WO2023050621A1 - 侧链路通信方法及通信装置 - Google Patents

侧链路通信方法及通信装置 Download PDF

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Publication number
WO2023050621A1
WO2023050621A1 PCT/CN2021/142780 CN2021142780W WO2023050621A1 WO 2023050621 A1 WO2023050621 A1 WO 2023050621A1 CN 2021142780 W CN2021142780 W CN 2021142780W WO 2023050621 A1 WO2023050621 A1 WO 2023050621A1
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Prior art keywords
side link
terminal
control signaling
duration
cot
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PCT/CN2021/142780
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English (en)
French (fr)
Inventor
陈咪咪
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展讯通信（上海）有限公司
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Publication of WO2023050621A1 publication Critical patent/WO2023050621A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present application relates to the technical field of communication, and in particular to a side link communication method and a communication device.
  • V2X vehicle-to-everything
  • SL-U Sidelink in Unlicensed Spectrum
  • LBT listening Before Talk
  • COT channel occupancy time
  • Embodiments of the present application provide a side link communication method and a communication device, which can implement COT sharing among terminals, thereby improving resource utilization.
  • the embodiment of the present application provides a side link communication method, the method includes: the first terminal receives the side link control signaling sent by the second terminal, and the side link control signaling includes a first indication information, the first indication information is used to indicate a first duration, and the first duration includes the duration of the channel occupancy time COT or the remaining duration of the COT;
  • the first terminal determines a starting time domain position, and performs side link communication within the time domain resources determined by the starting time domain position and the first duration.
  • the first terminal receives the side link control signaling sent by the second terminal, where the side link control signaling includes first indication information, and the first indication information is used to indicate the duration of the shareable COT duration or remaining duration, the first terminal can communicate within the time domain resource determined according to the initial time domain position and the first duration, and the COT can be shared between terminals through this application, thereby improving resource utilization.
  • the side link control signaling further includes an identifier of the COT.
  • the first indication information includes an index value, and the index value is used for the first terminal to obtain the first duration; or,
  • the first indication information includes the first duration.
  • the side link control signaling further includes second indication information, and the second indication information is used to indicate that the starting time domain position is related to the first terminal receiving the the time interval between the times of the side link control signaling;
  • the starting time domain position is a position determined according to the time when the first terminal receives the side link control signaling and the time interval.
  • the starting time domain position is the first symbol of the time unit at which the first terminal receives the side link control signaling; or,
  • the starting time domain position is the first symbol of a time unit next to the time unit at which the first terminal receives the side link control signaling.
  • the side link control signaling further includes third indication information, where the third indication information is used to indicate time domain resources for the second terminal to transmit data in the COT ;
  • the starting time domain position is the first symbol of the next time unit after the end of the time domain resource.
  • the side link control signaling is side link control signaling in a first format; the side link control signaling in the first format is used to instruct the COT to shared.
  • the side link control signaling is side link control signaling in a second format; the side link control signaling in the second format is used to schedule data.
  • the embodiment of the present application provides a side link communication method, the method including:
  • the second terminal determines the first duration, and the first duration includes the duration of the channel occupancy time COT or the remaining duration of the COT;
  • the second terminal sends side link control signaling, where the side link control signaling includes first indication information, where the first indication information is used to indicate the first duration.
  • the side link control signaling further includes the identifier of the COT.
  • the side link control signaling further includes second indication information, and the second indication information is used to indicate the starting time domain position and the first terminal receiving the side link The time interval between the times of road control signaling.
  • the COT is obtained by the second terminal or the third terminal through Listen-before-talk LBT;
  • the second terminal transmits data in the COT.
  • the identifier of the COT is the source identification code of the second terminal.
  • the identifier of the COT is the source identification code of the third terminal.
  • an embodiment of the present application provides a communication device, where the communication device includes a unit for implementing the method in any possible implementation manner of the foregoing first aspect and second aspect.
  • an embodiment of the present application provides a communication device, the communication device includes a processor and a memory, the processor and the memory are connected to each other, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to The program instruction is invoked to execute the method described in the first aspect, or to execute the method described in the second aspect.
  • the embodiment of the present application provides a chip, the chip includes a processor and an interface, the processor and the interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions, so as to perform as described in the first aspect method, or perform the method as described in the second aspect.
  • the embodiment of the present application provides a module device, which is characterized in that the module device includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for the The module device provides power; the storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for the module device to communicate with external devices; the chip module is used to execute The method described in the first aspect, or, execute the method described in the second aspect.
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a processor, the The processor executes the method described in the first aspect, or executes the method described in the second aspect.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a side link communication method provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a COT sharing provided by an embodiment of the present application.
  • FIG. 4 is an example of a COT sharing scenario provided by an embodiment of the present application.
  • FIG. 5 is an example of another COT sharing scenario provided by the embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the technical solution of the present application can be applicable to the third generation mobile communication (3th generation, 3G) system, the fourth generation mobile communication (45th generation, 4G) system, and can also be applicable to the fifth generation mobile communication (5th generation, 5G) system , which can also be called a new air interface (New Radio, NR) system, or a sixth generation mobile communication (6th generation, 6G) system or other communication systems in the future.
  • the technical solutions of the present application are also applicable to different network architectures, including but not limited to relay network architectures, dual-link architectures, and vehicle-to-everything communication architectures.
  • terminal equipment may refer to various forms of user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), remote station, remote terminal , mobile device, user terminal, wireless communication device, user agent, or user device.
  • the terminal device 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), a Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or in the future evolution of public land mobile networks (PLMN)
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • Functional handheld devices computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or in the future evolution of public land mobile networks (PLMN)
  • PLMN public land mobile networks
  • the network device may be a device with a wireless transceiver function or a chip that may be configured on the device, and the network device includes but is not limited to: evolved node B (evolved node B, eNB), wireless network controller ( radio network controller, RNC), node B (node B, NB), network device controller (base station controller, BSC), network device transceiver station (base transceiver station, BTS), home network equipment (for example, home evolved node B , or home node B, HNB), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc., can also be 4G, Devices used in 5G, 6G and other systems are not limited here.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include but not limited to one or more network devices and one or more terminal devices, as shown in Figure 1, one network device and two terminal devices are taken as an example, wherein the network device in Figure 1 is an example of a base station,
  • the terminal device takes a vehicle as an example.
  • the terminal device can establish a wireless link with the network device for communication, and a side link can also be established between the terminal device and the terminal device for communication.
  • the communication system shown in FIG. 1 includes but is not limited to network equipment and terminal equipment, and may also include other communication equipment.
  • the number and form of equipment shown in FIG. 1 are for example and do not constitute a limitation to this embodiment of the application.
  • the control signaling in the V2X system includes the first-order SCI (1st-stage SCI) and second-stage SCI (2nd-stage SCI), the first-stage SCI is carried by the physical sidelink control channel (PSCCH), and the second-stage SCI and data are carried by the physical sidelink shared channel (physical sidelink shared channel, PSSCH) bearer, and PSCCH and PSSCH are always transmitted together.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the specific format of the second-stage SCI decoded by the UE is indicated by the second-stage SCI format 2nd-stage SCI format field in the first-stage SCI, as shown in Table 1.
  • the second-stage SCI (2nd-stage SCI) includes two formats: SCI format 2-A and SCI format 2-B.
  • SCI format 2-A is shown in Table 2.
  • the source identification code field is used to indicate the source identification code
  • the target identification code field is used to indicate the target identification code
  • the transmission type indication field is used to indicate the transmission type, including: unicast (unicast), multicast (groupcast) and Broadcast.
  • SCI format 2-B is shown in Table 3.
  • SCI format 2-B includes: hybrid automatic repeat request process number field (HARQ process number), the size is 4bits; source identification code field (Source ID), used to indicate the source identification code, the size is 8bits; target identification code The domain (Destination ID) is used to indicate the target identification code, and the size is 16 bits; the area identification code field (Zone ID), is used to indicate the area identification code, and the size is 12 bits.
  • HARQ process number hybrid automatic repeat request process number field
  • the size is 4bits
  • Source identification code field (Source ID) used to indicate the source identification code, the size is 8bits
  • target identification code The domain (Destination ID) is used to indicate the target identification code, and the size is 16 bits
  • the area identification code field (Zone ID) is used to indicate the area identification code, and the size is 12 bits.
  • FIG. 2 is a schematic flowchart of a side link communication method provided by an embodiment of the present application.
  • the side link communication method can be applied to the communication system shown in FIG. 1, from the first terminal and the second From the perspective of terminal interaction.
  • the side link communication method includes the following steps:
  • the second terminal determines a first duration, where the first duration includes the duration of the channel occupancy time COT or the remaining duration of the COT;
  • the second terminal sends side link control signaling, where the side link control signaling includes first indication information, and the first indication information is used to indicate the first duration.
  • V2X works in the Sidelink in Unlicensed Spectrum (SL-U)
  • SL-U Sidelink in Unlicensed Spectrum
  • the COT of this application may be obtained by the second terminal through LBT, that is, the COT is shared by the second terminal, or the COT may also be obtained by the third terminal through LBT, that is, the The COT is shared by the third terminal, and the second terminal occupies the COT shared by the third terminal, and transmits data in the COT shared by the third terminal.
  • This application avoids not receiving the data sent by the third terminal due to half-duplex and other reasons.
  • the COT sharing information therefore, the second terminal occupying the COT shared by the third terminal may also send the side link control signaling including the first duration, that is, the COT sharing information.
  • the second terminal determines the first duration.
  • the first duration may include the duration of the COT or the remaining duration of the COT. Since the end time of the COT is determined, the determination of the first duration usually depends on the start time How the domain location is determined:
  • Mode 1 if the initial time domain position is the first symbol of the time unit where other terminals (such as the first terminal) receive the side link control signaling, or the other terminal (such as the first terminal) receives the side link control signaling For the first symbol of the next time unit of the time unit where the time of the control signaling is located, the time difference between the first symbol and the end time of the COT is calculated, which is the first duration, where the time unit can be a time slot .
  • the first duration may be the duration of the COT; if the terminal receiving the link control signaling is based on The first symbol of the next time unit of the time unit where the link control signaling on the receiving side is located is used as the starting time domain position, and the first duration may be the remaining duration of the COT.
  • the first duration may be the The time difference between the determined location and the end time of the COT.
  • the time interval indicated by the side link control signaling is the time interval between the initial time domain position and the time when other terminals (such as the first terminal) receive the side link control signaling, and the time interval may be time
  • the slot is a unit, for example, indicating that the position determined in one time slot after receiving the side link control signaling is the initial time domain position.
  • the time domain resource may be a time domain resource used by the second terminal to transmit data in the COT.
  • the starting time domain position may be the time domain indicated by the second terminal.
  • For the first symbol of the next time unit after the end of the time domain resource calculate the time difference between the first symbol and the end time of the COT, which is the first duration, where the time unit may be a time slot.
  • the side link control signaling sent by the second terminal may indicate multiple time domain resources for the second terminal to transmit data multiple times within the COT, and the initial time domain position may be the indicated multiple time domain resources.
  • the start time domain position is directly indicated by the second terminal, for example, the side link control signaling sent by the second terminal includes the start time domain position, then calculate the start time domain position and the end of COT The time difference between times is the first duration.
  • the second terminal After determining the first duration, the second terminal sends side link control signaling, where the side link control signaling may include first indication information, where the first indication information is used to indicate the first duration.
  • the first indication information may directly or indirectly indicate the first duration.
  • the first indication information may include the first duration, or the first indication information includes an index value, and the index value is used to obtain the first duration, for example, there is a one-to-one correspondence between the index value and the first duration.
  • the side link control signaling includes a COT duration indicator field COT duration indicator, and the COT duration indicator includes an index value, and other terminals can determine the final first duration in the table configured by the high-level parameter according to the index value .
  • the terminal is used as an example to illustrate.
  • UE1 After UE1 successfully accesses the channel, it can share the acquired COT1 with other UEs, such as UE2 and UE3 in the figure.
  • the link control signaling indicates the first duration, which may be the remaining duration of COT1, that is, the first symbol of the first time slot after the end of the time domain resource used by UE1 to transmit data in COT1 to the end of COT1 The duration between times.
  • UE2 receives the side link control signaling sent by UE1 and occupies the shared COT1, UE2 can also indicate the remaining duration of COT1 through the side link control signaling.
  • the remaining duration of COT1 indicated by UE2 is UE2 transmitting data in COT1
  • UE3 decodes the side link control signaling of UE1 and/or UE2 and uses the shared COT1.
  • UE3 can also further indicate the remaining duration of COT1 through the side link control signaling.
  • the remaining duration of COT1 indicated by UE3 is that UE3 is in COT1.
  • the duration between the first symbol of the first time slot after the end of the time domain resource used for data transmission and the end time of COT1, as shown in FIG. 3 the first duration indicated by each UE may be different.
  • the second terminal in the embodiment of this application may be UE1 in Figure 3, that is, the COT1 is obtained by the second terminal through LBT, and the second terminal may also be UE2 or UE3 in Figure 3, that is, the COT1 is the third terminal (UE1) is obtained through LBT, and the second terminal occupies COT1 shared by the third terminal.
  • the second terminal when the second terminal indicates the first duration through the first indication information in the side link control signaling, it may also indicate the identity of the shared COT in the side link control signaling.
  • the scenarios shown in Figure 4 and Figure 5 can be distinguished by indicating the shared COT identifier in the side link control signaling.
  • UE1 obtains COT1 through LBT and sends data in COT1, but COT1 terminates early, and UE2 Provide shared COT2, the UE2 can send side link control signaling including the COT2 identifier, UE1 receives the side link control signaling, and determines the available COT through the COT2 identifier in the side link control signaling It is not COT1 that is terminated early, but COT2, and the UE1 can transmit data through COT2 without re-competing for the channel.
  • UE1 obtains COT1 through LBT and sends data in COT1, UE1 shares COT1 with other UEs (such as UE2 and UE3), and if UE1 needs to send data again, it cannot send data in the shared COT1 , although UE1 receives the side link control signaling containing the remaining duration of COT1 sent by other UEs, UE1 determines that COT1 cannot be used through the identifier of COT1, and needs to compete for the channel through LBT again.
  • UEs such as UE2 and UE3
  • the identifier of the COT in this application may be the source identification code source ID of the terminal device sharing the COT, where the terminal device sharing the COT refers to the terminal device obtaining the COT through LBT.
  • the source identification code source ID may be the source ID included in the second-order SCI sent by the terminal device sharing the COT.
  • the side link control signaling sent by the second terminal to indicate the first duration may be side link control signaling in a first format, and the side link control signaling in the first format It is used to indicate that the COT is shared, that is, the second terminal sends a dedicated SCI for sharing the COT.
  • the dedicated SCI may not be transmitted together with the data.
  • the dedicated SCI may be transmitted once instead of each time in multiple consecutive transmissions The SCI of each transmission carries the COT shared information.
  • the dedicated SCI can be a new first-order SCI, that is, the new 1st-stage SCI format, or a new second-order SCI, that is, the new 2nd-stage SCI format, and the dedicated SCI is used for Indicates COT sharing information
  • the dedicated SCI includes at least a field for carrying the COT identifier, such as COT ID indicator, and also includes a field for carrying the first duration, such as COT duration indicator.
  • it also includes a field for carrying The field of time interval, such as COT sharing offset, the time interval is used to indicate the time interval between the start time domain position of COT and the time when the SCI is received.
  • the side link control signaling sent by the second terminal to indicate the first duration may be side link control signaling in a second format, and the side link control signaling in the second format It is used to indicate the scheduling of data, that is, without designing a dedicated SCI, but adding COT shared information in the SCI used to schedule data, that is, adding a field for carrying the COT identifier, such as COT ID indicator, and adding a field for carrying The field of the first duration, such as COT duration indicator, optionally, a field for carrying a time interval, such as COT sharing offset, is added, and the time interval is used to indicate the time between the start time domain position of COT and the time when the SCI is received time interval between.
  • the COT sharing information is carried in the SCI of each scheduled data transmission.
  • the first terminal determines a starting time domain position, and performs side link communication within the time domain resources determined by the starting time domain position and the first duration.
  • the way the first terminal determines the initial time domain position needs to correspond to the way the second terminal determines the first duration.
  • the method by which the second terminal determines the first duration can be pre-defined. Introduce various ways for the first terminal to determine the initial time domain position, which correspond to various ways for the second terminal to determine the first duration:
  • the first terminal uses the first symbol of the time unit where the time of receiving the side link control signaling is located as the initial time domain position, or the first terminal uses the time of receiving the side link control signaling
  • the first symbol of the next time unit of the time unit where the time of the road control signaling is located is taken as the starting time domain position.
  • the first terminal obtains the time interval indicated by the second terminal in the side link control signaling, and determines the time interval according to the time of receiving the side link control signaling and the time interval
  • the initial time domain position refers to the time interval between the initial time domain position and the time when the side link control signaling is received, and the time interval may be in units of time slots.
  • the first terminal obtains the time domain resource indicated by the second terminal from the received side link control signaling, and determines the initial time domain position according to the time domain resource, For example, the starting time domain position is the first symbol of the next time unit after the end of the time domain resource indicated by the second terminal. It should be noted that if the second terminal indicates multiple time domain resources, the starting time domain position may be the first of the next time unit after the end of the last time domain resource among the indicated multiple time domain resources. symbol.
  • the side link control signaling sent by the second terminal includes the start time domain position, then the first terminal can obtain the starting time domain position from the received side link control signaling The initial time domain position.
  • the first terminal determines the first duration through the first indication information in the side link control signaling, and performs side link communication within the time domain resource determined by the initial time domain position and the first duration. Wherein, if the first indication information is an index value, the first terminal needs to obtain the corresponding first duration according to the index value.
  • the first terminal receives the side link control signaling sent by the second terminal, the side link control signaling includes first indication information, and the first indication information is used to indicate the duration of the shareable COT Or the remaining duration, the first terminal can communicate within the time domain resource determined according to the initial time domain position and the first duration, and the COT can be shared between terminals according to this application, thereby improving resource utilization.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be the first terminal, or a device in the first terminal, or a device that can be matched and used with the first terminal.
  • the communication device 600 shown in FIG. 6 may include a processing unit 601 and a communication unit 602 .
  • the processing unit 601 is configured to perform data processing.
  • the communication unit 602 is integrated with a receiving unit and a sending unit.
  • the communication unit 602 may also be called a transceiver unit. Alternatively, the communication unit 602 may also be split into a receiving unit and a sending unit.
  • the processing unit 601 and the communication unit 602 below are the same, and will not be described in detail below. in:
  • the communication unit 602 is configured to receive side link control signaling sent by the second terminal, where the side link control signaling includes first indication information, where the first indication information is used to indicate a first duration, and the first The duration includes the duration of the channel occupation time COT or the remaining duration of the COT;
  • a processing unit 601 configured to determine a starting time domain position
  • the communication unit 602 is configured to perform side link communication within the time domain resource determined by the initial time domain position and the first duration.
  • the side link control signaling further includes an identifier of the COT.
  • the first indication information includes an index value, and the index value is used for the first terminal to obtain the first duration; or,
  • the first indication information includes the first duration.
  • the side link control signaling further includes second indication information, and the second indication information is used to indicate that the starting time domain position is related to the first terminal receiving the the time interval between the times of the side link control signaling;
  • the starting time domain position is a position determined according to the time when the first terminal receives the side link control signaling and the time interval.
  • the starting time domain position is the first symbol of the time unit at which the first terminal receives the side link control signaling; or,
  • the starting time domain position is the first symbol of a time unit next to the time unit at which the first terminal receives the side link control signaling.
  • the side link control signaling further includes third indication information, where the third indication information is used to indicate time domain resources for the second terminal to transmit data in the COT ;
  • the starting time domain position is the first symbol of the next time unit after the end of the time domain resource.
  • the side link control signaling is side link control signaling in a first format; the side link control signaling in the first format is used to instruct the COT to shared.
  • the side link control signaling is side link control signaling in a second format; the side link control signaling in the second format is used to schedule data.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be the second terminal, or a device in the second terminal, or a device that can be matched and used with the second terminal.
  • the communication device 600 shown in FIG. 6 may include a processing unit 601 and a communication unit 602 .
  • the processing unit 601 is configured to perform data processing.
  • the communication unit 602 is integrated with a receiving unit and a sending unit.
  • the communication unit 602 may also be called a transceiver unit. Alternatively, the communication unit 602 may also be split into a receiving unit and a sending unit.
  • the processing unit 601 and the communication unit 602 below are the same, and will not be described in detail below. in:
  • the processing unit 601 is configured to determine a first duration, where the first duration includes the duration of the channel occupancy time COT or the remaining duration of the COT;
  • the communication unit 602 is configured to send side link control signaling, where the side link control signaling includes first indication information, where the first indication information is used to indicate the first duration.
  • the side link control signaling further includes the identifier of the COT.
  • the side link control signaling further includes second indication information, and the second indication information is used to indicate the starting time domain position and the first terminal receiving the side link The time interval between the times of road control signaling.
  • the COT is obtained by the second terminal or the third terminal through Listen-before-talk LBT;
  • the second terminal transmits data in the COT.
  • the identifier of the COT is the source identification code of the second terminal.
  • the identifier of the COT is the source identification code of the third terminal.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application, which is used to implement the functions of the first terminal in FIG. 2 above.
  • the communication device 700 may be a first terminal or a device for a first terminal.
  • the device for the first terminal may be a chip system or a chip in the terminal.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the communication device 700 is configured to implement the function of the second terminal in FIG. 2 above.
  • the communication device may be the second terminal or a device for the second terminal.
  • the apparatus for the second terminal may be a chip system or a chip in the network device.
  • the communication device 700 includes at least one processor 720, configured to implement the data processing function of the first terminal or the second terminal in the method provided by the embodiment of the present application.
  • the apparatus 700 may further include a communication interface 710, configured to implement the transceiving operation of the first terminal or the second terminal in the method provided by the embodiment of the present application.
  • the processor 720 may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the communication interface 710 may be a transceiver, a circuit, a bus, a module or other types of communication interfaces, and is used for communicating with other devices through a transmission medium.
  • the communication interface 710 is used for devices in the device 700 to communicate with other devices.
  • the processor 720 uses the communication interface 710 to send and receive data, and is used to implement the method described in FIG. 2 of the above method embodiment.
  • the communication device 700 may also include at least one memory 730 for storing program instructions and/or data.
  • the memory 730 is coupled to the processor 720 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 720 may cooperate with memory 730 .
  • Processor 720 may execute program instructions stored in memory 730 . At least one of the at least one memory may be included in the processor.
  • the processor 720 can read the software program in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 720 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit (not shown in the figure), and the radio frequency circuit performs radio frequency processing on the baseband signal, and passes the radio frequency signal through the antenna in the form of electromagnetic waves Send out.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 720, and the processor 720 converts the baseband signal into data and processes the data deal with.
  • the radio frequency circuit and antenna can be set independently from the processor 720 for baseband processing. layout.
  • a specific connection medium among the communication interface 710, the processor 720, and the memory 730 is not limited.
  • the memory 730, the processor 720, and the communication interface 710 are connected through the bus 740.
  • the bus is represented by a thick line in FIG. 7, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 7 , but it does not mean that there is only one bus or one type of bus.
  • the communication device 700 When the communication device 700 is specifically used for a terminal, for example, when the communication device 700 is specifically a chip or a chip system, what the communication interface 710 outputs or receives may be a baseband signal. When the communication device 700 is specifically a terminal, what the communication interface 710 outputs or receives may be a radio frequency signal.
  • the communication device can execute the relevant steps of the first terminal or the second terminal in the foregoing method embodiments, and for details, refer to the implementation manners provided by the above steps, which will not be repeated here.
  • each module contained therein may be realized by hardware such as a circuit, and different modules may be located in the same component (such as a chip, a circuit module, etc.) or different components in the terminal.
  • at least part of the modules may be implemented in the form of a software program, the software program runs on a processor integrated in the terminal, and the remaining (if any) modules may be implemented in hardware such as circuits.
  • the memory described above may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable rom, PROM), erasable programmable read-only memory (erasable prom, EPROM), electrically programmable Erase programmable read-only memory (electrically eprom, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic random access memory dynamic random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • Synchronously connect dynamic random access memory switchlink DRAM, SLDRAM
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • An embodiment of the present application provides a chip.
  • the chip includes: processor and memory.
  • the number of processors may be one or more, and the number of memories may be one or more.
  • the processor can execute the above-mentioned side link communication method as shown in FIG. 2 and the steps executed in the related implementation manners.
  • FIG. 8 is a schematic structural diagram of a module device provided by an embodiment of the present application.
  • the module device 800 can execute the relevant steps of the first terminal or the second terminal in the foregoing method embodiments, and the module device 800 includes: a communication module 801 , a power supply module 802 , a storage module 803 and a chip module 804 .
  • the power supply module 802 is used to provide power for the module equipment;
  • the storage module 803 is used to store data and instructions;
  • the communication module 801 is used for internal communication of the module equipment, or for communication between the module equipment and external equipment ;
  • the chip module 804 can execute the above-mentioned side link communication method as shown in FIG. 2 , and the steps executed in related embodiments.
  • the embodiment of the present application also provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program includes program instructions.
  • the program instructions are executed by the processor, the above-mentioned side link communication method shown in FIG. A step of.
  • the computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the foregoing embodiments, such as a hard disk or memory of the device.
  • the computer-readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk equipped on the device, a smart media card (smart media card, SMC), a secure digital (secure digital , SD) card, flash card (flash card) and so on.
  • the computer-readable storage medium may also include both an internal storage unit of the terminal device or network device and an external storage device.
  • the computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device.
  • the computer-readable storage medium can also be used to temporarily store data that has been output or will be output.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, high-density digital video disc (digital video disc, DVD)), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • the above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or other arbitrary combinations.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product comprises one or more computer instructions or computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Wired or wireless transmission to another website site, computer, server or data center.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of 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 may be distributed to multiple network units. Part 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 invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium.
  • the above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

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Abstract

本申请提供一种侧链路通信方法及通信装置，其中，侧链路通信方法包括：第一终端接收第二终端发送的侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；所述第一终端确定起始时域位置，并在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。采用本申请，可以实现终端之间COT的共享，提高资源利用率。

Description

侧链路通信方法及通信装置 技术领域
本申请涉及通信技术领域，尤其涉及一种侧链路通信方法及通信装置。
背景技术
当车辆到任何物体的通信(vehicle-to-everything，V2X)工作在侧链路非授权频段(Sidelink in Unlicensed Spectrum，SL-U)系统中时，所有信道传输之前必须进行先听后说(Listen Before Talk，LBT)的检测，当终端通过LBT成功接入信道并获得信道占用时间(Channel Occupancy time，COT)之后，即可在COT内使用此信道，通常终端实际在COT内占用的资源并不多，从而造成资源浪费。
发明内容
本申请实施例提供一种侧链路通信方法及通信装置，终端之间可以实现COT的共享，从而提高资源利用率。
第一方面，本申请实施例提供了一种侧链路通信方法，该方法包括：第一终端接收第二终端发送的侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
所述第一终端确定起始时域位置，并在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。
基于第一方面的描述，第一终端接收第二终端发送的侧链路控制信令，该侧链路控制信令包括第一指示信息，该第一指示信息用于指示可共享的COT的持续时长或剩余时长，该第一终端可以在根据起始时域位置和第一时长所确定的时域资源内进行通信，通过本申请终端之间可以相互共享COT，从而提高资源利用率。
在一种可选的实施方式中，所述侧链路控制信令还包括所述COT的标识。
在一种可选的实施方式中，所述第一指示信息包括索引值，所述索引值用于所述第一终端获取所述第一时长；或者，
所述第一指示信息包括所述第一时长。
在一种可选的实施方式中，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示所述起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔；
所述起始时域位置是根据所述第一终端接收所述侧链路控制信令的时间和所述时间间隔确定的位置。
在一种可选的实施方式中，所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的第一个符号；或者，
所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号。
在一种可选的实施方式中，所述侧链路控制信令还包括第三指示信息，所述第三指示信息用于指示所述第二终端在所述COT中传输数据的时域资源；
所述起始时域位置是所述时域资源结束后的下一个时间单元的第一个符号。
在一种可选的实施方式中，所述侧链路控制信令为第一格式的侧链路控制信令；所述第一格式的侧链路控制信令用于指示对所述COT进行共享。
在一种可选的实施方式中，所述侧链路控制信令为第二格式的侧链路控制信令；所述第二格式的侧链路控制信令用于对数据进行调度。
第二方面，本申请实施例提供了一种侧链路通信方法，该方法包括：
第二终端确定第一时长，所述第一持续时长包括信道占用时间COT的持续时长或COT的剩余时长；
所述第二终端发送侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示所述第一时长。
在一种可选的实施方式中，所述侧链路控制信令中还包括所述COT的标识。
在一种可选的实施方式中，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔。
在一种可选的实施方式中，所述COT是所述第二终端或第三终端通过先听后说LBT获取的；
其中，所述第二终端在所述COT内传输数据。
在一种可选的实施方式中，如果所述COT是所述第二终端通过LBT获取的，所述COT的标识为所述第二终端的源标识码；或者，
如果所述COT是所述第三终端通过LBT获取的，所述COT的标识为所述第三终端的源标识码。
第三方面，本申请实施例提供了一种通信装置，该通信装置包括用于实现上述第一方面和第二方面中任一种可能的实现方式中的方法的单元。
第四方面，本申请实施例提供了一种通信装置，该通信装置包括处理器和存储器，处理器和存储器相互连接，存储器用于存储计算机程序，计算机程序包括程序指令，处理器被配置用于调用该程序指令，以执行如第一方面所述的方法，或者，执行如第二方面所述的方法。
第五方面，本申请实施例提供一种芯片，该芯片包括处理器与接口，处理器和接口耦合；接口用于接收或输出信号，处理器用于执行代码指令，以执行如第一方面所述的方法，或者，执行如第二方面所述的方法。
第六方面，本申请实施例提供一种模组设备，其特征在于，该模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：该电源模组用于为该模组设备提供电能；该存储模组用于存储数据和指令；该通信模组用于进行模组设备内部通信，或者用于该模组设备与外部设备进行通信；该芯片模组用于执行如第一方面所述的方法，或者，执行如第二方面所述的方法。
第七方面，本申请实施例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，所述计算机程序包括程序指令，所述程序指令当被处理器执行时使所述处理器执行如第一方面所述的方法，或者，执行如第二方面所述的方法。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种通信系统的结构示意图；
图2是本申请实施例提供的一种侧链路通信方法的流程示意图；
图3是本申请实施例提供的一种COT共享的示意图；
图4是本申请实施例提供的一种COT共享的场景示例；
图5是本申请实施例提供的另一种COT共享的场景示例；
图6是本申请实施例提供的一种通信装置的结构示意图；
图7是本申请实施例提供的另一种通信装置的结构示意图；
图8是本申请实施例提供的一种模组设备的结构示意图。
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阐述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素，此外，本申请不同实施例中具有同样命名的部件、特征、要素可能具有相同含义，也可能具有不同含义，其具体含义需以其在该具体实施例中的解释或者进一步结合该具体实施例中上下文进行确定。
应当理解，在本文中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，表示前后关联对象是一种“或”的关系。
应当理解，在本文中，出现的“多个”是指两个或两个以上。
应当理解，在本文中，出现的第一、第二等描述，仅作示意与区分描述对象之用，没有次序之分，也不表示本申请实施例中对设备个数的特别限定，不能构成对本申请实施例的任何限制。
本申请的技术方案可以适用于第三代移动通信(3th generation，3G)系统、第四代移动通信(45th generation，4G)系统，还可以适用于第五代移动通信(5th generation，5G)系统，也可以称为新空口(New Radio，NR)系统，或者第六代移动通信(6th generation，6G)系统或未来的其他通信系统。
本申请的技术方案也适用于不同的网络架构，包括但不限于中继网络架构、双链接架 构、车辆到任何物体的通信(vehicle-to-everything)架构。
本申请实施例中，终端设备可以指各种形式的用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台(mobile station，MS)、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、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、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，简称PLMN)中的终端设备等，本申请实施例对此不做限定。
本申请实施例中，网络设备可为具有无线收发功能的设备或可设置于该设备的芯片，该网络设备包括但不限于：演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、网络设备控制器(base station controller，BSC)、网络设备收发台(base transceiver station，BTS)、家庭网络设备(例如，home evolved node B，或home node B，HNB)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为4G、5G、6G等系统中使用的设备等，这里不做限制。
请参阅图1，图1是本申请实施例提供的一种通信系统的结构示意图。该通信系统可以包括但不限于一个或多个网络设备、一个或多个终端设备，如图1以一个网络设备和两个终端设备为例，其中，图1中的网络设备以基站为例，终端设备以车辆为例，终端设备可以和网络设备建立无线链路进行通信，终端设备和终端设备之间也可以建立侧链路进行通信。图1所示的通信系统包括但不限于网络设备和终端设备，还可以包括其他的通信设备，图1所示的设备数量和形态用于举例并不构成对本申请实施例的限定。
在如图1所示的通信系统中，某一个终端设备通过LBT成功接入信道并获取COT之后，可以将该COT共享给其他终端设备，从而实现终端设备之间COT的共享，提高侧链路资源利用率。
在介绍本申请的侧链路通信方法之前，先阐述本申请所涉及的侧链路控制信令(Sidelink Control information，SCI)，目前V2X系统中的控制信令包括第一阶SCI(1st-stage SCI)和第二阶SCI(2nd-stage SCI)，第一阶SCI由物理侧链路控制信道(physical sidelink control channel，PSCCH)承载，第二阶SCI和数据由物理侧链路共享信道(physical sidelink shared channel，PSSCH)承载，且PSCCH和PSSCH总是一起传输。
UE解码的第二阶SCI具体格式由第一阶SCI中的第二阶SCI格式2nd-stage SCI format域指示，具体如表1。
表1
Figure PCTCN2021142780-appb-000001
Figure PCTCN2021142780-appb-000002
如表1所示的内容，第二阶SCI(2nd-stage SCI)包括两种格式：SCI format 2-A和SCI format 2-B。
其中，SCI format 2-A如表2所示。
表2
Figure PCTCN2021142780-appb-000003
其中，源标识码域，用于指示源标识码；目标标识码域，用于指示目标标识码；传输类型指示域用于指示传输类型，包括：单播(unicast)、组播(groupcast)和广播(Broadcast)。
其中，SCI format 2-B如表3所示。
表3
Figure PCTCN2021142780-appb-000004
其中，SCI format 2-B包括：混合自动重传请求进程号域(HARQ process number)，大小为4bits；源标识码域(Source ID)，用于指示源标识码，大小为8bits；目标标识码域(Destination ID)，用于指示目标标识码，大小为16bits；区域标识码域(Zone ID)，用于指示区域标识码，大小为12bits。
请参见图2，图2是本申请实施例提供的一种侧链路通信方法的流程示意图，该侧链路通信方法可应用于如图1所示的通信系统，从第一终端和第二终端交互的角度进行阐述。该侧链路通信方法包括以下步骤：
S201，第二终端确定第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
S202，所述第二终端发送侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示所述第一时长。
本申请实施例中，V2X工作在侧链路非授权频段(Sidelink in Unlicensed Spectrum，SL-U)时，终端通过LBT信道接入成功后，可以将COT共享给其他终端，其中，终端可以是采用Type1信道接入方式发起信道占用。
在一些可选的实现方式中，本申请的COT可以是第二终端通过LBT获取的，即该COT是第二终端共享的，或者，该COT也可以是第三终端通过LBT获取的，即该COT是第三终端共享的，该第二终端占用第三终端共享的COT，并在该第三终端共享的COT内传输数据，本申请为了避免由于半双工等原因没收到第三终端发送的COT共享信息，因此占用第三终端共享的COT的第二终端也可以发送包括第一时长的侧链路控制信令，即COT共享信息。
具体可选的，第二终端确定第一时长，该第一时长可以包括COT的持续时长或COT的剩余时长，由于该COT的结束时间确定，因此该第一时长的确定通常依赖于起始时域位置的确定方式：
方式1，如果起始时域位置是其他终端(比如第一终端)接收侧链路控制信令的时间所在时间单元的第一个符号，或者是其他终端(比如第一终端)接收侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号，则计算该第一个符号与COT的结束时间之间的时间差，即为第一时长，其中，时间单元可以是时隙。在该种方式中，如果该COT是第二终端通过LBT获取的，且第二终端是在第一个时隙内向其他终端发送侧链路控制信令，如果接收侧链路控制信令的终端是以接收侧链路控制信令的时间所在时间单元的第一个符号作为起始时域位置，则该第一时长可以是COT的持续时长；如果接收侧链路控制信令的终端是以接收侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号作为起始时域位置，则该第一时长可以是COT的剩余时长。
方式2，如果起始时域位置是其他终端(比如第一终端)接收侧链路控制信令的时间和该侧链路控制信令指示的时间间隔确定的位置，该第一时长可以是该确定的位置与COT的结束时间之间的时间差。其中，该侧链路控制信令指示的时间间隔是起始时域位置与其他终端(比如第一终端)接收侧链路控制信令的时间之间的时间间隔，该时间间隔可以是以时隙slot为单位，比如，指示在接收到侧链路控制信令后的1个时隙所确定的位置为起始时域位置。
方式3，如果起始时域位置是根据第二终端发送的侧链路控制信令中所指示的时域资源确定的，则计算根据该时域资源所确定的起始时域位置与COT的结束时间之间的时间差，即为第一时长，该时域资源可以是用于第二终端在该COT中传输数据的时域资源， 比如，起始时域位置可以是该第二终端指示的时域资源结束后的下一个时间单元的第一个符号，则计算该第一个符号与COT的结束时间之间的时间差，即为第一时长，其中，时间单元可以是时隙。需要说明的是，第二终端发送的侧链路控制信令中可以指示多个时域资源用于该第二终端在COT内多次传输数据，则起始时域位置可以是该指示的多个时域资源中的最后一个时域资源结束后的下一个时间单元的第一个符号。
方式4，如果起始时域位置是第二终端直接指示的，比如，第二终端发送的侧链路控制信令中包括起始时域位置，则计算该起始时域位置与COT的结束时间之间的时间差，即为第一时长。
第二终端在确定第一时长之后，发送侧链路控制信令，该侧链路控制信令可以包括第一指示信息，该第一指示信息用于指示该第一时长。其中，第一指示信息可以直接或间接指示第一时长。例如，该第一指示信息可以包括该第一时长，或者，该第一指示信息包括索引值，该索引值用于获取第一时长，比如索引值与第一时长存在一一对应的关系。示例性的，该侧链路控制信令包括COT持续时长指示字段COT duration indicator，该COT duration indicator包括索引值，其他终端可根据该索引值在高层参数配置的表格中确定最终的第一时长大小。
如图3所示，以终端为UE进行举例说明，UE1信道接入成功之后，可以将获取的COT1共享给其他UE，比如共享给图中的UE2和UE3，UE1在进行COT共享时，通过侧链路控制信令指示第一时长，该第一时长可以是COT1的剩余时长，即是UE1在COT1内传输数据所使用时域资源结束后的第一个时隙的第一个符号到COT1结束时间之间的时长。UE2接收UE1发送的侧链路控制信令，并占用共享的COT1时，UE2也可以通过侧链路控制信令指示COT1的剩余时长，该UE2指示的COT1的剩余时长是UE2在COT1内传输数据所使用时域资源结束后的第一个时隙的第一个符号到COT1结束时间之间的时长。UE3解码UE1和/或UE2的侧链路控制信令并使用共享的COT1，UE3也可以进一步通过侧链路控制信令指示COT1的剩余时长，该UE3指示的COT1的剩余时长是UE3在COT1内传输数据所使用时域资源结束后的第一个时隙的第一个符号到COT1结束时间之间的时长，如图3所示，各个UE所指示的第一时长可以是不同的。
本申请实施例中的第二终端可以是图3中的UE1，即该COT1是第二终端通过LBT获取的，第二终端还可以是图3中的UE2或UE3，即该COT1是第三终端(UE1)通过LBT获取的，第二终端是占用第三终端共享的COT1。
进一步可选的，第二终端在通过侧链路控制信令中的第一指示信息指示第一时长时，还可以在该侧链路控制信令中指示共享的COT的标识。通过在侧链路控制信令中指示共享的COT的标识可区分图4和图5所示场景，如图4所示，UE1通过LBT获得COT1并在COT1中发送数据，但是COT1提前终止，UE2提供共享的COT2，该UE2可以发送包括COT2的标识的侧链路控制信令，UE1接收该侧链路控制信令，并通过该侧链路控制信令中的COT2的标识，确定可用的COT不是提前终止的COT1，而是COT2，该UE1可以通过COT2传输数据，不需要重新竞争信道。如图5所示，UE1通过LBT获得COT1并在COT1中发送数据，UE1将COT1共享给其他UE(比如UE2和UE3)，而如果UE1需要再次发送数据，则不能在已分享的COT1中发送数据，虽然UE1接收到其他UE发送的包 含COT1的剩余时长的侧链路控制信令，该UE1通过COT1的标识，确定不能使用该COT1，而需要重新通过LBT竞争信道。
可选的，本申请的COT的标识可以是共享该COT的终端设备的源标识码source ID，其中，共享该COT的终端设备是指通过LBT获取该COT的终端设备。可选的，该源标识码source ID可以是共享该COT的终端设备发送的第二阶SCI中所包含的source ID。
在一些可能的实现方式中，第二终端发送的用于指示第一时长的侧链路控制信令可以为第一格式的侧链路控制信令，该第一格式的侧链路控制信令用于指示对COT进行共享，即第二终端发送共享COT专用的SCI，该专用的SCI可以不用随数据一起传输，可选的，该专用的SCI可以传输一次，而不用连续多次传输中每次传输的SCI中都携带COT共享信息。
该专用的SCI可以是一种新的第一阶SCI，即新的1st-stage SCI format，或者是一种新的第二阶SCI，即新的2nd-stage SCI format，该专用的SCI用于指示COT共享信息，该专用的SCI至少包括用于承载COT的标识的字段，例如COT ID indicator，还包括用于承载第一时长的字段，例如COT duration indicator，可选的，还包括用于承载时间间隔的字段，例如COT sharing offset，该时间间隔用于指示COT起始时域位置与接收到该SCI的时间之间的时间间隔。
在一些可能的实现方式中，第二终端发送的用于指示第一时长的侧链路控制信令可以为第二格式的侧链路控制信令，该第二格式的侧链路控制信令用于指示对数据进行调度，即不用设计专用的SCI，而在用于调度数据的SCI中增加COT共享信息，即增加用于承载COT的标识的字段，例如COT ID indicator，还增加用于承载第一时长的字段，例如COT duration indicator，可选的，还增加用于承载时间间隔的字段，例如COT sharing offset，该时间间隔用于指示COT起始时域位置与接收到该SCI的时间之间的时间间隔。在每次调度传输数据的SCI中都携带该COT共享信息。
S203，所述第一终端确定起始时域位置，并在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。
本申请实施例中，第一终端确定起始时域位置的方式需要与第二终端确定第一时长的方式对应，比如，可以预先定义第二终端是通过哪种方式确定第一时长，下面分别介绍第一终端确定起始时域位置的各种方式，该各种方式与第二终端确定第一时长的各种方式对应：
方式5，对应于前述实施例中的方式1，第一终端将接收侧链路控制信令的时间所在时间单元的第一个符号作为起始时域位置，或者，第一终端将接收侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号作为起始时域位置。
方式6，对应于前述实施例中的方式2，第一终端获取第二终端在侧链路控制信令中指示的时间间隔，并根据接收该侧链路控制信令的时间和该时间间隔确定起始时域位置，该时间间隔是指起始时域位置与接收该侧链路控制信令的时间之间的时间间隔，该时间间隔可以是以时隙为单位。
方式7，对应于前述实施例中的方式3，第一终端从所接收的侧链路控制信令中获取第二终端指示的时域资源，并根据该时域资源确定起始时域位置，比如，起始时域位置是 该第二终端指示的时域资源结束后的下一个时间单元的第一个符号。需要说明的是，如果第二终端指示多个时域资源，则起始时域位置可以是该指示的多个时域资源中的最后一个时域资源结束后的下一个时间单元的第一个符号。
方式8，对应于前述实施例中的方式4，第二终端发送的侧链路控制信令中包括起始时域位置，则第一终端可以从所接收的侧链路控制信令中获取起始时域位置。
第一终端通过侧链路控制信令中的第一指示信息确定第一时长，并在起始时域位置和第一时长所确定的时域资源内进行侧链路通信。其中，如果第一指示信息是索引值，则第一终端需要根据索引值获取对应的第一时长。
本申请实施例中，第一终端接收第二终端发送的侧链路控制信令，该侧链路控制信令包括第一指示信息，该第一指示信息用于指示可共享的COT的持续时长或剩余时长，该第一终端可以在根据起始时域位置和第一时长所确定的时域资源内进行通信，通过本申请终端之间可以相互共享COT，从而提高资源利用率。
请参见图6，图6是本申请实施例提供的一种通信装置的结构示意图。该装置可以是第一终端，也可以是第一终端中的装置，或者是能够和第一终端匹配使用的装置。图6所示的通信装置600可以包括处理单元601和通信单元602。其中，处理单元601，用于进行数据处理。通信单元602集成有接收单元和发送单元。通信单元602也可以称为收发单元。或者，也可将通信单元602拆分为接收单元和发送单元。下文的处理单元601和通信单元602同理，下文不再赘述。其中：
通信单元602，用于接收第二终端发送的侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
处理单元601，用于确定起始时域位置；
通信单元602，用于在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。
在一种可选的实施方式中，所述侧链路控制信令还包括所述COT的标识。
在一种可选的实施方式中，所述第一指示信息包括索引值，所述索引值用于所述第一终端获取所述第一时长；或者，
所述第一指示信息包括所述第一时长。
在一种可选的实施方式中，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示所述起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔；
所述起始时域位置是根据所述第一终端接收所述侧链路控制信令的时间和所述时间间隔确定的位置。
在一种可选的实施方式中，所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的第一个符号；或者，
所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号。
在一种可选的实施方式中，所述侧链路控制信令还包括第三指示信息，所述第三指示信息用于指示所述第二终端在所述COT中传输数据的时域资源；
所述起始时域位置是所述时域资源结束后的下一个时间单元的第一个符号。
在一种可选的实施方式中，所述侧链路控制信令为第一格式的侧链路控制信令；所述第一格式的侧链路控制信令用于指示对所述COT进行共享。
在一种可选的实施方式中，所述侧链路控制信令为第二格式的侧链路控制信令；所述第二格式的侧链路控制信令用于对数据进行调度。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处不再详述。
请参见图6，图6是本申请实施例提供的一种通信装置的结构示意图。该装置可以是第二终端，也可以是第二终端中的装置，或者是能够和第二终端匹配使用的装置。图6所示的通信装置600可以包括处理单元601和通信单元602。其中，处理单元601，用于进行数据处理。通信单元602集成有接收单元和发送单元。通信单元602也可以称为收发单元。或者，也可将通信单元602拆分为接收单元和发送单元。下文的处理单元601和通信单元602同理，下文不再赘述。其中：
处理单元601，用于确定第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
通信单元602，用于发送侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示所述第一时长。
在一种可选的实施方式中，所述侧链路控制信令中还包括所述COT的标识。
在一种可选的实施方式中，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔。
在一种可选的实施方式中，所述COT是所述第二终端或第三终端通过先听后说LBT获取的；
其中，所述第二终端在所述COT内传输数据。
在一种可选的实施方式中，如果所述COT是所述第二终端通过LBT获取的，所述COT的标识为所述第二终端的源标识码；或者，
如果所述COT是所述第三终端通过LBT获取的，所述COT的标识为所述第三终端的源标识码。
其中，该实施方式的相关内容可参见上述方法实施例的相关内容。此处不再详述。
请参见图7，图7是本申请实施例提供的另一种通信装置的结构示意图，用于实现上述图2中第一终端的功能。该通信装置700可以是第一终端或用于第一终端的装置。用于第一终端的装置可以为终端内的芯片系统或芯片。其中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
或者，通信装置700，用于实现上述图2中第二终端的功能。该通信装置可以是第二终端或用于第二终端的装置。用于第二终端的装置可以为网络设备内的芯片系统或芯片。
通信装置700包括至少一个处理器720，用于实现本申请实施例提供的方法中第一终端或第二终端的数据处理功能。装置700还可以包括通信接口710，用于实现本申请实施例提供的方法中第一终端或第二终端的收发操作。在本申请实施例中，处理器720可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。在本申请实施例中，通信接口710可以是收发器、电路、总线、模块或其它类型的通信接口，用于通过传输介质和其它设备进行通信。例如，通信接口710用于装置700中的装置可以和其它设备进行通信。处理器720利用通信接口710收发数据，并用于实现上述方法实施例图2所述的方法。
通信装置700还可以包括至少一个存储器730，用于存储程序指令和/或数据。存储器730和处理器720耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器720可能和存储器730协同操作。处理器720可能执行存储器730中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中。
当通信装置700开机后，处理器720可以读取存储器730中的软件程序，解释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720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(图未示意)，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到装置700时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器720，处理器720将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器720而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
本申请实施例中不限定上述通信接口710、处理器720以及存储器730之间的具体连接介质。本申请实施例在图7中以存储器730、处理器720以及通信接口710之间通过总线740连接，总线在图7中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图7中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通信装置700具体是用于终端时，例如通信装置700具体是芯片或者芯片系统时，通信接口710所输出或接收的可以是基带信号。通信装置700具体是终端时，通信接口710所输出或接收的可以是射频信号。
需要说明的是，该通信装置可以执行前述方法实施例中第一终端或第二终端的相关步骤，具体可参见上述各个步骤所提供的实现方式，在此不再赘述。
对于应用于或集成于通信装置的各个装置、产品，其包含的各个模块可以都采用电路等硬件的方式实现，不同的模块可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块可以采用电路等硬件方式实现。
上述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，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static ram，SRAM)、动态随机存取存储器(dynamic random access memory，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)。
本申请实施例提供一种芯片。该芯片包括：处理器和存储器。其中，处理器的数量可以是一个或多个，存储器的数量可以是一个或多个。处理器通过读取存储器上存储的指令和数据，可执行上述如图2所示的侧链路通信方法，以及相关实施方式所执行的步骤。
如图8所示，图8是本申请实施例提供的一种模组设备的结构示意图。该模组设备800可以执行前述方法实施例中第一终端或第二终端的相关步骤，该模组设备800包括：通信模组801、电源模组802、存储模组803以及芯片模组804。其中，电源模组802用于为模组设备提供电能；存储模组803用于存储数据和指令；通信模组801用于进行模组设备内部通信，或者用于模组设备与外部设备进行通信；芯片模组804可执行上述如图2所示的侧链路通信方法，以及相关实施方式所执行的步骤。
本申请实施例中还提供一种计算机可读存储介质。所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令被处理器执行时，可执行上述图2所示的侧链路通信方法，以及相关实施方式所执行的步骤。
所述计算机可读存储介质可以是前述任一实施例所述的终端设备或网络设备的内部存储单元，例如设备的硬盘或内存。所述计算机可读存储介质也可以是所述终端设备或网络设备的外部存储设备，例如所述设备上配备的插接式硬盘，智能存储卡(smart media card，SMC)，安全数字(secure digital，SD)卡，闪存卡(flash card)等。进一步地，所述计算机可读存储介质还可以既包括所述终端设备或网络设备的内部存储单元也包括外部存储设备。所述计算机可读存储介质用于存储所述计算机程序以及所述终端设备或网络设备所需的其他程序和数据。所述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。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合的服务器、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，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质。半导体介质可以是固态硬盘。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机 程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。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或无线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。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，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，在本发明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包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元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)执行本发明各个实施例所述方法的部分步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本申请一种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于申请所涵盖的范围。

Claims (22)

  1. 一种侧链路通信方法，其特征在于，包括：
    第一终端接收第二终端发送的侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
    所述第一终端确定起始时域位置，并在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。
  2. 如权利要求1所述的方法，其特征在于，所述侧链路控制信令还包括所述COT的标识。
  3. 如权利要求1所述的方法，其特征在于，所述第一指示信息包括索引值，所述索引值用于所述第一终端获取所述第一时长；或者，
    所述第一指示信息包括所述第一时长。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示所述起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔；
    所述起始时域位置是根据所述第一终端接收所述侧链路控制信令的时间和所述时间间隔确定的位置。
  5. 如权利要求1-3任一项所述的方法，其特征在于，所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的第一个符号；或者，
    所述起始时域位置是所述第一终端接收所述侧链路控制信令的时间所在时间单元的下一个时间单元的第一个符号。
  6. 如权利要求1-3任一项所述的方法，其特征在于，所述侧链路控制信令还包括第三指示信息，所述第三指示信息用于指示所述第二终端在所述COT中传输数据的时域资源；
    所述起始时域位置是所述时域资源结束后的下一个时间单元的第一个符号。
  7. 如权利要求1-3任一项所述的方法，其特征在于，所述侧链路控制信令为第一格式的侧链路控制信令；所述第一格式的侧链路控制信令用于指示对所述COT进行共享。
  8. 如权利要求1-3任一项所述的方法，其特征在于，所述侧链路控制信令为第二格式的侧链路控制信令；所述第二格式的侧链路控制信令用于对数据进行调度。
  9. 一种侧链路通信方法，其特征在于，包括：
    第二终端确定第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
    所述第二终端发送侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示所述第一时长。
  10. 如权利要求9所述的方法，其特征在于，所述侧链路控制信令中还包括所述COT的标识。
  11. 如权利要求9或10述的方法，其特征在于，所述侧链路控制信令还包括第二指示信息，所述第二指示信息用于指示起始时域位置与所述第一终端接收所述侧链路控制信令的时间之间的时间间隔。
  12. 如权利要求10所述的方法，其特征在于，所述COT是所述第二终端或第三终端通过先听后说LBT获取的；
    其中，所述第二终端在所述COT内传输数据。
  13. 如权利要求12所述的方法，其特征在于，如果所述COT是所述第二终端通过LBT获取的，所述COT的标识为所述第二终端的源标识码；或者，
    如果所述COT是所述第三终端通过LBT获取的，所述COT的标识为所述第三终端的源标识码。
  14. 一种通信装置，其特征在于，包括：
    通信单元，用于接收第二终端发送的侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
    处理单元，用于确定起始时域位置；
    所述通信单元还用于在所述起始时域位置和所述第一时长确定的时域资源内进行侧链路通信。
  15. 如权利要求14所述的装置，其特征在于，所述侧链路控制信令还包括所述COT的标识。
  16. 如权利要求14所述的装置，其特征在于，所述第一指示信息包括索引值，所述索引值用于所述第一终端获取所述第一时长；或者，
    所述第一指示信息包括所述第一时长。
  17. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第一时长，所述第一时长包括信道占用时间COT的持续时长或COT的剩余时长；
    通信单元，用于发送侧链路控制信令，所述侧链路控制信令包括第一指示信息，所述第一指示信息用于指示所述第一时长。
  18. 如权利要求17所述的装置，其特征在于，所述侧链路控制信令中还包括所述COT的标识。
  19. 一种通信装置，其特征在于，所述通信装置包括处理器和存储器，所述处理器和所述存储器相互连接，其中，所述存储器用于存储计算机程序，所述计算机程序包括程序指令，所述处理器被配置用于调用所述程序指令，执行如权利要求1至8任一项所述的方法，或者执行如权利要求9至13任一项所述的方法。
  20. 一种芯片，其特征在于，所述芯片包括处理器与接口，所述处理器和所述接口耦合；所述接口用于接收或输出信号，所述处理器用于执行代码指令，以使权利要求1至8中任一项所述的方法被执行，或以使权利要求9至13中任一项所述的方法被执行。
  21. 一种模组设备，其特征在于，所述模组设备包括通信模组、电源模组、存储模组以及芯片模组，其中：
    所述电源模组用于为所述模组设备提供电能；
    所述存储模组用于存储数据和指令；
    所述通信模组用于进行模组设备内部通信，或者用于所述模组设备与外部设备进行通信；
    所述芯片模组用于执行如权利要求1至8任一项所述的方法，或者执行如权利要求9至13任一项所述的方法。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被处理器执行时使所述处理器执行如权利要求1至8任一项所述的方法，或者执行如权利要求9至13任一项所述的方法。
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