WO2022111322A1 - 触发边链路中继系统缓存状态报告方法及用户设备、介质 - Google Patents

触发边链路中继系统缓存状态报告方法及用户设备、介质 Download PDF

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WO2022111322A1
WO2022111322A1 PCT/CN2021/130576 CN2021130576W WO2022111322A1 WO 2022111322 A1 WO2022111322 A1 WO 2022111322A1 CN 2021130576 W CN2021130576 W CN 2021130576W WO 2022111322 A1 WO2022111322 A1 WO 2022111322A1
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status report
buffer status
base station
user equipment
detected
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PCT/CN2021/130576
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English (en)
French (fr)
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曹春燕
刘星
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展讯半导体(南京)有限公司
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Publication of WO2022111322A1 publication Critical patent/WO2022111322A1/zh

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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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a method for triggering a buffer status report of a side link relay system, a user equipment, and a medium.
  • LTE introduced proximity based services (Proximity based services, ProSe) direct communication.
  • ProSe proximity based services
  • Different user equipments User Equipment, UE
  • the communication interface between the user equipment and the user equipment is the PC5 interface
  • the communication interface between the user equipment and the base station is the Uu interface.
  • 3GPP 3rd Generation Partnership Project
  • 3GPP 3rd Generation Partnership Project
  • UE A in direct communication can relay service data through other UE B to implement communication with the base station.
  • an existing UE-to-network Relay scene graph is given.
  • the Remote UE not only maintains the communication link with the base station (gNB), but also establishes a relay link with a Relay UE (relay device).
  • the communication interface between the Remote UE and the gNB is the Uu interface
  • the communication interface between the Relay UE and the gNB is the Uu interface
  • the communication interface between the Relay UE and the Remote UE is the PC5 interface.
  • the control plane (Control Plane, CP) of the Remote UE is separated from the user plane (User Plane, UP).
  • the CP information is sent by the direct link between the Remote UE and the gNB.
  • the CP information includes Radio Resource Control (RRC) and low-level information.
  • the low-level information includes Schedul Request (SR), Buffer Status Report (Buffer Status). Report, BSR), MAC CE (media access control-control elements), etc.
  • the UP data is sent by the relay link between the Remote UE and the base station, that is, sent via the Relay UE.
  • the base station when sending UP data through the Relay UE, the base station does not know the size of the data buffered in the Relay UE, so it cannot allocate corresponding communication resources to the Relay UE in a targeted manner, resulting in low utilization of communication resources and transmission delay. higher.
  • the embodiments of the present invention solve the technical problems that the base station cannot allocate corresponding communication resources to the relay UE, resulting in low utilization rate of communication resources and high transmission delay.
  • an embodiment of the present invention provides a method for triggering a buffer status report of a side link relay system, including: determining a resource allocation mode configured to autonomously select communication resources from a preconfigured resource pool; When a preset trigger condition is met, a buffer status report is sent to the base station, so that the base station can learn the amount of data buffered by the relay device according to the buffer status report.
  • the sending a buffer status report to the base station when it is detected that a preset trigger condition is met includes: sending the buffer status report to the base station when it is detected that there is a data sending requirement.
  • sending a buffer status report to the base station includes: when detecting that a communication resource is selected from the resource pool, sending the buffer status report to the base station .
  • the sending a buffer status report to the base station when it is detected that a preset trigger condition is met includes: when it is detected that data is to be sent to the relay device, sending the buffer status report to the base station .
  • the cache status report includes indication information, where the indication information is used to indicate at least one of the following: a resource allocation manner corresponding to the cache status report is to autonomously select communication resources from a preconfigured resource pool, and the The resource allocation method corresponding to the buffer status report allocates communication resources to the base station.
  • an embodiment of the present invention also provides a user equipment, including: a determining unit, configured to determine a resource allocation mode configured to autonomously select communication resources from a preconfigured resource pool; a sending unit, configured to When it is detected that a preset trigger condition is met, a buffer status report is sent to the base station, so that the base station can learn the amount of data buffered by the relay device according to the buffer status report.
  • a determining unit configured to determine a resource allocation mode configured to autonomously select communication resources from a preconfigured resource pool
  • a sending unit configured to When it is detected that a preset trigger condition is met, a buffer status report is sent to the base station, so that the base station can learn the amount of data buffered by the relay device according to the buffer status report.
  • the sending unit is configured to send the buffer status report to the base station when it is detected that there is a need for data sending.
  • the sending unit is configured to send the buffer status report to the base station when detecting that the communication resource is selected from the resource pool.
  • the sending unit is configured to send the buffer status report to the base station when it is detected that data is to be sent to the relay device.
  • the cache status report includes indication information, where the indication information is used to indicate at least one of the following: a resource allocation manner corresponding to the cache status report is to autonomously select communication resources from a preconfigured resource pool, and the The resource allocation method corresponding to the buffer status report allocates communication resources to the base station.
  • Embodiments of the present invention further provide a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor When performing any of the above-mentioned steps of triggering the buffer status reporting method of the side link relay system.
  • An embodiment of the present invention further provides a user equipment, including a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned when running the computer program Any one of the steps for triggering the method for reporting the buffer status of the side link relay system.
  • the user equipment When the user equipment is configured to autonomously select the resource allocation mode of communication resources from the resource pool, if it detects that the trigger condition is met, it sends a buffer status report to the base station, so that the base station can learn the current buffer of the relay device according to the received buffer status report. Then, the corresponding communication resources are configured for the relay equipment in a targeted manner, so as to improve the utilization rate of communication resources and reduce the transmission delay.
  • indication information is carried in the cache status report, and the indication information is used to indicate a resource allocation manner corresponding to the cache status report.
  • the base station After receiving the buffer status report, the base station can distinguish which resource allocation mode the user equipment is in in the buffer status report, so as to allocate corresponding communication resources for different resource allocation modes in a targeted manner.
  • Figure 1 is an existing UE-to-network Relay scene diagram
  • Fig. 2 is a kind of existing Remote UE control plane and user plane separation schematic diagram
  • FIG. 3 is a flowchart of a method for triggering a buffer status report of a side link relay system according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a user equipment in an embodiment of the present invention.
  • the user equipment corresponds to the Remote UE in FIG. 1 and FIG. 2
  • the relay device corresponds to the Relay UE in FIG. 1 and FIG. 2
  • the base station corresponds to Figure 1, the gNB in Figure 2.
  • the mode 1 resource allocation method is the resource allocation method of centralized scheduling by the base station, that is, the user equipment sends a communication resource request message to the base station, and the base station sends the corresponding communication resource to the user equipment after receiving the communication resource request message.
  • the mode 2 resource allocation method is a resource allocation method independently selected by the user equipment, that is, the base station pre-configures the resource pool, and the user equipment autonomously selects communication resources in the pre-configured resource pool through perception.
  • the user equipment does not need to report the BSR to the base station, and the base station cannot know the amount of data buffered in the relay device, so that the base station cannot allocate the corresponding communication to the relay device. resources, resulting in low utilization of communication resources and high transmission delay.
  • the user equipment when configured to autonomously select the resource allocation mode of the communication resources from the resource pool, if it detects that the trigger condition is met, it sends a buffer status report to the base station, so that the base station can report the buffer status according to the received buffer status.
  • the report learns the amount of data currently buffered by the relay device, and then configures the corresponding communication resources for the relay device in a targeted manner, improving the utilization rate of communication resources and reducing the transmission delay.
  • An embodiment of the present invention provides a method for triggering a buffer status report of a side link relay system. Referring to FIG. 3 , the following will describe in detail through specific steps.
  • the method for reporting the buffer status of the triggering side link relay system may be executed by a chip (such as a baseband chip) with a data processing function in the user equipment, or by the user equipment including It is executed by a chip module of a chip with data processing functions (such as a baseband chip).
  • a chip such as a baseband chip
  • data processing functions such as a baseband chip
  • Step S301 Determine a resource allocation mode configured to autonomously select communication resources from a preconfigured resource pool.
  • the mode 1 resource allocation method is the resource allocation method of centralized scheduling by the base station, that is, the user equipment sends a communication resource request message to the base station, and the base station sends the corresponding communication resource to the user equipment after receiving the communication resource request message.
  • the mode 2 resource allocation method is a resource allocation method independently selected by the user equipment, that is, the base station pre-configures the resource pool, and the user equipment autonomously selects communication resources in the pre-configured resource pool through perception.
  • a resource allocation mode configured to autonomously select communication resources from a pre-configured resource pool is determined, that is, corresponding to the above-mentioned mode 2 resource allocation mode.
  • Step S302 sending a buffer status report to the base station when it is detected that a preset trigger condition is satisfied.
  • the user equipment can detect whether a preset trigger condition is satisfied. When it is determined that the preset trigger condition is satisfied, the user equipment may send a buffer status report to the base station.
  • the user equipment when the user equipment detects that there is a data sending requirement, it may determine that a preset trigger condition is satisfied. At this time, the user equipment may send a buffer status report to the base station.
  • the user equipment Since the user equipment is configured in the mode 2 resource allocation mode, the data to be uploaded needs to be forwarded by the relay device. Therefore, when the user equipment needs to send data, that is, when the user equipment needs to send data to the base station, it can send the buffer to the base station. status report. After receiving the buffer status report, the base station can know the size of the data buffered at the relay device, and then allocate corresponding communication resources to the relay device.
  • the user equipment when the user equipment detects that a communication resource is selected from a preconfigured resource pool, it may determine that a preset trigger condition is satisfied, and the user equipment may send a buffer status report to the base station.
  • the user equipment When the user equipment selects the communication resource from the pre-configured resource pool, it means that the user equipment has data that needs to be sent. Since the data to be uploaded by the user equipment needs to be forwarded through the relay device, when the user equipment needs to send data, that is, when the user equipment needs to send data to the base station, it can send a buffer status report to the base station. After receiving the buffer status report, the base station can know the amount of data buffered at the relay device, and then allocate corresponding communication resources to the relay device.
  • the user equipment when the user equipment detects that data is to be sent to the relay device, it may determine that a preset trigger condition is satisfied, and the user equipment may send a buffer status report to the base station.
  • the user equipment When the user equipment is ready to send data to the relay device, it means that the user equipment is about to send the data to be uploaded to the relay device. Since the data to be uploaded by the user equipment needs to be forwarded via the relay device, the user equipment sends a buffer status report to the base station. After receiving the buffer status report, the base station can know the size of the data buffered at the relay device, and then allocate corresponding communication resources to the relay device.
  • the user equipment uses the mode 1 resource allocation method, it will report BSR information to the base station to inform the base station of the amount of data currently buffered by the user equipment, so that the base station can know how much communication resources the user equipment needs.
  • the user equipment uses the mode 2 resource allocation method, the user equipment directly selects communication resources from the resource pool, and does not need to report BSR information to the base station.
  • the user equipment when the user equipment uses the mode 2 resource allocation method, if it detects that the trigger condition is met, it sends a buffer status report to the base station, so that the base station can know the current buffer status of the relay device according to the received buffer status report.
  • the amount of data, and then the corresponding communication resources are configured for the relay device, so as to improve the utilization rate of communication resources and reduce the transmission delay.
  • the buffer status report sent by the user equipment to the base station may further include indication information, and the indication information may be used to indicate a resource allocation manner corresponding to the reported buffer status report.
  • the indication information is used to indicate at least one of the following: the resource allocation method corresponding to the buffer status report is to autonomously select communication resources from a pre-configured resource pool, and the resource allocation method corresponding to the buffer status report is to allocate communication resources to the base station resource.
  • the indication information is used to indicate that the reported buffer status report is the buffer status report corresponding to the mode 1 resource allocation method, and/or the indicator information is used to indicate that the reported buffer status report is the buffer corresponding to the mode 2 resource allocation method. status report.
  • the base station can know whether the currently configured resource allocation mode of the user equipment is mode 1 or mode 2, so that the base station can specify whether to configure communication resources for the user equipment or for the relay equipment. , and then allocate corresponding communication resources to the user equipment or the relay device for data transmission.
  • a user equipment 40 in an embodiment of the present invention including: a determining unit 401 and a sending unit 402, wherein:
  • a determining unit 401 configured to determine a resource allocation mode configured to autonomously select communication resources from a preconfigured resource pool;
  • the sending unit 402 is configured to send a buffer status report to the base station when it is detected that a preset trigger condition is satisfied, so that the base station can know the amount of data buffered by the relay device according to the buffer status report.
  • the sending unit 402 may be configured to send the buffer status report to the base station when it is detected that there is a need for data sending.
  • the sending unit 402 may be configured to send the buffer status report to the base station when it is detected that a communication resource is selected from the resource pool.
  • the sending unit 402 may be configured to send the buffer status report to the base station when it is detected that data is to be sent to the relay device.
  • the cache status report may include indication information, where the indication information is used to indicate at least one of the following: a resource allocation manner corresponding to the cache status report is to autonomously select communication resources from a preconfigured resource pool, The resource allocation manner corresponding to the buffer status report allocates communication resources to the base station.
  • each module/unit included in each device and product described in the above embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit, a part of which is a software module/unit. is a hardware module/unit.
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some of the modules/units may be implemented by a software program.
  • Running on the processor integrated inside the chip the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some of the modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented by software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor At runtime, the steps of the method for triggering a buffer status report of a side link relay system provided by any of the above embodiments are executed.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor At runtime, the steps of the method for triggering a buffer status report of a side link relay system provided by any of the above embodiments are executed.
  • An embodiment of the present invention further provides another user equipment, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes any of the foregoing when the computer program runs.
  • An embodiment provides the steps of a method for triggering a buffer status report of a side link relay system.

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Abstract

一种触发边链路中继系统缓存状态报告方法及用户设备、介质，所述方法包括：确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。上述方案能够使得基站获知中继设备当前缓存的数据量，进而针对性地为中继设备分配相应的通信资源，提高通信资源利用率，降低传输时延。

Description

触发边链路中继系统缓存状态报告方法及用户设备、介质
本申请要求于2020年11月27日提交中国专利局、申请号为202011364804.1、发明名称为“触发边链路中继系统缓存状态报告方法及用户设备、介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种触发边链路中继系统缓存状态报告方法及用户设备、介质。
背景技术
在Release 12中，LTE引入了邻近业务(proximity based services，ProSe)直接通信。不同的用户设备(User Equipment，UE)之间可以直接通信。用户设备与用户设备之间的通信接口为PC5接口，用户设备与基站之间的通信接口为Uu接口。3GPP(3 rd Generation Partnership Project，3GPP)的系统和业务方面工作组在研究ProSe直接通信的系统架构时，引入了UE-to-network Relay(中继)通信架构，该架构能够使得不能直接与基站进行直接通信的UE A可以通过其他UE B来中继业务数据以实现与基站的通信。
如图1所示，给出了现有的一种UE-to-network Relay场景图。Remote UE既保持与基站(gNB)之间的通信链路，又与一个Relay UE(中继设备)建立中继链路。Remote UE与gNB之间的通信接口为Uu接口，Relay UE与gNB之间的通信接口为Uu接口，Relay UE与Remote UE之间的通信接口为PC5接口。
Remote UE的控制平面(Control Plane，CP)与用户平面(User Plane，UP)分离，如图2所示，给出了现有的一种Remote UE控制平面与用户平面分离示意图。CP信息由Remote UE与gNB之间的直接链路发送，CP信息包括无线资源控制(Radio Resource Control，RRC)和低层信息，低层信息包括调度请求(Schedul Request，SR)、缓存状态报告(Buffer Status Report，BSR)、MAC CE(media access control-control elements)等。UP数据由Remote UE和基站之间的relay链路发送，也即经由Relay UE发送。
然而，在经由Relay UE发送UP数据时，基站并不知道Relay UE中缓存的数据量的大小，因此无法针对性地为Relay UE分配相应的通信资源，导致通信资源利用率较低，传输时延较高。
发明内容
本发明实施例解决的是基站无法为Relay UE分配相应的通信资源，导致通信资源利用率较低，传输时延较高的技术问题。
为解决上述技术问题，本发明实施例提供一种触发边链路中继系统缓存状态报告方法，包括：确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。
可选的，所述在检测到满足预设的触发条件时，向基站发送缓存状态报告，包括：在检测到存在数据发送需求时，向所述基站发送所述缓存状态报告。
可选的，所述在检测到满足预设的触发条件时，向基站发送缓存状态报告，包括：在检测到从所述资源池中选取通信资源时，向所述基站发送所述缓存状态报告。
可选的，所述在检测到满足预设的触发条件时，向基站发送缓存 状态报告，包括：在检测到准备向所述中继设备发送数据时，向所述基站发送所述缓存状态报告。
可选的，所述缓存状态报告包括指示信息，所述指示信息用于指示以下至少一种：所述缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源，所述缓存状态报告对应的资源分配方式为所述基站分配通信资源。
为解决上述技术问题，本发明实施例还提供了一种用户设备，包括：确定单元，用于确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；发送单元，用于在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。
可选的，所述发送单元，用于在检测到存在数据发送需求时，向所述基站发送所述缓存状态报告。
可选的，所述发送单元，用于在检测到从所述资源池中选取通信资源时，向所述基站发送所述缓存状态报告。
可选的，所述发送单元，用于在检测到准备向所述中继设备发送数据时，向所述基站发送所述缓存状态报告。
可选的，所述缓存状态报告包括指示信息，所述指示信息用于指示以下至少一种：所述缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源，所述缓存状态报告对应的资源分配方式为所述基站分配通信资源。
本发明实施例还提供一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述所述的任一种触发边链路中继系统缓存状态报告方法的步骤。
本发明实施例还提供一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运 行所述计算机程序时执行上述所述的任一种触发边链路中继系统缓存状态报告方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
当用户设备被配置为从资源池中自主选择通信资源的资源分配方式时，若检测到满足触发条件，向基站发送缓存状态报告，使得基站能够根据接收到的缓存状态报告获知中继设备当前缓存的数据量，进而针对性的为中继设备配置相应的通信资源，提高通信资源利用率，降低传输时延。
进一步，在缓存状态报告中携带指示信息，指示信息用于指示缓存状态报告对应的资源分配方式。基站在接收到缓存状态报告后，即可区分该缓存状态报告是用户设备处于哪种资源分配方式，从而针对性为不同资源分配方式分配对应的通信资源。
附图说明
图1是现有的一种UE-to-network Relay场景图；
图2是现有的一种Remote UE控制平面与用户平面分离示意图；
图3是本发明实施例中的一种触发边链路中继系统缓存状态报告方法的流程图；
图4是本发明实施例中的一种用户设备的结构示意图。
具体实施方式
在本发明实施例中，如无特殊说明，所述的用户设备对应图1、图2中的Remote UE，所述的中继设备对应图1、图2中的Relay UE，所述的基站对应图1、图2中的gNB。
在现有技术中，在NR sidelink中存在两种资源分配方式，分别为mode 1资源分配方式和mode 2资源分配方式。mode 1资源分配方 式为基站集中调度的资源分配方式，即用户设备向基站发送通信资源请求消息，基站在接收到通信资源请求消息之后，为用户设备下发对应的通信资源。mode 2资源分配方式为用户设备自主选择的资源分配方式，即基站预先配置资源池，用户设备在预先配置的资源池中通过感知的方式自主选择通信资源。
在sidelink relay通信系统中，针对mode 2资源分配方式中，用户设备不需要向基站上报BSR，基站无法获知中继设备中缓存的数据量，导致基站无法针对性地为中继设备分配相应的通信资源，导致通信资源利用率较低，传输时延较高。
在本发明实施例中，当用户设备被配置为从资源池中自主选择通信资源的资源分配方式时，若检测到满足触发条件，向基站发送缓存状态报告，使得基站能够根据接收到的缓存状态报告获知中继设备当前缓存的数据量，进而针对性的为中继设备配置相应的通信资源，提高通信资源利用率，降低传输时延。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
本发明实施例提供了一种触发边链路中继系统缓存状态报告方法，参照图3，以下通过具体步骤进行详细说明。
在具体实施中，下述步骤S301～步骤S302所提供的触发边链路中继系统缓存状态报告方法可以由用户设备中具有数据处理功能的芯片(如基带芯片)执行，或者由用户设备中包含有数据处理功能的芯片(如基带芯片)的芯片模组执行。
步骤S301，确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式。
在实际应用中可知，在NR sidelink中存在两种资源分配方式，分别为mode 1资源分配方式和mode 2资源分配方式。mode 1资源分配方式为基站集中调度的资源分配方式，即用户设备向基站发送通信 资源请求消息，基站在接收到通信资源请求消息之后，为用户设备下发对应的通信资源。mode 2资源分配方式为用户设备自主选择的资源分配方式，即基站预先配置资源池，用户设备在预先配置的资源池中通过感知的方式自主选择通信资源。
因此，在本发明实施例中，确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式，即对应上述的mode 2资源分配方式。
步骤S302，在检测到满足预设的触发条件时，向基站发送缓存状态报告。
在具体实施中，用户设备可以检测是否满足预设的触发条件。在确定满足预设的触发条件时，用户设备可以向基站发送缓存状态报告。
在本发明实施例中，当用户设备检测到存在数据发送需求时，可以确定满足预设的触发条件。此时，用户设备可以向基站发送缓存状态报告。
由于用户设备被配置为mode 2资源分配方式，其所要上传的数据需要经由中继设备转发，因此，当用户设备存在数据发送需求，也即用户设备需要向基站发送数据时，可以向基站发送缓存状态报告。基站在接收到缓存状态报告后，即可获知中继设备处缓存的数据量的大小，进而为中继设备分配相应的通信资源。
在本发明实施例中，当用户设备检测到从预先配置的资源池中选取通信资源时，可以确定满足预设的触发条件，用户设备可以向基站发送缓存状态报告。
当用户设备从预先配置的资源池中选取通信资源时，意味着用户设备存在数据需要发送。由于用户设备所要上传的数据需要经由中继设备转发，因此，当用户设备存在数据发送需求，也即用户设备需要向基站发送数据时，可以向基站发送缓存状态报告。基站在接收到缓 存状态报告后，即可获知中继设备处缓存的数据量的大小，进而为中继设备分配相应的通信资源。
在本发明实施例中，当用户设备检测到准备向中继设备发送数据时，可以确定满足预设的触发条件，用户设备可以向基站发送缓存状态报告。
当用户设备准备向中继设备发送数据时，意味着用户设备即将把所要上传的数据发送至中继设备。由于用户设备所要上传的数据需要经由中继设备转发，因此，用户设备向基站发送缓存状态报告。基站在接收到缓存状态报告后，即可获知中继设备处缓存的数据量的大小，进而为中继设备分配相应的通信资源。
在现有协议中可知，当用户设备使用mode 1资源分配方式时，会向基站上报BSR信息，以告知基站用户设备当前缓存的数据量，使得基站获知用户设备需要多少通信资源。当用户设备使用mode 2资源分配方式时，用户设备直接从资源池中选择通信资源，不需要向基站上报BSR信息。
而在本发明实施例中，当用户设备使用mode 2资源分配方式时，若检测到满足触发条件，向基站发送缓存状态报告，使得基站能够根据接收到的缓存状态报告获知中继设备当前缓存的数据量，进而针对性的为中继设备配置相应的通信资源，从而能够提高通信资源利用率，降低传输时延。
在具体实施中，用户设备向基站发送的缓存状态报告中，还可以包括指示信息，指示信息可以用于指示上报的缓存状态报告对应的资源分配方式。在本发明实施例中，指示信息用于指示以下至少一种：缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源、缓存状态报告对应的资源分配方式为基站分配通信资源。
换而言之，指示信息用于指示上报的缓存状态报告为mode 1资 源分配方式对应的缓存状态报告，和/或，指示信息用于指示上报的缓存状态报告为mode 2资源分配方式对应的缓存状态报告。
通过在缓存状态报告中携带指示信息，能够使得基站获知用户设备当前被配置的资源分配方式为mode 1还是mode 2，从而使得基站能够明确是为用户设备配置通信资源还是为中继设备分配通信资源，进而为用户设备或中继设备分配相应的通信资源以用于数据传输。
参照图4，给出了本发明实施例中的一种用户设备40，包括：确定单元401以及发送单元402，其中：
确定单元401，用于确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；
发送单元402，用于在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。
在具体实施中，所述发送单元402，可以用于在检测到存在数据发送需求时，向所述基站发送所述缓存状态报告。
在具体实施中，所述发送单元402，可以用于在检测到从所述资源池中选取通信资源时，向所述基站发送所述缓存状态报告。
在具体实施中，所述发送单元402，可以用于在检测到准备向所述中继设备发送数据时，向所述基站发送所述缓存状态报告。
在具体实施中，所述缓存状态报告可以包括指示信息，所述指示信息用于指示以下至少一种：所述缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源，所述缓存状态报告对应的资源分配方式为所述基站分配通信资源。
在具体实施中，上述的确定单元401以及发送单元402的具体执行流程可以参照上述实施例中提供的步骤S301～步骤S302，本发明实施例此处不做赘述。
在具体实施中，关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。
例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述任一实施例提供的触发边链路中继系统缓存状态报告方法的步骤。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述任一实施例提供的触发边链路中继系统缓存状态报告方法的步骤。
本发明实施例还提供了另一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理 器运行所述计算机程序时执行上述任一实施例提供的触发边链路中继系统缓存状态报告方法的步骤。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指示相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (12)

  1. 一种触发边链路中继系统缓存状态报告方法，其特征在于，包括：
    确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；
    在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。
  2. 如权利要求1所述的触发边链路中继系统缓存状态报告方法，其特征在于，所述在检测到满足预设的触发条件时，向基站发送缓存状态报告，包括：
    在检测到存在数据发送需求时，向所述基站发送所述缓存状态报告。
  3. 如权利要求1所述的触发边链路中继系统缓存状态报告方法，其特征在于，所述在检测到满足预设的触发条件时，向基站发送缓存状态报告，包括：
    在检测到从所述资源池中选取通信资源时，向所述基站发送所述缓存状态报告。
  4. 如权利要求1所述的触发边链路中继系统缓存状态报告方法，其特征在于，所述在检测到满足预设的触发条件时，向基站发送缓存状态报告，包括：
    在检测到准备向所述中继设备发送数据时，向所述基站发送所述缓存状态报告。
  5. 如权利要求1所述的触发边链路中继系统缓存状态报告方法，其特征在于，所述缓存状态报告包括指示信息，所述指示信息用于指示以下至少一种：所述缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源，所述缓存状态报告对应的资源分配方式为所述基站分配通信资源。
  6. 一种用户设备，其特征在于，包括：
    确定单元，用于确定被配置为从预先配置的资源池中自主选择通信资源的资源分配方式；
    发送单元，用于在检测到满足预设的触发条件时，向基站发送缓存状态报告，以使得所述基站根据所述缓存状态报告获知中继设备缓存的数据量。
  7. 如权利要求6所述的用户设备，其特征在于，所述发送单元，用于在检测到存在数据发送需求时，向所述基站发送所述缓存状态报告。
  8. 如权利要求6所述的用户设备，其特征在于，所述发送单元，用于在检测到从所述资源池中选取通信资源时，向所述基站发送所述缓存状态报告。
  9. 如权利要求6所述的用户设备，其特征在于，所述发送单元，用于在检测到准备向所述中继设备发送数据时，向所述基站发送所述缓存状态报告。
  10. 如权利要求6所述的用户设备，其特征在于，所述缓存状态报告包括指示信息，所述指示信息用于指示以下至少一种：所述缓存状态报告对应的资源分配方式为从预先配置的资源池中自主选择通信资源，所述缓存状态报告对应的资源分配方式为所述基站分配通信资源。
  11. 一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1～5任一项所述的触发边链路中继系统缓存状态报告方法的步骤。
  12. 一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1～5任一项所述的触发边链路中继系统缓存状态报告方法的步骤。
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