WO2022082681A1 - 无线通信方法、装置及系统 - Google Patents

无线通信方法、装置及系统 Download PDF

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Publication number
WO2022082681A1
WO2022082681A1 PCT/CN2020/123010 CN2020123010W WO2022082681A1 WO 2022082681 A1 WO2022082681 A1 WO 2022082681A1 CN 2020123010 W CN2020123010 W CN 2020123010W WO 2022082681 A1 WO2022082681 A1 WO 2022082681A1
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WIPO (PCT)
Prior art keywords
terminal device
information
auxiliary information
sidelink transmission
mode
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PCT/CN2020/123010
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English (en)
French (fr)
Inventor
李翔宇
彭文杰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP20958263.4A priority Critical patent/EP4224924A4/en
Priority to CN202080106290.1A priority patent/CN116368852B/zh
Priority to PCT/CN2020/123010 priority patent/WO2022082681A1/zh
Publication of WO2022082681A1 publication Critical patent/WO2022082681A1/zh
Priority to US18/304,080 priority patent/US12581517B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to wireless communication methods, devices, and systems.
  • data communication between terminal equipment and terminal equipment may be performed through network equipment, or communication between terminal equipment and terminal equipment may be performed directly without the aid of network equipment.
  • the interface between the terminal device and the terminal device is called the PC5 interface, which is similar to the Uu interface between the terminal device and the network device.
  • a link between a terminal device and a terminal device is called a sidelink (SL).
  • FIG. 1 is a schematic diagram of direct communication between a terminal device and a terminal device through a PC5 interface.
  • Embodiments of the present application provide a wireless communication method, device, and system, so as to realize reasonable and effective allocation of sidelink transmission resources, thereby improving the efficiency of sidelink communication.
  • information A is used to indicate another information or feature, such as information B, which may include any of the following situations:
  • Information A includes information B;
  • Index or identification information indicating the information B for example, information A indicates information B from one or more candidate information B, and each candidate information B in the one or more candidate information B corresponds to a unique index, which is used to identify the candidate information B; or,
  • the information A is used to determine the information B.
  • the information B can be obtained by performing mathematical operations or filtering on the information A.
  • “special purpose” or “special purpose” in the following implementation of the present application may be understood as specified, network configuration or protocol predefined. “Specially” can also be expressed as “specific”, “designated”, and the like.
  • the "dedicated scheduling request” in the embodiment of the present application can also be expressed as “specific scheduling request”, “specified scheduling request”, etc., which means: the scheduling request is limited to a specific purpose and cannot be used for other purposes .
  • the “dedicated resource” in the embodiments of the present application can also be expressed as “specific resource”, “designated resource”, etc., which means that the resource is limited to a specific purpose and cannot be used for other purposes.
  • specific descriptions in the following embodiments refer to the specific descriptions in the following embodiments.
  • the "dedicated buffer status report” in the embodiment of the present application can also be expressed as "specific buffer status report”, “specified buffer status report”, etc., which means: the resource is limited to a specific purpose , cannot be used for other purposes.
  • specific buffer status report the resource is limited to a specific purpose , cannot be used for other purposes.
  • dedicated scheduling request can also be directly simplified and expressed as “scheduling request”
  • dedicated resource can also be directly simplified and expressed as “resource”
  • dedicated buffer status report can also be directly expressed as “dedicated buffer status report”. Shorthand for "buffer status report”.
  • an embodiment of the present application provides a wireless communication method.
  • the method can be executed by a first terminal device or a chip.
  • the method includes the following steps: acquiring mode information of a second terminal device, where the mode information is used to indicate the second terminal device. Resource scheduling mode of the terminal device; according to the mode information, send auxiliary information to the second terminal device, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the first terminal device provides the second terminal with auxiliary information for indicating one or more sets of sidelink transmission resources based on the mode information of the second terminal device, so that the second terminal device or the network device can Allocating or determining sidelink transmission resources for the second terminal device to transmit sidelink data based on one or more sets of sidelink transmission resources indicated by the auxiliary information can reduce resource conflicts or resource waste. Therefore, reasonable and effective allocation of sidelink transmission resources can be achieved, thereby improving the efficiency of sidelink communication.
  • the acquiring the mode information of the second terminal device includes: receiving the mode information from the second terminal device.
  • the first terminal device can directly acquire the mode information of the second terminal device from the second terminal device, so that the mode information of the second terminal device can be accurately acquired.
  • the acquiring the mode information of the second terminal device includes: receiving the mode information of the second terminal from the network device.
  • the first terminal device does not need to obtain the mode information of the second terminal device from the second terminal device, but obtains the mode information of the second terminal device from the network device, so that the interaction between the terminal devices can be reduced.
  • the energy consumption of the second terminal device is reduced and the signaling overhead on the sidelink is reduced.
  • the acquiring the mode information of the second terminal device includes: acquiring the mode information of the second terminal device from the first terminal device, wherein the mode information in the first terminal device is pre-configured of.
  • the mode information of the second terminal device is pre-configured in the first terminal device, so that the first terminal device does not need to obtain the mode information of the second terminal device from the external device, which reduces the number of differences between the first terminal device and the external device. interaction, thereby reducing the energy consumption of the first terminal device.
  • a first request is sent to the second terminal device, where the first request is used to request to acquire the mode information.
  • the first terminal device when the first terminal device needs to acquire the mode information of the second terminal device, it sends a first request to the second terminal device, so that the second terminal device sends the second terminal device to the first terminal device based on the first request. mode information of the second terminal device, so that when the first terminal device does not need the mode information of the second terminal device, the second terminal device still sends the mode information of the second terminal device to the first terminal device, thereby reducing unnecessary overhead.
  • the sending auxiliary information to the second terminal device according to the mode information includes: determining that the mode information indicates that the second terminal device is in the network device scheduling mode and the autonomous competition mode, and sending the auxiliary information to the second terminal device.
  • the terminal device sends the auxiliary information; or, it is determined that the mode information indicates that the second terminal device is in an autonomous competition mode, and the auxiliary information is sent to the second terminal device.
  • the auxiliary information is sent to the second terminal device only when it is determined that the second terminal device is in the network device scheduling mode and the autonomous competition mode, or in the autonomous competition mode, so as to avoid the second terminal device from sending the auxiliary information to the second terminal device when the auxiliary information is not needed.
  • the two terminal devices send auxiliary information, thereby reducing unnecessary information interaction and reducing energy consumption.
  • acquiring a first sidelink transmission resource for sending the auxiliary information sending auxiliary information to the second terminal device according to the mode information, including: according to the mode information, in the first
  • the first information is sent to the second terminal device on one side of the uplink transmission resource, where the first information carries the auxiliary information.
  • the acquiring the first sidelink transmission resource used for sending the assistance information includes: sending a dedicated scheduling request to the network device on the dedicated resource, where the dedicated scheduling request is used to request allocation of Sending the sidelink transmission resource of the first information; and receiving the first sidelink transmission resource from the network device.
  • the dedicated resource is determined according to the format of the first information; wherein, the dedicated resources corresponding to the first information of different formats are different, and the side row indicated by the auxiliary information carried by the first information of different formats Link transmission resources vary in size.
  • the dedicated resource is determined according to the size of the first information; wherein, the dedicated resources corresponding to the first information of different sizes are different, and the side row indicated by the auxiliary information carried by the first information of different sizes Link transmission resources vary in size.
  • the size of the first sidelink transmission resource is smaller than the size of the sidelink transmission resource required by the auxiliary information to be transmitted, and the truncated first information is generated.
  • the auxiliary information carried by a message is less than the auxiliary information to be transmitted.
  • the acquiring the first sidelink transmission resource for sending the auxiliary information includes: sending a buffer status report to the network device, where the buffer status report is used to request allocation for sending the auxiliary information
  • the sidelink transmission resource of the first information, the buffer status report indicates the size of the auxiliary information to be transmitted; and the first sidelink transmission resource from the network device is received.
  • the obtaining the first sidelink transmission resource for sending the assistance information includes: sending a scheduling request to the network device on a non-dedicated resource (such as a public resource), the scheduling The request is used for requesting allocation of sidelink transmission resources for sending the first information; and receiving the first sidelink transmission resources from the network device.
  • a non-dedicated resource such as a public resource
  • the non-dedicated resource is determined according to the format of the first information; wherein, the non-dedicated resources corresponding to the first information of different formats are different, and the auxiliary information carried by the first information of different formats indicates Sidelink transmission resources vary in size.
  • the non-dedicated resource is determined according to the size of the first information; wherein, the non-dedicated resources corresponding to the first information of different sizes are different, and the auxiliary information carried by the first information of different sizes indicates Sidelink transmission resources vary in size.
  • the buffer status report carries a dedicated target index
  • the dedicated target index is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated target index is associated with the auxiliary information to be transmitted. size corresponds to.
  • the buffer status report carries a dedicated logical channel group identifier
  • the dedicated logical channel group identifier is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated logical channel group identifier is the same as The size of the auxiliary information to be transmitted corresponds to.
  • the buffer status report is a dedicated buffer status report.
  • the target index carried in the buffer status report may also be a non-dedicated target index, such as a public target index, and the public target index may be used to request allocation of sidelink transmission for sending auxiliary information resource.
  • the logical channel group identifier carried in the buffer status report may also be a non-dedicated logical channel group identifier, such as a common logical channel group identifier, and the common logical channel group identifier can be used to request allocation for sending Sidelink transmission resources for side information.
  • the buffer status report is a non-dedicated buffer status report.
  • An example is the public buffer status report.
  • the first information includes any one of the following: SCI, PC5-RRC signaling, SL MAC CE.
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the indication information in the first-level SCI indicates the information carried by the second-level SCI.
  • the size of this auxiliary information may specifically indicate the format of the second-level SCI, or the size of the second-level SCI, or indicate that the second-level SCI is a normal SCI or a truncated SCI.
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • auxiliary information is carried in the first-level SCI.
  • the method before sending the auxiliary information to the second terminal device, the method further includes: determining that a preset policy condition is satisfied; wherein, the preset policy condition includes: the CBR of the first terminal device , RSRP, RSRQ, RSSI, SINR, or the value of one or more parameters of the battery reaches a preset threshold or range.
  • an embodiment of the present application provides a wireless communication method.
  • the method can be executed by a second terminal device or a chip.
  • the method includes the following steps: receiving auxiliary information from the first terminal device, where the auxiliary information is used to indicate a set of or multiple sets of sidelink transmission resources; the auxiliary information is processed according to the mode information of the second terminal device, where the mode information is used to indicate the resource scheduling mode of the second terminal device.
  • the first terminal device provides the second terminal with auxiliary information for indicating one or more sets of sidelink transmission resources based on the mode information of the second terminal device, so that the second terminal device or the network device can Determining or allocating sidelink transmission resources for the second terminal device to transmit sidelink data based on one or more sets of sidelink transmission resources indicated by the auxiliary information can reduce resource conflicts or resource waste. In this case, a reasonable and effective allocation of sidelink transmission resources can be achieved, thereby improving the efficiency of sidelink communication.
  • the processing of the auxiliary information according to the mode information of the second terminal device includes: the mode information is used to indicate that the second terminal device is in an autonomous competition mode, and according to the auxiliary information, determining the auxiliary information for A first sidelink transmission resource for transmitting sidelink data of the second terminal device.
  • the processing of the auxiliary information according to the mode information of the second terminal device includes: the mode information is used to indicate that the second terminal device is in an autonomous competition mode and a network device scheduling mode, or is in a network device Device scheduling mode, sending the auxiliary information to the network device, where the auxiliary information is used to generate a first sidelink transmission resource, and the first sidelink transmission resource is used to transmit the sidelink of the second terminal device data.
  • one or more sets of sidelink transmission resources indicated by the auxiliary information include preferred sidelink transmission resources, and the first sidelink transmission resource corresponds to the preferred use
  • the first sidelink transmission resource is used preferentially or only for the second terminal device to send sidelink data to the first terminal device.
  • the sidelink resources used by the second terminal device to send the sidelink data to the first terminal device are determined based on the sidelink resources that are preferably used by the first terminal device, it is possible to The sidelink resources that can be used for sending sidelink data to the first terminal device can be quickly determined, and the occurrence of resource conflict or resource waste can be reduced.
  • the first sidelink transmission resource is preferentially used or only used for the second terminal device to send sidelink data to the first terminal device, including: based on the sidelink logic
  • the target terminal equipment selected by the channel priority mechanism includes the first terminal equipment.
  • one or more sets of sidelink transmission resources indicated by the auxiliary information include sidelink transmission resources that are preferably not used, and the first sidelink transmission resources correspond to the preferred sidelink transmission resources.
  • the first sidelink transmission resources are not used for the second terminal device to send sidelink data to the first terminal device.
  • the sidelink resources used for sending sidelink data are determined based on the sidelink resources that are preferably not used provided by the first terminal device, it is possible to avoid selecting the sidelink resources that are preferably not used.
  • the uplink resource sends sidelink data to the first terminal device, so that the occurrence of resource conflict or resource waste can be reduced.
  • the first sidelink transmission resource is not used for the second terminal device to send sidelink data to the first terminal device, including: selecting based on a sidelink logical channel priority mechanism
  • the target terminal device does not include the first terminal device.
  • the processing of the auxiliary information according to the mode information of the second terminal device includes: the mode information is used to indicate that the second terminal device is in an autonomous competition mode and a network device scheduling mode, or is in a network device Device scheduling mode, discarding or ignoring this auxiliary information.
  • the mode information is sent to the first terminal device.
  • the first terminal device can directly acquire the mode information of the second terminal device from the second terminal device, so that the mode information of the second terminal device can be accurately acquired.
  • a first request from the first terminal device is received, where the first request is used to request to acquire the mode information.
  • the first terminal device when the first terminal device needs to acquire the mode information of the second terminal device, it sends a first request to the second terminal device, so that the second terminal device sends the second terminal device to the first terminal device based on the first request.
  • the mode information of the second terminal device is prevented from being sent by the second terminal device to the first terminal device when the mode information of the second terminal device is not required by the first terminal device, thereby reducing unnecessary overhead.
  • a second request is sent to the first terminal device, where the second request is used to request to obtain auxiliary information.
  • the second terminal device when the second terminal device needs to acquire auxiliary information, it sends a second request to the first terminal device, so that the first terminal device sends the auxiliary information to the second terminal device based on the second request, thereby avoiding when the second terminal device
  • the first terminal device still sends the auxiliary information to the second terminal device, so that unnecessary information overhead can be reduced.
  • the preset policy condition includes: one or more parameters of CBR, RSRP, RSRQ, RSSI, SINR or power of the second terminal device The value reaches a preset threshold or range.
  • an embodiment of the present application provides a wireless communication method, the method can be executed by a first terminal device or a chip, and the method includes the following steps: sending a dedicated scheduling request to a network device on a dedicated resource, where the dedicated scheduling request is used for Request allocation of sidelink transmission resources for sending sidelink control information; receive first sidelink transmission resources from the network device; on the first sidelink transmission resources, to the second terminal
  • the device sends sidelink control information, where the sidelink control information carries auxiliary information, and the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the sidelink control information carries a set of or Multiple sets of sidelink transmission resources, that is, the auxiliary information is sent to the second terminal device through the sidelink control information, so that the second terminal device or the network device can refer to one or more sets of the auxiliary information indicated by the Sidelink transmission resources are used to allocate or determine the sidelink transmission resources used by the second terminal device to transmit sidelink data, which can reduce the occurrence of resource conflicts or resource waste, so that the sidelink transmission can be realized.
  • Reasonable and effective allocation of transmission resources can improve the efficiency of sidelink communication.
  • the dedicated resource is determined according to the format of the sidelink control information; wherein, the dedicated resources corresponding to the sidelink control information of different formats are different, and the sidelink control information of different formats The sizes of the sidelink transmission resources indicated by the carried auxiliary information are different.
  • the dedicated resource is determined according to the size of the sidelink control information; wherein, the dedicated resources corresponding to the sidelink control information of different sizes are different, and the sidelink control information of different sizes corresponds to different dedicated resources.
  • the sizes of the sidelink transmission resources indicated by the carried auxiliary information are different.
  • the auxiliary information carried in the sidelink control information is less than the auxiliary information to be transmitted.
  • a scheduling request may also be sent to the network device on a non-dedicated resource (such as a public resource), where the scheduling request is used to request allocation of sidelink transmission resources used for sending sidelink control information; Receive a first sidelink transmission resource from the network device; on the first sidelink transmission resource, send sidelink control information to a second terminal device, where the sidelink control information carries auxiliary information , the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • a non-dedicated resource such as a public resource
  • the non-dedicated resource is determined according to the format of the sidelink control information; wherein, the non-dedicated resources corresponding to the sidelink control information of different formats are different, and the sidelink control information of different formats has different non-dedicated resources.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in the control information are different.
  • the non-dedicated resource is determined according to the size of the sidelink control information; wherein, the non-dedicated resources corresponding to the sidelink control information of different sizes are different, and the sidelinks of different sizes have different non-dedicated resources.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in the control information are different.
  • an embodiment of the present application provides a wireless communication method, the method can be executed by a first terminal device or a chip, and the method includes the following steps: sending a buffer status report to a network device, where the buffer status report is used to request allocation The sidelink transmission resource used for sending the sidelink control information, the buffer status report indicates the size of the auxiliary information to be transmitted; the first sidelink transmission resource from the network device is received; On the sidelink transmission resources, send sidelink control information to the second terminal device, where the sidelink control information carries auxiliary information, and the auxiliary information is used to indicate one or more sets of sidelink transmission resources .
  • a buffer status report can be used to request allocation of sidelink resources for transmitting sidelink control information, where the sidelink control information carries a set of or multiple sets of sidelinks.
  • Transmission resources that is, the auxiliary information is sent to the second terminal device through the sidelink control information, so that the second terminal device or the network device can refer to one or more sets of sidelink transmission resources indicated by the auxiliary information.
  • to allocate or determine the sidelink transmission resources used for the second terminal device to transmit sidelink data which can reduce the occurrence of resource conflicts or resource waste, so as to achieve reasonable and effective allocation of sidelink transmission resources. , thereby improving the efficiency of sidelink communication.
  • the buffer status report carries a dedicated target index
  • the dedicated target index is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated target index is associated with the auxiliary information to be transmitted. size corresponds to.
  • the target index carried in the buffer status report may also be a non-dedicated target index, such as a public target index, and the public target index may be used to request allocation of sidelink transmission for sending auxiliary information resource.
  • the logical channel group identifier carried in the buffer status report may also be a non-dedicated logical channel group identifier, such as a common logical channel group identifier, and the common logical channel group identifier can be used to request allocation for sending Sidelink transmission resources for side information.
  • the buffer status report is a non-dedicated buffer status report.
  • An example is the public buffer status report.
  • the buffer status report carries a dedicated logical channel group identifier
  • the dedicated logical channel group identifier is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated logical channel group identifier is the same as The size of the auxiliary information to be transmitted corresponds to.
  • the buffer status report is a dedicated buffer status report.
  • mode information from the second terminal device is received, where the mode information is used to indicate that the second terminal device is in an autonomous competition mode, or in an autonomous contention mode and a network device scheduling mode.
  • a first request is sent to the second terminal device, where the first request is used to request to acquire the mode information.
  • a second request from the second terminal device is received, where the second request is used for requesting to obtain auxiliary information.
  • the preset policy condition includes: one or more parameters of CBR, RSRP, RSRQ, RSSI, SINR or power of the first terminal device The value reaches a preset threshold or range.
  • an embodiment of the present application provides a wireless communication method.
  • the method can be executed by a first terminal device or a chip.
  • the method includes the following steps: acquiring mode information of a second terminal device, where the mode information is used to indicate the second terminal device.
  • the resource scheduling mode of the terminal device according to the mode information, it is judged whether to send auxiliary information to the second terminal device, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the first terminal device determines whether to send auxiliary information to the second terminal device based on the mode information of the second terminal device.
  • the auxiliary information can be sent only when the auxiliary information needs to be sent to the second terminal device, which can reduce unnecessary signaling overhead.
  • the second terminal device or the network device can refer to the one or more sets of sidelink transmission resources indicated by the auxiliary information. transmission resources to allocate or determine the sidelink transmission resources used for the second terminal device to transmit sidelink data, which can reduce the occurrence of resource conflicts or resource waste, and thus can realize the rationalization of sidelink transmission resources. Efficient allocation, thereby improving the efficiency of sidelink communication.
  • determining whether to send auxiliary information to the second terminal device according to the mode information includes: determining that the mode information indicates that the second terminal device is in the network device scheduling mode and the autonomous competition mode, then determining to send the auxiliary information to the second terminal device.
  • the second terminal device sends the auxiliary information; or, if it is determined that the mode information indicates that the second terminal device is in an autonomous competition mode, then it is determined to send the auxiliary information to the second terminal device; or, it is determined that the mode information indicates that the second terminal device is in the autonomous competition mode. If the terminal device is in the network device scheduling mode, it is determined not to send the auxiliary information to the second terminal device.
  • the auxiliary information is sent to the second terminal device only when it is determined that the second terminal device is in the network device scheduling mode and the autonomous competition mode, or in the autonomous competition mode, so as to avoid the second terminal device from sending the auxiliary information to the second terminal device when the auxiliary information is not needed.
  • the two terminal devices send auxiliary information, thereby reducing unnecessary information interaction and reducing energy consumption.
  • the acquiring the mode information of the second terminal device includes: receiving the mode information from the second terminal device.
  • the first terminal device can directly acquire the mode information of the second terminal device from the second terminal device, so that the mode information of the second terminal device can be accurately acquired.
  • the acquiring the mode information of the second terminal device includes: receiving the mode information of the second terminal from the network device.
  • the first terminal device does not need to obtain the mode information of the second terminal device from the second terminal device, but obtains the mode information of the second terminal device from the network device, so that the interaction between the terminal devices can be reduced.
  • the energy consumption of the second terminal device is reduced and the signaling overhead on the sidelink is reduced.
  • the acquiring the mode information of the second terminal device includes: acquiring the mode information of the second terminal device from the first terminal device, wherein the mode information in the first terminal device is pre-configured of.
  • the mode information of the second terminal device is pre-configured in the first terminal device, so that the first terminal device does not need to obtain the mode information of the second terminal device from the external device, which reduces the number of differences between the first terminal device and the external device. interaction, thereby reducing the energy consumption of the first terminal device.
  • a first request is sent to the second terminal device, where the first request is used to request to acquire the mode information.
  • the first terminal device when the first terminal device needs to acquire the mode information of the second terminal device, it sends a first request to the second terminal device, so that the second terminal device sends the second terminal device to the first terminal device based on the first request. mode information of the second terminal device, so that when the first terminal device does not need the mode information of the second terminal device, the second terminal device still sends the mode information of the second terminal device to the first terminal device, thereby reducing unnecessary overhead.
  • obtain the first sidelink transmission resource for sending the auxiliary information; determine that the mode information indicates that the second terminal device is in the network device scheduling mode and the autonomous competition mode, then determine to send the Sending the auxiliary information by the second terminal device includes: determining that the mode information indicates that the second terminal device is in the network device scheduling mode and the autonomous contention mode, then determining to send the auxiliary information to the second terminal device on the first sidelink transmission resource the auxiliary information.
  • the auxiliary information includes: determining that the mode information indicates that the second terminal device is in an autonomous contention mode, and then determining to send the auxiliary information to the second terminal device on the first sidelink transmission resource.
  • the acquiring the first sidelink transmission resource used for sending the assistance information includes: sending a dedicated scheduling request to the network device on the dedicated resource, where the dedicated scheduling request is used to request allocation of Sending the sidelink transmission resource of the first information; and receiving the first sidelink transmission resource from the network device.
  • the dedicated resource is determined according to the format of the first information; wherein, the dedicated resources corresponding to the first information of different formats are different, and the side row indicated by the auxiliary information carried by the first information of different formats Link transmission resources vary in size.
  • the dedicated resource is determined according to the size of the first information; wherein, the dedicated resources corresponding to the first information of different sizes are different, and the side row indicated by the auxiliary information carried by the first information of different sizes Link transmission resources vary in size.
  • the size of the first sidelink transmission resource is smaller than the size of the sidelink transmission resource required by the auxiliary information to be transmitted, and the truncated first information is generated.
  • the auxiliary information carried by a message is less than the auxiliary information to be transmitted.
  • the acquiring the first sidelink transmission resource for sending the auxiliary information includes: sending a buffer status report to the network device, where the buffer status report is used to request allocation for sending the auxiliary information
  • the sidelink transmission resource of the first information, the buffer status report indicates the size of the auxiliary information to be transmitted; and the first sidelink transmission resource from the network device is received.
  • the obtaining the first sidelink transmission resource for sending the assistance information includes: sending a scheduling request to the network device on a non-dedicated resource (such as a public resource), the scheduling The request is used for requesting allocation of sidelink transmission resources for sending the first information; and receiving the first sidelink transmission resources from the network device.
  • a non-dedicated resource such as a public resource
  • the non-dedicated resource is determined according to the format of the first information; wherein, the non-dedicated resources corresponding to the first information of different formats are different, and the auxiliary information carried by the first information of different formats indicates Sidelink transmission resources vary in size.
  • the non-dedicated resource is determined according to the size of the first information; wherein, the non-dedicated resources corresponding to the first information of different sizes are different, and the auxiliary information carried by the first information of different sizes indicates Sidelink transmission resources vary in size.
  • the buffer status report carries a dedicated target index
  • the dedicated target index is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated target index is associated with the auxiliary information to be transmitted. size corresponds to.
  • the buffer status report carries a dedicated logical channel group identifier
  • the dedicated logical channel group identifier is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated logical channel group identifier is the same as The size of the auxiliary information to be transmitted corresponds to.
  • the buffer status report is a dedicated buffer status report.
  • the target index carried in the buffer status report may also be a non-dedicated target index, such as a public target index, and the public target index may be used to request allocation of sidelink transmission for sending auxiliary information resource.
  • the logical channel group identifier carried in the buffer status report may also be a non-dedicated logical channel group identifier, such as a common logical channel group identifier, and the common logical channel group identifier can be used to request allocation for sending Sidelink transmission resources for side information.
  • the buffer status report is a non-dedicated buffer status report.
  • An example is the public buffer status report.
  • the first information includes any one of the following: SCI, PC5-RRC signaling, SL MAC CE.
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the indication information in the first-level SCI indicates the information carried by the second-level SCI.
  • the size of this auxiliary information may specifically indicate the format of the second-level SCI, or the size of the second-level SCI, or indicate that the second-level SCI is a normal SCI or a truncated SCI.
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • auxiliary information is carried in the first-level SCI.
  • the method before sending the auxiliary information to the second terminal device, the method further includes: determining that a preset policy condition is satisfied; wherein, the preset policy condition includes: CBR, RSRP, RSRQ, The value of one or more parameters of RSSI, SINR or power reaches a preset threshold or range.
  • an embodiment of the present application provides a communication apparatus, where the apparatus may be a first terminal device or a chip used for the first terminal device.
  • the device has the function of implementing each implementation method of the first aspect, the third aspect, the fourth aspect or the fifth aspect. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication apparatus, and the apparatus may be a second terminal device or a chip used for the second terminal device.
  • the device has the function of implementing each implementation method of the second aspect above. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer-executed instructions, and when the device is running, the processor executes the computer-executed instructions stored in the memory, so that the The apparatus executes the implementation methods of the above-mentioned first to fifth aspects.
  • an embodiment of the present application provides a communication apparatus, including a unit or means for performing each step of each implementation method of the above-mentioned first aspect to the fifth aspect.
  • an embodiment of the present application provides a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit, and execute each implementation method of the above-mentioned first to fifth aspects.
  • the processor includes one or more.
  • an embodiment of the present application provides a communication device, including a processor, which is connected to a memory and used to call a program stored in the memory to execute the implementation methods of the first to fifth aspects above.
  • the memory may be located within the device or external to the device.
  • the processor includes one or more.
  • embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, each of the first to fifth aspects above The implementation method is executed.
  • embodiments of the present application further provide a computer program product, where the computer product includes a computer program, and when the computer program runs, the implementation methods of the above-mentioned first to fifth aspects are executed.
  • an embodiment of the present application further provides a chip system, including: a processor configured to execute the implementation methods of the first to fourth aspects above.
  • an embodiment of the present application further provides a communication system, including a first terminal device for executing any implementation method of the foregoing first aspect, and/or a first terminal device for executing any implementation method of the foregoing second aspect Two terminal equipment.
  • an embodiment of the present application further provides a communication system, including a first terminal device for executing any implementation method of the third aspect, and/or a first terminal device for executing any implementation method of the second aspect. Two terminal equipment.
  • an embodiment of the present application further provides a communication system, including a first terminal device for executing any implementation method of the fourth aspect, and/or a first terminal device for executing any implementation method of the second aspect. Two terminal equipment.
  • an embodiment of the present application further provides a communication system, including a first terminal device for executing any implementation method of the fifth aspect, and/or a first terminal device for executing any implementation method of the second aspect. Two terminal equipment.
  • Fig. 1 is a schematic diagram of direct communication between terminal equipment and terminal equipment through PC5 interface
  • FIG. 2 is an SL communication scenario to which this embodiment of the application is applicable
  • Fig. 3 is the format schematic diagram of SL BSR
  • FIG. 4 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a communication device according to an embodiment of the present application.
  • the terminal device is a device with a wireless communication transceiving function or an apparatus or a chip system in the device having a wireless communication transceiving function.
  • the terminal device in the embodiment of the present application supports sidelink communication and can be deployed on land It can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, an industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety , wireless terminals in smart cities, wireless terminals in smart homes, user equipment (UE), in-vehicle communication devices, in-vehicle communication chips, roadside units or communications in roadside units device etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • a network device is a device that provides wireless communication services for terminal devices, and is usually located on the network side.
  • the network device includes but is not limited to: a next-generation base station (g nodeB) in the fifth generation (5th generation, 5G).
  • g nodeB next-generation base station
  • eNB evolved node B
  • baseband unit baseBand unit
  • TRP transmission point
  • TP transmission point
  • V2X A device that provides wireless communication services for terminal equipment in a communication system, etc.
  • the first terminal device and the second terminal device may be located within the coverage of a same network device, or may be located within the coverage of different network devices. Or one terminal device is located in the coverage of the network device, and another terminal device is out-of-coverage of the network device. Or both end devices are outside the coverage of the network device.
  • the embodiments of the present application may be applied to a long term evolution (long term evolution, LTE) system, a new radio (New radio, NR) system, or a next-generation wireless local area network system, and the like.
  • the transmission of the SL requires the terminal device to obtain resources in advance to send data.
  • resources on the SL there are the following ways to obtain resources on the SL:
  • Mode 1 It can also be called network device scheduling mode. Similar to the Uu port, before sending SL data, the terminal device first reports the SL buffer status report (Buffer Status Report, BSR) to the network device, telling the network device how much sidelink data to send, and then the network device passes the SL grant A sidelink transmission resource of a corresponding size is allocated to the terminal device for transmitting sidelink data. Or for periodic services, the terminal device reports the attributes of the periodic service (including start time, period, packet size, etc.), and then the network device configures periodic side link transmission resources for the terminal device, and the terminal device subsequently It is no longer necessary to frequently report BSRs to obtain sidelink transmission resources.
  • BSR Buffer Status Report
  • Mode 2 It can also be called the autonomous competition mode. For example, by measuring whether each time-frequency resource in the preconfigured SL resource pool is occupied, an empty and unoccupied resource is selected for transmission, which does not depend on the scheduling of the network device at this time.
  • Mode 1 and Mode 2 It can also be called Mode 1+Mode 2, or network device scheduling mode and autonomous competition mode.
  • Mode 1+Mode 2 or network device scheduling mode and autonomous competition mode.
  • the terminal device When the terminal device is in the network device scheduling mode and the autonomous competition mode, it can be understood that the terminal device supports both mode 1 and mode 2, that is, the terminal device can use the network device scheduling mode or the autonomous competition mode to obtain resources.
  • SL BSR is described below.
  • the terminal device before sending SL data, the terminal device first reports the SL BSR to the network device to inform the network device how much sidelink data to send, and then the network device allocates the corresponding size of the side link to the terminal device through the SL grant.
  • Downlink transmission resources for transmitting sidelink data Exemplarily, the format of the SL BSR is shown in Figure 3.
  • the SL BSR includes one or more destination group information, and each destination group information includes a destination index (destination index), a logical channel group ID (Logical Channel Group ID, LCG ID), and a buffer size (buffer size).
  • the destination index is used to indicate a corresponding destination (destination), and the destination may be a single terminal device, or a group of terminal devices, and may also be a destination converted from a broadcast service. That is, the target index is used to indicate a data recipient, and the data recipient may be one or more terminal devices.
  • the logical channel group identifier is used to indicate a group of logical channels (Logical channel, LCH), and the logical channel indicated by the logical channel group identifier has data to be transmitted.
  • LCH Logical channel
  • the buffer size is used to indicate the size of the effective data amount calculated according to the SL data amount.
  • the buffer size corresponds to one logical channel group under one target.
  • the data sent to the same target may have different priorities (for example, there are logical channel groups with different priorities), there may be the same target index in a SL BSR, and these same targets
  • the logical channel group identifiers corresponding to the indexes are different, and different logical channel group identifiers correspond to different logical channel groups.
  • the same SL BSR can also contain multiple different target indexes, that is, the same terminal device can request to send data to multiple terminal devices at the same time.
  • SL logical channel priority (Logical Channel Prioritization, LCP) mechanism. It should be noted that SL LCP is only executed every time a new pass is made.
  • the terminal device After the terminal device obtains the sidelink transmission resources from the network device, it needs to determine which LCHs data of which destination the sidelink transmission resources are used to transmit, including the following two steps:
  • Step 1 Select destination.
  • the terminal device selects the destination corresponding to the LCHs with the highest priority and satisfying the first condition. For another example, the terminal device selects the destination corresponding to the MAC CE with the highest priority and satisfying the first condition in the medium access control element (MAC CE) associated with unicast, multicast, and broadcast.
  • MAC CE medium access control element
  • the first condition may be one or more of the following: there is valid SL transmission data, SBj is greater than zero, and SL-CG type1 is allowed to be used (if it is SL grant, it corresponds to configured grant type1).
  • SL-CG is the abbreviation of sidelink configured grant.
  • SBj represents the number of tokens currently available in the token bucket maintained by the jth logical channel corresponding to a destination.
  • the terminal device selects LCHs that satisfy the second condition and are associated with the destination selected in step 1.
  • the second condition can be one or more of the following: there is valid SL transmission data, SL-CG type1 is allowed to be used (if it is SL grant, it corresponds to configured grant type1), and the one selected in step 1 Hybrid automatic repeat request (HARQ) feedback enabled/disabled properties corresponding to LCHs are the same.
  • SL-CG type1 is allowed to be used (if it is SL grant, it corresponds to configured grant type1)
  • HARQ Hybrid automatic repeat request
  • the first terminal device may send auxiliary information for indicating one or more sets of sidelink transmission resources to the second terminal device, so that The second terminal device or the network device may allocate or determine sidelink transmission resources for the second terminal device to transmit sidelink data based on one or more sets of sidelink transmission resources indicated with reference to the auxiliary information , which can reduce the occurrence of resource conflict or resource waste, so that reasonable and effective allocation of sidelink transmission resources can be achieved, thereby improving the efficiency of sidelink communication.
  • the second terminal device may be based on auxiliary information received from the first terminal device (the auxiliary information indicates one or more sets of sidelink transmission resources) and/or pre-configured for the second terminal device
  • the allocated resource pool is used to determine the sidelink transmission resources used for transmitting the sidelink data.
  • one or more sets of sidelink transmission resources indicated by the auxiliary information belong to a part of a resource pool pre-allocated for the second terminal device, that is, one or more sets of sidelink transmission resources indicated by the auxiliary information
  • the uplink transmission resources are included in the resource pool pre-allocated for the second terminal device.
  • the embodiment of the present application is not limited to the auxiliary information indicating the relationship between one or more sets of sidelink transmission resources and the resource pool pre-allocated for the second terminal device, and there may be no corresponding relationship between the two.
  • the second terminal device may send the auxiliary information received from the first terminal device to the network device, so that the network device allocates the second terminal device for sending sidelinks based on the reference to the auxiliary information. Sidelink transmission resources for data.
  • the second terminal device when it is in mode 1+mode 2, it may determine the sidelink for sending the sidelink based on the auxiliary information received from the first terminal device and/or the resource pool pre-allocated for the second terminal device. or send the auxiliary information received from the first terminal device to the network device, so that the network device allocates the second terminal device for sending the sidelink based on the auxiliary information by referring to the auxiliary information. sidelink transmission resources for the data.
  • the first terminal device when the first terminal device needs to send physical sidelink shared channel (Pysical Sidelink Share Channel, PSSCH) data to the second terminal device, it first requests the network device for sending sidelink control information (Sidelink Control Information, SCI) and resources corresponding to PSSCH, the SCI is used to indicate the transmission of PSSCH data. That is, in the background art, only when there is PSSCH data to be transmitted, the first terminal device can be triggered to request resources for sending SCI from the network device.
  • PSSCH Physical Sidelink Share Channel
  • SCI Sidelink Control Information
  • the first terminal device carries the auxiliary information in the SCI and sends it to the second terminal device, there will be the following problems: because the first terminal device may not be accompanied by the subsequent PSSCH when sending the auxiliary information based on the SCI.
  • Data transmission in other words, the first terminal device needs to send an SCI carrying auxiliary information to the second terminal device, but the SCI does not indicate the transmission of subsequent PSSCH data, at this time, the first terminal device will not be able to trigger based on the data to be transmitted.
  • Request resources from the network device for sending the SCI For example, in mode 1, the first terminal device does not have the corresponding LCH data to be transmitted, and cannot request sidelink transmission resources for sending SCI through a Scheduling Request (SR) or BSR.
  • SR Scheduling Request
  • the second terminal device may cause that the second terminal device does not perform sidelink transmission according to the instructions of the auxiliary information, which affects resource utilization and reduces sidelink transmission quality.
  • the auxiliary information sent by the first terminal device to the second terminal device is used to indicate one or more sets of sidelink transmission resources.
  • the auxiliary information may include, for example, sidelink transmission resources.
  • the second terminal device may use the set or sets of sidelink transmission resources to send sidelink data to the first terminal device or other terminal devices.
  • Embodiments 1 to 3 are respectively used to solve different problems, and the three embodiments can be implemented independently of each other, or can be implemented in combination with each other.
  • This embodiment is used to solve the above problem 1, that is, when does the first terminal device send auxiliary information to the second terminal device.
  • FIG. 4 it is a schematic diagram of a wireless communication method provided by an embodiment of the present application. This method is the first implementation method for solving the above problem 1.
  • the method includes the following steps:
  • Step 401 The first terminal device acquires mode information of the second terminal device, where the mode information is used to indicate the resource scheduling mode of the second terminal device.
  • Step 402 The first terminal device determines, according to the mode information of the second terminal device, whether to send auxiliary information to the second terminal device, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the mode information is used to indicate that the resource scheduling mode of the second terminal device is one or more of mode 1, mode 2, and mode 1+mode 2.
  • the mode 1 refers to the network device scheduling mode
  • the mode 2 refers to the autonomous competition mode
  • the mode 1+mode 2 refers to the network device scheduling mode and the autonomous competition mode. It is easy to understand that the mode information is used to indicate the resource scheduling mode of the second terminal device, and it can also be understood that the mode information includes information indicating the resource scheduling mode of the second terminal device.
  • the mode information includes a field or a bit indicating the resource scheduling mode of the second terminal device.
  • the transmission is performed based on the SL resources scheduled by the network device, so the second terminal device may only be in mode 2, or in mode 1+mode 2 (that is, in mode 1 and mode 2 at the same time).
  • the SL transmission may be performed using the auxiliary information of the first terminal device. Therefore, when the first terminal device acquires that the mode information of the second terminal device is mode 1, the first terminal device determines not to send auxiliary information to the second terminal device. When the first terminal device acquires that the mode information of the second terminal device is mode 2 or mode 1+mode 2, the first terminal device sends auxiliary information to the second terminal device.
  • the method for the first terminal device to obtain the mode information of the second terminal device includes but is not limited to the following methods a to d:
  • the second terminal device actively sends the mode information of the second terminal device to the first terminal device.
  • the second terminal device does not need to send the mode information of the second terminal device to the first terminal device based on the request of the first terminal device, but actively sends the mode information of the second terminal device to the first terminal device, Thus, information interaction and overhead can be reduced.
  • the first terminal device sends a mode information request message (also referred to as a first request) to the second terminal device, which is used to request to acquire mode information of the second terminal device, and the second terminal device sends the mode information request message to the second terminal device based on the mode information request message.
  • the first terminal device sends the mode information of the second terminal device.
  • the first terminal device when the first terminal device needs to acquire the mode information of the second terminal device, it sends a first request to the second terminal device, so that the second terminal device sends the second terminal device to the first terminal device based on the first request. mode information of the second terminal device, so that when the first terminal device does not need the mode information of the second terminal device, the second terminal device still sends the mode information of the second terminal device to the first terminal device, thereby reducing unnecessary overhead.
  • the mode information may be carried in the first information and sent to the first terminal device.
  • the first information may be, for example, PC5-Radio Resource Control (RRC) signaling, PC5-S message, SL MAC CE or SCI.
  • RRC Radio Resource Control
  • the first terminal device receives the mode information of the second terminal from the network device.
  • the network device sends the mode information of the second terminal device to the first terminal device.
  • the first terminal device does not need to obtain the mode information of the second terminal device from the second terminal device, but obtains the mode information of the second terminal device from the network device, so that the interaction between the terminal devices can be reduced.
  • the energy consumption of the second terminal device is reduced.
  • the mode information of the second terminal device is acquired from the first terminal device.
  • the first terminal device obtains the mode information of the second terminal device locally.
  • the mode information of the second terminal device stored in the first terminal device may be pre-configured.
  • the mode information of the second terminal device is pre-configured in the first terminal device, so that the first terminal device does not need to obtain the mode information of the second terminal device from the external device, which reduces the number of differences between the first terminal device and the external device. interaction, thereby reducing the energy consumption of the first terminal device.
  • the second terminal device can obtain the auxiliary information in time, the transmission quality of the SL can be guaranteed.
  • FIG. 5 it is a schematic diagram of a wireless communication method provided by an embodiment of the present application. This method is the second implementation method for solving the above problem 1.
  • the method includes the following steps:
  • Step 501 the second terminal device sends an auxiliary information request message (also referred to as a second request) to the first terminal device, where the auxiliary information request message is used to request to obtain auxiliary information.
  • an auxiliary information request message also referred to as a second request
  • Step 502 the first terminal device sends auxiliary information to the second terminal device based on the auxiliary information request message.
  • the second terminal device actively requests the first terminal device to obtain auxiliary information.
  • the second terminal device when the second terminal device is in mode 1, the transmission is performed based on the SL resources scheduled by the network device, so the second terminal device may only be in mode 2, or in mode 1+mode 2 (both in mode 1 and mode 2).
  • the SL transmission may be performed using the auxiliary information of the first terminal device. Therefore, as an implementation method, only when the mode information of the second terminal device is mode 2 or mode 1+mode 2, the second terminal device sends an auxiliary information request message to the first terminal device.
  • the second terminal device may send an auxiliary information request message to the first terminal device.
  • the second terminal device when the second terminal device satisfies the preset policy condition, the second terminal device sends an auxiliary information request message to the first terminal device.
  • the preset policy condition may be channel busy ratio (CBR), reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), received signal strength indicator (received)
  • the value of one or more parameters in signal strength indication, RSSI), signal to interference plus noise ratio (Signal to interference plus noise ratio, SINR), or power reaches a preset threshold or range.
  • the CBR of the second terminal device when the CBR of the second terminal device is within a preset CRB range, or is greater than or equal to a preset CBR threshold, the second terminal device sends an auxiliary information request message to the first terminal device.
  • the preset condition may further include that the second terminal device is in mode 2 or in mode 1+mode 2.
  • the preset policy condition may be configured to the second terminal device through an RRC message or RRC dedicated information, or may be configured to the second terminal device through a system message block (System Information Block, SIB), or may be pre-configured to the second terminal device.
  • SIB System Information Block
  • Two terminal devices, or the protocol is predefined.
  • the pre-configuration may be, for example, core network configuration or V2X application server configuration, such as configuration during initial network access.
  • the preconfigured preset policy conditions can be updated and modified, and the preset policy conditions preconfigured for different terminal devices may be different.
  • the preset policy conditions predefined by the protocol cannot be changed, and the preset policy conditions predefined by the protocol are the same in different terminal devices.
  • the first terminal device only sends the auxiliary information to the second terminal device when receiving the auxiliary information request message from the second terminal device, so as to avoid unnecessary information interaction and reduce resource waste.
  • the second terminal device obtains the auxiliary information in time, the transmission quality of the SL can be guaranteed.
  • FIG. 6 it is a schematic diagram of a wireless communication method provided by an embodiment of the present application. This method is the third implementation method for solving the above problem 1.
  • the method includes the following steps:
  • Step 601 The first terminal device determines that a preset policy condition is satisfied.
  • This step is optional.
  • the preset policy condition may be that the value of one or more parameters in CBR, RSRP, RSRQ, RSSI, SINR, power, etc. reaches a preset threshold or range.
  • a preset threshold or range e.g., a preset CRB range, or is greater than or equal to a preset CBR threshold.
  • the preset policy condition may be configured to the first terminal device through RRC dedicated information, or configured to the first terminal device through SIB, or preconfigured to the first terminal device, or predefined by a protocol.
  • Step 602 the first terminal device sends auxiliary information to the second terminal device.
  • the first terminal device sends auxiliary information to the second terminal device when it is determined that the preset policy condition is satisfied.
  • the first terminal device may also periodically send the auxiliary information before the second terminal device.
  • the first terminal device can actively send auxiliary information to the second terminal device based on its own judgment, which can reduce information interaction and reduce resource waste.
  • the second terminal device obtains the auxiliary information in time, the transmission quality of the SL can be guaranteed.
  • This embodiment is used to solve the above problem 2, that is: how the first terminal device sends auxiliary information to the second terminal device.
  • the first terminal device is in mode 1, and the first terminal device sends auxiliary information to the second terminal device based on the SCI.
  • the first terminal device may acquire the first sidelink transmission resource for sending auxiliary information. Then, the first terminal device sends first information to the second terminal device on the first sidelink transmission resource, where the first information carries auxiliary information, and the auxiliary information is used to indicate one or more sets of sidelink transmissions resource.
  • the first information may be, for example, PC5-RRC signaling, PC5-S message, SL MAC CE or SCI.
  • FIG. 7 it is a schematic diagram of a wireless communication method provided by an embodiment of the present application. This method is the first implementation method for the first terminal device to acquire the first sidelink transmission resource for sending auxiliary information.
  • the method includes the following steps:
  • Step 701 The first terminal device sends a dedicated scheduling request (dedicated SR) to the network device on the dedicated resource, where the dedicated SR is used to request allocation of sidelink transmission resources for sending the SCI.
  • a dedicated scheduling request (dedicated SR)
  • Step 702 the first terminal device receives the first sidelink transmission resource from the network device.
  • a dedicated configuration is preliminarily associated with the SCI for transmitting auxiliary information, and the first terminal device requests the network device to allocate sidelink transmission resources for transmitting auxiliary information based on the dedicated SR configuration.
  • the protocol is predefined or the network device configures the SR ID corresponding to the SCI.
  • the network device can know, based on the resource, the sidelink transmission resource requested by the first terminal device for transmitting auxiliary information, and then can be the first terminal device to transmit the auxiliary information.
  • the terminal equipment configures corresponding sidelink transmission resources.
  • the auxiliary information may indicate multiple sets of sidelink resources
  • the number of sidelink transmission resources indicated by the auxiliary information transmitted by the SCI each time may be different, so the request from the network device is used to send the auxiliary information.
  • the size of the sidelink transmission resources may be different. Therefore, it is necessary to clarify how to make the network device accurately configure the sidelink transmission resources of the corresponding size.
  • multiple SCI formats can be pre-defined, and one SCI format can transmit one or more sets of sidelink transmission resources correspondingly.
  • the size of the uplink transmission resources is different.
  • SCI format 1 corresponds to the transmission of 1 set of sidelink transmission resources
  • SCI format 2 corresponds to the transmission of 2 sets of sidelink transmission resources
  • the dedicated resources corresponding to SCI of different formats are different.
  • the dedicated SR configuration corresponding to SCI format 1 is: SR ID 1
  • resource 1 and the dedicated SR configuration corresponding to SCI format 2 is: SR ID 2, resource 2.
  • the first terminal device can determine the format of the corresponding SCI according to the size of the auxiliary information to be transmitted, and then determine the corresponding dedicated resource according to the format of the SCI, and then send the SR to the network device on the dedicated resource (for example, resource 1).
  • the network device may determine to allocate the sidelink transmission resource corresponding to the SCI format 1 to the first terminal device, so as to transmit the SCI.
  • the first terminal device can indicate the format corresponding to the second-level SCI (second stage SCI) through the indication information in the first-level SCI (first stage SCI), so that the second terminal device can learn according to the indication information.
  • the SCI is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the indication information in the first-level SCI indicates the size of the auxiliary information carried by the second-level SCI. That is to say, auxiliary information can be jointly indicated by two-level SCI, the first-level SCI indicates the second-level SCI, and the second-level SCI carries the auxiliary information.
  • the above-mentioned indication information of the first-level SCI is only an example, and the information that can indicate the association information of the auxiliary information carried by the second-level SCI can be carried in the indication information of the first-level SCI, and the association information can be carried. some or all of the information.
  • the associated information may be information associated with the size of the auxiliary information, information associated with resources indicated in the auxiliary information, and the like.
  • the SCI is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the auxiliary information may also be carried in the first-level SCI, which is not limited in the embodiment of the present application.
  • the first-level SCI can also carry associated information of auxiliary information.
  • an SCI format may be pre-defined, and the SCI format may correspond to multiple SCI sizes, and the sizes of sidelink transmission resources indicated by auxiliary information carried by SCIs of different sizes are different.
  • the first SCI size corresponds to the transmission of 1 set of sidelink transmission resources
  • the second SCI size corresponds to the transmission of 2 sets of sidelink transmission resources
  • the dedicated resources corresponding to SCIs of different sizes are different.
  • the dedicated SR configuration corresponding to the first SCI size is: SR ID 1, resource 1
  • the dedicated SR configuration corresponding to the second SCI size is: SR ID 2, resource 2.
  • the first terminal device can determine the size of the corresponding SCI according to the size of the auxiliary information to be transmitted, and then determine the corresponding dedicated resource according to the size of the SCI, and then send the SR to the network device on the dedicated resource (for example, resource 1).
  • the network device may determine to allocate a sidelink transmission resource corresponding to the first SCI size to the first terminal device, so as to transmit the SCI.
  • truncated SCI (truncated SCI) is introduced. It can be understood that when the size of the sidelink transmission resources requested through the dedicated SR is smaller than the size of the sidelink transmission resources required by the auxiliary information to be transmitted, as much auxiliary information as possible can be sent through the truncated SCI.
  • the format of a normal SCI is different from that of a truncated SCI.
  • a common SCI can transmit 100 megabytes of auxiliary information, but the first terminal device cannot transmit 100 megabytes of auxiliary information through the size of the sidelink transmission resources requested by the dedicated SR, then the first terminal device determines to use
  • the SCI is truncated to transmit a portion of the auxiliary information, eg, 50 megabytes of auxiliary information, so that the first terminal device generates a truncated SCI that carries 50 megabytes of auxiliary information.
  • the indication information in the first stage SCI can be used to indicate whether the second stage SCI corresponds to a normal SCI (normal SCI) or a truncated SCI (truncated SCI). Therefore, the second terminal device can learn, according to the indication information, whether the sidelink transmission resources indicated by the auxiliary information sent by the first terminal device are all of the sidelink transmission resources or part of the sidelink transmission resources.
  • the network device is requested to allocate sidelink transmission resources for sending the SCI through dedicated resources and dedicated scheduling requests.
  • a scheduling request may also be sent to the network device on a non-dedicated resource (such as a public resource), where the scheduling request is used to request allocation of sidelink transmission resources for sending the SCI, and then The first sidelink transmission resource is received from the network device.
  • the first terminal device can determine the non-dedicated resource according to the SCI format; wherein, the non-dedicated resources corresponding to the SCIs of different formats are different, and the sidelink transmission resources indicated by the auxiliary information carried by the SCIs of different formats are different. Different sizes.
  • the first terminal device may determine the non-dedicated resource according to the size of the SCI; wherein, the non-dedicated resources corresponding to SCIs of different sizes are different, and the sidelink transmission resources indicated by the auxiliary information carried by the SCIs of different sizes are of different sizes.
  • the first terminal device may send a scheduling request to the network device on resources (eg, dedicated resources or non-dedicated resources), the scheduling request being used to request allocation of sidelink transmission resources for sending the SCI. Then, the first terminal device receives the first sidelink transmission resource from the network device.
  • resources eg, dedicated resources or non-dedicated resources
  • FIG. 8 it is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • the method is a second implementation method for the first terminal device to acquire the first sidelink transmission resource for sending auxiliary information.
  • the method includes the following steps:
  • Step 801 the first terminal device sends a buffer status report (BSR) to the network device, the buffer status report is used to request the allocation of sidelink transmission resources for sending sidelink control information, and the buffer status report indicates that the The size of the auxiliary information to be transmitted.
  • BSR buffer status report
  • Step 802 The first terminal device receives the first sidelink transmission resource from the network device.
  • the first terminal device obtains sidelink transmission resources for sending auxiliary information based on the BSR report.
  • the BSR can also be called BL BSR.
  • the format of the SL BSR can refer to Figure 3.
  • the size of the Buffer size in the SLBSR can be the size of the auxiliary information to be transmitted.
  • the size of the buffer size is the size of the SCI to be transmitted that carries the auxiliary information.
  • the existing SL BSR format that is, the format shown in Figure 3
  • the target index in the SL BSR is a dedicated target index
  • the dedicated target index is used to request allocation for sending The sidelink transmission resources of the auxiliary information
  • the network device configures the corresponding sidelink transmission resources according to the size of the buffer size corresponding to the dedicated target index. That is, the dedicated target index corresponds to the size of the auxiliary information to be transmitted.
  • the existing SL BSR format that is, the format shown in Figure 3
  • the dedicated logical channel group identifier is used.
  • the SL BSR is used to request sidelink transmission resources corresponding to the auxiliary information for requesting allocation of sidelink transmission resources for sending auxiliary information.
  • the network device configures the corresponding side link transmission resources according to the size of the buffer size corresponding to the dedicated logical channel group identifier. That is, the dedicated logical channel group identification corresponds to the size of the auxiliary information to be transmitted.
  • a dedicated buffer status report can be used instead of using the existing SLBSR format.
  • the dedicated buffer status report corresponds to a dedicated BSR format, and the dedicated buffer status report is used to request auxiliary information.
  • Corresponding sidelink transmission resources It can be understood that the network device configures the corresponding side link transmission resources according to the size of the buffer size corresponding to the dedicated BSR format.
  • the dedicated buffer status report can be understood as a buffer status report only used to request the configuration of sidelink transmission resources.
  • the dedicated BSR format and the existing SL BSR format can be different MAC CEs.
  • an additional MAC CE can be designed to support a dedicated BSR format, and the additionally designed MAC CE is different from the MAC CE corresponding to the existing SL BSR format.
  • "Dedicated" can be embodied as: each MAC CE has its own LCID to identify itself.
  • the dedicated BSR format here is equivalent to a MAC CE corresponding to a dedicated LCID.
  • the auxiliary information and the corresponding sidelink transmission resources are determined by the MAC layer of the first terminal device, and instructed to the physical layer (PHY layer) for transmission.
  • the first terminal device can obtain sidelink transmission resources for sending auxiliary information to ensure that the auxiliary information can be sent normally, so that the second terminal device can better perform SL based on the auxiliary information after receiving the auxiliary information. Communication improves communication quality.
  • the network device is requested to allocate sidelink transmission resources for sending the SCI through the dedicated target index, the dedicated logical channel group identifier or the dedicated buffer status report.
  • a non-dedicated buffer status report (for example, a public buffer status report) may be used to request the network device to allocate sidelink transmission resources for sending the SCI
  • the non-dedicated buffer status report Can carry a non-dedicated target index (eg, a public target index), which can be used to request allocation of sidelink transmission resources for sending assistance information, or the non-dedicated buffer status report can carry a non-dedicated target index
  • a logical channel group identifier eg, a common logical channel group identifier
  • the non-dedicated logical channel group identifier can be used to request allocation of sidelink transmission resources for sending auxiliary information.
  • the first terminal device may send a buffer status report (eg, a dedicated buffer status report or a non-dedicated buffer status report) to the network device, the buffer status report being used to request allocation of a sidelink transmission for sending an SCI resource. Then, the first terminal device receives the first sidelink transmission resource from the network device.
  • a buffer status report eg, a dedicated buffer status report or a non-dedicated buffer status report
  • This embodiment is used to solve the above problem 3, how the second terminal device uses one or more sets of sidelink transmission resources indicated by the auxiliary information to perform data transmission.
  • the second terminal device when the second terminal device receives auxiliary information from the first terminal device, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources, the second terminal device
  • the auxiliary information is processed according to the mode information of the second terminal device, wherein the mode information of the second terminal device is used to indicate the resource scheduling mode of the second terminal device.
  • the mode information of the second terminal device includes mode 1, mode 2, or mode 1+mode 2.
  • the mode information of the second terminal device is used to indicate that the second terminal device is in mode 1, or in mode 1+mode 2.
  • the second terminal device can report the auxiliary information to the network device. , and then the network device may allocate the first sidelink transmission resource to the second terminal device based on the auxiliary information.
  • the second terminal device may report the auxiliary information to the network device based on a sidelink user information (Sidelink UE information, SUI) message, a user assistance information (UE Assistant information, UAI) message, and the like.
  • SAlink UE information SUI
  • UAI user assistance information
  • the second terminal device may also report the destination L2ID associated with the auxiliary information at the same time.
  • the destination L2ID here is the source L2ID of the first terminal device that sends the auxiliary information.
  • the mode information of the second terminal device is used to indicate that the second terminal device is in mode 1, or in mode 1+mode 2, and the second terminal device may discard or ignore the auxiliary information.
  • the second terminal device may judge at the MAC layer or the RRC layer whether to discard or ignore the auxiliary information.
  • the second terminal device only discards or ignores preferably unused sidelink transmission resources among one or more sets of sidelink transmission resources indicated by the auxiliary information.
  • the second terminal device feeds back indication information to the first terminal device, where the indication information is used to indicate that the second terminal device no longer needs the auxiliary information, thereby preventing the first terminal device from sending the auxiliary information to the first terminal device later.
  • the indication information may be carried on PC5-RRC signaling, SL MAC CE, or a physical layer side chain feedback channel (Physical Sidelink feedback Channel, PSFCH) channel.
  • Method 3 The mode information of the second terminal device is used to indicate that the second terminal device is in mode 2.
  • the second terminal device can allocate or determine the first terminal device based on the auxiliary information. Sidelink transmission resources.
  • the second terminal device after receiving the auxiliary information, can obtain more reasonable sidelink transmission resources based on the auxiliary information or select an appropriate destination for communication based on the sidelink transmission resources, which helps to improve resources Utilization, to ensure the quality of SL communication.
  • the sidelink transmission resources include preferably used sidelink transmission resources, and the first sidelink transmission resource determined by the second terminal device or the network device for transmitting the sidelink data of the second terminal device contains some or all of the preferably used sidelink transmission resources, that is, the first sidelink transmission resource corresponds to the preferably used sidelink transmission resource, then the first sidelink transmission resource
  • the resources are preferentially or only used by the second terminal device to transmit sidelink data to the first terminal device.
  • the auxiliary information sent by the first terminal device to the second terminal device indicates preferred sidelink transmission resources, and the preferred sidelink transmission resources include resource 1, resource 2, and resource 3.
  • the first sidelink transmission resource determined by the second terminal device or the network device and used for transmitting the sidelink data of the second terminal device includes resource 1, resource 4 and resource 5, then as a way, the resource 1, Resource 4 and resource 5 are preferentially used or only used by the second terminal device to send sidelink data to the first terminal device, or in another way, the resource 1 is preferentially used or only used by the second terminal device to send sidelink data to the first terminal device.
  • the first terminal device sends sidelink data
  • the resource 4 and resource 5 may be preferentially used or only used by the second terminal device to send sidelink data to the first terminal device, or may not be preferentially used or only used for the second terminal device to send sidelink data to the first terminal device.
  • the destination corresponding to the first terminal device is preferentially selected or only the destination corresponding to the first terminal device is selected.
  • the "preferred selection” here can be understood as: when there is a destination corresponding to the first terminal device, the destination corresponding to the first terminal device is preferentially selected, and when there is no destination corresponding to the first terminal device, the current There is a technical solution to select the destination corresponding to other terminal devices.
  • select only can be understood as: when there is a destination corresponding to the first terminal device, select the destination corresponding to the first terminal device, and when there is no destination corresponding to the first terminal device, do not select other terminal devices. destination, that is, no sidelink transmission resources are allocated for other terminal devices.
  • the above-mentioned preferably used sidelink transmission resources can also be understood as the preferred resource set (Support resource set which is preferred for UE's transmission) when the second terminal device transmits.
  • the sidelink transmission resources include preferably unused sidelink transmission resources, and the first sidelink transmission determined by the second terminal device or the network device for transmitting the sidelink data of the second terminal device.
  • the resources include part or all of the preferably unused sidelink transmission resources, that is, the first sidelink transmission resource corresponds to the preferably unused sidelink transmission resource, then the first sidelink transmission resource
  • the link transmission resources are not used for the second terminal device to send sidelink data to the first terminal device.
  • the auxiliary information sent by the first terminal device to the second terminal device indicates the sidelink transmission resources that are preferably not used, and the sidelink transmission resources that are preferably not used include resource 4 and resource 5, and the second
  • the first sidelink transmission resource determined by the terminal device or the network device and used for transmitting the sidelink data of the second terminal device includes resource 1, resource 4 and resource 5, then as a way, the resource 1, resource 4 and resource 5 are not used by the second terminal device to send sidelink data to the first terminal device, or alternatively, the resources 4 and 5 are not used by the second terminal device to send sidelink data to the first terminal device
  • the resource 1 may or may not be used for the second terminal device to send sidelink data to the first terminal device. Based on this implementation method, when the first sidelink transmission resource corresponds to a sidelink transmission resource that is not preferably used, when the destination is selected based on the SL LCP, the destination corresponding to the first terminal device is not selected.
  • preferably unused sidelink transmission resources can also be understood as a set of resources that are preferably not used when the second terminal device transmits (Support resource set which is preferred not to be used by UE's transmission).
  • the apparatus 900 includes a transceiver unit 910 and a processing unit 920 .
  • the communication device is a first terminal device or a chip for the first terminal device, then:
  • a processing unit 920 configured to acquire mode information of the second terminal device, where the mode information is used to indicate a resource scheduling mode of the second terminal device;
  • the processing unit 920 is configured to send auxiliary information to the second terminal device through the transceiver unit 910 according to the mode information, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the processing unit 920 configured to acquire the mode information of the second terminal device, specifically includes:
  • the transceiver unit 910 for receiving the mode information from the second terminal device through the transceiver unit 910 .
  • the transceiver unit 910 is further configured to send a first request to the second terminal device, where the first request is used to request to acquire the mode information.
  • the processing unit 920 is configured to send auxiliary information to the second terminal device through the transceiver unit 910 according to the mode information, specifically including:
  • the transceiver unit 910 is used to send the auxiliary information to the second terminal device through the transceiver unit 910 when it is determined that the mode information indicates that the second terminal device is in the network device scheduling mode and the autonomous competition mode; or,
  • the processing unit 920 is further configured to acquire a first sidelink transmission resource for sending the auxiliary information
  • the processing unit 920 is configured to send auxiliary information to the second terminal device through the transceiver unit 910 according to the mode information, specifically including:
  • the transceiver unit 910 is configured to send first information to the second terminal device on the first sidelink transmission resource through the transceiver unit 910 according to the mode information, where the first information carries the auxiliary information.
  • the processing unit 920 configured to acquire the first sidelink transmission resource for sending the auxiliary information, specifically includes:
  • the transceiver unit 910 is used for sending a dedicated scheduling request to a network device on dedicated resources through the transceiver unit 910, where the dedicated scheduling request is used to request allocation of sidelink transmission resources for sending the first information; through the transceiver unit 910 receives the first sidelink transmission resource from the network device.
  • the processing unit 920 is further configured to determine the dedicated resource according to the format of the first information; wherein, the dedicated resources corresponding to the first information in different formats are different, and the first information in different formats corresponds to different dedicated resources.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in one piece of information are different.
  • the processing unit 920 is further configured to determine the dedicated resource according to the size of the first information; wherein, the dedicated resources corresponding to the first information of different sizes are different, and the first information of different sizes corresponds to different dedicated resources.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in one piece of information are different.
  • the processing unit 920 is further configured to determine that the size of the first sidelink transmission resource is smaller than the size of the sidelink transmission resource required by the auxiliary information to be transmitted, then The truncated first information is generated, and the auxiliary information carried by the first information is less than the auxiliary information to be transmitted.
  • the processing unit 920 configured to acquire the first sidelink transmission resource for sending the auxiliary information, includes:
  • the buffer status report is used to request allocation of sidelink transmission resources for sending the first information, and the buffer status report indicates the size of the auxiliary information to be transmitted; the first sidelink transmission resource from the network device is received by the transceiver unit 910 .
  • the buffer status report carries a dedicated target index
  • the dedicated target index is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated target index is the same as the The size of the transmitted auxiliary information corresponds.
  • the buffer status report carries a dedicated logical channel group identifier
  • the dedicated logical channel group identifier is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated logical channel The group identifier corresponds to the size of the auxiliary information to be transmitted.
  • the buffer status report is a dedicated buffer status report.
  • the first information includes any of the following:
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the indication information in the first-level SCI indicates the second level SCI
  • the first information is a two-level SCI
  • the two-level SCI includes a first-level SCI and a second-level SCI
  • the auxiliary information is carried in the first-level SCI.
  • the processing unit 920 is further configured to determine that a preset policy condition is satisfied before sending the auxiliary information to the second terminal device through the transceiver unit 910 according to the mode information;
  • the preset policy conditions include: channel busy rate CBR of the first terminal device, reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indication RSSI, signal to interference plus noise ratio SINR, or one of power The value of one or more parameters reaches a preset threshold or range.
  • the communication device is a second terminal device or a chip for the second terminal device, then:
  • a transceiver unit 910 configured to receive auxiliary information from the first terminal device, where the auxiliary information is used to indicate one or more sets of sidelink transmission resources;
  • the processing unit 920 is configured to process the auxiliary information according to the mode information of the second terminal device, where the mode information is used to indicate the resource scheduling mode of the second terminal device.
  • the processing unit 920 configured to process the auxiliary information according to the mode information of the second terminal device, specifically includes:
  • the mode information is used to indicate that the second terminal device is in an autonomous competition mode, and is used to determine, according to the auxiliary information, a first sidelink transmission for transmitting sidelink data of the second terminal device resource.
  • the processing unit 920 configured to process the auxiliary information according to the mode information of the second terminal device, specifically includes:
  • the mode information is used to indicate that the second terminal device is in the autonomous competition mode and the network device scheduling mode, or is in the network device scheduling mode, and is used to send the auxiliary information to the network device through the transceiver unit 910, the auxiliary The information is used to generate a first sidelink transmission resource, and the first sidelink transmission resource is used to transmit sidelink data of the second terminal device.
  • one or more sets of sidelink transmission resources indicated by the auxiliary information include preferably used sidelink transmission resources, and the first sidelink transmission resources correspond to the The preferred sidelink transmission resource is used, and the first sidelink transmission resource is preferentially or only used for the second terminal device to send sidelink data to the first terminal device.
  • the first sidelink transmission resource is preferentially used or only used for the second terminal device to send sidelink data to the first terminal device, including:
  • the target terminal equipment selected based on the sidelink logical channel priority mechanism includes the first terminal equipment.
  • one or more sets of sidelink transmission resources indicated by the auxiliary information include sidelink transmission resources that are preferably not used, and the first sidelink transmission resources correspond to For the preferably unused sidelink transmission resources, the first sidelink transmission resources are not used for the second terminal device to send sidelink data to the first terminal device.
  • the first sidelink transmission resource is not used for the second terminal device to send sidelink data to the first terminal device, including:
  • the target terminal equipment selected based on the sidelink logical channel priority mechanism does not include the first terminal equipment.
  • the processing unit 920 configured to process the auxiliary information according to the mode information of the second terminal device, specifically includes:
  • the mode information is used to indicate that the second terminal device is in an autonomous contention mode and a network device scheduling mode, or is in a network device scheduling mode, and is used for discarding or ignoring the auxiliary information.
  • the transceiver unit 910 is further configured to send the mode information to the first terminal device.
  • the transceiver unit 910 is further configured to receive a first request from the first terminal device, where the first request is used to request to acquire the mode information.
  • the transceiver unit 910 is further configured to send a second request to the first terminal device, where the second request is used to request to obtain auxiliary information.
  • the processing unit 920 is further configured to determine that a preset policy condition is met;
  • the preset policy conditions include: the channel busy rate CBR of the second terminal device, the reference signal received power RSRP, the reference signal received quality RSRQ, the received signal strength indication RSSI, the signal to interference plus noise ratio SINR or the battery
  • the value of one or more parameters reaches a preset threshold or range.
  • the communication device is a first terminal device or a chip for the first terminal device, then:
  • the transceiver unit 910 is configured to send a dedicated scheduling request to the network device on the dedicated resource, where the dedicated scheduling request is used to request allocation of sidelink transmission resources used for sending sidelink control information; A sidelink transmission resource; on the first sidelink transmission resource, send sidelink control information to the second terminal device, where the sidelink control information carries auxiliary information, and the auxiliary information is used to indicate One or more sets of sidelink transmission resources.
  • the processing unit 920 is configured to determine the dedicated resource according to the format of the sidelink control information; wherein, the dedicated resources corresponding to the sidelink control information in different formats are different, and the dedicated resources in different formats are different.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in the sidelink control information are different.
  • the processing unit 920 is configured to determine the dedicated resource according to the size of the sidelink control information; wherein, the dedicated resources corresponding to the sidelink control information of different sizes are different, and the dedicated resources corresponding to the sidelink control information of different sizes are different.
  • the sizes of the sidelink transmission resources indicated by the auxiliary information carried in the sidelink control information are different.
  • the processing unit 920 is configured to determine that the size of the first sidelink transmission resource is smaller than the size of the sidelink transmission resource required by the auxiliary information to be transmitted, and then generates the truncated Sidelink control information, where the auxiliary information carried by the sidelink control information is less than the auxiliary information to be transmitted.
  • the transceiver unit 910 is further configured to receive mode information from the second terminal device, where the mode information is used to indicate that the second terminal device is in the autonomous competition mode, or is in the self-occupied competition mode and the network Device scheduling mode.
  • the transceiver unit 910 is further configured to send a first request to the second terminal device, where the first request is used to request to acquire the mode information.
  • the transceiver unit 910 is further configured to receive a second request from the second terminal device, where the second request is used to request to obtain auxiliary information.
  • the processing unit 920 is configured to determine that a preset policy condition is met; wherein the preset policy condition includes: one of CBR, RSRP, RSRQ, RSSI, SINR, or power of the first terminal device The value of one or more parameters reaches a preset threshold or range.
  • the communication device is a first terminal device or a chip for the first terminal device, then:
  • the transceiver unit 910 is configured to send a buffer status report to the network device, where the buffer status report is used to request allocation of sidelink transmission resources used for sending sidelink control information, and the buffer status report indicates to be transmitted the size of the auxiliary information; receive the first sidelink transmission resource from the network device; send the sidelink control information to the second terminal device on the first sidelink transmission resource, the sidelink
  • the path control information carries auxiliary information, and the auxiliary information is used to indicate one or more sets of sidelink transmission resources.
  • the buffer status report carries a dedicated target index
  • the dedicated target index is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated target index is associated with the auxiliary information to be transmitted. size corresponds to.
  • the buffer status report carries a dedicated logical channel group identifier
  • the dedicated logical channel group identifier is used to request allocation of sidelink transmission resources for sending auxiliary information
  • the dedicated logical channel group identifier is the same as The size of the auxiliary information to be transmitted corresponds to.
  • the buffer status report is a dedicated buffer status report.
  • the transceiver unit 910 is further configured to receive mode information from the second terminal device, where the mode information is used to indicate that the second terminal device is in the autonomous competition mode, or is in the self-occupied competition mode and the network Device scheduling mode.
  • the transceiver unit 910 is further configured to send a first request to the second terminal device, where the first request is used to request to acquire the mode information.
  • the transceiver unit 910 is further configured to receive a second request from the second terminal device, where the second request is used to request to obtain auxiliary information.
  • the processing unit 920 is configured to determine that a preset policy condition is met; wherein the preset policy condition includes: one of CBR, RSRP, RSRQ, RSSI, SINR, or power of the first terminal device The value of one or more parameters reaches a preset threshold or range.
  • the above-mentioned communication device 900 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement corresponding methods or Features.
  • the processing unit 920 may read data or instructions in the storage unit, so that the communication apparatus implements the methods in the above embodiments.
  • each unit in the above apparatus can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above method, such as: one or more Application Specific Integrated Circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or a combination of at least two of these integrated circuit forms.
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processors
  • FPGA Field Programmable Gate Array
  • FPGA Field Programmable Gate Array
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can invoke programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above transceiver unit 910 is an interface circuit of the device, and is used to receive signals from or send signals to other devices.
  • the transceiver unit 910 is an interface circuit used by the chip to receive signals from other chips or devices, or an interface circuit to send signals to other chips or devices.
  • the communication apparatus includes: a processor 1010 and an interface 1030 , and optionally, the communication apparatus further includes a memory 1020 .
  • the interface 1030 is used to implement communication with other devices.
  • the method executed by the first terminal device or the second terminal device in the above embodiment may call the program stored in the memory (which may be the memory 1020 in the first terminal device or the second terminal device, or an external memory) through the processor 1010 to fulfill. That is, the first terminal device or the second terminal device may include a processor 1010, and the processor 1010 executes the method performed by the first terminal device or the second terminal device in the above method embodiments by calling a program in the memory.
  • the processor here may be an integrated circuit with signal processing capability, such as a CPU.
  • the first terminal device or the second terminal device may be implemented by one or more integrated circuits configured to implement the above method. For example: one or more ASICs, or, one or more microprocessor DSPs, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementations may be combined.
  • the functions/implementation process of the transceiver unit 910 and the processing unit 920 in FIG. 9 may be implemented by the processor 1010 in the communication apparatus 1000 shown in FIG. 10 calling computer executable instructions stored in the memory 1020 .
  • the function/implementation process of the processing unit 920 in FIG. 9 can be implemented by the processor 1010 in the communication apparatus 1000 shown in FIG. 10 calling the computer-executed instructions stored in the memory 1020, and the function of the transceiver unit 910 in FIG. 9
  • the implementation process can be implemented through the interface 1030 in the communication device 1000 shown in FIG. 10 .
  • At least one item (single, species) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.
  • “Plurality" means two or more, and other quantifiers are similar.
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, implements the functions of any of the foregoing method embodiments.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when the computer program product is executed by a computer.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • a general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.
  • the steps of the method or algorithm described in the embodiments of the present application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • Software units can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or this.
  • RAM Random Access Memory
  • ROM read-only memory
  • EPROM memory read-only memory
  • EEPROM memory electrically erasable programmable read-only memory
  • registers hard disk, removable disk, CD-ROM or this.
  • a storage medium may be coupled to the processor such that the processor may read information from, and store information in, the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and storage medium may be provided in the ASIC.
  • the above-described functions described herein may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on, or transmitted over, a computer-readable medium in the form of one or more instructions or code.
  • Computer-readable media includes computer storage media and communication media that facilitate the transfer of a computer program from one place to another. Storage media can be any available media that a general-purpose or special-purpose computer can access.
  • Such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other media in the form of program code that can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly defined as a computer-readable medium, for example, if software is transmitted from a website site, server or other remote source over a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless, and microwave are also included in the definition of computer-readable media.
  • DSL digital subscriber line
  • the discs and magnetic discs include compact discs, laser discs, optical discs, digital versatile discs (English: Digital Versatile Disc, DVD for short), floppy discs and Blu-ray discs. Disks usually reproduce data magnetically, while Discs usually use lasers to optically reproduce data. Combinations of the above can also be included in computer readable media.
  • the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请实施例提供无线通信方法、装置及系统。该方法包括：获取第二终端设备的模式信息，该模式信息用于指示第二终端设备的资源调度方式；根据该模式信息，向该第二终端设备发送辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。基于该方案，由第一终端设备基于第二终端设备的模式信息，向第二终端提供用于指示一套或多套侧行链路传输资源的辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，因而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。

Description

无线通信方法、装置及系统 技术领域
本申请实施例涉及通信技术领域，尤其涉及无线通信方法、装置及系统。
背景技术
在无线通信系统中，终端设备与终端设备之间可以通过网络设备进行数据通信，也可以不借助网络设备，直接进行终端设备与终端设备之间的通信。终端设备与终端设备之间的接口称为PC5接口，类似于终端设备与网络设备之间的Uu接口。终端设备与终端设备之间的链路称为侧行链路(sidelink，SL)。
侧行链路通信的一个典型应用场景为车联网(Vehicle to Everything，V2X)。在车联网中，车辆或者路侧单元(Road Side Unit，RSU)即一个终端设备，终端设备与终端设备之间可以通过侧行链路直接进行数据传输，而不需要经过网络设备，这样可以有效地减少通信时延。如图1所示，图1为终端设备与终端设备之间通过PC5接口直接通信示意图。
在终端设备与终端设备之间进行通信之前，需要为发送侧的终端设备分配侧行链路传输资源，从而发送侧的终端设备可以在分配的侧行链路传输资源上向接收侧的终端设备发送侧行链路数据。
如何进行侧行链路传输资源的合理有效分配，提高侧行链路通信的效率，是目前需要解决的问题。
发明内容
本申请实施例提供无线通信方法、装置及系统，用以实现对侧行链路传输资源的合理有效分配，从而提升侧行链路通信的效率。
示例性的，本申请实施例中，某一信息，如信息A，用于指示另一信息或特征，如信息B，可以包括如下任一情况：
信息A中包括信息B；
指示该信息B的索引或者标识信息，比如，信息A从一个或多个候选信息B中指示信息B，该一个或多个候选信息B中的每个候选信息B对应唯一的索引，用于标识该候选信息B；或者，
信息A用于确定信息B，例如，对信息A经过数学运算或滤波等可以得到信息B。
需要说明的是，本申请以下实施中的“专用的”或“专用”可以理解为指定的、网络配置的或协议预定义的。“专用”也可以表述为“特定”、“指定”等。比如，本申请实施例中的“专用调度请求”也可以表述为“特定调度请求”、“指定调度请求”等，其含义为：该调度请求仅限于某种特定的用途，不能用于其它用途。再比如，本申请实施例中的“专用资源”也可以表述为“特定资源”、“指定资源”等，其含义为：该资源仅限于某种特定的用途，不能用于其它用途。具体可以参见以下实施例中的具体描述。再比如，本申请实施例中的“专用缓冲区状态报告”也可以表述为“特定缓冲区状态报告”、“指定缓冲区状 态报告”等，其含义为：该资源仅限于某种特定的用途，不能用于其它用途。具体可以参见以下实施例中的具体描述。
需要说明的是，在实际使用中，“专用调度请求”也可以直接简化表述为“调度请求”，“专用资源”也可以直接简化表述为“资源”，“专用缓冲区状态报告”也可以直接简化表述为“缓冲区状态报告”。
第一方面，本申请实施例提供一种无线通信方法，该方法可由第一终端设备或芯片执行，该方法包括以下步骤：获取第二终端设备的模式信息，该模式信息用于指示该第二终端设备的资源调度方式；根据该模式信息，向该第二终端设备发送辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
基于上述方案，由第一终端设备基于第二终端设备的模式信息，向第二终端提供用于指示一套或多套侧行链路传输资源的辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，因而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
作为一种可能的实现方法，该获取第二终端设备的模式信息包括：接收来自该第二终端设备的该模式信息。
基于该实现方法，第一终端设备可以直接从第二终端设备获取第二终端设备的模式信息，如此可实现准确获取第二终端设备的模式信息。
作为另一种可能的实现方法，该获取第二终端设备的模式信息包括：接收来自网络设备的第二终端的模式信息。
基于该实现方法，第一终端设备不需要从第二终端设备获取第二终端设备的模式信息，而是从网络设备获取第二终端设备的模式信息，从而可以减少终端设备之间的交互，可以降低第二终端设备的能耗以及减少侧行链路上的信令开销。
作为另一种可能的实现方法，该获取第二终端设备的模式信息包括：从第一终端设备获取该第二终端设备的该模式信息，其中，第一终端设备中的该模式信息是预配置的。
基于该实现方法，将第二终端设备的模式信息预配置在第一终端设备，如此第一终端设备不需要从外部设备获取第二终端设备模式信息，减少了第一终端设备与外部设备之间的交互，从而降低第一终端设备的能耗。
作为一种可能的实现方法，向该第二终端设备发送第一请求，该第一请求用于请求获取该模式信息。
基于该实现方法，当第一终端设备需要获取第二终端设备的模式信息时，向第二终端设备发送第一请求，从而使得第二终端设备基于第一请求向第一终端设备发送第二终端设备的模式信息，从而避免当第一终端设备不需要第二终端设备的模式信息时，第二终端设备仍向第一终端设备发送第二终端设备的模式信息，从而可以减少不必要的开销。
作为一种可能的实现方法，该根据该模式信息，向该第二终端设备发送辅助信息，包括：确定该模式信息指示该第二终端设备处于网络设备调度模式和自主竞争模式，向该第二终端设备发送该辅助信息；或者，确定该模式信息指示该第二终端设备处于自主竞争模式，向该第二终端设备发送该辅助信息。
基于上述方案，在确定第二终端设备处于网络设备调度模式和自主竞争模式，或处于 自主竞争模式，才向第二终端设备发送辅助信息，可以避免第二终端设备不需要辅助信息时还向第二终端设备发送辅助信息，从而可以减少不必要的信息交互，减少能耗。
作为一种可能的实现方法，获取用于发送该辅助信息的第一侧行链路传输资源；根据该模式信息，向该第二终端设备发送辅助信息，包括：根据该模式信息，在该第一侧行链路传输资源上向该第二终端设备发送第一信息，该第一信息携带该辅助信息。
作为一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：在专用资源上向网络设备发送专用调度请求，该专用调度请求用于请求分配用于发送该第一信息的侧行链路传输资源；接收来自该网络设备的该第一侧行链路传输资源。
作为一种可能的实现方法，根据该第一信息的格式，确定该专用资源；其中，不同格式的第一信息对应的专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，根据该第一信息的大小，确定该专用资源；其中，不同大小的第一信息对应的专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，确定该第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的该第一信息，该第一信息携带的该辅助信息少于该待传输的辅助信息。
作为一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：向网络设备发送缓冲区状态报告，该缓冲区状态报告用于请求分配用于发送该第一信息的侧行链路传输资源，该缓冲区状态报告指示了待传输的辅助信息的大小；接收来自该网络设备的该第一侧行链路传输资源。
作为另一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：在非专用资源(比如可以是公共资源)上向网络设备发送调度请求，该调度请求用于请求分配用于发送该第一信息的侧行链路传输资源；接收来自该网络设备的该第一侧行链路传输资源。
作为一种可能的实现方法，根据该第一信息的格式，确定该非专用资源；其中，不同格式的第一信息对应的非专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，根据该第一信息的大小，确定该非专用资源；其中，不同大小的第一信息对应的非专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，该缓冲区状态报告携带专用目标索引，该专用目标索引用 于请求分配用于发送辅助信息的侧行链路传输资源，该专用目标索引与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告携带专用逻辑信道组标识，该专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，该专用逻辑信道组标识与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告是专用缓冲区状态报告。
作为一种可能的实现方法，该缓冲区状态报告携带的目标索引也可以是非专用目标索引，例如是公共目标索引，该公共目标索引可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告携带的逻辑信道组标识也可以是非专用逻辑信道组标识，例如是公共逻辑信道组标识，该公共逻辑信道组标识可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告是非专用缓冲区状态报告。例如是公共缓冲区状态报告。
作为一种可能的实现方法，该第一信息包括以下任一种：SCI、PC5-RRC信令、SL MAC CE。
作为一种可能的实现方法，该第一信息是两级SCI，该两级SCI包含第一级SCI和第二级SCI，该第一级SCI中的指示信息指示了该第二级SCI携带的该辅助信息的大小。比如，该指示信息具体可以指示第二级SCI的格式、或指示第二级SCI的大小、或指示该第二级SCI是普通SCI或截断SCI。
作为一种可能的实现方法，该第一信息是两级SCI，该两级SCI包含第一级SCI和第二级SCI，辅助信息携带在第一级SCI中。
作为一种可能的实现方法，根据该模式信息，向该第二终端设备发送辅助信息之前，还包括：确定满足预设策略条件；其中，该预设策略条件包括：该第一终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
第二方面，本申请实施例提供一种无线通信方法，该方法可由第二终端设备或芯片执行，该方法包括以下步骤：接收来自第一终端设备的辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源；根据该第二终端设备的模式信息，处理该辅助信息，该模式信息用于指示该第二终端设备的资源调度方式。
基于上述方案，由第一终端设备基于第二终端设备的模式信息，向第二终端提供用于指示一套或多套侧行链路传输资源的辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来确定或分配用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，从而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
作为一种可能的实现方法，该根据该第二终端设备的模式信息，处理该辅助信息，包括：该模式信息用于指示该第二终端设备处于自主竞争模式，根据该辅助信息，确定用于传输该第二终端设备的侧行链路数据的第一侧行链路传输资源。
作为一种可能的实现方法，该根据该第二终端设备的模式信息，处理该辅助信息，包括：该模式信息用于指示该第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，向网络设备发送该辅助信息，该辅助信息用于第一侧行链路传输资源 的生成，该第一侧行链路传输资源用于传输该第二终端设备的侧行链路数据。
作为一种可能的实现方法，该辅助信息指示的一套或多套侧行链路传输资源中包括优选使用的侧行链路传输资源，该第一侧行链路传输资源对应于该优选使用的侧行链路传输资源，该第一侧行链路传输资源优先用于或仅用于该第二终端设备向该第一终端设备发送侧行链路数据。
基于该方案，由于是基于第一终端设备提供的优选使用的侧行链路资源，来确定用于第二终端设备向第一终端设备发送侧行链路数据的侧行链路资源，因而可以实现快速确定出能够使用的用于向第一终端设备发送侧行链路数据的侧行链路资源，并且可以减少资源冲突或者资源浪费情况的发生。
作为一种可能的实现方法，该第一侧行链路传输资源优先用于或仅用于该第二终端设备向该第一终端设备发送侧行链路数据，包括：基于侧行链路逻辑信道优先级机制选择的目标终端设备包括该第一终端设备。
作为一种可能的实现方法，该辅助信息指示的一套或多套侧行链路传输资源中包括优选不使用的侧行链路传输资源，该第一侧行链路传输资源对应于该优选不使用的侧行链路传输资源，该第一侧行链路传输资源不用于该第二终端设备向该第一终端设备发送侧行链路数据。
基于该方案，由于是基于第一终端设备提供的优选不使用的侧行链路资源，来确定用于发送侧行链路数据的侧行链路资源，因而可以避免选择该优选不使用的侧行链路资源向第一终端设备发送侧行链路数据，从而可以减少资源冲突或者资源浪费情况的发生。
作为一种可能的实现方法，该第一侧行链路传输资源不用于该第二终端设备向该第一终端设备发送侧行链路数据，包括：基于侧行链路逻辑信道优先级机制选择的目标终端设备不包括该第一终端设备。
作为一种可能的实现方法，该根据该第二终端设备的模式信息，处理该辅助信息，包括：该模式信息用于指示该第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，丢弃或忽视该辅助信息。
作为一种可能的实现方法，向该第一终端设备发送该模式信息。
基于该实现方法，第一终端设备可以直接从第二终端设备获取第二终端设备的模式信息，如此可实现准确获取第二终端设备的模式信息。
作为一种可能的实现方法，接收来自该第一终端设备的第一请求，该第一请求用于请求获取该模式信息。
基于该实现方法，当第一终端设备需要获取第二终端设备的模式信息时，向第二终端设备发送第一请求，从而使得第二终端设备基于第一请求向第一终端设备发送第二终端设备的模式信息，从而避免当第一终端设备不需要第二终端设备的模式信息时，第二终端设备向第一终端设备发送第二终端设备的模式信息，从而可以减少不必要的开销。
作为一种可能的实现方法，向该第一终端设备发送第二请求，该第二请求用于请求获取辅助信息。
基于该实现方法，当第二终端设备需要获取辅助信息时，向第一终端设备发送第二请求，从而使得第一终端设备基于第二请求向第二终端设备发送辅助信息，从而避免当第二终端设备不需要辅助信息时，第一终端设备仍向第二终端设备发送辅助信息，从而可以减少不必要的信息开销。
作为一种可能的实现方法，确定满足预设策略条件；其中，该预设策略条件包括：该第二终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
第三方面，本申请实施例提供一种无线通信方法，该方法可由第一终端设备或芯片执行，该方法包括以下步骤：在专用资源上向网络设备发送专用调度请求，该专用调度请求用于请求分配用于发送侧行链路控制信息的侧行链路传输资源；接收来自该网络设备的第一侧行链路传输资源；在该第一侧行链路传输资源上，向第二终端设备发送侧行链路控制信息，该侧行链路控制信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
基于上述方案，可以实现在不传输侧行链路数据的情况下，请求分配用于传输侧行链路控制信息的侧行链路资源，该侧行链路控制信息携带用于指示一套或多套侧行链路传输资源，也即实现了通过侧行链路控制信息向第二终端设备发送辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，从而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
作为一种可能的实现方法，根据该侧行链路控制信息的格式，确定该专用资源；其中，不同格式的侧行链路控制信息对应的专用资源不同，不同格式的侧行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，根据该侧行链路控制信息的大小，确定该专用资源；其中，不同大小的侧行链路控制信息对应的专用资源不同，不同大小的侧行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，确定该第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的该侧行链路控制信息，该侧行链路控制信息携带的该辅助信息少于该待传输的辅助信息。
作为一种实现方法，也可以是在非专用资源(如公共资源)上向网络设备发送调度请求，该调度请求用于请求分配用于发送侧行链路控制信息的侧行链路传输资源；接收来自该网络设备的第一侧行链路传输资源；在该第一侧行链路传输资源上，向第二终端设备发送侧行链路控制信息，该侧行链路控制信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
作为一种可能的实现方法，根据该侧行链路控制信息的格式，确定该非专用资源；其中，不同格式的侧行链路控制信息对应的非专用资源不同，不同格式的侧行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，根据该侧行链路控制信息的大小，确定该非专用资源；其中，不同大小的侧行链路控制信息对应的非专用资源不同，不同大小的侧行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
第四方面，本申请实施例提供一种无线通信方法，该方法可由第一终端设备或芯片执行，该方法包括以下步骤：向网络设备发送缓冲区状态报告，该缓冲区状态报告用于请求分配用于发送侧行链路控制信息的侧行链路传输资源，该缓冲区状态报告指示了待传输的辅助信息的大小；接收来自该网络设备的第一侧行链路传输资源；在该第一侧行链路传输资源上，向第二终端设备发送侧行链路控制信息，该侧行链路控制信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
基于上述方案，可以实现通过缓冲区状态报告，请求分配用于传输侧行链路控制信息的侧行链路资源，该侧行链路控制信息携带用于指示一套或多套侧行链路传输资源，也即实现了通过侧行链路控制信息向第二终端设备发送辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，从而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
作为一种可能的实现方法，该缓冲区状态报告携带专用目标索引，该专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，该专用目标索引与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告携带的目标索引也可以是非专用目标索引，例如是公共目标索引，该公共目标索引可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告携带的逻辑信道组标识也可以是非专用逻辑信道组标识，例如是公共逻辑信道组标识，该公共逻辑信道组标识可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告是非专用缓冲区状态报告。例如是公共缓冲区状态报告。
作为一种可能的实现方法，该缓冲区状态报告携带专用逻辑信道组标识，该专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，该专用逻辑信道组标识与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告是专用缓冲区状态报告。
基于上述第三方面、或第四方面：
作为一种可能的实现方法，接收来自该第二终端设备的模式信息，该模式信息用于指示该第二终端设备处于自主竞争模式，或处于自住竞争模式和网络设备调度模式。
作为一种可能的实现方法，向该第二终端设备发送第一请求，该第一请求用于请求获取该模式信息。
作为一种可能的实现方法，接收来自该第二终端设备的第二请求，该第二请求用于请求获取辅助信息。
作为一种可能的实现方法，确定满足预设策略条件；其中，该预设策略条件包括：该第一终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
第五方面，本申请实施例提供一种无线通信方法，该方法可由第一终端设备或芯片执行，该方法包括以下步骤：获取第二终端设备的模式信息，该模式信息用于指示该第二终 端设备的资源调度方式；根据该模式信息，判断是否向该第二终端设备发送辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
基于上述方案，由第一终端设备基于第二终端设备的模式信息，判断是否向第二终端设备发送辅助信息。如此可以在需要向第二终端设备发送辅助信息时才发送辅助信息，可以减少不必要的信令开销。当向第二终端发送了用于指示一套或多套侧行链路传输资源的辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，因而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
作为一种可能的实现方法，根据该模式信息，判断是否向该第二终端设备发送辅助信息，包括：确定该模式信息指示该第二终端设备处于网络设备调度模式和自主竞争模式，则确定向该第二终端设备发送该辅助信息；或者，确定该模式信息指示该第二终端设备处于自主竞争模式，则确定向该第二终端设备发送该辅助信息；或者，确定该模式信息指示该第二终端设备处于网络设备调度模式，则确定不向该第二终端设备发送该辅助信息。
基于上述方案，在确定第二终端设备处于网络设备调度模式和自主竞争模式，或处于自主竞争模式，才向第二终端设备发送辅助信息，可以避免第二终端设备不需要辅助信息时还向第二终端设备发送辅助信息，从而可以减少不必要的信息交互，减少能耗。
作为一种可能的实现方法，该获取第二终端设备的模式信息包括：接收来自该第二终端设备的该模式信息。
基于该实现方法，第一终端设备可以直接从第二终端设备获取第二终端设备的模式信息，如此可实现准确获取第二终端设备的模式信息。
作为另一种可能的实现方法，该获取第二终端设备的模式信息包括：接收来自网络设备的第二终端的模式信息。
基于该实现方法，第一终端设备不需要从第二终端设备获取第二终端设备的模式信息，而是从网络设备获取第二终端设备的模式信息，从而可以减少终端设备之间的交互，可以降低第二终端设备的能耗以及减少侧行链路上的信令开销。
作为另一种可能的实现方法，该获取第二终端设备的模式信息包括：从第一终端设备获取该第二终端设备的该模式信息，其中，第一终端设备中的该模式信息是预配置的。
基于该实现方法，将第二终端设备的模式信息预配置在第一终端设备，如此第一终端设备不需要从外部设备获取第二终端设备模式信息，减少了第一终端设备与外部设备之间的交互，从而降低第一终端设备的能耗。
作为一种可能的实现方法，向该第二终端设备发送第一请求，该第一请求用于请求获取该模式信息。
基于该实现方法，当第一终端设备需要获取第二终端设备的模式信息时，向第二终端设备发送第一请求，从而使得第二终端设备基于第一请求向第一终端设备发送第二终端设备的模式信息，从而避免当第一终端设备不需要第二终端设备的模式信息时，第二终端设备仍向第一终端设备发送第二终端设备的模式信息，从而可以减少不必要的开销。
作为一种可能的实现方法，获取用于发送该辅助信息的第一侧行链路传输资源；确定该模式信息指示该第二终端设备处于网络设备调度模式和自主竞争模式，则确定向该第二终端设备发送该辅助信息，包括：确定该模式信息指示该第二终端设备处于网络设备调度 模式和自主竞争模式，则确定在该第一侧行链路传输资源上向该第二终端设备发送该辅助信息。
作为一种可能的实现方法，获取用于发送该辅助信息的第一侧行链路传输资源；确定该模式信息指示该第二终端设备处于自主竞争模式，则确定向该第二终端设备发送该辅助信息，包括：确定该模式信息指示该第二终端设备处于自主竞争模式，则确定在该第一侧行链路传输资源上向该第二终端设备发送该辅助信息。
作为一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：在专用资源上向网络设备发送专用调度请求，该专用调度请求用于请求分配用于发送该第一信息的侧行链路传输资源；接收来自该网络设备的该第一侧行链路传输资源。
作为一种可能的实现方法，根据该第一信息的格式，确定该专用资源；其中，不同格式的第一信息对应的专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，根据该第一信息的大小，确定该专用资源；其中，不同大小的第一信息对应的专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，确定该第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的该第一信息，该第一信息携带的该辅助信息少于该待传输的辅助信息。
作为一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：向网络设备发送缓冲区状态报告，该缓冲区状态报告用于请求分配用于发送该第一信息的侧行链路传输资源，该缓冲区状态报告指示了待传输的辅助信息的大小；接收来自该网络设备的该第一侧行链路传输资源。
作为另一种可能的实现方法，该获取用于发送该辅助信息的第一侧行链路传输资源，包括：在非专用资源(比如可以是公共资源)上向网络设备发送调度请求，该调度请求用于请求分配用于发送该第一信息的侧行链路传输资源；接收来自该网络设备的该第一侧行链路传输资源。
作为一种可能的实现方法，根据该第一信息的格式，确定该非专用资源；其中，不同格式的第一信息对应的非专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，根据该第一信息的大小，确定该非专用资源；其中，不同大小的第一信息对应的非专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
基于上述方案，可以实现传输不同大小的侧行链路传输资源，实现侧行链路传输资源的大小的多样化。
作为一种可能的实现方法，该缓冲区状态报告携带专用目标索引，该专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，该专用目标索引与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告携带专用逻辑信道组标识，该专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，该专用逻辑信道组标识与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告是专用缓冲区状态报告。
作为一种可能的实现方法，该缓冲区状态报告携带的目标索引也可以是非专用目标索引，例如是公共目标索引，该公共目标索引可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告携带的逻辑信道组标识也可以是非专用逻辑信道组标识，例如是公共逻辑信道组标识，该公共逻辑信道组标识可以用于请求分配用于发送辅助信息的侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告是非专用缓冲区状态报告。例如是公共缓冲区状态报告。
作为一种可能的实现方法，该第一信息包括以下任一种：SCI、PC5-RRC信令、SL MAC CE。
作为一种可能的实现方法，该第一信息是两级SCI，该两级SCI包含第一级SCI和第二级SCI，该第一级SCI中的指示信息指示了该第二级SCI携带的该辅助信息的大小。比如，该指示信息具体可以指示第二级SCI的格式、或指示第二级SCI的大小、或指示该第二级SCI是普通SCI或截断SCI。
作为一种可能的实现方法，该第一信息是两级SCI，该两级SCI包含第一级SCI和第二级SCI，辅助信息携带在第一级SCI中。
作为一种可能的实现方法，向该第二终端设备发送辅助信息之前，还包括：确定满足预设策略条件；其中，该预设策略条件包括：该第一终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
第六方面，本申请实施例提供一种通信装置，该装置可以是第一终端设备，还可以是用于第一终端设备的芯片。该装置具有实现上述第一方面、第三方面、第四方面或第五方面的各实现方法的功能。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。
第七方面，本申请实施例提供一种通信装置，该装置可以是第二终端设备，还可以是用于第二终端设备的芯片。该装置具有实现上述第二方面的各实现方法的功能。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，本申请实施例提供一种通信装置，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，以使该装置执行如上述第一方面至第五方面的各实现方法。
第九方面，本申请实施例提供一种通信装置，包括用于执行上述第一方面至第五方面的各实现方法的各个步骤的单元或手段(means)。
第十方面，本申请实施例提供一种通信装置，包括处理器和接口电路，所述处理器用 于通过接口电路与其它装置通信，并执行上述第一方面至第五方面的各实现方法。该处理器包括一个或多个。
第十一方面，本申请实施例提供一种通信装置，包括处理器，用于与存储器相连，用于调用所述存储器中存储的程序，以执行上述第一方面至第五方面的各实现方法。该存储器可以位于该装置之内，也可以位于该装置之外。且该处理器包括一个或多个。
第十二方面，本申请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中存储有指令，当其在计算机上运行时，使得上述第一方面至第五方面的各实现方法被执行。
第十三方面，本申请实施例还提供一种计算机程序产品，该计算机产品包括计算机程序，当计算机程序运行时，使得上述第一方面至第五方面的各实现方法被执行。
第十四方面，本申请实施例还提供一种芯片系统，包括：处理器，用于执行上述第一方面至第四方面的各实现方法。
第十五方面，本申请实施例还提供一种通信系统，包括用于执行上述第一方面的任意实现方法的第一终端设备，和/或用于执行上述第二方面的任意实现方法的第二终端设备。
第十六方面，本申请实施例还提供一种通信系统，包括用于执行上述第三方面的任意实现方法的第一终端设备，和/或用于执行上述第二方面的任意实现方法的第二终端设备。
第十七方面，本申请实施例还提供一种通信系统，包括用于执行上述第四方面的任意实现方法的第一终端设备，和/或用于执行上述第二方面的任意实现方法的第二终端设备。
第十八方面，本申请实施例还提供一种通信系统，包括用于执行上述第五方面的任意实现方法的第一终端设备，和/或用于执行上述第二方面的任意实现方法的第二终端设备。
附图说明
图1为终端设备与终端设备之间通过PC5接口直接通信示意图；
图2为本申请实施例适用的SL通信场景；
图3为SL BSR的格式示意图；
图4为本申请实施例提供的无线通信方法示意图；
图5为本申请实施例提供的无线通信方法示意图；
图6为本申请实施例提供的无线通信方法示意图；
图7为本申请实施例提供的无线通信方法示意图；
图8为本申请实施例提供的无线通信方法示意图；
图9为本申请实施例提供的通信装置示意图；
图10为本申请实施例提供的通信装置示意图。
具体实施方式
本申请实施例中，终端设备是一种具有无线通信收发功能的设备或者是具有无线通信收发功能的设备中的装置或芯片系统，本申请实施例中的终端设备支持sidelink通信，可以部署在陆地上，包括室内或室外、道路侧，手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、 增强现实(augmented reality，AR)终端、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、用户设备(user equipment，UE)，车载通信装置、车载通信芯片、路侧单元或路侧单元中的通信装置等。
网络设备，是一种为终端设备提供无线通信服务的设备，通常位于网络侧，示例性的，该网络设备包括但不限于：第五代(5th generation，5G)中的下一代基站(g nodeB，gNB)、演进型节点B(evolved node B，eNB)、基带单元(baseBand unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心、V2X通信系统中的为终端设备提供无线通信服务的装置等。
如图2所示，为本申请实施例适用的SL通信场景。SL上支持单播、组播或广播通信。第一终端设备和第二终端设备可以位于一个同一个网络设备的覆盖范围内，也可以位于不同网络设备的覆盖范围内。或者一个终端设备位于网络设备的覆盖范围内，另一个终端设备处于网络设备的覆盖范围以外(out-of-coverage)。或者两个终端设备都处于网络设备的覆盖范围以外。本申请实施例可应用于长期演进(long term evolution，LTE)系统、新无线(New radio，NR)系统或下一代无线局域网系统等。
SL的传输需要终端设备提前获取资源才能发送数据，示例性的，SL上获取资源的方式有以下几种：
a)模式1(mode 1)：也可以称为网络设备调度模式。与Uu口类似，终端设备在发送SL数据前，先向网络设备上报SL缓冲区状态报告(Buffer Status Report，BSR)，告诉网络设备有多少侧行链路数据要发，然后网络设备通过SL grant为终端设备分配对应大小的侧行链路传输资源，以用于传输侧行链路数据。或者针对周期性业务，终端设备上报周期性业务的属性(包括起始时间、周期、包大小等)，然后网络设备为该终端设备配置周期性的侧行链路传输资源，后续该终端设备就不需要通过频繁上报BSR来获取侧行链路传输资源了。
b)模式2(mode 2)：也可以称为自主竞争模式。例如通过测量预先配置的SL资源池中的每个时频资源是否被占用，来选择空的未被占用的资源进行传输，此时不依赖于网络设备的调度。
c)模式1和模式2：也可以称为模式1+模式2，或者称为网络设备调度模式和自主竞争模式。终端设备处于网络设备调度模式和自主竞争模式可以理解为终端设备同时支持模式1和模式2，也就是说，终端设备可以采用网络设备调度模式或者自主竞争模式获取资源。
示例性的，下面介绍SL BSR。
根据前面介绍的模式1，终端设备在发送SL数据前，先向网络设备上报SL BSR，通知网络设备有多少侧行链路数据要发，然后网络设备通过SL grant为终端设备分配对应大小的侧行链路传输资源，以用于传输侧行链路数据。示例性的，SL BSR的格式如图3所示。SL BSR包括一个或多个目标组信息，每个目标组信息包括一个目标索引(destination  index)、一个逻辑信道组标识(Logical Channel Group ID，LCG ID)、和一个缓冲区大小(buffer size)。
其中，目标索引用于表示对应的目标(destination)，该目标可以是单个终端设备，或者是终端设备组，还可以是广播业务转换得到的目标。也即，该目标索引用于指示数据接收方，数据接收方可以是一个或多个终端设备。
逻辑信道组标识用于指示一组逻辑信道(Logical channel，LCH)，该逻辑信道组标识所指示的逻辑信道有数据需要传输。
缓冲区大小用于表示根据SL数据量计算得到的有效数据量的大小。该缓冲区大小与一个目标下的一个逻辑信道组对应。
需要说明的是，由于发送给同一个目标的数据可能存在优先级大小之分(例如，存在不同优先级的逻辑信道组)，因此在一个SL BSR中可能存在相同的目标索引，这些相同的目标索引所对应的逻辑信道组标识不同，不同逻辑信道组标识对应不同的逻辑信道组。
在同一个SL BSR中也可以包含多个不同的目标索引，也即同一个终端设备可以同时请求向多个终端设备发送数据。
下面介绍SL逻辑信道优先级(Logical Channel Prioritization，LCP)机制。需要注意的是，SL LCP只有在每次新传的时候才执行。
终端设备在从网络设备获取到侧行链路传输资源之后，需要确定侧行链路传输资源用来传输哪个destination的哪些LCHs数据，包括以下两步：
步骤1，选择destination。
比如，终端设备在单播、组播、广播关联的LCHs中，选择最高优先级同时满足第一条件的LCHs对应的destination。再比如，终端设备在单播、组播、广播关联的媒体接入控制控制单元(medium access control control element，MAC CE)中，选择最高优先级同时满足第一条件的MAC CE对应的destination。
其中，第一条件可以是如下中的一种或多种：有有效的SL传输数据、SBj大于零、允许使用SL-CG type1(如果为SL grant时，对应的是configured grant type1)。其中，SL-CG是sidelink configured grant的简称。其中，SBj表示某个destination对应的第j个逻辑信道维护的令牌桶中当前可用的令牌数。
步骤2，选择LCHs。
比如，终端设备选择步骤1中选出来的destination所关联的满足第二条件的LCHs。
其中，第二条件可以是如下中的一种或多种：有有效的SL传输数据、允许使用SL-CG type1(如果为SL grant时，对应的是configured grant type1)、与步骤1选出的LCHs对应的混合自动重传请求(Hybrid automatic repeat request，HARQ)feedback enabled/disabled的属性相同。
基于背景技术介绍，在终端设备与终端设备之间进行通信之前，需要为发送侧的终端设备分配侧行链路传输资源，从而发送侧的终端设备可以在分配的侧行链路传输资源上向接收侧的终端设备发送侧行链路数据。为实现侧行链路传输资源的合理有效分配，本申请实施例中，可以由第一终端设备向第二终端设备发送用于指示一套或多套侧行链路传输资源的辅助信息，使得第二终端设备或网络设备可以基于参考该辅助信息指示的一套或多套 侧行链路传输资源，来分配或确定用于第二终端设备传输侧行链路数据的侧行链路传输资源，可以减少资源冲突或者资源浪费情形的发生，因而可以实现对侧行链路传输资源进行合理有效分配，进而可以提升侧行链路通信的效率。
比如，第二终端设备在模式2下，可以基于从第一终端设备收到的辅助信息(该辅助信息指示了一套或多套侧行链路传输资源)和/或预先为第二终端设备分配的资源池，来确定用于发送侧行链路数据的侧行链路传输资源。作为一种实现方法，该辅助信息指示的一套或多套侧行链路传输资源属于预先为第二终端设备分配的资源池的一部分，也即，该辅助信息指示的一套或多套侧行链路传输资源包含于预先为第二终端设备分配的资源池。当然，本申请实施例不限于辅助信息指示了一套或多套侧行链路传输资源与预先为第二终端设备分配的资源池之间的关系，二者也可能不存在相应关系。
再比如，第二终端设备在模式1下，可以向网络设备发送从第一终端设备收到的辅助信息，从而网络设备基于参考该辅助信息，为第二终端设备分配用于发送侧行链路数据的侧行链路传输资源。
再比如，第二终端设备在模式1+模式2下，则可以基于从第一终端设备收到的辅助信息和/或预先为第二终端设备分配的资源池，来确定用于发送侧行链路数据的侧行链路传输资源；或者还可以是向网络设备发送从第一终端设备收到的辅助信息，从而网络设备基于参考该辅助信息，为第二终端设备分配用于发送侧行链路数据的侧行链路传输资源。
基于上述资源分配机制，目前还存在如下一些问题需要解决，比如：
问题1，第一终端设备什么时候发送辅助信息给第二终端设备；
问题2，第一终端设备如何向第二终端设备发送辅助信息；
目前当第一终端设备需要向第二终端设备发送物理侧行链路共享信道(Pysical Sidelink Share Channel，PSSCH)数据时，先向网络设备请求用于发送侧行控制信息(Sidelink Control Information，SCI)和对应PSSCH的资源，该SCI用于指示PSSCH数据的传输。也即背景技术中只有在有待传输的PSSCH数据时，才能触发第一终端设备向网络设备请求用于发送SCI的资源。
以通过SCI携带辅助信息为例，如果第一终端设备将辅助信息携带于SCI中发送至第二终端设备，将存在如下问题：由于第一终端设备基于SCI发送辅助信息时可能并不伴随后续PSSCH数据的传输，或者说，第一终端设备需要向第二终端设备发送携带辅助信息的SCI，但该SCI并不指示后续PSSCH数据的传输，此时，第一终端设备将无法基于待传输数据触发向网络设备请求用于发送SCI的资源。例如，第一终端设备在模式1下，没有对应的LCH的待传输数据，则无法通过调度请求(Scheduling Request，SR)或BSR请求用于发送SCI的侧行链路传输资源。
问题3，第二终端设备如何使用辅助信息进行数据传输。
如果不去定义第二终端设备如何使用辅助信息，将可能导致第二终端设备没有按照辅助信息的指示进行侧行链路传输，影响资源利用率和降低侧行链路传输质量。
下面结合附图，示例性的介绍本申请为解决上述三个问题而提出的解决方案。
以下实施例中，第一终端设备向第二终端设备发送的辅助信息用于指示一套或多套资侧行链路传输资源，作为一种可选实现方法，该辅助信息比如可以包括侧行链路传输资源 的索引，用于指示一套或多套侧行链路传输资源。第二终端设备可以使用该一套或多套侧行链路传输资源向第一终端设备或其它终端设备发送侧行链路数据。
需要说明的是，以下实施例一至实施例三分别用于解决不同的问题，该三个实施例之间可以相互独立实施，也可以相互结合实施。
实施例一
该实施例用于解决上述问题1，即：第一终端设备什么时候发送辅助信息给第二终端设备。
下面给出三种不同的实现方法。
参考图4，为本申请实施例提供的无线通信方法示意图。该方法为用于解决上述问题1的第一种实现方法。
该方法包括以下步骤：
步骤401，第一终端设备获取第二终端设备的模式信息，该模式信息用于指示第二终端设备的资源调度方式。
步骤402，第一终端设备根据第二终端设备的模式信息，判断是否向第二终端设备发送辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
其中，模式信息用于指示第二终端设备的资源调度方式为模式1、模式2、模式1+模式2中的一种或多种。其中，模式1指的是网络设备调度模式，模式2指的是自主竞争模式，模式1+模式2指的是网络设备调度模式和自主竞争模式。容易理解的，模式信息用于指示第二终端设备的资源调度方式也可以理解为模式信息包含了指示第二终端设备的资源调度方式的信息。例如，模式信息中包含了指示第二终端设备的资源调度方式的字段或者比特位。
考虑到第二终端设备处于模式1时是基于网络设备调度的SL资源进行传输，从而第二终端设备可能只有处于模式2，或者处于模式1+模式2(即同时处于模式1和模式2)才可以利用第一终端设备的辅助信息进行SL传输。因此，当第一终端设备获取到第二终端设备的模式信息为模式1，则第一终端设备确定不向第二终端设备发送辅助信息。当第一终端设备获取到第二终端设备的模式信息为模式2或为模式1+模式2，则第一终端设备向第二终端设备发送辅助信息。
其中，第一终端设备获取第二终端设备的模式信息的方法包括但不限于以下方法a至方法d：
方法a，第二终端设备主动向第一终端设备发送第二终端设备的模式信息。
基于该实现方法，第二终端设备不需要基于第一终端设备的请求来向第一终端设备发送第二终端设备的模式信息，而是主动向第一终端设备发送第二终端设备的模式信息，从而可以减少信息交互，降低开销。
方法b，第一终端设备向第二终端设备发送模式信息请求消息(也可以称为第一请求)，用于请求获取第二终端设备的模式信息，第二终端设备基于该模式信息请求消息向第一终端设备发送第二终端设备的模式信息。
基于该实现方法，当第一终端设备需要获取第二终端设备的模式信息时，向第二终端设备发送第一请求，从而使得第二终端设备基于第一请求向第一终端设备发送第二终端设备的模式信息，从而避免当第一终端设备不需要第二终端设备的模式信息时，第二终端设 备仍向第一终端设备发送第二终端设备的模式信息，从而可以减少不必要的开销。
可选的，第二终端设备在向第一终端设备发送模式信息时，可以将模式信息承载于第一信息中发送至第一终端设备。该第一信息比如可以是PC5-无线资源控制(Radio Resource Control，RRC)信令、PC5-S消息、SL MAC CE或SCI。
方法c，第一终端设备接收来自网络设备的第二终端的模式信息。
也即，由网络设备向第一终端设备发送第二终端设备的模式信息。
基于该实现方法，第一终端设备不需要从第二终端设备获取第二终端设备的模式信息，而是从网络设备获取第二终端设备的模式信息，从而可以减少终端设备之间的交互，可以降低第二终端设备的能耗。
方法d，从第一终端设备获取该第二终端设备的模式信息。
或者理解为，第一终端设备从本地获取第二终端设备的模式信息。其中，第一终端设备中存储的第二终端设备的模式信息可以是预配置。
基于该实现方法，将第二终端设备的模式信息预配置在第一终端设备，如此第一终端设备不需要从外部设备获取第二终端设备模式信息，减少了第一终端设备与外部设备之间的交互，从而降低第一终端设备的能耗。
基于上述方法，由于及时地让第二终端设备获取到辅助信息，从而可以保证SL的传输质量。
参考图5，为本申请实施例提供的无线通信方法示意图。该方法为用于解决上述问题1的第二种实现方法。
该方法包括以下步骤：
步骤501，第二终端设备向第一终端设备发送辅助信息请求消息(也可以称为第二请求)，该辅助信息请求消息用于请求获取辅助信息。
步骤502，第一终端设备基于该辅助信息请求消息，向第二终端设备发送辅助信息。
基于该方法，第二终端设备主动向第一终端设备请求获取辅助信息。
考虑到第二终端设备处于模式1时是基于网络设备调度的SL资源进行传输，从而第二终端设备可能只有处于模式2，或者处于模式1+模式2(既处于模式1也处于模式2)才可以利用第一终端设备的辅助信息进行SL传输。因此，作为一种实现方法，第二终端设备的模式信息为模式2或模式1+模式2时，第二终端设备才向第一终端设备发送辅助信息请求消息。作为另一种实现方法，不管第二终端设备的模式信息是模式1、模式2或模式1+模式2，第二终端设备都可以向第一终端设备发送辅助信息请求消息。
作为一种实现方法，当第二终端设备满足预设策略条件时，第二终端设备向第一终端设备发送辅助信息请求消息。该预设策略条件可以是信道忙碌率(Channel busy ratio，CBR)、参考信号接收功率(reference signal receiving power,RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收信号强度指示(received signal strength indication，RSSI)、信号与干扰加噪声比(Signal to interference plus noise ratio，SINR)或电量等中的一种或多种参数的值达到预设的阈值或范围。示例性的，当第二终端设备的CBR处于预设CRB范围内，或者大于等于预设的CBR阈值时，第二终端设备向第一终端设备发送辅助信息请求消息。该预设条件还可以包括第二终端设备处于模式2或者处于模式1+模式2。
可选的，该预设策略条件可以通过RRC消息或者RRC专用信息配置给第二终端设备， 或者是通过系统消息块(System Information Block，SIB)配置给第二终端设备，或者是预配置给第二终端设备，或者是协议预定义的。其中，预配置比如可以是核心网配置或者V2X应用服务器配置，例如初始入网时配置。可选的，预配置的预设策略条件是可以更新修改的，为不同终端设备预配置的预设策略条件可以不同。协议预定义的预设策略条件是不能更改的，且协议预定义的预设策略条件在不同终端设备中是相同的。
基于上述方法，第一终端设备在接收到第二终端设备的辅助信息请求消息时，才向第二终端设备发送辅助信息，避免不必要的信息交互，减少资源浪费。并且由于及时地让第二终端设备获取到辅助信息，从而可以保证SL的传输质量。
参考图6，为本申请实施例提供的无线通信方法示意图。该方法为用于解决上述问题1的第三种实现方法。
该方法包括以下步骤：
步骤601，第一终端设备确定满足预设策略条件。
该步骤为可选步骤。
该预设策略条件可以是CBR、RSRP、RSRQ、RSSI、SINR、电量等中的一种或多种参数的值达到预设的阈值或范围。示例性的，当第一终端设备的CBR处于预设CRB范围内，或者大于等于预设的CBR阈值时，第一终端设备向第二终端设备发送辅助信息。
可选的，该预设策略条件可以通过RRC专用信息配置给第一终端设备，或者是通过SIB配置给第一终端设备，或者是预配置给第一终端设备，或者是协议预定义的。
步骤602，第一终端设备向第二终端设备发送辅助信息。
上述方案是第一终端设备在确定满足预设策略条件时向第二终端设备发送辅助信息。作为另一种实现方法，第一终端设备也可以是周期性地先该第二终端设备发送辅助信息。
基于上述方法，第一终端设备可以基于自身判断，主动向第二终端设备发送辅助信息，可以减少信息交互，从而减少资源浪费。并且由于及时地让第二终端设备获取到辅助信息，从而可以保证SL的传输质量。
实施例二
该实施例用于解决上述问题2，即：第一终端设备如何向第二终端设备发送辅助信息。
该实施例中考虑第一终端设备处于模式1，且第一终端设备基于SCI向第二终端设备发送辅助信息。基于前述分析可知，由于该SCI不关联后续的PSSCH数据的传输，因此无法按照现有技术触发SR或BSR向网络设备请求侧行链路传输资源，从而没有侧行链路传输资源来发送辅助信息。为解决该问题，本申请实施例可以由第一终端设备获取用于发送辅助信息的第一侧行链路传输资源。然后，第一终端设备在第一侧行链路传输资源上向第二终端设备发送第一信息，该第一信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。可选的，第一信息比如可以是PC5-RRC信令、PC5-S消息、SL MAC CE或SCI。
为便于说明，以下以第一信息为SCI为例进行说明。
下面给出第一终端设备获取用于发送辅助信息的第一侧行链路传输资源的两种不同实现方法。
参考图7，为本申请实施例提供的无线通信方法示意图。该方法为第一终端设备获取 用于发送辅助信息的第一侧行链路传输资源的第一种实现方法。
该方法包括以下步骤：
步骤701，第一终端设备在专用资源上向网络设备发送专用调度请求(dedicated SR)，专用调度请求用于请求分配用于发送SCI的侧行链路传输资源。
步骤702，第一终端设备接收来自网络设备的第一侧行链路传输资源。
基于上述方案，预先为传输辅助信息的SCI关联一个专用的配置，第一终端设备基于专用的SR配置请求网络设备分配用于发送辅助信息的侧行链路传输资源。
示例性的，协议预定义或者网络设备配置该SCI对应的SR ID。当第一终端设备在该SR ID对应的资源上向网络设备发送SR时，网络设备基于该资源可以获知第一终端设备请求用于传输辅助信息的侧行链路传输资源，进而可以为第一终端设备配置相应的侧行链路传输资源。
可选的，考虑到辅助信息可能指示多套侧行链路资源，SCI每次传输的辅助信息所指示的侧行链路传输资源的数量可能不同，因此向网络设备请求的用于发送辅助信息的侧行链路传输资源的大小可能不同，为此，需要明确如何让网络设备准确配置相应大小的侧行链路传输资源。下面给出三种不同的实现方法：
作为第一种实现方法，可以预先定义多个SCI的格式(SCI format)，一个SCI format可以对应传输一套或多套侧行链路传输资源，不同格式的SCI携带的辅助信息所指示的侧行链路传输资源的大小不同。比如SCI format 1对应传输1套侧行链路传输资源，SCI format2对应传输2套侧行链路传输资源，以此类推。并且，不同格式的SCI对应的专用资源不同，比如，SCI format 1对应专用SR配置为：SR ID 1，资源1，SCI format 2对应专用SR配置为：SR ID 2，资源2。比如第一终端设备可以根据待传输的辅助信息的大小确定相应的SCI的格式，然后根据SCI的格式，确定相应的专用资源，然后该在专用资源(比如是资源1)上向网络设备发送SR，则网络设备可以确定为第一终端设备分配SCI format 1对应的侧行链路传输资源，以用于传输SCI。
可选的，第一终端设备可以通过第一级SCI(first stage SCI)中的指示信息，来指示第二级SCI(second stage SCI)对应的format，从而第二终端设备可以根据该指示信息获知第一终端设备发送的辅助信息所指示的侧行链路传输资源的大小。例如，SCI是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，所述第一级SCI中的指示信息指示了所述第二级SCI携带的辅助信息的大小。也就是说，可以通过两级SCI联合指示辅助信息，第一级SCI指示第二级SCI，第二级SCI承载辅助信息。容易理解的，上述第一级SCI的指示信息仅为举例，能实现指示第二级SCI承载的辅助信息的关联信息的信息都可以携带在第一级SCI的指示信息中，并且可以携带该关联信息的部分或全部。例如，该关联信息可以是与辅助信息的大小关联的信息、辅助信息中指示的资源关联的信息等。
可选的，SCI是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，该辅助信息也可以携带在第一级SCI中，本申请实施例并不限定。类似的，第一级SCI也可以携带辅助信息的关联信息。
作为第二种实现方法，可以预先定义一个SCI的格式(SCI format)，该SCI format可以对应多种SCI大小，不同大小的SCI携带的辅助信息所指示的侧行链路传输资源的大小不同。比如第一种SCI大小对应传输1套侧行链路传输资源，第二种SCI大小对应传输2套侧行链路传输资源，以此类推。并且，不同大小的SCI对应的专用资源不同，比如，第 一种SCI大小对应专用SR配置为：SR ID 1，资源1，第二种SCI大小对应专用SR配置为：SR ID 2，资源2。比如第一终端设备可以根据待传输的辅助信息的大小确定相应的SCI的大小，然后根据SCI的大小，确定相应的专用资源，然后该在专用资源(比如是资源1)上向网络设备发送SR，则网络设备可以确定为第一终端设备分配第一种SCI大小对应的侧行链路传输资源，以用于传输SCI。
作为第三种实现方法，引入截断SCI(truncated SCI)。可以理解，当通过专用SR请求的侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小时，可以通过truncated SCI发送尽可能多的辅助信息。普通(normal)SCI的format与截断(truncated)SCI的format不同。比如，一个普通SCI可以传输100兆字节的辅助信息，但第一终端设备通过专用SR请求的侧行链路传输资源的大小不能传输100兆字节的辅助信息，则第一终端设备确定采用截断SCI来传输一部分辅助信息，比如传输50兆字节的辅助信息，从而第一终端设备生成截断SCI，该截断SCI携带50兆字节的辅助信息。可选的，可以通过first stage SCI中的指示信息指示second stage SCI对应的是普通SCI(normal SCI)还是截断SCI(truncated SCI)。从而第二终端设备可以根据该指示信息获知第一终端设备发送的辅助信息所指示的侧行链路传输资源是全部的侧行链路传输资源还是部分的侧行链路传输资源。
需要说明的是，上述给出的实现方案中，是通过专用资源和专用调度请求，向网络设备请求分配用于发送SCI的侧行链路传输资源。作为另一种实现方法，也可以是在非专用资源(比如可以是公共资源)上向网络设备发送调度请求，该调度请求用于请求分配用于发送该SCI的侧行链路传输资源，然后接收来自该网络设备的该第一侧行链路传输资源。可选的，第一终端设备可以根据SCI format，确定该非专用资源；其中，不同格式的SCI对应的非专用资源不同，不同格式的SCI携带的辅助信息所指示的侧行链路传输资源的大小不同。可选的，第一终端设备可以根据SCI的大小，确定该非专用资源；其中，不同大小的SCI对应的非专用资源不同，不同大小的SCI携带的辅助信息所指示的侧行链路传输资源的大小不同。
因此，第一终端设备可以在资源(如专用资源或非专用资源)上向网络设备发送调度请求，该调度请求用于请求分配用于发送SCI的侧行链路传输资源。然后，第一终端设备接收来自网络设备的第一侧行链路传输资源。
参考图8，为本申请实施例提供的无线通信方法示意图。该方法为第一终端设备获取用于发送辅助信息的第一侧行链路传输资源的第二种实现方法。
该方法包括以下步骤：
步骤801，第一终端设备向网络设备发送缓冲区状态报告(BSR)，缓冲区状态报告用于请求分配用于发送侧行链路控制信息的侧行链路传输资源，缓冲区状态报告指示了待传输的辅助信息的大小。
步骤802，第一终端设备接收来自网络设备的第一侧行链路传输资源。
基于上述方案，第一终端设备基于BSR的上报，来获取用于发送辅助信息的侧行链路传输资源。
其中，该BSR也可以称为BL BSR。
其中，SL BSR的格式可以参考图3。当第一终端设备向网络设备发送SL BSR，以向 网络设备请求获取用于发送辅助信息的侧行链路传输资源，则SL BSR中的Buffer size的大小可以是待传输的辅助信息的大小。示例性的，buffer size的大小为承载辅助信息的待传输的SCI的大小。
作为示例，下面给出三种具体实现方法。
作为第一种实现方法，可以沿用现有的SL BSR format，即图3所示的格式，并且当SL BSR中的目标索引是一个专用目标索引时，该专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，因此该SL BSR用于请求辅助信息对应的侧行链路传输资源。可以理解，网络设备根据该专用目标索引对应的buffer size的大小来配置相应的侧行链路传输资源。也即，专用目标索引与待传输的辅助信息的大小对应。
作为第二种实现方法，可以沿用现有的SL BSR format，即图3所示的格式，并且当SL BSR中的逻辑信道组标识是一个专用逻辑信道组标识时，该专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，因此该SL BSR用于请求辅助信息对应的侧行链路传输资源。可以理解，网络设备根据该专用逻辑信道组标识对应的buffer size的大小来配置相应的侧行链路传输资源。也即，专用逻辑信道组标识与待传输的辅助信息的大小对应。
作为第三种实现方法，可以不沿用现有的SL BSR format，而是使用一个专用缓冲区状态报告，该专用缓冲区状态报告对应一个专用BSR format，该专用缓冲区状态报告用于请求辅助信息对应的侧行链路传输资源。可以理解，网络设备根据该专用BSR format对应的buffer size的大小来配置相应的侧行链路传输资源。该专用缓冲区状态报告可以理解为是一个仅用于请求配置侧行链路传输资源的缓冲区状态报告。
可以理解，专用的BSR format和现有的SL BSR format可以是不同的MAC CE。比如，可以另外设计一个MAC CE来支持专用的BSR format，该另外设计的MAC CE与现有的SL BSR format对应的MAC CE不同。“专用的”可以体现为：每个MAC CE有自己的LCID来标识自己。这里专用的BSR format，相当于有一个专用的LCID对应的MAC CE。
可选的，由第一终端设备的MAC层确定辅助信息以及对应的侧行链路传输资源，并指示给物理层(PHY层)去发送。
可以理解，该实施例以SCI承载辅助信息来描述，当以SL MAC CE承载辅助信息时，该实施例的方案也可以适用。
基于上述方案，第一终端设备能够获取用于发送辅助信息的侧行链路传输资源，保证辅助信息能够正常发送出去，从而第二终端设备接收到辅助信息后可以基于辅助信息更好的进行SL通信提升通信质量。
需要说明的是，上述给出的实现方案中，是通过专用目标索引、专用逻辑信道组标识或专用缓冲区状态报告向网络设备请求分配用于发送SCI的侧行链路传输资源。作为另一种实现方法，也可以是通过非专用缓冲区状态报告(例如是公共缓冲区状态报告)向网络设备请求分配用于发送SCI的侧行链路传输资源，该非专用缓冲区状态报告可以携带非专用目标索引(例如是公共目标索引)，该非专用目标索引可以用于请求分配用于发送辅助信息的侧行链路传输资源，或者是该非专用缓冲区状态报告可以携带非专用逻辑信道组标识(例如是公共逻辑信道组标识)，该非专用逻辑信道组标识可以用于请求分配用于发送辅助信息的侧行链路传输资源。
因此，第一终端设备可以向网络设备发送缓冲区状态报告(如专用缓冲区状态报告或 非专用缓冲区状态报告)，该缓冲区状态报告用于请求分配用于发送SCI的侧行链路传输资源。然后，第一终端设备接收来自网络设备的第一侧行链路传输资源。
实施例三
该实施例用于解决上述问题3，第二终端设备如何使用辅助信息指示的一套或多套资侧行链路传输资源进行数据传输。
为解决该问题，本申请实施例中，当第二终端设备接收到来自第一终端设备的辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源，则第二终端设备根据第二终端设备的模式信息处理该辅助信息，其中，第二终端设备的模式信息用于指示第二终端设备的资源调度方式。具体的，第二终端设备的模式信息包括模式1、或模式2、或模式1+模式2。
下面根据第二终端设备的模式信息的不同，给出第二终端设备根据第二终端设备的模式信息处理该辅助信息的三种不同实现方法。
方法一，第二终端设备的模式信息用于指示第二终端设备处于模式1，或者处于模式1+模式2，当第二终端设备收到辅助信息，第二终端设备可以向网络设备上报辅助信息，进而网络设备可以基于辅助信息，为第二终端设备分配第一侧行链路传输资源。
可选的，第二终端设备可以基于侧行链路用户信息(Sidelink UE information，SUI)消息、用户辅助信息(UE Assistant information，UAI)消息等向网络设备上报辅助信息。
可选的，第二终端设备上报辅助信息时，还可以同时上报该辅助信息关联的destination L2ID。可以理解，这里的destination L2ID也就是发送该辅助信息的第一终端设备的source L2ID。
方法二，第二终端设备的模式信息用于指示第二终端设备处于模式1，或者处于模式1+模式2，第二终端设备可以丢弃或忽视该辅助信息。
示例性的，第二终端设备可以在MAC层或者RRC层判断是否需要丢弃或忽视该辅助信息。
可选的，第二终端设备只丢弃或忽视辅助信息所指示的一套或多套资侧行链路传输资源中的优选不使用的侧行链路传输资源。
可选的，第二终端设备丢弃或忽视辅助信息后，向第一终端设备反馈指示信息，该指示信息用于指示第二终端设备不再需要辅助信息，从而避免第一终端设备后续再向第二终端设备发送不必要的辅助信息。示例性的，该指示信息可以承载于PC5-RRC信令、SL MAC CE或物理层侧链反馈信道(Physical Sidelink feedback Channel，PSFCH)信道上。
方法三，第二终端设备的模式信息用于指示第二终端设备处于模式2，当第二终端设备收到辅助信息，第二终端设备可以基于该辅助信息为第二终端设备分配或确定第一侧行链路传输资源。
基于上述各种方案，第二终端设备接收到辅助信息后，可以基于辅助信息获取更合理的侧行链路传输资源或者基于侧行链路传输资源选择合适的destination进行通信，有助于提高资源利用率，保证SL通信质量。
作为一种实现方法，不管第二终端设备处于模式1、模式2还是模式1+模式2，第二终端设备接收到来自第一终端设备的辅助信息后，如果辅助信息指示的一套或多套侧行链 路传输资源中包括优选使用的侧行链路传输资源，并且第二终端设备或网络设备确定的用于传输第二终端设备的侧行链路数据的第一侧行链路传输资源中包含该优选使用的侧行链路传输资源中的部分或全部资源，也即第一侧行链路传输资源对应于优选使用的侧行链路传输资源，则该第一侧行链路传输资源优先用于或仅用于第二终端设备向第一终端设备发送侧行链路数据。示例性的，第一终端设备向第二终端设备发送的辅助信息指示了优选使用的侧行链路传输资源，且优选使用的侧行链路传输资源包括资源1、资源2和资源3，第二终端设备或网络设备确定的用于传输第二终端设备的侧行链路数据的第一侧行链路传输资源包括资源1、资源4和资源5，则作为一种方式，该资源1、资源4和资源5优先用于或仅用于第二终端设备向第一终端设备发送侧行链路数据，或者作为另一种方式，该资源1优先用于或仅用于第二终端设备向第一终端设备发送侧行链路数据，该资源4和资源5可以优先用于或仅用于第二终端设备向第一终端设备发送侧行链路数据，或者也可以不是优先用于或仅用于第二终端设备向第一终端设备发送侧行链路数据。基于该实现方法，当第一侧行链路传输资源对应于优选使用的侧行链路传输资源时，在基于SL LCP选择destination时，优先选择或者只选择第一终端设备对应的destination。
需要说明的是，这里的“优先选择”可以理解为：当有第一终端设备对应的destination时，则优先选择第一终端设备对应的destination，当没有第一终端设备对应的destination，则按照现有技术方案，选择其它终端设备对应的destination。这里的“只选择”可以理解为：当有第一终端设备对应的destination时，则选择第一终端设备对应的destination，当没有第一终端设备对应的destination时，则也不选择其它终端设备对应的destination，也即不为其它终端设备分配侧行链路传输资源。
需要说明的是，上述优选使用的侧行链路传输资源也可以理解为是第二终端设备传输时的优选资源集合(Support resource set which is preferred for UE’s transmission)。
作为一种实现方法，不管第二终端设备处于模式1、模式2还是模式1+模式2，第二终端设备接收到来自第一终端设备的辅助信息后，如果辅助信息指示的一套或多套侧行链路传输资源中包括优选不使用的侧行链路传输资源，并且第二终端设备或网络设备确定的用于传输第二终端设备的侧行链路数据的第一侧行链路传输资源中包含该优选不使用的侧行链路传输资源中的部分或全部资源，也即第一侧行链路传输资源对应于优选不使用的侧行链路传输资源，则该第一侧行链路传输资源不用于第二终端设备向第一终端设备发送侧行链路数据。示例性的，第一终端设备向第二终端设备发送的辅助信息指示了优选不使用的侧行链路传输资源，且优选不使用的侧行链路传输资源包括资源4和资源5，第二终端设备或网络设备确定的用于传输第二终端设备的侧行链路数据的第一侧行链路传输资源包括资源1、资源4和资源5，则作为一种方式，该资源1、资源4和资源5不用于第二终端设备向第一终端设备发送侧行链路数据，或者作为另一种方式，该资源4和资源5不用于第二终端设备向第一终端设备发送侧行链路数据，该资源1可以用于或者不用于第二终端设备向第一终端设备发送侧行链路数据。基于该实现方法，当第一侧行链路传输资源对应于优选不使用的侧行链路传输资源时，在基于SL LCP选择destination时，不选择第一终端设备对应的destination。
需要说明的是，上述优选不使用的侧行链路传输资源也可以理解为是第二终端设备传输时优选不使用的资源集合(Support resource set which is preferred not to be used by UE’s  transmission)。
参考图9，为本申请实施例提供的一种通信装置的示意图。该装置用于实现上述实施例中对应第一终端设备或第二终端设备所执行的各个步骤，如图9所示，该装置900包括收发单元910和处理单元920。
在第一个实施例中，该通信装置为第一终端设备或为用于第一终端设备的芯片，则：
处理单元920，用于获取第二终端设备的模式信息，所述模式信息用于指示所述第二终端设备的资源调度方式；
处理单元920用于根据所述模式信息，通过收发单元910向所述第二终端设备发送辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源。
作为一种可能的实现方法，所述处理单元920，用于获取第二终端设备的模式信息，具体包括：
用于通过所述收发单元910接收来自所述第二终端设备的所述模式信息。
作为一种可能的实现方法，所述收发单元910，还用于向所述第二终端设备发送第一请求，所述第一请求用于请求获取所述模式信息。
作为一种可能的实现方法，所述处理单元920，用于根据所述模式信息，通过收发单元910向所述第二终端设备发送辅助信息，具体包括：
用于当确定所述模式信息指示所述第二终端设备处于网络设备调度模式和自主竞争模式，通过收发单元910向所述第二终端设备发送所述辅助信息；或者，
用于当确定所述模式信息指示所述第二终端设备处于自主竞争模式，通过收发单元910向所述第二终端设备发送所述辅助信息。
作为一种可能的实现方法，所述处理单元920，还用于获取用于发送所述辅助信息的第一侧行链路传输资源；
所述处理单元920，用于根据所述模式信息，通过收发单元910向所述第二终端设备发送辅助信息，具体包括：
用于根据所述模式信息，通过收发单元910在所述第一侧行链路传输资源上向所述第二终端设备发送第一信息，所述第一信息携带所述辅助信息。
作为一种可能的实现方法，所述处理单元920，用于获取用于发送所述辅助信息的第一侧行链路传输资源，具体包括：
用于通过所述收发单元910在专用资源上向网络设备发送专用调度请求，所述专用调度请求用于请求分配用于发送所述第一信息的侧行链路传输资源；通过所述收发单元910接收来自所述网络设备的所述第一侧行链路传输资源。
作为一种可能的实现方法，所述处理单元920，还用于根据所述第一信息的格式，确定所述专用资源；其中，不同格式的第一信息对应的专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，所述处理单元920，还用于根据所述第一信息的大小，确定所述专用资源；其中，不同大小的第一信息对应的专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，所述处理单元920，还用于确定所述第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的所述 第一信息，所述第一信息携带的所述辅助信息少于所述待传输的辅助信息。
作为一种可能的实现方法，所述处理单元920，用于获取用于发送所述辅助信息的第一侧行链路传输资源，包括：
用于通过所述收发单元910向网络设备发送缓冲区状态报告，所述缓冲区状态报告用于请求分配用于发送所述第一信息的侧行链路传输资源，所述缓冲区状态报告指示了待传输的辅助信息的大小；通过所述收发单元910接收来自所述网络设备的所述第一侧行链路传输资源。
作为一种可能的实现方法，所述缓冲区状态报告携带专用目标索引，所述专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用目标索引与所述待传输的辅助信息的大小对应。
作为一种可能的实现方法，所述缓冲区状态报告携带专用逻辑信道组标识，所述专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用逻辑信道组标识与所述待传输的辅助信息的大小对应。
作为一种可能的实现方法，所述缓冲区状态报告是专用缓冲区状态报告。
作为一种可能的实现方法，所述第一信息包括以下任一种：
侧行链路控制信息SCI、PC5-无线资源控制RRC信令、侧行链路媒体接入控制控制单元SL MAC CE。
作为一种可能的实现方法，所述第一信息是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，所述第一级SCI中的指示信息指示了所述第二级SCI携带的所述辅助信息的大小。
作为一种可能的实现方式，所述第一信息是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，该辅助信息携带在第一级SCI中。
作为一种可能的实现方法，所述处理单元920，还用于在根据所述模式信息，通过收发单元910向所述第二终端设备发送辅助信息之前，确定满足预设策略条件；
其中，所述预设策略条件包括：第一终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
在第二个实施例中，该通信装置为第二终端设备或为用于第二终端设备的芯片，则：
收发单元910，用于接收来自第一终端设备的辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源；
处理单元920，用于根据第二终端设备的模式信息，处理所述辅助信息，所述模式信息用于指示所述第二终端设备的资源调度方式。
作为一种可能的实现方法，所述处理单元920，用于根据所述第二终端设备的模式信息，处理所述辅助信息，具体包括：
所述模式信息用于指示所述第二终端设备处于自主竞争模式，用于根据所述辅助信息，确定用于传输所述第二终端设备的侧行链路数据的第一侧行链路传输资源。
作为一种可能的实现方法，所述处理单元920，用于根据所述第二终端设备的模式信息，处理所述辅助信息，具体包括：
所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或 处于网络设备调度模式，用于通过所述收发单元910向网络设备发送所述辅助信息，所述辅助信息用于第一侧行链路传输资源的生成，所述第一侧行链路传输资源用于传输所述第二终端设备的侧行链路数据。
作为一种可能的实现方法，所述辅助信息指示的一套或多套侧行链路传输资源中包括优选使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选使用的侧行链路传输资源，所述第一侧行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
作为一种可能的实现方法，所述第一侧行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
基于侧行链路逻辑信道优先级机制选择的目标终端设备包括所述第一终端设备。
作为一种可能的实现方法，所述辅助信息指示的一套或多套侧行链路传输资源中包括优选不使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选不使用的侧行链路传输资源，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
作为一种可能的实现方法，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
基于侧行链路逻辑信道优先级机制选择的目标终端设备不包括所述第一终端设备。
作为一种可能的实现方法，所述处理单元920，用于根据所述第二终端设备的模式信息，处理所述辅助信息，具体包括：
所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，用于丢弃或忽视所述辅助信息。
作为一种可能的实现方法，所述收发单元910，还用于向所述第一终端设备发送所述模式信息。
作为一种可能的实现方法，所述收发单元910，还用于接收来自所述第一终端设备的第一请求，所述第一请求用于请求获取所述模式信息。
作为一种可能的实现方法，所述收发单元910，还用于向所述第一终端设备发送第二请求，所述第二请求用于请求获取辅助信息。
作为一种可能的实现方法，所述处理单元920，还用于确定满足预设策略条件；
其中，所述预设策略条件包括：所述第二终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
在第三个实施例中，该通信装置为第一终端设备或为用于第一终端设备的芯片，则：
收发单元910，用于在专用资源上向网络设备发送专用调度请求，该专用调度请求用于请求分配用于发送侧行链路控制信息的侧行链路传输资源；接收来自该网络设备的第一侧行链路传输资源；在该第一侧行链路传输资源上，向第二终端设备发送侧行链路控制信息，该侧行链路控制信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
作为一种可能的实现方法，处理单元920，用于根据该侧行链路控制信息的格式，确定该专用资源；其中，不同格式的侧行链路控制信息对应的专用资源不同，不同格式的侧 行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，处理单元920，用于根据该侧行链路控制信息的大小，确定该专用资源；其中，不同大小的侧行链路控制信息对应的专用资源不同，不同大小的侧行链路控制信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
作为一种可能的实现方法，处理单元920，用于确定该第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的该侧行链路控制信息，该侧行链路控制信息携带的该辅助信息少于该待传输的辅助信息。
作为一种可能的实现方法，收发单元910，还用于接收来自该第二终端设备的模式信息，该模式信息用于指示该第二终端设备处于自主竞争模式，或处于自住竞争模式和网络设备调度模式。
作为一种可能的实现方法，收发单元910，还用于向该第二终端设备发送第一请求，该第一请求用于请求获取该模式信息。
作为一种可能的实现方法，收发单元910，还用于接收来自该第二终端设备的第二请求，该第二请求用于请求获取辅助信息。
作为一种可能的实现方法，处理单元920，用于确定满足预设策略条件；其中，该预设策略条件包括：该第一终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
在第四个实施例中，该通信装置为第一终端设备或为用于第一终端设备的芯片，则：
收发单元910，用于向网络设备发送缓冲区状态报告，该缓冲区状态报告用于请求分配用于发送侧行链路控制信息的侧行链路传输资源，该缓冲区状态报告指示了待传输的辅助信息的大小；接收来自该网络设备的第一侧行链路传输资源；在该第一侧行链路传输资源上，向第二终端设备发送侧行链路控制信息，该侧行链路控制信息携带辅助信息，该辅助信息用于指示一套或多套侧行链路传输资源。
作为一种可能的实现方法，该缓冲区状态报告携带专用目标索引，该专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，该专用目标索引与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告携带专用逻辑信道组标识，该专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，该专用逻辑信道组标识与该待传输的辅助信息的大小对应。
作为一种可能的实现方法，该缓冲区状态报告是专用缓冲区状态报告。
作为一种可能的实现方法，收发单元910，还用于接收来自该第二终端设备的模式信息，该模式信息用于指示该第二终端设备处于自主竞争模式，或处于自住竞争模式和网络设备调度模式。
作为一种可能的实现方法，收发单元910，还用于向该第二终端设备发送第一请求，该第一请求用于请求获取该模式信息。
作为一种可能的实现方法，收发单元910，还用于接收来自该第二终端设备的第二请求，该第二请求用于请求获取辅助信息。
作为一种可能的实现方法，处理单元920，用于确定满足预设策略条件；其中，该预设策略条件包括：该第一终端设备的CBR、RSRP、RSRQ、RSSI、SINR或电量中的一种 或多种参数的值达到预设的阈值或范围。
可选的，上述通信装置900还可以包括存储单元，该存储单元用于存储数据或者指令(也可以称为代码或者程序)，上述各个单元可以和存储单元交互或者耦合，以实现对应的方法或者功能。例如，处理单元920可以读取存储单元中的数据或者指令，使得通信装置实现上述实施例中的方法。
应理解以上装置中单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且装置中的单元可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分单元以软件通过处理元件调用的形式实现，部分单元以硬件的形式实现。例如，各个单元可以为单独设立的处理元件，也可以集成在装置的某一个芯片中实现，此外，也可以以程序的形式存储于存储器中，由装置的某一个处理元件调用并执行该单元的功能。此外这些单元全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件又可以成为处理器，可以是一种具有信号的处理能力的集成电路。在实现过程中，上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路实现或者以软件通过处理元件调用的形式实现。
在一个例子中，以上任一装置中的单元可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)，或这些集成电路形式中至少两种的组合。再如，当装置中的单元可以通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序的处理器。再如，这些单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
以上收发单元910是一种该装置的接口电路，用于从其它装置接收信号或向其它装置发送信号。例如，当该装置以芯片的方式实现时，该收发单元910是该芯片用于从其它芯片或装置接收信号的接口电路、或向其它芯片或装置发送信号的接口电路。
参考图10，为本申请实施例提供的一种通信装置示意图。用于实现以上实施例中第一终端设备或第二终端设备的操作。如图10所示，该通信装置包括：处理器1010和接口1030，可选的，该通信装置还包括存储器1020。接口1030用于实现与其他设备进行通信。
以上实施例中第一终端设备或第二终端设备执行的方法可以通过处理器1010调用存储器(可以是第一终端设备或第二终端设备中的存储器1020，也可以是外部存储器)中存储的程序来实现。即，第一终端设备或第二终端设备可以包括处理器1010，该处理器1010通过调用存储器中的程序，以执行以上方法实施例中第一终端设备或第二终端设备执行的方法。这里的处理器可以是一种具有信号的处理能力的集成电路，例如CPU。第一终端设备或第二终端设备可以通过配置成实施以上方法的一个或多个集成电路来实现。例如：一个或多个ASIC，或，一个或多个微处理器DSP，或，一个或者多个FPGA等，或这些集成电路形式中至少两种的组合。或者，可以结合以上实现方式。
具体的，图9中的收发单元910和处理单元920的功能/实现过程可以通过图10所示的通信装置1000中的处理器1010调用存储器1020中存储的计算机可执行指令来实现。或者，图9中的处理单元920的功能/实现过程可以通过图10所示的通信装置1000中的处 理器1010调用存储器1020中存储的计算机执行指令来实现，图9中的收发单元910的功能/实现过程可以通过图10中所示的通信装置1000中的接口1030来实现。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也表示先后顺序。“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这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。“至少一个”是指一个或者多个。至少两个是指两个或者多个。“至少一个”、“任意一个”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、种)，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。“多个”是指两个或两个以上，其它量词与之类似。
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，而不应对本发明实施例的实施过程构成任何限定。
本申请还提供了一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
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。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述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，所述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(例如同轴电缆、光纤、数字用户线(DSL))或无线(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。所述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括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述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(例如固态硬盘(solid state disk，SSD))等。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器，专用集成电路(ASIC)，现场可编程门阵列(FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单 元、或者这两者的结合。软件单元可以存储于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理器连接，以使得处理器可以从存储媒介中读取信息，并可以向存储媒介存写信息。可选地，存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个或多个示例性的设计中，本申请所描述的上述功能可以在硬件、软件、固件或这三者的任意组合来实现。如果在软件中实现，这些功能可以存储与电脑可读的媒介上，或以一个或多个指令或代码形式传输于电脑可读的媒介上。电脑可读媒介包括电脑存储媒介和便于使得让电脑程序从一个地方转移到其它地方的通信媒介。存储媒介可以是任何通用或特殊电脑可以接入访问的可用媒体。例如，这样的电脑可读媒体可以包括但不限于RAM、ROM、EEPROM、CD-ROM或其它光盘存储、磁盘存储或其它磁性存储装置，或其它任何可以用于承载或存储以指令或数据结构和其它可被通用或特殊电脑、或通用或特殊处理器读取形式的程序代码的媒介。此外，任何连接都可以被适当地定义为电脑可读媒介，例如，如果软件是从一个网站站点、服务器或其它远程资源通过一个同轴电缆、光纤电脑、双绞线、数字用户线(DSL)或以例如红外、无线和微波等无线方式传输的也被包含在所定义的电脑可读媒介中。所述的碟片(disk)和磁盘(disc)包括压缩磁盘、镭射盘、光盘、数字通用光盘(英文：Digital Versatile Disc，简称：DVD)、软盘和蓝光光盘，磁盘通常以磁性复制数据，而碟片通常以激光进行光学复制数据。上述的组合也可以包含在电脑可读媒介中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。本申请说明书的上述描述可以使得本领域技术任何可以利用或实现本申请的内容，任何基于所公开内容的修改都应该被认为是本领域显而易见的，本申请所描述的基本原则可以应用到其它变形中而不偏离本申请的发明本质和范围。因此，本申请所公开的内容不仅仅局限于所描述的实施例和设计，还可以扩展到与本申请原则和所公开的新特征一致的最大范围。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附 权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。

Claims (60)

  1. 一种无线通信方法，用于第一终端设备，其特征在于，包括：
    获取第二终端设备的模式信息，所述模式信息用于指示所述第二终端设备的资源调度方式；
    根据所述模式信息，向所述第二终端设备发送辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源。
  2. 如权利要求1所述的方法，其特征在于，所述获取第二终端设备的模式信息包括：
    接收来自所述第二终端设备的所述模式信息。
  3. 如权利要求2所述的方法，其特征在于，还包括：
    向所述第二终端设备发送第一请求，所述第一请求用于请求获取所述模式信息。
  4. 如权利要求1-3任一所述的方法，其特征在于，所述根据所述模式信息，向所述第二终端设备发送辅助信息，包括：
    确定所述模式信息指示所述第二终端设备处于网络设备调度模式和自主竞争模式，向所述第二终端设备发送所述辅助信息；或者，
    确定所述模式信息指示所述第二终端设备处于自主竞争模式，向所述第二终端设备发送所述辅助信息。
  5. 如权利要求1-4任一所述的方法，其特征在于，还包括：
    获取用于发送所述辅助信息的第一侧行链路传输资源；
    所述根据所述模式信息，向所述第二终端设备发送辅助信息，包括：
    根据所述模式信息，在所述第一侧行链路传输资源上向所述第二终端设备发送第一信息，所述第一信息携带所述辅助信息。
  6. 如权利要求5所述的方法，其特征在于，所述获取用于发送所述辅助信息的第一侧行链路传输资源，包括：
    在专用资源上向网络设备发送专用调度请求，所述专用调度请求用于请求分配用于发送所述第一信息的侧行链路传输资源；
    接收来自所述网络设备的所述第一侧行链路传输资源。
  7. 如权利要求6所述的方法，其特征在于，还包括：
    根据所述第一信息的格式，确定所述专用资源；
    其中，不同格式的第一信息对应的专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
  8. 如权利要求6所述的方法，其特征在于，还包括：
    根据所述第一信息的大小，确定所述专用资源；
    其中，不同大小的第一信息对应的专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
  9. 如权利要求6所述的方法，其特征在于，还包括：
    确定所述第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的所述第一信息。
  10. 如权利要求5所述的方法，其特征在于，所述获取用于发送所述辅助信息的第一侧行链路传输资源，包括：
    向网络设备发送缓冲区状态报告，所述缓冲区状态报告用于请求分配用于发送所述第一信息的侧行链路传输资源，所述缓冲区状态报告指示了待传输的辅助信息的大小；
    接收来自所述网络设备的所述第一侧行链路传输资源。
  11. 如权利要求10所述的方法，其特征在于，所述缓冲区状态报告携带专用目标索引，所述专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用目标索引与所述待传输的辅助信息的大小对应。
  12. 如权利要求10所述的方法，其特征在于，所述缓冲区状态报告携带专用逻辑信道组标识，所述专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用逻辑信道组标识与所述待传输的辅助信息的大小对应。
  13. 如权利要求10-12所述的方法，其特征在于，所述缓冲区状态报告是专用缓冲区状态报告。
  14. 如权利要求5-13任一所述的方法，其特征在于，所述第一信息包括以下任一种：
    侧行链路控制信息SCI、PC5-无线资源控制RRC信令、侧行链路媒体接入控制控制单元SL MAC CE。
  15. 如权利要求5-13任一所述的方法，其特征在于，所述第一信息是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，所述第一级SCI中的指示信息指示了所述第二级SCI携带的所述辅助信息的大小。
  16. 如权利要求1-15任一所述的方法，其特征在于，根据所述模式信息，向所述第二终端设备发送辅助信息之前，还包括：
    确定满足预设策略条件；
    其中，所述预设策略条件包括：所述第一终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
  17. 一种无线通信方法，用于第二终端设备，其特征在于，包括：
    接收来自第一终端设备的辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源；
    根据所述第二终端设备的模式信息，处理所述辅助信息，所述模式信息用于指示所述第二终端设备的资源调度方式。
  18. 如权利要求17所述的方法，其特征在于，所述根据所述第二终端设备的模式信息，处理所述辅助信息，包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式，根据所述辅助信息，确定用于传输所述第二终端设备的侧行链路数据的第一侧行链路传输资源。
  19. 如权利要求17所述的方法，其特征在于，所述根据所述第二终端设备的模式信息，处理所述辅助信息，包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，向网络设备发送所述辅助信息，所述辅助信息用于第一侧行链路传输资源的生成，所述第一侧行链路传输资源用于传输所述第二终端设备的侧行链路数据。
  20. 如权利要求18或19所述的方法，其特征在于，
    所述辅助信息指示的一套或多套侧行链路传输资源中包括优选使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选使用的侧行链路传输资源，所述第一侧 行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
  21. 如权利要求20所述的方法，其特征在于，所述第一侧行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
    基于侧行链路逻辑信道优先级机制选择的目标终端设备包括所述第一终端设备。
  22. 如权利要求18或19所述的方法，其特征在于，
    所述辅助信息指示的一套或多套侧行链路传输资源中包括优选不使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选不使用的侧行链路传输资源，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
  23. 如权利要求22所述的方法，其特征在于，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
    基于侧行链路逻辑信道优先级机制选择的目标终端设备不包括所述第一终端设备。
  24. 如权利要求17所述的方法，其特征在于，所述根据所述第二终端设备的模式信息，处理所述辅助信息，包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，则丢弃或忽视所述辅助信息。
  25. 如权利要求17-24任一所述的方法，其特征在于，还包括：
    向所述第一终端设备发送所述模式信息。
  26. 如权利要求25所述的方法，其特征在于，还包括：
    接收来自所述第一终端设备的第一请求，所述第一请求用于请求获取所述模式信息。
  27. 如权利要求17-24任一所述的方法，其特征在于，还包括：
    向所述第一终端设备发送第二请求，所述第二请求用于请求获取辅助信息。
  28. 如权利要求24-27任一所述的方法，其特征在于，还包括：
    确定满足预设策略条件；
    其中，所述预设策略条件包括：所述第二终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
  29. 一种通信装置，其特征在于，包括：
    处理单元和收发单元；
    所述处理单元，用于获取第二终端设备的模式信息，所述模式信息用于指示所述第二终端设备的资源调度方式；
    所述处理单元，用于根据所述模式信息，通过所述收发单元向所述第二终端设备发送辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源。
  30. 如权利要求29所述的装置，其特征在于，所述处理单元，用于获取第二终端设备的模式信息，具体包括：
    用于通过所述收发单元接收来自所述第二终端设备的所述模式信息。
  31. 如权利要求30所述的装置，其特征在于，所述收发单元，还用于向所述第二终端设备发送第一请求，所述第一请求用于请求获取所述模式信息。
  32. 如权利要求29-31任一所述的装置，其特征在于，所述处理单元，用于根据所述模式信息，通过所述收发单元向所述第二终端设备发送辅助信息，具体包括：
    用于当确定所述模式信息指示所述第二终端设备处于网络设备调度模式和自主竞争模式，通过所述收发单元向所述第二终端设备发送所述辅助信息；或者，
    用于当确定所述模式信息指示所述第二终端设备处于自主竞争模式，通过所述收发单元向所述第二终端设备发送所述辅助信息。
  33. 如权利要求29-32任一所述的装置，其特征在于，所述处理单元，还用于获取用于发送所述辅助信息的第一侧行链路传输资源；
    所述处理单元，用于根据所述模式信息，通过所述收发单元向所述第二终端设备发送辅助信息，具体包括：
    用于根据所述模式信息，通过所述收发单元在所述第一侧行链路传输资源上向所述第二终端设备发送第一信息，所述第一信息携带所述辅助信息。
  34. 如权利要求33所述的装置，其特征在于，所述处理单元，用于获取用于发送所述辅助信息的第一侧行链路传输资源，具体包括：
    用于通过所述收发单元在专用资源上向网络设备发送专用调度请求，所述专用调度请求用于请求分配用于发送所述第一信息的侧行链路传输资源；通过所述收发单元接收来自所述网络设备的所述第一侧行链路传输资源。
  35. 如权利要求34所述的装置，其特征在于，所述处理单元，还用于根据所述第一信息的格式，确定所述专用资源；其中，不同格式的第一信息对应的专用资源不同，不同格式的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
  36. 如权利要求34所述的装置，其特征在于，所述处理单元，还用于根据所述第一信息的大小，确定所述专用资源；其中，不同大小的第一信息对应的专用资源不同，不同大小的第一信息携带的辅助信息所指示的侧行链路传输资源的大小不同。
  37. 如权利要求34所述的装置，其特征在于，所述处理单元，还用于确定所述第一侧行链路传输资源的大小，小于待传输的辅助信息所需要的侧行链路传输资源的大小，则生成截断的所述第一信息。
  38. 如权利要求33所述的装置，其特征在于，所述处理单元，用于获取用于发送所述辅助信息的第一侧行链路传输资源，包括：
    用于通过所述收发单元向网络设备发送缓冲区状态报告，所述缓冲区状态报告用于请求分配用于发送所述第一信息的侧行链路传输资源，所述缓冲区状态报告指示了待传输的辅助信息的大小；通过所述收发单元接收来自所述网络设备的所述第一侧行链路传输资源。
  39. 如权利要求38所述的装置，其特征在于，所述缓冲区状态报告携带专用目标索引，所述专用目标索引用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用目标索引与所述待传输的辅助信息的大小对应。
  40. 如权利要求38所述的装置，其特征在于，所述缓冲区状态报告携带专用逻辑信道组标识，所述专用逻辑信道组标识用于请求分配用于发送辅助信息的侧行链路传输资源，所述专用逻辑信道组标识与所述待传输的辅助信息的大小对应。
  41. 如权利要求38-40所述的装置，其特征在于，所述缓冲区状态报告是专用缓冲区状态报告。
  42. 如权利要求33-41任一所述的装置，其特征在于，所述第一信息包括以下任一种：
    侧行链路控制信息SCI、PC5-无线资源控制RRC信令、侧行链路媒体接入控制控制单元SL MAC CE。
  43. 如权利要求33-41任一所述的装置，其特征在于，所述第一信息是两级SCI，所述两级SCI包含第一级SCI和第二级SCI，所述第一级SCI中的指示信息指示了所述第二级SCI携带的所述辅助信息的大小。
  44. 如权利要求29-43任一所述的装置，其特征在于，所述处理单元，还用于在根据所述模式信息，通过所述收发单元向所述第二终端设备发送辅助信息之前，确定满足预设策略条件；
    其中，所述预设策略条件包括：第一终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
  45. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一终端设备的辅助信息，所述辅助信息用于指示一套或多套侧行链路传输资源；
    处理单元，用于根据第二终端设备的模式信息，处理所述辅助信息，所述模式信息用于指示所述第二终端设备的资源调度方式。
  46. 如权利要求45所述的装置，其特征在于，所述处理单元，用于根据所述第二终端设备的模式信息，处理所述辅助信息，具体包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式，用于根据所述辅助信息，确定用于传输所述第二终端设备的侧行链路数据的第一侧行链路传输资源。
  47. 如权利要求45所述的装置，其特征在于，所述处理单元，用于根据所述第二终端设备的模式信息，处理所述辅助信息，具体包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，用于通过所述收发单元向网络设备发送所述辅助信息，所述辅助信息用于第一侧行链路传输资源的生成，所述第一侧行链路传输资源用于传输所述第二终端设备的侧行链路数据。
  48. 如权利要求46或47所述的装置，其特征在于，
    所述辅助信息指示的一套或多套侧行链路传输资源中包括优选使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选使用的侧行链路传输资源，所述第一侧行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
  49. 如权利要求48所述的装置，其特征在于，所述第一侧行链路传输资源优先用于或仅用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
    基于侧行链路逻辑信道优先级机制选择的目标终端设备包括所述第一终端设备。
  50. 如权利要求46或47所述的装置，其特征在于，
    所述辅助信息指示的一套或多套侧行链路传输资源中包括优选不使用的侧行链路传输资源，所述第一侧行链路传输资源对应于所述优选不使用的侧行链路传输资源，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据。
  51. 如权利要求50所述的装置，其特征在于，所述第一侧行链路传输资源不用于所述第二终端设备向所述第一终端设备发送侧行链路数据，包括：
    基于侧行链路逻辑信道优先级机制选择的目标终端设备不包括所述第一终端设备。
  52. 如权利要求45所述的装置，其特征在于，所述处理单元，用于根据所述第二终 端设备的模式信息，处理所述辅助信息，具体包括：
    所述模式信息用于指示所述第二终端设备处于自主竞争模式和网络设备调度模式，或处于网络设备调度模式，用于丢弃或忽视所述辅助信息。
  53. 如权利要求45-52任一所述的装置，其特征在于，所述收发单元，还用于向所述第一终端设备发送所述模式信息。
  54. 如权利要求53所述的装置，其特征在于，所述收发单元，还用于接收来自所述第一终端设备的第一请求，所述第一请求用于请求获取所述模式信息。
  55. 如权利要求45-52任一所述的装置，其特征在于，所述收发单元，还用于向所述第一终端设备发送第二请求，所述第二请求用于请求获取辅助信息。
  56. 如权利要求52-55任一所述的装置，其特征在于，所述处理单元，还用于确定满足预设策略条件；
    其中，所述预设策略条件包括：所述第二终端设备的信道忙碌率CBR、参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI、信号与干扰加噪声比SINR或电量中的一种或多种参数的值达到预设的阈值或范围。
  57. 一种通信装置，其特征在于，包括：
    处理器，所述存储器和处理器耦合，所述存储器用于存储程序指令，所述处理器用于执行所述程序指令，以实现权利要求1-28任一项所述的方法。
  58. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，实现上述权利要求1-28任一所述的方法。
  59. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，当所述指令在计算机上运行时，实现如权利要求1-28任一所述的方法。
  60. 一种通信系统，其特征在于，包括用于执行上述权利要求1-16任一所述方法的第一终端设备，和/或，用于执行上述权利要求17-28任一所述方法的第二终端设备。
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