH的优先级。
在一种可能的设计中，处理模块，用于根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级，包括：第一参数大于第二参数，则用于确定SL BSR的优先级高于UL BSR的优先级；第一参数小于第二参数，用于确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，处理模块，还用于存在满足第一条件的业务，生成第一BSR，第一BSR包括满足第一条件的业务的缓冲状态信息。
收发模块，用于发送第一BSR。
其中，第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任一种：预配置的数值，或者网络配置的数值，或者触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级。
其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
在一种可能的设计中，收发模块，还用于发送第二BSR，第二BSR包括不满足第一条件的业务的缓冲状态信息。
可选地，第四方面的通信装置还可以包括存储模块，该存储模块存储有程序或指令。当处理模块执行该程序或指令时，使得第四方面的通信装置可以执行上述第一方面的终端设备的功能。
第五方面，本申请实施例提供一种通信装置，该装置可以为终端设备或终端设备的组件(比如芯片系统)，或者其他具有终端功能的组件。该装置包括：处理模块和收发模块。
其中，处理模块，用于获取第一上行资源的大小，基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，包括：用于第一上行资源大小大于或等于UL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，或者，第一上行资源大小大于或等于UL BSR大小，且第一上行资源大小小于或等于SL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，且第一上行资源大小小于或等于 SL BSR大小，确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小，确定SL BSR的优先级高于UL BSR的优先级，包括：用于第一上行资源大小大于或等于SL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，或者，第一上行资源大小大于或等于SL BSR大小，且第一上行资源大小小于或等于UL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，且第一上行资源大小小于或等于UL BSR大小，确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，还用于获取SL BSR的第一参数和UL BSR的第二参数。
第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
或者，第一参数为触发SL BSR的侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级，和/或第二参数为触发UL BSR的上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
处理模块，用于基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于第一上行资源大小小于SL BSR大小，且小于UL BSR大小，则基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
或者，第一上行资源大小大于或等于SL BSR大小，且大于或等于UL BSR大小，则终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于SL BSR的第一参数大于UL BSR的第二参数，则确定SL BSR的优先级高于UL BSR的优先级；SL BSR的第一参数小于UL BSR的第二参数，确定UL BSR的优先级高于SL BSR的优先级。
可选地，第五方面的通信装置还可以包括存储模块，该存储模块存储有程序或指令。当处理模块执行该程序或指令时，使得第五方面的通信装置可以执行上述第二方面的终端设备的功能。
第六方面，本申请实施例提供一种通信装置，该装置可以为终端设备或终端设备的组件(比如芯片系统)，或者其他具有终端功能的组件。该装置包括：处理模块和收发模块。
处理模块，用于生成第一BSR。
收发模块，用于发送第一BSR。其中，第一BSR包括满足第一条件的业务的缓冲状态信息；第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任意一种：预配置的数值，或者，网络设备配置的数值，或者，触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级；其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
在一种可能的设计中，收发模块，还用于发送第二BSR，第二BSR包括不满足第一条件的业务的缓冲状态信息。
可选地，第六方面的通信装置还可以包括存储模块，该存储模块存储有程序或指令。当处理模块执行该程序或指令时，使得第六方面的通信装置可以执行上述第三方面的终端设备的功能。
第七方面，本申请提供一种通信装置，该通信装置具有实现上述第一方面或者第二方面或第三方面任一项的缓冲状态报告上报方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第八方面，提供一种通信装置，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该通信装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如上述第一方面或者第二方面或第三方面中任一方面中任一项的缓冲状态报告上报方法。
第九方面，提供一种通信装置，包括：处理器；处理器用于与存储器耦合，并读取存储器中的指令之后，根据指令执行如上述第一方面或者第二方面或第三方面中任一项的缓冲状态报告上报方法。
第十方面，提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面或者第二方面或第三方面中任一项的缓冲状态报告上报方法。
第十一方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面或者第二方面或第三方面中任一项的缓冲状态报告上报方法。
第十二方面，提供一种电路系统，电路系统包括处理电路，处理电路被配置为执行如上述第一方面或者第二方面或第三方面中任一项的缓冲状态报告上报方法。
第十三方面，提供一种芯片，芯片包括处理器，处理器和存储器耦合，存储器存储有程序指令，当存储器存储的程序指令被处理器执行时实现上述第一方面或者第二方面或第三方面任意一项的缓冲状态报告上报方法。
第十四方面，提供了一种芯片系统，该芯片系统包括处理器和输入/输出端口，处理器用于实现上述第一方面至第三方面任一方面的缓冲状态报告上报方法所涉及的处理功能，输入/输出端口用于实现上述第一方面至第三方面任一方面的缓冲状态报告上报方法所涉及的收发功能。
在一种可能的设计中，该芯片系统还包括存储器，该存储器用于存储实现上述第一方面至第三方面任一方面的缓冲状态报告上报方法所涉及功能的程序指令和数据。
该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第二方面至第十四方面中任一种设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果，此处不再赘述。
附图说明
图1为本申请实施例提供的V2X通信场景的示意图；
图2为本申请实施例提供的上行链路和侧行链路的示意图；
图3为本申请实施例提供的通信系统的架构示意图；
图4为本申请实施例提供的通信装置的结构示意图；
图5为本申请实施例提供的比较优先级的原理示意图；
图6(a)～图6(c)为本申请实施例提供的缓冲状态报告上报方法的流程示意图；
图7为本申请实施例提供的比较优先级的原理示意图；
图8～图9为本申请实施例提供的缓冲状态报告上报方法的流程示意图；
图10(a)～图10(c)为本申请实施例提供的缓冲状态报告上报方法的流程示意图；
图11为本申请实施例提供的比较优先级的原理示意图；
图12为本申请实施例提供的通信装置的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
首先，为便于读者理解本申请实施例的技术方案，先介绍本申请实施例相关的一些技术术语：
1、逻辑信道(logical channel，LCH)：根据业务的不同，终端可能建立多个逻辑信道。LCH用于表示承载数据的通道。按其类型，LCH可以分为控制信道(control channel)和业务信道(traffic channel)。
2、逻辑信道组(logical channel group，LCG)：如果当某一逻辑信道有数据发送时，就上报该逻辑信道的BSR，会增加信令开销。为了避免这种情况，LTE引入了LCG的概念，将一个或者多个逻辑信道包括在一个LCG中。UE基于LCG来上报BSR，即UE在BSR中指示每一个LCG中缓存数据总量。
3、BSR MAC控制单元(control element，CE)：BSR承载在UL MAC协议数据单元(protocol data unit，PDU)中，UL MAC PDU包括一个或多个BSR MAC CE。具体的，在PC5接口上，UL MAC PDU包括一个或多个SL BSR MAC CE，在Uu接口上，UL MAC PDU包括一个或多个UL BSR MAC CE。
示例性的，BSR MAC CE的格式如表1所示：
表1
Figure PCTCN2019109778-appb-000001
其中，每一Destination(简写为DST)Index下可以有一个或多个LCG ID，多个Destination Index可以具有相同的LCG ID，比如，Destination Index1下可以有LCG ID1和LCG ID2，Destination Index2下也可以有LCG ID1和LCG ID2。Destination Index和LCG ID联合使用可以唯一表示LCG。
在本申请实施例中，终端设备可以将表1所示的BSR MAC CE封装进UL MAC PDU，并向网络设备发送UL MAC PDU，从而向网络设备上报LCG1的缓存数据总量(即Buffer Size 1)和LCG2的缓存数据总量(即Buffer Size 2)。
其中，Uu口上的UL BSR MAC CE和PC5接口上的SL BSR MAC CE格式可以不同。具体的，Uu口上的UL BSR MAC CE有四种格式：
·短BSR格式(固定大小)，即Short BSR格式；或
·长BSR格式(可变大小)，即Long BSR格式；或
·短截断BSR格式(固定大小)，即Short Truncated BSR格式；或
·长截断BSR格式(可变大小)，即Long Truncated BSR格式。
PC5接口上的SL BSR MAC CE有两种格式：
·BSR格式(可变大小)；或
·截断BSR格式(可变大小)。
4、逻辑信道标识(logical channel identification,LCID)：BSR格式，或称BSR MAC CE的格式由UL MAC PDU包括的子头(subheader)中的LCID标识。作为一种可能的实现方式，LCID取值和不同LCID取值的含义如表2所示：
表2
Figure PCTCN2019109778-appb-000002
Figure PCTCN2019109778-appb-000003
可见，根据表2，当LCID取值分别为111011～111110，BSR格式分别为短截断BSR、长截断BSR、短BSR、长BSR格式。
其中，每一BSR MAC CE对应一个LCID，用于表示该BSR MAC CE的BSR格式。比如，表1所示BSR MAC CE对应取值111011的LCID，表示该BSR MAC CE的BSR格式为短截断格式。
5、挂起(pending):指的是触发但并未发送的状态。比如，挂起数据，指的是未被发送的数据。挂起BSR，指的是触发但并未被发送的BSR。挂起SR，指的是触发但并未发送的SR。
6、非填补区缓存状态报告(non-padding BSR)：根据触发条件的不同，BSR可以分为填补区缓存状态报告(padding BSR)和非填补区缓存状态报告(non-padding BSR)。例如，当终端设备按照复用顺序复用完所有可能的数据和信令后，上行资源仍然存在剩余，并且剩余资源的大小足够容纳BSR及其子头，则触发BSR，该BSR称为padding BSR。当终端设备产生了比当前待传数据更高优先级的数据，则触发BSR，该BSR称为non-padding BSR。以上数据的优先级可以理解为缓存该数据的LCH的优先级。
7、优先级顺序：通常SL BSR MAC CE和UL BSR MAC CE在复用与封装组成MAC PDU的过程中，存在优先级先后顺序。其中，若SL BSR MAC CE的优先级高于UL BSR MAC CE的优先级，则终端设备优先在MAC PDU中封装进SL BSR MAC CE，反之，若SL BSR MAC CE的优先级低于UL BSR MAC CE的优先级，则终端设备优先在MAC PDU中封装进UL BSR MAC CE。
8、服务质量流(quality of service flow，QoS flow)：针对某种类别的数据流，可以为它赋予某个级别的传输优先级，来标识它的相对重要性，并使用设备所提供的各种优先级转发策略、拥塞避免等机制为这些数据流提供特殊的传输服务。其中，这样的一类数据流称为一个QoS flow。
9、数据无线承载(data radio bearer，DRB)：无线承载根据承载的内容不同分为信令无线承载(signaling radio bearer，SRB)和DRB。其中，DRB用于承载用户面数据。SRB用于承载控制面数据，即信令。
10、分组数据单元会话(packet data unit session，PDU session)：一个终端设备可以建有多个PDU Session(Protocol Data Unit Session，协议数据单元会话)，一个PDU Session可以对应上述的多个QoS Flow。同一个PDU Session对应的多个QoS flow可以映射到同一个DRB上。
11、业务目标标识：用于区分不同业务。比如，可以为表1所示的Destination Index。
在本申请实施例中，BSR，BSR MAC CE有时可以混用。缓存状态、缓冲状态、缓存信息、缓冲信息有时混用。
示例性的，本申请实施例中的优先级可以使用数据包优先级(prose per-packet priority，PPPP)、priority level值、priority值，5G服务质量标识(Fifth-generation  QoS Identifier，5QI，5QI)、其他反映SL传输质量要求的参数来等效替换，比如，本申请中出现的优先级可以使用PPPP替换。
本申请实施例的技术方案可以应用于各种通信系统。例如：正交频分多址(orthogonal frequency-division multiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。OFDMA系统可以实现诸如演进的通用无线陆地接入(evolved universal terrestrial radio access，E-UTRA)、超级移动宽带(ultra mobile broadband，UMB)等无线技术。E-UTRA是通用移动通信系统(universal mobile telecommunications system，UMTS)演进版本。第三代合作伙伴计划(3rd generation partnership project，3GPP)在LTE和基于LTE演进的各种版本是使用E-UTRA的新版本。5G通信系统是正在研究当中的下一代通信系统，也可以称之为NR系统。其中，5G通信系统包括非独立组网(non-standalone，简称NSA)的5G移动通信系统，独立组网(standalone，简称SA)的5G移动通信系统，或者，NSA的5G移动通信系统和SA的5G移动通信系统。此外，通信系统还可以适用于面向未来的通信技术，都适用本申请实施例提供的技术方案。上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，在此统一说明，以下不再赘述。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
本申请的说明书以及附图中的术语“第一”和“第二”等是用于区别不同的对象，或者用于区别对同一对象的不同处理，而不是用于描述对象的特定顺序。
“至少一个”是指一个或者多个，
“多个”是指两个或两个以上。
“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。
字符“/”一般表示前后关联对象是一种“或”的关系，例如，A/B可以表示A或B。
此外，本申请的描述中所提到的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括其他没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
需要说明的是，本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请的说明书以及附图中“的(英文：of)”，相应的“(英文corresponding，relevant)”和“对应的(英文：corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例中，“信息(information)”，“信号(signal)”，“消息(message)”，“信道(channel)”、“信令(singalling)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例中，有时候下标如W 1可能会笔误为非下标的形式如W1，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例中部分场景以图3所示的通信系统中的场景为例进行说明。应当指出的是，本申请实施例中的方案还可以应用于其他移动通信系统中，相应的名称也可以用其他移动通信系统中的对应功能的名称进行替代。
为便于理解本申请实施例，首先以图3中示出的通信系统为例详细说明适用于本申请实施例的通信系统。图3为本申请实施例的缓冲状态报告上报方法所适用的通信系统的架构示意图。如图3所示，该通信系统包括一个或多个终端设备，如终端设备1～终端设备7，以及一个或多个网络设备。
上述终端设备与网络设备之间可以在上行链路(uplink，UL)和/或下行链路(downlink)是通过Uu口通信。其中，对于UL，终端设备为发送方，网络设备为接收方，对于DL，网络设备为发送方，终端设备为接收方。
应理解，上述不同终端设备之间可以在侧行链路(sidelink，SL)上通过PC5口通信。其中，对于SL，一个终端设备为发送方，另一个或多个终端设备为接收方。
应理解，图3中仅示例性示出了部分终端之间的信号，以及部分终端和网络设备之间的信号。其他终端之间可能也存在收发信号。其他终端和网络设备之间可能也存在收发信号。
应理解，UL和SL都可以包括多种制式，如LTE和NR。以下具体的UL和SL的比较以及SL和SL的比较，并不限定于具体制式，如可以是NR UL和NR SL，也可以是NR UL和LTE SL或者LTE UL和NR SL。对于统一接口的比较，如SL和SL的比较则限定于NR SL和LTE SL比较。
在一些通信场景下，一个终端设备存在上行链路数据和侧行链路数据时，可能触发该终端设备向网络设备发送UL BSR和SL BSR，该终端设备需要确定UL BSR和SL BSR的优先级，或者说，确定将UL BSR和SL BSR复用/封装进同一个MAC PDU的优先级。具体的，在上行资源有限的情况下，上行资源不足以同时承载UL BSR MAC CE、UL BSR MAC CE子头、SL BSR MAC CE、SL BSR MAC CE子头；或者，不足以同时承载UL BSR MAC CE、SL BSR MAC CE；或者，不足以同时承载UL BSR MAC CE、UL BSR MAC CE子头、SL BSR MAC CE；或者，不足以同时承载UL BSR MAC CE、SL BSR MAC CE、SL BSR MAC CE子头，或者其他情况下终端设备需判断UL BSR和SL BSR的优先级，以便于确定是优先将UL BSR MAC CE和其子头封装进UL MAC PUD，还是优先将SL BSR MAC CE和其 子头封装进UL MAC PDU。
作为一种可能的实现方式，在现有LTE的逻辑信道优先级相关协议中，规定了固定的UL BSR和SL BSR的优先级顺序，即规定LTE中non-padding SL BSR优先级始终比non-padding UL BSR优先级低，也就是说，UL BSR的优先级始终高于SL BSR的优先级。这样一来，当存在高优先级的侧行链路业务或侧行链路数据触发SL BSR，且存在低优先级的上行链路业务或上行链路数据触发UL BSR，终端设备始终优先在UL MAC PDU中封装进UL BSR MAC CE。导致低优先级业务触发的UL BSR抢占了高优先级业务触发的SL BSR的资源，进而高优先级侧行链路业务触发的SL BSR可能被延迟传输。如此，高优先级侧行链路数据可能随之被延迟传输，即高优先级侧行链路数据的传输效率较低。
作为一种可能的实现方式，现有技术中还提出一种针对UL BSR和SL BSR的灵活优先级方案，可以将触发SL BSR的一个或多个LCH对应的优先级中具有最高优先级(highest LCH priority)的LCH的优先级视为SL BSR的优先级，将触发UL BSR的一个或多个LCH对应的优先级中具有最高优先级的LCH的优先级视为UL BSR的优先级。比如，触发SL BSR的LCH中，LCH1的优先级数值为7，LCH2的优先级数值为2。假设，优先级数值越高，优先级越低。则LCH2的优先级高于LCH1的优先级，LCH2的优先级可视为SL BSR的优先级。触发UL BSR的LCH中，LCH3的优先级数值为7，LCH4的优先级数值为2，LCH5的优先级数值为1，LCH5的优先级最高，LCH5的优先级可视为UL BSR的优先级。则终端设备通过比较SL BSR的优先级(即LCH2的优先级，数值为2)和UL BSR的优先级(即LCH5的优先级，数值为1)，确定UL BSR的优先级更高。在这种灵活优先级方式中，得到的优先级结果不够准确。具体的，参见图5，黑色填充的矩形框表示存在数据的逻辑信道，空白的矩形框表示不存在数据的逻辑信道。在T1时刻，优先级分别为7、8、10的逻辑信道中有数据待发送，触发了SL BSR1，这些逻辑信道对应的优先级中最高优先级为7，该优先级7可以视为SL BSR1的优先级。同理，在T2时刻，优先级分别为7、8、10、4的逻辑信道有数据待发送，触发了SL BSR2，这些逻辑信道对应的优先级中最高优先级为4，则SL BSR2的优先级为4。同理，在T3时刻，SL BSR3的优先级为2。在T4时刻，终端需在上行授权资源1(UL grant1)上向网络设备发送UL MAC PDU1。若该UL grant1大小有限，则终端需比较SL BSR和UL BSR的优先级。其中，SL BSR1～SL BSR3对应的优先级中最高优先级为2，则视为SL BSR的优先级为2。与上述类似原理，UL BSR的优先级为3。SL BSR的优先级较高，则终端优先将SL BSR MAC CE和其子头封装进UL MAC PDU1。若UL MAC PDU1还能承载其他内容，则再将UL BSR MAC CE和其子头封装进该UL MAC PDU1。在图5所示的场景中，由于SL BSR MAC CE的大小较大，UL MAC PDU1封装了截断格式的SL BSR MAC CE。在T5时刻，终端设备获得网络设备为其分配的侧行授权资源(SL grant)，以便于终端设备在该SL grant上发送一些侧行链路数据，如图5所示，在T6时刻到达之前，优先级数值为2、7、8的逻辑信道上的侧行链路数据已被发送。目前机制中，在T6时刻，若终端设备获得的上行授权资源2(UL grant2)的大小有限，该终端设备需比较SL BSR和UL BSR的优先级。并且，按照目前的BSR上报机制，若某一时刻某一UL MAC PDU中封装了截断格式的SL BSR MAC CE，则该时刻之前挂起(pending)的 SL BSR不能被取消，也就是继续保留该时刻之前挂起的SL BSR。所以，在T6时刻，由于之前被触发且挂起的SL BSR1～SL BSR3仍然被保留，且并未触发其他优先级更高的SL BSR，则终端设备仍然获取被触发的SL BSR1～SL BSR3的LCH对应的优先级中最高优先级，该值仍为2，且如图5所示，终端设备获取触发UL BSR的LCH对应的优先级中最高优先级为3。这样一来，SL BSR的优先级仍较高。可见，此种比较优先级的方式，容易导致之前被挂起的SL BSR的优先级持续较高，终端设备很可能持续优先复用SL BSR，然而实际在SL BSR中包含优先级较低的SL LCG或者SL LCH的缓冲状态信息，导致包括高优先级UL LCH或UL LCG缓冲状态信息的UL BSR上报的延迟，进而导致上行链路数据的传输时延，上行链路数据的传输效率不高。
此外，虽然采用灵活优先级方式能够一定程度上降低总是优先封装UL BSR MAC CE的概率，但是，在灵活优先级方式中，当确定某一种BSR的优先级较高，比如SL BSR的优先级较高时，优先在UL MAC PDU中封装进SL BSR MAC CE。容易理解，该SL BSR MAC CE可能包括一些高优先级侧行链路业务对应的缓存状态信息(比如buffer size)，也可能包括一些低优先级侧行链路业务对应的缓存状态信息，并且，这些低优先级侧行链路业务对应的优先级可能低于某些上行链路业务的优先级。也就是说，一些低优先级侧行链路业务的缓冲状态信息可能抢占了某些高优先级上行链路业务的缓冲状态信息，导致高优先级上行链路业务的缓冲状态信息被延迟传输，进而高优先级上行链路数据的传输可能被延迟。
在一种可能的设计方案中，终端设备在确定UL BSR和SL BSR优先级时，不是将触发SL BSR的LCH对应的优先级中具有最高优先级的LCH的优先级视为SL BSR的优先级，也不是将触发UL BSR的LCH对应的优先级中具有最高优先级的LCH的优先级视为UL BSR的优先级，而是将存在数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级视为SL BSR的优先级，将存在数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级视为UL BSR的优先级。如此，终端设备可以根据当前时刻真实存在的数据判断当前时刻UL BSR和SL BSR优先级比较结果，得到的优先级比较结果更契合业务需求。其中，当前时刻不限定具体是哪一个时刻。比如可以是判断UL BSR/SL BSR优先级的时刻，可以是封装UL BSR的时刻，也可以是接收到上行链路资源的时刻。比如，在图5中，T6时刻，优先级数值为4、6、10、9的SL LCH和优先级数值为3、4、5、6的UL LCH中，UL LCH具有最高优先级(数值为3)，则应该优先发送UL LCH触发的UL BSR，以便于后续终端能够优先发送高优先级的上行链路数据，满足优先发送高优先级的上行链路数据的业务需求。并且该优先级判断结果不受之前被挂起BSR的影响，使得该优先级判断结果更为准确。
在一种可能的设计方案中，终端设备基于第一上行资源大小确定UL BSR和SL BSR的优先级。
在一种可能的设计方案中，终端设备生成第一BSR，并发送该第一BSR。其中，该第一BSR包括满足第一条件的业务的缓冲状态信息。其中，第一条件是业务优先级大于或等于第一阈值。与现有技术中，在某次上行资源上发送的BSR中可能包括高优先级业务的缓冲状态和低优先级业务的缓冲状态信息，低优先级业务的缓冲状态信息可能占用较多资源相比，本申请实施例中，可以在上行资源上优先发送优先级较高的业务的缓冲状态信 息，降低低优先级业务的缓冲状态信息占用较多资源的概率。
在一种可能的设计方案中，可选地，在某一次上行资源有限的情况下，终端设备根据上述方法确定需优先复用某一种BSR。
需要说明的是，上述“MAC CE”可以包括如下一种或多种方式实现：网络设备预配置的MAC CE、或者网络设备通过信令动态配置的MAC CE、由协议预定义且在终端设备制造或入网时写入终端设备内部缓存的MAC CE。本申请对于“MAC CE”具体实现方式，不做具体限定。
需要说明的是，上述设计方案的具体实现将在后续方法实施例中详细描述，在此不再赘述。
可选地，上述网络设备为位于上述通信系统的网络侧，且具有无线收发功能的设备或可设置于该设备的芯片或芯片系统。该网络设备包括但不限于：无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)，如家庭网关、路由器、服务器、交换机、网桥等，演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G，如，NR系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)、具有基站功能的路边单元(road side unit，RSU)等。
可选地，上述终端设备可以是车辆(vehicle)；也可以是安装在车辆上用于辅助车辆行驶的车载通信装置或者车载终端，或者车载通信装置或车载终端内的芯片。其中，该车载终端可以是用于实现无线通信功能的设备，例如终端或者可用于终端中的芯片等。其中，终端可以是5G网络或者未来演进的PLMN中的用户设备(user equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备或可穿戴设备，虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。该车载终端可以是移动的，也可以是固定的。
应理解，图3仅为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备，和/或，其他终端设备，图3中未予以画出。
可选的，本申请实施例中的网络设备与终端设备也可以称之为通信装置，该通信装置可以是一个通用设备或者是一个专用设备，本申请实施例对此不作具体限定。
图4为本申请实施例提供的一种通信装置200的结构示意图。如图4所示，通信装置200可以是终端设备或网络设备，也可以是应用于终端设备或网络设备中的芯片或者其他具有终端功能或网络设备功能的部件、模块、子系统等。如图4所示，通信装置200可以包括处理器201，存储器202、收发器203。其中，处理器201，存储器202、收发器203之间存在信号连接，如可以通过通信总线连接。
下面结合图4对通信装置200的各个构成部件进行具体的介绍：
处理器201是通信装置200的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器201是一个或多个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。
其中，处理器201可以通过运行或执行存储在存储器202内的软件程序，以及调用存储在存储器202内的数据，执行通信装置200的各种功能。
在具体的实现中，作为一种实施例，处理器201可以包括一个或多个CPU，例如图4中所示的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置200也可以包括多个处理器，例如图4中所示的处理器201和处理器204。这些处理器中的每一个可以是一个单核处理器(single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个通信设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器202可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储通信设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储通信设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储通信设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器202可以独立存在，也可以和处理器201集成在一起。
其中，存储器202用于存储执行本申请方案的软件程序，并由处理器201来控制执行。上述具体实现方式可以参考下述方法实施例，此处不再赘述。
收发器203，用于通信装置200与其他通信装置之间的通信。收发器203可以包括接收单元实现接收功能，以及发送单元实现发送功能。
需要说明的是，图4中示出的通信装置200的结构并不构成对该通信装置的限定，实际的通信装置可以包括比图4所示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面将结合附图对本申请实施例提供的缓冲状态报告上报方法进行具体阐述。
在本申请实施例中，不同侧行链路业务可以对应于不同的层1目标标识，和/或对应不同的层2目标标识(Destination Index)，也可以对应于相同的层1目标标识，和/或相同的层2目标标识。不同侧行链路业务可以对应于不同的层1目标标识+源标识组(source Index pair)，和/或对应不同层2目标标识+层2源标识组。不同侧行链路业务可以对应于相同的层1目标标识+源标识组，和/或对应相同的层2目标标识+层2源标识组。
图6(a)为本申请实施例提供的缓冲状态报告上报方法的流程示意图一。该缓冲状态报告上报方法可以适用于图3所示的终端设备向网络设备上报SL BSR和/或UL BSR。
如图6(a)所示，该缓冲状态报告上报方法包括如下步骤：
S601、终端设备获取SL BSR对应的第一参数和UL BSR对应的第二参数。
在本申请实施例中，需要说明的是，可选地，可以提前为SL BSR MAC CE定义优先级这样一个参数，该优先级用于指示SL BSR这一MAC CE在逻辑信道优先级(logical channel prioritization，LCP)复用过程中的优先级。该优先级可以定义为与多个已经挂起的SL BSR对应的优先级相同或不同，或者与触发多个SL BSR的SL LCH/LCG的优先级可以相同也可以不同。同理，可选地为UL BSR MAC CE定义一个优先级，该优先级用于指示UL BSR这一MAC CE在LCP复用过程中的优先级关系，与多个已经挂起的UL BSR对应的优先级，或者与触发多个UL BSR的UL LCH/LCG的优先级可以相同也可以不同。或者，上述优先级与PPPP、或者5QI相关。或者，与其他参数相关。
或者，在本申请实施例中，不提前为SL BSR MAC CE和/或UL BSR MAC CE定义优先级，将第一参数与第二参数对应的优先级分别视为SL BSR和UL BSR的优先级，或者，将第一参数与第二参数对应的优先级分别视为SL BSR MAC CE和UL BSR MAC CE的在复用与封装组成MAC PDU过程中的优先级。
或者，在本发明中，不提前为SL BSR MAC CE和/或UL BSR MAC CE定义优先级，仅在需要确定UL BSR MAC CE与SL BSR MAC CE在LCP复用封装过程中的先后关系(或相对的优先级顺序)时，利用与SL BSR有关的第一参数和与UL BSR有关的第二参数进行判断。
其中，第一参数与存在数据的侧行链路业务的优先级相关，第二参数与存在数据的上行链路业务的优先级相关。具体的，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级。和/或。第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
作为另外可能的实现方式，第一参数为SL BSR MAC CE中包括的LCG ID对应的SL LCG中包括的SL LCH中具有最高优先级的SL LCH的优先级，和/或，第二参数为UL BSR MAC CE中包括的LCG ID对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级。
在UL BSR MAC CE中，每一LCG对应一个指示比特，其中，对于某一LCG，指示比特用于指示该LCG在UL BSR MAC CE中是否存在缓存状态(buffer size)字段，示例性的，若比特为1，指示该LCG在UL BSR MAC CE中存在对应的buffer size字段。
第二参数为UL BSR MAC CE中指示比特为1的比特对应的UL LCG中包括的UL LCH中 具有最高优先级的UL LCH的优先级，或者，第二参数为UL BSR MAC CE中缓存状态(buffer size)字段对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级。
“存在数据(available)”表示存在待传输的数据，或者可用数据，或者有效数据。
侧行链路业务包括以下一个或多个：SL QoS流、SL LCH、SL DRB、SL LCG、SL业务目标标识(Destination Index)、SL PDU session。上行链路业务包括以下一个或多个：UL QoS流、UL LCH、UL DRB、UL LCG、UL业务目标标识、UL PDU session。
作为一种可能的实现方式，侧行链路业务为SL LCH，第一参数为存在侧行链路数据的一个或多个SL LCH对应的优先级中具有最高优先级的SL LCH的优先级；和/或上行链路业务为UL LCH，第二参数为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH的优先级。在本申请实施例中，优先级可以以数值表示，优先级数值越大，表示优先级越低，反之，数值越小，优先级越高。或者，数值越大，优先级越高，反之，数值越小，优先级越低。本申请实施例并不限制优先级数值与优先级高低的具体关系。或者，优先级还可以用类别表示。比如，将优先级分为一种或多种类别，例如A类(classification A)、B类(classification B)，不同类别的优先级不同，可按照预定义或者配置使A类优先级高于B类，或者B类优先级高于A类。下文主要以优先级数值表示优先级高低，且优先级数值越大，优先级越低为例对本申请实施例的技术方案进行阐述，在此统一说明，下文不再赘述。当然，以类别表示优先级高低，或以其他方式表示优先级高低，也适用于下述实施例方案。
比如，以图5为例，在T6时刻，存在侧行链路数据的SL LCH对应的优先级数值分别为4、6、10、9，其中优先级数值为4的SL LCH具有最高优先级，则第一参数为该SL LCH的优先级(该优先级数值为4)。类似的，对于UL BSR，存在上行链路数据的UL LCH对应的优先级数值分别为3、4、5、6，其中，优先级数值为3的UL LCH具有最高优先级，则第二参数为该UL LCH的优先级(该优先级数值为3)。该第二参数可以用于表示UL BSR的优先级。又比如，以图7为例，图7示出了获取SL BSR的第一参数的原理，其中，存在侧行链路数据的LCH对应的优先级数值分别为2、7、8、4、6、10，优先级数值为2的LCH具有最高优先级，所以，此种情况下，该具有最高优先级的LCH对应的优先级作为SL BSR对应的第一参数。
作为一种可能的实现方式，侧行链路业务为SL LCG，第一参数为存在侧行链路数据(SL data)的一个或多个SL LCG对应的优先级中具有最高优先级的SL LCG的优先级；和/或，上行链路业务为UL LCG，第二参数为存在上行链路数据(UL data)的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。其中，LCG对应的优先级，指的是LCG包括的一个或多个LCH对应的优先级中具有最高优先级的LCH的优先级。以图7为例，图7所示的4个SL LCG均存在侧行链路数据，其中，DST1对应LCG1的优先级为1，DST1对应LCG2的优先级为7，DST2对应LCG1的优先级为4，DST2对应LC12的优先级为9。其中，DST1对应LCG1对应的优先级最高，所以，此种情况下，DST1对应LCG1对应的优先级作为SL BSR的第一参数。
作为一种可能的实现方式，侧行链路业务为SL LCG，第一参数为SL BSR MAC CE中包括的一个或多个LCG ID对应的SL LCG中包括的SL LCH中具有最高优先级的SL LCH的优先级；和/或，上行链路业务为UL LCG，第二参数为UL BSR MAC CE中一个或多个指示取 值为“1”的比特位对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级。
在本申请实施例中，LCG对应的优先级，指的是LCG包括的一个或多个LCH对应的优先级中具有最高优先级的LCH的优先级。
比如，以图5为例，在构造MAC PDU2时，完整的SL BSR MAC CE中应包含DST2对应的LCG1和LCG2的缓存状态，其中，在这两个SL LCG包含的所有SL LCH中，具有最高优先级的LCH的优先级为4，则第一参数为4。同时，完整的UL BSR MAC CE中应包含LCG1和LCG3的缓存状态，其中，在这两个UL LCG包含的所有UL LCH中，具有最高优先级的LCH的优先级为3，则第一参数为3。
S602、终端设备根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。
具体的，若第一参数大于第二参数，则终端设备确定SL BSR的优先级高于UL BSR的优先级；若第一参数小于或等于第二参数，则终端设备确定UL BSR的优先级高于SL BSR的优先级。
以图5为例，结合上文举例，若上行链路业务为UL LCH，侧行链路业务为SL LCH，在图5所示的T6时刻，SL BSR的第一参数为优先级数值4对应的优先级，UL BSR的第二参数为优先级数值3对应的优先级，优先级数值4所表示的优先级低于优先级数值3所表示的优先级，即SL BSR的优先级低于UL BSR的优先级，也就是说，当UL grant大小小于UL BSR MAC CE、UL BSR MAC CE的子头、SL BSR MAC CE和SL BSR MAC CE的子头加起来的大小，终端设备优先将UL BSR MAC CE和UL BSR MAC CE的子头封装进UL MAC PDU中，若存在剩余资源，继而将SL BSR MAC CE封装进UL MAC PDU，以便于优先请求调度用于传输上行链路数据的上行资源。
在一些实施例中，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级的数值。和/或。第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级的数值。此种情况下，SL BSR的第一参数(优先级数值)大于UL BSR的第二参数，说明SL BSR的优先级低于UL BSR的优先级。
在一些实施例中，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级的类别。和/或。第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级的类别。此种情况下，可以根据预定义或配置，获取SL BSR的优先级和UL BSR的优先级。
本申请实施例提供的缓冲状态报告上报方法，终端设备获取SL BSR对应的第一参数和UL BSR对应的第二参数，并根据第一参数和第二参数，确定UL BSR和SL BSR的优先级。其中，第一参数与存在侧行链路数据的侧行链路业务的优先级相关，第二参数与存在上行链路数据的侧行链路业务的优先级相关。与现有技术中通过比较触发UL BSR和SL BSR的LCH对应的优先级中具有最高优先级的LCH的优先级，以确定UL BSR和SL BSR的优先级，导致终端设备可能持续优先封装SL BSR MAC CE或UL BSR MAC CE，进而上行链路数据或侧行链路数据的传输被延迟相比，本申请实施例的技术方案中，由于是基于实际存在的侧行链路数据的侧行链路业务的优先级，和/或存在上行链路数据的上行链路业务的优 先级，来确定UL BSR和SL BSR的优先级，得到的优先级比较结果更契合业务需求。以便于终端设备后续能够优先发送高优先级的上行链路数据或侧行链路数据，提升上行链路数据或侧行链路数据的发送效率。
如图6(b)所示，该缓冲状态报告上报方法包括如下步骤：
S603、终端设备获取SL BSR对应的第三参数、UL BSR对应的第四参数，和/或第二阈值。
在本申请实施例中，需要说明的是，可选地，为UL BSR MAC CE定义一个优先级，该优先级用于指示UL BSR这一MAC CE在LCP复用过程中的优先级关系，与多个已经挂起的UL BSR对应的优先级，或者与触发多个UL BSR的UL LCH/LCG的优先级可以相同也可以不同。
或者，在本申请实施例中，不为SL BSR MAC CE和/或UL BSR MAC CE定义优先级，将第一参数值与第二参数值对应的优先级分别视为SL BSR和UL BSR的优先级，或者，将第一参数值与第二参数值对应的优先级分别视为SL BSR MAC CE和UL BSR MAC CE的在复用与封装组成MAC PDU过程中的优先级顺序。
或者，在本发明中，不为SL BSR MAC CE和/或UL BSR MAC CE定义优先级，仅在需要确定UL BSR MAC CE与SL BSR MAC CE在LCP复用封装过程中的先后关系(或相对的优先级顺序)时，利用与SL BSR有关的第三参数和与UL BSR有关的第四参数和/或第二阈值进行判断。
其中，第三参数与存在数据的侧行链路业务的优先级相关，第四参数与存在数据的上行链路业务的优先级相关。
作为一种可能的实现方式，第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级,或者，第四参数为UL BSR MAC CE中包括的LCG ID对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级，或者，第四参数为UL BSR MAC CE中指示取值为“1”的比特位对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级，或者，第四参数为UL BSR MAC CE中缓存状态字段对应的UL LCG中包括的UL LCH中具有最高优先级的UL LCH的优先级。
和/或，第三参数为存在侧行链路数据的侧行链路业务中优先级大于或等于第四参数的侧行链路业务的个数。
和/或，上述第二阈值为预配置的数值。比如，第二阈值是协议预定义的数值。或者，第二阈值为出厂时预配置在终端中的数值，可选的，该数值后续可以被更新。或者，第二阈值为网络设备配置的数值。或者，第二阈值为第四参数。
示例性的，网络设备为每一个上行链路业务配置一个阈值参数，若第四参数与某个上行链路业务关联，则该上行链路业务配置中的阈值参数作为用于确定SL BSR与UL BSR的优先级的第二阈值。例如，存在有效数据的SL LCH为SL LCH1～SL LCH8。其中，UL LCH1的优先级为5，阈值参数为5；UL LCH2的优先级为4，阈值参数为3，UL LCH2的优先级为7，阈值参数为2。若第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级，其中UL LCH2为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH，则UL LCH2的优先级(数值为4)视为第四参数，与UL LCH2关联的阈值参数为3，则第二阈值为3。
侧行链路业务包括以下一个或多个：SL QoS流、SL LCH、SL DRB、SL LCG、SL业务目标标识(Destination Index)、SL PDU session。上行链路业务包括以下一个或多个：UL QoS流、UL LCH、UL DRB、UL LCG、UL业务目标标识、UL PDU session。
作为一种可能的实现方式，侧行链路业务为SL LCH，和/或上行链路业务为UL LCH。第三参数为存在侧行链路数据的SL LCH的优先级大于或等于第四参数的SL LCH的个数。其中第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
例如，存在有效数据的SL LCH为SL LCH1～SL LCH8，分别对应的优先级为1～8。其中，存在有效数据的UL LCH为：UL LCH1的优先级为5；UL LCH2的优先级为4，UL LCH3的优先级为7。若第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级，其中UL LCH2为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH，则第四参数为4，网络配置第二阈值为3。若存在侧行链路数据的SL LCH的优先级大于或等于4的SL LCH的个数为4，则第三参数为4。
作为一种可能的实现方式，侧行链路业务为SL LCG，第三参数为存在侧行链路数据(SL data)的一个或多个SL LCG对应的优先级大于或等于第四参数的个数；和/或，上行链路业务为UL LCG，第四参数为存在上行链路数据(UL data)的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。其中，LCG对应的优先级，指的是LCG包括的一个或多个LCH对应的优先级中具有最高优先级的LCH的优先级。
例如，存在有效数据的SL LCG为SL LCG1～SL LCG8，分别对应的优先级为1～8，即SL LCG中包括的SL LCH的最高优先级分别为1～8。并且，存在有效数据的UL LCG为：UL LCG1对应的优先级为2；UL LCG2对应的优先级为4，UL LCG3的优先级为7。若第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级，则第四参数为2，网络配置第二阈值为5。则存在侧行链路数据的SL LCH的优先级大于或等于2的SL LCH的个数为2，即第三参数为2。
S604、终端设备根据第三参数和第二阈值，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。
具体的，若第三参数大于或等于第二阈值，则终端设备确定SL BSR的优先级高于UL BSR的优先级；若第三参数小于第二阈值，则终端设备确定UL BSR的优先级高于SL BSR的优先级。
示例性地，结合上文举例，若存在有效数据的SL LCH为SL LCH1～SL LCH8，分别对应优先级为1～8。并且，存在有效数据的UL LCH为：UL LCH1的优先级为4；UL LCH2的优先级为5，UL LCH2的优先级为7。若第四参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级，其中UL LCH1为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH，则第四参数为4，网络配置第二阈值为3。则存在侧行链路数据的SL LCH的优先级大于或等于4的SL LCH的个数为4，即第三参数为4。
由于第三参数(4)大于第二阈值(3)，则终端设备确定SL BSR优先级高于UL BSR。也就是说，当UL grant大小小于UL BSR MAC CE、UL BSR MAC CE的子头、SL BSR MAC CE 和SL BSR MAC CE的子头加起来的大小，终端设备优先将SL BSR MAC CE和SL BSR MAC CE的子头封装进UL MAC PDU中，若存在剩余资源，继而将UL BSR MAC CE封装进UL MAC PDU以便于优先请求调度用于传输上行链路数据的上行资源。
需要说明的是，图6(a)对应的技术方案和图6(b)对应的技术方案是两个并列技术方案，S603、S604并非是在S601、S602之后执行的步骤，而是独立于S601、S602之外的步骤。其他类似步骤，也可参见这里的描述。
本申请实施例提供的通信方法，终端设备获取SL BSR对应的第三参数和UL BSR对应的第四参数，以及第二阈值，并根据第三参数、第四参数、第二阈值，确定UL BSR和SL BSR的优先级。其中，第三参数与存在侧行链路数据的侧行链路业务的优先级以及数量相关，第四参数与存在上行链路数据的侧行链路业务的优先级相关。与现有技术中通过比较触发UL BSR和SL BSR的LCH对应的优先级中具有最高优先级的LCH的优先级，以确定UL BSR和SL BSR的优先级，导致终端设备可能持续优先封装SL BSR MAC CE或UL BSR MAC CE，进而上行链路数据或侧行链路数据的传输被延迟相比，本申请实施例的技术方案中，基于实际存在的侧行链路数据的侧行链路业务的优先级，和/或存在上行链路数据的上行链路业务的优先级，并对满足条件的侧行链路业务的数量进行进一步约束，来确定UL BSR和SL BSR的优先级，得到的优先级比较结果更契合业务需求。以便于终端设备后续能够优先发送高优先级的上行链路数据或侧行链路数据，提升上行链路数据或侧行链路数据的发送效率。
当然，如图6(c)所示，该缓冲状态报告上报方法包括如下步骤：
S605、终端设备获取SL BSR对应的第五参数、UL BSR对应的第六参数，和/或第三阈值。
其中，第五参数与存在数据的侧行链路业务的优先级相关，第六参数与存在数据的上行链路业务的优先级相关。
作为一种可能的实现方式，第五参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级,或者，第五参数为SL BSR MAC CE中包括的LCG ID对应的SL LCG中包括的SL LCH中具有最高优先级的SL LCH的优先级，或者，第五参数为SL BSR MAC CE中指示取值为“1”的比特位对应的SL LCG中包括的SL LCH中具有最高优先级的SL LCH的优先级，或者，第五参数为SL BSR MAC CE中缓存状态字段对应的SL LCG中包括的SL LCH中具有最高优先级的SL LCH的优先级。
和/或，第六参数为存在上行链路数据的上行链路业务中优先级大于或等于第五参数的上行链路业务的个数。
和/或，上述第三阈值为预配置的数值。比如，第三阈值是协议预定义的数值。或者，第三阈值为出厂时预配置在终端中的数值，可选的，该数值后续可以被更新。或者，第三阈值为网络设备配置的数值。
S606、终端设备根据第六参数和第三阈值，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。
具体的，若第六参数大于或等于第三阈值，则终端设备确定SL BSR的优先级低于UL BSR的优先级；若第六参数小于第三阈值，则终端设备确定UL BSR的优先级低于SL BSR的优先级。
图6(c)对应的技术方案的原理具体可参见图6(b),这里不再赘述。
本申请实施例还提供一种缓冲状态报告上报方法，如图8所示，该方法包括如下步骤：
S801、终端设备获取第一上行资源的大小。
第一上行资源大小可以用第一上行资源size表示，或者，第一上行资源大小可以指第一上行资源的比特(bit)数，或者，第一上行资源大小可以指第一上行资源剩余的比特数；或者，第一上行资源大小可以指填补区(padding)的比特数。本申请实施例并不限制第一资源大小的具体表示方式。
S802、终端设备基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者，确定UL BSR的优先级低于SL BSR的优先级。
在本申请实施例中，终端设备可以基于第一上行资源大小和/或UL BSR的大小和/或SL BSR的大小，来确定UL BSR的优先级和SL BSR的优先级，即，当第一上行资源大小足以承载某一完整BSR，或者当第一资源大小大于或等于某一BSR大小，则在第一上行资源上的UL MAC PDU中优先封装进该完整BSR。
其中，BSR大小可以用BSR size表示，或者，BSR大小可以用BSR MAC CE的size表示，或者，BSR大小可以用BSR MAC CE占用的比特数表示；或者，上述第一上行资源大小可以指填补区(padding)的比特数。
需要说明的是，本方案不限定具体应用在non-padding BSR，或者应用在padding BSR中。
可选的，本发明中提到的BSR大小可以为BSR MAC CE及其子头的大小，其中BSR可以为长格式BSR，也可以为短格式BSR，或者截断格式的BSR。
具体的，可以分如下几种情况：
情况1：第一上行资源大小大于或等于UL BSR大小，确定UL BSR的优先级高于SL BSR的优先级。终端设备在第一上行资源上优先复用(multiplex)UL BSR。可选地，然后复用SL BSR。
在本申请实施例的描述中，“优先复用UL BSR”可以理解为UL BSR的优先级在MAC PDU的复用与封装过程中高于SL BSR；或者，“优先复用UL BSR，然后复用SL BSR”可以理解为UL BSR在复用与封装过程中的优先级高于SL BSR。可选的然后复用SL BSR可以理解为：UL BSR优先被复用后，若第一上行资源有剩余，并且足以承载完整或部分SL BSR，则复用SL BSR。在此统一说明。
其中，第一上行资源大小大于或等于UL BSR大小，指的是第一上行资源大小大于或等于完整UL BSR所需资源的大小。完整UL BSR可以包括当前存在数据的一个或多个LCG的缓冲状态信息。完整UL BSR的格式可以是短格式、或长格式、或短截断格式、或长截断格式。示例性的，当前存在数据的LCG为LCG1和LCG2，则完整UL BSR对应的UL BSR MAC CE包括指示LCG1和LCG1存在buffer size字段及其缓冲状态(buffer size)信息，比如指示LCG1和LCG2在UL BSR MAC CE中存在buffer size字段的指示比特，该指示比特取值为“1”，并且UL BSR MAC CE的后续字段中存在LCG1和LCG2的Buffer Size1和Buffer Size2字段。
情况2：第一上行资源大小大于或等于UL BSR大小，且第一上行资源大小小于或等于SL BSR大小，则终端设备确定UL BSR的优先级高于SL BSR的优先级。即，第一上行资源 足以承载完整UL BSR，却不足以承载完整SL BSR时，终端设备优先在第一上行资源上复用UL BSR，可选地，然后复用SL BSR。
与情况1不同的是，情况1中，可以优先比较第一上行资源大小与UL BSR大小，一旦第一上行资源足够用于承载UL BSR，则不再继续考虑第一上行资源是否足够承载SL BSR，直接在第一上行资源上优先发送UL BSR。只有第一上行资源大小不足以承载UL BSR，才继续判断第一上行资源是否足以承载SL BSR。
情况3：第一上行资源大小大于或等于UL BSR和包含至少一个SL LCG的缓冲状态信息的SL BSR的大小，则终端设备确定UL BSR的优先级高于SL BSR的优先级。或者说终端设备在第一上行资源上优先复用UL BSR，然后复用至少一个SL LCG的缓冲状态信息。也就是说，第一上行资源足以承载完整UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR，则在第一上行资源上发送完整UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR。
可选的，终端设备优先在第一上行资源上复用UL BSR，然后根据剩余上行资源的大小以及存在待传数据的SL LCG的个数，尽可能多地在剩余上行资源上复用SL BSR中包含的一个或多个SL LCG的缓冲状态信息。
情况4：第一上行资源大小大于或等于UL BSR和包含至少一个SL LCG的缓冲状态信息的SL BSR的大小，且第一上行资源大小小于或等于SL BSR的大小，则终端设备确定UL BSR的优先级高于SL BSR的优先级。或者说终端设备在第一上行资源上优先复用UL BSR，然后复用包含至少一个SL LCG的缓冲状态信息的SL BSR。
可选的，终端设备优先在第一上行资源上复用UL BSR，然后根据剩余上行资源的大小以及存在待传数据的SL LCG的个数，尽可能多地在剩余上行资源上复用SL BSR中包含的一个或多个SL LCG的缓冲状态信息。
情况5：第一上行资源大小大于或等于SL BSR大小，则终端设备确定SL BSR的优先级高于UL BSR的优先级，在第一上行资源上优先复用SL BSR。
情况6：第一上行资源大小大于或等于SL BSR和包含至少一个UL LCG的缓冲状态信息的UL BSR的大小，则终端设备确定SL BSR的优先级高于UL BSR的优先级。或者说，终端设备在第一上行资源上优先复用SL BSR，然后复用包含至少一个UL LCG的缓冲状态信息的UL BSR。
情况7：第一上行资源大小大于或等于SL BSR大小，且第一上行资源大小小于或等于UL BSR大小，则终端设备确定SL BSR的优先级高于UL BSR的优先级。或者说，终端设备在第一上行资源上优先复用SL BSR，然后复用包含至少一个UL LCG的缓冲状态信息的UL BSR。
情况8：第一上行资源大小大于或等于SL BSR和包含至少一个UL LCG的缓冲状态信息的UL BSR的大小，且第一上行资源大小小于或等于UL BSR大小，则终端设备确定SL BSR的优先级高于UL BSR的优先级。换句话说，终端设备在第一上行资源上优先复用SL BSR，然后复用包含至少一个UL LCG的缓冲状态信息的UL BSR。
其中，情况4～情况8的原理可以参见情况1～情况3，这里不再赘述。
情况9：第一上行资源大小小于UL BSR，且第一上行资源大小小于SL BSR的大小。
这种情况下，作为一种可能的实现方式，终端设备确定SL BSR的优先级高于UL BSR 的优先级。或者说终端设备在第一上行资源上优先复用SL BSR。可选的，终端设备根据剩余第一上行资源的大小以及存在待传数据的SL LCG的个数，尽可能多地在剩余上行资源上复用SL BSR中包含的一个或多个SL LCG的缓冲状态信息。
或者，作为另外可能的实现方式，这种情况下，终端设备确定UL BSR的优先级高于SL BSR的优先级。或者说终端设备在第一上行资源上优先复用UL BSR。
或者，作为另外可能的实现方式，这种情况下，终端采用图6（a）或图6（b）或图6（c）的方法确定SL BSR和UL BSR的优先级。
图6（a）对应的技术方案中，终端设备可以基于UL BSR对应的第一参数和SL BSR对应的第二参数来确定UL BSR和SL BSR的优先级。在本申请实施例中，还提供一种缓冲状态报告上报方法，该方法中可以结合第一上行资源大小、第一参数和第二参数，来确定UL BSR和SL BSR的优先级。具体的，参见图9，该方法包括如下步骤：
S901、终端设备获取SL BSR对应的第一参数和UL BSR对应的第二参数。
其中，第一参数和第二参数，可以分别是图6（a）对应的技术方案中的第一参数和第二参数。即第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
当然，第一参数和第二参数也可以是现有技术中用于表示优先级的参数。本申请实施例并不限制终端设备获取优先级的具体方式。作为一种可能的实现方式，第一参数为触发SL BSR的侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级，和/或第二参数为触发UL BSR的上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。比如，将触发SL BSR的一个或多个LCH对应的优先级中具有最高优先级(highest LCH priority)的LCH的优先级视为SL BSR的第一参数，将触发UL BSR的一个或多个LCH对应的优先级中具有最高优先级的LCH的优先级视为UL BSR的第二参数。
S902、终端设备获取第一上行资源大小。
S902的详细介绍可参见上述S801，这里不再赘述。
其中，S901和S902的顺序可以互换，也可以同时进行，即不限定S901和S902的执行顺序。
S903、终端设备基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
具体的，第一上行资源大小小于SL BSR大小，且第一上行资源小于UL BSR大小，则终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。或者，第一上行资源大小大于或等于SL BSR大小，且第一上行资源大于或等于UL BSR大小，其中包括第一上行资源大小大于或等于SL BSR以及UL BSR大小的情况，即第一上行资源可以同时容纳(accommodate)SL BSR和UL BSR的情况，以及第一上行资源能容纳完整的UL BSR或SL BSR两者之一的情况，则终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。或者，第一上行资源大小小于UL BSR和包含一个SL LCG的缓冲状态信息的SL BSR的大小，则则终端设备基于第一参数和第二参数， 确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
其他情况下，当第一上行资源大小与SL BSR和/或UL BSR的大小关系满足图8方案时，可按照图8方案比较SL BSR与UL BSR的优先级。也就是说，在第一上行资源足以承载UL BSR的情况下，则终端设备确定UL BSR的优先级高于SL BSR；和/或，在第一上行资源足以承载UL BSR和包含一个SL LCG的缓冲状态信息的SL BSR的情况下，则终端设备确定UL BSR的优先级高于SL BSR；或者，其他情况下，终端设备也可以结合UL BSR的第二参数和SL BSR的第一参数，来确定哪一BSR的优先级较高，具体可参见图6（a）对应的技术方案。
或者，当第一上行资源不足以承载完整SL BSR，且第一上行资源也不足以承载完整UL BSR，或者，第一上行资源既足以承载完整SL BSR，也足以承载完整UL BSR，无法仅根据第一上行资源大小判断哪一BSR的优先级较高时，可以结合UL BSR的第二参数和SL BSR的第一参数，来确定哪一BSR的优先级较高。具体的，SL BSR的第一参数大于UL BSR的第二参数，则确定SL BSR的优先级高于UL BSR的优先级；SL BSR的第一参数小于或等于UL BSR的第二参数，则确定UL BSR的优先级高于SL BSR的优先级。
本申请实施例还提供一种通信方法，参见图10(a)，该方法包括如下步骤：
S1004、终端设备确定SL BSR的优先级高于UL BSR。
其中，确定优先级的方法可以是图6(a)、图6(b)、图6(c)、图8、图9分别所对应的方法。
S1005、终端设备基于第一上行资源的大小、UL BSR大小和/SL BSR大小，确定将UL BSR和SL BSR封装进MAC PDU的顺序，即先复用UL BSR，或者先复用SL BSR。
容易理解，在确定SL BSR的优先级较高的基础上，还需考虑优先将哪一BSR封装进MAC PDU。
具体的，若第一上行资源大小大于或等于UL BSR大小，则终端设备确定优先将UL BSR封装进MAC PDU，若第一上行资源存在剩余，再复用SL BSR；或者，若第一上行资源大小大于或等于UL BSR和包含一个SL LCG的缓冲状态信息的SL BSR的大小，则终端设备确定优先将UL BSR封装进MAC PDU，若资源存在剩余，再复用SL BSR；否则，即在第一上行资源大小不满足上述两种条件或者两者之一的情况下，则终端设备确定将SL BSR封装进MAC PDU。可选的，SL BSR中尽可能多地上报侧行链路缓存状态信息。例如，根据第一上行资源大小和/或存在数据的SL LCG，尽可能多个上报目标标识和/或SL LCG的缓存状态信息。当然，本申请实施例的技术方案不限于此。
本申请实施例还提供一种缓冲状态报告上报方法，参见图10(b)，该方法包括如下步骤：
S1001、存在满足第一条件的业务，终端设备生成第一BSR。
其中，第一BSR包括满足第一条件的业务的缓冲状态信息。第一条件为业务的优先级大于或等于第一阈值。作为一种可能的实现方式，上述第一阈值为预配置的数值。比如，第一阈值是协议预定义的数值。或者，第一阈值为出厂时预配置在终端中的数值，可选的，该数值后续可以被更新。或者，第一阈值为网络设备配置的数值。或者，第一阈值为图6（a）所示技术方案中的第二参数。这里，比较业务优先级的方式，可以是按照现有技术，也可 以按照图6（a）或图6（b）或图6（c）对应的技术方案,或者，使用本申请实施例中其他用于比较优先级的方式。
可选的，第一BSR不包括不满足第一条件的业务的缓冲状态信息。也就是说，第一BSR仅包括满足第一条件的业务的缓冲状态信息。
其中，满足第一条件的业务可以是侧行链路业务。这种情况下，第一BSR包括侧行链路业务的优先级大于或等于第一阈值的侧行链路业务的缓冲状态信息。
或者，满足第一条件的业务可以是上行链路业务。第一BSR包括上行链路业务的优先级大于或等于第一阈值的上行链路业务的缓冲状态信息。
或者，满足第一条件的业务可以是侧行链路业务和上行链路业务。第一BSR包括业务的优先级大于或等于第一阈值的上行链路业务和侧行链路业务的缓冲状态信息。
当满足第一条件的业务仅包括侧行链路业务。上行链路业务为上行链路逻辑信道，侧行链路业务为侧行链路逻辑信道。以图11为例，采用图6（a）对应的技术方案比较业务的优先级，若第一阈值为4，存在数据的LCH是黑色填充的优先级数值分别为2、7、8、4、6、10的SL LCH。其中，DST1对应的SL LCG1中的第一个SL LCH的优先级、DST2对应的SL LCG1中的第1个SL LCH的优先级大于或等于第一阈值。即，满足第一条件的SL LCH为图11中侧行链路逻辑信道组中的箭头所指示的SL LCH，或者，满足第一条件的SL LCG为图11中侧行链路逻辑信道组中的箭头所指示的SL LCH所属的SL LCG。
当满足第一条件的业务既可以包括侧行链路业务，又可以包括上行链路业务。上行链路业务为上行链路逻辑信道，侧行链路业务为侧行链路逻辑信道。以图11为例，采用图6（a）对应的技术方案比较业务的优先级，若第一阈值为4，存在数据的LCH是黑色填充的优先级数值分别为2、7、8、4、6、10的SL LCH，以及优先级数值分别为3、4、5、6的UL LCH。其中，DST1对应的SL LCG1中的第一个SL LCH的优先级、UL LCG1中的第三个UL LCH的优先级大于或等于第一阈值。即，满足第一条件的LCH为图11中箭头所指示的LCH。
当满足第一条件的业务既可以包括侧行链路业务，又可以包括上行链路业务。上行链路业务为上行链路逻辑信道组，侧行链路业务为侧行链路逻辑信道组。以图11为例，按照图6（a）对应技术方案比较业务优先级，若第一阈值为4，图11中，存在数据的LCG有6个。其中，DST1对应的LCG1的优先级数值是1。同理，DST1对应的LCG2的优先级数值是7，DST2对应的LCG1的优先级数值是4，DST2对应的LCG2的优先级数值是9。UL LCG1的优先级数值是1，DST4对应的LCG1的优先级数值是4。即，LCG优先级大于或等于第一阈值的LCG为虚线框示出的4个LCG。
作为一种可能的实现方式，第一阈值还可以是由终端设备基于一些参数自行确定的数值，比如，终端设备基于第一上行资源大小确定第一阈值。示例性的，若第一上行资源足以承载4个LCG的缓冲状态信息，如图11所示，终端设备可以对存在数据的6个LCG的优先级进行比较，其中，这些LCG的优先级数值分别为1、7、4、9、1、4。则终端设备可以将第一阈值设置为4，以保证优先级大于第一阈值的LCG的个数小于或等于5个。使得第一上行资源足以承载这些LCG的缓冲状态信息。或者，终端设备可以对存在数据的LCH的优先级进行比较，其中，如图11所示，这些LCH的优先级数值分别为2、7、8、4、6、10、3、4、5、6。则终端设备可以将第一阈值设置为4，以保证优先级大于第一阈值的LCG的个数小于或等于5个，使得第一上行资源足以承载这些LCG的缓冲状态信息。
作为一种可能的实现方式，满足第一条件的业务是侧行链路业务，或者上行链路业务。 这种情况下，第一阈值可以与UL BSR和SL BSR的优先级有关。具体的，当UL BSR的优先级高于SL BSR的优先级，满足第一条件的业务，指的是业务优先级大于或等于第一阈值的上行链路业务。当UL BSR的优先级低于SL BSR的优先级，满足第一条件的业务，指的是业务优先级大于或等于第一阈值的侧行链路业务。这里，可以采用图6（a）或图6（b）或图6（c）或本申请实施例其他对应技术方案比较UL BSR和SL BSR的优先级，也可以按照现有技术比较UL BSR和SL BSR的优先级。
这种情况下，在终端设备确定UL BSR和SL BSR的优先级的基础上，可以对高优先级BSR进行截断操作。即限制高优先级BSR中包括的LCG缓冲状态信息的数目。相应的，在这种情况下，第一阈值可以是触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级。第一阈值还可以是预配置数值，网络设备配置的数值，或者终端设备自行确定的数值。其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
以高优先级BSR为SL BSR，第一阈值为低优先级BSR，即UL BSR的存在数据的LCH对应的优先级中具有最高优先级的LCH的优先级为例，在图11中，存在数据的UL LCH以黑色填充，这其中UL LCG1的第三个LCH的优先级最高，则将该LCH的优先级(该优先级数值为3)视为第一阈值。满足第一条件的LCH，指的是优先级大于或等于3的SL LCH，即图11所示的优先级数值为2的SL LCH。或者，满足第一条件的LCG，指的是优先级大于或等于3的SL LCH所在SL LCG，即图11所示的DST1对应的SL LCG1。
以高优先级BSR为SL BSR，第一阈值为低优先级BSR，即UL BSR的存在挂起数据的LCG对应的优先级中具有最高优先级的LCG的优先级为例，在图11中，UL BSR的存在挂起数据的UL LCG有2个，其中，UL LCG1的优先级(数值为1)大于DST4的LCG1的优先级(数值为4)，则将UL LCG1的优先级(数值为1)视为第一阈值。满足第一条件的LCG，指的是优先级大于或等于1的SL LCG，即图11所示的DST1对应的SL LCG1。
S1002、终端设备发送第一BSR。
终端设备发送第一BSR，具体可以实现为：终端设备在第一上行资源上发送第一BSR。
在一种可能的实现方式中，终端设备经判断确定存在满足第一条件的LCH，则仍以图11为例，并结合上述举例，终端设备在第一BSR中封装进满足第一条件的LCH分别所属的LCG，即箭头所指示的4个LCH分别所属LCG(虚线框示出的4个LCG)的缓冲状态信息，这些LCG既可以包括SL LCG，也可以包括UL LCG，或者仅包括SL LCG，或者，仅包括UL LCG，并发送第一BSR。
在一种可能的实现方式中，终端设备经判断确定存在满足第一条件的LCG，则仍以图11为例，并结合上述举例，终端设备在第一BSR中封装进满足第一条件的LCG，即虚线框所示出的4个LCG的缓冲状态信息，并发送第一BSR。
S1003、不存在满足第一条件的业务，终端设备生成/复用第三BSR。
第三BSR包括部分不满足第一条件的业务的缓冲状态信息。
作为一种可能的实现方式，第三BSR包括部分优先级小于第一阈值的业务的缓冲状态信息。示例性的，若第一阈值为4，侧行链路业务优先级分别为：SL LCG1对应的优先级为5，SL LCG2对应的优先级为6，上行链路业务优先级分别为：UL LCG1对应的优先级 为5，UL LCG2对应的优先级为7，则不存在满足第一条件的业务，终端设备生成第三BSR，该第三BSR包括上述4个LCG的缓冲状态信息。
作为一种可能的实现方式，第三BSR包括低优先级BSR中的缓冲状态信息。示例性的，假设SL BSR的优先级高于UL BSR的优先级，侧行链路业务优先级分别为：SL LCG1对应的优先级为5，SL LCG2对应的优先级为6，上行链路业务优先级分别为：UL LCG1对应的优先级为1，UL LCG2对应的优先级为7，若第一阈值为上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级，即第一阈值为1，则由于SL LCG对应的优先级均小于第一阈值，所以不存在满足第一条件的侧行链路业务，终端设备生成第三BSR，该第三BSR包括低优先级BSR，即UL BSR中2个LCG，即UL LCG1和UL LCG2的缓冲状态信息。
需要说明的是，S1004、S1005并非是在S1003之后执行的步骤，而是独立于S1001、S1002、S1003之外的步骤。
现有技术中，当确定SL BSR的优先级高于UL BSR的优先级之后，在第一上行资源上发送包括尽可能多的SL LCG的缓冲状态信息的SL BSR。如此，低优先级业务触发的SL BSR可能占用了第一上行资源中的大部分资源，第一上行资源无法同时承载高优先级业务触发的UL BSR，导致UL BSR的传输被延迟，进而优先级较高的上行链路数据可能被延迟传输。通过本申请实施例的技术方案，终端设备可以在第一上行资源上发送业务优先级较高的LCH所属LCG的缓冲状态信息，或者说发送业务优先级较高的LCG的缓冲状态信息，这些LCG可以是UL LCG，也可以是SL BSR。也就是说，终端设备能够优先发送高优先级业务对应的BSR。如此，网络设备优先为业务优先级较高的数据分配资源，使得终端设备可以在分配的资源上优先传输优先级较高的数据。示例性的，在图11中，按照现有技术，若确定SL BSR的优先级较高，且第一上行资源大小仅能够用于发送2个LCG缓冲状态信息，则终端设备在第一上行资源上发送包括尽可能多的SL LCG缓冲状态信息。但是，图11所示的DST1对应的SL LCG2的优先级(数值7)低于未被上报的UL LCG1的优先级(数值3)，导致包括低优先级业务缓冲状态信息的BSR抢占包括高优先级业务缓冲状态信息的BSR的资源，高优先级业务缓冲状态信息无法优先被发送。而采用本申请实施例的技术方案，终端设备上报业务优先级大于或等于第一阈值的LCG的缓冲状态信息，或上报业务优先级大于或等于第一阈值的LCH所属LCG的缓冲状态信息，使得高优先级业务触发的BSR能优先被发送。
在一种可能的实现方式中，终端设备判断是否存在满足第一条件的高优先级BSR的LCH或LCG，以高优先级BSR为SL BSR为例，终端设备判断是否存在满足第一条件的SL BSR的SL LCH或SL LCG，仍以图11为例，结合上述举例，终端设备在第一BSR中封装进满足第一条件的LCG，即图11所示DST1对应的SL LCG1的缓冲状态信息。如此，终端设备可以通过第一上行资源仅上报高优先级SL LCG的缓冲状态信息，而不上报低优先级SL LCG的缓冲状态信息，避免低优先级SL LCG缓冲状态信息占用高优先级UL LCG缓冲状态信息的资源。能够降低高优先级业务触发的BSR被延迟传输的概率，以提升数据传输效率。
可选的，第一BSR包括不满足第一条件的业务的缓冲状态信息。也就是说，第一BSR不仅包括满足第一条件的业务的缓冲状态信息，还可以包括不满足第一条件的业务的缓冲状态信息。
此种情况下，上述S1001、终端设备发送生成第一BSR，具体可以实现为：终端设备在第一上行资源上根据第一上行资源的大小和低优先级BSR的大小复用第一BSR。
在一种可能的实现方式中，终端设备经判断确定存在满足第一条件的LCH，在生成第一BSR MAC CE时根据第一上行资源的大小以及低优先级BSR的大小，确定第一BSR中包含的LCG的缓存信息的数量。例如，终端设备在第一BSR中封装进满足第一条件的LCH分别所属的LCG的缓冲状态信息，若共有4个LCH分别所属LCG(虚线框示出的4个LCG)的缓冲状态信息，由于第一上行资源大小大于满足第一条件的LCH分别所属的LCG的缓冲状态信息的大小加上低优先级BSR的大小，则终端设备继续按照LCG对应的优先级的顺序(降序或升序)，继续在第一BSR中包括不满足第一条件的LCH所属的LCG的缓存状态信息。
表3
Figure PCTCN2019109778-appb-000004
可选地，如表4，终端设备复用低优先级BSR。可选地，终端设备复用第二BSR。
表4
... 第一BSR 低优先级BSR 第二BSR ...
在上述的各种实现方式中，若第一上行资源中仍有剩余资源，终端设备还可以在第一上行资源上发送其他LCG的缓冲状态信息。比如，终端设备发送第二BSR，第二BSR包括不满足第一条件的业务缓冲状态信息。具体的，第二BSR包括业务优先级小于或等于第一阈值的业务的缓冲状态信息。若第一上行资源中没有剩余资源，或者剩余资源不足以承载第二BSR，则可以通过第二上行资源发送第二BSR。
其中，可选的，第一BSR的格式由第一LCID指示，第二BSR的格式由第二LCID指示。第一LCID可以不同于第二LCID。
第一BSR的格式比如但不限于为截断格式或者短格式或者长格式，第二BSR的格式比如但不限于为截断格式，或者长格式，或者短格式。截断格式可以为长截断格式或者短截断格式。
本申请实施例还提供一种缓冲状态报告上报方法，参见图10(c)，该方法包括如下步骤：
S1101、终端设备确定SL BSR的优先级高于UL BSR。
其中，确定优先级的方法可以是图6(a)、图6(b)、图6(c)或图8、或图9对应的方法。
S1102、终端设备判断是否存在满足第一条件的业务。
S1103(a)、存在满足第一条件的业务，终端设备在第一上行资源上生成/复用第一BSR。第一BSR包括SL LCG的缓冲状态信息。即，这里在第一上行资源上生成/复用第一BSR，指的是在第一上行资源上复用高优先级的SL BSR。
第一条件和第一BSR的具体介绍可参见图10(b)对应技术方案中的相关描述。
S1104、根据第一上行资源中剩余资源的大小以及UL BSR的大小，复用UL BSR。
具体的，在第一上行资源上复用SL BSR之后，第一上行资源中的剩余资源足以容纳UL BSR，终端设备复用UL BSR。剩余资源不足以容纳UL BSR，终端设备仅复用高优先级的SL BSR。其中，SL BSR中按照业务优先级顺序尽可能多地包含侧行链路业务的缓冲状态信息，直到所有需要包括的业务的缓冲状态信息均已包含，或者，第一上行资源无剩余，两个条件满足其一即可。
此外，可选的，存在剩余资源，且足以容纳优先级高于第二BSR的其他数据或信令，其中第二BSR的优先级可以为第二BSR中包含的LCG包括的LCH中具有最高优先级的LCH的优先级，终端设备复用数据和/或其他信令；
此外，可选地，存在剩余资源，且剩余资源大小大于SL BSR大小，生成第二BSR，其中第二BSR中尽可能多地包括不满足第一条件的业务的缓存信息。
或者，可选的，第一BSR不仅包括满足第一条件的业务的缓冲状态信息，还可以包括不满足第一条件的业务的缓冲状态信息，即在第一BSR中按照优先级顺序尽可能多地包含业务的缓冲状态信息，直到所有需要包括的业务的缓冲状态信息均已包含，或者，上行资源无剩余，两个条件满足其一即可。即在第一BSR中可以包含第二BSR的内容。也就是说，存在剩余资源，第一BSR中已经包含满足第一条件的SL LCG/LCH的BSR信息，则终端设备在第一BSR中继续包含存在有效数据且LCH/LCG对应的优先级低于第一阈值和/或存在有效数据的LCH/LCH的BS信息。
S1103(b)、不存在满足第一条件的业务，终端设备生成/复用UL BSR。
上述步骤可以按照先后顺序执行，也可以同时执行。
在本实施例中，SL BSR的优先级高于UL BSR的优先级的情况下，在SL BSR中包含优先级高于第一阈值(比如UL BSR的优先级)的LCH/LCG的BSR信息。若剩余上行资源的大小足以容纳UL BSR，则复用UL BSR。当仍然存在剩余资源，如果存在剩余SL LCG/LCH，则尽可能多地在SL BSR中继续包含优先级低于第一阈值(比如UL BSR的优先级)的SL LCH/LCG的BS信息。
以上结合图5-图11详细说明了本申请实施例提供的缓冲状态报告上报方法。以下结合图12详细说明本申请实施例提供的通信装置。
图12是本申请实施例提供的通信装置的结构示意图二。该通信装置可适用于图3所示出的通信系统中，执行图6(a)和/或图6(b)和/或图6(c)和/或图8和/或图9和/或图10(a)和/或图10(b)和/或图10(c)所示的缓冲状态报告上报方法中终端设备的功能。为了便于说明，图12仅示出了该通信装置的主要部件。
如图12所示，通信装置600包括：处理模块601和收发模块602。
在本申请实施例中，通信装置600可适用于图3所示出的通信系统中，执行图6(a)所示的缓冲状态报告上报方法中终端设备的功能。
其中，处理模块，用于获取侧行链路缓存状态报告SL BSR对应的第一参数和上行 链路缓存状态报告UL BSR对应的第二参数，并根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。第一参数与存在数据的侧行链路业务的优先级相关，第二参数与存在数据的上行链路业务的优先级相关。
在一种可能的设计中，第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
在一种可能的设计中，侧行链路业务包括以下一个或多个：侧行链路服务质量QoS流、侧行链路逻辑信道LCH、侧行链路数据无线承载DRB、侧行链路逻辑信道组LCG、侧行链路业务目标标识、侧行链路分组数据单元会话PDU session。
上行链路业务包括以下一个或多个：上行链路服务质量流、上行链路逻辑信道LCH、上行链路数据无线承载DRB、上行链路逻辑信道组LCG、上行链路业务目标标识、上行链路分组数据单元会话。
在一种可能的设计中，侧行链路业务为SL LCG，第一参数为存在侧行链路数据的一个或多个SL LCG对应的优先级中具有最高优先级的SL LCG的优先级；和/或，上行链路业务为UL LCG，第二参数为存在上行链路数据的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。
在一种可能的设计中，侧行链路业务为SL LCH，第一参数为存在侧行链路数据的一个或多个SL LCH对应的优先级中具有最高优先级的SL LCH的优先级；和/或上行链路业务为UL LCH，第二参数为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH的优先级。
在一种可能的设计中，处理模块，用于根据第一参数和第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级，包括：第一参数大于第二参数，则用于确定SL BSR的优先级高于UL BSR的优先级；第一参数小于第二参数，用于确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，处理模块，还用于存在满足第一条件的业务，生成第一BSR，第一BSR包括满足第一条件的业务的缓冲状态信息。
收发模块，用于发送第一BSR。
其中，第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任一种：预配置的数值，或者网络配置的数值，或者触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级。
其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
在一种可能的设计中，收发模块，还用于发送第二BSR，第二BSR包括不满足第一 条件的业务的缓冲状态信息。
在另一些实施例中，通信装置600也可适用于图3所示出的通信系统中，执行图9和/或图8所示的缓冲状态报告上报方法中终端设备的功能。
处理模块，用于获取第一上行资源的大小，基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，包括：用于第一上行资源大小大于或等于UL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，或者，第一上行资源大小大于或等于UL BSR大小，且第一上行资源大小小于或等于SL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，且第一上行资源大小小于或等于SL BSR大小，确定UL BSR的优先级高于SL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小，确定SL BSR的优先级高于UL BSR的优先级，包括：用于第一上行资源大小大于或等于SL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，或者，第一上行资源大小大于或等于SL BSR大小，且第一上行资源大小小于或等于UL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，且第一上行资源大小小于或等于UL BSR大小，确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，还用于获取SL BSR的第一参数和UL BSR的第二参数。
第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
或者，第一参数为触发SL BSR的侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级，和/或第二参数为触发UL BSR的上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
处理模块，用于基于第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一上行资源的大小、第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于第一上行资源大小小于SL BSR大小，且小于UL BSR大小，则基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
或者，第一上行资源大小大于或等于SL BSR大小，且大于或等于UL BSR大小，则终端设备基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
在一种可能的设计中，处理模块，用于基于第一参数和第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：用于SL BSR的第一参数大于UL BSR的第二参数，则确定SL BSR的优先级高于UL BSR的优先级；SL BSR的第一参数小于UL BSR的第二参数，确定UL BSR的优先级高于SL BSR的优先级。
在另一些实施例中，通信装置600也可适用于图3所示出的通信系统中，执行图10(b)所示的缓冲状态报告上报方法中终端设备的功能。
处理模块，用于生成第一BSR。收发模块，用于发送第一BSR。其中，第一BSR包括满足第一条件的业务的缓冲状态信息；第一条件为业务的优先级大于或等于第一阈值。
在一种可能的设计中，第一BSR不包括不满足第一条件的业务的缓冲状态信息。
在一种可能的设计中，第一阈值包括如下任意一种：预配置的数值，或者，网络设备配置的数值，或者，触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级；其中，UL BSR的优先级高于SL BSR的优先级，低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，低优先级BSR为UL BSR。
在一种可能的设计中，收发模块，还用于发送第二BSR，第二BSR包括不满足第一条件的业务的缓冲状态信息。
可选地，图12的通信装置600还可以包括存储模块，该存储模块存储有程序或指令。当处理模块执行该程序或指令时，使得通信装置600可以执行上述任一项缓冲状态报告上报方法中的终端设备的功能。
需要说明的是，通信装置600可以是终端设备，也可以是设置于终端设备中的芯片或芯片系统，或具有终端功能的其他类型的组件，本申请对此不做限定。
在一种可能的实现方式中，处理模块，可以位于图4所示的处理器中，或者包括处理器和其他必要组件。收发模块，可以为图4所示的收发器203，或者其他收发电路等。存储模块，可以是图4所示的存储器202。
本申请实施例提供一种通信装置。该通信装置用于实现上述各种缓冲状态报告上报方法。该通信装置可以为上述方法实施例的缓冲状态报告上报方法中的终端设备，如车载通信装置，或者包含上述终端设备的装置，比如各种类型的车辆，或者是上述终端设备中包含的装置或部件，比如系统芯片。通信装置包括实现上述缓冲状态报告上报方法相应的模块、单元、或手段(means)，该模块、单元、或手段可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
本申请实施例提供一种芯片系统，该芯片系统包括处理器和输入/输出端口，处理器用于实现上述方法实施例的缓冲状态报告上报方法所涉及的处理功能，输入/输出端口用于实现上述方法实施例的缓冲状态报告上报方法所涉及的收发功能。
在一种可能的设计中，该芯片系统还包括存储器，该存储器用于存储实现上述第一方面至第三方面的缓冲状态报告上报方法所涉及功能的程序指令和数据。
该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例提供一种计算机可读存储介质，包括：该计算机可读存储介质中存 储有计算机指令；当该计算机指令在计算机上运行时，使得该计算机执行上述方法实施例的缓冲状态报告上报方法。
本申请实施例提供了一种包含指令的计算机程序产品，包括计算机程序或指令，当该计算机程序或指令在计算机上运行时，使得该计算机执行上述方法实施例的缓冲状态报告上报方法。
应理解，在本申请实施例中的处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。示例性的，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
上述实施例，可以全部或部分地通过软件、硬件(如电路)、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行计算机指令或计算机程序时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系，但也可能表示的是一种“和/或”的关系，具体可参 考前后文进行理解。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上，仅为本申请的具体实施方式，但本申请的保护范围不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (20)

  1. 一种缓冲状态报告上报方法，其特征在于，包括：
    终端设备获取侧行链路缓存状态报告SL BSR对应的第一参数和上行链路缓存状态报告UL BSR对应的第二参数；
    所述终端设备根据所述第一参数和所述第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级。
  2. 根据权利要求1所述的缓冲状态报告上报方法，其特征在于，所述第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；
    和/或，所述第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级。
  3. [根据细则91更正 23.10.2019]
    根据权利要求2所述的缓冲状态报告上报方法，其特征在于，
    所述侧行链路业务包括以下一个或多个：侧行链路服务质量QoS流、侧行链路逻辑信道LCH、侧行链路数据无线承载DRB、侧行链路逻辑信道组LCG、侧行链路业务目标标识、侧行链路分组数据单元会话PDU session；
    所述上行链路业务包括以下一个或多个：上行链路服务质量流、上行链路逻辑信道LCH、上行链路数据无线承载DRB、上行链路逻辑信道组LCG、上行链路业务目标标识、上行链路分组数据单元会话。
  4. [根据细则91更正 23.10.2019]　
    根据权利要求2或3中任一项所述的方法，其特征在于，所述侧行链路业务为SL LCG，所述第一参数为存在侧行链路数据的一个或多个SL LCG对应的优先级中具有最高优先级的SL LCG的优先级；和/或，所述上行链路业务为UL LCG，所述第二参数为存在上行链路数据的一个或多个UL LCG对应的优先级中具有最高优先级的UL LCG的优先级。
  5. [根据细则91更正 23.10.2019]　
    根据权利要求2至4中任一项所述的缓冲状态报告上报方法，其特征在于，所述侧行链路业务为SL LCH，所述第一参数为存在侧行链路数据的一个或多个SL LCH对应的优先级中具有最高优先级的SL LCH的优先级；和/或所述上行链路业务为UL LCH，所述第二参数为存在上行链路数据的一个或多个UL LCH对应的优先级中具有最高优先级的UL LCH的优先级。
  6. 根据权利要求1至5中任一项所述的缓冲状态报告上报方法，其特征在于，所述终端设备根据所述第一参数和所述第二参数，确定SL BSR的优先级高于UL BSR的优先级，或者，确定UL BSR的优先级高于SL BSR的优先级，包括：
    所述第一参数大于所述第二参数，则所述终端设备确定SL BSR的优先级高于UL BSR的优先级；
    所述第一参数小于或等于所述第二参数，则所述终端设备确定UL BSR的优先级高于SL BSR的优先级。
  7. 根据权利要求1至6中任一项所述的缓冲状态报告上报方法，其特征在于，所述方法还包括：
    存在满足第一条件的业务，所述终端设备生成第一BSR，所述第一BSR包括满足所述第一条件的业务的缓冲状态信息；
    所述终端设备发送所述第一BSR；
    其中，第一条件为业务的优先级大于或等于第一阈值。
  8. 根据权利要求7所述的缓冲状态报告上报方法，其特征在于，所述第一BSR不包括不满足所述第一条件的业务的缓冲状态信息。
  9. 根据权利要求7或8所述的缓冲状态报告上报方法，其特征在于，所述第一阈值包括如下任一种：预配置的数值，或者网络配置的数值，或者触发低优先级BSR的业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级，或者，低优先级BSR对应的存在数据的一个或多个业务对应的优先级中具有最高优先级的业务的优先级；
    其中，UL BSR的优先级高于SL BSR的优先级，所述低优先级BSR为SL BSR；UL BSR的优先级低于SL BSR的优先级，所述低优先级BSR为UL BSR。
  10. 根据权利要求7至9中任一项所述的缓冲状态报告上报方法，其特征在于，所述方法还包括：
    所述终端设备发送第二BSR，所述第二BSR包括不满足所述第一条件的业务的缓冲状态信息。
  11. 一种缓冲状态报告上报方法，其特征在于，包括：
    终端设备获取第一上行资源的大小；
    所述终端设备基于所述第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
  12. 根据权利要求11所述的缓冲状态报告上报方法，其特征在于，所述终端设备基于所述第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，包括：
    第一上行资源大小大于或等于UL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，或者，第一上行资源大小大于或等于UL BSR大小，且第一上行资源大小小于或等于SL BSR大小，或者，第一上行资源大小大于或等于UL BSR和包括至少一个SL LCG的缓冲状态信息的SL BSR的大小，且第一上行资源大小小于或等于SL BSR大小，所述终端设备确定UL BSR的优先级高于SL BSR的优先级。
  13. 根据权利要求11所述的缓冲状态报告上报方法，其特征在于，所述终端设备基于所述第一上行资源的大小，确定SL BSR的优先级高于UL BSR的优先级，包括：
    第一上行资源大小大于或等于SL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，或者，第一上行资源大小大于或等于SL BSR大小，且第一上行资源大小小于或等于UL BSR大小，或者，第一上行资源大小大于或等于SL BSR和包括至少一个UL LCG的缓冲状态信息的UL BSR的大小，且第一上行资源大小小于或等于UL BSR大小，所述终端设备确定SL BSR的优先级高于UL BSR的优先级。
  14. 根据权利要求11所述的缓冲状态报告上报方法，其特征在于，
    所述方法还包括：所述终端设备获取SL BSR的第一参数和UL BSR的第二参数；
    所述第一参数为存在侧行链路数据的一个或多个侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级；和/或，所述第二参数为存在上行链路数据的一个或多个上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级；
    或者，所述第一参数为触发SL BSR的侧行链路业务对应的优先级中具有最高优先级的侧行链路业务的优先级，和/或所述第二参数为触发UL BSR的上行链路业务对应的优先级中具有最高优先级的上行链路业务的优先级；
    所述终端设备基于所述第一上行资源的大小，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：
    所述终端设备基于所述第一上行资源的大小、所述第一参数和所述第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
  15. 根据权利要求14所述的缓冲状态报告上报方法，其特征在于，所述终端设备基于所述第一上行资源的大小、所述第一参数和所述第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：
    第一上行资源大小小于SL BSR大小，且小于UL BSR大小，则所述终端设备基于所述第一参数和所述第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级；
    或者，第一上行资源大小大于或等于SL BSR大小，且大于或等于UL BSR大小，则所述终端设备基于所述第一参数和所述第二参数，所述终端设备确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级。
  16. 根据权利要求15所述的缓冲状态报告上报方法，其特征在于，所述终端设备基于所述第一参数和所述第二参数，确定UL BSR的优先级高于SL BSR的优先级，或者确定SL BSR的优先级高于UL BSR的优先级，包括：
    所述SL BSR的第一参数大于所述UL BSR的第二参数，则所述终端设备确定SL BSR的优先级高于UL BSR的优先级；
    所述SL BSR的第一参数小于所述UL BSR的第二参数，所述终端设备确定UL BSR的优先级高于SL BSR的优先级。
  17. 一种通信装置，其特征在于，所述通信装置包括：处理器，所述处理器与存储器耦合；
    所述存储器，用于存储计算机程序；
    所述处理器，用于执行所述存储器中存储的所述计算机程序，以使得所述通信装置执行如权利要求1-10中任一项所述的缓冲状态报告上报方法。
  18. 一种通信装置，其特征在于，所述通信装置包括：处理器，所述处理器与存储器耦合；
    所述存储器，用于存储计算机程序；
    所述处理器，用于执行所述存储器中存储的所述计算机程序，以使得所述通信装置执行如权利要求11-16中任一项所述的缓冲状态报告上报方法。
  19. 一种芯片系统，其特征在于，所述芯片系统包括处理器和输入/输出端口，所述处理器用于实现如权利要求1-10中任一项所涉及的处理功能，所述输入/输出端口用于实现如权利要求1-10中任一项所涉及的收发功能。
  20. 一种芯片系统，其特征在于，所述芯片系统包括处理器和输入/输出端口，所述处理器用于实现如权利要求11-16中任一项所涉及的处理功能，所述输入/输出端口 用于实现如权利要求11-16中任一项所涉及的收发功能。
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