WO2023056822A1 - 通信方法、装置、设备以及存储介质 - Google Patents

通信方法、装置、设备以及存储介质 Download PDF

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Publication number
WO2023056822A1
WO2023056822A1 PCT/CN2022/117743 CN2022117743W WO2023056822A1 WO 2023056822 A1 WO2023056822 A1 WO 2023056822A1 CN 2022117743 W CN2022117743 W CN 2022117743W WO 2023056822 A1 WO2023056822 A1 WO 2023056822A1
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WIPO (PCT)
Prior art keywords
information
feedback
sidelink
time domain
cot
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PCT/CN2022/117743
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English (en)
French (fr)
Inventor
杨帆
黄海宁
张天虹
黎超
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华为技术有限公司
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Publication of WO2023056822A1 publication Critical patent/WO2023056822A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access

Definitions

  • the present application relates to the technical field of communication, and in particular, to a communication method, device, device and storage medium.
  • signaling and data can be transmitted between terminal devices through sidelinks.
  • This manner of performing transmission through the sidelink may be called sidelink transmission.
  • the terminal device When the terminal device performs sidelink transmission on the unlicensed spectrum, whether it is transmitting the initial transmission or retransmission of the same transport block (TB), or transmitting different TBs, if the transmission interval exceeds the threshold (for example, 16us ) requires clear channel assessment. Moreover, when the terminal device fails to evaluate the idle channel, the terminal device fails to access the channel, and the corresponding TB cannot be transmitted.
  • the threshold for example, 16us
  • a communication method, device, device, and storage medium provided in the embodiments of the present application can perform sidelink transmission on an unlicensed frequency spectrum, thereby improving transmission efficiency and transmission reliability.
  • the embodiment of the present application provides a communication method, including: the first terminal device sends M pieces of sideline information and receives N pieces of sideline information within the channel occupancy time (Channel Occupancy Time, COT), the COT includes L time domain units, M and N are integers greater than or equal to 0 and M and N are not 0 at the same time, and L is an integer greater than 1.
  • COT Channel Occupancy Time
  • the first terminal device transmits side information between other terminal devices in the COT, avoiding the problem that the transmitted side information needs to re-evaluate the idle channel because the time domain interval is greater than the threshold, The frequency of idle channel assessment is reduced, and at the same time, the problem that data cannot be sent due to the failure of idle channel assessment is avoided, and the reliability of transmission is improved.
  • the M pieces of sidelink information and the N pieces of sidelink information include at least one piece of first sidelink information, where the first sidelink information includes sidelink feedback information and carries the sidelink feedback information
  • the feedback resource is configured by the network device or indicated by sidelink control information in any sidelink information or preconfigured.
  • the transmission delay of the feedback information is reduced.
  • the time domain position of the feedback resource is related to the time domain length of the COT.
  • the first terminal device and/or the second terminal device determine the time-domain position of the feedback resource according to the time-domain length of the COT, thereby realizing flexible scheduling of the feedback resource.
  • the feedback resource includes a first feedback resource for sending sidelink feedback information
  • the first feedback resource is included in at least one of the following time domain units: the first time domain unit in the COT ;
  • the time domain unit m in the COT the value of the m is determined according to the minimum time interval N gap of the lateral feedback and the initial time domain unit of the COT;
  • the time domain unit k in the COT the value of the k It is determined according to the minimum time interval N gap of the sidelink feedback and the receiving position of the COT of the sidelink data information responded to by the sidelink feedback information.
  • the n PSSCH is an index of a time-domain unit for receiving the sidelink data information in the COT.
  • the feedback resource includes a second feedback resource for receiving sidelink feedback information; the second feedback resource is included in at least one of the following time domain units: the last time domain unit in the COT; For the time domain unit n in the COT, the value of n is determined according to the period N PSFCH of the sidelink feedback and the initial time domain unit of the COT.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information
  • the first information in the sideline control information is used to indicate that the sideline Whether the time domain unit where the side line information is located includes feedback resources or whether the side line information includes side line feedback information; the first information indicates that the time domain unit where the side line information is located includes feedback resources or the side line information includes feedback information , the side row information is the first side row information.
  • the first terminal device combines dynamic indication on the basis of semi-persistent scheduling, so that the second terminal device determines whether the time domain unit where the current sidelink information is located includes feedback resources.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information
  • the second information in the sideline control information is used to indicate the following One:
  • the time domain unit where the sidelink information is located does not include feedback resources;
  • the time domain unit where the sidelink information is located includes feedback resources, and the feedback resources include the first feedback resource used to send sidelink feedback information, the sidelink
  • the information is first sidelink information;
  • the time domain unit where the sidelink information is located includes feedback resources, and the feedback resources include second feedback resources for receiving sidelink feedback information, and the sidelink information is the first sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the third information in the sideline control information is used to indicate the next The location of the second feedback resource used to receive sidelink feedback information.
  • the second terminal device can determine the position of the next second feedback resource in advance by receiving the third information, ensuring that the second terminal device can normally send sidelink feedback information on the second feedback resource, and improving transmission reliability.
  • the third information includes an offset value indicating the next second feedback resource used to receive the sidelink feedback information relative to the time domain unit carrying the sidelink information.
  • the first information can be used to receive the sideline feedback information in the next When the offset value of the second feedback resource is less than or equal to the minimum time interval of the feedback constraint, the offset value indicating the next second feedback resource is included, and the next second feedback resource used to receive the sidelink feedback information When the offset value is greater than the minimum time interval of the feedback constraint, it includes indicating the range of the offset value of the next second feedback resource. For details, see the following possible implementation methods:
  • the offset value of the next second feedback resource for receiving the sidelink feedback information is less than or equal to the minimum time interval of the feedback constraint, and the third information includes indicating the next second feedback resource for receiving the sidelink feedback information The offset value of the resource; or, the offset value of the next second feedback resource used to receive the sidelink feedback information is greater than the minimum time interval of the feedback constraint, and the third information includes indicating that the next one used to receive the sidelink feedback information The range of the offset value of the second feedback resource of the feedback information.
  • the sidelink feedback information is feedback from the second terminal device to the second sidelink information sent by the first terminal device.
  • the first terminal device can send sidelink feedback information alone, and when there is sidelink data information and/or sidelink control information that needs to be sent, it can send the The sidelink feedback information and sidelink data information and/or sidelink control information are sent continuously. If multiple pieces of sidelink feedback information are carried in the same feedback resource, the target terminal devices of the multiple pieces of sidelink feedback information may be the same or different.
  • the first terminal device may instruct the target terminal device by feeding back indication information, for example, including the following three possible implementation manners
  • the side track feedback information in the side track information includes feedback indication information
  • the feedback indication information includes at least one of the following: information indicating an identification ID of a third terminal device, where the third terminal device is The target terminal receiving the sidelink feedback information; the information indicating the HARQ process ID of the hybrid automatic repeat request.
  • the sidelink feedback information in the sidelink information includes feedback indication information, and the feedback indication information is used to indicate a resource location of the fed back sidelink data information.
  • the feedback indication information includes at least one of the following: indicating time domain unit interval information between the sidelink data information and the sidelink feedback information; indicating frequency domain information of the sidelink data information .
  • the frequency domain information of the sidelink data information includes a resource block PRB index of the sidelink data or a difference between a PRB of the sidelink data and a PRB at an edge of a resource pool.
  • the sidelink feedback information in the sidelink information is feedback to at least one sidelink information received in the first time-frequency range, and the at least one sidelink information is received by the first terminal device Sideline information from at least one third terminal device.
  • the sidelink feedback information includes feedback indication information
  • the feedback indication information includes an index of a time-frequency position of the at least one piece of sidelink information.
  • the first terminal device can feed back the sidelink information received in the first time-frequency range, and the receiving ends of the feedback information can be the same or different terminal devices.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the fourth information in the sideline control information is used to determine whether to carry the The location of side information resource in this COT.
  • the n pieces of side information include third side information and at least one fourth side information
  • the third side information is side information to be sent currently
  • the information is side line information within a preset time period before the time domain position of the third side line information.
  • the preset duration is less than or equal to the packet delay budget PDB of the fourth sidelink information.
  • the fourth information includes at least one of the following: the time domain length of the COT, the time domain length of the COT includes the number L of time domain units of the COT; the time domain carrying the side information The time-domain unit index of the unit in the COT; the remaining time-domain length of the COT, the remaining time-domain length including the number of remaining time-domain units of the COT; the index of the sideline information transmission.
  • the embodiment of the present application provides a communication method, including: the second terminal device receives side information sent by the first terminal device in the COT, the COT includes L time domain units, and L is an integer greater than 1; The second terminal device determines feedback resources according to the sidelink information, and the feedback resources are used to receive or send sidelink feedback information.
  • the sidelink information includes sidelink control information, where the sidelink control information is used to instruct the second terminal device to receive or send feedback resources for sidelink feedback information in the COT.
  • the first information in the sidelink control information is used to indicate whether the time domain unit where the sidelink information is located includes feedback resources or whether the sidelink information includes feedback information; or, the sidelink information includes feedback resources;
  • the second information in the line control information is used to indicate one of the following: the time domain unit where the side line information is located does not include feedback resources; the time domain unit where the side line information is located includes feedback resources, and the feedback resources include The first feedback resource of the sidelink feedback information; the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving the sidelink feedback information.
  • the third information in the sidelink control information is used to indicate the position of the next second feedback resource for receiving sidelink feedback information.
  • the method further includes: the second terminal device receiving sidelink feedback information sent by the first terminal device at the first feedback resource; and/or, the second terminal device receiving at the first feedback resource The second feedback resource sends sidelink feedback information to the first terminal device.
  • the embodiment of the present application provides a communication device, including: a processing unit, configured to determine M pieces of side information and N pieces of side information, where M and N are integers greater than or equal to 0 and M and N are not simultaneously is 0; the transceiver unit is used to send M pieces of sideline information and receive N pieces of sideline information in the COT, the COT includes L time domain units, and L is an integer greater than 1.
  • the M pieces of sidelink information and the N pieces of sidelink information include at least one piece of first sidelink information, where the first sidelink information includes sidelink feedback information and carries the sidelink feedback information
  • the feedback resource is configured by the network device or indicated by sidelink control information in any sidelink information or preconfigured.
  • the time domain position of the feedback resource is related to the time domain length of the COT.
  • the feedback resource includes a first feedback resource for sending sidelink feedback information, and the first feedback resource is included in at least one of the following time domain units:
  • the first time domain unit within the COT is the first time domain unit within the COT
  • the time domain unit m in the COT the value of the m is determined according to the minimum time interval N gap of the lateral feedback and the initial time domain unit of the COT;
  • the value of k is determined according to the minimum time interval N gap of the sidelink feedback and the receiving position of the sidelink data information to which the sidelink feedback information responds in the COT.
  • the n PSSCH is an index of a time-domain unit for receiving the sidelink data information in the COT.
  • the feedback resource includes a second feedback resource for receiving sidelink feedback information; the second feedback resource is included in at least one of the following time domain units:
  • the value of n is determined according to the period N PSFCH of the sidelink feedback and the initial time domain unit of the COT.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the first information in the sideline control information is used to indicate that the sideline Whether the time domain unit where the line information is located includes feedback resources or whether the side line information includes side line feedback information;
  • the sidelink information is the first sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the second information in the sideline control information is used to indicate the following one:
  • the time domain unit where the lateral information is located does not include feedback resources
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a first feedback resource for sending sidelink feedback information, and the sidelink information is the first sidelink information;
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving sidelink feedback information, and the sidelink information is the first sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the third information in the sideline control information is used to indicate the next The location of the second feedback resource used to receive sidelink feedback information.
  • the third information includes an offset value indicating the next second feedback resource used to receive the sidelink feedback information relative to the time domain unit carrying the sidelink information.
  • the offset value of the next second feedback resource used to receive the sidelink feedback information is less than or equal to the minimum time interval of the feedback constraint
  • the third information includes indicating that the next second feedback resource used to receive the sidelink feedback information The offset value of the second feedback resource of the sidelink feedback information; or, the offset value of the next second feedback resource used to receive the sidelink feedback information is greater than the minimum time interval of the feedback constraint, and the third information includes Indicates the range of the offset value of the next second feedback resource used to receive the sidelink feedback information.
  • the sidelink feedback information is feedback from the second terminal device to the second sidelink information sent by the first terminal device.
  • the side track feedback information in the side track information includes feedback indication information
  • the feedback indication information includes at least one of the following:
  • the sidelink feedback information in the sidelink information includes feedback indication information, and the feedback indication information is used to indicate a resource location of the fed back sidelink data information.
  • the feedback indication information includes at least one of the following:
  • the frequency domain information of the sidelink data information includes a resource block PRB index of the sidelink data or a difference between a PRB of the sidelink data and a PRB at an edge of a resource pool.
  • the sidelink feedback information in the sidelink information is feedback to at least one sidelink information received in the first time-frequency range, and the at least one sidelink information is received by the first terminal device.
  • sideline information from at least one third terminal device.
  • the sidelink feedback information includes feedback indication information
  • the feedback indication information includes an index of a time-frequency position of the at least one piece of sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the fourth information in the sideline control information is used to determine whether to carry the The location of side information resource in this COT.
  • the fourth information includes at least one of the following:
  • the time domain length of the COT includes the number L of time domain units of the COT;
  • the remaining time domain length of the COT includes the number of remaining time domain units of the COT;
  • the embodiment of the present application provides a communication device, including: a transceiver unit, configured to receive side information sent by the first terminal device in the COT, the COT includes L time domain units, and L is an integer greater than 1 a processing unit, configured to determine feedback resources according to the sidelink information, where the feedback resources are used to receive or send sidelink feedback information.
  • the sidelink information includes sidelink control information, where the sidelink control information is used to instruct the second terminal device to receive or send feedback resources for sidelink feedback information in the COT.
  • the first information in the sidelink control information is used to indicate whether the time domain unit where the sidelink information is located includes feedback resources or whether the sidelink information includes feedback information; or,
  • the second information in the lateral control information is used to indicate one of the following:
  • the time domain unit where the lateral information is located does not include feedback resources
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a first feedback resource for sending sidelink feedback information;
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving sidelink feedback information.
  • the third information in the sidelink control information is used to indicate the position of the next second feedback resource for receiving sidelink feedback information.
  • the transceiver unit is also used for:
  • the embodiment of the present application provides a communication device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the communication device as described in the first aspect or A method in each possible implementation manner of the first aspect.
  • an embodiment of the present application provides a communication device, including: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, to perform the communication as described in the second aspect or A method in each possible implementation manner of the second aspect.
  • the embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from the memory, so that the device installed with the chip executes the first aspect or each possible implementation manner of the first aspect method in .
  • the embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from the memory, so that the device installed with the chip executes the second aspect or each possible implementation manner of the second aspect method in .
  • the embodiments of the present application provide a computer-readable storage medium for storing computer program instructions, and the computer program causes the computer to execute the method in the first aspect or in each possible implementation manner of the first aspect.
  • the embodiments of the present application provide a computer-readable storage medium for storing computer program instructions, and the computer program causes a computer to execute the method in the second aspect or each possible implementation manner of the second aspect.
  • an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the method in the first aspect or in each possible implementation manner of the first aspect.
  • an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the method in the second aspect or in each possible implementation manner of the second aspect.
  • FIG. 1 shows a schematic diagram of a communication system 100 applicable to a sidelink transmission method according to an embodiment of the present application
  • FIG. 2a is a schematic diagram of sidewalk transmission of an unlicensed spectrum provided by the present application.
  • FIG. 2b is a schematic diagram of sidewalk transmission of another unlicensed spectrum provided by the present application.
  • FIG. 2c is a schematic diagram of sidewalk transmission of another unlicensed spectrum provided by the present application.
  • FIG. 3a is a schematic diagram of combined sidewalk transmission of an unlicensed spectrum provided by the present application.
  • Figure 3b is a schematic diagram of another combined sidewalk transmission of unlicensed spectrum provided by the present application.
  • FIG. 4 is a schematic diagram of an interaction process of a communication method 200 provided in an embodiment of the present application.
  • Fig. 5 is an exemplary COT structure provided by the embodiment of the present application.
  • FIG. 6 is a schematic diagram of a lateral transmission provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a feedback resource time-frequency position indication provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a first time-frequency range provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is another schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the communication method provided by this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, wideband code division multiple access ( Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity ( Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and can also be applied to an independent (Standalone, SA ) meshing scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent meshing scene
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to a licensed spectrum, Wherein, the licensed spectrum can also be regarded as a non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • eNB evolved base station
  • gNB base station
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite, balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, in water, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • Fig. 1 shows a schematic diagram of a communication system applicable to the sidelink transmission method of the embodiment of the present application.
  • a communication system 100 may include at least one network device and multiple terminal devices, for example, the network device 110 and the terminal devices 121 to 123 shown in FIG. 1 .
  • the network device 110 and the terminal devices 121 to 123 can communicate through wireless air interfaces respectively, and the terminal devices can communicate with each other through the vehicle wireless communication technology.
  • the terminal device 121 and the terminal device 122 shown in FIG. 1 may communicate with each other, and the terminal device 121 and the terminal device 123 may also communicate with each other.
  • FIG. 1 is only an example, showing a scenario where terminal device 121 sends signaling and/or data to terminal device 122 and terminal device 123 sends signaling and/or data to terminal device 121, but this should not apply to the present application constitute any limitation. There may also be signaling and/or data interaction between the terminal device 122 and the terminal device 123 . This embodiment of the present application does not limit it.
  • Fig. 1 is only an example, showing one network device and four terminal devices. But this should not constitute any limitation to the present application.
  • the communication system 100 may also include more network devices, and may also include more or less terminal devices. This embodiment of the present application does not limit it.
  • data and signaling can be transmitted between terminal devices through sidelinks.
  • the resources used by the terminal device to communicate via the sidelink may be allocated by the network device.
  • the network device allocates resources for sidelink transmissions.
  • terminal device 121 in FIG. 1 may send signaling and/or data to terminal device 122 through resources allocated by the network device, and terminal device 121 may send signaling and/or data to terminal device 123 through resources allocated by the network device.
  • Sidelink for signaling and/or data interaction between terminal devices, including the following channel types: Physical Sidelink Control Channel (PSCCH), Physical Sidelink All or part of the Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Broadcast Channel (PSBCH) and Physical Sidelink Feedback Channel (PSFCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink All or part of the Physical Sidelink Shared Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • PSFCH Physical Sidelink Feedback Channel
  • the PSCCH carries the first level control information
  • the PSSCH carries the second level control information and/or data
  • the PSFCH carries the feedback information.
  • the network device can allocate resources for the sidelink through the following two modes:
  • Mode (mode) 1 the network device can schedule resources to the terminal device for sidelink transmission.
  • the network device 110 shown in FIG. 1 may schedule resources for the terminal device 121 and the terminal device 122 to perform sidelink transmission respectively.
  • the terminal device can select resources from the resources preconfigured by the network device for sidelink transmission.
  • the terminal device 121 and the terminal device 122 in FIG. 1 may respectively select resources from resources preconfigured by the network device to perform sidelink transmission.
  • the selection of resources by the terminal device may include the following three methods: resource selection based on full sensing, resource selection based on partial sensing, and random selection.
  • radio access technology radio access technology
  • RAT radio access technology
  • cellular networks such as 5G networks, LTE networks
  • WiFi networks can share this spectrum.
  • access devices such as base stations, UEs, APs
  • CCA Clear Channel Assessment
  • the access device can use the channel for transmission.
  • Listen Before Talk is also a way of vacant channel assessment. The following uses LBT as an example to illustrate.
  • the above two resource allocation modes both perform resource selection or scheduling at the granularity of time slots, that is, each transmission of the terminal device occupies a time slot in the time domain.
  • the sidelink data information (for example, it may be a transport block (TB)) sent by the terminal device, whether it is an initial transmission or a retransmission of the same TB, Whether different TBs are sent, LBT may be performed because the sending interval exceeds the threshold.
  • TB transport block
  • the terminal device needs to perform LBT to check the channel before the initial transmission of TB1 and the initial transmission of TB2. Occupancy; especially when SL hybrid automatic repeat request (HARQ) is enabled, there is a time interval 1 between the initial transmission of TB1 and the reception of sideline feedback information, and the reception of sideline feedback information and retransmission of TB1 There is a time interval 2 between them, resulting in a large time interval between the initial transmission TB1 and the retransmission TB1, and the terminal device needs to perform LBT for a long time when sending the retransmission, as shown in Figure 2b.
  • HARQ SL hybrid automatic repeat request
  • a terminal device when a terminal device needs to send multiple different TBs, it needs to perform multiple LBTs, and if the LBT fails, the corresponding TBs cannot be transmitted. As shown in FIG. 2c, TB1 cannot be sent due to the failure of the LBT of the terminal device (marked by a dotted line).
  • the terminal device When the terminal device needs to access the channel multiple times, the terminal device frequently performs LBT to detect whether the channel is idle, resulting in low transmission efficiency; the failure of the terminal device LBT causes the corresponding data to fail to be transmitted. Therefore, in order to support sidelink transmission on the unlicensed spectrum, how to reduce the number of LBTs, improve transmission efficiency, and improve transmission reliability is an urgent problem to be solved.
  • the receiving end device feeds back to the sending end device whether the data sent by the sending end device is successfully decoded, and the sending end device can According to the HARQ feedback information sent by the receiving end device, it is determined whether data retransmission is required. It takes a certain amount of time for the receiving device to decode the received data and generate HARQ feedback information, that is, there is a time interval between receiving data and sending feedback information. If other access devices access and preempt the HARQ Authorized channel, the receiving end device will not be able to send HARQ feedback information to the sending end device in time.
  • HARQ hybrid automatic repeat request
  • the embodiment of the present application introduces Channel Occupancy Time (Channel Occupancy Time, COT) in the sidelink transmission, and the terminal device transmits sidelink information (including signaling and/or data) between other terminal devices in the COT, Avoid the problem that the transmitted side information needs to be re-assessed by the idle channel because the time domain interval is greater than the threshold (for example, 16us), reduce the frequency of the idle channel assessment, and avoid the problem that the data cannot be sent due to the failure of the idle channel assessment, and improve transmission reliability.
  • COT Channel Occupancy Time
  • the embodiment of the present application receives or sends the feedback information in the COT in order to solve the problem of a relatively long time delay in transmitting the feedback information on the unlicensed spectrum.
  • the embodiment of the present application aims at the technical problems to be solved above, and proposes the following two possible application scenarios.
  • a terminal device performs SL communication on an unlicensed spectrum
  • multiple TBs are arranged together, and a LBT pair-to-many TB for transmission, that is, multiple sideline information is transmitted within the COT.
  • a LBT pair-to-many TB for transmission that is, multiple sideline information is transmitted within the COT.
  • the terminal device can continuously transmit multiple TBs at the overlapping positions of the selection windows, and the time between multiple TB transmissions If the interval is smaller than the threshold (for example, 16us), the terminal device can continuously send the multiple TBs only through one LBT.
  • the threshold for example, 16us
  • the terminal device can continuously send the multiple TBs only through one LBT.
  • the terminal device triggers resource selection for TB1 transmission, the position of the resource selection window corresponds to the time slot [n+T1, n+T2], and in time slot n' the terminal device triggers
  • the position of the resource selection window is between time slots [n'+T1, n'+T2].
  • the terminal device When the terminal device triggers resource selection for TB1 transmission in time slot n, the terminal device can wait for a period of time until it determines that resource selection for TB2 transmission is required in time slot n'. In this case, the terminal device can select Between [n'+T1, n+T2], TB1 and TB2 are sent out continuously.
  • the period of time that the terminal device needs to "wait” should be less than the packet delay budget (Packet Delay Budget, PDB) of TB1.
  • PDB Packet Delay Budget
  • the time slot [m-n] in the figure should be less than or equal to L, and L is an integer of the PDB greater than 0 and less than TB1.
  • Scenario 2 When the terminal device is sending TB1, due to LBT failure and channel access failure, it cannot send TB1 (marked by a dotted line), but when sending TB2, the channel access is successful, then the terminal device can pass TB2 to the unsent TB1 One LBT, sent out continuously. See Figure 3b.
  • TB1 that has not been sent before has a longer delay, that is, the remaining PDBs of TB1 are less, so TB1 can be sent with TB2 first.
  • the terminal device can reserve a COT to indicate that it occupies a period of time to continuously send multiple TBs, so as to achieve the purpose of sending multiple sidelink information through one LBT.
  • the sidelink information transmitted between terminal devices may be at least one of sidelink data information (such as the above-mentioned TB), sidelink control information, and sidelink feedback information.
  • sidelink data information such as the above-mentioned TB
  • sidelink control information may be carried by, for example, the PSSCH and/or PSCCH
  • sidelink feedback information may be carried by, for example, the PSFCH.
  • sidelink information can be sent and/or received within the channel occupation time.
  • the PSSCH, PSCCH, and PSFCH involved in the embodiments of the present application may be understood as physical resources, and may also be understood as data, control information, signaling, etc. transmitted through these resources.
  • a terminal device sends data or data and secondary SCI through PSSCH, which can also be described as terminal device sending PSSCH; terminal device sends control information through PSCCH, such as primary SCI, which can also be described as terminal device sending PSCCH; terminal device sends through PSFCH Feedback messages, such as HARQ messages, can also be expressed as PSFCH sent by the terminal equipment.
  • HARQ messages can also be expressed as PSFCH sent by the terminal equipment.
  • the first terminal device, the second terminal device and the third terminal device may be, for example, terminal devices in the communication system shown in FIG. 1 .
  • the first terminal device may be the terminal device 121 in FIG. 1
  • the second terminal device may be the terminal device 122 in FIG. 1
  • the third terminal device may be the terminal device 123 in FIG. 1 .
  • the first terminal device shown in the following embodiments may also be replaced with components in the first terminal device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • the second terminal device may also be replaced with components in the second terminal device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • the third terminal device may also be replaced with components in the third terminal device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.
  • the second terminal device may be the receiving end device of the first terminal device, and the number of the second terminal device is one or more.
  • the number of the second terminal device is multiple, it can be understood as the first terminal device Send sidelink data information and/or sidelink control information to multiple different second terminal devices, and the second terminal device may send sidelink feedback information to the first terminal device for the received sidelink data information;
  • the third terminal device It can be the sending end device of the first terminal device, and the number of the third terminal device is one or more.
  • the third terminal device When the number of the third terminal device is multiple, it can be understood that multiple different third terminal devices send The device sends sidelink data information and/or sidelink control information, and the first terminal device may send sidelink feedback information to the third terminal device for the sidelink data information sent by the third terminal device.
  • the second terminal device and the third terminal device may be the same terminal device, for example, the second terminal device may also send sidelink data information and/or sidelink control information to the first terminal device, and the first terminal device may send After receiving the sidelink data information of the second terminal device, sending sidelink feedback information to the second terminal device.
  • the second terminal device and the third terminal device are different terminal devices, and the sidelink information sent by the first terminal device to the second terminal device may include sidelink feedback information that needs to be fed back to the third terminal device.
  • the first terminal device may send M pieces of side information and receive N pieces of side information within the COT, where M and N are integers greater than or equal to 0 and M and N are not 0 at the same time.
  • M pieces of sideline information may be sent by the first terminal device to the same receiving end device (such as the second terminal device), or the M pieces of sideline information may be sent by the first terminal device to different receiving end devices ( For example, a plurality of different second terminal devices); similarly, the N pieces of sideline information may be sent by the same sending end equipment (such as the second terminal equipment) received by the first terminal equipment, or the N pieces of sideline information may be the first
  • the terminal device receives information sent by different sender devices (for example, multiple different second terminal devices).
  • the COT may include L time domain units, where L is an integer greater than 1.
  • the first terminal device may send or receive one piece of sidelink information in one time domain unit among the L time domain units.
  • the time domain unit may be, for example, one or more symbols, one or more time slots, one or more subframes, etc. It should be understood that the time domain unit is not necessarily the smallest time unit, and the embodiment of the present application takes the time domain unit as Time slots are used as an example for description.
  • the L time domain units may be continuous, that is, there is no time domain interval between adjacent time domain units, or the time domain interval between adjacent time domain units is less than or equal to a threshold (for example, 16us).
  • the threshold may be defined by the protocol or configured by the network device or preset in the terminal device.
  • time domain length of the COT is the sum of the time domain lengths of the L time domain units and the time domain intervals between the L time domain units.
  • the time-domain length of the COT can be represented by the number L of time-domain units.
  • the first terminal device may transmit sidelink control information (sidelink control information, SCI) in any sidelink information, such as primary SCI and/or secondary SCI, to other terminal devices (such as the second terminal equipment) indicates the time domain length of the COT.
  • sidelink control information sidelink control information, SCI
  • SCI sidelink control information
  • FIG. 4 is a schematic diagram of an interaction process of a communication method 200 provided in an embodiment of the present application. As shown in FIG. 4, the method 200 may include at least part of the content in S210 and S220. Each step in the method 200 will be described in detail below.
  • the first terminal device sends side information to the second terminal device within the COT;
  • the first terminal device receives sidelink information sent by the second terminal device within the COT.
  • the first terminal device and the second terminal device execute the above S210 and S220, and the second terminal devices in the above S210 and S220 may be different terminal devices; When it is equal to 0, the first terminal device and the second terminal device do not execute S210, but execute S220; when N is equal to 0, the first terminal device and the second terminal device do not execute S220, but execute S210.
  • the side information sent by the first terminal device to the second terminal device within the COT may be at least one of the aforementioned M pieces of side information; in the above S220, the first terminal device receives the second The side information sent by the terminal device may be at least one piece of side information in the foregoing N pieces of side information.
  • the side information sent by the second terminal device in the COT may be the side information sent by the second terminal device to the side information sent by the first terminal device in S210; in S220, the second terminal The sidelink information sent by the device in the COT may be a retransmission of the sidelink feedback information sent by the second terminal device to the first terminal device in S210.
  • the side link information sent by the second terminal device in the COT in S220 may be side link data information and/or side link control information; the side link information sent by the second terminal device in the COT in S220 The information may be a retransmission of sidelink data information and/or sidelink control information.
  • the M pieces of sidelink information and the N pieces of sidelink information include at least one piece of first sidelink information, and the first sidelink information includes sidelink feedback information.
  • the resource carrying the sidelink feedback information is the feedback resource.
  • the resources for the first terminal device to send the sidelink feedback information are called first feedback resources, and the resources for the first terminal device to receive the sidelink feedback information are called second feedback resources.
  • the above-mentioned feedback resources may be configured by the network device, or pre-configured, for example, preset in the first terminal device, the second terminal device and the third terminal In the device, or may be indicated by the side line control information in any side line information of the M side line information and the N side line information.
  • any one of the M pieces of side information and the N pieces of side information may include side control information and/or side data information. Both the sidelink control information and the sidelink data information may be initially transmitted or retransmitted.
  • the embodiment of the present application provides the following exemplary description for the time domain position of the feedback resource (including the first feedback resource and/or the second feedback resource):
  • the first feedback resource used to carry sidelink feedback information sent by the first terminal device to other terminal devices (eg, the second terminal device).
  • the first feedback resource may include at least one of the following time domain units:
  • the first time domain unit within the COT is the first time domain unit within the COT
  • the time domain unit m in the COT the value of m is determined according to the minimum time interval N gap of the lateral feedback and the initial time domain unit of the COT;
  • the time domain unit k in the COT the value of k is determined according to the minimum time interval N gap of the sidelink feedback and the receiving position of the COT of the sidelink data information to which the sidelink feedback information responds.
  • the first feedback resource includes the first time domain unit in the COT, that is, the first terminal device feeds back the received sidelink data information in the first time domain unit of the COT, so that the maximum The time domain interval between the sidelink feedback information and the sidelink data information to be fed back is reduced, and the transmission delay of the feedback information is reduced.
  • the time domain interval between the sidelink data information received by the first terminal device and the COT sent by other terminal equipment is relatively close, for example, the time domain position of the sidelink data information is separated from the time domain position of the initial time domain unit of the COT When it is less than the minimum time interval N gap , or when the time domain interval between the end time of the last time domain unit of the sidelink data PSSCH and the start time of the COT start time domain unit is less than the minimum time interval N gap , in order to ensure that the first terminal
  • the device has enough processing time to generate and send sidelink feedback information, and can determine the first feedback resource according to the minimum time interval N gap and the initial time domain unit of the COT, that is, the time domain unit m of the first feedback resource and the minimum time
  • the interval N gap is related to the starting time domain unit of the COT.
  • the sidelink feedback information sent by the first terminal device to the time domain unit m can ensure that all sidelink data information received before the COT is fed back while reducing the feedback delay.
  • the first feedback resource may include the second time domain unit in the COT, that is, the second time domain unit in the COT of the first terminal device transmits to the second terminal device Line feedback information to respond to the side line data information sent by the second terminal device to the first terminal device before the COT.
  • the first feedback resource may include the third time domain unit in the COT, that is, the first terminal device sends the second terminal device the third time domain unit in the COT
  • the sidelink feedback information is used to respond to the sidelink data information sent by the second terminal device to the first terminal device before the COT.
  • the first terminal device receives sidelink data information sent by other terminal devices in the COT, in order to ensure that the first terminal device has enough processing time to generate and send sidelink feedback for the sidelink data information received in the COT information, the first feedback resource can be determined at the receiving position of the COT according to the minimum time interval N gap and the sidelink data information that the sidelink feedback information responds to, that is, the time domain unit k of the first feedback resource and the minimum time interval N gap and Responsive sideline data messages are associated at the receiving location of the COT.
  • the sidelink feedback information sent by the first terminal device in the time domain unit k can realize timely feedback of the sidelink data information received in the COT.
  • the first terminal device receives the side data information sent by the second terminal device in the first time domain unit of the COT, or receives the side data information sent by the second terminal device.
  • the first feedback resource may include the third time domain unit in the COT, that is, the third time domain unit in the COT of the first terminal device sends the sidelink feedback information to the second terminal device.
  • the first feedback resource may include a combination of any two or three items of the first time-domain unit in the COT, the time-domain unit m in the COT, and the time-domain unit k in the COT.
  • the first time domain unit may be configured as a fixed sending opportunity of sidelink feedback information
  • time domain unit m and/or time domain unit k may be configured as additional sending opportunities of sidelink feedback information.
  • the opportunity to send additional sidelink feedback information can be configured by the base station to the first terminal device or configured on the resource pool through high-level signaling, such as RRC signaling, MAC CE, etc.; it can also be configured by other terminal devices (such as the second terminal device) , through high layer parameters of the first terminal device and other terminals, such as PC-5RRC, or dynamic signaling configuration or indication. Realize timely and effective feedback on different lateral data information.
  • the time domain unit index can be the COT time domain unit index; it can also be the time domain unit index of the resource pool used for sideline transmission, which is a logical time domain unit index; it can also be configured on the system frame
  • the time domain unit index of is the physical time domain unit index.
  • the time domain unit index in the COT corresponds to both a logical time domain unit index and a physical time domain unit index.
  • the second feedback resource used to carry the sidelink feedback information received by the first terminal device from other terminal devices (for example, the second terminal device).
  • the second feedback resource may include at least one of the following time domain units:
  • the time domain unit n in the COT the value of n is determined according to the period N PSFCH of the sidelink feedback and the initial time domain unit of the COT.
  • the second feedback resource includes the last time domain unit in the COT, that is, the first terminal device receives the sidelink feedback information sent by other terminal devices (such as the second terminal device) in the last time domain unit of the COT. To maximize the acquisition of feedback from other terminal devices on the sidelink data information sent in the COT, and reduce the receiving delay of the sidelink feedback information.
  • the first terminal device needs to perform scheduled retransmission for the sidelink feedback information sent by other terminal devices (such as the second terminal device).
  • the second feedback resource can be determined according to the starting time domain unit of the period N PSFCH and COT of the sidelink feedback, that is, the time domain unit n of the second feedback resource and the starting time domain unit of the period N PSFCH and COT of the sidelink feedback relevant.
  • the first terminal device receives the sidelink feedback information in the time domain unit n, which reduces the time delay between the sidelink feedback information and retransmission.
  • the time domain unit n may be an integer multiple of the period N PSFCH of the sidelink feedback.
  • the time domain unit n N PSFCH N.
  • an adjustment parameter ⁇ can be configured, ⁇ is greater than 1, and the time-domain unit
  • the last time domain unit of the COT may be configured as a fixed receiver of sidelink feedback information
  • time domain unit n may be configured as an additional receiver of sidelink feedback information.
  • the opportunity to send additional sidelink feedback information can be configured by the base station to the first terminal device or configured on the resource pool through high-level signaling, such as RRC signaling, MAC CE, etc.; it can also be configured by other terminal devices (such as the second terminal device) , through high layer parameters of the first terminal device and other terminals, such as PC-5RRC, or dynamic signaling configuration or indication.
  • the time domain unit index can be the COT time domain unit index; it can also be the time domain unit index of the resource pool used for sideline transmission, which is a logical time domain unit index; it can also be configured on the system frame
  • the time domain unit index of is the physical time domain unit index.
  • the time domain unit index in the COT corresponds to both a logical time domain unit index and a physical time domain unit index.
  • the time domain position of any of the above feedback resources is related to the time domain length of the COT. That is, the time-domain unit m, k, and n should be in the COT, and if the time-domain unit m, k, or n is not in the COT, then the time-domain unit m, k, or n does not belong to the feedback resource.
  • feedback and “response” are used interchangeably, and they express the same meaning, that is, feedback to side data information can also be described as responding to side data information.
  • Fig. 5 is a kind of exemplary COT structure, as shown in Fig. 5, COT includes 6 time-domain units, and each time-domain unit can be a time slot, for example, carries a side information in each time slot, every Each sideline information includes sideline data information and sideline control information, or each time slot includes sideline data resources (such as PSSCH) and sideline control resources (such as PSCCH), and each sideline information can be sent to different
  • the sideline information in the first time slot is sent to all terminal devices in multicast group 1, and the sideline information in the second, fourth, and sixth time slots is sent to UE3.
  • the sidelink information in the third time slot is sent to UE4, and the sidelink information in the fifth time slot is sent to UE2.
  • the first time slot further includes a first feedback resource (for example, PSFCH)
  • the fourth time slot further includes a second feedback resource
  • the sixth time slot further includes a second feedback resource.
  • the row data information is the first transmitted TB (such as TB1-TB5 respectively), and the side row data information transmitted by the sixth time domain unit is the retransmitted TB (such as the retransmitted TB2).
  • the feedback resource PSFCH may be located in the penultimate symbol and the penultimate symbol in the time domain unit. It can also be the second-to-last or last symbol.
  • the time domain unit where the sidelink information sent by the first terminal device may include the first feedback resource, or may include the second feedback resource, that is, the first terminal device may The sidelink feedback information is received or sent in the domain unit; the time domain unit where the sidelink information received by the first terminal device may include the first feedback resource, or may include the second feedback resource, that is, the first terminal device may be in the The sidelink feedback information is received or sent in the time domain unit for receiving sidelink information.
  • the first terminal device may transmit sidelink feedback information at each resource position of the above-mentioned first feedback resource and the second feedback resource, or the first terminal device may select at least one of the above-mentioned first feedback resource and the second feedback resource Transmit sideline feedback information on the feedback resource.
  • the difference is that the first terminal device transmits sidelink feedback information at each resource position of the first feedback resource and the second feedback resource, and can completely rely on the feedback resources configured by the semi-persistent scheduling for transmission, without the need for the terminal device to determine again
  • the feedback resource saves the overhead of the terminal device and improves the processing efficiency; while the first terminal device chooses to transmit sidelink feedback information on at least one of the first feedback resource and the second feedback resource, and transmits sidelink feedback information when no transmission is required.
  • the feedback resources can be used to transmit other information, which realizes the flexible use of transmission resources.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the fourth information in the sideline control information is used to determine to carry the sideline information The location of the resources in the COT.
  • the fourth information includes at least one of:
  • the time domain length of the COT includes the number L of time domain units of the COT;
  • the remaining time domain length of the COT includes the number of remaining time domain units of the COT;
  • the first terminal device indicates the time domain unit index in the COT and/or the time domain length of the COT to other terminal devices (eg, the second terminal device).
  • the length of COT is 6 time slots
  • the index of the current time domain unit is indicated as 1 in the first time domain unit
  • the length of COT is 6
  • the index of the current time domain unit is indicated in the second time domain unit is 2
  • the length of COT is 6, and so on.
  • the second terminal device can determine whether the feedback resource is included in the current time domain unit.
  • the first terminal device may indicate the time domain unit index in the COT and/or the time domain length of the COT through the side link control information in the side link information.
  • the fourth information may also indicate the number of remaining time-domain units, and the remaining units may or may not include the current time-domain unit.
  • the second terminal device may determine the position within the COT of the time domain unit where the next second feedback resource is located according to the remaining number of time domain units and the offset value.
  • the fourth information in the first time slot indicates that the number of remaining time domain units is 6.
  • the fourth information in the second time slot indicates that the number of remaining time domain units is 6.
  • the number is 5.
  • the contents indicated by the fourth information in other time slots can be deduced in the same way, and will not be repeated here.
  • the transmission index of the side information is used to indicate the position of the currently transmitted side information in the COT.
  • 6 side information can be transmitted in the COT, and the transmission indexes of the 6 side information are 1 to 6 in sequence.
  • a time domain unit is used to transmit a side line information
  • the transmission index of the side line information in the first time domain unit is 1
  • the transmission index of the side line information in the second time domain unit is The index is 2, and so on.
  • the transmission index of the lateral information may be any regular value, and may start with any value, for example, may also be 0-5.
  • the first terminal device and/or the second terminal device may determine the length of the COT based on the number of PSSCH transmissions.
  • the first terminal device may carry sidelink feedback information indication information in the sidelink control information, which is used to indicate whether the PSSCH in the current sidelink information contains sidelink feedback information, or indicate whether the PSSCH includes sidelink feedback information. and/or reception of sidelink feedback information, at this time, the fourth information includes a transmission index of the sidelink information. For example, when the transmission index of the sideline information is 1, the indication information of the sideline feedback information indicates that the sideline information includes the sideline feedback information (for example, the indication information is set to "1") or the sideline information includes the sideline feedback information.
  • the indication information of the side line feedback information indicates that the side line information does not include the side line feedback information (such as setting the indication information to "0"); the side line information
  • the sidelink feedback information indication information indicates that the sidelink information includes sidelink feedback information (for example, the indication information is set to "1") or the sidelink information includes sidelink feedback transmission.
  • the first terminal device and the second terminal device can determine the COT length and/or give feedback instructions at the granularity of PSSCH, and transmit sideline feedback information by multiplexing PSSCH, avoiding the difference in the resource size of PSSCH and PSFCH in the frequency domain , leading to the problem of requiring additional power switching time.
  • the first terminal device needs to indicate feedback resources (including the above-mentioned first feedback resource and/or second feedback resource) to other terminal devices (such as the second terminal device), so that the second terminal device can
  • the sidelink feedback information sent by the first terminal device is received on the feedback resource, and/or the sidelink feedback information is sent to the first terminal device on the second feedback resource.
  • the first terminal device can indicate the feedback resources in the COT through the sidelink control information in the sideline information, such as the above-mentioned primary SCI and/or secondary SCI, and the sideline information can be M pieces of sideline information and N Any lateral information in the lateral information.
  • each sidelink information transmitted in the COT includes sidelink control information or each sidelink information is associated with sidelink control information.
  • the sidelink control information in one piece of sidelink information includes first information, and the first information is used to indicate whether the time domain unit where the sidelink information is located includes feedback resources, or whether the sidelink information or the sidelink information associated with the threshold Whether to include side travel feedback information in the row information.
  • the first information may indicate only when the time domain unit includes feedback resources, or the first information may indicate when the time domain unit does not include feedback resources, or the first information may indicate when the time domain unit includes or does not include feedback resources.
  • Resource time indications It can be understood that when the first information indicates that the time domain unit where the sidelink information is located includes feedback resources or the sidelink information includes feedback information, the sidelink information is the first sidelink information.
  • the first feedback resource is the first time domain unit and the third time domain unit in the COT
  • the first terminal device can choose to send sidelink feedback information in the first time domain unit, and send sidelink feedback information in the third time domain unit.
  • Send side travel feedback information The first terminal device may instruct the first time-domain unit to send side-link feedback information in the side-link control information sent by the first time-domain unit, and the first terminal device may also transmit the side-link feedback information before the third time-domain unit or the third time-domain unit
  • the time domain unit (for example, the first time domain unit and/or the second time domain unit) instructs the third time domain unit not to send sidelink feedback information.
  • the feedback resource may be indicated through sidelink control information sent by the first terminal device to the second terminal device.
  • the side traffic information in the COT includes or is associated with side traffic control information.
  • the side row control information in the side row information includes second information, and the second information may indicate at least one of the following:
  • the time domain unit where the lateral information is located does not include feedback resources
  • the time domain unit where the lateral information is located includes feedback resources
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a first feedback resource for sending sidelink feedback information, and the sidelink information is the first sidelink information;
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving sidelink feedback information, and the sidelink information is the first sidelink information.
  • the sideline control information may be, for example, the above-mentioned SCI (including primary SCI and/or secondary SCI).
  • the second information may be, for example, a PSFCH function indication field carried in the SCI.
  • the second information may indicate at least one of the following:
  • the lateral information or associated lateral information does not include lateral feedback information
  • the sidewalk information or associated sidewalk information includes sidewalk feedback information
  • the sidelink information or associated sidelink information includes sidelink feedback information, and the sidelink feedback information is sent by the first terminal device;
  • the sidelink information or associated sidelink information includes sidelink feedback information, and the sidelink feedback information is received by the first terminal device.
  • the second information can be indicated by 2 bits, as shown in Table 2 and Table 3 below:
  • bit field value second message 00 no feedback resources 01 There is a feedback resource and the feedback resource is used to send
  • the second information can be indicated by, for example, 1 bit, as shown in Table 4 and Table 5 below
  • bit field value second message 0 no feedback resources 1 There are feedback resources
  • bit field value second message 0 no feedback 1 have feedback
  • the foregoing feedback resources may be PSFCH, for example.
  • the feedback resource may be indicated through sidelink control information sent by the first terminal device to the second terminal device.
  • any of the M pieces of sideline information and the N pieces of sideline information includes or is associated with sideline control information.
  • the sidelink control information in the sidelink information includes third information, and the third information is used to indicate the location of the next second feedback resource for receiving the sidelink feedback information.
  • the second terminal device can determine the location of the next second feedback resource in advance by receiving the third information, so as to ensure that the second terminal device can normally send sideline feedback information on the second feedback resource, thereby improving transmission reliability .
  • the side traffic control information including the third information may further include the first information and/or the second information; or the third information may also be combined with the aforementioned semi-persistent scheduling manner.
  • the third information may be included in the first-level SCI or the second-level SCI.
  • the above third information indicates the position of the next second feedback resource. Specifically, the third information indicates the offset value of the next second feedback resource for receiving sidelink feedback information relative to the time domain unit carrying the sidelink information. accomplish.
  • the above offset value of the second feedback resource for receiving the sidelink feedback information relative to the time domain unit carrying the sidelink information may be indicated by binary bits.
  • the number of bits indicating the offset value may be determined according to the maximum COT time domain length of the SL bandwidth part (band width part, BWP) and the SCS configured on the SL BWP, for example.
  • BWP bandwidth part
  • the number of bits indicating the offset value Wherein, L mcot is the maximum COT time domain length of the SL BWP, u is used to represent the SCS, and u has a corresponding relationship with the SCS, and the corresponding relationship between u and the SRS is shown in Table 6 below, for example.
  • the first information can be used in the next When the offset value of the second feedback resource of the information is less than or equal to the minimum time interval of the feedback constraint, it includes the offset value indicating the next second feedback resource, and the next second feedback resource used to receive the sidelink feedback information When the offset value of the resource is greater than the minimum time interval of the feedback constraint, it includes indicating the range of the offset value of the next second feedback resource.
  • the processing time of the second terminal device (for example, the time required for generating and/or sending the sidelink feedback information) is relatively short. Insufficient, the first terminal device needs to indicate to the second terminal device so that the second terminal device can process or reselect resources in time; and when the offset value of the next second feedback resource is greater than the minimum time interval of the feedback constraint, the second The processing time of the terminal device is sufficient, and the first terminal device may not indicate a specific offset value temporarily, but only needs to indicate to the second terminal device that the offset value is greater than the minimum time interval of the feedback constraint.
  • the minimum time interval of the feedback constraint is an example of the comparison threshold and does not constitute any limitation to the present application. In this embodiment of the present application, any comparison threshold may also be set in an actual application scenario.
  • the third information indicates the specific offset value.
  • the third information indicates the offset value. range (greater than 2).
  • the second information may indicate that the time domain unit where the sidelink information is located does not include feedback resources (such as "00" in Table 2), or the second information indicates that the sidelink information If the time domain unit where the row information is located includes a feedback resource and the feedback resource includes the first feedback resource (such as "01" in Table 2) for sending side row feedback information, then the second terminal device can determine the first feedback resource according to the second information. a feedback resource, and determine a second feedback resource according to the third information.
  • the second information does not need to indicate that the time domain unit where the sidelink information is located includes a feedback resource and the feedback resource includes a second feedback resource (such as "10" in Table 2) for receiving sidelink feedback information, Avoid duplication with the content indicated by the third information in the previous sidelink control information; or the second information indicates that the time domain unit where the sidelink information is located includes a feedback resource and the feedback resource includes the second feedback for receiving sidelink feedback information resources (such as "10" in Table 2), the second information is invalid, in other words, the time domain unit where the sidelink information is located includes feedback resources and the feedback resources include the second feedback resources for receiving sidelink feedback information When , the second terminal device takes the position of the second feedback resource indicated by the third information as the criterion.
  • a second feedback resource such as "10" in Table 2
  • the fourth information in the lateral control information may indicate the number of remaining time-domain units, and the remaining units may or may not include the current time-domain unit.
  • the second terminal device may determine the position within the COT of the time domain unit where the next second feedback resource is located according to the remaining number of time domain units and the offset value.
  • the primary SCI in the sideline control information may include information indicating the number of remaining time domain units and the above-mentioned second information
  • the secondary SCI in the sideline control information may include information indicating the target terminal device (such as the second terminal The information of the identification ID of the device) and the above-mentioned third information.
  • the primary SCI in the first time slot indicates that the number of remaining time domain units is 6, and the second information is "01" (indicating that the current time slot includes the first feedback resource ), the secondary SCI in the first time slot indicates that the target terminal device is a multicast group, and the third information is "10" (combined with Table 8, indicating the time domain between the next second feedback resource and the current time slot interval is 2 time slots), similarly, the first-level SCI in the second time slot indicates that the number of remaining time-domain units is 5, and the second information is "00" (indicating that the current time slot does not include feedback resources), the first The secondary SCI in a time slot indicates that the target terminal equipment is UE3, and the third information is "01” (combined with Table 8, indicating that the time domain interval between the next second feedback resource and the current time slot is 1 hour gap).
  • the contents indicated by the lateral control information in other time slots can be deduced by analogy, and will not be repeated here.
  • the first terminal device feeds back the received sidelink information (such as PSSCH), which may include the following two possible implementations:
  • the first terminal device only sends the side link feedback information to the sender of the side link information that needs to be fed back.
  • the second terminal device (UE1) sends sidelink data information TB1 to the first terminal device (UE2)
  • the first terminal device (UE2) sends sidelink data information to the second terminal device (UE1).
  • the first terminal device (UE2) can continuously send PSSCH (carrying TB2) and PSFCH (carrying the HARQ feedback of TB1) or PSSCH to the second terminal device (UE1)
  • the distance from PSFCH is smaller than the threshold (such as 16us).
  • the first terminal device sends the side track feedback information to any terminal device, that is, the terminal device may not be the sender of the side track information fed back by the side track feedback information.
  • the sidelink feedback information sent by the first terminal device in the COT may include feedback indication information, and the feedback indication information is used for the receiver of the sidelink feedback information (that is, the sidelink feedback information fed back
  • the sender of the sidelink data information hereinafter also referred to as the third terminal device
  • the first terminal device can send sidelink feedback information alone, and when there is sidelink data information and/or sidelink control information that needs to be sent When sending information, the sidelink feedback information and the sidelink data information and/or the sidelink control information may be continuously sent. If multiple pieces of sidelink feedback information are carried in the same feedback resource, the target terminal devices of the multiple pieces of sidelink feedback information may be the same or different.
  • Feedback indications may include at least the following three possible examples:
  • the feedback indication information may include one of the following:
  • the information of the ID of the third terminal device is used to indicate the target terminal device for feedback, and the information of the HARQ process ID is used to indicate which HARQ process is targeted for feedback.
  • the third terminal device and the second terminal device are the same terminal device, that is, the target terminal device of the lateral information is the same as the target terminal device of the lateral feedback information, and the lateral control information can only indicate The ID of a target end device.
  • the feedback indication information may be used to indicate a resource location of the fed back sidelink data information, and the resource location includes a time domain location and/or a frequency domain location.
  • the feedback indication information may include one of the following:
  • the frequency domain information of the sidelink data information may be a frequency domain interval, such as the distance between the sidelink data information and the edge of the resource pool, and the frequency domain information of the sidelink data information may include, for example, the The physical resource block (physical resource block, PRB) index of the side data or the difference between the PRB of the side data and the PRB at the edge of the resource pool.
  • the physical resource block physical resource block, PRB
  • the feedback indication information in Example 2 may only indicate the difference between the sidelink data information and the sidelink feedback information.
  • the interval information of the time-domain unit indicates the offset value of the time-domain unit of the sidelink data information relative to the sidelink feedback information, etc.
  • the feedback indication information includes at least one time-frequency position index of sidelink information. It should be noted that, in the third example above, the feedback indication information is feedback on at least one sidelink information received in the first time-frequency range, and the at least one sidelink information is received by the first terminal device from at least one third Sideline information of the terminal device.
  • the time domain range of the first time-frequency range may be from time slot i+1 to time slot i+3, where i is a positive integer, and all sub-bands that may be used for sidelink data transmission within the time domain range are
  • the channel (sub channel) is sorted in the frequency domain first and then the time domain to obtain the index of the time-frequency position (1 ⁇ 12), and the first terminal device feeds back the sub-channel with the sub-channel as the starting sub-channel according to the index of the time-frequency position
  • the lateral feedback information of the lateral data information When only feeding back the sidelink data information in the COT, the first terminal device may only feed back sidelink feedback information corresponding to the first time-frequency range, that is, slot i+1 to slot i+3.
  • both the first time-frequency range and the index of the time-frequency position of the at least one sidelink information may be configured in a semi-static configuration manner.
  • the first time-frequency range can be configured by the base station to the first terminal device or configured on the resource pool through high-level signaling, such as RRC signaling and MAC CE; it can also be configured by other terminal devices (such as the second terminal device) through the first High layer parameters of terminal equipment and other terminals, such as PC-5RRC, or dynamic signaling configuration or indication.
  • the first terminal device may generate a HARQ codebook according to the feedback indication information and sidelink feedback information (for example, HARQ information) in the foregoing example 1, example 2, or example 3.
  • example 1 and example 3 are all applicable to the above manner 1 and manner 2, and are especially applicable to the manner 2.
  • example 2 or example 3 is applied to the above manner 1, the third terminal device and the second terminal device are the same terminal device.
  • the above method 2 uses Example 1, Example 2 or Example 3, so that the first terminal device can send sidelink feedback information to any terminal device, so that the sidelink feedback information can be transmitted to a different destination than the sidelink data information and/or sidelink control information.
  • the target terminal equipment realizes flexible scheduling of feedback resources and reduces the delay of sideline feedback information.
  • the first terminal device transmits side information between other terminal devices within the COT, avoiding the problem that the transmitted side information needs to be re-evaluated due to the time domain interval being greater than the threshold, and reduces The frequency of idle channel assessment is reduced, and at the same time, the problem that data cannot be sent due to the failure of idle channel assessment is avoided, and the reliability of transmission is improved.
  • the transmission delay of the feedback information is reduced by receiving or sending the feedback information in the COT.
  • Fig. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the apparatus 300 may include: a transceiver unit 310 and a processing unit 320 .
  • the communication device 300 may correspond to the first terminal device in the above method embodiments, for example, it may be the first terminal device, or a component configured in the first terminal device (such as a chip or a chip system, etc. ).
  • the communication device 300 may correspond to the first terminal device in the method 200 shown in the method embodiments of the present application, and the communication device 300 may include a method for executing the method performed by the first terminal device in the above method embodiments unit.
  • each unit in the communication device 300 and the above-mentioned other operations and/or functions are respectively intended to implement a corresponding flow of the method 200 in FIG. 3 .
  • the processing unit 320 can be used to determine M pieces of side information and N pieces of side information, where M and N are integers greater than or equal to 0 and M and N Not equal to 0 at the same time; the transceiver unit 310 can be used to send M pieces of sideline information and receive N pieces of sideline information in the COT, the COT includes L time domain units, and L is an integer greater than 1.
  • the M pieces of sidelink information and the N pieces of sidelink information include at least one piece of first sidelink information, the first sidelink information includes sidelink feedback information, and a feedback resource carrying the sidelink feedback information It is configured for the network device or indicated or pre-configured by the sidelink control information in any sidelink information.
  • the time domain position of the feedback resource is related to the time domain length of the COT.
  • the feedback resource includes a first feedback resource for sending sidelink feedback information, and the first feedback resource is included in at least one of the following time domain units:
  • the first time domain unit within the COT is the first time domain unit within the COT
  • the time domain unit m in the COT the value of the m is determined according to the minimum time interval N gap of the lateral feedback and the initial time domain unit of the COT;
  • the value of k is determined according to the minimum time interval N gap of the sidelink feedback and the receiving position of the sidelink data information to which the sidelink feedback information responds in the COT.
  • the n PSSCH is the index of the time domain unit receiving the sidelink data information in the COT.
  • the feedback resource includes a second feedback resource for receiving sidelink feedback information; the second feedback resource is included in at least one of the following time domain units:
  • the value of n is determined according to the period N PSFCH of the sidelink feedback and the initial time domain unit of the COT.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the first information in the sideline control information is used to indicate where the sideline information is located.
  • the time domain unit of the side link information includes feedback resources or whether the side link information includes side link feedback information; when the first information indicates that the time domain unit where the side link information is located includes feedback resources or the side link information includes feedback information, the The side line information is the first side line information.
  • any one of the M pieces of side information and the N pieces of side information includes side control information, and the second information in the side control information is used to indicate one of the following:
  • the time domain unit where the lateral information is located does not include feedback resources
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a first feedback resource for sending sidelink feedback information, and the sidelink information is the first sidelink information;
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving sidelink feedback information, and the sidelink information is the first sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the third information in the sideline control information is used to indicate the next The location of the second feedback resource of the lateral feedback information.
  • the third information includes an offset value indicating the next second feedback resource for receiving the sidelink feedback information relative to the time domain unit carrying the sidelink information.
  • the offset value of the next second feedback resource for receiving the lateral feedback information is less than or equal to the minimum time interval of the feedback constraint
  • the third information includes indicating the next resource for receiving the lateral feedback information
  • the offset value of the second feedback resource of the feedback information; or, the offset value of the next second feedback resource used to receive the sidelink feedback information is greater than the minimum time interval of the feedback constraint, and the third information includes indicating the next The range of the offset value of the second feedback resource used to receive the sidelink feedback information.
  • the sidelink feedback information is feedback from the second terminal device to the second sidelink information sent by the first terminal device.
  • the side track feedback information in the side track information includes feedback indication information
  • the feedback indication information includes at least one of the following:
  • the sidelink feedback information in the sidelink information includes feedback indication information, and the feedback indication information is used to indicate a resource location of the fed back sidelink data information.
  • the feedback indication information includes at least one of the following:
  • the frequency domain information of the sidelink data information includes a resource block PRB index of the sidelink data or a difference between a PRB of the sidelink data and a PRB at an edge of a resource pool.
  • the sidelink feedback information in the sidelink information is feedback to at least one sidelink information received in the first time-frequency range, and the at least one sidelink information is received by the first terminal device from at least one Sideline information of a third terminal device.
  • the sidelink feedback information includes feedback indication information
  • the feedback indication information includes an index of a time-frequency position of the at least one piece of sidelink information.
  • any one of the M pieces of sideline information and the N pieces of sideline information includes sideline control information, and the fourth information in the sideline control information is used to determine to carry the sideline information The location of the resources in this COT.
  • the fourth information includes at least one of the following:
  • the time domain length of the COT includes the number L of time domain units of the COT;
  • the remaining time domain length of the COT includes the number of remaining time domain units of the COT;
  • the communication device 300 may correspond to the second terminal device in the above method embodiments, for example, it may be the second terminal device, or a component configured in the second terminal device (such as a chip or a chip system, etc. ).
  • the communication apparatus 300 may correspond to the second terminal device in the method embodiment according to the present application, and the communication apparatus 300 may include a unit for performing the method performed by the second terminal device in the above method embodiment.
  • each unit in the communication device 300 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding procedures of the above-mentioned method embodiments.
  • the transceiver unit 310 can be used to receive the sidelink information sent by the first terminal device in the COT, the COT includes L time domain units, and L is greater than 1 is an integer; the processing unit 320 may be configured to determine a feedback resource according to the sidelink information, and the feedback resource is used to receive or send the sidelink feedback information.
  • the sidelink information includes sidelink control information, and the sidelink control information is used to instruct the second terminal device to receive or send feedback resources for sidelink feedback information in the COT.
  • the first information in the sidelink control information is used to indicate whether the time domain unit where the sidelink information is located includes feedback resources or whether the sidelink information includes feedback information; or, the sidelink control information
  • the second information in is used to indicate one of the following:
  • the time domain unit where the lateral information is located does not include feedback resources
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a first feedback resource for sending sidelink feedback information;
  • the time domain unit where the sidelink information is located includes a feedback resource, and the feedback resource includes a second feedback resource for receiving sidelink feedback information.
  • the third information in the sidelink control information is used to indicate the location of the next second feedback resource for receiving sidelink feedback information.
  • the transceiver unit 310 is also used for:
  • the transceiver unit 310 in the communication device 300 can be implemented by a transceiver, for example, it can correspond to the communication device 400 shown in FIG. 10
  • the transceiver unit 310 in the communication device 300 may be implemented through an input/output interface, a circuit, etc.
  • the processing unit 320 in the communication device 300 may be implemented by a processor, a microprocessor, or an integrated circuit integrated on the chip or the chip system.
  • Fig. 10 is another schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 400 may include: a processor 410 , a transceiver 420 and a memory 430 .
  • the processor 410, the transceiver 420 and the memory 430 communicate with each other through an internal connection path, the memory 430 is used to store instructions, and the processor 410 is used to execute the instructions stored in the memory 430 to control the transceiver 420 to send signals and /or to receive a signal.
  • the communication apparatus 400 may correspond to the first terminal device or the second terminal device in the above method embodiments, and may be used to perform various steps and steps performed by the first terminal device or the second terminal device in the above method embodiments. /or process.
  • the memory 430 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory.
  • the memory 430 can be an independent device, or can be integrated in the processor 410 .
  • the processor 410 may be used to execute the instructions stored in the memory 430, and when the processor 410 executes the instructions stored in the memory, the processor 410 is used to execute the above-mentioned method corresponding to the first terminal device or the second terminal device Various steps and/or processes of the embodiments.
  • the communications apparatus 400 is the first terminal device in the foregoing embodiments.
  • the communications apparatus 400 is the second terminal device in the foregoing embodiments.
  • the transceiver 420 may include a transmitter and a receiver.
  • the transceiver 420 may further include antennas, and the number of antennas may be one or more.
  • the processor 410, the memory 430 and the transceiver 420 may be devices integrated on different chips.
  • the processor 410 and the memory 430 may be integrated in a baseband chip, and the transceiver 420 may be integrated in a radio frequency chip.
  • the processor 410, the memory 430 and the transceiver 420 may also be devices integrated on the same chip. This application is not limited to this.
  • the communication apparatus 400 is a component configured in the first terminal device, such as a chip, a chip system, and the like.
  • the communication apparatus 400 is a component configured in the second terminal device, such as a chip, a chip system, and the like.
  • the transceiver 420 may also be a communication interface, such as an input/output interface, a circuit, and the like.
  • the transceiver 420 , the processor 410 and the memory 430 may be integrated in the same chip, such as a baseband chip.
  • FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device can be applied to the system shown in FIG. 1 .
  • the terminal device 500 includes a processor 510 and a transceiver 520 .
  • the terminal device 500 further includes a memory 530 .
  • the processor 510, the transceiver 520 and the memory 530 can communicate with each other through an internal connection path, and transmit control and/or data signals. Call and run the computer program to control the transceiver 520 to send and receive signals.
  • the terminal device 500 may further include an antenna 540, configured to transmit the uplink data or uplink control signaling output by the transceiver 520 through wireless signals.
  • the processor 510 and the memory 530 may be combined into a processing device, and the processor 510 is configured to execute the program codes stored in the memory 530 to realize the above functions.
  • the memory 530 may also be integrated in the processor 510 , or be independent of the processor 510 .
  • the processor 510 may correspond to the processing unit 320 in FIG. 9 or the processor 410 in FIG. 10 .
  • the above-mentioned transceiver 520 may correspond to the transceiver unit 310 in FIG. 9 or the transceiver 420 in FIG. 10 .
  • the transceiver 520 may include a receiver (or called a receiver, a receiving circuit) and a transmitter (or called a transmitter, a transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 500 may also include a power supply 550, configured to provide power to various devices or circuits in the terminal device 500.
  • a power supply 550 configured to provide power to various devices or circuits in the terminal device 500.
  • the terminal device 500 may also include one or more of an input unit 560, a display unit 570, an audio circuit 580, a camera 590, and a sensor 600.
  • the audio The circuitry may also include a speaker 580a, a microphone 580b, and the like.
  • the terminal device 500 shown in FIG. 11 can implement various processes related to the second terminal device in the above method embodiments, or, various processes related to the second terminal device in the above method embodiments.
  • the operations and/or functions of the various modules in the terminal device 500 are respectively for implementing the corresponding processes in the above method embodiments.
  • the processor 510 may be used to execute the actions internally implemented by the first terminal device or the second terminal device described in the above method embodiments.
  • the present application also provides a processing device, including at least one processor, and the at least one processor is used to execute the computer program stored in the memory, so that the processing device executes the method performed by the first terminal device in the above method embodiment or a method executed by the second terminal device.
  • the embodiment of the present application also provides a processing device, including a processor and an input/output interface.
  • the input-output interface is coupled with the processor.
  • the input and output interface is used for inputting and/or outputting information.
  • the information includes at least one of instructions and data.
  • the processor is configured to execute a computer program, so that the processing device executes the method executed by the first terminal device or the method executed by the second terminal device in the above method embodiments.
  • the embodiment of the present application also provides a processing device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the processing device executes the method performed by the first terminal device or the second terminal device in the above method embodiment method of execution.
  • the above processing device may be one or more chips.
  • the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • 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, no detailed description is given here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a 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, 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, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • 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.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • 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 Erases 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
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the first step in the above method embodiments A method executed by a terminal device or a second terminal device.
  • the present application also provides a computer-readable storage medium, the computer-readable storage medium stores program codes, and when the program codes are run on a computer, the computer is made to execute the above-mentioned method embodiments The method executed by the first terminal device or the second terminal device.
  • the present application further provides a communication system, where the communication system may include the foregoing first terminal device and the second terminal device.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be components.
  • One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.
  • packets of data e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems.
  • the disclosed systems, devices and methods may 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 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 application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

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Abstract

本申请提供一种通信方法、装置、设备以及存储介质。该方法包括：第一终端设备在信道占用时间COT内发送M个侧行信息和接收N个侧行信息，该COT包括L个时域单元，M和N为大于或者等于0的整数且M和N不同时为0，L为大于1的整数。避免传输的侧行信息因时域间隔大于门限，而需要重新进行空闲信道评估的问题，减少了空闲信道评估的频率，同时避免因空闲信道评估失败导致数据无法发送的问题，提高了传输的可靠性。

Description

通信方法、装置、设备以及存储介质
本申请要求于2021年10月08日提交中国专利局、申请号为202111171665.5、申请名称为“通信方法、装置、设备以及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法、装置、设备以及存储介质。
背景技术
目前，在有些通信系统中，如第五代移动通信系统(5th generation wireless system，5G)中，终端设备与终端设备之间可以通过侧行链路(sidelink)进行信令和数据的传输。这种通过侧行链路来进行传输的方式可以称为侧行传输。
当终端设备在非授权频谱上进行侧行链路传输时，无论是传输同一传输块(transport block，TB)的初传或重传，还是传输不同的TB，如果发送间隔时间超过门限(例如16us)就需要进行空闲信道评估。并且，当终端设备在空闲信道评估失败时，该终端设备接入信道失败，则相应的TB将无法传输。
由此可见，在终端设备需要多次接入信道时，终端设备频繁检测信道是否空闲，将导致传输效率较低；终端设备接入信道失败将导致相应的数据无法传输。因此，为了支持在非授权频谱上进行侧行传输，如何降低空闲信道的检测次数，提高传输效率，以及提高传输可靠性是当前亟待解决的问题。
发明内容
本申请实施例提供的一种通信方法、装置、设备以及存储介质，能够在非授权频谱上进行侧行传输，提高传输效率以及传输可靠性。
第一方面，本申请实施例提供一种通信方法，包括：第一终端设备在信道占用时间(Channel Occupancy Time，COT)内发送M个侧行信息和接收N个侧行信息，该COT包括L个时域单元，M和N为大于或者等于0的整数且M和N不同时为0，L为大于1的整数。
通过第一方面提供的通信方法，第一终端设备在COT内与其他终端设备之间传输侧行信息，避免传输的侧行信息因时域间隔大于门限，而需要重新进行空闲信道评估的问题，减少了空闲信道评估的频率，同时避免因空闲信道评估失败导致数据无法发送的问题，提高了传输的可靠性。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中包括至少一个第一侧行信息，该第一侧行信息包括侧行反馈信息，承载该侧行反馈信息的反馈资源为网络设备配置的或者任一侧行信息中的侧行控制信息指示的或者预配置的。
通过该实施方式提供的通信方法，通过在COT内接收或发送反馈信息，降低了反馈信息的传输时延。
在一种可能的实施方式中，该反馈资源的时域位置与该COT的时域长度相关。
通过该实施方式提供的通信方法，第一终端设备和/或第二终端设备根据COT的时域长度确定反馈资源的时域位置，实现了反馈资源的灵活调度。
在一种可能的实施方式中，该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该第一反馈资源包含于以下至少一个时域单元：该COT内的第一个时域单元；该COT内的时域单元m，该m的值为根据侧行反馈的最小时间间隔N gap和该COT的起始时域单元确定的；该COT内的时域单元k，该k的值为根据侧行反馈的最小时间间隔N gap和该侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
通过该实施方式提供的通信方法，实现了对反馈资源的半静态调度。
在一种可能的实施方式中，该m满足m＝N gap+n start,COT-1，该n start,COT为该COT的起始时域单元索引。
在一种可能的实施方式中，该k满足k＝N gap+n PSSCH，该n PSSCH为在该COT内接收该侧行数据信息的时域单元索引。
在一种可能的实施方式中，该反馈资源包括用于接收侧行反馈信息的第二反馈资源；该第二反馈资源包含于以下至少一个时域单元：该COT内的最后一个时域单元；该COT内的时域单元n，该n的值为根据侧行反馈的周期N PSFCH和该COT的起始时域单元确定的。
在一种可能的实施方式中，该n满足n＝n start,COT+N PSFCH·N+C，该N为大于0的整数，该C为大于或等于0的整数，该n start,COT为该COT的起始时域单元索引。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括侧行反馈信息；该第一信息指示该侧行信息所在的时域单元包括反馈资源或者该侧行信息中包括反馈信息时，该侧行信息为第一侧行信息。
通过该实施方式提供的通信方法，第一终端设备在半静态调度的基础上结合动态指示，使第二终端设备确定当前侧行信息所在的时域单元是否包括反馈资源。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第二信息用于指示以下之一：该侧行信息所在的时域单元不包括反馈资源；该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该侧行信息为第一侧行信息；该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源，该侧行信息为第一侧行信息。
通过该实施方式提供的通信方法，实现了对反馈资源的动态调度。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
通过该实施方式提供的通信方法，第二终端设备通过接收第三信息，能够提前确定下一个第二反馈资源的位置，确保第二终端设备能够在第二反馈资源正常发送侧行反馈信息，提高了传输的可靠性。
在一种可能的实施方式中，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源相对于承载该侧行信息的时域单元的偏移值。
可以理解的是，SL BWP的最大的COT时域长度越长，指示偏移值占用的的比特数越多，为了减小信令开销，第一信息可以在下一个用于接收该侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔时，包括指示下一个第二反馈资源的偏移值，而在下一个用于接收该侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔时，包括指示下一个第二反馈资源的偏移值的范围。具体见如下可能的实施方式：
该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源的偏移值；或，该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源的偏移值的范围。
在一种可能的实施方式中，该侧行反馈信息为第二终端设备对该第一终端设备发送的第二侧行信息的反馈。
第一终端设备在没有需要发送的侧行数据信息和/或侧行控制信息时，可以单独发送侧行反馈信息，在有需要发送的侧行数据信息和/或侧行控制信息时，可以将侧行反馈信息与侧行数据信息和/或侧行控制信息连续发送。若同一反馈资源中承载多个侧行反馈信息，该多个侧行反馈信息的目标终端设备可以相同也可以不同。第一终端设备可以通过反馈指示信息对目标终端设备进行指示，例如包括以下三种可能的实施方式
第一种可能的实施方式，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息包括以下至少之一：指示第三终端设备的标识ID的信息，该第三终端设备为接收该侧行反馈信息的目标终端；指示混合自动重传请求HARQ进程ID的信息。
第二种可能的实施方式，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息用于指示所反馈的侧行数据信息的资源位置。
第三种可能的实施方式中，该反馈指示信息包括以下至少之一：指示该侧行数据信息和该侧行反馈信息之间的时域单元间隔信息；指示该侧行数据信息的频域信息。
可选的，该侧行数据信息的频域信息包括该侧行数据的资源块PRB索引或该侧行数据的PRB与资源池边缘的PRB的差值。
第四种可能的实施方式，该侧行信息中的侧行反馈信息为对第一时频范围内接收的至少一个侧行信息的反馈，该至少一个侧行信息为该第一终端设备接收的来自至少一个第三终端设备的侧行信息。
可选的，该侧行反馈信息包括反馈指示信息，该反馈指示信息包括该至少一个侧行信息的时频位置的索引。
通过该实施方式提供的通信方法，第一终端设备可以针对第一时频范围内接收的侧行信息进行反馈，而这些反馈信息的接收端可以是相同或者不同的终端设备。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第四信息用于确定承载该侧行信息的资源在该COT中的位置。
在一种可能的实施方式中，该n个侧行信息包括第三侧行信息和至少一个第四侧行信息，该第三侧行信息为当前待发送的侧行信息，该第四侧行信息为该第三侧行信息的时域位置之前预设时长内的侧行信息。
在一种可能的实施方式中，该预设时长小于或等于该第四侧行信息的包时延预算PDB。
在一种可能的实施方式中，该第四信息包括以下至少之一：该COT的时域长度，该COT的时域长度包括该COT的时域单元数量L；承载该侧行信息的时域单元在COT内的时域单元索引；该COT的剩余时域长度，该剩余时域长度包括该COT的剩余时域单元数量；该侧行信息传输的索引。
第二方面，本申请实施例提供一种通信方法，包括：第二终端设备接收第一终端设备在COT内发送的侧行信息，该COT包括L个时域单元，L为大于1的整数；该第二终端设备根据该侧行信息，确定反馈资源，该反馈资源用于接收或者发送侧行反馈信息。
在一种可能的实施方式中，该侧行信息包括侧行控制信息，该侧行控制信息用于指示该第二终端设备在该COT内接收或者发送侧行反馈信息的反馈资源。
在一种可能的实施方式中，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括反馈信息；或者，该侧行控制信息中的第二信息用于指示以下之一：该侧行信息所在的时域单元不包括反馈资源；该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源；该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源。
在一种可能的实施方式中，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
在一种可能的实施方式中，该方法还包括：该第二终端设备在该第一反馈资源接收该第一终端设备发送的侧行反馈信息；和/或，该第二终端设备在该第二反馈资源向该第一终端设备发送侧行反馈信息。
上述第二方面以及上述第二方面的各可能的实施方式所提供的通信方法，其有益效果可以参见上述第一方面以及第一方面的各可能的实施方式所带来的有益效果，在此处不再赘述。
第三方面，本申请实施例提供一种通信装置，包括：处理单元，用于确定M个侧行信息和N个侧行信息，M和N为大于或者等于0的整数且M和N不同时为0；收发单元，用于在COT内发送M个侧行信息和接收N个侧行信息，该COT包括L个时域单元，L为大于1的整数。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中包括至少一个第一侧行信息，该第一侧行信息包括侧行反馈信息，承载该侧行反馈信息的反馈资源为网络设备配置的或者任一侧行信息中的侧行控制信息指示的或者预配置的。
在一种可能的实施方式中，该反馈资源的时域位置与该COT的时域长度相关。
在一种可能的实施方式中，该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该第一反馈资源包含于以下至少一个时域单元：
该COT内的第一个时域单元；
该COT内的时域单元m，该m的值为根据侧行反馈的最小时间间隔N gap和该COT的起始时域单元确定的；
该COT内的时域单元k，该k的值为根据侧行反馈的最小时间间隔N gap和该侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
在一种可能的实施方式中，该m满足m＝N gap+n start,COT-1，该n start,COT为该COT的起始时域单元索引。
在一种可能的实施方式中，该k满足k＝N gap+n PSSCH，该n PSSCH为在该COT内接收该侧行数据信息的时域单元索引。
在一种可能的实施方式中，该反馈资源包括用于接收侧行反馈信息的第二反馈资源；该第二反馈资源包含于以下至少一个时域单元：
该COT内的最后一个时域单元；
该COT内的时域单元n，该n的值为根据侧行反馈的周期N PSFCH和该COT的起始时域单元确定的。
在一种可能的实施方式中，该n满足n＝n start,COT+N PSFCH·N+C，该N为大于0的整数，该C为大于或等于0的整数，该n start,COT为该COT的起始时域单元索引。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括侧行反馈信息；
该第一信息指示该侧行信息所在的时域单元包括反馈资源或者该侧行信息中包括反馈信息时，该侧行信息为第一侧行信息。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第二信息用于指示以下之一：
该侧行信息所在的时域单元不包括反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该侧行信息为第一侧行信息；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源，该侧行信息为第一侧行信息。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
在一种可能的实施方式中，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源相对于承载该侧行信息的时域单元的偏移值。
在一种可能的实施方式中，该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该 侧行反馈信息的第二反馈资源的偏移值；或，该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源的偏移值的范围。
在一种可能的实施方式中，该侧行反馈信息为第二终端设备对该第一终端设备发送的第二侧行信息的反馈。
在一种可能的实施方式中，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息包括以下至少之一：
指示第三终端设备的标识ID的信息，该第三终端设备为接收该侧行反馈信息的目标终端；
指示混合自动重传请求HARQ进程ID的信息。
在一种可能的实施方式中，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息用于指示所反馈的侧行数据信息的资源位置。
在一种可能的实施方式中，该反馈指示信息包括以下至少之一：
指示该侧行数据信息和该侧行反馈信息之间的时域单元间隔信息；
指示该侧行数据信息的频域信息。
在一种可能的实施方式中，该侧行数据信息的频域信息包括该侧行数据的资源块PRB索引或该侧行数据的PRB与资源池边缘的PRB的差值。
在一种可能的实施方式中，该侧行信息中的侧行反馈信息为对第一时频范围内接收的至少一个侧行信息的反馈，该至少一个侧行信息为该第一终端设备接收的来自至少一个第三终端设备的侧行信息。
在一种可能的实施方式中，该侧行反馈信息包括反馈指示信息，该反馈指示信息包括该至少一个侧行信息的时频位置的索引。
在一种可能的实施方式中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第四信息用于确定承载该侧行信息的资源在该COT中的位置。
在一种可能的实施方式中，该第四信息包括以下至少之一：
该COT的时域长度，该COT的时域长度包括该COT的时域单元数量L；
承载该侧行信息的时域单元在COT内的时域单元索引；
该COT的剩余时域长度，该剩余时域长度包括该COT的剩余时域单元数量；
该侧行信息传输的索引。
上述第三方面以及上述第三方面的各可能的实施方式所提供的通信方法，其有益效果可以参见上述第一方面以及第一方面的各可能的实施方式所带来的有益效果，在此处不再赘述。
第四方面，本申请实施例提供一种通信装置，包括：收发单元，用于接收第一终端设备在COT内发送的侧行信息，该COT包括L个时域单元，L为大于1的整数；处理单元，用于根据该侧行信息确定反馈资源，该反馈资源用于接收或者发送侧行反馈信息。
在一种可能的实施方式中，该侧行信息包括侧行控制信息，该侧行控制信息用于指示该第二终端设备在该COT内接收或者发送侧行反馈信息的反馈资源。
在一种可能的实施方式中，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括反馈信息；或者，
该侧行控制信息中的第二信息用于指示以下之一：
该侧行信息所在的时域单元不包括反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源。
在一种可能的实施方式中，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
在一种可能的实施方式中，该收发单元还用于：
在该第一反馈资源接收该第一终端设备发送的侧行反馈信息；和/或，
在该第二反馈资源向该第一终端设备发送侧行反馈信息。
上述第三方面以及上述第三方面的各可能的实施方式所提供的通信方法，其有益效果可以参见上述第一方面以及第一方面的各可能的实施方式所带来的有益效果，在此处不再赘述。
第五方面，本申请实施例提供一种通信装置，包括：处理器和存储器，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行如第一方面或第一方面各可能的实现方式中的方法。
第六方面，本申请实施例提供一种通信装置，包括：处理器和存储器，该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行如第二方面或第二方面各可能的实现方式中的方法。
第七方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机指令，使得安装有该芯片的设备执行如第一方面或第一方面各可能的实现方式中的方法。
第八方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机指令，使得安装有该芯片的设备执行如第二方面或第二方面各可能的实现方式中的方法。
第九方面，本申请实施例提供一种计算机可读存储介质，用于存储计算机程序指令，该计算机程序使得计算机执行如第一方面或第一方面各可能的实现方式中的方法。
第十方面，本申请实施例提供一种计算机可读存储介质，用于存储计算机程序指令，该计算机程序使得计算机执行如第二方面或第二方面各可能的实现方式中的方法。
第十一方面，本申请实施例提供一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如第一方面或第一方面各可能的实现方式中的方法。
第十二方面，本申请实施例提供一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行如第二方面或第二方面各可能的实现方式中的方法。
附图说明
图1示出了适用于本申请实施例的侧行传输方法的通信系统100的示意图；
图2a为本申请提供的一种非授权频谱的侧行传输示意图；
图2b为本申请提供的另一种非授权频谱的侧行传输示意图；
图2c为本申请提供的另一种非授权频谱的侧行传输示意图；
图3a为本申请提供的一种非授权频谱的合并式侧行传输示意图；
图3b为本申请提供的另一种非授权频谱的合并式侧行传输示意图；
图4是本申请实施例提供的一种通信方法200的示意性交互流程示意图；
图5为本申请实施例提供的一种示例性的COT结构；
图6为本申请实施例提供的一种侧行传输示意图；
图7为本申请实施例提供的一种反馈资源时频位置指示示意图；
图8为本申请实施例提供的一种第一时频范围示意图；
图9是本申请实施例提供的通信装置的示意性框图；
图10是本申请实施例提供的通信装置的另一示意性框图；
图11是本申请实施例提供的终端设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请提供的通信方法可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新空口(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信系统。
在一些实施例中，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
在一些实施例中，本申请实施例中的通信系统可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信系统也可以应用于授权频谱，其中，授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、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等。
终端设备可以是WLAN中的站点(STATION，ST)，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)设备、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、下一代通信系统例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定，在本申请实施例中，网络设备可以具有移动特性，例如网络设备可以为移动的设备。在一些实施例中，网络设备可以为卫星、气球站。例如，卫星可以为低地球轨道(low earth orbit，LEO)卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。在一些实施例中，网络设备还可以为设置在陆地、水 域等位置的基站。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
应理解，本申请对于网络设备和终端设备的具体形式均不做限定。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例的通信系统。图1示出了适用于本申请实施例的侧行传输方法的通信系统的示意图。如图1所示，通信系统100可以包括至少一个网络设备和多个终端设备，例如图1中所示的网络设备110、终端设备121至123。网络设备110和各终端设备121至123可分别通过无线空口通信，终端设备之间可以通过车用无线通信技术通信。例如图1中所示的终端设备121与终端设备122之间可以相互通信，终端设备121与终端设备123之间也可以相互通信。
应理解，图1仅为示例，示出了终端设备121向终端设备122发送信令和/或数据以及终端设备123向终端设备121发送信令和/或数据的场景，但这不应对本申请构成任何限定。终端设备122与终端设备123之间也可以由信令和/或数据的交互。本申请实施例对此不做限定。
还应理解，图1仅为示例，示出了一个网络设备和四个终端设备。但这不应对本申请构成任何限定。该通信系统100还可以包括更多的网络设备，也可以包括更多或更少的终端设备。本申请实施例对此不做限定。
在图1所示的通信系统中，终端设备之间可通过侧行链路来进行数据和信令的传输。终端设备通过侧行链路通信所使用的资源可以由网络设备分配。换言之，网络设备为侧行传输分配资源。例如，图1中的终端设备121可通过网络设备分配的资源向终端设备122发送信令和/或数据，终端设备121可通过网络设备分配的资源向终端设备123发送信令和/或数据。
终端设备之间进行信令和/或数据交互的侧行链路(Sidelink，SL)，其包括的信道类型有：物理侧行链路控制信道(Physical Sidelink Control Channel，PSCCH)，物理侧行链路共享信道(Physical Sidelink Shared Channel，PSSCH)，物理侧行链路广播信道(Physical Sidelink Broadcast Channel，PSBCH)和物理侧行链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)中的全部或者部分。其中，PSCCH承载有第一级控制信息，PSSCH承载有第二级控制信息和/或数据，PSFCH承载有反馈信息。
网络设备例如可以通过如下列举的两种模式为侧行链路分配资源：
模式(mode)1：网络设备可以调度资源给终端设备进行侧行传输。比如，图1中所示的网络设备110可以分别调度资源给终端设备121和终端设备122进行侧行传输。
模式2：终端设备可以从网络设备预配置的资源中选择资源进行侧行传输。比如，图1中的终端设备121和终端设备122可分别从网络设备预配置的资源中选择资源进行侧行传输。
在模式2中，终端设备对资源的选择可以包括如下三种方式：基于全感知(full sensing)的资源选择、基于部分感知(partial sensing)的资源选择和随机选择(random selection)。
在非授权频谱上，不同的无线接入技术(radio access technology，RAT)可以共享该频谱。例如，蜂窝网络(如5G网络，LTE网络)和WiFi网络可以共享该频谱。基于信道公平竞争原则，使用不同接入技术RAT的接入设备(如基站、UE、AP)在接入非授权的信道时，均需要进行空闲信道评估(Clear Channel Assessment，CCA)，在评估该信道为空闲时，接入设备可以使用该信道进行发送。先听后说(Listen Before Talk，LBT)也是空闲信道评估的一种方式，下面以LBT进行示例性的说明。
第一方面，上述两种资源分配模式均以时隙为粒度进行资源选择或者调度，也即终端设备的每次传输在时域上占一个时隙。此种情况下，终端设备在侧行信息传输的过程中，终端设备发送的侧行数据信息(例如可以是传输块(transport block，TB))，无论是发送同一TB的初传或重传，还是发送不同的TB，均可能因其发送间隔时间超过门限而进行LBT。参见图2a所示，初传的TB1和初传的TB之间存在时间间隔，假设该时间间隔大于门限(例如16us)，终端设备在初传TB1和初传TB2之前均需要进行LBT检查信道的占用情况；尤其是在使能SL混合自动重传(hybrid automatic repeat request，HARQ)时，初传的TB1和接收侧行反馈信息之间存在时间间隔1，以及接收侧行反馈信息和重传TB1之间存在时间间隔2，导致初传TB1和重传TB1之间的时间间隔较大，终端设备在发送重传时需要进行较长时间的LBT，可参见图2b。
第二方面，当终端设备需要发送多个不同的TB时，需要进行多次LBT，若LBT失败，则相应的TB将无法传输。结合图2c所示，由于终端设备的LBT失败，导致TB1无法发送(以虚线标识)。
在终端设备需要多次接入信道时，终端设备频繁进行LBT检测信道是否空闲，导致传输效率较低；终端设备LBT失败导致相应的数据无法传输。因此，为了支持在非授权频谱上进行侧行传输，如何降低LBT的次数，提高传输效率，以及提高传输可靠性是当前亟待解决的问题。
进一步的，在侧行反馈场景中，以混合自动重传(hybrid automatic repeat request，HARQ)反馈为例，接收端设备向发送端设备反馈该发送端设备发送的数据是否成功解码，发送端设备可以根据接收端设备发送的HARQ反馈信息，确定是否需要重传数据。接收端设备对接收到的数据进行解码以及生成HARQ反馈信息需要一定时间，也即在接收数据和发送反馈信息之间存在时间间隔，如果在该时间间隔内其他接入设备接入并抢占了非授权信道，接收端设备将无法及时向发送端设备发送HARQ反馈信息。
针对上述问题，本申请实施例在侧行传输中引入信道占用时间(Channel Occupancy Time，COT)，终端设备在COT内与其他终端设备之间传输侧行信息(包括信令和/或数据)，避免传输的侧行信息因时域间隔大于门限(例如16us)，而需要重新进行空闲信道评估的问题，减少了空闲信道评估的频率，同时避免因空闲信道评估失败导致数据无法发送的问题，提高了传输的可靠性。
在此基础上，本申请实施例通过在COT内接收或者发送反馈信息，以期解决在非授权频谱上传输反馈信息的时延较大的问题。
本申请实施例针对以上所要解决的技术问题，提出以下两种可能的应用场景，在以下场景中终端设备在非授权频谱上进行SL通信时，将多个TB排列在一起，通过一次LBT对多个TB进行传输，也即在COT内传输多个侧行信息。应理解，以下两种可能的应用场景仅为清楚理解本申请而进行的示例性的说明，不应对本申请构成任何限定。
场景一、待发送的多个侧行信息(例如TB)的资源选择窗如果在时域上重叠，终端设备可以在选择窗的重叠位置连续发送多个TB，且多个TB传输之间的时间间隔小于门限(例如16us)，终端设备可以只经过一次LBT就连续发送该多个TB。如图3a所示，在时隙n，终端设备触发对于TB1传输的资源选择，资源选择窗的位置对应在时隙[n+T1，n+T2]之间，在时隙n'终端设备触发对于TB2传输的资源选择，资源选择窗的位置位于时隙[n'+T1，n'+T2]之间。当终端设备在时隙n触发对于TB1传输的资源选择时，终端设备可以等待一段时间，直到在时隙n'确定需要针对TB2传输进行资源选择，此种情况下，终端设备可以选择在时隙[n'+T1，n+T2]之间将TB1和TB2连续发送出去。
为了确保足够的资源用于数据的发送以及留给终端足够多的处理时间，终端设备需要“等待”的这段时间应小于TB1的包时延预算(Packet Delay Budget，PDB)。例如，图中的时隙[m-n]应小于或等于L，L为大于0且小于TB1的PDB的整数。
场景二、终端设备在发送TB1时，由于LBT失败，信道接入失败导致无法发送TB1(以虚线标识)，但是发送TB2时，信道接入成功，那么终端设备可以将TB2与未发送的TB1通过一次LBT，连续发送出去。参见图3b所示。
可选的，考虑到反馈时延的限制，之前未能发送的TB1在时延较长，也即TB1剩余的PDB较少，那么TB1可以先与TB2发送。
应理解，上述两种场景中，终端设备均可以通过COT预留的方式，指示占用一段时间，以连续发送多个TB，达到通过一次LBT发送多个侧行信息的目的。
需要说明的是，本申请实施例中，在信道占用时间内，终端设备之间传输的侧行信息可以是侧行数据信息(如上述TB)、侧行控制信息、侧行反馈信息中的至少一种，其中，侧行数据信息例如可以通过PSSCH承载，侧行控制信息例如可以通过PSSCH和/或PSCCH承载，侧行反馈信息例如可以通过PSFCH承载。针对侧行传输中的任一终端设备，在信道占用时间内可以发送和/或接收侧行信息。
本申请实施例中涉及的PSSCH、PSCCH、PSFCH可以理解为物理资源，也可以理解为通过这些资源传输的数据、控制信息、信令等。例如，终端设备通过PSSCH发送数据或者数据和二级SCI，也可以表述为终端设备发送PSSCH；终端设备通过PSCCH发送控制信息，如一级SCI，也可以表述为终端设备发送PSCCH；终端设备通过PSFCH发送反馈消息，比如HARQ消息，也可以表述为终端设备发送PSFCH。本领域的技术人员可以理解其含义。
下面将结合附图对本申请实施例提供的侧行传输方法做详细说明。
应理解，下文仅为便于理解和说明，以第一终端设备与其他终端设备(例如第二终端设备或第三终端设备)之间的交互为例详细说明本申请实施例所提供的方法。该第一终端设备、第二终端设备和第三终端装置例如可以是图1所示的通信系统中的终 端设备。比如，第一终端装置可以是图1中的终端设备121，第二终端装置可以是图1中的终端设备122，第三终端设备可以是图1中的终端设备123。
但应理解，这不应对本申请提供的方法的执行主体构成任何限定。只要能够通过运行记录有本申请实施例提供的方法的代码的程序，已根据本申请实施例提供的方法，便可以作为本申请实施例提供的方法的执行主体。例如，下文实施例所示的第一终端设备也可以替换为该第一终端设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块。第二终端设备也可以替换为该第二终端设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块等。第三终端设备也可以替换为该第三终端设备中的部件，比如芯片、芯片系统或其他能够调用程序并执行程序的功能模块等。
需要说明的是，第二终端设备可以为第一终端设备的接收端设备，第二终端设备的数量为一至多个，在第二终端设备的数量为多个时，可以理解为第一终端设备向多个不同的第二终端设备发送侧行数据信息和/或侧行控制信息，第二终端设备可以针对接收到的侧行数据信息向第一终端设备发送侧行反馈信息；第三终端设备可以为第一终端设备的发送端设备，第三终端设备的数量为一至多个，在第三终端设备的数量为多个时，可以理解为多个不同的第三终端设备分别向第一终端设备发送侧行数据信息和/或侧行控制信息，第一终端设备可以针对第三终端设备发送的的侧行数据信息向第三终端设备发送侧行反馈信息。应理解，第二终端设备与第三终端设备可以为同一终端设备，例如，第二终端设备也可以向第一终端设备发送侧行数据信息和/或侧行控制信息，第一终端设备可以针对接收到第二终端设备的侧行数据信息向第二终端设备发送侧行反馈信息。或者第二终端设备与第三终端设备为不同的终端设备，第一终端设备向第二终端设备发送的侧行信息中可能包含需要向第三终端设备反馈的侧行反馈信息。
本申请实施例中，第一终端设备可以在COT内发送M个侧行信息和接收N个侧行信息，其中，M和N为大于或等于0的整数且M和N不同时为0。需要说明的是，M个侧行信息可以是第一终端设备发送给同一接收端设备(例如第二终端设备)的，或者M个侧行信息可以是第一终端设备发送给不同接收端设备(例如多个不同的第二终端设备)；类似的，N个侧行信息可以是第一终端设备接收同一发送端设备(例如第二终端设备)发送的，或者N个侧行信息可以是第一终端设备接收不同发送端设备(例如多个不同的第二终端设备)发送的。
本申请实施例中，COT可以包括L个时域单元，L为大于1的整数。示例性的，第一终端设备可以在L个时域单元中的一个时域单元发送或者接收一个侧行信息。该时域单元例如可以是一个或多个符号、一个或多个时隙、一个或多个子帧等，应理解，时域单元不一定是最小的时间单位，本申请实施例以时域单元为时隙为例进行说明。
可选的，L个时域单元可以是连续的，也即相邻时域单元之间没有时域间隔，或者相邻时域单元之间的时域间隔小于或者等于门限(例如16us)。其中，门限可以是协议定义的或者网络设备配置的或者预设在终端设备中的。
应理解，COT的时域长度为L个时域单元的时域长度和L个时域单元之间的时域间隔之和。在一些实施例中COT的时域长度可以通过时域单元的数量L表示。
在一些实施例中，第一终端设备可以通过任一侧行信息中的侧行控制信息(sidelink control information，SCI)，例如一级SCI和/或二级SCI，向其他终端设备(例如第二终端设备)指示COT的时域长度。
图4是本申请实施例提供的一种通信方法200的示意性交互流程示意图。如图4所示，该方法200可以包括S210和S220中的至少部分内容。下面对方法200中的各个步骤做详细说明。
S210，第一终端设备在COT内向第二终端设备发送侧行信息；
S220，第一终端设备在该COT内接收第二终端设备发送的侧行信息。
需要说明的是，在M和N均不等于0时，第一终端设备和第二终端设备执行上述S210和S220，且上述S210和S220中的第二终端设备可以是不同的终端设备；在M等于0时，第一终端设备和第二终端设备不执行S210，执行S220；在N等于0时，第一终端设备和第二终端设备不执行S220，执行S210。
应理解的是，上述S210中第一终端设备在COT内向第二终端设备发送的侧行信息可以是前述M个侧行信息中的至少一个侧行信息；上述S220中第一终端设备接收第二终端设备发送的侧行信息可以是前述N个侧行信息中的至少一个侧行信息。
还应理解的是，S220中第二终端设备在该COT内发送的侧行信息可以是第二终端设备针对S210中第一终端设备发送的侧行信息的侧行反馈信息；S220中第二终端设备在该COT内发送的侧行信息可以是第二终端设备针对S210中第一终端设备发送的侧行反馈信息的重发。
还应理解的是，S220中第二终端设备在该COT内发送的侧行信息可以是的侧行数据信息和/或侧行控制信息；S220中第二终端设备在该COT内发送的侧行信息可以是侧行数据信息和/或侧行控制信息的重发。
在一些实施例中，M个侧行信息和N个侧行信息中包括至少一个第一侧行信息，该第一侧行信息包括侧行反馈信息。承载该侧行反馈信息的资源即为反馈资源。下文中第一终端设备发送侧行反馈信息的资源称为第一反馈资源，第一终端设备接收侧行反馈信息的资源称为第二反馈资源。
可选的，上述反馈资源(包括第一反馈资源和/或第二反馈资源)可以是网络设备配置的，或者预配置的，例如预设置于第一终端设备、第二终端设备和第三终端设备中的，或者可以是M个侧行信息和N个侧行信息中的任一侧行信息中的侧行控制信息指示的。
在一些实施例中，M个侧行信息和N个侧行信息中的任一侧行信息均可以包括侧行控制信息和/或侧行数据信息。其中侧行控制信息和侧行数据信息均可以是初传的或者重传的。
本申请实施例对于反馈资源(包括第一反馈资源和/或第二反馈资源)的时域位置给出如下示例性的说明：
一、第一反馈资源：用于承载第一终端设备向其他终端设备(例如第二终端设备)发送的侧行反馈信息。第一反馈资源可以包括以下至少一个时域单元：
该COT内的第一个时域单元；
该COT内的时域单元m，m的值为根据侧行反馈的最小时间间隔N gap和该COT 的起始时域单元确定的；
该COT内的时域单元k，k的值为根据侧行反馈的最小时间间隔N gap和侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
可以理解的是，第一反馈资源包括COT内的第一个时域单元，也即第一终端设备在COT的第一个时域单元对接收到的侧行数据信息进行反馈，这样能够最大限度减少侧行反馈信息与所需反馈的侧行数据信息之间的时域间隔，降低反馈信息的传输时延。
在一些场景中，第一终端设备接收其他终端设备发送的侧行数据信息与COT的时域间隔较近，例如侧行数据信息的时域位置与COT的起始时域单元的时域位置间隔小于最小时间间隔N gap时，或者侧行数据PSSCH的最后一个时域单元结束时刻与COT的起始时域单元的起始时刻的时域间隔小于最小时间间隔N gap时，为了确保第一终端设备有足够的处理时间生成并发送侧行反馈信息，可以根据最小时间间隔N gap和该COT的起始时域单元确定第一反馈资源，也即第一反馈资源的时域单元m与最小时间间隔N gap和该COT的起始时域单元相关。第一终端设备在时域单元m发送侧行反馈信息在降低反馈时延的同时可以确保COT之前接收到的侧行数据信息均得到反馈。
例如，假设最小时间间隔N gap＝2，第一反馈资源可以包括COT内的第二个时域单元，也即第一终端设备在COT内的第二个时域单元向第二终端设备发送侧行反馈信息，以对第二终端设备在该COT之前发送给第一终端设备的侧行数据信息进行响应。再例如，假设最小时间间隔N gap＝3，第一反馈资源可以包括COT内的第三个时域单元，也即第一终端设备在COT内的第三个时域单元向第二终端设备发送侧行反馈信息，以对第二终端设备在该COT之前发送给第一终端设备的侧行数据信息进行响应。
结合COT内的起始时域单元索引进行说明：该m满足m＝N gap+n start,COT-1，n start,COT为该COT的起始时域单元索引。仍以上述最小时间间隔N gap＝2为例，假设n start,COT＝5，则m＝6，也即COT内的第二个时域单元。
在一些场景中，第一终端设备接收其他终端设备在该COT发送的侧行数据信息，为了确保第一终端设备有足够的处理时间针对该COT内接收的侧行数据信息生成并发送侧行反馈信息，可以根据最小时间间隔N gap和侧行反馈信息所响应的侧行数据信息在COT的接收位置确定第一反馈资源，也即第一反馈资源的时域单元k与最小时间间隔N gap和所响应的侧行数据信息在COT的接收位置相关。第一终端设备在时域单元k发送侧行反馈信息可以实现对COT内接收到的侧行数据信息进行及时的反馈。
例如，假设最小时间间隔N gap＝2，第一终端设备在COT的第一个时域单元接收到第二终端设备发送的侧行数据信息，或者接收到第二终端设备发送的包含侧行数据 信息的侧行信息，则第一反馈资源可以包括COT内的第三个时域单元，也即第一终端设备在COT内的第三个时域单元向第二终端设备发送侧行反馈信息。
结合所响应的侧行数据信息在COT内的接收的时域单元索引进行说明：该k满足k＝N gap+n PSSCH，其中，n PSSCH为在COT内接收该侧行数据信息的时域单元索引。仍以上述最小时间单元间隔N gap＝2为例，假设n PSSCH＝6，则k＝8。
在一些实施例中，第一反馈资源可以包括上述COT内的第一个时域单元、COT内的时域单元m、COT内的时域单元k中任意两项或三项的组合。例如第一个时域单元可以作为侧行反馈信息的固定的发送机会进行配置，时域单元m和/或时域单元k可以作为额外的侧行反馈信息的发送机会进行配置。额外的侧行反馈信息的发送机会可以由基站通过高层信令，如RRC信令，MAC CE等配置给第一终端设备或者配置在资源池上；也可以由其他终端设备(如第二终端设备)，通过第一终端设备与其他终端的高层参数，如PC-5RRC，或者动态信令配置或者指示。实现对不同侧行数据信息进行及时及有效的反馈。
另外需要说明的是时域单元索引可以为COT的时域单元索引；也可以是用于侧行传输的资源池的时域单元索引，既逻辑时域单元索引；还可以是配置在系统帧上的时域单元索引，既物理时域单元索引。COT内的时域单元索引既对应于一个逻辑时域单元索引，也对应于一个物理时域单元索引。
二、第二反馈资源：用于承载第一终端设备接收其他终端设备(例如第二终端设备)发送的侧行反馈信息。第二反馈资源可以包括以下至少一个时域单元：
该COT内的最后一个时域单元；
该COT内的时域单元n，所述n的值为根据侧行反馈的周期N PSFCH和该COT的起始时域单元确定的。
可以理解的是，第二反馈资源包括COT内的最后一个时域单元，也即第一终端设备在COT的最后一个时域单元接收其他终端设备(例如第二终端设备)发送的侧行反馈信息，最大限度的获取其他终端设备针对COT内发送的侧行数据信息的反馈，降低侧行反馈信息的接收时延。
在一些场景中，第一终端设备需要针对其他终端设备(例如第二终端设备)发送的侧行反馈信息进行调度重传，为了确保第一终端设备有足够的时间在COT内完成调度重传，可以根据侧行反馈的周期N PSFCH和COT的起始时域单元确定第二反馈资源，也即第二反馈资源的时域单元n与侧行反馈的周期N PSFCH和COT的起始时域单元相关。第一终端设备在时域单元n接收侧行反馈信息，降低了侧行反馈信息与重传之间的时延。
例如，时域单元n可以为侧行反馈的周期N PSFCH的整数倍时域单元，当COT内的时域单元索引从1开始编号时，时域单元n＝N PSFCH·N，当COT内的时域单元索引从0开始编号时，时域单元n＝N PSFCH·N-1，N为正整数。为了进一步降低第二反馈资源的时域密度，可以配置一个调整参数β，β大于1，时域单元
Figure PCTCN2022117743-appb-000001
再例如，该n可以满足：n＝n start,COT+N PSFCH·N+C，N为大于0的整数，C为大于或等于0的整数，n start,COT为该COT的起始时域单元索引。
可选的，侧行反馈的周期N PSFCH可以是资源池上配置的所有反馈周期的最大值，例如N PSFCH＝4。此种情况下，可以避免第一终端设备接收到侧行反馈信息后，收发转换的间隔时间过长，导致信道丢失的问题。
在一些实施例中，COT的最后一个时域单元可以作为侧行反馈信息的固定的接收机会进行配置，时域单元n可以作为额外的侧行反馈信息的接收机会进行配置。额外的侧行反馈信息的发送机会可以由基站通过高层信令，如RRC信令，MAC CE等配置给第一终端设备或者配置在资源池上；也可以由其他终端设备(如第二终端设备)，通过第一终端设备与其他终端的高层参数，如PC-5RRC，或者动态信令配置或者指示。
另外需要说明的是时域单元索引可以为COT的时域单元索引；也可以是用于侧行传输的资源池的时域单元索引，既逻辑时域单元索引；还可以是配置在系统帧上的时域单元索引，既物理时域单元索引。COT内的时域单元索引既对应于一个逻辑时域单元索引，也对应于一个物理时域单元索引。
上述任一反馈资源的时域位置与该COT的时域长度有关。也即时域单元m、k、n应处于COT内，若时域单元m、k或n不处于COT内，则该时域单元m、k或n不属于反馈资源。举例而言，COT的时域长度为2ms(即包括两个时隙)，那么根据上述推演，在最小时间间隔N gap＝2时，时域单元m为COT内的第二个时隙，时域单元k为COT内的第三个以及第三个之后的任一时隙，而该COT内仅包括两个时隙，因此第一反馈资源的时域位置在该COT内为第一个时域单元(在一些场景中也可以是第二时域单元)，但不能是时域单元m和时域单元k。
为了清楚说明反馈资源的时域位置与COT的时域长度之间的关系。下面结合表2所示，以子载波间隔(subcarrier spacing，SCS)为15kHz，时域单元
Figure PCTCN2022117743-appb-000002
β＝1，N PSFCH＝4，N＝1为例。其中，COT的时域长度为2ms时，第一反馈资源包括第一个时隙，在最小时间单元间隔N gap＝2的情况下，第一反馈资源还可以包括第二个时隙，且不包括任一第二反馈资源；COT的时域长度为4ms时，第一反馈资源可以包括第一个时隙，还可以包括第二个时隙或第三个时隙，例如最小时间单元间隔N gap＝2时，第一反馈资源包括第二个时隙，N gap＝3时，第一反馈资源包括第三个时隙，第二反馈资源可以包括第四个时隙；COT的时域长度为6ms时，第一反馈资源可以包括第一个时隙，还可以包括第二个时隙或第三个时隙，第二反馈资源可以包括第六个时隙和第四个时隙；COT的时域长度为10ms时，第一反馈资源包括第一个时隙，还可以包括第二个时隙或第三个时隙，第二反馈资源可以包括第十个时隙、第四个时隙和第八个时隙。应注意，表1中的时隙索引为COT的时隙索引。
表1
Figure PCTCN2022117743-appb-000003
Figure PCTCN2022117743-appb-000004
本申请实施例中“反馈”与“响应”交替使用，其所表达的意思一致，即对侧行数据信息进行反馈也可以描述为对侧行数据信息进行响应。
图5为一种示例性的COT结构，如图5所示，COT内包括6个时域单元，每个时域单元例如可以是一个时隙，每个时隙内承载一个侧行信息，每个侧行信息包括侧行数据信息和侧行控制信息，或者说每个时隙包括侧行数据资源(例如PSSCH)和侧行控制资源(例如PSCCH)，每个侧行信息可以是发送给不同的第二终端设备，例如第一个时隙内的侧行信息是发送给组播组1内的所有终端设备，第二、四、六个时隙内的侧行信息是发送给UE3的，第三个时隙内的侧行信息是发送给UE4的，第五个时隙内的侧行信息是发送给UE2的。如图5所示，第一时隙还包括第一反馈资源(例如PSFCH)，第四个时隙还包括第二反馈资源，第六个时隙还包括第二反馈资源。
示例性的，图5所示的COT内的任一时域单元传输的侧行数据信息可以是初传的或者重传的，例如，第一个时域单元至第五个时域单元传输的侧行数据信息均为初传的TB(如分别为TB1～TB5)，第六个时域单元传输的侧行数据信息为重传的TB(如重传的TB2)。
可选的，反馈资源PSFCH可以位于时域单元中的倒数第二个符号和倒数第三个符号。也可以位于倒数第二个或者最后一个符号。
应理解，第一终端设备发送的侧行信息所在的时域单元中，可以包括第一反馈资源，或者可以包括第二反馈资源，也即第一终端设备可以在用于发送侧行信息的时域单元中接收或者发送侧行反馈信息；第一终端设备接收的侧行信息所在的时域单元中，可以包括第一反馈资源，或者可以包括第二反馈资源，也即第一终端设备可以在用于接收侧行信息的时域单元中接收或者发送侧行反馈信息。
第一终端设备可以在上述第一反馈资源和第二反馈资源的每个资源位置上传输侧行反馈信息，或者第一终端设备可以选择在上述第一反馈资源和第二反馈资源中的至少一个反馈资源上传输侧行反馈信息。
其区别在于，第一终端设备在第一反馈资源和第二反馈资源的每个资源位置上传输侧行反馈信息，可以完全依赖半静态调度所配置的反馈资源进行传输，不需要终端设备再次确定反馈资源，节省了终端设备的开销，提高了处理效率；而第一终端设备选择在第一反馈资源和第二反馈资源中的至少一个反馈资源上传输侧行反馈信息，在不需要传输侧行反馈信息时，反馈资源可用于传输其他信息，实现了传输资源的灵活使用。
在一些实施例中，M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第四信息用于确定承载该侧行信息的资源在COT中的位置。示例性的，第四信息包括以至少之一：
COT的时域长度，COT的时域长度包括COT的时域单元数量L；
承载侧行信息的时域单元在COT内的时域单元索引；
COT的剩余时域长度，该剩余时域长度包括COT的剩余时域单元数量；
侧行信息传输的索引。
例如，第一终端设备向其他终端设备(例如第二终端设备)指示COT内时域单元索引和/或COT的时域长度。结合图5所示，COT长度为6个时隙，在第一个时域单元中指示当前时域单元索引为1，COT长度为6，在第二个时域单元中指示当前时域单元索引为2，COT长度为6，以此类推。第二终端设备根据第一终端设备指示的COT的时域单元索引和/或COT的时域长度，即可确定当前时域单元中是否包括反馈资源。
可选的，第一终端设备可以通过侧行信息中的侧行控制信息指示COT内时域单元索引和/或COT的时域长度。
再例如，第四信息还可以指示剩余时域单元个数，该剩余单元可以包括或者不包括当前的时域单元。示例性的，第二终端设备根据该剩余时域单元个数和偏移值可以确定下一个第二反馈资源所在的时域单元在COT内的位置。结合图5所示，第一个时隙(时域单元)中的第四信息指示剩余时域单元个数为6，类似的，第二个时隙中的第四信息指示剩余时域单元个数为5。其他时隙中的第四信息指示的内容以此类推即可，此处不再赘述。
侧行信息的传输索引用于指示当前传输的侧行信息在该COT内的位置，例如COT内可以传输6个侧行信息，该6个侧行信息的传输索引依次为1至6。例如，结合图5所示，一个时域单元用于传输一个侧行信息，第一个时域单元中的侧行信息的传输索引为1，第二个时域单元中的侧行信息的传输索引为2，以此类推。应理解，侧行信息的传输索引可以为任意规律数值，且可以由任一数值开始，例如还可以是0至5。
可选的，第一终端设备和/或第二终端设备可以基于PSSCH的传输个数确定COT的长度。
进一步的，第一终端设备可以在侧行控制信息中携带侧行反馈信息的指示信息，用于指示当前侧行信息中PSSCH是否包含侧行反馈信息，或者指示PSSCH是否包含侧行反馈信息的发送和/或侧行反馈信息的接收，此时，第四信息包括侧行信息的传输索引。例如，侧行信息的传输索引为1时，侧行反馈信息的指示信息指示该侧行信息包含侧行反馈信息(如将该指示信息设置为“1”)或者该侧行信息包含侧行反馈接收；侧行信息的反馈索引为2、3、5时，侧行反馈信息的指示信息指示该侧行信息不包含侧行反馈信息(如将该指示信息设置为“0”)；侧行信息的反馈索引为4、6时，侧行反馈信息的指示信息指示该侧行信息包含侧行反馈信息(如将该指示信息设置为“1”)或者侧行信息包含侧行反馈发送。
第一终端设备和第二终端设备之间能够以PSSCH为粒度进行COT长度的确定和/或反馈指示，通过复用PSSCH传输侧行反馈信息，避免因PSSCH和PSFCH在频域上的资源大小不同，导致需要额外的功率切换时间的问题。
在一些实施例中，第一终端设备需要向其他终端设备(例如第二终端设备)指示反馈资源(包括上述第一反馈资源和/或第二反馈资源)，使第二终端设备能够在第一反馈资源上接收第一终端设备发送的侧行反馈信息，和/或在第二反馈资源上向第一终端设备发送侧行反馈信息。
第一终端设备可以通过侧行信息中的侧行控制信息，例如上述一级SCI和/或二级SCI，对COT内的反馈资源进行指示，该侧行信息可以是M个侧行信息和N个侧行信息中的任一侧行信息。一般来说，COT中的传输的每个侧行信息均包括侧行控制信息 或者每个侧行信息均与侧行控制信息关联。
示例性的，一个侧行信息中的侧行控制信息包括第一信息，该第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源，或者该侧行信息或者阈值关联的侧行信息中是否包括侧行反馈信息。可选的，第一信息可以仅在时域单元包括反馈资源时进行指示，或者第一信息可以在时域单元不包括反馈资源时进行指示，或者第一信息在时域单元包括或者不包括反馈资源时均指示。可以理解的是，第一信息指示该侧行信息所在的时域单元包括反馈资源或者该侧行信息中包括反馈信息时，该侧行信息为第一侧行信息。
例如，第一反馈资源为COT内的第一个时域单元和第三个时域单元，第一终端设备可以选择在第一个时域单元发送侧行反馈信息，在第三时域单元不发送侧行反馈信息。第一终端设备可以在第一时域单元发送的侧行控制信息中指示该第一时域单元发送侧行反馈信息，第一终端设备还可以在第三时域单元或者第三时域单元之前的时域单元(例如第一时域单元和/或第二时域单元)指示该第三时域单元不发送侧行反馈信息。
在一些实施例中，反馈资源可以通过第一终端设备向第二终端设备发送的侧行控制信息进行指示。一般来说，COT内的侧行信息中均包括或关联侧行控制信息。示例性的，一侧行信息中的侧行控制信息包括第二信息，该第二信息可以指示以下至少之一：
该侧行信息所在的时域单元不包括反馈资源；
该侧行信息所在的时域单元包括反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该侧行信息为第一侧行信息；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源，该侧行信息为第一侧行信息。
该侧行控制信息例如可以是上述SCI(包括一级SCI和/或二级SCI)。该第二信息例如可以是SCI中携带的PSFCH功能指示域。
作为另一种理解，第二信息可以指示以下至少之一：
该侧行信息或者关联的侧行信息不包括侧行反馈信息；
该侧行信息或者关联的侧行信息包括侧行反馈信息；
该侧行信息或者关联的侧行信息包括侧行反馈信息，且该侧行反馈信息为第一终端设备发送的；
该侧行信息或者关联的侧行信息包括侧行反馈信息，且该侧行反馈信息为第一终端设备接收的。
第二信息例如可以通过2bit进行指示，参见如下表2和表3所示：
表2
比特域值 第二信息
00 没有反馈资源
01 有反馈资源且反馈资源用于发送
10 有反馈资源且反馈资源用于接收
11 Reserved(保留)
表3
Figure PCTCN2022117743-appb-000005
第二信息例如可以通过1bit进行指示，参见如下表4和表5所示
表4
比特域值 第二信息
0 没有反馈资源
1 有反馈资源
表5
比特域值 第二信息
0 没有反馈信息
1 有反馈信息
上述反馈资源例如可以是PSFCH。
在一些实施例中，反馈资源可以通过第一终端设备向第二终端设备发送的侧行控制信息进行指示。一般来说，M个侧行信息和N个侧行信息中的任一侧行信息均包括或关联侧行控制信息。示例性的，一侧行信息中的侧行控制信息包括第三信息，该第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
示例性的，第二终端设备通过接收第三信息，能够提前确定下一个第二反馈资源的位置，确保第二终端设备能够在第二反馈资源正常发送侧行反馈信息，提高了传输的可靠性。
可选的，包括该第三信息的侧行控制信息中还可以包括第一信息和/或第二信息；或者第三信息还可以与上述半静态调度方式结合。
可选的，该第三信息可以包含于一级SCI或者二级SCI。
上述第三信息指示下一个第二反馈资源的位置具体可以通过第三信息中指示下一个用于接收侧行反馈信息的第二反馈资源相对于承载该侧行信息的时域单元的偏移值实现。
上述下一个用于接收侧行反馈信息的第二反馈资源相对于承载该侧行信息的时域 单元的偏移值，可以通过二进制比特进行指示。且指示偏移值的比特数例如可以根据SL带宽部分(band width part，BWP)最大的COT时域长度和配置在SL BWP上的SCS确定。例如指示偏移值的比特数
Figure PCTCN2022117743-appb-000006
其中，L mcot是SL BWP最大的COT时域长度，u用于表示SCS，且u与SCS具有对应关系，u与SRS之间的对应关系例如如下表6所示。
表6
u SCS
0 15kHz
1 30kHz
2 60kHz
3 120kHz
以L mcot＝10ms，SCS＝15kHz为例，需要采用4比特的值遍历所有的可能的偏移值(0～9)，如下表7为一种可能的实现方式。
表7
比特域值 偏移值
0000 0
0001 1
0010 2
0011 3
0100 4
0101 5
0110 6
0111 7
1000 8
1001 9
Others Reserved保留
可以理解的是，SL BWP的最大的COT时域长度越长，指示偏移值占用的的比特数越多，为了减小信令开销，第一信息可以在下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔时，包括指示下一个第二反馈资源的偏移值，而在下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔时，包括指示下一个第二反馈资源的偏移值的范围。需要说明的是，当下一个第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔时， 第二终端设备的处理时间(例如生成和/或发送侧行反馈信息所需的时间)较为不足，第一终端设备需要向第二终端设备进行指示，以便于第二终端设备及时处理或者重选资源；而下一个第二反馈资源的偏移值大于反馈约束的最小时间间隔时，第二终端设备的处理时间充足，第一终端设备可以暂不指示具体的偏移值，仅需指示第二终端设备偏移值大于反馈约束的最小时间间隔即可。
还应理解的是，反馈约束的最小时间间隔为比较阈值中的一例，并不对本申请构成任何限定。本申请实施例中还可以实际应用场景设置任意比较阈值。
以比较阈值为2为例，具体参见如下表8所示，偏移值小于或等于2时，第三信息指示具体的偏移值，在偏移值大于2时，第三信息指示偏移值的范围(大于2)。
表8
比特域值 偏移值
00 0
01 1
10 2
11 >2
在上述侧行控制信息包括第二信息和第三信息时，第二信息可以指示侧行信息所在的时域单元不包括反馈资源(例如表2中的“00”)，或者第二信息指示侧行信息所在的时域单元包括反馈资源且该反馈资源包括用于发送侧行反馈信息的第一反馈资源(例如表2中的“01”)，那么第二终端设备可以根据第二信息确定第一反馈资源，并根据第三信息确定第二反馈资源。此种情况下，第二信息不需要指示侧行信息所在的时域单元包括反馈资源且该反馈资源包括用于接收侧行反馈信息的第二反馈资源(例如表2中的“10”)，避免与之前的侧行控制信息中第三信息指示的内容重复；或者在第二信息指示侧行信息所在的时域单元包括反馈资源且该反馈资源包括用于接收侧行反馈信息的第二反馈资源(例如表2中的“10”)时，该第二信息无效，换言之，在侧行信息所在的时域单元包括反馈资源且该反馈资源包括用于接收侧行反馈信息的第二反馈资源时，第二终端设备以第三信息指示的第二反馈资源的位置为准。
如前所述侧行控制信息中的第四信息可以指示剩余时域单元个数，该剩余单元可以包括或者不包括当前的时域单元。示例性的，第二终端设备根据该剩余时域单元个数和偏移值可以确定下一个第二反馈资源所在的时域单元在COT内的位置。
示例性的，侧行控制信息中的一级SCI可以包括指示剩余时域单元个数的信息和上述第二信息，侧行控制信息中的二级SCI可以包括指示目标终端设备(例如第二终端设备)的标识ID的信息和上述第三信息。
例如，结合图5所示，第一个时隙(时域单元)中的一级SCI指示剩余时域单元个数为6、第二信息为“01”(指示当前时隙包括第一反馈资源)，第一时隙中的二级SCI指示目标终端设备为组播组、第三信息为“10”(结合表8所示，指示下一个第二反馈资源与当前时隙之间的时域间隔为2个时隙)，类似的，第二个时隙中的一级SCI指示剩余时域单元个数为5、第二信息为“00”(指示当前时隙不包括反馈资 源)，第一时隙中的二级SCI指示目标终端设备为UE3、第三信息为“01”(结合表8所示，指示下一个第二反馈资源与当前时隙之间的时域间隔为1个时隙)。其他时隙中的侧行控制信息指示的内容以此类推即可，此处不再赘述。
本申请实施例中第一终端设备对接收到的侧行信息(例如PSSCH)进行反馈，可以包括以下两种可能的实现方式：
方式一：第一终端设备仅向所需反馈的侧行信息的发送方发送侧行反馈信息。例如，结合图6所示，第二终端设备(UE1)向第一终端设备(UE2)发送侧行数据信息TB1，第一终端设备(UE2)在向第二终端设备(UE1)发送侧行数据信息TB2时，若针对TB1的HARQ反馈仍然满足时延要求，第一终端设备(UE2)可以向第二终端设备(UE1)连续发送PSSCH(承载TB2)和PSFCH(承载TB1的HARQ反馈)或者PSSCH与PSFCH的间隔小于阈值(如16us)。
方式二：第一终端设备向任一终端设备发送侧行反馈信息，也即该终端设备可以不是侧行反馈信息所反馈的侧行信息的发送方。此种情况下，第一终端设备在COT内发送的侧行反馈信息中可以包括反馈指示信息，该反馈指示信息用于对该侧行反馈信息的接收方(也即该侧行反馈信息所反馈的侧行数据信息的发送方，下文中也称其为第三终端设备)进行指示。
需要说明的是，第一终端设备在没有需要发送的侧行数据信息和/或侧行控制信息时，可以单独发送侧行反馈信息，在有需要发送的侧行数据信息和/或侧行控制信息时，可以将侧行反馈信息与侧行数据信息和/或侧行控制信息连续发送。若同一反馈资源中承载多个侧行反馈信息，该多个侧行反馈信息的目标终端设备可以相同也可以不同。
反馈指示信息至少可以包括以下三种可能的示例：
示例一，该反馈指示信息可以包括以下之一：
指示第三终端设备的标识ID的信息；
指示HARQ进程ID的信息。
需要说明的是，第三终端设备的ID的信息用于指示反馈的目标终端设备，HARQ进程ID的信息用于指示针对哪个HARQ进程的反馈。
当示例一应用于上述方式一时，第三终端设备和第二终端设备为同一终端设备，也即侧行信息的目标终端设备与侧行反馈信息的目标终端设备相同，侧行控制信息可以仅指示一个目标终端设备的ID。
示例二，该反馈指示信息可以用于指示所反馈的侧行数据信息的资源位置，该资源位置包括时域位置和或频域位置。在反馈指示信息用于指示所反馈的侧行数据信息的资源位置时，该反馈指示信息可以包括以下之一：
指示该侧行数据信息和该侧行反馈信息之间的时域单元间隔信息，可参见图7所示的时隙(时域单元)间隔；
指示该侧行数据信息的频域信息。
在一些实施例中，结合图7所示，侧行数据信息的频域信息可以是频域间隔，例如侧行数据信息与资源池边缘的距离，侧行数据信息的频域信息例如可以包括所述侧行数据的物理资源块(physical resource block，PRB)索引或侧行数据的PRB与资源池边缘的PRB的差值。
可以理解的是，在侧行反馈信息所反馈的侧行数据信息与该侧行反馈信息处于同一COT时，示例二中的反馈指示信息可以仅指示侧行数据信息和该侧行反馈信息之间的时域单元间隔信息，例如指示侧行数据信息相对于侧行反馈信息的时域单元偏移值等。
示例三，该反馈指示信息包括至少一个侧行信息的时频位置的索引。需要说明的是，在上述示例三中，反馈指示信息为对第一时频范围内接收的至少一个侧行信息的反馈，该至少一个侧行信息为第一终端设备接收的来自至少一个第三终端设备的侧行信息。
结合图8所示，例如第一时频范围的时域范围可以是时隙i+1到时隙i+3，i为正整数，将时域范围内所有可能用于侧行数据发送的子信道(sub channel)按照先频域后时域的方式进行排序得到时频位置的索引(1～12)，第一终端设备按照时频位置的索引，反馈以该sub channel作为起始子信道的侧行数据信息的侧行反馈信息。当仅反馈COT内的侧行数据信息时，第一终端设备可以仅反馈第一时频范围内，即时隙i+1到时隙i+3对应的侧行反馈信息。
可以理解的是，上述第一时频范围以及至少一个侧行信息的时频位置的索引均可以是以半静态配置的方式配置的。第一时频范围可以由基站通过高层信令，如RRC信令，MAC CE等配置给第一终端设备或者配置在资源池上；也可以由其他终端设备(如第二终端设备)，通过第一终端设备与其他终端的高层参数，如PC-5RRC，或者动态信令配置或者指示。
第一终端设备可以根据上述示例一、示例二或示例三中的反馈指示信息与侧行反馈信息(例如HARQ信息)，生成HARQ码本。
上述示例一、示例二和示例三均可以适用于上述方式一和方式二，并且均尤其适用于方式二。当上述示例一、示例二或示例三应用于上述方式一时，第三终端设备与第二终端设备为相同终端设备。
上述方式二通过示例一、示例二或示例三，可以实现第一终端设备向任意终端设备发送侧行反馈信息，使侧行反馈信息可以与侧行数据信息和/或侧行控制信息传输至不同的目标终端设备，实现了对反馈资源的灵活调度，降低了侧行反馈信息的时延。
因此，本申请实施例中，第一终端设备在COT内与其他终端设备之间传输侧行信息，避免传输的侧行信息因时域间隔大于门限，而需要重新进行空闲信道评估的问题，减少了空闲信道评估的频率，同时避免因空闲信道评估失败导致数据无法发送的问题，提高了传输的可靠性。
进一步的，本申请实施例通过在COT内接收或发送反馈信息，降低了反馈信息的传输时延。
以上，结合图4至图8详细说明了本申请实施例提供的方法。以下，结合图9至图11详细说明本申请实施例提供的装置。
图9是本申请实施例提供的通信装置的示意性框图。如图9所示，该装置300可以包括：收发单元310和处理单元320。
可选地，该通信装置300可对应于上文方法实施例中的第一终端设备，例如，可以为第一终端设备，或者配置于第一终端设备中的部件(如，芯片或芯片系统等)。
应理解，该通信装置300可对应于根据本申请方法实施例中所示的方法200中的第一终端设备，该通信装置300可以包括用于执行上述方法实施例中第一终端设备执行的方法的单元。并且，该通信装置300中的各单元和上述其他操作和/或功能分别为了实现图3中的方法200的相应流程。
其中，当该通信装置300用于执行图3中的方法200时，处理单元320可用于确定M个侧行信息和N个侧行信息，M和N为大于或者等于0的整数且M和N不同时为0；收发单元310可用于在COT内发送M个侧行信息和接收N个侧行信息，该COT包括L个时域单元，L为大于1的整数。
在一些实施例中，该M个侧行信息和该N个侧行信息中包括至少一个第一侧行信息，该第一侧行信息包括侧行反馈信息，承载该侧行反馈信息的反馈资源为网络设备配置的或者任一侧行信息中的侧行控制信息指示的或者预配置的。
在一些实施例中，该反馈资源的时域位置与该COT的时域长度相关。
在一些实施例中，该反馈资源包括用于发送侧行反馈信息的第一反馈资源，该第一反馈资源包含于以下至少一个时域单元：
该COT内的第一个时域单元；
该COT内的时域单元m，该m的值为根据侧行反馈的最小时间间隔N gap和该COT的起始时域单元确定的；
该COT内的时域单元k，该k的值为根据侧行反馈的最小时间间隔N gap和该侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
在一些实施例中，该m满足m＝N gap+n start,COT-1，该n start,COT为该COT的起始时域单元索引。
在一些实施例中，该k满足k＝N gap+n PSSCH，该n PSSCH为在该COT内接收该侧行数据信息的时域单元索引。
在一些实施例中，该反馈资源包括用于接收侧行反馈信息的第二反馈资源；该第二反馈资源包含于以下至少一个时域单元：
该COT内的最后一个时域单元；
该COT内的时域单元n，该n的值为根据侧行反馈的周期N PSFCH和该COT的起始时域单元确定的。
在一些实施例中，该n满足n＝n start,COT+N PSFCH·N+C，该N为大于0的整数，该C为大于或等于0的整数，该n start,COT为该COT的起始时域单元索引。
在一些实施例中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括侧行反馈信息；该第一信息指示该侧行信息所在的时域单元包括反馈资源或者该侧行信息中包括反馈信息时，该侧行信息为第一侧行信息。
在一些实施例中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第二信息用于指示以下之一：
该侧行信息所在的时域单元不包括反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈 信息的第一反馈资源，该侧行信息为第一侧行信息；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源，该侧行信息为第一侧行信息。
在一些实施例中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
在一些实施例中，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源相对于承载该侧行信息的时域单元的偏移值。
在一些实施例中，该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源的偏移值；或，该下一个用于接收该侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔，该第三信息包括指示下一个用于接收该侧行反馈信息的第二反馈资源的偏移值的范围。
在一些实施例中，该侧行反馈信息为第二终端设备对该第一终端设备发送的第二侧行信息的反馈。
在一些实施例中，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息包括以下至少之一：
指示第三终端设备的标识ID的信息，该第三终端设备为接收该侧行反馈信息的目标终端；
指示混合自动重传请求HARQ进程ID的信息。
在一些实施例中，该侧行信息中的侧行反馈信息包括反馈指示信息，该反馈指示信息用于指示所反馈的侧行数据信息的资源位置。
在一些实施例中，该反馈指示信息包括以下至少之一：
指示该侧行数据信息和该侧行反馈信息之间的时域单元间隔信息；
指示该侧行数据信息的频域信息。
在一些实施例中，该侧行数据信息的频域信息包括该侧行数据的资源块PRB索引或该侧行数据的PRB与资源池边缘的PRB的差值。
在一些实施例中，该侧行信息中的侧行反馈信息为对第一时频范围内接收的至少一个侧行信息的反馈，该至少一个侧行信息为该第一终端设备接收的来自至少一个第三终端设备的侧行信息。
在一些实施例中，该侧行反馈信息包括反馈指示信息，该反馈指示信息包括该至少一个侧行信息的时频位置的索引。
在一些实施例中，该M个侧行信息和该N个侧行信息中的任一侧行信息包括侧行控制信息，该侧行控制信息中的第四信息用于确定承载该侧行信息的资源在该COT中的位置。
在一些实施例中，该第四信息包括以下至少之一：
该COT的时域长度，该COT的时域长度包括该COT的时域单元数量L；
承载该侧行信息的时域单元在COT内的时域单元索引；
该COT的剩余时域长度，该剩余时域长度包括该COT的剩余时域单元数量；
该侧行信息传输的索引。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
可选地，该通信装置300可对应于上文方法实施例中的第二终端设备，例如，可以为第二终端设备，或者配置于第二终端设备中的部件(如，芯片或芯片系统等)。
应理解，该通信装置300可对应于根据本申请方法实施例中的第二终端设备，该通信装置300可以包括用于执行上述方法实施例中第二终端设备执行的方法的单元。并且，该通信装置300中的各单元和上述其他操作和/或功能分别为了实现上述方法实施例的相应流程。
其中，当该通信装置300用于执行上述实施例中的方法时，收发单元310可用于接收第一终端设备在COT内发送的侧行信息，该COT包括L个时域单元，L为大于1的整数；处理单元320可用于根据该侧行信息确定反馈资源，该反馈资源用于接收或者发送侧行反馈信息。
在一些实施例中，该侧行信息包括侧行控制信息，该侧行控制信息用于指示该第二终端设备在该COT内接收或者发送侧行反馈信息的反馈资源。
在一些实施例中，该侧行控制信息中的第一信息用于指示该侧行信息所在的时域单元是否包括反馈资源或者该侧行信息中是否包括反馈信息；或者，该侧行控制信息中的第二信息用于指示以下之一：
该侧行信息所在的时域单元不包括反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于发送侧行反馈信息的第一反馈资源；
该侧行信息所在的时域单元包括反馈资源，且该反馈资源包括用于接收侧行反馈信息的第二反馈资源。
在一些实施例中，该侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
在一些实施例中，该收发单元310还用于：
在该第一反馈资源接收该第一终端设备发送的侧行反馈信息；和/或，
在该第二反馈资源向该第一终端设备发送侧行反馈信息。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
当该通信装置300为终端设备(如第一终端设备或第二终端设备)时，该通信装置300中的收发单元310可以通过收发器实现，例如可对应于图10中所示的通信装置400中的收发器420、或图11中示出的终端设备500中的收发器520，该通信装置300中的处理单元320可通过至少一个处理器实现，例如可对应于图10中示出的通信装置400中的处理器410、或图11中示出的终端设备500中的处理器510。
当该通信装置300为配置于通信设备(如第一终端设备或第二终端设备)中的芯片或芯片系统时，该通信装置300中的收发单元310可以通过输入/输出接口、电路等实现，该通信装置300中的处理单元320可以通过该芯片或芯片系统上集成的处理器、微处理器或集成电路等实现。
图10是本申请实施例提供的通信装置的另一示意性框图。如图10所示，该通信装置400可以包括：处理器410、收发器420和存储器430。其中，处理器410、收发器420和存储器430通过内部连接通路互相通信，该存储器430用于存储指令，该处理器410用于执行该存储器430存储的指令，以控制该收发器420发送信号和/或接收信号。
应理解，该通信装置400可以对应于上述方法实施例中的第一终端设备或第二终端设备，并且可以用于执行上述方法实施例中第一终端设备或第二终端设备执行的各个步骤和/或流程。可选地，该存储器430可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。存储器430可以是一个单独的器件，也可以集成在处理器410中。该处理器410可以用于执行存储器430中存储的指令，并且当该处理器410执行存储器中存储的指令时，该处理器410用于执行上述与第一终端设备或第二终端设备对应的方法实施例的各个步骤和/或流程。
可选地，该通信装置400是前文实施例中的第一终端设备。
可选地，该通信装置400是前文实施例中的第二终端设备。
其中，收发器420可以包括发射机和接收机。收发器420还可以进一步包括天线，天线的数量可以为一个或多个。该处理器410和存储器430与收发器420可以是集成在不同芯片上的器件。如，处理器410和存储器430可以集成在基带芯片中，收发器420可以集成在射频芯片中。该处理器410和存储器430与收发器420也可以是集成在同一个芯片上的器件。本申请对此不作限定。
可选地，该通信装置400是配置在第一终端设备中的部件，如芯片、芯片系统等。
可选地，该通信装置400是配置在第二终端设备中的部件，如芯片、芯片系统等。
其中，收发器420也可以是通信接口，如输入/输出接口、电路等。该收发器420与处理器410和存储器430都可以集成在同一个芯片中，如集成在基带芯片中。
图11是本申请实施例提供的终端设备的结构示意图。该终端设备可应用于如图1所示的系统中。如图11所示，该终端设备500包括处理器510和收发器520。可选地，该终端设备500还包括存储器530。其中，处理器510、收发器520和存储器530之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器530用于存储计算机程序，该处理器510用于从该存储器530中调用并运行该计算机程序，以控制该收发器520收发信号。可选地，终端设备500还可以包括天线540，用于将收发器520输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器510可以和存储器530可以合成一个处理装置，处理器510用于执行存储器530中存储的程序代码来实现上述功能。具体实现时，该存储器530也可以集成在处理器510中，或者独立于处理器510。该处理器510可以与图9中的处理单元320或图10中的处理器410对应。
上述收发器520可以与图9中的收发单元310或图10中的收发器420对应。收发器520可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
可选地，上述终端设备500还可以包括电源550，用于给终端设备500中的各种 器件或电路提供电源。
除此之外，为了使得该终端设备的功能更加完善，该终端设备500还可以包括输入单元560、显示单元570、音频电路580、摄像头590和传感器600等中的一个或多个，所述音频电路还可以包括扬声器580a、麦克风580b等。
应理解，图11所示的终端设备500能够实现上述方法实施例中涉及第二终端设备的各个过程，或，上述方法实施例中涉及第二终端设备的各个过程。终端设备500中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
当终端设备500用于执行上文方法实施例中涉及终端设备的操作流程时，处理器510可以用于执行前面方法实施例中描述的由第一终端设备或第二终端设备内部实现的动作。
本申请还提供了一种处理装置，包括至少一个处理器，所述至少一个处理器用于执行存储器中存储的计算机程序，以使得所述处理装置执行上述方法实施例中第一终端设备执行的方法或第二终端设备执行的方法。
本申请实施例还提供了一种处理装置，包括处理器和输入输出接口。所述输入输出接口与所述处理器耦合。所述输入输出接口用于输入和/或输出信息。所述信息包括指令和数据中的至少一项。所述处理器用于执行计算机程序，以使得所述处理装置执行上述方法实施例中第一终端设备执行的方法或第二终端设备执行的方法。
本申请实施例还提供了一种处理装置，包括处理器和存储器。所述存储器用于存储计算机程序，所述处理器用于从所述存储器调用并运行所述计算机程序，以使得所述处理装置执行上述方法实施例中第一终端设备执行的方法或第二终端设备执行的方法。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法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。
根据本申请实施例提供的方法，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方法实施例中第一终端设备或第二终端设备执行的方法。
根据本申请实施例提供的方法，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方法实施例中第一终端设备或第二终端设备执行的方法。
根据本申请实施例提供的方法，本申请还提供一种通信系统，该通信系统可以包括前述的第一终端设备和第二终端设备。
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2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示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功 能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，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。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上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、ROM、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 (58)

  1. 一种通信方法，其特征在于，包括：
    第一终端设备在信道占用时间COT内发送M个侧行信息和接收N个侧行信息，所述COT包括L个时域单元，M和N为大于或者等于0的整数且M和N不同时为0，L为大于1的整数。
  2. 根据权利要求1所述的方法，其特征在于，所述M个侧行信息和所述N个侧行信息中包括至少一个第一侧行信息，所述第一侧行信息包括侧行反馈信息，承载所述侧行反馈信息的反馈资源为网络设备配置的或者任一侧行信息中的侧行控制信息指示的或者预配置的。
  3. 根据权利要求2所述的方法，其特征在于，所述反馈资源的时域位置与所述COT的时域长度相关。
  4. 根据权利要求2或3所述的方法，其特征在于，所述反馈资源包括用于发送侧行反馈信息的第一反馈资源，所述第一反馈资源包含于以下至少一个时域单元：
    所述COT内的第一个时域单元；
    所述COT内的时域单元m，所述m的值为根据侧行反馈的最小时间间隔N gap和所述COT的起始时域单元确定的；
    所述COT内的时域单元k，所述k的值为根据侧行反馈的最小时间间隔N gap和所述侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
  5. 根据权利要求4所述的方法，其特征在于，所述m满足m＝N gap+n start,COT-1，所述n start,COT为所述COT的起始时域单元索引。
  6. 根据权利要求4所述的方法，其特征在于，所述k满足k＝N gap+n PSSCH，所述n PSSCH为在所述COT内接收所述侧行数据信息的时域单元索引。
  7. 根据权利要求2至6任一项所述的方法，其特征在于，所述反馈资源包括用于接收侧行反馈信息的第二反馈资源；所述第二反馈资源包含于以下至少一个时域单元：
    所述COT内的最后一个时域单元；
    所述COT内的时域单元n，所述n的值为根据侧行反馈的周期N PSFCH和所述COT的起始时域单元确定的。
  8. 根据权利要求7所述的方法，其特征在于，所述n满足n＝n start,COT+N PSFCH·N+C，所述N为大于0的整数，所述C为大于或等于0的整数，所述n start,COT为所述COT的起始时域单元索引。
  9. 根据权利要求1至8任一项所述的方法，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第一信息用于指示所述侧行信息所在的时域单元是否包括反馈资源或者所述侧行信息中是否包括侧行反馈信息；
    所述第一信息指示所述侧行信息所在的时域单元包括反馈资源或者所述侧行信息中包括反馈信息时，所述侧行信息为第一侧行信息。
  10. 根据权利要求1至8任一项所述的方法，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第二 信息用于指示以下之一：
    所述侧行信息所在的时域单元不包括反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于发送侧行反馈信息的第一反馈资源，所述侧行信息为第一侧行信息；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于接收侧行反馈信息的第二反馈资源，所述侧行信息为第一侧行信息。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
  12. 根据权利要求11所述的方法，其特征在于，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源相对于承载所述侧行信息的时域单元的偏移值。
  13. 根据权利要求11所述的方法，其特征在于，
    所述下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值；或，
    所述下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值的范围。
  14. 根据权利要求11至13任一项所述的方法，其特征在于，所述侧行反馈信息为第二终端设备对所述第一终端设备发送的第二侧行信息的反馈。
  15. 根据权利要求2至13任一项所述的方法，其特征在于，所述侧行信息中的侧行反馈信息包括反馈指示信息，所述反馈指示信息包括以下至少之一：
    指示第三终端设备的标识ID的信息，所述第三终端设备为接收所述侧行反馈信息的目标终端；
    指示混合自动重传请求HARQ进程ID的信息。
  16. 根据权利要求2至13任一项所述的方法，其特征在于，所述侧行信息中的侧行反馈信息包括反馈指示信息，所述反馈指示信息用于指示所反馈的侧行数据信息的资源位置。
  17. 根据权利要求16所述的方法，其特征在于，所述反馈指示信息包括以下至少之一：
    指示所述侧行数据信息和所述侧行反馈信息之间的时域单元间隔信息；
    指示所述侧行数据信息的频域信息。
  18. 根据权利要求17所述的方法，其特征在于，所述侧行数据信息的频域信息包括所述侧行数据的资源块PRB索引或所述侧行数据的PRB与资源池边缘的PRB的差值。
  19. 根据权利要求2至13任一项所述的方法，其特征在于，所述侧行信息中的侧行反馈信息为对第一时频范围内接收的至少一个侧行信息的反馈，所述至少一个侧行信息为所述第一终端设备接收的来自至少一个第三终端设备的侧行信息。
  20. 根据权利要求19所述的方法，其特征在于，所述侧行反馈信息包括反馈指示信息，所述反馈指示信息包括所述至少一个侧行信息的时频位置的索引。
  21. 根据权利要求1至20任一项所述的方法，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第四信息用于确定承载所述侧行信息的资源在所述COT中的位置。
  22. 根据权利要求21所述的方法，其特征在于，所述第四信息包括以下至少之一：
    所述COT的时域长度，所述COT的时域长度包括所述COT的时域单元数量L；
    承载所述侧行信息的时域单元在COT内的时域单元索引；
    所述COT的剩余时域长度，所述剩余时域长度包括所述COT的剩余时域单元数量；
    所述侧行信息传输的索引。
  23. 一种通信方法，其特征在于，包括：
    第二终端设备接收第一终端设备在COT内发送的侧行信息，所述COT包括L个时域单元，L为大于1的整数；
    所述第二终端设备根据所述侧行信息，确定反馈资源，所述反馈资源用于接收或者发送侧行反馈信息。
  24. 根据权利要求23所述的方法，其特征在于，所述侧行信息包括侧行控制信息，所述侧行控制信息用于指示所述第二终端设备在所述COT内接收或者发送侧行反馈信息的反馈资源。
  25. 根据权利要求24所述的方法，其特征在于，所述侧行控制信息中的第一信息用于指示所述侧行信息所在的时域单元是否包括反馈资源或者所述侧行信息中是否包括反馈信息；或者，
    所述侧行控制信息中的第二信息用于指示以下之一：
    所述侧行信息所在的时域单元不包括反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于发送侧行反馈信息的第一反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于接收侧行反馈信息的第二反馈资源。
  26. 根据权利要求24或25所述的方法，其特征在于，所述侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
  27. 根据权利要求24至26任一项所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备在第一反馈资源接收所述第一终端设备发送的侧行反馈信息；和/或，
    所述第二终端设备在第二反馈资源向所述第一终端设备发送侧行反馈信息。
  28. 一种通信装置，其特征在于，包括：
    处理单元，用于确定M个侧行信息和N个侧行信息，M和N为大于或者等于0的整数且M和N不同时为0；
    收发单元，用于在COT内发送M个侧行信息和接收N个侧行信息，所述COT包括L个时域单元，L为大于1的整数。
  29. 根据权利要求28所述的装置，其特征在于，所述M个侧行信息和所述N个侧行信息中包括至少一个第一侧行信息，所述第一侧行信息包括侧行反馈信息，承载所述侧行反馈信息的反馈资源为网络设备配置的或者任一侧行信息中的侧行控制信息指示的或者预配置的。
  30. 根据权利要求29所述的装置，其特征在于，所述反馈资源的时域位置与所述COT的时域长度相关。
  31. 根据权利要求29或30所述的装置，其特征在于，所述反馈资源包括用于发送侧行反馈信息的第一反馈资源，所述第一反馈资源包含于以下至少一个时域单元：
    所述COT内的第一个时域单元；
    所述COT内的时域单元m，所述m的值为根据侧行反馈的最小时间间隔N gap和所述COT的起始时域单元确定的；
    所述COT内的时域单元k，所述k的值为根据侧行反馈的最小时间间隔N gap和所述侧行反馈信息所响应的侧行数据信息在COT的接收位置确定的。
  32. 根据权利要求31所述的装置，其特征在于，所述m满足m＝N gap+n start,COT-1，所述n start,COT为所述COT的起始时域单元索引。
  33. 根据权利要求31所述的装置，其特征在于，所述k满足k＝N gap+n PSSCH，所述n PSSCH为在所述COT内接收所述侧行数据信息的时域单元索引。
  34. 根据权利要求29至33任一项所述的装置，其特征在于，所述反馈资源包括用于接收侧行反馈信息的第二反馈资源；所述第二反馈资源包含于以下至少一个时域单元：
    所述COT内的最后一个时域单元；
    所述COT内的时域单元n，所述n的值为根据侧行反馈的周期N PSFCH和所述COT的起始时域单元确定的。
  35. 根据权利要求34所述的装置，其特征在于，所述n满足n＝n start,COT+N PSFCH·N+C，所述N为大于0的整数，所述C为大于或等于0的整数，所述n start,COT为所述COT的起始时域单元索引。
  36. 根据权利要求28至35任一项所述的装置，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第一信息用于指示所述侧行信息所在的时域单元是否包括反馈资源或者所述侧行信息中是否包括侧行反馈信息；
    所述第一信息指示所述侧行信息所在的时域单元包括反馈资源或者所述侧行信息中包括反馈信息时，所述侧行信息为第一侧行信息。
  37. 根据权利要求28至35任一项所述的装置，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第二信息用于指示以下之一：
    所述侧行信息所在的时域单元不包括反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于发送侧行 反馈信息的第一反馈资源，所述侧行信息为第一侧行信息；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于接收侧行反馈信息的第二反馈资源，所述侧行信息为第一侧行信息。
  38. 根据权利要求28至37任一项所述的装置，其特征在于，所述M个侧行信息和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
  39. 根据权利要求38所述的装置，其特征在于，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源相对于承载所述侧行信息的时域单元的偏移值。
  40. 根据权利要求38所述的装置，其特征在于，
    所述下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值小于或等于反馈约束的最小时间间隔，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值；或，
    所述下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值大于反馈约束的最小时间间隔，所述第三信息包括指示下一个用于接收所述侧行反馈信息的第二反馈资源的偏移值的范围。
  41. 根据权利要求38至40任一项所述的装置，其特征在于，所述侧行反馈信息为对第二侧行信息的反馈。
  42. 根据权利要求29至40任一项所述的装置，其特征在于，所述侧行信息中的侧行反馈信息包括反馈指示信息，所述反馈指示信息包括以下至少之一：
    指示第三终端设备的标识ID的信息，所述第三终端设备为接收所述侧行反馈信息的目标终端；
    指示混合自动重传请求HARQ进程ID的信息。
  43. 根据权利要求29至40任一项所述的装置，其特征在于，所述侧行信息中的侧行反馈信息包括反馈指示信息，所述反馈指示信息用于指示所反馈的侧行数据信息的资源位置。
  44. 根据权利要求43所述的装置，其特征在于，所述反馈指示信息包括以下至少之一：
    指示所述侧行数据信息和所述侧行反馈信息之间的时域单元间隔信息；
    指示所述侧行数据信息的频域信息。
  45. 根据权利要求44所述的装置，其特征在于，所述侧行数据信息的频域信息包括所述侧行数据的资源块PRB索引或所述侧行数据的PRB与资源池边缘的PRB的差值。
  46. 根据权利要求29至40任一项所述的装置，其特征在于，所述侧行信息中的侧行反馈信息为对第一时频范围内接收的至少一个侧行信息的反馈，所述至少一个侧行信息为接收的来自至少一个第三终端设备的侧行信息。
  47. 根据权利要求46所述的装置，其特征在于，所述侧行反馈信息包括反馈指示信息，所述反馈指示信息包括所述至少一个侧行信息的时频位置的索引。
  48. 根据权利要求28至47任一项所述的装置，其特征在于，所述M个侧行信息 和所述N个侧行信息中的任一侧行信息包括侧行控制信息，所述侧行控制信息中的第四信息用于确定承载所述侧行信息的资源在所述COT中的位置。
  49. 根据权利要求48所述的装置，其特征在于，所述第四信息包括以下至少之一：
    所述COT的时域长度，所述COT的时域长度包括所述COT的时域单元数量L；
    承载所述侧行信息的时域单元在COT内的时域单元索引；
    所述COT的剩余时域长度，所述剩余时域长度包括所述COT的剩余时域单元数量；
    所述侧行信息传输的索引。
  50. 一种通信装置，其特征在于，包括：
    收发单元，用于接收第一终端设备在COT内发送的侧行信息，所述COT包括L个时域单元，L为大于1的整数；
    处理单元，用于根据所述侧行信息确定反馈资源，所述反馈资源用于接收或者发送侧行反馈信息。
  51. 根据权利要求50所述的装置，其特征在于，所述侧行信息包括侧行控制信息，所述侧行控制信息用于指示在所述COT内接收或者发送侧行反馈信息的反馈资源。
  52. 根据权利要求51所述的装置，其特征在于，所述侧行控制信息中的第一信息用于指示所述侧行信息所在的时域单元是否包括反馈资源或者所述侧行信息中是否包括反馈信息；或者，
    所述侧行控制信息中的第二信息用于指示以下之一：
    所述侧行信息所在的时域单元不包括反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于发送侧行反馈信息的第一反馈资源；
    所述侧行信息所在的时域单元包括反馈资源，且所述反馈资源包括用于接收侧行反馈信息的第二反馈资源。
  53. 根据权利要求51或52所述的装置，其特征在于，所述侧行控制信息中的第三信息用于指示下一个用于接收侧行反馈信息的第二反馈资源的位置。
  54. 根据权利要求51至53任一项所述的装置，其特征在于，所述收发单元具体用于：
    在第一反馈资源接收所述第一终端设备发送的侧行反馈信息；和/或，
    在第二反馈资源向所述第一终端设备发送侧行反馈信息。
  55. 一种通信设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至27中任一项所述的方法。
  56. 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指令，使得安装有所述芯片的设备执行如权利要求1至27中任一项所述的方法。
  57. 一种计算机可读存储介质，其特征在于，用于存储计算机程序指令，所述计算机程序使得计算机执行如权利要求1至27中任一项所述的方法。
  58. 一种计算机程序产品，其特征在于，包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至27中任一项所述的方法。
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