WO2024012484A1 - 无线通信方法和通信装置 - Google Patents

无线通信方法和通信装置 Download PDF

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Publication number
WO2024012484A1
WO2024012484A1 PCT/CN2023/106966 CN2023106966W WO2024012484A1 WO 2024012484 A1 WO2024012484 A1 WO 2024012484A1 CN 2023106966 W CN2023106966 W CN 2023106966W WO 2024012484 A1 WO2024012484 A1 WO 2024012484A1
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Prior art keywords
cot
terminal
transmission block
resource
indication information
Prior art date
Application number
PCT/CN2023/106966
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English (en)
French (fr)
Inventor
焦瑞晟
何泓利
刘云
李雪茹
薛丽霞
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202210972447.XA external-priority patent/CN117460077A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024012484A1 publication Critical patent/WO2024012484A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access

Definitions

  • the present application relates to the field of communication, and in particular, to a wireless communication method and communication device.
  • terminal direct-connect communication can be extended to unlicensed spectrum with larger bandwidth, that is, sidelink-unlicensed (SL-U).
  • LBT channel listening
  • LBT listen-before-talk
  • type 1 LBT requires counter rollback, and the listening channel time is generally longer; type 2 LBT only needs to listen to the channel for a fixed time, and the listening time is generally short, so it is also called one-shot LBT.
  • the sidelink can support channel occupancy time sharing (COT sharing).
  • COT sharing channel occupancy time sharing
  • only the terminal with the initial COT that is, the first device to grab the channel
  • other terminals that can share the COT only need to perform type 2 LBT before sending.
  • type 2 LBT has a high probability of requiring shorter channel listening time than type 1 LBT, it can increase the probability of other terminals sharing the COT accessing the channel.
  • channel sharing is determined by the terminal of the initial COT. Specifically, once a terminal seizes the channel through type 1 LBT, the terminal will decide how to allocate time-frequency resources within the COT and notify terminals that can share the COT of the resources that can be shared.
  • this solution requires the initial COT terminal to know in advance which terminals' transmissions can share the COT it has preempted, and the initial COT terminal also needs to have the ability to allocate time-frequency resources. If the terminal of the initial COT cannot meet the above requirements, the terminal of the initial COT will not be able to share the COT. As a result, other terminals can only access the channel through type 1 LBT, resulting in a low probability of accessing the channel.
  • This application provides a wireless communication method and communication device, which can increase the probability of accessing a channel.
  • a wireless communication method is provided.
  • the method can be executed by a second terminal, or by a component of the second terminal (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all or Logic modules or software implementation of some second terminal functions.
  • the following description takes the method being executed by the second terminal as an example.
  • the method includes: the second terminal detects a first transmission block from the terminal that initiated the COT on the first resource in the COT, the first transmission block includes first indication information, and the first indication information indicates the terminal that initiated the COT; The second terminal sends the second transmission block through the shared COT or the COT associated with the COT according to the first indication information, and the receiving end of the second transmission block includes the terminal that initiated the COT.
  • the terminal that initially obtains the COT refers to the terminal that obtains the COT through the first type LBT access channel.
  • the first type of LBT can be type 1 LBT.
  • the second terminal sending the second transport block by sharing the COT or the COT associated with the COT means that the second terminal accesses the channel through the second type LBT and uses the resources in the COT or the COT associated with the COT to send the second transport block.
  • the second type of LBT can be type 2 LBT.
  • the COT associated COT refers to a COT that is several business cycles apart from the COT, and the channels corresponding to the two COTs are the same.
  • the sidelink control information (SCI) 1 or SCI2 in the first transport block includes first indication information.
  • the terminal of the initial COT carries indication information to instruct the terminal of the initial COT, This allows other terminals to determine whether their receiving end includes the initial COT based on the indication information. If the receiving end of other terminals includes the initial COT, there is an opportunity to share the COT, that is, there is an opportunity to access the channel through type 2 LBT, thereby increasing the probability of accessing the channel.
  • the second terminal sends the second transmission block by sharing the COT or the COT associated with the COT according to the first indication information, including: the second terminal determines the second transmission block according to the first indication information. Whether the receiving end includes the terminal that initiated the COT; if the receiving end of the second transport block includes the terminal that initiated the COT, the second terminal sends the second transport block by sharing the COT or the COT associated with the COT.
  • the first transmission block may also include information about resources that can be shared in the COT and/or a first channel access priority class (CAPC), where the first CAPC is the initial The CAPC used by the COT terminal when initializing the COT.
  • CAC channel access priority class
  • the method may further include: the second terminal responds to the information of the resources that can be shared in the COT and/or the first transport block.
  • the CAPC determines the second resource in the COT. Further, the second terminal may send the second transport block on the second resource in the COT by sharing the COT.
  • the method may further include: the second terminal determines the second transmission block according to the information of the resources that can be shared in the COT and/or the first CAPC. , determine the second resource in the COT associated with the COT. Further, the second terminal may send the second transport block on the second resource in the COT associated with the COT by sharing the COT associated with the COT.
  • the first CAPC indicates the CAPC priority of the service corresponding to the target transport block.
  • the terminal that initiates the COT initiates the COT in order to send the target transport block.
  • the maximum channel occupancy time (MCOT) corresponding to the COT can also be determined.
  • the MCOT corresponding to the COT can also be called the total duration of the COT.
  • the second terminal may determine whether the COT can be shared according to the first CAPC; if the priority indicated by the CAPC corresponding to the second transport block is greater than or equal to the priority indicated by the first CAPC, the second terminal may determine whether the COT can be shared. Share the COT.
  • the second terminal may determine the second resource in the COT or the second resource in the COT associated with the COT based on the first CAPC or information on resources that can be shared in the COT.
  • the second terminal determines the second resource in the COT or the second resource in the COT associated with the COT based on the information of the resources that can be shared in the COT and/or the first CAPC, including :
  • the physical layer of the second terminal reports one of the following to the medium access control (MAC) layer of the second terminal according to the information of the resources that can be shared in the COT and/or the first CAPC: the The resources that can be shared in the COT, the intersection of the resources that can be shared in the COT and the resource selection window, or the intersection of the resources that can be shared in the COT and the candidate resource set; the MAC layer of the second terminal reports according to the physical layer information to determine the second resource in the COT or the second resource in the COT associated with the COT.
  • MAC medium access control
  • the first transmission block may also include a first source identifier, and the first indication information indicates that the terminal corresponding to the first source identifier is the terminal that initiated the COT.
  • the second transmission block further includes a first destination identifier.
  • the method may also include: the second terminal receives at least one set of identifiers, each set of identifiers including at least A source identifier and at least one destination identifier, and identifiers belonging to the same group correspond to a terminal. Further, the second terminal may determine whether the receiving end of the second transmission block includes the terminal that initiated the COT based on the first indication information, the first source identifier, the first destination identifier, and the at least one set of identifiers.
  • the second terminal may determine whether the first source identifier and the first destination identifier belong to the same group of identifiers in the at least one group of identifiers. If the first source identifier and the first destination identifier belong to the same group of identifiers in the at least one group of identifiers, the second terminal may determine that the receiving end of the second transmission block includes the terminal that initiated the COT.
  • the second terminal may determine that the receiving end of the second transmission block does not include the terminal that initiated the COT.
  • the second terminal can determine the second terminal according to the identification information corresponding to the terminal obtained in advance, the first source identification and the first indication information in the first transmission block, and the first destination identification in the second transmission block. Whether the receiving end of the transport block includes the a terminal. In the case where the receiving end of the second transport block includes the first terminal, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the first indication information is a sidelink identifier of the terminal that initiates the COT.
  • the side link identifier of the terminal of the COT may be the source identifier or destination identifier of the unicast service of the terminal.
  • the second transmission block may also include a first destination identifier.
  • the method may also include: the second terminal receives at least one set of identifiers, each set of identifiers including one Side link identifier and at least one destination identifier. Identifiers belonging to the same group correspond to one terminal. Further, the second terminal may determine whether the receiving end of the second transmission block includes the terminal that initiated the COT based on the side link identifier, the first destination identifier, and the at least one set of identifiers of the terminal that initiated the COT.
  • the second terminal may determine whether the side link identifier of the terminal that initiated the COT and the first destination identifier belong to the same group of identifiers in the at least one group of identifiers. If the side link identifier of the terminal that initiated the COT and the first destination identifier belong to the same group of identifiers in the at least one group of identifiers, the second terminal may determine that the receiving end of the second transmission block includes the terminal that initiated the COT.
  • the second terminal can determine that the receiving end of the second transmission block does not include the terminal that initiated the COT.
  • the second terminal can determine whether the receiving end of the second transmission block is based on the identification information corresponding to the terminal obtained in advance, the side link identification of the terminal of the initial COT, and the first destination identification in the second transmission block. Including the first terminal. In the case where the receiving end of the second transport block includes the first terminal, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the second transmission block includes second indication information, and the second indication information indicates the terminal that initiated the COT.
  • the second transmission block further includes a first destination identifier, and the second indication information indicates that the terminal corresponding to the first destination identifier is the terminal that initiates the COT; or, the second indication information includes the terminal that initiates the COT.
  • the sidelink identifier of the terminal is the terminal that initiates the COT.
  • the second transport block also includes information about resources that can be shared in the COT and/or the CAPC corresponding to the first transport block.
  • a wireless communication method is provided.
  • the method can be executed by a third terminal, or by components of the third terminal (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all or Logic modules or software implementation of some third terminal functions.
  • the following description takes the method being executed by a third terminal as an example.
  • the method includes: the third terminal detects a second transmission block from the second terminal on the second resource in the COT, the second transmission block includes second indication information, and the second indication information indicates the terminal that initiated the COT; third The terminal sends the third transport block by sharing the COT or the COT associated with the COT according to the second indication information, and the receiving end of the third transport block includes the terminal that initiated the COT.
  • the terminal that initially obtains the COT refers to the terminal that obtains the COT through the first type LBT access channel.
  • the first type of LBT can be type 1 LBT.
  • the third terminal sending the third transmission block by sharing the COT or the COT associated with the COT means that the third terminal accesses the channel through the second type LBT and uses the resources in the COT or the COT associated with the COT to send the third transmission block. .
  • the second type of LBT can be type 2 LBT.
  • the COT associated COT refers to a COT that is several business cycles apart from the COT, and the channels corresponding to the two COTs are the same.
  • SCI 1 or SCI 2 in the second transmission block includes second indication information.
  • the third terminal when the third terminal does not detect the transmission block of the terminal of the initial COT, it can determine the third terminal to be transmitted based on the transmission blocks sent by other terminals that have a transceiver relationship with the terminal of the initial COT. Whether the receiving end of the three transport blocks includes the terminal of the initial COT. In the case where the receiving end of the third transport block includes the terminal of the initial COT, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the third terminal sends the third transmission block by sharing the COT or the COT associated with the COT according to the second indication information, including: the third terminal determines the third transmission block according to the second indication information. Whether the receiving end includes the terminal that initiated the COT; in the case that the receiving end of the third transport block includes the terminal that initiated the COT, the third terminal sends the third transport block by sharing the COT or the COT associated with the COT.
  • the second transmission block includes information about resources that can be shared in the COT and/or the first CAPC.
  • the first CAPC is the CAPC adopted by the terminal that initiated the COT when initiating the COT.
  • the method may further include: the third terminal responds to the information of the resources that can be shared in the COT and/or the first transport block.
  • the CAPC determines the third resource in the COT. Further, the third terminal sends the third transport block on the third resource in the COT by sharing the COT.
  • the method may further include: the third terminal transmits the third transmission block according to the information of the resources that can be shared in the COT and/or the first transmission block.
  • the CAPC corresponding to the block determines the third resource in the COT associated with the COT.
  • the third terminal sends the third transport block by sharing the COT associated with the COT on the third resource in the COT associated with the COT.
  • the first CAPC indicates the CAPC priority of the service corresponding to the target transport block.
  • the terminal that initiates the COT initiates the COT in order to send the target transport block.
  • the maximum channel occupancy time MCOT corresponding to the COT can also be determined.
  • the MCOT corresponding to the COT can also be called the total duration of the COT.
  • the third terminal may determine whether the COT can be shared according to the first CAPC; when the priority indicated by the CAPC corresponding to the third transport block is greater than or equal to the priority indicated by the first CAPC, the third terminal may determine whether the COT can be shared. Share the COT.
  • the third terminal may determine the third resource in the COT or the third resource in the COT associated with the COT based on the first CAPC or the information on the resources that can be shared in the COT.
  • the third terminal determines the third resource in the COT or the third resource in the COT associated with the COT based on the information of the resources that can be shared in the COT and/or the first CAPC, including :
  • the physical layer of the third terminal reports one of the following to the MAC layer of the third terminal according to the information of the resources that can be shared in the COT and/or the first CAPC: the resources that can be shared in the COT, the The intersection of the resources that can be shared in the COT and the resource selection window, or the intersection of the resources that can be shared in the COT and the candidate resource set; the MAC layer of the third terminal determines the third party in the COT based on the information reported by the physical layer resource or the third resource in the COT associated with this COT.
  • the second transmission block may also include a first destination identifier, and the second indication information indicates that the terminal corresponding to the first destination identifier is the terminal that initiates the COT.
  • the third transmission block includes a second destination identifier.
  • the method may further include: the third terminal receives at least one set of identifiers, each set of identifiers including at least one source ID and at least one destination ID. IDs belonging to the same group correspond to one terminal. Further, the third terminal may determine whether the receiving end of the third transmission block includes the terminal that initiated the COT based on the second indication information, the first destination identifier, the second destination identifier, and the at least one group of identifiers.
  • the second terminal may determine whether the first destination identifier and the second destination identifier belong to the same group of identifiers in the at least one group of identifiers. If the first destination identifier and the second destination identifier belong to the same group of identifiers in the at least one group of identifiers, the third terminal may determine that the receiving end of the third transmission block includes the terminal that initiated the COT.
  • the third terminal may determine that the receiving end of the third transmission block does not include the terminal that initiated the COT.
  • the third terminal can determine the third terminal based on the identification information corresponding to the terminal obtained in advance, the first destination identification and the second indication information in the second transmission block, and the second destination identification in the third transmission block. Whether the receiving end of the transport block includes the terminal that initiated the COT. In the case where the receiving end of the third transport block includes the terminal that initiated the COT, the third terminal has the opportunity to share the COT, which is beneficial to increasing the probability of accessing the channel.
  • the second indication information is the sidelink identifier of the terminal that initiated the COT.
  • the third transmission block further includes a second destination identifier.
  • the method may further include: the third terminal receives at least one set of identifiers, each set of identifiers including a sideline The link identifier and at least one destination identifier. Identifiers belonging to the same group correspond to one terminal. Further, the third terminal determines whether the receiving end of the third transmission block includes the terminal that initiated the COT based on the side link identifier, the second destination identifier, and the at least one set of identifiers of the terminal that initiated the COT.
  • the third terminal may determine whether the side link identifier and the second destination identifier of the terminal that initiated the COT belong to the same group of identifiers in the at least one group of identifiers. If the side link identifier and the second destination identifier of the terminal that initiated the COT belong to the same group of identifiers in the at least one group of identifiers, the third terminal may determine that the receiving end of the third transmission block includes the terminal that initiated the COT.
  • the third terminal can determine that the receiving end of the third transmission block does not include the terminal that initiated the COT.
  • the third terminal can determine whether the receiving end of the second transmission block is based on the identification information corresponding to the terminal obtained in advance, the side link identification of the terminal of the initial COT, and the second destination identification in the third transmission block. Includes the terminal that originated the COT.
  • the third terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the third transmission block may also include third indication information, and the third indication information indicates the terminal that initiated the COT.
  • the third transmission block further includes a second destination identifier, and the third indication information indicates that the terminal corresponding to the second destination identifier is the terminal that initiates the COT; or, the third indication information includes the terminal that initiates the COT.
  • Line link identifier indicates that the terminal corresponding to the second destination identifier is the terminal that initiates the COT; or, the third indication information includes the terminal that initiates the COT.
  • the third transport block also includes information about resources that can be shared in the COT and/or the CAPC corresponding to the first transport block, and the first transport block comes from the terminal that originated the COT.
  • a wireless communication method is provided.
  • the method can be executed by the first terminal, or by components of the first terminal (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all or Logic modules or software implementation of part of the first terminal functions.
  • the following description takes the method being executed by the second terminal as an example.
  • the method includes: a first terminal determines a channel occupancy time COT for sidelink transmission; the first terminal uses a first resource in the COT to send a first transmission block, where the first transmission block includes first indication information, and An indication information indicates the terminal that initiates the COT, and the first terminal is the terminal that initiates the COT.
  • determining the COT used for sidelink transmission by the first terminal means that the first terminal obtains the COT through the first type LBT access channel.
  • the first type of LBT can be type 1 LBT.
  • the first terminal obtaining the COT through the first type LBT access channel may also be called the first terminal initiating the COT, and the first terminal is the terminal that initializes the COT.
  • the receiving end of the first transmission block may or may not include the second terminal.
  • SCI 1 or SCI 2 in the first transmission block includes first indication information.
  • the terminal of the initial COT carries indication information to indicate the terminal of the initial COT, so that other terminals can determine whether their receiving end includes the initial COT based on the indication information. If the receiving end of other terminals includes the initial COT, there is a chance to share the COT, that is, there is a chance to access the channel through type 2 LBT, thereby increasing the probability of accessing the channel.
  • the first transmission block also includes a first source identifier corresponding to the first terminal, and the first indication information indicates that the terminal corresponding to the first source identifier is the terminal that initiated the COT; and, using the first terminal Before the first resource in the COT sends the first transport block, the method may further include: the first terminal sends the at least one group of identifiers corresponding to the first terminal to at least one associated terminal, each group of identifiers including at least one source identifier and at least A destination identifier, the at least one set of identifiers includes the first source identifier, and the at least one associated terminal is a terminal that has a transceiver relationship with the first terminal.
  • the at least one associated terminal can determine whether its receiving end includes the first terminal based on the at least one set of identifiers sent by the first terminal.
  • the first indication information is the sidelink identifier of the terminal that initiated the COT; and, before the first terminal uses the first resource in the COT to send the first transport block, the method It may also include: the first terminal sending a side link identifier of the first terminal and at least one destination identifier corresponding to the first terminal to at least one associated terminal.
  • the connected terminal is a terminal that has a transceiver relationship with the first terminal.
  • the at least one associated terminal can determine whether its receiving end includes the first terminal based on the side link identifier of the first terminal sent by the first terminal and at least one destination identifier corresponding to the first terminal.
  • the first transmission block also includes information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the CAPC adopted by the first terminal when initializing the COT.
  • a wireless communication method is provided.
  • the method can be executed by the first terminal, or by components of the first terminal (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all or Logic modules or software implementation of part of the first terminal functions.
  • the following description takes the method being executed by the first terminal as an example.
  • the method includes: a first terminal determines a channel occupancy time COT for sidelink transmission; the first terminal uses a first resource in the COT to send a first transmission block, where the first transmission block includes first indication information, and An indication information indicates whether the terminal that initiated the COT authorizes other terminals to share the COT.
  • determining the COT used for sidelink transmission by the first terminal means that the first terminal obtains the COT through the first type LBT access channel.
  • the first type of LBT can be type 1 LBT.
  • the first terminal obtaining the COT through the first type LBT access channel may also be called the first terminal initiating the COT, and the first terminal is the terminal that initializes the COT.
  • SCI 1 or SCI 2 in the first transmission block includes first indication information.
  • the first terminal indicates whether the COT is authorized to be shared by carrying indication information in the transmission block, so that other terminals can determine whether the COT is authorized to be shared based on the indication information. If the COT is authorized to be shared, other terminals Terminals have the opportunity to share the COT, which helps improve the probability of accessing the channel.
  • the first transmission block also includes information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the CAPC adopted by the first terminal when initializing the COT.
  • the first CAPC indicates the CAPC priority of the service corresponding to the target transport block.
  • the terminal that initiates the COT initiates the COT in order to send the target transport block.
  • the maximum channel occupancy time MCOT corresponding to the COT can also be determined.
  • the MCOT corresponding to the COT can also be called the total duration of the COT.
  • the sender of the transport block determines that the COT can be shared.
  • the information about the first CAPC or the resources that can be shared in the COT is also used by other terminals to determine the resources that can be shared in the COT.
  • a wireless communication method is provided.
  • the method can be executed by a second terminal, or by a component of the second terminal (such as a processor, a chip, or a chip system, etc.), or by a device that can realize all or Logic modules or software implementation of some second terminal functions.
  • the following description takes the method being executed by the second terminal as an example.
  • the method includes: the second terminal detects a first transmission block from the terminal that initiated the COT on the first resource in the COT, the first transmission block includes first indication information, and the first indication information indicates whether the terminal that initiated the COT Authorize other terminals to share the COT; the second terminal sends the second transmission block by sharing the COT or the COT associated with the COT according to the first indication information.
  • the terminal that initially obtains the COT refers to the terminal that obtains the COT through the first type LBT access channel.
  • the first type of LBT can be type 1 LBT.
  • the second terminal sending the second transport block by sharing the COT or the COT associated with the COT means that the second terminal accesses the channel through the second type LBT and uses the resources in the COT or the COT associated with the COT to send the second transport block.
  • the second type of LBT can be type 2 LBT.
  • the COT associated COT refers to a COT that is several business cycles apart from the COT, and the channels corresponding to the two COTs are the same.
  • the sidelink control information (SCI) 1 or SCI2 in the first transport block includes first indication information.
  • the first terminal indicates whether the COT is authorized to be shared by carrying indication information in the transmission block, so that other terminals can determine whether the COT is authorized to be shared based on the indication information. If the COT is authorized to be shared, other terminals Terminals have the opportunity to share the COT, which helps improve the probability of accessing the channel.
  • the first transmission block also includes information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the CAPC adopted by the terminal that initializes the COT when initializing the COT.
  • the second terminal sends the second transmission by sharing the COT or the COT associated with the COT.
  • the method may further include: the second terminal determines the second resource in the COT or the second resource in the COT associated with the COT based on the information of the resources that can be shared in the COT and/or the first CAPC; Wherein, the second terminal sends the second transport block by sharing the COT or the COT associated with the COT, including: the second terminal sends the second transport block by sharing the COT on the second resource in the COT. Alternatively, the second terminal sends the second transport block on the second resource in the COT associated with the COT by sharing the COT associated with the COT.
  • the second terminal determines the second resource in the COT or the second resource in the COT associated with the COT based on the information of the resources that can be shared in the COT and/or the first CAPC, including :
  • the physical layer of the second terminal reports the resource indication information to the medium access control (MAC) layer of the second terminal based on the information of the resources that can be shared in the COT and/or the first CAPC.
  • the resource indication information Indicate the resources that can be shared in the COT, the intersection of the resources that can be shared in the COT and the resource selection window, or the intersection of the resources that can be shared in the COT and the candidate resource set; the MAC layer of the second terminal is based on the resource indication. information to determine the second resource in the COT or the second resource in the COT associated with the COT.
  • a communication device including a module or unit for executing a method in any of the above aspects or any possible implementation of any of the above aspects.
  • a communication device including a processor.
  • the processor is coupled to a memory.
  • the memory is used to store computer programs or instructions.
  • the processor is used to execute the computer programs or instructions stored in the memory to implement any of the above aspects or the above. Methods in any possible implementation of any aspect.
  • the device further includes a memory coupled to the processor.
  • processors there are one or more processors, and/or one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the device is a terminal.
  • the communication interface may be a transceiver, or an input/output interface.
  • the device is a chip of the terminal.
  • the communication interface may be an input/output interface.
  • a processor including: an input circuit, an output circuit and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method in any of the above aspects or any possible implementation of any aspect.
  • the above-mentioned processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, the receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output A circuit may be the same circuit that functions as an input circuit and an output circuit at different times.
  • This application does not limit the specific implementation methods of the processor and various circuits.
  • a communication system including one or more of the aforementioned first terminal, second terminal and third terminal.
  • a computer program product includes: a computer program (which can also be called a code, or an instruction).
  • a computer program which can also be called a code, or an instruction.
  • the computer program When the computer program is run, it causes the computer to execute any of the above aspects or aspects. method in any of the possible implementations.
  • a computer-readable storage medium stores a computer program (which can also be called a code, or an instruction).
  • a computer program which can also be called a code, or an instruction.
  • the computer program When the computer program is run on a computer, it causes the computer to perform any of the above tasks.
  • a method in any possible implementation of one aspect or any aspect.
  • a chip including a processor for calling and running a computer program from a memory, so that a communication device installed with the chip executes any of the above aspects or any of the possible implementations of any of the aspects. method within the method.
  • Figure 1 is a schematic diagram of an example communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic flow chart of a wireless communication method provided by this application.
  • FIG. 3 is a schematic diagram of resource selection provided by this application.
  • Figure 4 is a schematic flow chart of a wireless communication method provided by this application.
  • Figure 5 is a schematic flow chart of a wireless communication method provided by this application.
  • Figure 6 is a schematic flow chart of a wireless communication method provided by this application.
  • Figure 7 is a schematic flow chart of a wireless communication method provided by this application.
  • Figure 8 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Figure 9 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of an example terminal provided by an embodiment of the present application.
  • A/B can mean A or B; “and/or” in this application only means It is an association relationship that describes related objects. It means that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B Can be singular or plural.
  • plural means two or more than two unless otherwise specified. “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the number and execution order, and words such as “first” and “second” do not limit the number and execution order.
  • LTE long term evolution
  • 5G fifth generation
  • NR new radio
  • the technical solutions of the embodiments of this application can be applied to direct communication between terminals (device to device, D2D).
  • terminals device to device, D2D
  • vehicle to vehicle communication vehicle to vehicle, V2V
  • vehicle to pedestrian communication vehicle to pedestrian, V2P
  • vehicle to network vehicle to network, V2N
  • vehicle to infrastructure vehicle to infrastructure, V2I
  • Another example is indoor commercial scenarios, such as communication between mobile phones and smart screens, communication between mobile phones and VR glasses, etc.
  • the terminal in the embodiment of this application may refer to (user equipment, UE), station, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communications equipment, user agent or user device.
  • the terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), or a device with wireless communication capabilities Handheld devices, computing devices or other processing devices connected to wireless modems, large screens, vehicle-mounted devices, wearable devices, terminals in 5G networks or future evolved public land mobile communications networks (PLMN) Terminal, etc., the embodiments of this application are not limited to this.
  • the types of multiple terminals involved in the embodiments of this application may be the same or different.
  • the multiple terminals may all be mobile phones, or one may be a mobile phone and the other may be a laptop computer.
  • the terminal includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also called main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system or windows operating system, etc.
  • This application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the program recorded in the code of the method provided by the embodiments of the present application can be provided according to the embodiments of the present application.
  • the execution subject of the method provided by the embodiment of the present application can be a terminal or a network device, or a functional module in the terminal or network device that can call a program and execute the program.
  • various aspects or features of the present application may be implemented as methods, apparatus, or articles of manufacture using standard programming and/or engineering techniques.
  • article of manufacture as used in this application encompasses a computer program accessible from any computer-readable device, carrier or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, tapes, etc.), optical disks (eg, compact discs (CD), digital versatile discs (DVD)) etc.), smart cards and flash memory software (e.g., erasable programmable read-only memory (EPROM), card, stick or key drive, etc.).
  • EPROM erasable programmable read-only memory
  • the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • FIG. 1 shows a schematic block diagram of a communication system suitable for this application.
  • the system 100 includes two communication interfaces, namely PC5 interface and Uu interface.
  • the PC5 interface is a direct communication interface between two terminals (such as terminal 110 and terminal 120 shown in the figure, or terminal 110 and terminal 130).
  • the direct communication link between terminals is also defined as a side link. Road or side chain (sidelink, SL).
  • the Uu interface is an interface for communication between a terminal (eg, terminal 110 or terminal 120) and the network device 140.
  • the communication system shown in Figure 1 may also include more network nodes, such as more terminals or network devices, and the embodiments of the present application will not be shown one by one in the figure.
  • the terminal 110 can monitor the channel through the first type of LBT (for example, type 1 LBT) before transmitting. If the channel is confirmed to be idle, the terminal 110 will obtain the right to use the channel within a period of time, which can be called channel occupancy time (COT). At this time, terminal 110 is called the terminal that initiates the COT.
  • first type of LBT for example, type 1 LBT
  • the terminal of the initial COT (ie, terminal 110) can send or receive data on that COT.
  • the terminal 110 can share the COT with the terminal 120 and/or the terminal 130 for use: (1)
  • the terminal 110 can learn that the terminal 120 and/or the terminal 130 can share the COT that it has preempted. For example, in some scenarios, if the receiving end of the transmission of terminal 120 and/or terminal 130 includes terminal 110, terminal 120 and/or terminal 130 can share the COT preempted by terminal 110; (2) Terminal 110 has time-frequency resources The ability to perform allocation, that is, the terminal needs to specify which resources are used by which terminal.
  • the terminal 110 In the SL system, it is difficult for the terminal 110 to have global information and the ability to schedule time-frequency resources, so it is difficult to meet the above requirements. If the above requirements cannot be met, the terminal 110 will not be able to share the COT with the terminal 120 and/or the terminal 130. Therefore, the terminal 120 and/or the terminal 130 can only access the channel through type 1 LBT, but cannot access the channel through the first type LBT (for example, type 2 LBT), resulting in a low probability of accessing the channel.
  • type 1 LBT for example, type 2 LBT
  • the duration of channel sensing through the first type of LBT is generally longer than the duration of channel sensing through the second type of LBT.
  • the first type of LBT is type 1 LBT and the second type of LBT is type 2 LBT as an example.
  • this application provides a wireless communication method.
  • the terminal with the initial COT allows other terminals to share the COT, and other terminals decide on their own whether to share the COT.
  • the initial COT terminal indicates the terminal of the initial COT in the transmission block, and other terminals can detect the transmission block and determine the terminal of the initial COT according to the indication of the transmission block. If the receiving end of other terminals includes the terminal of the initial COT, the COT can be shared, or the COT can be shared when certain conditions are met. Then, other terminals will be able to access the channel through type 2LBT, thereby increasing the probability of accessing the channel.
  • type 1 LBT and type 2 LBT may be named differently in different protocols, different versions or different systems, and type 1 LBT and type 2 LBT in this application can be replaced by other names with the same meaning.
  • the first terminal is the initial COT terminal
  • the receiving ends of the second terminal and the third terminal include the first terminal, that is, the second terminal and the third terminal have Sending and receiving relationship.
  • the first terminal is the initial COT terminal
  • the receiving end of the second terminal may or may not include the first terminal.
  • the first terminal may be the terminal 110 in Figure 1
  • the second terminal and the third terminal may be the terminal 120 and the terminal 130 in Figure 1 respectively.
  • the schematic flow chart provided in this application mainly uses different terminals as the execution subjects of the interactive gestures as examples to illustrate the method, but this application does not limit the execution subjects of the interactive gestures.
  • the terminal in the schematic flow chart (such as the first terminal, the second terminal or the third terminal) may also be a chip, chip system, or processor that supports the terminal to implement the method, or may be capable of implementing all or Logic modules or software for some terminal functions.
  • Figure 2 is a schematic flow chart of a wireless communication method provided by this application.
  • the method 200 may include S210 to S240.
  • S210 The first terminal determines the COT used for sidelink transmission.
  • the first terminal can monitor the channel through type 1 LBT. If it is confirmed that the channel is idle, it can obtain the right to use the channel within a period of time, and the COT can be determined.
  • the channel for which the first terminal obtains the right to use is recorded as: target channel.
  • the first terminal obtains the COT through type 1 LBT access (or preemption) channel, which can also be called the first terminal initializing the COT, and the first terminal is the terminal that initializes the COT.
  • type 1 LBT access (or preemption) channel which can also be called the first terminal initializing the COT
  • the first terminal is the terminal that initializes the COT.
  • S220 The first terminal uses the first resource in the COT to send the first transport block.
  • the second terminal may detect the first transport block on the first resource in the COT.
  • the second terminal may be the receiving end of the first transmission block or one of the receiving ends, or may not be the receiving end of the first transmission block.
  • the first resource may include one or more time slots or one or more symbols after the second terminal obtains the right to use the target channel.
  • the first transport block may or may not be a target transport block.
  • the purpose of the first terminal initializing the COT is to send the target transport block.
  • the first transmission block may include first indication information, and the first indication information is used to indicate the terminal of the initial COT, that is, according to the first indication information, the terminal of the initial COT may be determined.
  • the first transport block may include a physical sidelink shared channel (physical sidelinkshare channel, PSSCH) and a physical sidelink control channel (physical sidelink control channel, PSCCH).
  • PSCCH includes the first part of sidelink control information (SCI), which is SCI 1
  • PSSCH includes the second part of sidelink control information (SCI), which is SCI 2.
  • the first indication information may be included in the PSCCH.
  • the first indication information may be included in SCI 1.
  • the first indication information may be included in the PSSCH.
  • the first indication information may be included in SCI2, or the first indication information may be included in a medium access control element (MAC CE) of PSSCH.
  • MAC CE medium access control element
  • first indication information may also be included in other parts of the PSCCH or PSSCH, and this application does not limit the channel or information carrying the first indication information.
  • the first resource, the second resource and the third resource involved in the embodiments provided by this application are all time-frequency resources, that is, the frequency resources corresponding to the first resource, the second resource and the third resource belong to the target channel, the time domain resource corresponding to the first resource belongs to the COT, the time domain resource corresponding to the second resource or the third resource belongs to the COT or belongs to the COT associated with the COT, and the first resource, the second resource and the third resource Corresponding time-frequency resources do not overlap.
  • the second terminal determines whether the receiving end of the second transport block includes the first terminal according to the first indication information in the first transport block.
  • S240 The second terminal sends the second transmission block by sharing the COT or the COT associated with the COT.
  • shared COT refers to accessing the target channel through type 2LBT.
  • the second terminal may send the second transport block by sharing the COT or a COT associated with the COT.
  • the second terminal may send the second transport block by sharing the COT.
  • the receiving end of the second transport block includes the first terminal, and the second terminal meets other conditions for sharing the COT, such as the CAPC corresponding to the second transport block meets the requirements, then the second terminal can share the COT by sharing the COT.
  • the COT associated with the COT sends the second transport block.
  • the COT associated with the COT in the embodiments of this application refers to a COT that has a periodic relationship with the COT, that is, the COT and the COT associated with the COT are one or more business cycles apart.
  • the services within the COT have the same cycle.
  • the first transport block may also include information about the first CAPC and/or resources that can be shared in the COT.
  • the first CAPC represents the CAPC used by the first terminal when initializing the COT, that is, the first CAPC is the CAPC priority of the service corresponding to the target transport block.
  • the first CAPC is a numerical value. The larger the numerical value, the lower the priority. If it is stipulated or required that the corresponding transport block with a lower CAPC priority cannot share the COT initialized by the sender of the corresponding transport block with a higher CAPC priority, then if the CAPC priority corresponding to the second transport block is higher than the first CAPC priority High, or the CAPC priority corresponding to the second transmission block is the same as the first CAPC priority, then the second terminal can share the COT. Otherwise, the second terminal cannot share the COT.
  • the first CAPC can also be used to determine the maximum channel occupancy corresponding to the COT.
  • Maximum channel occupancy time for example, it can be 3ms, 4ms, 8ms or 10ms. That is to say, according to the first CAPC, the total duration of the COT can be known, and the total duration is the MCOT. It should be understood that the total duration of the COT can be expressed in absolute time units, such as milliseconds, or in the number of time slots, or in other information that can determine the total duration of the COT, such as the number of symbols.
  • the information on resources that can be shared in the COT may indicate time domain resources, or frequency domain resources, or time domain resources and frequency domain resources that can be shared in the COT.
  • the information about resources that can be shared in the COT may include the total duration of the COT. Then, in addition to the time occupied by the first transmission block (ie, time domain resources), other times within the COT and frequency domain resources corresponding to the time can be shared.
  • the information about resources that can be shared in the COT may include part of the duration that can be shared or part of the duration that cannot be shared in the COT.
  • the information about the resources that can be shared in the COT includes the starting position and the ending position of the time domain resources that can be shared, or the starting position and the ending position of the time domain resources that can be shared. duration.
  • the information about the resources that can be shared in the COT may include the bandwidth of the target channel, then all the frequency bands corresponding to the target channel can be shared.
  • the information about the resources that can be shared in the COT may include information about the frequency domain resources that can be shared or the frequency domain resources that cannot be shared in the target channel.
  • the information about the frequency domain resources that can be shared includes the starting position and the ending position of the frequency domain resources that can be shared, or the starting position and the bandwidth of the frequency domain resources that can be shared. .
  • the second terminal can determine which resources in the COT can be shared or which resources cannot be shared.
  • the first transport block may only include the first CAPC and not include information about resources that can be shared in the COT.
  • the second terminal can determine that in the time domain, except for the time occupied by the first transport block (ie, time domain resources), other times in the COT can be shared, and that the entire COT can be shared in the frequency domain. target channel.
  • the first transport block may only include information about resources that can be shared in the COT without including the first CAPC. This solution can be applied in scenarios where there is no restriction on the CAPC priorities of services that can share the COT.
  • the first transport block may include both the first CAPC and information of resources that can be shared in the COT.
  • This solution can be applied to limit the CAPC priority of the services that can share the COT, and other terminals can only share part of the remaining time of the COT and/or other terminals can only share part of the frequency domain resources in the target channel. scenario. It should be understood that the remaining time of the COT is the other time in the COT except the time occupied by the first transport block.
  • the second terminal can determine whether the COT can be shared based on the first CAPC in the first transmission block.
  • the second terminal may determine the resources that can be shared in the COT based on the first CAPC in the first transport block or the information on the resources that can be shared in the COT.
  • the resources include time domain resources and frequency domain resources. , that is, video resources.
  • the second terminal may determine the second resource in the COT based on the first CAPC in the first transport block or information on resources that can be shared in the COT, and determine the second resource in the COT.
  • the second transport block is sent by sharing the COT. For example, this solution can be applied to scenarios where both the resource awareness window and the resource selection window include part of the COT.
  • the physical layer of the second terminal may first determine the resources that can be shared in the COT based on the first CAPC or the information of the resources that can be shared in the COT, for example, recorded as: resource #A. Then, the second terminal determines the resources in resource #A that belong to the candidate resource set within the resource selection window, for example, recorded as: resource #B.
  • the candidate resource set is a resource set obtained by the second terminal after excluding resources within the resource selection window according to the existing protocol and used for reporting to the higher layer.
  • the second terminal reports resource #B to the MAC layer, for example, reports the resource identifier (eg, TRIV/FRIV) corresponding to resource #B.
  • the physical layer of the second terminal can determine the resource belonging to resource #A in the resource selection window based on resource #A, for example, recorded as: resource #C; then the physical layer reports resource #C to the MAC layer, such as reporting resource #C. The MAC layer then determines the resource that belongs to the candidate resource set within the resource selection window and belongs to resource #C, that is, resource #B.
  • the physical layer of the second terminal may report resource #A to the MAC layer, and the MAC layer determines resource #B by combining resource #A and the candidate resource set within the resource selection window.
  • the second terminal can select the second resource from resource #B to transmit the second transport block.
  • the weight of resource selection can be (pre)configured as a function of whether COT can be shared. For resources that have low reference signal receiving power (RSRP) and can share COT, select The selection weight will be higher. Then, the second terminal will tend to select resources with a smaller RSRP and a COT that can be shared. Resources with smaller RSRP have less interference and better transmission performance.
  • RSRP reference signal receiving power
  • the resources #A, #B, and #C can all be resource sets, including at least one time-frequency resource.
  • the resource selection diagram shown in (a) in Figure 3 For example, see the resource selection diagram shown in (a) in Figure 3 .
  • the total duration of the COT obtained by the first terminal on channel #1 (i.e., the target channel) through type 1 LBT is 8ms, that is, the COT includes time slots 0-7, and the first terminal is in time slot 0 Send the first transmission block on.
  • the resources belonging to the COT in the resource awareness window are time slots 0-2
  • the resources belonging to the COT in the resource selection window are time slots 6-7.
  • the candidate resource set in the resource selection window includes channel #1 in the frequency domain. and channel #2, including time slots 6-7 in the time domain. Then, if resource #A is a time-frequency resource composed of time slots 1-7 and channel #1, then resource #B is a time-frequency resource composed of time slots 6-7 and channel #1, resource #C and resource # B is the same.
  • the second terminal may determine the second resource in the COT associated with the COT based on the first CAPC in the first transport block or information on resources that can be shared in the COT, and associate the COT with the second resource in the COT.
  • the second transport block is sent on the second resource in the COT by sharing the COT.
  • Determining the second resource in the COT associated with the COT is similar to determining the second resource in the COT. Reference may be made to the corresponding description of determining the second resource in the COT above.
  • the second terminal may first determine the resources that can be shared in the COT associated with the COT based on the first CAPC or the information on the resources that can be shared in the COT, for example, recorded as: resource #A. Then, the second terminal determines the resources in resource #A that belong to the candidate resource set within the resource selection window, for example, recorded as: resource #B. After determining resource #B, the second terminal, such as the MAC layer of the second terminal, can select the second resource from resource #B.
  • the second terminal before sending the second transport block, can also detect the transport block on the target channel in a time slot before the starting time of the time domain resource corresponding to the second resource, or, The second terminal may detect the transport block on the target channel in the first time slot of the COT associated with the COT. If it is determined based on the detected transmission block that the second terminal can access the channel through type 2 LBT, it accesses the channel through type 2 LBT and uses the second resource to transmit the second transmission block.
  • the second terminal can access the channel through type 2 LBT. If it is determined based on the transmission block that the second terminal cannot access the channel through type 2 LBT, for example, the receiving end of the second transmission block does not include the terminal of the COT initially associated with the COT, then the second terminal cannot access the channel through type 2 LBT (That is, COT cannot be shared) and the channel can only be accessed with type 1 LBT.
  • COT#2 is the COT associated with COT#1, and there are several service cycles between COT#1 and COT#2.
  • the total duration of COT#1 obtained by the first terminal on channel #1 (ie, the target channel) through type 1 LBT is 2ms, that is, the COT#1 includes time slot 2 and time slot 3 of a certain subframe.
  • COT#2 is time slot 3 and time slot 4 of another subframe.
  • resource #A is a time-frequency resource consisting of channel #1 and time slot #3 in the resource awareness window
  • the candidate resource set includes time slot 3 and time slot 4 in the resource selection window in the time domain, and includes in the frequency domain Channel #1
  • resource #B is the time-frequency resource composed of time slot 4 and channel #1 in the resource selection window. If the second terminal determines that the second transmission resource can be used based on the transmission block detected on time slot #3 in the resource selection window, then the second terminal can perform type 2LBT on resource #B. If the LBT is successful, the second terminal The second transport block may be transmitted using slot 4 in the resource selection window.
  • this application only takes one time slot as 1 ms as an example for explanation, and the duration of the time slot is specifically determined based on the subcarrier spacing.
  • the second transport block may include information about resources that can be shared in the COT and/or the first CAPC.
  • the information about the resources that can be shared in the COT carried by the second transport block may be different from the information about the resources that can be shared in the COT carried by the first transport block. For example, if the information on the resources that can be shared in the COT indicates the remaining duration of the COT in addition to the current timeslot, then the information on the resources that can be shared in the COT carried in the second transport block indicates the remaining duration of the COT. Including the duration of the COT that the second terminal has used.
  • the second transport block carries The information about the resources that can be shared in the COT indicates that the duration of the remaining COT is 4 time slots.
  • the terminal of the initial COT indicates the terminal of the initial COT by carrying indication information in the transmission block, so that other terminals can determine whether their receiving end includes the initial COT based on the indication information. If the receiving end of other terminals includes the initial COT, there is an opportunity to share the COT, that is, there is an opportunity to access the channel through type 2 LBT, thereby increasing the probability of accessing the channel.
  • Figure 4 is a schematic flow chart of a wireless communication method provided by this application.
  • the method 400 may include S410 to S450.
  • the first terminal sends at least one set of identifiers corresponding to the first terminal to at least one associated terminal.
  • the at least one set of identifications includes a first source identification described below.
  • Each set of identifiers includes at least one source identifier (Source ID) and at least one destination identifier (Destination ID).
  • the first terminal may send the at least one set of identifiers in the form of unicast, multicast or broadcast.
  • the at least one associated terminal is a terminal that has a transceiver relationship with the first terminal.
  • any one source identifier in the at least one set of identifiers corresponds to a service, and the first terminal is the sending end of the service.
  • Any one destination identifier in the at least one group of identifiers corresponds to a service, and the first terminal is the receiving end of the service.
  • the at least one terminal includes a second terminal and a third terminal. Then, correspondingly, the second terminal and the third terminal can receive the at least one set of identifiers.
  • the second terminal may also send at least one set of identifiers corresponding to the second terminal to at least one associated terminal with which it has a transceiver relationship.
  • the third terminal may also send at least one set of identifiers corresponding to the third terminal to at least one associated terminal with which it has a transceiver relationship.
  • the third terminal and the second terminal may or may not have a transceiver relationship.
  • the fourth terminal has a transceiver relationship with the second terminal
  • the fourth terminal can also send at least one set of identifiers corresponding to the fourth terminal to at least one associated terminal with which it has a transceiver relationship.
  • the second terminal in addition to receiving at least one set of identifiers sent by the first terminal, the second terminal also receives at least one set of identifiers sent by the fourth terminal.
  • Each group of identifiers includes at least one source identifier and at least one destination identifier, and identifiers belonging to the same group correspond to one terminal. That is, the identifiers belonging to at least one group of identifiers sent by the first terminal correspond to the first terminal, and the identifiers belonging to at least one group of identifiers sent by the fourth terminal correspond to the fourth terminal.
  • the terminal can store the identifier (including the source identifier and the destination identifier) corresponding to the same terminal locally using a certain data structure (such as a table).
  • the second terminal may store at least one set of identifiers corresponding to the first terminal in one table, and store at least one set of identifiers corresponding to the fourth terminal in another table.
  • Table 1 is the source identifier and destination identifier corresponding to the first terminal
  • Table 2 is the source identifier and destination identifier corresponding to the fourth terminal.
  • the second terminal can determine whether the corresponding terminal is the same terminal according to whether the identification belongs to the same table.
  • Table 1 and Table 2 may include the identifier of the unicast service or the identifier of the multicast service.
  • S420 The first terminal determines the COT used for sidelink transmission.
  • This step is the same as S210, and you can refer to S210.
  • S430 The first terminal uses the first resource in the COT to send the first transport block.
  • This step is a specific implementation of S220.
  • the first transmission block includes a first source identifier and first indication information, and the first indication information indicates that the terminal corresponding to the first source identifier is the terminal of the initial COT.
  • first source identification may be included in SCI2.
  • the second terminal determines whether the receiving end of the second transmission block includes the first terminal according to the first indication information and the first source identifier in the first transmission block.
  • the second transmission block includes the first destination identifier
  • the second terminal can determine the second transmission block according to the first indication information, the first source identifier, the first destination identifier, and at least one set of identifiers received by the second terminal. Whether the receiving end includes the initial COT terminal.
  • the second terminal may determine whether the first source identifier and the first destination identifier belong to the same group of identifiers in the at least one group of identifiers received by the second terminal. If the first source identifier and the first destination identifier belong to the same group of identifiers in at least one group of identifiers received by the second terminal, it can be determined that the receiving end of the second transmission block includes the terminal of the initial COT.
  • the first source identifier and/or the first destination identifier do not belong to at least one group of identifiers received by the second terminal, or if the first source identifier and the first destination identifier belong to at least one group of identifiers received by the second terminal, and the first If the source identifier and the first destination identifier do not belong to the same group of identifiers, it can be determined that the receiving end of the second transmission block does not include the terminal of the initial COT.
  • the first source identifier is "00000010" in Table 1
  • the first destination identifier is "0000000000100”
  • the first destination identifier is also in Table 1. Therefore, it can be determined that the first destination identifier corresponds to the terminal of the initial COT, that is, the first The receiving end of the service corresponding to the destination identifier includes the first terminal, so it can be determined that the receiving end of the second transmission block includes the first terminal.
  • the at least one set of identifiers received by the second terminal includes at least one set of identifiers sent by the first terminal.
  • the at least one set of identifiers received by the second terminal also includes at least one set of identifiers sent by the fourth terminal.
  • the fourth terminal may be the same as the first terminal, or may be different.
  • Table 1 may contain the identifier of the multicast service, it may be concluded that the receiving end of the second transmission block may be greater than one terminal and include the first terminal.
  • the destination identifier "0000000000000110" may be the identifier of the multicast service. logo.
  • S450 The second terminal sends the second transmission block by sharing the COT.
  • the second terminal can determine the second terminal according to the identification information corresponding to the terminal obtained in advance, the first source identification and the first indication information in the first transmission block, and the first destination identification in the second transmission block. Whether the receiving end of the transport block includes the first terminal. In the case where the receiving end of the second transport block includes the first terminal, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • Figure 5 is a schematic flow chart of a wireless communication method provided by this application.
  • the method 500 may include S510 to S550.
  • the first terminal sends a set of identifiers to at least one associated terminal.
  • the set of identifiers includes the side link identifier of the first terminal and at least one destination identifier corresponding to the first terminal.
  • the first terminal may send the side link identifier of the first terminal and at least one destination identifier corresponding to the first terminal in the form of unicast, multicast or broadcast.
  • the side link identifier may be a source identifier or a destination identifier of a certain unicast service of the first terminal.
  • the at least one associated terminal is a terminal that has a transceiver relationship with the first terminal.
  • the side link identifier of the first terminal corresponds to a unicast service, and the first terminal is the sending end or receiving end of the unicast service.
  • Any one destination identifier in the at least one group of identifiers corresponds to a service, and the first terminal is the receiving end of the service.
  • the at least one terminal includes a second terminal and a third terminal. Then, correspondingly, the second terminal and the third terminal may receive the side link identifier of the first terminal and at least one destination identifier corresponding to the first terminal.
  • the second terminal may also send the side link identifier of the second terminal and at least one destination identifier corresponding to the second terminal to at least one associated terminal with which it has a transceiver relationship.
  • the third terminal may also send the side link identifier of the third terminal and at least one destination identifier corresponding to the third terminal to at least one associated terminal with which it has a transceiver relationship.
  • the third terminal and the second terminal may or may not have a transceiver relationship.
  • the fourth terminal has a transceiver relationship with the second terminal
  • the fourth terminal can also send the side link identifier of the fourth terminal and the corresponding fourth terminal to at least one associated terminal with which it has a transceiver relationship. at least one purpose identifier.
  • the second terminal in addition to receiving the side link identifier of the first terminal and at least one destination identifier corresponding to the first terminal, the second terminal also receives the side link identifier of the fourth terminal and at least one destination identifier corresponding to the fourth terminal.
  • the side link identifier and at least one destination sent by a terminal are a group of identifiers, and identifiers belonging to the same group correspond to one terminal. That is, the identifier belonging to the group of identifiers sent by the first terminal corresponds to the first terminal, and the identifier belonging to the group of identifiers sent by the fourth terminal corresponds to the fourth terminal.
  • the terminal may store a set of identifiers (including side link identifiers and at least one destination identifier) corresponding to the same terminal locally using a certain data structure (such as a table).
  • a certain data structure such as a table.
  • the second terminal may store a set of identifiers corresponding to the first terminal in one table, and a set of identifiers corresponding to the fourth terminal in another table.
  • Table 3 shows the side link identifier and at least one destination identifier corresponding to the first terminal
  • Table 4 shows the side link identifier and at least one destination identifier corresponding to the fourth terminal.
  • the second terminal can determine whether the corresponding terminal is the same terminal according to whether the identification belongs to the same table.
  • Table 3 and Table 4 may include the identifier of the unicast service or the identifier of the multicast service.
  • S520 The first terminal determines the COT used for sidelink transmission.
  • This step is the same as S210, and you can refer to S210.
  • S530 The first terminal uses the first resource in the COT to send the first transport block.
  • This step is a specific implementation of S220.
  • the first indication information in the first transmission block is the sidelink identifier of the terminal of the initial COT, that is, the sidelink identifier of the first terminal.
  • the first transport block also includes the sending end of the service corresponding to the first transport block, that is, the first source identifier.
  • the second terminal determines whether the receiving end of the second transmission block includes the first terminal according to the side link identifier in the first transmission block.
  • the second transmission block includes a first destination identifier, and the second terminal can determine whether the receiving end of the second transmission block is based on the side link identifier of the first terminal, the first destination identifier, and at least one set of identifiers received by the second terminal. Includes terminal for initial COT.
  • the second terminal may determine whether the side link identifier and the first destination identifier of the first terminal belong to the same group of identifiers in the at least one group of identifiers received by the second terminal. If the side link identifier and the first destination identifier of the first terminal belong to the same group of identifiers in at least one group of identifiers received by the second terminal, it can be determined that the receiving end of the second transmission block includes the terminal of the initial COT.
  • the sidelink identifier of the first terminal and/or the first destination identifier in the second transport block does not belong to at least one group of identifiers received by the second terminal, or if the sidelink identifier of the first terminal and the second destination identifier If the first destination identifier in the transmission block belongs to at least one group of identifiers received by the second terminal, and the side link identifier of the first terminal and the first destination identifier in the second transmission block do not belong to the same group of identifiers, it can be determined that the first destination identifier in the second transmission block does not belong to the same group of identifiers.
  • the receiving end of the second transport block does not include the terminal of the initial COT.
  • the terminal whose first destination identifier corresponds to the initial COT can be determined. That is, the receiving end of the service corresponding to the first destination identifier includes the first terminal, so it can be determined that the receiving end of the second transmission block includes the first terminal.
  • the at least one set of identifiers received by the second terminal includes a set of identifiers sent by the first terminal.
  • at least one set of identifiers received by the second terminal also includes a set of identifiers sent by the fourth terminal.
  • the fourth terminal may be the same as the first terminal, or may be different.
  • Table 3 may contain the identifier of the multicast service, it may be concluded that the receiving end of the second transmission block may be greater than one terminal and include the first terminal.
  • the destination identifier "0000000000000011" may be the identifier of the multicast service. logo.
  • S550 The second terminal sends the second transmission block by sharing the COT.
  • the second terminal can determine whether the receiving end of the second transmission block is based on the identification information corresponding to the terminal obtained in advance, the side link identification of the terminal of the initial COT, and the first destination identification in the second transmission block. Including the first terminal. In the case where the receiving end of the second transport block includes the first terminal, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the third terminal can also detect the first transport block and obtain the first transport block. relevant information (for example, the first source label identification and first indication information, or the sidelink identification of the terminal of the initial COT), then the third terminal can also determine whether the receiving end of the third transport block it is about to send includes the first terminal. If the receiving end of the third transport block includes the first terminal, the third terminal also has the opportunity to share the COT.
  • relevant information for example, the first source label identification and first indication information, or the sidelink identification of the terminal of the initial COT
  • the third terminal may also determine whether the receiving end of the third transport block includes the first terminal according to the method 600 described below.
  • the method 600 may be executed after step S240 in the method 200.
  • Figure 6 is a schematic flow chart of a wireless communication method provided by this application.
  • the method 600 may include S610 to S630.
  • S610 The third terminal detects the second transmission block from the second terminal on the second resource in the COT.
  • the receiving end of the second transmission block may or may not include the third terminal.
  • the second transport block includes second indication information, and the second indication information indicates the terminal of the initial COT.
  • the second indication information may be included in SCI2 or SCI1.
  • S610 is also a step in which the second terminal sends the second transport block, and S610 and S240 may be the same step.
  • the embodiment of the present application introduces step S610 in the method 600.
  • the introduction of this step shall not constitute any limitation to the solution of the present application. .
  • S620 The third terminal determines whether the receiving end of the third transmission block includes the first terminal according to the second indication information.
  • the third terminal may also receive in advance at least a set of identifiers sent by a terminal that has a transceiver relationship with the third terminal.
  • the same group of identifiers corresponds to a terminal, and any group of identifiers includes at least one source identifier and at least one destination identifier.
  • the second transport block may include the first destination identifier.
  • the second indication information may indicate that the terminal corresponding to the first destination identifier is the terminal of the initial COT.
  • the third transmission block includes the second destination identifier.
  • the third terminal may determine whether the receiving end of the third transmission block includes the terminal of the initial COT based on the second indication information, the first destination identifier, the second destination identifier, and at least one set of identifiers received by the third terminal.
  • the third terminal may determine whether the first destination identifier and the second destination identifier belong to the same group of identifiers in the at least one group of identifiers received by the third terminal. If the first destination identifier and the second destination identifier belong to the same group of identifiers in at least one group of identifiers received by the third terminal, it can be determined that the receiving end of the third transmission block includes the terminal of the initial COT.
  • the receiving end of the third transmission block does not include the terminal of the initial COT.
  • the third terminal receives the content in Form 1 and saves Form 1. If the first destination identifier is "0000000000100" in Table 1, and the second destination identifier is "0000000000000101" in Table 1, then it can be determined that the second destination identifier corresponds to the terminal of the initial COT, that is, the reception of the service corresponding to the second destination identifier The end is the first terminal, so it can be determined that the receiving end of the third transmission block includes the first terminal.
  • the third terminal may also receive in advance at least a set of identifiers sent by a terminal that has a transceiver relationship with the third terminal.
  • the same group of identifiers corresponds to a terminal, and any group of identifiers includes the terminal's side link identifier and at least one destination identifier.
  • the second indication information in the second transport block is the sidelink identifier of the first terminal. That is to say, the sidelink identifier in the second transport block is the sidelink identifier of the terminal of the initial COT.
  • the third transmission block includes a second destination identifier
  • the third terminal may determine the third transmission block based on the sidelink identifier of the first terminal, the second destination identifier, and at least one set of identifiers received by the third terminal. Whether the receiving end includes the terminal of the initial COT.
  • the third terminal may determine whether the side link identifier and the second destination identifier of the first terminal belong to the same group of identifiers in the at least one group of identifiers received by the third terminal. If the side link identifier and the second destination identifier of the first terminal belong to the same group of identifiers in at least one group of identifiers received by the third terminal, it can be determined that the receiving end of the third transmission block includes the terminal of the initial COT.
  • the third transmission block can be determined The receiving end does not include the initial COT terminal.
  • the second destination identifier corresponds to the terminal of the initial COT, that is, the second destination
  • the receiving end of the corresponding service is identified as the first terminal, so that it can be determined that the receiving end of the third transmission block includes the first terminal.
  • the third terminal sends the third transmission block by sharing the COT or the COT associated with the COT.
  • the third terminal may send the third transport block through the third resource in the COT or the third resource in the COT associated with the COT.
  • Step S630 is similar to S240, and you can refer to S240.
  • the third transport block carries the information of the resources that can be shared in the COT and/or the CAPC corresponding to the first transport block
  • the information of the resources that can be shared in the COT and the information of the first transport block are carried by the third transport block.
  • the information about resources that can be shared in the COT carried in the two transport blocks may be different. For example, if the information on the resources that can be shared in the COT indicates the remaining duration of the COT in addition to the current timeslot, then the information on the resources that can be shared in the COT carried in the third transport block indicates the remaining duration of the COT. Including the duration of the COT that the second terminal has used.
  • the information about the resources that can be shared in the COT carried by the first transport block indicates that the duration of the remaining COT is 6 time slots
  • the information about the resources that can be shared in the COT carried by the second transport block indicates that the duration of the remaining COT is 6 timeslots.
  • the duration is 4 time slots
  • the third terminal uses 1 time slot in the COT.
  • the information about the resources that can be shared in the COT carried in the third transmission block indicates that the remaining COT duration is 3 time slots.
  • the third transmission block may carry third indication information, and the third indication information indicates the terminal of the initial COT.
  • the third indication information may indicate that the second destination identifier in the third transmission block corresponds to the terminal of the initial COT, or, The third indication information is the sidelink link identifier of the third terminal.
  • the third terminal when the third terminal does not detect the transmission block of the terminal of the initial COT, it can determine the reception of the third transmission block to be transmitted based on the transmission blocks sent by other terminals that have a transceiver relationship with the terminal of the initial COT. Whether the terminal includes the terminal of the initial COT. In the case where the receiving end of the third transport block includes the terminal of the initial COT, the second terminal has the opportunity to share the COT, which is beneficial to improving the probability of accessing the channel.
  • the present application also provides a wireless communication method that allows the terminal to determine whether the COT can be shared. If the COT can be shared, the terminal has the opportunity to share the COT, thereby improving the probability of accessing the channel.
  • the method 700 will be described below with reference to FIG. 7 .
  • S710 The first terminal determines the COT used for sidelink transmission.
  • the first terminal can monitor the channel through type 1 LBT. If the channel is confirmed to be idle, it can obtain the right to use the channel for a period of time, and the COT can be determined.
  • the first terminal can obtain the COT through the type 1 LBT access channel, which can also be called the first terminal initializing the COT, and the first terminal is the terminal that initializes the COT.
  • S720 The first terminal uses the first resource in the COT to send the first transport block.
  • the second terminal may be the receiving end of the first transport block, or may not be the receiving end of the first transport block. Correspondingly, the second terminal detects the first transport block on the first resource in the COT.
  • the first transmission block may include first indication information, and the first indication information may indicate whether the terminal of the initial COT authorizes other terminals to share the COT.
  • the first indication information may be carried in SCI1 or SCI2 in the first transport block, or may be carried in other parts, which is not limited in this application.
  • the first transport block may also include information about the first CAPC and/or resources that can be shared in the COT.
  • the second terminal determines whether the terminal of the initial COT authorizes other terminals to share the COT according to the first indication information in the first transmission block.
  • the second terminal sends the second transmission block by sharing the COT or the COT associated with the COT.
  • the first indication information indicates that the terminal of the initial COT authorizes other terminals to share the COT
  • other terminals can determine whether to share the COT by themselves. For example, if other terminals meet other conditions for sharing the COT, the COT can be shared. For example, satisfying other conditions for sharing the COT may include satisfying the CAPC priority of the services that can share the COT.
  • the resource for transmitting the second transport block here may be selected and used with reference to the foregoing description of S240.
  • the receiving end of the second transmission block may not be the first terminal, or may not include the first terminal.
  • the first terminal indicates whether the COT is authorized to be shared by carrying indication information in the transmission block, so that other terminals can determine whether the COT is authorized to be shared based on the indication information. If the COT is authorized to be shared, other terminals Terminals have the opportunity to share the COT, which helps improve the probability of accessing the channel.
  • embodiments of the present application also provide corresponding devices, and the devices include corresponding units or modules for executing the above embodiments.
  • the module may be software, hardware, or a combination of software and hardware.
  • FIG 8 is a schematic diagram of a communication device 800 provided by this application.
  • the device 800 may include: an interface module 801 and a processing module 802.
  • a storage module 803 may also be included.
  • one or more modules in Figure 8 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and a transceiver; or may be implemented by one or more processors, memories, and transceivers, which are not limited in the embodiments of the present application.
  • the processor, memory, and transceiver can be set separately or integrated.
  • the device 800 has the function of implementing the terminal (for example, a first terminal, a second terminal or a third terminal) described in the embodiments of this application.
  • the device 800 includes a terminal that performs the terminal-related steps described in the embodiments of this application.
  • Corresponding modules or units or means (means), the functions or units or means (means) can be implemented by software, or implemented by hardware, or can also be implemented by hardware executing corresponding software, or by a combination of software and hardware accomplish. For details, reference may be made to the corresponding descriptions in the foregoing corresponding method embodiments.
  • each module in the device 800 in the embodiment of the present application can be used to perform the operations performed by the second terminal in the above method embodiment.
  • the device 800 may include an interface module 801 and a processing module 802.
  • the processing module 802 is configured to detect the first transmission block from the terminal of the initial COT on the first resource in the channel occupancy time COT, where the first transmission block includes first indication information, and the first indication information indicates Initialize the terminal of the COT;
  • the interface module 801 is configured to send a second transmission block by sharing the COT or a COT associated with the COT according to the first indication information.
  • the receiving end of the second transmission block includes an initial terminal of the COT.
  • the processing module 802 specifically determines whether the receiving end of the second transmission block includes the terminal that initiated the COT according to the first indication information; in the second transmission If the receiving end of the block includes the terminal that originally initiated the COT, the interface module 801 sends the second transmission block by sharing the COT or a COT associated with the COT.
  • the first transport block also includes information about resources that can be shared in the COT and/or the first CAPC, and the first CAPC is the initial COT.
  • the CAPC adopted by the terminal when initializing the COT; wherein, the processing module 802 is also configured to determine the second CAPC in the COT based on the information of resources that can be shared in the COT and/or the first CAPC. resource or the second resource in the COT associated with the COT; the interface module 801 is specifically configured to send the second transport block on the second resource by sharing the COT.
  • the processing module 802 is specifically configured to report to the media access control MAC layer at the physical layer according to the information about the resources that can be shared in the COT and/or the first CAPC.
  • the resources that can be shared in the COT the intersection of the resources that can be shared in the COT and the resource selection window, or the intersection of the resources that can be shared in the COT and the candidate resource set;
  • the MAC layer determines the second resource in the COT or the second resource in the COT associated with the COT based on the information reported by the physical layer.
  • the first transmission block further includes a first source identifier, and the first indication information indicates that the terminal corresponding to the first source identifier is the terminal that initiated the COT.
  • the second transmission block also includes a first destination identifier; wherein, the interface Module 801 is also configured to receive at least one group of identifiers, each group of identifiers including at least one source identifier and at least one destination identifier, and identifiers belonging to the same group correspond to one terminal; the processing module 802 is specifically configured to perform the processing according to the first indication information, the The first source identifier, the first destination identifier, and the at least one set of identifiers determine whether the receiving end of the second transmission block includes the terminal that initiated the COT.
  • the first indication information includes a side link identifier of the terminal that initiates the COT.
  • the second transmission block also includes a first destination identifier; wherein the interface module 801 is also configured to receive at least one set of identifiers, each set of identifiers including a side link identifier and At least one destination identifier, and identifiers belonging to the same group correspond to one terminal; the processing module 802 determines the initial destination identifier based on the initial side link identifier of the terminal of the COT, the first destination identifier, and the at least one group of identifiers. Whether the receiving end of the second transmission block includes the terminal of the original COT.
  • the second transmission block includes second indication information, and the second indication information indicates the terminal that initiated the COT.
  • the second transmission block further includes a first destination identifier, and the second indication information indicates that the terminal corresponding to the first destination identifier is the terminal that initiated the COT; or , the second indication information includes the sidelink identifier of the terminal that initiated the COT.
  • the second transport block also includes information about resources that can be shared in the COT and/or the first CAPC, and the first CAPC is the initial COT.
  • the CAPC used by the terminal during initial COT is the initial COT.
  • each module in the device 800 in the embodiment of the present application can be used to perform the operations performed by the third terminal in the above method embodiment.
  • the device 800 may include an interface module 801 and a processing module 802.
  • the processing module 802 is configured to detect a second transmission block from the second terminal on the second resource in the channel occupancy time COT, where the second transmission block includes second indication information, and the second indication information indicates that the initial The terminal of the COT;
  • the interface module 801 is configured to send a third transmission block by sharing the COT or the COT associated with the COT according to the second indication information.
  • the receiving end of the third transmission block includes the initialization of the COT. terminal.
  • the processing module 802 is specifically configured to determine whether the receiving end of the third transmission block includes the terminal that initiated the COT according to the second indication information; the receiving module 801 is specifically configured to use In the case where the receiving end of the third transport block includes the terminal that originated the COT, the third transport block is sent by sharing the COT or a COT associated with the COT.
  • the second transmission block includes information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the terminal in the initial COT.
  • the CAPC used when initializing the COT, and the first transmission block comes from the terminal that initializes the COT; wherein, the processing module 802 is also configured to based on the information of resources that can be shared in the COT and/or the third A CAPC determines the third resource in the COT or the third resource in the COT associated with the COT; wherein, the receiving module 801 is specifically used to determine the third resource in the COT or the third resource in the COT associated with the COT.
  • the third transport block is sent through the shared COT or the COT associated with the COT.
  • the processing module 802 is specifically configured to report to the media access control MAC layer at the physical layer according to the information about the resources that can be shared in the COT and/or the first CAPC.
  • the resources that can be shared in the COT the intersection of the resources that can be shared in the COT and the resource selection window, or the intersection of the resources that can be shared in the COT and the candidate resource set;
  • the MAC layer determines the third resource in the COT or the third resource in the COT associated with the COT based on the information reported by the physical layer.
  • the second transmission block further includes a first destination identifier, and the second indication information indicates that the terminal corresponding to the first destination identifier is the terminal that initiated the COT.
  • the third transmission block includes a second destination identifier; wherein the interface module 801 is also configured to receive at least one set of identifiers, each set of identifiers including at least one source identifier and at least one destination identifier. Identities, identifications belonging to the same group correspond to one terminal; the processing module 802 is specifically configured to determine the said Whether the receiving end of the third transport block includes the initial COT terminal.
  • the second indication information includes the side link identifier of the terminal that initiated the COT.
  • the third transmission block also includes a second destination identifier; wherein the interface module 801 is further configured to receive at least one set of identifiers, each set of identifiers including a side link identifier and At least one destination identifier, and identifiers belonging to the same group correspond to one terminal; the processing module 802 is specifically configured to determine based on the initial side link identifier of the terminal of the COT, the second destination identifier, and the at least one group of identifiers. Whether the receiving end of the third transmission block includes the terminal that initiated the COT.
  • the third transmission block includes third indication information, and the third indication information indicates the terminal that initiated the COT.
  • the third transmission block further includes a second destination identifier, and the third indication information indicates that the terminal corresponding to the second destination identifier is the terminal that initiated the COT; or ,
  • the third indication information includes the initial sidelink identifier of the COT.
  • the third transport block also includes information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the location of the first terminal in the COT.
  • the CAPC used in the initial COT is the information about resources that can be shared in the COT and/or a first CAPC, where the first CAPC is the location of the first terminal in the COT.
  • the CAPC used in the initial COT is the CAPC used in the initial COT.
  • each module in the device 800 in the embodiment of the present application can be used to perform the operations performed by the first terminal in the above method embodiment.
  • the device 800 may include an interface module 801 and a processing module 802.
  • the processing module 802 is used for the device 800 to determine the channel occupancy time COT for sidelink transmission; the interface module 801 is used to use the first resource in the COT to send the first transmission block, where the first transmission block includes the An indication information, the first indication information indicates the terminal that initiates the COT, and the device 800 is the terminal that initiates the COT.
  • the first transmission block also includes a first source identifier corresponding to the device 800, and the first indication information indicates that the terminal corresponding to the first source identifier is the initial target.
  • the terminal of the COT; and, the interface module 801 is also configured to send the at least one group of identifiers corresponding to the device 800 to at least one associated terminal, each group of identifiers including at least one source identifier and at least one destination identifier, the at least one The group identifier includes the first source identifier, and the at least one associated terminal is a terminal that has a transceiver relationship with the device 800 .
  • the first indication information includes the side link identifier of the terminal that initializes the COT; the interface module 801 is also configured to send the side link identifier of the device 800 to at least one associated terminal.
  • the link identifier corresponds to at least one destination identifier of the device 800, and the at least one associated terminal is a terminal that has a transceiver relationship with the device 800.
  • the first transport block further includes information about resources that can be shared in the COT and/or the channel access priority CAPC corresponding to the first transport block.
  • FIG. 9 is a schematic diagram of a communication device 900 provided by this application.
  • the device 900 may be a terminal (for example, a first terminal, a second terminal or a third terminal), or may be a chip, chip system, or processor that supports the terminal to implement the above method.
  • the device 900 can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • the device 900 may include one or more processors 901, which may also be referred to as processing units, and may implement certain control functions.
  • the processor 901 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data.
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process Software program data.
  • the processor 901 can also store instructions and/or data 903, which can be executed by the processor, so that the device 900 executes the method described in the above embodiment. Methods.
  • the processor 901 may include a transceiver unit for implementing reception and transmission functions.
  • the transceiver unit may be a transceiver circuit, an interface, an interface circuit, or a transceiver circuit used to implement receiving and transmitting functions.
  • the receive and send functions can be separate or integrated.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the device 900 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the device 900 may include one or more memories 902, on which instructions 904 may be stored, and the instructions may be executed on the processor, so that the device 900 performs the steps described in the above method embodiments. method.
  • data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and memory can be provided separately or integrated together. For example, the corresponding relationships described in the above method embodiments may be stored in the memory or in the processor.
  • the device 900 may also include a transceiver 905 and/or an antenna 906.
  • the processor 901 may be called a processing unit and controls the device 900 .
  • the transceiver 905 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver, etc., and is used to implement transceiver functions.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS N-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium ars
  • the device described in the above embodiments may be a terminal (for example, a first terminal, a second terminal or a third terminal), but the scope of the device described in this application is not limited thereto, and the structure of the device may not be limited to that of FIG. 9 limit.
  • the device may be a stand-alone device or may be part of a larger device.
  • the device may be: (1) an independent integrated circuit IC, a chip, or a chip system or a subsystem; (2) a collection of one or more ICs.
  • the IC collection may also include Storage components for storing data and/or instructions; (3) ASICs, such as modems (MSM); (4) Modules that can be embedded in other devices; (5) Receivers, terminals, smart terminals, cellular phones, wireless devices , handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.; (6) Others, etc.
  • ASICs such as modems (MSM)
  • MSM modems
  • Modules that can be embedded in other devices
  • (6) Others etc.
  • FIG. 10 provides a schematic structural diagram of a terminal.
  • terminal 1000 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal, execute software programs, and process data of software programs.
  • Memory is mainly used to store software programs and data.
  • Radio frequency circuits are mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal to obtain the radio frequency signal and sends the radio frequency signal out in the form of electromagnetic waves through the antenna. .
  • the radio frequency circuit receives the radio frequency signal through the antenna.
  • the radio frequency signal is further converted into a baseband signal and the baseband signal is output to the processor.
  • the processor converts the baseband signal into data and processes the data. .
  • Figure 10 shows only one memory and processor. In a real terminal, there can be multiple processors and memories.
  • the memory may also be called a storage medium or a storage device, which is not limited in this embodiment of the present invention.
  • the processor can include a baseband processor and a central processor.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processor is mainly used to control the entire terminal and execute software. Programs, which process data for software programs.
  • the processor in Figure 10 integrates the functions of a baseband processor and a central processor.
  • the baseband processor and the central processor can also be independent processors and are interconnected through technologies such as buses.
  • a terminal may include multiple baseband processors to adapt to different network standards, the terminal may include multiple central processors to enhance its processing capabilities, and various components of the terminal may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing communication protocols and communication data can be built into the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and the control circuit with the transceiver function can be regarded as the transceiver unit 1011 of the terminal 1000
  • the processor with the processing function can be regarded as the processing unit 1012 of the terminal 1000
  • the terminal 1000 includes a transceiver unit 1011 and processing unit 1012.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, etc.
  • the devices used to implement the receiving function in the transceiving unit 1011 can be regarded as receiving units
  • the devices used in the transceiving unit 1011 used to implement the transmitting function can be regarded as sending units.
  • the transceiving unit 1011 includes a receiving unit and a transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, a transmitting circuit, etc.
  • the above-mentioned receiving unit and sending unit may be one unit integrated together, or may be multiple independent units.
  • the above-mentioned receiving unit and sending unit may be located in one geographical location, or may be dispersed in multiple geographical locations.
  • each step in the method embodiment provided in this application can be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor for execution, or can be executed by a combination of hardware and software modules in the processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the computer program product includes: computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to perform various steps performed by the first terminal in any of the above method embodiments. or process.
  • the computer program product includes: computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to perform various steps performed by the second terminal in any of the above method embodiments. or process.
  • the computer program product includes: computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to perform various steps performed by the third terminal in any of the above method embodiments. or process.
  • This application also provides a computer-readable storage medium that stores program code.
  • the program code When the program code is run on a computer, it causes the computer to execute the steps executed by the first terminal in any of the above method embodiments. individual steps or processes.
  • This application also provides a computer-readable storage medium that stores program code.
  • the program code When the program code is run on a computer, it causes the computer to execute the steps executed by the second terminal in any of the above method embodiments. individual steps or process.
  • This application also provides a computer-readable storage medium that stores program code.
  • the program code When the program code is run on a computer, it causes the computer to execute the steps executed by the third terminal in any of the above method embodiments. individual steps or processes.
  • This application also provides a communication system, which includes one or more of the following: a first terminal, a second terminal, or a third terminal.
  • transceiver unit or transceiver performs the steps of receiving or sending in the method embodiments. Other steps except sending and receiving can be performed by Processing unit or processor executes.
  • a component may be, but is not limited to, a process, a processor, an object, an executable file, a thread of execution, a program and/or a computer running on a processor.
  • applications running on the computing device and the computing device may be components.
  • One or more components can reside in a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. Additionally, these components can execute from various computer-readable storage media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it may 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 (programs). When the computer program instructions (program) are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated therein.
  • the usable media may be magnetic media, (e.g. Such as floppy disk, hard disk, magnetic tape), optical media (such as DVD), or semiconductor media (such as solid state disk (SSD)), etc.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请提供了一种无线通信方法和通信装置，涉及通信领域。该方法中，第一终端通过第一类LBT获得COT，并在该COT中的第一资源上发送第一传输块，第一传输块包括第一指示信息，第一指示信息指示初始该COT的终端，即第一指示信息指示第一终端；第二终端检测到第一传输块，可以根据第一指示信息，通过共享该COT或该COT关联的COT发送接收端包括初始该COT的终端的第二传输块。该方法通过初始COT的终端携带指示信息指示初始COT的终端，使得其他终端可以根据该指示信息确定其接收端是否包括该初始COT。如果其他终端的接收端包括初始COT，则有机会共享该COT，即有机会通过第二类的LBT接入信道，从而可以提高接入信道的概率。

Description

无线通信方法和通信装置
本申请要求于2022年07月15日提交国家知识产权局、申请号为202210837511.3、申请名称为“一种共享信道指示方法和装置”以及2022年08月12日提交国家知识产权局、申请号为202210972447.X、申请名称为“无线通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种无线通信方法和通信装置。
背景技术
为了支持更高速率业务的传输，终端直连通信可以扩展到带宽较大的非授权频谱上，即，侧行链路非授权(sidelink-unlicensed，SL-U)。在非授权频谱上发送之前，终端需要进行信道侦听(listen-before-talk，LBT)以确认信道空闲。LBT共分两大类，分别是第一类LBT(即，type 1 LBT)和第二类LBT(即，type 2 LBT)。其中，type 1 LBT需要进行计数器回退，侦听信道时间一般较长；type 2 LBT只需要对信道进行固定时间的侦听，侦听时间一般较短，因而也被称为one-shot LBT。
一般而言，信道侦听所需时间越长，监测到信道繁忙的可能性就越大，接入信道的概率就越低。为了提升终端接入信道的概率，侧行链路(sidelink，SL)可以支持信道占用时间共享(channel occupancy time sharing，COT sharing)。具体而言，只有初始COT的终端(即第一个抢到信道的设备)需要在发送前进行type 1 LBT，可以共享COT的其他终端只需在发送前进行type 2 LBT。由于type 2 LBT大概率比type 1 LBT所需的信道侦听时间更短，故可以提升共享COT的其他终端接入信道的概率。
已知一种技术，信道共享由初始COT的终端决定。具体而言，一旦某一终端通过type 1 LBT抢占信道，则该终端将决定该COT内的时频资源如何分配，并通知可以共享该COT的终端分别可以共享的资源。但该方案需要初始COT的终端预先知道哪些终端的传输可以共享自己抢占的COT，并且，初始COT的终端还需要具备对时频资源进行分配的能力。如果初始COT的终端不能满足上述要求，那么初始COT的终端将无法共享COT。从而，其他终端只能通过type 1 LBT接入信道，导致接入信道的概率较低。
发明内容
本申请提供了一种无线通信方法和通信装置，能够提高接入信道的概率。
第一方面，提供了一种无线通信方法，该方法可以由第二终端执行，也可以由第二终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分第二终端功能的逻辑模块或软件实现。下面以该方法由第二终端执行为例进行描述。
该方法包括：第二终端在COT中的第一资源上检测到来自初始该COT的终端的第一传输块，第一传输块包括第一指示信息，第一指示信息指示初始该COT的终端；第二终端根据第一指示信息，通过共享该COT或该COT关联的COT发送第二传输块，第二传输块的接收端包括初始该COT的终端。
应理解，初始该COT的终端是指通过第一类LBT接入信道获得该COT的终端。第一类LBT可以是type 1 LBT。第二终端通过共享该COT或该COT关联的COT发送第二传输块是指，第二终端通过第二类LBT接入信道并使用该COT或该COT关联的COT中的资源发送第二传输块。第二类LBT可以是type 2 LBT。
还应理解，第一传输块的接收端可以包括第二终端，也可以不包括第二终端。该COT关联COT是指与该COT相隔若干个业务周期的COT，并且，这两个COT对应的信道相同。
在一个示例中，第一传输块中的侧行链路控制信息(sidelinkcontrolinformation，SCI)1或SCI2包括第一指示信息。
根据本申请提供的无线通信方法，通过初始COT的终端携带指示信息指示初始COT的终端， 使得其他终端可以根据该指示信息确定其接收端是否包括该初始COT。如果其他终端的接收端包括初始COT，则有机会共享该COT，即有机会通过type 2的LBT接入信道，从而可以提高接入信道的概率。
在一些可能的实现方式中，第二终端根据第一指示信息，通过共享该COT或该COT关联的COT发送第二传输块，包括：第二终端根据第一指示信息，确定第二传输块的接收端是否包括初始该COT的终端；在第二传输块的接收端包括初始该COT的终端的情况下，第二终端通过共享该COT或该COT关联的COT发送第二传输块。
在一些可能的实现方式中，第一传输块还可以包括该COT中可被共享的资源的信息和/或第一信道接入优先级(channel access priority class，CAPC)，第一CAPC为初始该COT的终端在初始该COT时所采用的CAPC。
其中，在一个示例中，在第二终端通过共享该COT发送第二传输块之前，该方法可以还包括：第二终端根据该COT中可被共享的资源的信息和/或第一传输块对应的CAPC，确定该COT中的第二资源。进一步地，第二终端可以在该COT中的第二资源上通过共享该COT发送第二传输块。
在另一个示例中，在第二终端通过共享该COT关联的COT发送第二传输块之前，该方法可以还包括：第二终端根据该COT中可被共享的资源的信息和/或第一CAPC，确定该COT关联的COT中的第二资源。进一步地，第二终端可以在该COT关联的COT中的第二资源上通过共享该COT关联的COT发送第二传输块。
第一CAPC指示目标传输块对应的业务的CAPC优先级。初始该COT的终端初始该COT是为了发送目标传输块。另外，根据第一CAPC，还可以确定该COT对应的最大信道占用时间(maximum channel occupancy time，MCOT)。该COT对应的MCOT也可以称为该COT的总共时长。
示例性的，第二终端可以根据第一CAPC确定是否能够共享该COT；在第二传输块对应的CAPC指示的优先级大于或等于第一CAPC指示的优先级的情况下，第二终端确定可以共享该COT。
示例性的，第二终端可以根据第一CAPC或者该COT中可被共享的资源的信息，确定该COT中的第二资源或该COT关联的COT中的第二资源。
在一些可能的实现方式中，第二终端根据该COT中可被共享的资源的信息和/或第一CAPC，确定该COT中的第二资源或该COT关联的COT中的第二资源，包括：第二终端的物理层根据该COT中可被共享的资源的信息和/或第一CAPC，向第二终端的媒体接入控制(medium accesscontrol，MAC)层上报下述中的一种：该COT内可被共享的资源、该COT内可被共享的资源与资源选择窗的交集、或者该COT内可被共享的资源与候选资源集合的交集；第二终端的MAC层根据物理层上报的信息，确定该COT中的第二资源或该COT关联的COT中的第二资源。
在一些可能的实现方式中，第一传输块还可以包括第一源标识，第一指示信息指示第一源标识对应的终端为初始该COT的终端。
基于该方案，可以实现通过第一指示信息指示初始该COT的终端。
在一些可能的实现方式中，第二传输块还包括第一目的标识。
其中，在第二终端在该COT中的第一资源上检测到来自初始该COT的终端的第一传输块之前，该方法还可以包括：第二终端接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端。进一步地，第二终端可以根据第一指示信息、第一源标识、第一目的标识、以及该至少一组标识，确定第二传输块的接收端是否包括初始该COT的终端。
具体地，第二终端可以确定第一源标识和第一目的标识是否属于该至少一组标识中的同一组标识。若第一源标识和第一目的标识属于该至少一组标识中的同一组标识，第二终端可以确定第二传输块的接收端包括初始该COT的终端。若在第一源标识和/或第一目的标识不属于该至少一组标识，或者，若第一源标识和第一目的标识属于该至少一组标识，且第一源标识和第一目的标识不属于同一组标识，第二终端可以确定第二传输块的接收端不包括初始该COT的终端。
基于该方案，第二终端可以根据提前获得的与终端对应的标识信息、第一传输块中的第一源标识和第一指示信息、以及第二传输块中的第一目的标识，确定第二传输块的接收端是否包括第 一终端。在第二传输块的接收端包括第一终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第一指示信息为初始该COT的终端的侧行链路标识。
示例性的，该COT的终端的侧行链路标识可以是该终端的单播业务的源标识或者目的标识。
在一些可能的实现方式中，第二传输块还可以包括第一目的标识。
其中，在第二终端在该COT中的第一资源上检测到来自初始该COT的终端的第一传输块之前，该方法还可以包括：第二终端接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端。进一步地，第二终端可以根据初始该COT的终端的侧行链路标识、第一目的标识、以及该至少一组标识，确定第二传输块的接收端是否包括初始该COT的终端。
具体地，第二终端可以确定初始该COT的终端的侧行链路标识和第一目的标识是否属于该至少一组标识中的同一组标识。若初始该COT的终端的侧行链路标识和第一目的标识属于该至少一组标识中的同一组标识，第二终端可以确定第二传输块的接收端包括初始该COT的终端。若在初始该COT的终端的侧行链路标识和/或第一目的标识不属于该至少一组标识，或者，若初始该COT的终端的侧行链路标识和第一目的标识属于该至少一组标识，且初始该COT的终端的侧行链路标识和第一目的标识不属于同一组标识，第二终端可以确定第二传输块的接收端不包括初始该COT的终端。
基于该方案，第二终端可以根据提前获得的与终端对应的标识信息、初始COT的终端的侧行链路标识以及第二传输块中的第一目的标识，确定第二传输块的接收端是否包括第一终端。在第二传输块的接收端包括第一终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第二传输块包括第二指示信息，所述第二指示信息指示初始该COT的终端。
基于该方案，其他检测到第二传输块的终端可以确定初始该COT的终端。
在一些可能的实现方式中，第二传输块还包括第一目的标识，第二指示信息指示第一目的标识对应的终端为初始该COT的终端；或者，所述第二指示信息包括初始该COT的终端的侧行链路标识。
在一些可能的实现方式中，第二传输块还包括该COT中可被共享的资源的信息和/或所述第一传输块对应的CAPC。
第二方面，提供了一种无线通信方法，该方法可以由第三终端执行，也可以由第三终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分第三终端功能的逻辑模块或软件实现。下面以该方法由第三终端执行为例进行描述。
该方法包括：第三终端在COT中的第二资源上检测到来自第二终端的第二传输块，第二传输块包括第二指示信息，第二指示信息指示初始该COT的终端；第三终端根据第二指示信息，通过共享该COT或该COT关联的COT发送第三传输块，第三传输块的接收端包括初始该COT的终端。
应理解，初始该COT的终端是指通过第一类LBT接入信道获得该COT的终端。第一类LBT可以是type 1 LBT。第三终端通过共享该COT或该COT关联的COT发送第三传输块是指，第三终端通过第二类LBT接入信道并使用该COT或该COT关联的COT中的资源发送第三传输块。
第二类LBT可以是type 2 LBT。
还应理解，第二传输块的接收端可以包括第三终端，也可以不包括第三终端。该COT关联COT是指与该COT相隔若干个业务周期的COT，并且，这两个COT对应的信道相同。
在一个示例中，第二传输块中的SCI 1或SCI 2包括第二指示信息。
根据本申请提供的无线通信方法，第三终端在没有检测到初始COT的终端的传输块的情况下，可以根据与初始COT的终端具有收发关系的其他终端发送的传输块来确定即将传输的第三传输块的接收端是否包括初始COT的终端。在第三传输块的接收端包括初始COT的终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第三终端根据第二指示信息，通过共享该COT或该COT关联的COT发送第三传输块，包括：第三终端根据第二指示信息，确定第三传输块的接收端是否包括初始该COT的终端；在第三传输块的接收端包括初始该COT的终端的情况下，第三终端通过共享该COT或该COT关联的COT发送第三传输块。
在一些可能的实现方式中，第二传输块包括该COT中可被共享的资源的信息和/或第一CAPC，第一CAPC为初始该COT的终端在初始该COT时所采用的CAPC。
其中，在一个示例中，在第三终端通过共享该COT发送第三传输块之前，该方法可以还包括：第三端根据该COT中可被共享的资源的信息和/或第一传输块对应的CAPC确定该COT中的第三资源。进一步地，第三终端在该COT中的第三资源上，通过共享该COT发送第三传输块。
在另一个示例中，在第三终端通过共享该COT关联的COT发送第三传输块之前，该方法可以还包括：第三终端根据该COT中可被共享的资源的信息和/或第一传输块对应的CAPC确定该COT关联的COT中的第三资源。进一步地，第三终端在该COT关联的COT中的第三资源上，通过共享该COT关联的COT发送第三传输块。
第一CAPC指示目标传输块对应的业务的CAPC优先级。初始该COT的终端初始该COT是为了发送目标传输块。另外，根据第一CAPC，还可以确定该COT对应的最大信道占用时间MCOT。该COT对应的MCOT也可以称为该COT的总共时长。
示例性的，第三终端可以根据第一CAPC确定是否能够共享该COT；在第三传输块对应的CAPC指示的优先级大于或等于第一CAPC指示的优先级的情况下，第三终端确定可以共享该COT。
示例性的，第三终端可以根据第一CAPC或者该COT中可被共享的资源的信息，确定该COT中的第三资源或该COT关联的COT中的第三资源。
在一些可能的实现方式中，第三终端根据该COT中可被共享的资源的信息和/或第一CAPC，确定该COT中的第三资源或该COT关联的COT中的第三资源，包括：第三终端的物理层根据该COT中可被共享的资源的信息和/或第一CAPC，向第三终端的MAC层上报下述中的一种：该COT内可被共享的资源、该COT内可被共享的资源与资源选择窗的交集、或者该COT内可被共享的资源与候选资源集合的交集；第三终端的MAC层根据物理层上报的信息，确定该COT中的第三资源或该COT关联的COT中的第三资源。
在一些可能的实现方式中，第二传输块还可以包括第一目的标识，第二指示信息指示所述第一目的标识对应的终端为初始该COT的终端。
基于该方案，可以实现通过第二指示信息指示初始该COT的终端。
在一些可能的实现方式中，第三传输块包括第二目的标识。
其中，在第三终端在该COT中的第二资源上检测到来自第二终端的第二传输块之前，该方法还可以包括：第三终端接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端。进一步地，第三终端可以根据第三终端根据第二指示信息、第一目的标识、第二目的标识、以及该至少一组标识，确定第三传输块的接收端是否包括初始该COT的终端。
具体地，第二终端可以确定第一目的标识和第二目的标识是否属于该至少一组标识中的同一组标识。若第一目的标识和第二目的标识属于该至少一组标识中的同一组标识，第三终端可以确定第三传输块的接收端包括初始该COT的终端。若在第一目的标识和/或第二目的标识不属于该至少一组标识，或者，若第一目的标识和第二目的标识属于该至少一组标识，且第一目的标识和第二目的标识不属于同一组标识，第三终端可以确定第三传输块的接收端不包括初始该COT的终端。
基于该方案，第三终端可以根据提前获得的与终端对应的标识信息、第二传输块中的第一目的标识和第二指示信息、以及第三传输块中的第二目的标识，确定第三传输块的接收端是否包括初始该COT的终端。在第三传输块的接收端包括初始该COT的终端的情况下，第三终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第二指示信息为初始该COT的终端的侧行链路标识。
在一些可能的实现方式中，第三传输块还包括第二目的标识。
其中，在第三终端在该COT中的第二资源上检测到来自第二终端的第二传输块之前，该方法还可以包括：第三终端接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端。进一步地，第三终端根据初始该COT的终端的侧行链路标识、第二目的标识、以及该至少一组标识，确定第三传输块的接收端是否包括初始该COT的终端。
具体地，第三终端可以确定初始该COT的终端的侧行链路标识和第二目的标识是否属于该至少一组标识中的同一组标识。若初始该COT的终端的侧行链路标识和第二目的标识属于该至少一组标识中的同一组标识，第三终端可以确定第三传输块的接收端包括初始该COT的终端。若在初始该COT的终端的侧行链路标识和/或第二目的标识不属于该至少一组标识，或者，若初始该COT的终端的侧行链路标识和第二目的标识属于该至少一组标识，且初始该COT的终端的侧行链路标识和第二目的标识不属于同一组标识，第三终端可以确定第三传输块的接收端不包括初始该COT的终端。
基于该方案，第三终端可以根据提前获得的与终端对应的标识信息、初始COT的终端的侧行链路标识以及第三传输块中的第二目的标识，确定第二传输块的接收端是否包括初始该COT的终端。在第三传输块的接收端包括初始该COT的终端的情况下，第三终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第三传输块还可以包括第三指示信息，第三指示信息指示初始该COT的终端。
基于该方案，其他检测到第三传输块的终端可以确定初始该COT的终端。
在一些可能的实现方式中，第三传输块还包括第二目的标识，第三指示信息指示第二目的标识对应的终端为初始该COT的终端；或者，第三指示信息包括初始该COT的侧行链路标识。
在一些可能的实现方式中，第三传输块还包括该COT中可被共享的资源的信息和/或第一传输块对应CAPC，第一传输块来自初始该COT的终端。
第三方面，提供了一种无线通信方法，该方法可以由第一终端执行，也可以由第一终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分第一终端功能的逻辑模块或软件实现。下面以该方法由第二终端执行为例进行描述。
该方法包括：第一终端确定用于进行侧行链路传输的信道占用时间COT；第一终端使用该COT中的第一资源发送第一传输块，第一传输块包括第一指示信息，第一指示信息指示初始该COT的终端，第一终端为初始该COT的终端。
应理解，第一终端确定用于进行侧行链路传输的COT是指，第一终端通过第一类LBT接入信道获得该COT。第一类LBT可以是type 1 LBT。第一终端通过第一类LBT接入信道获得COT也可以称为第一终端初始该COT，第一终端为初始该COT的终端。
还应理解，第一传输块的接收端可以包括第二终端，也可以不包括第二终端。
在一个示例中，第一传输块中的SCI 1或SCI 2包括第一指示信息。
根据本申请提供的无线通信方法，通过初始COT的终端携带指示信息指示初始COT的终端，使得其他终端可以根据该指示信息确定其接收端是否包括该初始COT。如果其他终端的接收端包括初始COT，则有机会共享该COT，即有机会通过type 2的LBT接入信道，从而可以提高接入信道的概率。
在一些可能的实现方式中，第一传输块还包括第一终端对应的第一源标识，第一指示信息指示第一源标识对应的终端为初始该COT的终端；以及，在第一终端使用该COT中的第一资源发送第一传输块之前，该方法还可以包括：第一终端向至少一个关联终端发送第一终端对应的该至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，该至少一组标识包括所述第一源标识，该至少一个关联终端为与第一终端具有收发关系的终端。
基于该方案，该至少一个关联终端可以基于第一终端发送的该至少一组标识，确定其接收端是否包括第一终端。
在一些可能的实现方式中，所述第一指示信息为初始该COT的终端的侧行链路标识；以及，在第一终端使用该COT中的第一资源发送第一传输块之前，该方法还可以包括：第一终端向至少一个关联终端发送第一终端的侧行链路标识和第一终端对应的至少一个目的标识，该至少一个关 联终端为与第一终端具有收发关系的终端。
基于该方案，该至少一个关联终端可以基于第一终端发送的第一终端的侧行链路标识和第一终端对应的至少一个目的标识，确定其接收端是否包括第一终端。
在一些可能的实现方式中，第一传输块还包括该COT中可被共享的资源的信息和/或第一CAPC，第一CAPC为第一终端在初始该COT时所采用的CAPC。
第四方面，提供了一种无线通信方法，该方法可以由第一终端执行，也可以由第一终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分第一终端功能的逻辑模块或软件实现。下面以该方法由第一终端执行为例进行描述。
该方法包括：第一终端确定用于进行侧行链路传输的信道占用时间COT；第一终端使用该COT中的第一资源发送第一传输块，第一传输块包括第一指示信息，第一指示信息指示初始该COT的终端是否授权其他终端共享该COT。
应理解，第一终端确定用于进行侧行链路传输的COT是指，第一终端通过第一类LBT接入信道获得该COT。第一类LBT可以是type 1 LBT。第一终端通过第一类LBT接入信道获得COT也可以称为第一终端初始该COT，第一终端为初始该COT的终端。
在一个示例中，第一传输块中的SCI 1或SCI 2包括第一指示信息。
根据本申请提供的无线通信方法，第一终端通过在传输块中携带指示信息指示是否授权共享该COT，使得其他终端可以根据该指示信息确定COT是否授权被共享，若COT被授权共享，则其他终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第一传输块还包括该COT中可被共享的资源的信息和/或第一CAPC，第一CAPC为第一终端在初始该COT时所采用的CAPC。
第一CAPC指示目标传输块对应的业务的CAPC优先级。初始该COT的终端初始该COT是为了发送目标传输块。另外，根据第一传输块的CAPC，还可以确定该COT对应的最大信道占用时间MCOT。该COT对应的MCOT也可以称为该COT的总共时长。
示例性的，如果待传输的传输块对应的CAPC指示的优先级大于或等于第一CAPC指示的优先级的情况下，该传输块的发送方确定可以共享该COT。
示例性的，第一CAPC或者该COT中可被共享的资源的信息还用于其他终端确定该COT中的可被共享的资源。
第五方面，提供了一种无线通信方法，该方法可以由第二终端执行，也可以由第二终端的部件(例如处理器、芯片、或芯片系统等)执行，还可以由能实现全部或部分第二终端功能的逻辑模块或软件实现。下面以该方法由第二终端执行为例进行描述。
该方法包括：第二终端在COT中的第一资源上检测到来自初始该COT的终端的第一传输块，第一传输块包括第一指示信息，第一指示信息指示初始该COT的终端是否授权其他终端共享该COT；第二终端根据第一指示信息，通过共享该COT或该COT关联的COT发送第二传输块。
应理解，初始该COT的终端是指通过第一类LBT接入信道获得该COT的终端。第一类LBT可以是type 1 LBT。第二终端通过共享该COT或该COT关联的COT发送第二传输块是指，第二终端通过第二类LBT接入信道并使用该COT或该COT关联的COT中的资源发送第二传输块。第二类LBT可以是type 2 LBT。
还应理解，第一传输块的接收端可以包括第二终端，也可以不包括第二终端。该COT关联COT是指与该COT相隔若干个业务周期的COT，并且，这两个COT对应的信道相同。
在一个示例中，第一传输块中的侧行链路控制信息(sidelinkcontrolinformation，SCI)1或SCI2包括第一指示信息。
根据本申请提供的无线通信方法，第一终端通过在传输块中携带指示信息指示是否授权共享该COT，使得其他终端可以根据该指示信息确定COT是否授权被共享，若COT被授权共享，则其他终端有机会共享该COT，从而有利于提高接入信道的概率。
在一些可能的实现方式中，第一传输块还包括该COT中可被共享的资源的信息和/或第一CAPC，第一CAPC为初始该COT的终端在初始该COT时所采用的CAPC。
在一些可能的实现方式中，在第二终端通过共享该COT或该COT关联的COT发送第二传输 块之前，该方法还可以包括：第二终端根据该COT中可被共享的资源的信息和/或第一CAPC，确定该COT中的第二资源或该COT关联的COT中的第二资源；其中，第二终端通过共享该COT或该COT关联的COT发送第二传输块，包括：第二终端在该COT中的第二资源上，通过共享该COT发送第二传输块。或者，第二终端在该COT关联的COT中的第二资源上，通过共享该COT关联的COT发送第二传输块。
在一些可能的实现方式中，第二终端根据该COT中可被共享的资源的信息和/或第一CAPC，确定该COT中的第二资源或该COT关联的COT中的第二资源，包括：第二终端的物理层根据该COT中可被共享的资源的信息和/或第一CAPC，向第二终端的媒体接入控制(medium accesscontrol，MAC)层上报资源指示信息，该资源指示信息指示该COT内可被共享的资源、该COT内可被共享的资源与资源选择窗的交集、或者该COT内可被共享的资源与候选资源集合的交集；第二终端的MAC层根据资源指示信息，确定该COT中的第二资源或该COT关联的COT中的第二资源。
第六方面，提供了一种通信装置，包括用于执行上述任一方面或上述任一方面中任一种可能实现方式中的方法的模块或单元。
第七方面，提供了一种通信装置，包括处理器，处理器与存储器耦合，存储器用于存储计算机程序或指令，处理器用于执行存储器存储的计算机程序或指令，以实现上述任一方面或上述任一方面中任一种可能实现方式中的方法。
在一种可能的实现方式中，该装置还包括与处理器耦合的存储器。
在一种可能的实现方式中，处理器为一个或多个，和/或，存储器为一个或多个。
在一种可能的实现方式中，存储器可以与处理器集成在一起，或者存储器与处理器分离设置。
在一种可能的实现方式中，该装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该装置为终端。示例性的，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该装置为终端的芯片。示例性的，该通信接口可以是输入/输出接口。
第八方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。该处理电路用于通过该输入电路接收信号，并通过该输出电路发射信号，使得该处理器执行上述任一方面或任一方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请对处理器及各种电路的具体实现方式不做限定。
第九方面，提供了一种通信系统，包括前述第一终端、第二终端和第三终端中的一种或多种。
第十方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述任一方面或任一方面中任一种可能实现方式中的方法。
第十一方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)，当计算机程序在计算机上运行时，使得计算机执行上述任一方面或任一方面中任一种可能实现方式中的方法。
第十二方面，提供了一种芯片，包括处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的通信装置执行上述任一方面或任一方面中任一种可能实现方式中的方法。
附图说明
图1是本申请实施例提供的一例通信系统的示意图；
图2是本申请提供的一种无线通信方法的示意性流程图；
图3是本申请提供的一种资源选择示意图；
图4是本申请提供的一种无线通信方法的示意性流程图；
图5是本申请提供的一种无线通信方法的示意性流程图；
图6是本申请提供的一种无线通信方法的示意性流程图；
图7是本申请提供的一种无线通信方法的示意性流程图；
图8是本申请实施例提供的一种通信装置的示意性框图；
图9是本申请实施例提供的另一种通信装置的示意性框图；
图10是本申请实施例提供的一例终端的示意性结构图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
应理解，本申请中，“在……情况下”、“如果……”、“当……时”、“若……”等类似的描述可以替换使用。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、第五代(5th Generation，5G)移动通信系统、新无线(New Radio，NR)以及未来可能出现的其他移动通信系统等。
示例性的，本申请实施例的技术方案可以应用于终端之间(device to device，D2D)直连通信。比如，车车通信(vehicle to vehicle，V2V)、车人通信(vehicle to pedestrian，V2P)、车-网络(vehicle to network，V2N)业务、或者车与基础设施通信(vehicle to infrastructure，V2I)等。又如，室内商用场景中，如手机与智慧屏通信，手机与VR眼镜通信等。
本申请实施例中的终端可以指(user equipment，UE)、站点(station)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、大屏、车载设备、可穿戴设备，5G网络中的终端或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端等，本申请实施例对此并不限定。另外，本申请实施例涉及的多个终端的类型可以相同也可以不同，比如该多个终端都为手机，或者一个为手机，一个为笔记本电脑。
在本申请实施例中，终端包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端或网络设备，或者，是终端或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器 件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
图1示出了适用于本申请的一种通信系统的示意性框图。参见图1，该系统100中包括两种通信接口，即PC5接口和Uu接口。其中，PC5接口是两个终端(例如图中所示终端110和终端120、或者终端110和终端130)之间直连通信接口，终端之间的直连通信链路也被定义为侧行链路或侧链(sidelink，SL)。Uu接口是终端(例如，终端110或终端120)与网络设备140之间通信的接口。
应理解，图1所示的通信系统中还可以包括更多的网络节点，例如更多的终端或网络设备，本申请实施例在图中不再一一示出。
在图1所示的系统中，终端110在发送前可以通过第一类LBT(比如，type 1 LBT)对信道进行监测。若确认信道空闲，终端110将在一段时间内获得信道的使用权，这一段时间可称为信道占用时间(channel occupancy time，COT)。此时，称终端110为初始该COT的终端。
初始COT的终端(即，终端110)可以在该COT上发送或接收数据。另外，如果满足下述要求，终端110可以将该COT共享给终端120和/或终端130使用：(1)终端110可以获知终端120和/或终端130可以共享自己抢占的COT。比如，在一些场景下，如果终端120和/或终端130的传输的接收端包括终端110，终端120和/或终端130才可以共享终端110抢占的COT；(2)终端110具备对时频资源进行分配的能力，即终端需要指定哪些资源由哪个终端使用。在SL系统中，终端110很难有全局信息以及对时频资源的调度能力，因此很难满足上述要求。如果不能满足上述要求，则终端110将无法将COT共享给终端120和/或终端130。从而，终端120和/或终端130只能通过type 1 LBT接入信道，而不能通过第一类LBT(比如，type 2 LBT)接入信道，导致接入信道的概率较低。
应理解，通过第一类LBT进行信道侦听的时长一般比通过第二类LBT进行信道侦听时长较长。本申请中以第一类LBT为type 1 LBT，第二类LBT为type 2 LBT为例进行说明。
有鉴于此，本申请提供了一种无线通信方法。该方法中，初始COT的终端允许其他终端共享COT，其他终端自行决定是否共享COT。具体地，初始COT终端在传输块中指示初始COT的终端，其他终端可以检测到该传输块，并可以根据传输块的指示确定初始COT的终端。如果其他终端的接收端包括初始COT的终端，则可以共享COT，或者在满足一定条件时可以共享COT。那么，其他终端将可以通过type 2LBT接入信道，从而可以提高接入信道的概率。
应理解，type 1 LBT和type 2 LBT在不同协议、不同版本或者不同系统中可能命名有所不同，本申请中的type 1 LBT和type 2 LBT可以替换为与其他含义相同的其他名称。
下面对本申请提供的方案进行详细说明。下文描述的方法200、400、500和600中，第一终端为初始COT终端，第二终端和第三终端的接收端包括第一终端，即，第二终端和第三终端与第一终端具有收发关系。下文描述的方法700中，第一终端为初始COT终端，第二终端的接收端可以包括第一终端，也可以不包括第一终端。示例性的，第一终端可以是图1中的终端110，第二终端和第三终端可以分别是图1中的终端120和终端130。
下面结合相应流程图，对本申请提供的方案进行详细说明。可以理解，本申请提供的示意性流程图中主要以不同终端作为该交互示意的执行主体为例来示意该方法，但本申请并不限制交互示意的执行主体。例如，示意性流程图中的终端(比如，第一终端、第二终端或第三终端)也可以是支持该终端实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分终端功能的逻辑模块或软件。
图2是本申请提供的一种无线通信方法的示意性流程图。该方法200可以包括S210至S240。
S210，第一终端确定用于进行侧行链路传输的COT。
第一终端可以通过type 1 LBT对信道进行监测，若确认信道空闲，则可以获得在一段时间内对信道的使用权，即可以确定该COT。下文中为便于理解和描述，将第一终端获得使用权的信道记作：目标信道。
应理解，第一终端通过type 1 LBT接入(或抢占)信道获得该COT，也可以称为第一终端初始该COT，第一终端为初始该COT的终端。
S220，第一终端使用该COT中的第一资源发送第一传输块。
相应地，第二终端可以在该COT中的第一资源上检测到第一传输块。第二终端可以是第一传输块的接收端或其中一个接收端，也可以不是第一传输块的接收端。第一资源可以包括第二终端获得目标信道使用权后的一个或多个时隙或一个或多个符号。
应理解，第一传输块可以是目标传输块，也可以不是目标传输块。第一终端初始该COT的目的是为了发送目标传输块。
其中，第一传输块可以包括第一指示信息，第一指示信息用于指示初始COT的终端，即，根据第一指示信息，可以确定初始COT的终端。
第一传输块可以包括物理侧行链路共享信道(physical sidelinkshare channel，PSSCH)和物理侧行链路控制信道(physical sidelinkcontrolchannel，PSCCH)。其中，PSCCH包括第一部分侧行链路控制信息(sidelinkcontrolinformation，SCI)，即SCI 1，PSSCH包括第二部分侧行链路控制信息(sidelinkcontrolinformation，SCI)，即SCI 2。
在一个示例中，第一指示信息可以包含在PSCCH中。比如，第一指示信息可以包含在SCI 1中。
在另一个示例中，第一指示信息可以包含在PSSCH中。比如，第一指示信息可以包含在SCI2中，或者，第一指示信息可以包含在PSSCH的媒体接入控制单元(mediumaccesscontrolcontrolelement，MAC CE)中。
应理解，第一指示信息也可以包含在PSCCH或PSSCH的其他部分中，本申请对承载第一指示信息的信道或信息不作限定。
需要说明的是，本申请提供的各实施例中涉及的第一资源、第二资源和第三资源均为时频资源，即第一资源、第二资源和第三资源对应的频率资源属于目标信道，第一资源对应的时域资源属于该COT，第二资源或第三资源对应的时域资源属于该COT或属于该COT关联的COT，并且，第一资源、第二资源和第三资源对应的时频资源没有重叠。
S230，第二终端根据第一传输块中的第一指示信息，确定第二传输块的接收端是否包括第一终端。
S240，第二终端通过共享该COT或该COT关联的COT发送第二传输块。
应理解，本申请中，共享COT是指通过type 2LBT接入目标信道。
在一些实施例中，如果第二传输块的接收端包括第一终端，则第二终端可以通过共享该COT或该COT关联的COT发送第二传输块。
在另一些实施例中，如果第二传输块的接收端包括第一终端，且第二终端满足其他可共享该COT的条件，则第二终端可以通过共享该COT发送第二传输块。或者，如果第二传输块的接收端包括第一终端，且第二终端满足其他可共享该COT关联的COT的条件，比如第二传输块对应的CAPC满足要求，则第二终端可以通过共享该COT关联的COT发送第二传输块。
本申请各实施例涉及的该COT关联的COT是指：与该COT具有周期关系的COT，即该COT和该COT关联的COT二者相距一个或多个业务周期。在本申请涉及该COT关联的COT的内容中，COT内的业务具有相同的周期。
在一种实现方式中，第一传输块还可以包括第一CAPC和/或该COT中可被共享的资源的信息。
第一CAPC表示第一终端初始该COT时所采用的CAPC，即，第一CAPC为为目标传输块对应的业务的CAPC优先级。
第一CAPC为一个数值，该数值越大，表示优先级越低。如果规定或要求对应的CAPC优先级低的传输块不能共享对应的CAPC优先级高的传输块的发送方所初始的COT，那么，若第二传输块对应的CAPC优先级比第一CAPC优先级高，或者，第二传输块对应的CAPC优先级和第一CAPC优先级相同，则第二终端可以共享该COT，否则，第二终端不能共享该COT。
第一CAPC除表示目标传输块对应的优先级以外，还可以用于确定该COT对应的最大信道占 用时间(maximum channel occupancy time，MCOT)，例如可以是3ms、4ms、8ms或者10ms等。也就是说，根据第一CAPC，可以获知该COT的总共时长，该总共时长即为MCOT。应理解，COT的总共时长，可以采用绝对时间单位表示，如毫秒，也可以采用时隙数量表示，或者还可以采用其他可以确定COT的总共时长的信息表示，比如符号数量。
该COT中可被共享的资源的信息可以指示该COT中可被共享的时域资源、或频域资源、或时域资源以及频域资源。
比如，该COT中可被共享的资源的信息可以包括该COT的总共时长。那么，除第一传输块占用的时间(即，时域资源)外，该COT内的其他时间以及该时间对应的频域资源都可以被共享。
或者，该COT中可被共享的资源的信息可以包括该COT中可被共享的部分时长或不能被共享的部分时长。比如，该COT中可被共享的资源的信息包括可被共享的时域资源的起始位置和结束位置，或者包括可被共享的时域资源的起始位置和可被共享的时域资源的持续时间。
比如，该COT中可被共享的资源的信息可以包括目标信道的带宽，那么，该目标信道对应的频段都可以被共享。
或者，该COT中可被共享的资源的信息可以包括目标信道中可被共享的频域资源的信息或不可被共享的频域资源。比如，可被共享的频域资源的信息包括可被共享的频域资源的起始位置和结束位置，或者包括可被共享的频域资源的起始位置和可被共享的频域资源的带宽。
总之，根据第一传输块中的该COT中可被共享的资源的信息，第二终端可以确定该COT中哪些资源可以被共享或哪些资源不能被共享。
在一个示例中，第一传输块可以仅包括第一CAPC而不包括该COT中可被共享的资源的信息。在此情况下，第二终端可以确定在时域上除第一传输块占用的时间(即，时域资源)外，该COT内的其他时间都可以被共享，且在频域上可以共享整个目标信道。
在另一个示例中，第一传输块可以仅包括该COT中可被共享的资源的信息而不包括第一CAPC。该方案可以应用在不对可以共享该COT的业务的CAPC优先级进行限制的场景下。
在又一个示例中，第一传输块可以同时包括第一CAPC和该COT中可被共享的资源的信息。该方案可以应用在对可以共享该COT的业务的CAPC优先级进行限制，且其他终端仅能共享该COT的剩余时间中的部分时间和/或其他终端仅能共享目标信道中的部分频域资源的场景下。应理解，该COT的剩余时间为该COT中除第一传输块占用的时间以外的其他时间。
综上，一方面，如果对可以共享该COT的业务的CAPC优先级进行限制，那么第二终端可以根据第一传输块中的第一CAPC确定是否可以共享该COT。另一方面，第二终端可以根据第一传输块中的第一CAPC或该COT中可被共享的资源的信息，确定该COT中可被共享的资源，该资源包括时域资源和频域资源，即时频资源。
在一些实施例中，第二终端可以根据第一传输块中的第一CAPC或该COT中可被共享的资源的信息，确定该COT中的第二资源，并在该COT中的第二资源上通过共享该COT发送第二传输块。比如，该方案可以应用于资源感知窗和资源选择窗都包括该COT的一部分的场景中。
示例性的，第二终端的物理层可以首先根据第一CAPC或该COT中可被共享的资源的信息，确定该COT中可被共享的资源，例如记作：资源#A。然后，第二终端再确定资源#A中属于资源选择窗内的候选资源集合中的资源，例如记作：资源#B。其中，候选资源集合是第二终端根据现有协议，对资源选择窗内的资源进行排除后得到的用于向高层上报的资源集合。第二终端依照上述方法确定资源#B后，向MAC层上报资源#B，比如上报资源#B对应的资源标识(如，TRIV/FRIV)。
或者，第二终端的物理层可以根据资源#A，确定资源选择窗中属于资源#A的资源，例如记作：资源#C；然后物理层向MAC层上报资源#C，如上报资源#C包括的资源标识，MAC层再确定属于资源选择窗内的候选资源集合且属于资源#C的资源，即资源#B。
或者，第二终端的物理层可以向MAC层上报资源#A，MAC层再结合资源#A和资源选择窗内的候选资源集合，确定资源#B。
在确定资源#B后，第二终端，比如第二终端的MAC层，可以从资源#B中选择第二资源来传输第二传输块。比如，可以(预)配置资源选择的权重，该权重为是否可以共享COT的函数。对于参考信号接收能量(reference signal receiving power，RSRP)较低且可以共享COT的资源，选 择的权重将较高。那么，第二终端将会倾向于选择RSRP较小且可以共享COT的资源。RSRP较小的资源干扰较小，传输的性能较好。
应理解，所述的资源#A、#B、#C都可以是资源集合，包括至少一个时频资源。
例如，参见图3中的(a)所示的资源选择示意图。在时隙0上，第一终端通过type 1 LBT在信道#1(即，目标信道)上获得的COT的总共时长为8ms，即该COT包括时隙0-7，第一终端在时隙0上发送第一传输块。其中，资源感知窗中属于该COT的资源为时隙0-2，资源选择窗中属于该COT的资源为时隙6-7，资源选择窗中的候选资源集合在频域上包括信道#1和信道#2，在时域上包括时隙6-7。那么，若资源#A为由时隙1-7和信道#1构成的时频资源，那么资源#B为由时隙6-7和信道#1构成的时频资源，资源#C和资源#B相同。
在另一些实施例中，第二终端可以根据第一传输块中的第一CAPC或该COT中可被共享的资源的信息，确定该COT关联的COT中的第二资源，并在该COT关联的COT中的第二资源上通过共享该COT发送第二传输块。比如，该方案可以应用于资源感知窗包括该COT的部分或全部，资源选择窗与该COT没有交集的场景。
确定该COT关联的COT中的第二资源与确定该COT中的第二资源的方式类似，可以参考上文对确定该COT中的第二资源的相应描述。比如，第二终端可以首先根据第一CAPC或该COT中可被共享的资源的信息，确定该COT关联的COT中可被共享的资源，例如记作：资源#A。然后，第二终端再确定资源#A中属于资源选择窗内的候选资源集合的资源，例如记作：资源#B。在确定资源#B后，第二终端，比如第二终端的MAC层，可以从资源#B中选择第二资源。
在该方案中，进一步地，在发送第二传输块之前，第二终端还可以在第二资源对应的时域资源的起始时刻的前一个时隙在目标信道上检测传输块，或者，第二终端可以在该COT关联的COT的第一个时隙在目标信道上检测传输块。如果根据检测到的传输块，确定第二终端可以通过type 2LBT接入信道，则通过type 2 LBT接入信道，并使用第二资源传输第二传输块。比如，若根据该传输块可以确定第二传输块的接收端包括初始该COT关联的COT的终端，该COT的总共时长为2个时隙，而第二终端的传输需要1个时隙，且第一CAPC优先级低于该传输块对应的CAPC优先级，则第二终端可以通过type 2 LBT接入信道。若根据该传输块确定第二终端不可以通过type 2LBT接入信道，比如第二传输块的接收端不包括初始该COT关联的COT的终端，则第二终端不能以type 2 LBT接入信道(即，不能共享COT)，只能以type 1 LBT接入信道。
例如，参见图3中的(b)，COT#2为COT#1关联的COT，COT#1和COT#2两者之间间隔了若干个业务周期。第一终端通过type 1 LBT在信道#1(即，目标信道)上获得的COT#1的总共时长为2ms，即该COT#1包括某一子帧的时隙2和时隙3。在资源选择窗内，COT#2为另一子帧的时隙3和时隙4。若资源#A为资源感知窗内由信道#1和时隙#3构成的时频资源，候选资源集合在时域上包括资源选择窗中的时隙3和时隙4，在频域上包括信道#1，那么可以确定资源#B为由资源选择窗中的时隙4和信道#1构成的时频资源。如果第二终端根据在资源选择窗中的时隙#3上检测到的传输块确定可以使用第二传输资源，那么第二终端可以在资源#B进行type 2LBT，若LBT成功，则第二终端可以使用资源选择窗中的时隙4传输第二传输块。
应理解，本申请仅以1个时隙为1ms为例进行说明，时隙所占时长具体根据子载波间隔确定。
在一些实施例中，第二传输块可以包括COT中可被共享的资源的信息和/或所述第一CAPC。
需要说明的是，第二传输块携带的COT中可被共享的资源的信息和第一传输块中携带的COT中可被共享的资源的信息可能不同。例如，若COT中可被共享的资源的信息指示除当前时隙外，该COT剩余的时长，那么第二传输块中携带的COT中可被共享的资源的信息所指示的COT剩余的时长不包括第二终端已经使用的该COT中的时长。比如，第一传输块携带的COT中可被共享的资源的信息指示剩余的COT的时长为6个时隙，第二终端使用了该COT中的2个时隙，那么第二传输块中携带的COT中可被共享的资源的信息指示剩余的COT的时长为4个时隙。
综上，根据本申请提供的无线通信方法，初始COT的终端通过在传输块中携带指示信息指示初始COT的终端，使得其他终端可以根据该指示信息确定其接收端是否包括该初始COT。如果其他终端的接收端包括初始COT，则有机会共享该COT，即有机会通过type 2的LBT接入信道，从而能够提高接入信道的概率。
下面结合图4和图5，对方法200的两种具体实现方式进行说明。
图4是本申请提供的一种无线通信方法的示意性流程图。该方法400可以包括S410至S450。
S410，第一终端向至少一个关联终端发送第一终端对应的至少一组标识。该至少一组标识包括下文中描述的第一源标识。每组标识包括至少一个源标识(Source ID)和至少一个目的标识(Destination ID)。
比如，第一终端可以通过单播、组播或者广播的形式发送该至少一组标识。
其中，该至少一个关联终端为与第一终端具有收发关系的终端。具体来讲，该至少一组标识中的任意一个源标识对应一个业务，并且，第一终端为该业务的发送端。该至少一组标识中的任意一个目的标识对应一个业务，并且，第一终端为该业务的接收端。
在本申请中，该至少一个终端包括第二终端和第三终端。那么，相应地，第二终端和第三终端可以接收该至少一组标识。
除此之外，第二终端也可以向与其具有收发关系的至少一个关联终端发送第二终端对应的至少一组标识。类似地，第三终端也可以向与其具有收发关系的至少一个关联终端发送第三终端对应的至少一组标识。第三终端与第二终端可以具有收发关系，也可以不具有收发关系。
假设还存在一个第四终端，第四终端与第二终端具有收发关系，并且第四终端也可以向与其具有收发关系的至少一个关联终端发送第四终端对应的至少一组标识。那么，第二终端除接收到第一终端发送的至少一组标识外，还接收到第四终端发送的至少一组标识。其中，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端。即，属于第一终端发送的至少一组标识的标识对应第一终端，属于第四终端发送的至少一组标识的标识对应第四终端。
示例性的，终端可以将对应同一终端的标识(包括源标识和目的标识)用某一数据结构(如表格)存储在本地。例如，第二终端可以将第一终端对应的至少一组标识存储在一张表格中，将第四终端对应的至少一组标识存储在另一张表格中。
例如，参见下述表格一和表格二。表格一为第一终端对应的源标识和目的标识，表格二为第四终端对应的源标识和目的标识。
表格一
表格二
可以理解，第二终端可以根据标识是否属于同一张表格，确定对应的终端是否为同一终端。
应理解，表格一和表格二可以包括单播业务的标识，也可以包括组播业务的标识。
S420，第一终端确定用于进行侧行链路传输的COT。
该步骤与S210相同，可以参考S210。
S430，第一终端使用该COT中的第一资源发送第一传输块。
该步骤为S220的一种具体实现方式。
其中，第一传输块包括第一源标识和第一指示信息，第一指示信息指示第一源标识对应的终端为初始COT的终端。
应理解，第一源标识可以包含在SCI2中。
S440，第二终端根据第一传输块中的第一指示信息和第一源标识，确定第二传输块的接收端是否包括第一终端。
具体地，第二传输块包括第一目的标识，第二终端可以根据第一指示信息、第一源标识、第一目的标识、以及第二终端接收的至少一组标识，确定第二传输块的接收端是否包括初始COT的 终端。
更具体地，第二终端可以确定第一源标识和第一目的标识是否属于第二终端接收的至少一组标识中的同一组标识。若第一源标识和第一目的标识属于第二终端接收的至少一组标识中的同一组标识，则可以确定第二传输块的接收端包括初始COT的终端。若第一源标识和/或第一目的标识不属于第二终端接收的至少一组标识，或者，若第一源标识和第一目的标识属于第二终端接收的至少一组标识，且第一源标识和第一目的标识不属于同一组标识，则可以确定第二传输块的接收端不包括初始COT的终端。
比如，第一源标识为表格一中的“00000010”，第一目的标识为“0000000000000100”，第一目的标识也在表格一中，因此可以确定第一目的标识对应初始COT的终端，即第一目的标识对应的业务的接收端包括第一终端，从而可以确定第二传输块的接收端包括第一终端。
应理解，第二终端接收的至少一组标识包括第一终端发送的至少一组标识。在存在前文描述的第四终端的情况下，第二终端接收的至少一组标识还包括第四终端发送的至少一组标识。第四终端可以与第一终端相同，也可以不同。
应理解，由于表格一中可以包含组播业务的标识，因此可能得出第二传输块的接收端可以大于1个终端，且包括第一终端，如目的标识“0000000000000110”可以是组播业务的标识。
S450，第二终端通过共享该COT发送第二传输块。
该步骤可以参考S240。
基于该方案，第二终端可以根据提前获得的与终端对应的标识信息、第一传输块中的第一源标识和第一指示信息、以及第二传输块中的第一目的标识，确定第二传输块的接收端是否包括第一终端。在第二传输块的接收端包括第一终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
图5是本申请提供的一种无线通信方法的示意性流程图。该方法500可以包括S510至S550。
S510，第一终端向至少一个关联终端发送一组标识，该组标识包括第一终端的侧行链路标识和第一终端对应的至少一个目的标识。
比如，第一终端可以通过单播、组播或者广播的形式发送第一终端的侧行链路标识和第一终端对应的至少一个目的标识。该侧行链路标识可以是第一终端的某一个单播业务的源标识或者目的标识。
其中，该至少一个关联终端为与第一终端具有收发关系的终端。具体来讲，该第一终端的侧行链路标识对应一个单播业务，并且，第一终端为该单播业务的发送端或接收端。该至少一组标识中的任意一个目的标识对应一个业务，并且，第一终端为该业务的接收端。
在本申请中，该至少一个终端包括第二终端和第三终端。那么，相应地，第二终端和第三终端可以接收第一终端的侧行链路标识和第一终端对应的至少一个目的标识。
除此之外，第二终端也可以向与其具有收发关系的至少一个关联终端发送第二终端的侧行链路标识和第二终端对应的至少一个目的标识。类似地，第三终端也可以向与其具有收发关系的至少一个关联终端发送第三终端的侧行链路标识和第三终端对应的至少一个目的标识。第三终端与第二终端可以具有收发关系，也可以不具有收发关系。
假设还存在一个第四终端，第四终端与第二终端具有收发关系，并且第四终端也可以向与其具有收发关系的至少一个关联终端发送第四终端的侧行链路标识和第四终端对应的至少一个目的标识。那么，第二终端除接收到第一终端的侧行链路标识和第一终端对应的至少一个目的标识外，还接收到第四终端的侧行链路标识和第四终端对应的至少一个目的标识。其中，一个终端发送的侧行链路标识和至少一个目的标为一组标识，属于同一组的标识对应一个终端。即，属于第一终端发送的一组标识中的标识对应第一终端，属于第四终端发送的一组标识中的标识对应第四终端。
示例性的，终端可以将对应同一终端的一组标识(包括侧行链路标识和至少一个目的标识)用某一数据结构(如表格)存储在本地。例如，第二终端可以将第一终端对应的一组标识存储在一张表格中，将第四终端对应的一组标识存储在另一张表格中。
例如，参见下述表格三和表格四。表格三为第一终端对应的侧行链路标识和至少一个目的标识，表格四为第四终端对应的侧行链路标识和至少一个目的标识。
表格三
表格四
可以理解，第二终端可以根据标识是否属于同一张表格，确定对应的终端是否为同一终端。
应理解，表格三和表格四可以包括单播业务的标识，也可以包括组播业务的标识。
S520，第一终端确定用于进行侧行链路传输的COT。
该步骤与S210相同，可以参考S210。
S530，第一终端使用该COT中的第一资源发送第一传输块。
该步骤为S220的一种具体实现方式。
具体地，第一传输块中的第一指示信息为初始COT的终端的侧行链路标识，即第一终端的侧行链路标识。
应理解，第一传输块还包括第一传输块对应业务的发送端，即第一源标识。
S540，第二终端根据第一传输块中的侧行链路标识，确定第二传输块的接收端是否包括第一终端。
第二传输块包括第一目的标识，第二终端可以根据第一终端的侧行链路标识、第一目的标识、以及第二终端接收的至少一组标识，确定第二传输块的接收端是否包括初始COT的终端。
具体地，第二终端可以确定第一终端的侧行链路标识和第一目的标识是否属于第二终端接收的至少一组标识中的同一组标识。若第一终端的侧行链路标识和第一目的标识属于第二终端接收的至少一组标识中的同一组标识，则可以确定第二传输块的接收端包括初始COT的终端。若第一终端的侧行链路标识和/或第二传输块中的第一目的标识不属于第二终端接收的至少一组标识，或者，若第一终端的侧行链路标识和第二传输块中的第一目的标识属于第二终端接收的至少一组标识，且第一终端的侧行链路标识和第二传输块中的第一目的标识不属于同一组标识，则可以确定第二传输块的接收端不包括初始COT的终端。
比如，第一终端的侧行链路标识为表格三中的“00000001”，第一目的标识为“0000000000000110”，“0000000000000110”在表格三中，则可以确定第一目的标识对应初始COT的终端，即第一目的标识对应的业务的接收端包括第一终端，从而可以确定第二传输块的接收端包括第一终端。
应理解，第二终端接收的至少一组标识包括第一终端发送的一组标识。在存在前文描述的第四终端的情况下，第二终端接收的至少一组标识还包括第四终端发送的一组标识。第四终端可以与第一终端相同，也可以不同。
应理解，由于表格三中可以包含组播业务的标识，因此可能得出第二传输块的接收端可以大于1个终端，且包括第一终端，如目的标识“0000000000000011”可以是组播业务的标识。
S550，第二终端通过共享该COT发送第二传输块。
该步骤可以参考S240。
基于该方案，第二终端可以根据提前获得的与终端对应的标识信息、初始COT的终端的侧行链路标识以及第二传输块中的第一目的标识，确定第二传输块的接收端是否包括第一终端。在第二传输块的接收端包括第一终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
应理解，如果第三终端也是第一传输块的接收端，或者，虽然第三终端不是第一传输块的接收端，但是第三终端也可以检测到第一传输块并获得第一传输块中的相关信息(比如，第一源标 识和第一指示信息，或者初始COT的终端的侧行链路标识)，那么第三终端也可以确定其将要发送的第三传输块的接收端是否包括第一终端。如果第三传输块的接收端包括第一终端，那么第三终端也有机会共享该COT。
如果第三终端无法检测到第一传输块，从而无法获得第一传输块中的相关信息(比如，第一源标识和第一指示信息，或者初始COT的终端的侧行链路标识)，那么，第三终端还可以根据下文中描述的方法600确定第三传输块的接收端是否包括第一终端。
应理解，方法600可以在方法200中的步骤S240之后执行。另外，关于方法600中出现的与前文相同的概念，均可以参考前文中相应描述，方法600中不再赘述。
图6是本申请提供的一种无线通信方法的示意性流程图。该方法600可以包括S610至S630。
S610，第三终端在该COT中的第二资源上检测到来自第二终端的第二传输块。
应理解，第二传输块的接收端可以包括第三终端，也可以不包括第三终端。
其中，第二传输块包括第二指示信息，第二指示信息指示初始COT的终端。
与第一指示信息类似，例如，第二指示信息可以包含在SCI2或SCI1中。
应理解，S610也是第二终端发送第二传输块的步骤，S610和S240可以为同一步骤。为便于理解第三终端也可以获得第二传输块中的部分或全部信息，本申请实施例在方法600中引入了步骤S610，但应理解，该步骤的引入并不应对本申请方案构成任何限定。
S620，第三终端根据第二指示信息，确定第三传输块的接收端是否包括第一终端。
在一种实现方式中，与前文中的方法400类似，第三终端也可以提前接收与第三终端具有收发关系的终端发送的至少一组标识。同一组标识对应一个终端，任意一组标识包括至少一个源标识和至少一个目的标识。
并且，第二传输块可以包括第一目的标识。第二指示信息可以指示第一目的标识对应的终端为初始COT的终端。
示例性的，第三传输块包括第二目的标识。第三终端可以根据第二指示信息、第一目的标识、第二目的标识、以及第三终端接收的至少一组标识，确定第三传输块的接收端是否包括初始COT的终端。
具体地，第三终端可以确定第一目的标识和第二目的标识是否属于第三终端接收的至少一组标识中的同一组标识。若第一目的标识和第二目的标识属于第三终端接收的至少一组标识中的同一组标识，则可以确定第三传输块的接收端包括初始COT的终端。若第一目的标识和/或第二目的标识不属于第三终端接收的至少一组标识，或者，若第一目的标识和第二目的标识属于第三终端接收的至少一组标识，且第一目的标识和第二目的标识不属于同一组标识，则可以确定第三传输块的接收端不包括初始COT的终端。
比如，第三终端接收了表格一中的内容并保存了表格一。若第一目的标识为表格一中的“0000000000000100”，第二目的标识为表格一中的“0000000000000101”，则可以确定第二目的标识对应初始COT的终端，即第二目的标识对应的业务的接收端为第一终端，从而可以确定第三传输块的接收端包括第一终端。
在另一种实现方式中，与前文中的方法500类似，第三终端也可以提前接收与第三终端具有收发关系的终端发送的至少一组标识。同一组标识对应一个终端，任意一组标识包括终端的侧行链路标识和至少一个目的标识。
并且，第二传输块中的第二指示信息为第一终端的侧行链路标识。也就是说，第二传输块中的侧行链路标识为初始COT的终端的侧行链路标识。
示例性的，第三传输块包括第二目的标识，第三终端可以根据第一终端的侧行链路标识、第二目的标识、以及第三终端接收的至少一组标识，确定第三传输块的接收端是否包括初始COT的终端。
具体地，第三终端可以确定第一终端的侧行链路标识和第二目的标识是否属于第三终端接收的至少一组标识中的同一组标识。若第一终端的侧行链路标识和第二目的标识属于第三终端接收的至少一组标识中的同一组标识，则可以确定第三传输块的接收端包括初始COT的终端。若第一终端的侧行链路标识和/或第二目的标识不属于第三终端接收的至少一组标识，或者，若第一终端 的侧行链路标识和第二目的标识属于第三终端接收的至少一组标识，且第一终端的侧行链路标识和第二目的标识不属于同一组标识，则可以确定第三传输块的接收端不包括初始COT的终端。
比如，第一终端的侧行链路标识为表格三中的“00000001”，第二目的标识为表格三中的“0000000000000011”，则可以确定第二目的标识对应初始COT的终端，即第二目的标识对应的业务的接收端为第一终端，从而可以确定第三传输块的接收端包括第一终端。
S630，第三终端通过共享该COT或该COT关联的COT发送第三传输块。
例如，第三终端可以通过该COT中的第三资源或该COT关联的COT中的第三资源发送第三传输块。
步骤S630与S240类似，可以参考S240。但需注意，在第三传输块携带COT中可被共享的资源的信息和/或第一传输块对应的CAPC的情况下，第三传输块携带的COT中可被共享的资源的信息和第二传输块中携带的COT中可被共享的资源的信息可能不同。例如，若COT中可被共享的资源的信息指示除当前时隙外，该COT剩余的时长，那么第三传输块中携带的COT中可被共享的资源的信息所指示的COT剩余的时长不包括第二终端已经使用的该COT中的时长。比如，第一传输块携带的COT中可被共享的资源的信息指示剩余的COT的时长为6个时隙，第二传输块中携带的COT中可被共享的资源的信息指示剩余的COT的时长为4个时隙，第三终端使用了该COT中的1个时隙，那么第三传输块中携带的COT中可被共享的资源的信息指示剩余的COT的时长为3个时隙。
应理解，关于如何确定发送第三传输块的资源，比如第三资源，也可以参考S240，此处不再赘述。
示例性的，第三传输块可以携带第三指示信息，第三指示信息指示初始COT的终端，比如第三指示信息可以指示第三传输块中的第二目的标识对应初始COT的终端，或者，第三指示信息为第三终端的侧行链路标识。
根据上述方案，第三终端在没有检测到初始COT的终端的传输块的情况下，可以根据与初始COT的终端具有收发关系的其他终端发送的传输块来确定即将传输的第三传输块的接收端是否包括初始COT的终端。在第三传输块的接收端包括初始COT的终端的情况下，第二终端有机会共享该COT，从而有利于提高接入信道的概率。
本申请还提供了一种无线通信方法，该方法可以使得终端确定COT是否能够被共享，若COT能够被共享，则终端有机会共享该COT，从而有利于提高接入信道的概率。下面结合图7对该方法700进行说明。
S710，第一终端确定用于进行侧行链路传输的COT。
第一终端可以通过type 1 LBT对信道进行监测，若确认信道空闲，则可以获得在一段时间内对信道的使用权，即可以确定该COT。
应理解，第一终端可以通过type 1 LBT接入信道获得该COT，也可以称为第一终端初始该COT，第一终端为初始该COT的终端。
S720，第一终端使用该COT中的第一资源发送第一传输块。
第二终端可以是第一传输块的接收端，也可以不是第一传输块的接收端。相应地，第二终端在该COT中的第一资源上检测到第一传输块。
其中，第一传输块可以包括第一指示信息，第一指示信息可以指示初始COT的终端是否授权其他终端共享该COT。
第一指示信息可以承载在第一传输块中的SCI1或SCI2中，也可以承载在其他部分，本申请对此不作限定。
在一些实施例中，第一传输块还可以包括第一CAPC和/或该COT中可被共享的资源的信息。
关于第一CAPC和该COT中可被共享的资源的信息的含义和作用可以参考方法200中在S240中相应的描述，这里不再赘述。
S730，第二终端根据第一传输块中的第一指示信息，确定初始COT的终端是否授权其他终端共享该COT。
S740，第二终端通过共享该COT或该COT关联的COT发送第二传输块。
如果第一指示信息指示初始COT的终端授权其他终端共享该COT，那么其他终端可自行判断是否共享该COT。比如，若其他终端满足其他可以共享该COT的条件，则可以共享该COT。比如满足其他可以共享该COT的条件可以包括满足可以共享该COT的业务的CAPC优先级。
在第一指示信息指示初始COT的终端授权其他终端共享该COT的情况下，可以参考前文对S240的描述来选择并使用传输这里的第二传输块的资源。但应注意，在方法700中，第二传输块的接收端可以不是第一终端，或者可以不包括第一终端。
根据本申请提供的无线通信方法，第一终端通过在传输块中携带指示信息指示是否授权共享该COT，使得其他终端可以根据该指示信息确定COT是否授权被共享，若COT被授权共享，则其他终端有机会共享该COT，从而有利于提高接入信道的概率。
对应于上述方法实施例给出的方法，本申请实施例还提供了相应的装置，所述装置包括用于执行上述实施例相应的单元或模块。所述模块可以是软件，也可以是硬件，或者是软件和硬件结合。
图8是本申请提供的一种通信装置800的示意图。该装置800可以包括：接口模块801和处理模块802。可选地，还可以包括存储模块803。
在一种可能的设计中，如图8中的一个或者多个模块可能由一个或者多个处理器来实现，或者由一个或者多个处理器和存储器来实现；或者由一个或多个处理器和收发器实现；或者由一个或者多个处理器、存储器和收发器实现，本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置，也可以集成。
所述装置800具备实现本申请实施例描述的终端(例如，第一终端、第二终端或第三终端)的功能，比如，所述装置800包括终端执行本申请实施例描述的终端涉及步骤所对应的模块或单元或手段(means)，所述功能或单元或手段(means)可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。详细可进一步参考前述对应方法实施例中的相应描述。
示例性的，本申请实施例中的装置800中各个模块可以用于执行上述方法实施例中第二终端所执行的操作。
在一种可能的实施方式中，装置800可包括接口模块801和处理模块802。处理模块802用于在信道占用时间COT中的第一资源上检测到来自初始所述COT的终端的第一传输块，所述第一传输块包括第一指示信息，所述第一指示信息指示初始所述COT的终端；接口模块801用于根据所述第一指示信息，通过共享所述COT或与所述COT关联的COT发送第二传输块，所述第二传输块的接收端包括初始所述COT的终端。
在上述装置800某些可能的实施方式中，处理模块802具体用根据所述第一指示信息，确定所述第二传输块的接收端是否包括初始所述COT的终端；在所述第二传输块的接收端包括初始所述COT的终端的情况下，所接口模块801通过共享所述COT或所述COT关联的COT发送所述第二传输块。
在上述装置800某些可能的实施方式中，所述第一传输块还包括所述COT中可被共享的资源的信息和/或所述第一CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC；其中，处理模块802还用于根据所述COT中可被共享的资源的信息和/或所述第一CAPC，确定所述COT中的第二资源或所述COT关联的COT中的第二资源；接口模块801具体用于在所述第二资源上通过共享所述COT发送所述第二传输块。
在上述装置800某些可能的实施方式中，处理模块802具体用于在物理层根据所述COT中可被共享的资源的信息和/或所述第一CAPC，向媒体接入控制MAC层上报下述中的一种：所述COT内可被共享的资源、所述COT内可被共享的资源与资源选择窗的交集、或者所述COT内可被共享的资源与候选资源集合的交集；在MAC层根据所述物理层上报的信息，确定所述COT中的第二资源或所述COT关联的COT中的第二资源。
在上述装置800某些可能的实施方式中，所述第一传输块还包括第一源标识，所述第一指示信息指示所述第一源标识对应的终端为初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第二传输块还包括第一目的标识；其中，接口 模块801还用于接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端；处理模块802具体用于根据所述第一指示信息、所述第一源标识、所述第一目的标识、以及所述至少一组标识，确定所述第二传输块的接收端是否包括初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第一指示信息包括初始所述COT的终端的侧行链路标识。
在上述装置800某些可能的实施方式中，所述第二传输块还包括第一目的标识；其中，接口模块801还用于接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端；处理模块802具体根据初始所述COT的终端的侧行链路标识、所述第一目的标识、以及所述至少一组标识，确定所述第二传输块的接收端是否包括初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第二传输块包括第二指示信息，所述第二指示信息指示初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第二传输块还包括第一目的标识，所述第二指示信息指示所述第一目的标识对应的终端为初始所述COT的终端；或者，所述第二指示信息包括初始所述COT的终端的侧行链路标识。
在上述装置800某些可能的实施方式中，所述第二传输块还包括所述COT中可被共享的资源的信息和/或所述第一CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC。
示例性的，本申请实施例中的装置800中各个模块可以用于执行上述方法实施例中第三终端所执行的操作。
在一种可能的实施方式中，装置800可包括接口模块801和处理模块802。处理模块802用于在信道占用时间COT中的第二资源上检测到来自第二终端的第二传输块，所述第二传输块包括第二指示信息，所述第二指示信息指示初始所述COT的终端；接口模块801用于根据所述第二指示信息，通过共享所述COT或所述COT关联的COT发送第三传输块，所述第三传输块的接收端包括初始所述COT的终端。
在上述装置800某些可能的实施方式中，处理模块802具体用于根据所述第二指示信息，确定所述第三传输块的接收端是否包括初始所述COT的终端；接收模块801具体用于在所述第三传输块的接收端包括初始所述COT的终端的情况下，通过共享所述COT或所述COT关联的COT发送所述第三传输块。
在上述装置800某些可能的实施方式中，所述第二传输块包括所述COT中可被共享的资源的信息和/或第一CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC，所述第一传输块来自初始所述COT的终端；其中，处理模块802还用于根据所述COT中可被共享的资源的信息和/或所述第一CAPC确定所述COT中的第三资源或所述COT关联的COT中的第三资源；其中，接收模块801具体用于在所述COT中的第三资源或所述COT关联的COT中的第三资源上，通过共享所述COT或所述COT关联的COT发送所述第三传输块。
在上述装置800某些可能的实施方式中，处理模块802具体用于在物理层根据所述COT中可被共享的资源的信息和/或所述第一CAPC，向媒体接入控制MAC层上报下述中的一种：所述COT内可被共享的资源、所述COT内可被共享的资源与资源选择窗的交集、或者所述COT内可被共享的资源与候选资源集合的交集；在MAC层根据所述物理层上报的信息，确定所述COT中的第三资源或所述COT关联的COT中的第三资源。
在上述装置800某些可能的实施方式中，所述第二传输块还包括第一目的标识，第二指示信息指示所述第一目的标识对应的终端为初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第三传输块包括第二目的标识；其中，接口模块801还用于接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端；处理模块802具体用于根据所述第二指示信息、所述第一目的标识、所述第二目的标识、以及所述至少一组标识，确定所述第三传输块的接收端是否包括初始所述COT 的终端。
在上述装置800某些可能的实施方式中，所述第二指示信息包括初始所述COT的终端的侧行链路标识。
在上述装置800某些可能的实施方式中，所述第三传输块还包括第二目的标识；其中，接口模块801还用于接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端；处理模块802具体用于根据初始所述COT的终端的侧行链路标识、所述第二目的标识、以及所述至少一组标识，确定所述第三传输块的接收端是否包括初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第三传输块包括第三指示信息，所述第三指示信息指示初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第三传输块还包括第二目的标识，所述第三指示信息指示所述第二目的标识对应的终端为初始所述COT的终端；或者，
所述第三指示信息包括所述初始所述COT的侧行链路标识。
在上述装置800某些可能的实施方式中，所述第三传输块还包括所述COT中可被共享的资源的信息和/或第一CAPC，所述第一CAPC为所述第一终端在初始所述COT时所采用的CAPC。
示例性的，本申请实施例中的装置800中各个模块可以用于执行上述方法实施例中第一终端所执行的操作。
在一种可能的实施方式中，装置800可包括接口模块801和处理模块802。处理模块802用于装置800确定用于进行侧行链路传输的信道占用时间COT；接口模块801用于使用所述COT中的第一资源发送第一传输块，所述第一传输块包括第一指示信息，所述第一指示信息指示初始所述COT的终端，所述装置800为初始所述COT的终端。
在上述装置800某些可能的实施方式中，所述第一传输块还包括所述装置800对应的第一源标识，所述第一指示信息指示所述第一源标识对应的终端为初始所述COT的终端；以及，接口模块801还用于向至少一个关联终端发送所述装置800对应的所述至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，所述至少一组标识包括所述第一源标识，所述至少一个关联终端为与所述装置800具有收发关系的终端。
在上述装置800某些可能的实施方式中，所述第一指示信息包括初始所述COT的终端的侧行链路标识；接口模块801还用于向至少一个关联终端发送所述装置800的侧行链路标识和所述装置800对应的至少一个目的标识，所述至少一个关联终端为与所述装置800具有收发关系的终端。
在上述装置800某些可能的实施方式中，所述第一传输块还包括所述COT中可被共享的资源的信息和/或所述第一传输块对应的信道接入优先级CAPC。
图9是本申请提供的一种通信装置900的示意图。该装置900可以是终端(例如，第一终端、第二终端或第三终端)，也可以是支持终端实现上述方法的芯片、芯片系统、或处理器等。该装置900可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
该装置900可以包括一个或多个处理器901，所述处理器901也可以称为处理单元，可以实现一定的控制功能。所述处理器901可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端、终端芯片，DU或CU等)进行控制，执行软件程序，处理软件程序的数据。
在一种可选的设计中，处理器901也可以存有指令和/或数据903，所述指令和/或数据903可以被所述处理器运行，使得该装置900执行上述方法实施例中描述的方法。
在另一种可选的设计中，处理器901中可以包括用于实现接收和发送功能的收发单元。例如该收发单元可以是收发电路，或者是接口，或者是接口电路，或者是用于实现接收和发送功能的收发电路。接收和发送功能可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在又一种可能的设计中，装置900可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。
可选地，该装置900中可以包括一个或多个存储器902，其上可以存有指令904，所述指令可在所述处理器上被运行，使得该装置900执行上述方法实施例中描述的方法。可选地，所述存储器中还可以存储有数据。可选地，处理器中也可以存储指令和/或数据。所述处理器和存储器可以单独设置，也可以集成在一起。例如，上述方法实施例中所描述的对应关系可以存储在存储器中，或者存储在处理器中。
可选地，该装置900还可以包括收发器905和/或天线906。所述处理器901可以称为处理单元，对该装置900进行控制。所述收发器905可以称为收发单元、收发机、收发电路或者收发器等，用于实现收发功能。
本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种I C工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor,CMOS)、N型金属氧化物半导体(metal oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(Bipolar Junction Transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的装置可以是终端(例如，第一终端、第二终端或第三终端)，但本申请中描述的装置的范围并不限于此，而且装置的结构可以不受图9的限制。装置可以是独立的设备或者可以是较大设备的一部分。例如所述装置可以是：(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据和/或指令的存储部件；(3)ASIC，例如调制解调器(MSM)；(4)可嵌入在其他设备内的模块；(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他等等。
图10提供了一种终端的结构示意图。为了便于说明，图10仅示出了终端的主要部件。如图10所示，终端1000包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端开机后，处理器可以读取存储单元中的软件程序，解析并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行处理后得到射频信号并将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端时，射频电路通过天线接收到射频信号，该射频信号被进一步转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
为了便于说明，图10仅示出了一个存储器和处理器。在实际的终端中，可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端进行控制，执行软件程序，处理软件程序的数据。图10中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端可以包括多个基带处理器以适应不同的网络制式，终端可以包括多个中央处理器以增强其处理能力，终端的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端1000的收发单元1011，将具有处理功能的处理器视为终端1000的处理单元1012。如图10所示，终端1000包括收发单元 1011和处理单元1012。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元1011中用于实现接收功能的器件视为接收单元，将收发单元1011中用于实现发送功能的器件视为发送单元，即收发单元1011包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。可选的，上述接收单元和发送单元可以是集成在一起的一个单元，也可以是各自独立的多个单元。上述接收单元和发送单元可以在一个地理位置，也可以分散在多个地理位置。
应理解，在一种可能的设计中，本申请提供的方法实施例中的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第一终端所执行的各个步骤或流程。
本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第二终端所执行的各个步骤或流程。
本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第三终端所执行的各个步骤或流程。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第一终端所执行的各个步骤或流程。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第二终端所执行的各个步骤或 流程。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行上述任一方法实施例中第三终端所执行的各个步骤或流程。
本申请还提供一种通信系统，其包括下述中的一种或多种：第一终端、第二终端或第三终端。
上述各个装置实施例和方法实施例完全对应，由相应的模块或单元执行相应的步骤，例如收发单元或收发器执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元或处理器执行。
在本申请的实施例中，各术语及英文缩略语均为方便描述而给出的示例性举例，不应对本申请构成任何限定。本申请并不排除在已有或未来的协议中定义其它能够实现相同或相似功能的术语的可能。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在两个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读存储介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以基于前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能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(程序)。在计算机上加载和执行所述计算机程序指令(程序)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含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。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (31)

  1. 一种无线通信方法，其特征在于，所述方法包括：
    第二终端在信道占用时间COT中的第一资源上检测到来自初始所述COT的终端的第一传输块，所述第一传输块包括第一指示信息，所述第一指示信息指示初始所述COT的终端；
    所述第二终端根据所述第一指示信息，通过共享所述COT或与所述COT关联的COT发送第二传输块，所述第二传输块的接收端包括初始所述COT的终端。
  2. 如权利要求1所述的方法，其特征在于，所述第二终端根据所述第一指示信息，通过共享所述COT或所述COT关联的COT发送第二传输块，包括：
    所述第二终端根据所述第一指示信息，确定所述第二传输块的接收端是否包括初始所述COT的终端；
    在所述第二传输块的接收端包括初始所述COT的终端的情况下，所述第二终端通过共享所述COT或所述COT关联的COT发送所述第二传输块。
  3. 如权利要求2所述的方法，其特征在于，所述第一传输块还包括所述COT中可被共享的资源的信息和/或第一信道接入优先级CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC；
    其中，在所述第二终端通过共享所述COT或所述COT关联的COT发送所述第二传输块之前，所述方法还包括：
    所述第二终端根据所述COT中可被共享的资源的信息和/或所述第一CAPC，确定所述COT中的第二资源或所述COT关联的COT中的第二资源；
    其中，所述第二终端通过共享所述COT或所述COT关联的COT发送所述第二传输块，包括：
    所述第二终端在所述COT中的第二资源上，通过共享所述COT发送所述第二传输块，或者，所述第二终端在所述COT关联的COT中的第二资源上，通过共享所述COT关联的COT发送所述第二传输块。
  4. 如权利要求3所述的方法，其特征在于，所述第二终端根据所述COT中可被共享的资源的信息和/或所述第一CAPC，确定所述COT中的第二资源或所述COT关联的COT中的第二资源，包括：
    所述第二终端的物理层根据所述COT中可被共享的资源的信息和/或所述第一CAPC，向所述第二终端的媒体接入控制MAC层上报下述中的一种：所述COT内可被共享的资源、所述COT内可被共享的资源与资源选择窗的交集、或者所述COT内可被共享的资源与候选资源集合的交集；
    所述第二终端的MAC层根据所述物理层上报的信息，确定所述COT中的第二资源或所述COT关联的COT中的第二资源。
  5. 如权利要求2-4中任一项所述的方法，其特征在于，所述第一传输块还包括第一源标识，所述第一指示信息指示所述第一源标识对应的终端为初始所述COT的终端。
  6. 如权利要求5所述的方法，其特征在于，所述第二传输块包括第一目的标识；
    其中，在所述第二终端在信道占用时间COT中的第一资源上检测到来自初始所述COT的终端的第一传输块之前，所述方法还包括：
    所述第二终端接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端；
    其中，所述第二终端根据所述第一指示信息，确定所述第二传输块的接收端是否包括初始所述COT的终端，包括：
    所述第二终端根据所述第一指示信息、所述第一源标识、所述第一目的标识、以及所述至少一组标识，确定所述第二传输块的接收端是否包括初始所述COT的终端。
  7. 如权利要求2-4中任一项所述的方法，其特征在于，所述第一指示信息包括初始所述COT的终端的侧行链路标识。
  8. 如权利要求7所述的方法，其特征在于，所述第二传输块包括第一目的标识；
    其中，在所述第二终端在信道占用时间COT中的第一资源上检测到来自初始所述COT的终 端的第一传输块之前，所述方法还包括：
    所述第二终端接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端；
    其中，所述第二终端根据所述第一指示信息，确定所述第二传输块的接收端是否包括初始所述COT的终端，包括：
    所述第二终端根据初始所述COT的终端的侧行链路标识、所述第一目的标识、以及所述至少一组标识，确定所述第二传输块的接收端是否包括初始所述COT的终端。
  9. 如权利要求1-8中任一项所述的方法，其特征在于，所述第二传输块包括第二指示信息，所述第二指示信息指示初始所述COT的终端。
  10. 如权利要求9所述的方法，其特征在于，所述第二传输块还包括第一目的标识，所述第二指示信息指示所述第一目的标识对应的终端为初始所述COT的终端；或者，
    所述第二指示信息包括初始所述COT的终端的侧行链路标识。
  11. 如权利要求9或10所述的方法，其特征在于，所述第二传输块还包括所述COT中可被共享的资源的信息和/或第一信道接入优先级CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC。
  12. 一种无线通信方法，其特征在于，所述方法包括：
    第三终端在信道占用时间COT中的第二资源上检测到来自第二终端的第二传输块，所述第二传输块包括第二指示信息，所述第二指示信息指示初始所述COT的终端；
    所述第三终端根据所述第二指示信息，通过共享所述COT或所述COT关联的COT发送第三传输块，所述第三传输块的接收端包括初始所述COT的终端。
  13. 如权利要求12所述的方法，其特征在于，所述第三终端根据所述第二指示信息，通过共享所述COT或所述COT关联的COT发送第三传输块，包括：
    所述第三终端根据所述第二指示信息，确定所述第三传输块的接收端是否包括初始所述COT的终端；
    在所述第三传输块的接收端包括初始所述COT的终端的情况下，所述第三终端通过共享所述COT或所述COT关联的COT发送所述第三传输块。
  14. 如权利要求13所述的方法，其特征在于，所述第二传输块包括所述COT中可被共享的资源的信息和/或第一CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC；
    其中，在所述第三终端通过共享所述COT或所述COT关联的COT发送所述第三传输块之前，所述方法还包括：
    所述第三终端根据所述COT中可被共享的资源的信息和/或所述第一CAPC，确定所述COT中的第三资源或所述COT关联的COT中的第三资源；
    其中，所述第三终端通过共享所述COT或所述COT关联的COT发送所述第三传输块，包括：
    第三终端在所述COT中的第三资源上，通过共享所述COT发送所述第三传输块，或者，第三终端在所述COT关联的COT中的第三资源上，通过共享所述COT关联的COT发送所述第三传输块。
  15. 如权利要求14所述的方法，其特征在于，所述第三终端根据所述COT中可被共享的资源的信息和/或所述第一CAPC，确定所述COT中的第三资源或所述COT关联的COT中的第三资源，包括：
    所述第三终端的物理层根据所述COT中可被共享的资源的信息和/或所述第一CAPC，向所述第三终端的媒体接入控制MAC层上报下述中的一种：所述COT内可被共享的资源、所述COT内可被共享的资源与资源选择窗的交集、或者所述COT内可被共享的资源与候选资源集合的交集；
    所述第三终端的MAC层根据所述物理层上报的信息，确定所述COT中的第三资源或所述COT关联的COT中的第三资源。
  16. 如权利要求13-15中任一项所述的方法，其特征在于，所述第二传输块还包括第一目的标识，第二指示信息指示所述第一目的标识对应的终端为初始所述COT的终端。
  17. 如权利要求16所述的方法，其特征在于，所述第三传输块包括第二目的标识；
    其中，在所述第三终端在信道占用时间COT中的第二资源上检测到来自第二终端的第二传输块之前，所述方法还包括：
    所述第三终端接收至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，属于同一组的标识对应一个终端；
    其中，所述第三终端根据所述第二指示信息，确定所述第三传输块的接收端是否包括初始所述COT的终端，包括：
    所述第三终端根据所述第二指示信息、所述第一目的标识、所述第二目的标识、以及所述至少一组标识，确定所述第三传输块的接收端是否包括初始所述COT的终端。
  18. 如权利要求13-15中任一项所述的方法，其特征在于，所述第二指示信息包括初始所述COT的终端的侧行链路标识。
  19. 如权利要求18所述的方法，其特征在于，所述第三传输块包括第二目的标识；
    其中，在所述第三终端在信道占用时间COT中的第二资源上检测到来自第二终端的第二传输块之前，所述方法还包括：
    所述第三终端接收至少一组标识，每组标识包括一个侧行链路标识和至少一个目的标识，属于同一组的标识对应一个终端；
    其中，所述第三终端根据所述第二指示信息，确定所述第三传输块的接收端是否包括初始所述COT的终端，包括：
    所述第三终端根据初始所述COT的终端的侧行链路标识、所述第二目的标识、以及所述至少一组标识，确定所述第三传输块的接收端是否包括初始所述COT的终端。
  20. 如权利要求12-19中任一项所述的方法，其特征在于，所述第三传输块包括第三指示信息，所述第三指示信息指示初始所述COT的终端。
  21. 如权利要求20所述的方法，其特征在于，所述第三传输块还包括第二目的标识，所述第三指示信息指示所述第二目的标识对应的终端为初始所述COT的终端；或者，
    所述第三指示信息包括所述初始所述COT的侧行链路标识。
  22. 如权利要求20或21所述的方法，其特征在于，所述第三传输块还包括所述COT中可被共享的资源的信息和/或第一CAPC，所述第一CAPC为初始所述COT的终端在初始所述COT时所采用的CAPC。
  23. 一种无线通信方法，其特征在于，所述方法包括：
    第一终端确定用于进行侧行链路传输的信道占用时间COT；
    所述第一终端使用所述COT中的第一资源发送第一传输块，所述第一传输块包括第一指示信息，所述第一指示信息指示初始所述COT的终端，所述第一终端为初始所述COT的终端。
  24. 如权利要求23所述的方法，其特征在于，所述第一传输块还包括所述第一终端对应的第一源标识，所述第一指示信息指示所述第一源标识对应的终端为初始所述COT的终端；
    以及，在所述第一终端使用所述COT中的第一资源发送第一传输块之前，所述方法还包括：
    所述第一终端向至少一个关联终端发送所述第一终端对应的所述至少一组标识，每组标识包括至少一个源标识和至少一个目的标识，所述至少一组标识包括所述第一源标识，所述至少一个关联终端为与所述第一终端具有收发关系的终端。
  25. 如权利要求23所述的方法，其特征在于，所述第一指示信息包括初始所述COT的终端的侧行链路标识；
    以及，在所述第一终端使用所述COT中的第一资源发送第一传输块之前，所述方法还包括：
    所述第一终端向至少一个关联终端发送所述第一终端的侧行链路标识和所述第一终端对应的至少一个目的标识，所述至少一个关联终端为与所述第一终端具有收发关系的终端。
  26. 如权利要求23-25中任一项所述的方法，其特征在于，所述第一传输块还包括所述COT中可被共享的资源的信息和/或第一CAPC，所述第一CAPC为所述第一终端在初始所述COT时所采用的CAPC。
  27. 一种通信装置，其特征在于，所述装置用于执行如权利要求1-26中任一项所述的方法。
  28. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1-26中任一项所述的方法。
  29. 一种存储介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求1-26中任一项所述的方法。
  30. 一种计算机程序产品，其特征在于，包括计算机程序指令，所述计算机程序指令使得所述计算机执行如权利要求1-26中任一项所述的方法。
  31. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的通信装置执行如权利要求1-26中任一项所述的方法。
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