WO2024061072A1 - 通信方法和装置 - Google Patents

通信方法和装置 Download PDF

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Publication number
WO2024061072A1
WO2024061072A1 PCT/CN2023/118502 CN2023118502W WO2024061072A1 WO 2024061072 A1 WO2024061072 A1 WO 2024061072A1 CN 2023118502 W CN2023118502 W CN 2023118502W WO 2024061072 A1 WO2024061072 A1 WO 2024061072A1
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Prior art keywords
resource
symbol
time unit
time
terminal device
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PCT/CN2023/118502
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English (en)
French (fr)
Inventor
王碧钗
李雪茹
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华为技术有限公司
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Publication of WO2024061072A1 publication Critical patent/WO2024061072A1/zh

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Classifications

    • 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
    • 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
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • the present application relates to the field of communication, and more specifically, to a communication method and device.
  • sidelink (SL) communication can support direct communication between terminal devices, that is, user data is transmitted directly between terminal devices, which avoids the need for user data to be transferred through the network in cellular communications, which can reduce transmission costs. delay and alleviate network load.
  • the time slot is the smallest time domain resource scheduling granularity.
  • Each time slot contains 14 symbols and at least 1 Automatic gain control (automatic gain control, AGC) symbol and 1 guard period (GP) symbol.
  • AGC Automatic gain control
  • GP guard period
  • the current configuration of AGC symbols and GP symbols may cause excessive system overhead, cause unnecessary waste of spectrum resources, or reduce system transmission performance.
  • This application provides a communication method and device that can reduce system overhead, ensure flexibility of symbol configuration, and improve system transmission performance.
  • a communication method is provided, which method can be performed by a first terminal device (for example, a sending user equipment (UE1)), or can also be performed by a chip or circuit for the first terminal device.
  • a first terminal device for example, a sending user equipment (UE1)
  • UE1 sending user equipment
  • this application does not limit this.
  • the following description takes execution by the first terminal device as an example.
  • the method includes: the first terminal device obtains first information, and the first information is used to indicate the AGC processing capability of the second terminal device; the first terminal device determines the first resource according to the first information; the first terminal device determines the first resource on the first resource. Send sidelink information to the second terminal device.
  • the first terminal device can determine the AGC processing time of the second terminal device based on the AGC processing capability of the second terminal device, and then can set reasonable AGC resources and determine the first time for transmitting sideline information. resource.
  • this solution can reduce system overhead, avoid unnecessary waste of spectrum resources, improve system transmission performance, etc., while maintaining Compatibility with low-capacity second terminal equipment; for second terminal equipment with long AGC processing time (low-capacity), a relatively flexible symbol configuration structure can be provided to meet different transmission requirements.
  • the first terminal device obtains the first information, including: the first terminal device receives the first information from the second terminal device.
  • the first terminal device sends first indication information to the second terminal device, and the first indication information is used to instruct the second terminal device to perform AGC on the second resource.
  • the second resource is determined based on the first information; or the first indication information is used to indicate the first resource.
  • the first terminal device indicates the first resource or the second resource to the second terminal device, which is helpful for the second terminal device to quickly and effectively determine the resources occupied by the sidelink information, and then detect and obtain the sidelink information, improving Transmission performance.
  • the first indication information is carried in a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH). )middle.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit are preconfigured, or in each time unit,
  • the position of the time domain resource and/or frequency domain resource for mapping the PSCCH is configured by the network device; wherein, the starting position of the time domain resource of the PSCCH is located at the third symbol of the time unit where the PSCCH is located.
  • the time unit where the PSCCH is located may be the first time unit, or may be located before the first time unit.
  • the second terminal device may decode and obtain the PSSCH in a timely manner, thereby improving transmission efficiency.
  • the first information includes a first value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and is used for the first time unit.
  • the time domain resource of the second resource of the two terminal devices performing AGC is located in the second part of the first symbol in the first time unit; or the first information includes a second value, the starting position of the time domain resource of the first resource.
  • the third symbol located in the first time unit, the time domain resource of the second resource is located in the second part of the first symbol in the first time unit, and the second symbol in the first time unit; where, the One symbol precedes the second symbol in the time domain, and the second symbol precedes the third symbol in the time domain.
  • different time unit structures are designed according to different AGC processing capabilities of the second terminal device.
  • For second terminal equipment with high processing power it can reduce the resources occupied by AGC, increase the resources available for data transmission, and improve resource utilization; for second terminal equipment with low processing power, it can improve the flexibility of symbol configuration. .
  • the first symbol of the first time unit includes a first part and a second part, the first part of the first symbol is empty, and the first part of the first symbol is located before the second part of the first symbol in the time domain.
  • the first terminal device receives first feedback information from the second terminal device on a third resource, and the first feedback information is carried on a physical sidelink feedback channel (physical sidelink feedback channel).
  • sidelink feedback channel PSFCH
  • the third resource is determined based on the second information
  • the second information is used to indicate the AGC processing capability of the first terminal device.
  • the second information includes the first value, the time domain resource of the third resource is located at the penultimate symbol of the second time unit, and at the end of the second time unit One symbol, the time domain resource of the fourth resource is located in the second part of the third to last symbol in the second time unit; or the second information includes the second value, and the time domain resource of the third resource is located in the second time unit.
  • the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the second time unit, and the penultimate symbol of the second time unit, the fourth resource is used by the first terminal device to perform AGC ;
  • the third to last symbol of the second time unit includes the first part and the second part, the first part of the third to last symbol is empty, the second time unit is the same as the first time unit, or the second time unit is in Located after the first time unit in the time domain.
  • duration of the first part in each symbol may be the same or different.
  • duration of the second part in each symbol may be the same or different, and this application does not specifically limit this.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit are preconfigured, or in each time unit,
  • the position of the time domain resource and/or frequency domain resource for mapping the PSCCH is configured by the network device; wherein, the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the time unit where the PSCCH is located.
  • the first information includes a first value, the starting position of the time domain resource of the first resource is located at the second part of the first symbol in the first time unit, and the time domain resource of the second resource used for AGC of the second terminal device is located at the first part of the first symbol in the first time unit; or, the first information includes a second value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and the time domain resource of the second resource is located at the first symbol in the first time unit; wherein the first symbol is located before the second symbol in the time domain, and the first part of the first symbol is located before the second part of the first symbol in the time domain.
  • the end position of the time domain resource of the first resource is located in the first part of the last symbol in the third time unit; wherein the last symbol of the third time unit includes a first part and a second part, the second part of the last symbol is empty, and the third time unit is the same as the first time unit; or, the third time unit is located after the first time unit in the time domain.
  • the first terminal device receives first feedback information from the second terminal device on a third resource, the first feedback information is carried in the PSFCH, and the third resource is Determined according to the second information, the second information is used to indicate the AGC processing capability of the first terminal device.
  • the end position of the time domain resource of the first resource is located in the first part of the fourth to last symbol in the third time unit; wherein, the reciprocal of the third time unit
  • the fourth symbol includes the first part and the second part, the second part of the fourth to last symbol is empty, and the third time unit is the same as the first time unit; or, the third time unit is located in the first time unit in the time domain after.
  • the time domain resource of the third resource is located at the penultimate symbol of the fourth time unit, and the time domain resource of the fourth resource is located at the penultimate symbol of the fourth time unit.
  • the fourth resource is used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit is an empty symbol, the fourth time unit is the same as the third time unit, or the fourth time unit is in the time domain is located after the third time unit.
  • the second information includes the first value, and the time domain resource of the third resource is located in the second part, the fourth part of the penultimate symbol of the fourth time unit.
  • the second to last symbol of the time unit, and the first part of the last symbol of the fourth time unit, the time domain resource of the fourth resource is located in the first part of the third to last symbol of the fourth time unit;
  • the second information includes The second value, the time domain resource of the third resource is located in the penultimate symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the penultimate symbol of the fourth time unit
  • the third symbol and the fourth resource are used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit includes the first part and the second part, the second part of the last symbol is empty, and the fourth time unit is with The third time unit is the same, or the fourth time unit is located after the third time unit in the
  • the end position of the time domain resource of the first resource is located at the fourth to last symbol in the third time unit; wherein the third time unit and the first time unit The same; alternatively, the third time unit is located after the first time unit in the time domain.
  • the second information includes a first value, the time domain resource of the third resource is located at the second to last symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, the time domain resource of the fourth resource is located at the second part of the third to last symbol of the fourth time unit, and the fourth resource is used for AGC by the first terminal device; or, the second information includes a second value, the time domain resource of the third resource is located at the second part of the second to last symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, the time domain resource of the fourth resource is located at the second part of the third to last symbol of the fourth time unit, and the first part of the second to last symbol of the fourth time unit; wherein the third to last symbol of the fourth time unit includes the second part and the first part, and the last symbol of the fourth time unit includes the first part and the second part, the first part of the third to last symbol of the fourth time unit, and the second part of the
  • the first terminal device receives second feedback information from the second terminal device on the fifth resource, and the second feedback information is used to feed back the reception status of the sidelink information.
  • the fifth resource is located in the first sub-time unit and the second sub-time unit on the fourth time unit, and the frequency domain position of the fifth resource on the first sub-time unit is consistent with the fifth resource on the second sub-time unit. The frequency domain positions on are different.
  • the first sub-time unit and the second sub-time unit of the fourth time unit are used to feedback the reception status of data sent in L time units before the fourth time unit;
  • the frequency domain position of the fifth resource on the first sub-time unit satisfies: [(i+j ⁇ L) ⁇ M set ,(i+1+j ⁇ L) ⁇ M set -1];
  • the frequency domain position of the fifth resource in the second sub-time unit satisfies: [(i+j ⁇ L+Q)mod(N ⁇ L) ⁇ M set ,(i+1+j ⁇ L+Q)mod(N ⁇ L)) ⁇ M set -1];
  • M set is the number of sub-frequency domain units in the sub-frequency domain unit set where the frequency domain position of the fifth resource on the first sub-time unit or the second sub-time unit is located, and N is the number of sub-frequency domain units in the L time units.
  • the number of frequency domain units on each time unit i is the index of the time unit where the sidelink information is located in L time units
  • Q is the index of the fifth resource on the first sub-time unit and the second sub-time unit
  • the cyclic shift offset of the sub-frequency domain unit set where the frequency domain position is located Q is an integer greater than 0 and less than N ⁇ L
  • j is the index of the frequency domain unit where the sidelink information is located among the N frequency domain units
  • i is an integer greater than or equal to zero and less than or equal to L-1
  • j is an integer greater than or equal to zero and less than or equal to N-1
  • L and N are positive integers.
  • the second terminal device can frequency-hop to transmit the second feedback information, thereby improving the hybrid automatic repeat request (hybrid automatic repeat request) automatic repeat request, HARQ) feedback reliability.
  • a communication method is provided.
  • the method can be executed by a second terminal device (for example, receiving UE2), or can also be executed by a chip or circuit for the second terminal device.
  • This application does not limit this. .
  • the following description takes execution by the second terminal device as an example.
  • the method includes: the second terminal device sends first information to the first terminal device, the first information is used to indicate the AGC processing capability of the second terminal device; the second terminal device receives the side information from the first terminal device on the first resource. row information, and the first resource is determined based on the first information.
  • the second terminal device sends the first information to the first terminal device, so that the first terminal device can determine the AGC processing time of the second terminal device based on the AGC processing capability of the second terminal device, and then can set Reasonable AGC resources determine the first resource used to transmit sidelink information.
  • this solution can reduce system overhead, avoid unnecessary waste of spectrum resources, improve system transmission performance, etc., while maintaining Compatibility with low-capacity second terminal equipment; for second terminal equipment with long AGC processing time (low-capacity), a relatively flexible symbol configuration structure can be provided to meet different transmission requirements.
  • the second terminal device receives first indication information from the first terminal device, and the first indication information is used to instruct the second terminal device to perform AGC on the second resource,
  • the second resource is determined based on the first information; or the first indication information is used to indicate the first resource.
  • the first terminal device indicates the first resource or the second resource to the second terminal device, which is helpful for the second terminal device to quickly and effectively determine the resources occupied by the sidelink information, and then detect and obtain the sidelink information, improving Transmission performance.
  • the first indication information is carried in the PSCCH, or PSSCH.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit are preconfigured, or in each time unit,
  • the position of the time domain resource and/or frequency domain resource for mapping the PSCCH is configured by the network device; wherein, the starting position of the time domain resource of the PSCCH is located at the third symbol of the time unit where the PSCCH is located.
  • the first information includes a first value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and is used for the first time unit.
  • the time domain resource of the second resource of the two terminal devices performing AGC is located in the second part of the first symbol in the first time unit; or the first information includes a second value, the starting position of the time domain resource of the first resource.
  • the third symbol located in the first time unit, the time domain resource of the second resource is located in the second part of the first symbol in the first time unit, and the second symbol in the first time unit; where, the One symbol precedes the second symbol in the time domain, and the second symbol precedes the third symbol in the time domain.
  • the first symbol of the first time unit includes a first part and a second part, the first part of the first symbol is empty, and the first part of the first symbol One part precedes the second part of the first symbol in the time domain.
  • the second terminal equipment sends the first feedback information to the first terminal equipment on a third resource
  • the first feedback information is carried in the PSFCH
  • the third resource is based on
  • the second information is determined by the second information, and the second information is used to indicate the AGC processing capability of the first terminal device.
  • the second information includes the first value, the time domain resource of the third resource is located at the penultimate symbol of the second time unit, and at the end of the second time unit One symbol, the time domain resource of the fourth resource is located in the second part of the third to last symbol in the second time unit; or the second information includes a second value, and the time domain resource of the third resource is located in the second time unit.
  • the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the second time unit, and the penultimate symbol of the second time unit, the fourth resource is used by the first terminal device to perform AGC ;
  • the third to last symbol of the second time unit includes the first part and the second part, the first part of the third to last symbol is empty, the second time unit is the same as the first time unit, or the second time unit is in Located after the first time unit in the time domain.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit are preconfigured, or in each time unit,
  • the position of the time domain resource and/or frequency domain resource for mapping the PSCCH is configured by the network device; wherein, the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the time unit where the PSCCH is located.
  • the first information includes a first value, and the starting position of the time domain resource of the first resource is located in the second part of the first symbol in the first time unit.
  • the time domain of the second resource used by the second terminal device to perform AGC The resource is located in the first part of the first symbol in the first time unit; alternatively, the first information includes a second value, and the starting position of the time domain resource of the first resource is located in the second symbol in the first time unit.
  • the time domain resource of the two resources is located in the first symbol in the first time unit; where the first symbol is located before the second symbol in the time domain, and the first part of the first symbol is located in the first time domain before the second part of the symbol.
  • the end position of the time domain resource of the first resource is located in the first part of the last symbol in the third time unit; wherein, the last symbol of the third time unit Including the first part and the second part, the second part of the last symbol is empty, the third time unit is the same as the first time unit; or, the third time unit is located after the first time unit in the time domain.
  • the second terminal equipment sends the first feedback information to the first terminal equipment on a third resource
  • the first feedback information is carried in the PSFCH
  • the third resource is based on
  • the second information is determined by the second information, and the second information is used to indicate the AGC processing capability of the first terminal device.
  • the end position of the time domain resource of the first resource is located in the first part of the penultimate fourth symbol in the third time unit; wherein, the penultimate of the third time unit
  • the fourth symbol includes the first part and the second part, the second part of the fourth to last symbol is empty, and the third time unit is the same as the first time unit; or, the third time unit is located in the first time unit in the time domain after.
  • the time domain resource of the third resource is located at the penultimate symbol of the fourth time unit, and the time domain resource of the fourth resource is located at the penultimate symbol of the fourth time unit.
  • the fourth resource is used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit is an empty symbol, the fourth time unit is the same as the third time unit, or the fourth time unit is in the time domain is located after the third time unit.
  • the second information includes the first value, and the time domain resource of the third resource is located in the second part and the fourth part of the penultimate symbol of the fourth time unit.
  • the second to last symbol of the time unit, and the first part of the last symbol of the fourth time unit, the time domain resource of the fourth resource is located in the first part of the third to last symbol of the fourth time unit;
  • the second information includes The second value, the time domain resource of the third resource is located in the penultimate symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the penultimate symbol of the fourth time unit
  • the third symbol and the fourth resource are used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit includes the first part and the second part, the second part of the last symbol is empty, and the fourth time unit is with The third time unit is the same, or the fourth time unit is located after the third time unit in the
  • the end position of the time domain resource of the first resource is located at the fourth to last symbol in the third time unit; wherein the third time unit and the first time unit The same; alternatively, the third time unit is located after the first time unit in the time domain.
  • the second information includes the first value, the time domain resource of the third resource is located at the penultimate symbol of the fourth time unit, and at the end of the fourth time unit The first part of a symbol, the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the fourth time unit, and the fourth resource is used for the first terminal device to perform AGC; or the second information includes the second value , the time domain resource of the third resource is located in the second part of the penultimate symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the fourth time unit.
  • the last symbol of the fourth time unit includes the first part and the second part, the first part of the penultimate symbol of the fourth time unit, and the second part of the last symbol of the fourth time unit is empty, the fourth time unit is empty with the third time
  • the units are the same, or the fourth time unit is located after the third time unit in the time domain.
  • the second terminal device sends second feedback information to the first terminal device on the fifth resource, and the second feedback information is used to feed back the reception of the sidelink information;
  • the fifth resource is located in the first sub-time unit and the second sub-time unit on the fourth time unit, and the frequency domain position of the fifth resource on the first sub-time unit is consistent with the fifth resource on the second sub-time unit.
  • the frequency domain positions are different.
  • the first sub-time unit and the second sub-time unit on the fourth time unit are used to feed back the data sent on L time units before the fourth time unit. reception of data,
  • the frequency domain position of the fifth resource on the first sub-time unit satisfies: [(i+j ⁇ L) ⁇ M set ,(i+1+j ⁇ L) ⁇ M set -1];
  • the frequency domain position of the fifth resource on the second sub-time unit satisfies: [(i+j ⁇ L+Q)mod(N ⁇ L) ⁇ M set ,(i+1+j ⁇ L+Q)mod(N ⁇ L)) ⁇ M set -1];
  • M set is the number of sub-frequency domain units in the sub-frequency domain unit set where the frequency domain position of the fifth resource in the first sub-time unit or the second sub-time unit is located
  • N is the number of frequency domain units in each time unit in the L time units
  • i is the index of the time unit where the side information is located in the L time units
  • j is the index of the frequency domain unit where the side information is located in the N frequency domain units
  • Q is the cyclic shift offset of the sub-frequency domain unit set where the frequency domain position of the fifth resource in the first sub-time unit and the second sub-time unit is located
  • Q is an integer greater than 0 and less than N ⁇ L
  • i is an integer greater than or equal to zero and less than or equal to L-1
  • j is an integer greater than or equal to zero and less than or equal to L-1
  • L and N are positive integers.
  • the second terminal device can frequency-hop to transmit the second feedback information, thereby improving the reliability of HARQ feedback.
  • a communication method is provided, which can be executed by a second terminal device, or can also be executed by a chip or circuit used in the second terminal device, which is not limited in this application.
  • the following description takes execution by the second terminal device as an example.
  • the method includes: the second terminal device sends first feedback information to the first terminal device on a third resource, the third resource is determined based on the second information, and the second information is used to indicate the AGC processing capability of the first terminal device.
  • the second information includes a first value, the time domain resources of the third resource are located at the second to last symbol of the second time unit, and the last symbol of the second time unit, and the time domain resources of the fourth resource are located at the second part of the third to last symbol in the second time unit; or, the second information includes a second value, the time domain resources of the third resource are located at the last symbol of the second time unit, the time domain resources of the fourth resource are located at the second part of the third to last symbol of the second time unit, and the second to last symbol of the second time unit, and the fourth resource is used for AGC by the first terminal device; wherein the third to last symbol of the second time unit includes a first part and a second part, the first part of the third to last symbol is empty, the second time unit is the same as the first time unit, or the second time unit is located after the first time unit in the time domain.
  • the end position of the time domain resource of the first resource is located in the first part of the penultimate fourth symbol in the third time unit; wherein, the penultimate of the third time unit
  • the fourth symbol includes the first part and the second part, the second part of the fourth to last symbol is empty, and the third time unit is the same as the first time unit; or, the third time unit is located in the first time unit in the time domain after.
  • the time domain resource of the third resource is located at the penultimate symbol of the fourth time unit, and the time domain resource of the fourth resource is located at the penultimate symbol of the fourth time unit.
  • the fourth resource is used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit is an empty symbol, the fourth time unit is the same as the third time unit, or the fourth time unit is in the time domain is located after the third time unit.
  • the second information includes the first value, and the time domain resource of the third resource is located in the second part and the fourth part of the penultimate symbol of the fourth time unit.
  • the second to last symbol of the time unit, and the first part of the last symbol of the fourth time unit, the time domain resource of the fourth resource is located in the first part of the third to last symbol of the fourth time unit;
  • the second information includes The second value, the time domain resource of the third resource is located in the penultimate symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the penultimate symbol of the fourth time unit
  • the third symbol and the fourth resource are used by the first terminal device to perform AGC; wherein, the last symbol of the fourth time unit includes the first part and the second part, the second part of the last symbol is empty, and the fourth time unit is with The third time unit is the same, or the fourth time unit is located after the third time unit in the
  • the end position of the time domain resource of the first resource is located at the fourth to last symbol in the third time unit; wherein the third time unit and the first time unit The same; alternatively, the third time unit is located after the first time unit in the time domain.
  • the second information includes the first value, the time domain resource of the third resource is located at the penultimate symbol of the fourth time unit, and at the end of the fourth time unit The first part of a symbol, the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the fourth time unit, and the fourth resource is used for the first terminal device to perform AGC; or the second information includes the second value , the time domain resource of the third resource is located in the second part of the penultimate symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the fourth time unit.
  • the second part is empty, and the fourth time unit is the same as the third time unit, or the fourth time unit is located after the third time unit in the time domain.
  • a communication device including: a processing unit, configured to obtain first information, the first information being used to indicate the AGC processing capability of the second terminal device; and a processing unit, further configured to determine, based on the first information, A first resource; a transceiver unit, configured to send sideline information to the second terminal device on the first resource.
  • the transceiver unit can perform the processing of receiving and sending in the aforementioned first aspect, and the processing unit can perform other processing in addition to receiving and transmitting in the aforementioned first aspect.
  • a communication device including: a processing unit, used to obtain first information, the first information being used to indicate the AGC processing capability of the second terminal device; and a transceiver unit, used to send the first terminal device to the first terminal device.
  • One information the first information is used to indicate the AGC processing capability of the second terminal device; the transceiver unit is also used to receive sideline information from the first terminal device on the first resource, the first resource is determined based on the first information .
  • the transceiver unit may perform the processing of receiving and transmitting in the aforementioned second aspect, and the processing unit may perform other processing in addition to receiving and transmitting in the aforementioned second aspect.
  • a communication device including: a processing unit, configured for a second terminal device to obtain second information, the second information being used to indicate the AGC processing capability of the first terminal device; and a processing unit, further configured to obtain the second information according to the first terminal device.
  • the second information determines the third resource; the transceiver unit is configured to send the first feedback information to the first terminal device on the third resource.
  • the transceiver unit can perform the reception and transmission processing in the aforementioned third aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned third aspect.
  • a communication device including a transceiver, a processor and a memory.
  • the processor is used to control the transceiver to send and receive signals.
  • the memory is used to store a computer program.
  • the processor is used to call and run the computer from the memory.
  • the program enables the communication device to execute the method in any one of the possible implementation manners of the above-mentioned first to third aspects.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the communication device further includes a transmitter (transmitter) and a receiver (receiver).
  • a communication system including a network device, a first terminal device and at least one second terminal device.
  • a computer-readable storage medium stores a computer program or code.
  • the computer program or code When the computer program or code is run on a computer, it causes the computer to execute the above-mentioned first aspect to A method in any possible implementation manner of the third aspect.
  • a chip including at least one processor, the at least one processor is coupled to 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 installation A device with the chip system performs the method in any of the possible implementations of the first to third aspects.
  • the chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • a computer program product includes: computer program code.
  • the device causes the device to execute any one of the above first to third aspects. A method among possible implementations.
  • FIGS 1 and 2 are schematic diagrams of wireless communication systems suitable for embodiments of the present application.
  • Figure 3 is a schematic diagram of the SL time slot structure.
  • Figure 4 is a schematic diagram of the SL micro-slot structure.
  • Figure 5 is a schematic flowchart of a communication method 500 provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of the SL time slot structure provided by the embodiment of the present application.
  • Figure 7 is a schematic diagram of the SL time slot structure for different AGC processing capabilities provided by the embodiment of the present application.
  • Figure 8 is a schematic diagram of the SL time slot structure without PSFCH resources provided by the embodiment of the present application.
  • Figure 9 is a schematic diagram of the SL time slot structure with PSFCH resources provided by the embodiment of the present application.
  • Figure 10 is a schematic diagram of the mapping relationship between PSFCH resources and PSSCH resources provided by the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application.
  • Figure 12 is a schematic structural diagram of a communication device 2000 provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a chip system 3000 provided by an embodiment of the present application.
  • the technical solutions provided by this application can be applied to various communication systems, such as: 5G or NR systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (time division duplex, TDD) system, etc.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • the technical solution provided by this application can also be applied to future communication systems, such as the sixth generation (6th generation, 6G) mobile communication system.
  • the technical solution provided by this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine type Communication (machine type communication, MTC), and Internet of Things (Internet of things, IoT) communication systems or other communication systems.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • M2M machine-to-machine
  • MTC machine type Communication
  • IoT
  • V2X communication may include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication ) communication, vehicle-to-network (V2N) communication.
  • V2V refers to communication between vehicles.
  • V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers, etc.).
  • V2I refers to the communication between vehicles and infrastructure, such as road side units (RSU) or network equipment. Among them, RSU includes two types: terminal type RSU.
  • V2N refers to the communication between vehicles and network devices. It can be understood that the above is an illustrative description, and the embodiments of the present application are not limiting.
  • V2X can also include V2X communications based on the NR system of the current 3GPP Rel-16 and subsequent versions.
  • the terminal equipment in the embodiment of this application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communications equipment, user agent or user device.
  • UE user equipment
  • the terminal device may be a device that provides voice/data to users, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc.
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocols , SIP) telephone, wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, which can Wearable devices, terminal devices in the 5G network or terminal devices in the future evolved public land mobile communication network (public land mobile network, PLMN), etc., are not limited in the embodiments of this application.
  • MID mobile internet devices
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • 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 just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
  • the device for realizing the function of the terminal device may be a terminal device, or a device that can support the terminal device to realize the function, such as a chip system or a chip, and the device may be installed on in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device in the embodiment of the present application may be a device used to communicate with a terminal device.
  • the network device may also be called an access network device.
  • equipment or wireless access network equipment, such as network equipment can be a base station.
  • the network device in the embodiment of this application may refer to a radio access network (radio access network, RAN) node (or device) that connects the terminal device to the wireless network.
  • radio access network radio access network, RAN node (or device) that connects the terminal device to the wireless network.
  • a base station can broadly cover various names as follows, or be replaced with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (TP), primary station, secondary station, multi-standard wireless (motor slide retainer, MSR) node, home base station, network controller, access point Ingress node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (active antenna) unit, AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc.
  • NodeB Node B
  • eNB evolved base station
  • next generation NodeB next generation NodeB, gNB
  • relay station Access point
  • transmission point transmitting and
  • the base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.
  • a base station may also refer to a communication module, modem or chip used in the aforementioned equipment or devices.
  • the base station can also be a mobile switching center and equipment that performs base station functions in D2D, V2X, and M2M communications, network-side equipment in 6G networks, equipment that performs base station functions in future communication systems, etc.
  • Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.
  • Base stations can be fixed or mobile.
  • a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move based on the mobile base station's location.
  • a helicopter or drone may be configured to serve as a device that communicates with another base station.
  • the network device mentioned in the embodiments of this application may be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU- CP)) and user plane CU nodes (central unit user plane (CU-UP)) and DU node equipment.
  • CU- CP central unit-control plane
  • CU-UP central unit user plane
  • the device used to implement the function of the network device may be a network device, or may be a device that can support the network device to implement the function, such as a chip system or a chip, and the device may be installed in the network device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • Network equipment and terminal equipment can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky. In the embodiments of this application, the scenarios in which network devices and terminal devices are located are not limited.
  • Figures 1 and 2 are schematic diagrams of a wireless communication system suitable for embodiments of the present application.
  • the wireless communication system may include at least one terminal device, such as UE1, UE2, UE3, UE4, and UE5 as shown in the figures.
  • the wireless communication system may also include at least one network device, such as the network device as shown in the figure.
  • the network device and the terminal device can communicate with each other. If the network device and the terminal device can communicate with each other through the Uu interface, the link for communication between the network device and the terminal device can be recorded as the Uu link. As shown in (a) of Figure 1 or (a) of Figure 2, the network device and UE1 can communicate directly, and as shown in (b) of Figure 1 or (b) of Figure 2, the network device and UE1 can also communicate through UE2; similarly, the network device and UE2 can communicate directly, and the network device and UE2 can also communicate through UE1. It can be understood that the Uu link represents a connection relationship between the terminal device and the network device, which is a logical concept, not a physical entity. The main link is only named for distinction, and its specific naming does not limit the scope of protection of this application.
  • terminal equipment can directly communicate with each other, as shown in Figure 1 (a) to Figure 1 (c), Figure 2 (a) to Figure 2 (c), and UE1 and UE2 can communicate Direct communication.
  • terminal devices can communicate with each other through other devices, such as network devices or terminal devices, as shown in (a) of Figure 1.
  • UE1 and UE2 can communicate with each other through network devices, as shown in Figure 1(a).
  • UE1 and UE2 can communicate through UE3.
  • the interface for communication between terminal equipment can be recorded as a proximity-based services communication 5 (PC5) interface, and the link for communication between terminal equipment can be recorded as a side link SL.
  • PC5 proximity-based services communication 5
  • the communication between terminal devices can also be recorded as SL communication.
  • Side links may also be called side links or secondary links. It can be understood that the side link represents a connection relationship between terminal equipment and is a logical concept rather than a physical entity. The side link is only named for differentiation, and its specific naming does not limit the scope of protection of this application.
  • Unicast communication can be carried out between devices, such as unicast communication between terminal devices.
  • Unicast means that a sending terminal and a receiving terminal form a unicast connection pair.
  • unicast communication can be performed between UE1 and UE2.
  • Multicast communication can be carried out between devices, such as multicast communication between terminal devices.
  • Multicast means that a sending terminal and at least one receiving terminal form a multicast connection pair.
  • UE1 and UE2, UE4 and UE5 can Multicast communication.
  • network equipment and UE1 can communicate directly, and one UE1 can perform multicast communication with multiple UEs, such as UE2, UE4, and UE5.
  • Multicast communication between UE1 and multiple UEs can be carried out under network coverage, as shown in Figure 2 (a) or Figure 2 (b), or it can also be carried out without network coverage, as shown in Figure 2 (c) or (d) of Figure 2.
  • FIG. 2 illustrates the example of UE1 performing multicast communication with three UEs, and this is not limited.
  • UE1 can perform multicast communication with a larger number of UEs.
  • SL communication between terminal devices can be used in the Internet of Vehicles or intelligent transportation systems (ITS), such as the V2X communication mentioned above.
  • ITS intelligent transportation systems
  • the SL communication between the terminal device and the terminal device can be carried out under network coverage or without network coverage.
  • UE1 and other UEs can communicate under network coverage; or, as shown in Figure 1
  • UE1 and other UEs can communicate outside the network coverage (out-of-coverage) .
  • the configuration information during SL communication between the terminal device and the terminal device may be configured or scheduled by the network device, or may be independently selected by the terminal device. , not restricted.
  • FIG. 1 and FIG. 2 are only simplified schematic diagrams for ease of understanding.
  • the wireless communication system may also include other network devices or other terminal devices, which are not shown in FIG. 1 and FIG. 2 .
  • the embodiments of this application can be applied to any communication scenario in which the sending device and the receiving device communicate.
  • the embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be executed according to the present application.
  • the methods provided by the embodiments are sufficient for communication.
  • the execution subject of the methods provided by the embodiments of this application may be a terminal device, or a functional module in the terminal device that can call a program and execute the program.
  • the spectrum used by wireless communication systems is divided into two categories, licensed spectrum and unlicensed spectrum.
  • licensed spectrum UE can use spectrum resources based on the scheduling of network equipment.
  • unlicensed spectrum communication devices can use spectrum resources in a competitive manner.
  • SL communication on the unlicensed spectrum can be called sidelink unlicensed spectrum (sidelink unlicense, SL-U), and NR cellular communication on the unlicensed spectrum can be called NR-U.
  • SL-U sidelink unlicensed spectrum
  • NR-U NR cellular communication on the unlicensed spectrum
  • SL-U mainly refers to SL transmission in unlicensed spectrum (unlicense band).
  • the standard introduces two access mechanisms including Type 1 and Type 2.
  • Type 1 is used in the scenario of channel preemption, which requires listen-before-talk (LBT), that is, monitoring is required before transmission.
  • LBT listen-before-talk
  • the monitoring can be energy detection, that is, detecting energy at 9 ⁇ s. If it exceeds the threshold, it means that a UE is occupying the resource; conversely, if it does not exceed the threshold, it means that no UE is occupying the resource.
  • Type 2 is used to share transmission resources obtained by other UEs through Type 1 method.
  • Type 1 For example, UE1 uses Type 1 to seize the transmission opportunity within a period of time (i.e., channel occupancy time (COT)). In addition to the transmission time occupied by itself, it can instruct other UEs to use Type 2 to access the transmission time occupied by UE1. The remaining transmission opportunities within the COT.
  • Type 2 includes Type 2A and Type 2B.
  • Type 2A indicates that the channel will be occupied after an interval of 25 ⁇ s after the transmission of other UEs. That is, if no other UE is used within 25 ⁇ s by sensing the channel, the channel can be occupied.
  • Type 2B means that the channel is occupied after an interval of 16 ⁇ s after the transmission of other UEs.
  • the difference from Type 2A is 9 ⁇ s, which is the length of a sensing slot.
  • the UE Before transmission, the UE must perform LBT on each 20MHz channel, and the 20MHz channel can be called an LBT channel. In order to avoid interference from different channels, the UE cannot send data on the entire 20MHz bandwidth. Instead, it leaves a part of the frequency band resources as a guard band and only sends data in the remaining part of the frequency domain resources. This part of the available resources is used It is called resource block set (RB set).
  • RB set resource block set
  • the protection bandwidth between the two RB sets can be used to transmit data and improve resource utilization.
  • SL transmission is based on resource pools.
  • Each resource pool contains one or more subchannels.
  • Each subchannel in the same resource pool occupies the same frequency domain resources (i.e., the number of physical resource blocks (PRBs)).
  • PRBs physical resource blocks
  • Different resource pools occupy the same frequency domain resources.
  • the frequency domain resources occupied by each sub-channel may be different.
  • a resource pool is a logical concept.
  • a resource pool includes multiple physical resources, any one of which is used to transmit data. Each UE needs to select a resource from the resource pool when transmitting data. This resource is well chosen process, including the following two situations:
  • the UE is controlled by the network device and selects a resource from the resource pool for data transmission according to the instruction information of the network device, also known as Mode 1;
  • the UE autonomously selects a resource from the resource pool for data transmission, also known as Mode2. That is, the UE has the opportunity to independently decide on resource selection and resource allocation.
  • the UE can exclude some occupied or high-interference resources based on the occupancy of the sensing spectrum, and select transmission resources on idle or low-interference resources.
  • Resources refer to time-frequency resources in the resource pool. Data or information can be carried through time-frequency resources.
  • time-frequency resources may include one or more time domain units (or may also be called time units).
  • a time domain unit can be a symbol, or a mini-slot, or a slot, or a partial slot, or a subframe, or a Wireless frame (frame), etc.
  • symbol is the abbreviation of time domain symbol, which can also be called orthogonal frequency division multiplexing (OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • time domain symbols can also be named in combination with other multiple access methods, which is not limited in the embodiments of this application. For different subcarrier spacing, the time domain symbol length can be different.
  • time-frequency resources may include one or more frequency domain units.
  • a frequency domain unit can be a resource element (RE), or a resource block (RB), or a subchannel (subchannel), or a subband (subband), or a resource pool (resource pool) ), or a bandwidth (bandwidth), or a bandwidth part (BWP), or a carrier (carrier), or a channel (channel), or an interlace RB, etc.
  • PSCCH carries first-order sidelink control information (SCI)
  • PSSCH carries second-order SCI and/or data
  • PSFCH carries feedback information.
  • PSCCH/PSSCH includes PSCCH and/or PSSCH.
  • the symbols used for transmitting and receiving or transmitting and receiving conversion may be called empty symbols (GAP symbols).
  • GAP symbols On a null symbol, a communications device typically neither transmits nor receives.
  • the terminal device may receive and transmit the PSSCH respectively in two consecutive time slots, or the terminal device may receive and transmit the PSSCH and PSFCH respectively in the same time slot. Therefore, after receiving the PSSCH and sending the PSFCH, an additional GAP symbol needs to be added for the terminal device's transceiver conversion.
  • AGC symbols can be used to transmit data or reference signals.
  • the AGC symbol is located at the starting symbol of transmission, such as symbol 0 of PSCCH/PSSCH transmission, such as symbol 11 of PSFCH transmission. Because AGC adjustment and receiving and decoding data cannot be performed at the same time. Therefore the signal on the AGC symbol is a copy of the signal content on the next symbol. Since the SL transmission maintains equal power on each symbol, the contents of the remaining symbols can be received based on the results of automatic gain control of the AGC symbols.
  • the AGC symbol and the GAP symbol are located in the first symbol and the last symbol of the subframe (or time slot) respectively.
  • the receiving end UE cannot know the transmission power and other information of the sending end UE. Therefore, the receiver cannot adjust the power amplifier to a suitable range, and direct reception cannot successfully decode.
  • R16NRV there is a symbol used for AGC before each transmission. After the receiving end receives the first symbol, the power amplifier is adjusted according to the symbol to better receive subsequent transmissions. However, the more AGCs there are, the more complex the receiver will be and the greater the overhead will be.
  • the symbols configured or preconfigured for SL are determined based on the high-level parameters sl-StartSymbol and sl-LengthSymbols.
  • sl-StartSymbol indicates the first symbol configured for SL in the timeslot
  • sl-LengthSymbols indicates the number of symbols configured for SL in the timeslot.
  • sl-StartSymbol is the symbol index of the first symbol of sl-LengthSymbols consecutive symbols configured for SL.
  • the value range of sl-StartSymbol is any one of ⁇ 0,1,2,3,4,5,6,7 ⁇ .
  • the value range of sl-LengthSymbols is any one of ⁇ 7,8,9,10,11,12,13,14 ⁇ .
  • SL BWP or resources in the SL resource pool have the same sl-StartSymbol and sl-LengthSymbols.
  • the resource allocation of PSSCH and/or PSCCH starts from symbol sl-StartSymbol+1. Resource allocation is okay It is called mapping.
  • the second symbol transmitted by PSFCH is the symbol of sl-StartSymbol+sl-LengthSymbols-2.
  • the AGC symbol is called a duplicated symbol (DS) in the protocol, which means that the content of the first symbol mapping PSSCH is copied to this symbol. Similarly, the contents of the first symbol mapping the PSCCH are also copied to this symbol.
  • the first symbol to which the PSSCH is mapped and the first symbol to which the PSCCH is to be mapped are the same symbol.
  • the content on the first symbol includes PSCCH, PSSCH, DM-RS, phase tracking reference signal (PT-RS) or CSI-RS.
  • PSCCH and PSSCH are mapped starting from symbol 1, and at least one of DM-RS, PT-RS or CSI-RS is mapped on symbol 1, then all resource units RE on symbol 1 are copied to on all REs of symbol 0. In other words, symbol 1 and symbol 0 are exactly the same.
  • the AGC symbol is called a duplicate symbol in the protocol because the content of the second symbol transmitted by PSFCH is copied to the first symbol transmitted by PSFCH.
  • the first symbol transmitted by the PSFCH is a duplicate symbol, that is, the symbol used for AGC.
  • the terminal equipment starts transmitting SL information from the first AGC symbol
  • the first AGC symbol may be the content of the first symbol of the copied PSCCH or PSSCH.
  • the terminal equipment starts transmitting feedback information from the second AGC symbol, and the second AGC symbol may be the content of the first symbol of the copied PSFCH.
  • the AGC symbol can refer to either the "AGC symbol of PSCCH/PSSCH” or the “AGC symbol of PSFCH”. If distinction is needed, use "PSCCH/PSSCH AGC symbol” or "PSFCH AGC symbol” to call it.
  • the transmission of side-link information refers to the terminal device transmitting side-link information through the resources in the resource pool.
  • the resources in the resource pool can carry PSCCH, PSSCH, PSFCH, and one or more sidelink information among DMRS, PT-RS, and CSI-RS.
  • the sidelink information in LTE does not include PSFCH.
  • resources in the resource pool can also be used for AGC, or for transceiver or transceiver conversion.
  • the sending UE sends data through PSSCH and carries control information for decoding the data in PSSCH in SCI.
  • SCI can be sent through PSCCH.
  • SCI includes first-order SCI, and/or second-order SCI.
  • the first-order SCI is sent through the PSCCH, and the second-order SCI is sent through the PSSCH.
  • the receiving UE sends HARQ feedback to the sending UE through PSFCH to inform the sending UE whether the data is received correctly.
  • a single subcarrier on a single OFDM symbol is the smallest unit of frequency domain resources, called a resource element.
  • RE The scheduling granularity of PSCCH and PSSCH is time slot in time domain and sub-channel in frequency domain.
  • a sub-channel is composed of ⁇ 10,12,15,20,25,50,75,100 ⁇ RBs, and the specific value is RRC Signaling instructions or preconfiguration.
  • One RB refers to a frequency domain resource unit composed of 12 consecutive subcarriers.
  • the scheduling unit of PSFCH is one symbol in the time domain and one RB in the frequency domain. RB can also be called PRB.
  • a time slot is the smallest time domain resource scheduling granularity.
  • Each time slot contains 14 symbols, including at least 1 AGC symbol and 1 GP symbol.
  • mini-slots In order to meet the ultra-low latency requirements of services such as the Industrial Internet, it may be necessary to use mini-slots in SL. To facilitate understanding, the structures of SL time slots and mini-time slots are schematically explained below with reference to Figures 3 and 4.
  • Figure 3 is a schematic diagram of the SL time slot structure.
  • the unit of the time domain resource of the resource pool is a time slot
  • the time domain resource carrying sidelink information is a time slot.
  • the time domain resource includes 14 symbols, that is, symbols 0 to 13
  • the frequency domain resource includes 3 sub-channels.
  • the resource includes the PSFCH resource, that is, there is an overhead of 3 additional symbols (symbol 11 to symbol 13).
  • the PSFCH resource occupies symbol 12
  • symbol 11 is the AGC symbol, which is mainly used to send the UE to adjust the amplification factor of the received signal
  • symbol 13 is the GP symbol.
  • symbol 0 is an AGC symbol, which is mainly used for the receiving UE to adjust the amplification factor of the received signal
  • symbol 10 is a GP symbol, which is mainly used for transceiver conversion or transceiver conversion.
  • PSCCH is mapped from symbol 1 and occupies subchannel 0 from symbol 1 to symbol 3.
  • PSSCH occupies all time-frequency resources of 6 symbols (ie, symbol 4 to symbol 9), as well as subchannel 1 and subchannel 2 from symbol 1 to symbol 3. .
  • the resources do not include PSFCH resources.
  • Symbol 0 is the AGC symbol and symbol 13 is the GP symbol.
  • PSCCH is mapped from symbol 1 and occupies sub-channel 0 from symbol 1 to symbol 3
  • the second-order SCI occupies the second sub-channel from symbol 1 to symbol 3.
  • PSSCH occupies all time-frequency resources of 9 symbols (ie, symbols 4 to 12), as well as subchannel 1 and subchannel 2 of symbols 1 to 3. That is to say, the starting positions of PSCCH and PSSCH in the time domain are the same.
  • first-order SCI can be carried in On PSCCH
  • the second-order SCI can be carried on PSSCH.
  • Figure 4 is a schematic diagram of the SL micro-slot structure.
  • the unit of the time domain resource of the resource pool is a time slot
  • the time domain resource carrying sidelink information is a time slot.
  • the time domain resource includes 14 symbols, namely symbols 0 to 13.
  • the frequency domain resource includes 3 sub-channels, and each time slot contains 2 mini-slots.
  • the resource includes the PSFCH resource, that is, there is an overhead of 3 additional symbols (symbol 11 to symbol 13).
  • micro-slot 1 includes symbols 0 to 4
  • micro-slot 2 includes symbols 5 to 10, symbols 0, 5, and 11 are AGC symbols
  • symbols 4, 10, and 13 are GP symbols.
  • Subchannel 0 of symbols 1 to 3, and subchannel 0 of symbols 6 to 8 are used to map the PSCCH.
  • Subchannel 1 and subchannel 2 of symbols 1 to 3, subchannel 1 and subchannel 2 of symbols 6 to 8, and all resources of symbol 9 are used to map the PSSCH.
  • Symbol 12 is used to map PSFCH.
  • the resource does not include PSFCH resources.
  • Micro-slot 1 includes symbols 0 to 6
  • micro-slot 2 includes symbols 7 to 13, symbols 0 and 7 are AGC symbols, and symbols 6 and 13 are GP symbols.
  • Subchannel 0 of symbols 1 to 3, and subchannel 0 of symbols 8 to 10 are used to map the PSCCH.
  • Subchannel 1 and subchannel 2 of symbols 1 to 3, subchannel 1 and subchannel 2 of symbols 8 to 10, and all resources of symbols 4, 5, 11, and 12 are used to map the PSSCH.
  • this application provides a communication method and device, which sets the AGC processing time and reconfigures the time slot structure according to the capabilities of different UEs.
  • this method can reduce system overhead and improve spectrum utilization, while maintaining compatibility with UEs with lower processing capabilities.
  • this method can improve the flexibility of symbol configuration.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character "/” generally indicates that the related objects are in an "or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , b and c.
  • a, b and c can be single or multiple respectively.
  • for instructions may include for direct instructions and for indirect instructions.
  • indication information when describing that certain indication information is used to indicate A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.
  • the instruction methods involved in the embodiments of this application should be understood to cover various methods that can enable the party to be instructed to obtain the information to be instructed.
  • the information to be instructed can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending cycle and/or sending timing of these sub-information can be the same or different. This application does not limit the specific sending method.
  • the "instruction information" in the embodiment of this application may be an explicit indication, that is, a direct indication through signaling, or based on the parameters of the signaling indication, Combined with other rules or combined with other parameters or obtained through derivation. It can also be an implicit indication, that is, obtained based on rules or relationships, or based on other parameters, or derivation. This application does not specifically limit this.
  • protocol may refer to a standard protocol in the communication field, which may include, for example, 5G protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this.
  • Preconfigured may include predefined. For example, protocol definition. Among them, “pre-definition” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device. This application does not limit its specific implementation method.
  • storage may refer to storage in one or more memories.
  • the one or more memories may be separately set or integrated in an encoder or decoder, a processor, or a communication device.
  • the one or more memories may also be partially separately set and partially integrated in a decoder, a processor, or a communication device.
  • the type of memory may be any form of storage medium, which is not limited in this application.
  • the "first terminal device” can be described as “UE1”
  • the “second terminal device” can be described as “UE2”, and so on, which is no longer emphasized in this application.
  • the frequency range corresponding to frequency range 1 is 450MHz-6.0GHz, that is, the frequency band below 6GHz, and the maximum channel bandwidth is 100MHz.
  • the corresponding frequency range of frequency range 2 (FR2) is 24.25GHz-52.6GHz, which is the millimeter wave frequency band, and the maximum channel bandwidth is 400MHz.
  • the time for the UE to perform transceiver conversion or transceiver conversion does not exceed 13 ⁇ s
  • the time for the UE to perform AGC is related to the receiver implementation and parameter settings. For example, when the subcarrier spacing (SCS) is 30kHz, some receivers require more than 35 ⁇ s to complete AGC, while some receivers can complete AGC in less than 18 ⁇ s. Table 1 shows the symbol times corresponding to different SCS.
  • SCS subcarrier spacing
  • the SCS supported by the SL system includes 15kHz, 30kHz and 60kHz.
  • the corresponding symbol time is 71.35 ⁇ s; when SCS is 30kHz, the corresponding symbol time is 35.68 ⁇ s; when SCS is 60kHz, the corresponding symbol time is 17.84 ⁇ s; that is to say, when When the SCS is 15kHz and 30kHz, the duration of 0.5 symbols is greater than 13 ⁇ s, and both can be used by the UE for transceiver conversion or transceiver conversion. So for SCS of 15kHz and 30kHz, 0.5 symbols can be set as GP.
  • the AGC time is set according to different UE capabilities, that is, the design of the time slot structure is completed. Of course, the technical solution of this application is also suitable for the time slot structure with an SCS of 60 kHz, and is not specifically limited.
  • FIG. 5 is a schematic flowchart of a communication method 500 provided by an embodiment of the present application. As shown in Figure 5, the method includes the following steps.
  • the first terminal device obtains first information.
  • the first information is used to indicate the AGC processing capability of the second terminal device.
  • the second terminal device sends the first information to the first terminal device; correspondingly, the first terminal device receives the first information from the second terminal device.
  • the base station sends the first information to the first terminal device; correspondingly, the first terminal device receives the first information from the base station.
  • the AGC processing capability of the second terminal device can be understood as: the length of time the second terminal device performs AGC.
  • the base station may configure or pre-configure the AGC processing capability of the second terminal device through RRC, MAC CE, or DCI.
  • the AGC processing capabilities of terminal devices in the current communication system include: processing capability 1 and processing capability 2.
  • the terminal device with processing capability 1 takes less than or equal to 18 ⁇ s to process AGC, and the terminal device with processing capability 2 takes more than 18 ⁇ s to process AGC. or equal to 35 ⁇ s.
  • the terminal device with processing capability 2 also referred to as UE2 needs to configure more AGC resources, and the terminal device with processing capability 1 (also referred to as UE1) only needs to configure fewer AGC resources.
  • the AGC processing capability of UE1 is stronger than that of UE2.
  • the first information may include the AGC processing capabilities of all second terminal devices or part of the second terminal devices, which is not specifically limited in this application.
  • S520 The first terminal device determines the first resource according to the first information.
  • the first terminal device can determine the corresponding AGC processing duration, and further determine the first resource used to transmit sidelink information.
  • the sidelink information here may include but is not limited to: PSCCH and/or PSSCH.
  • the first terminal device may determine the first resource according to the AGC processing capability of at least one second terminal device among the plurality of second terminal devices, for example, in the first
  • the first terminal device can use the AGC processing capability of the second terminal device (for example, UE3) with the longest AGC processing time.
  • determine the first resource determine the first resource
  • this implementation can be understood as the first terminal device sending the same data packet to UE2 and UE3 on the first resource at the same time through multicast or broadcast.
  • the first terminal device can learn the AGC processing capabilities of UE2 and UE3, and The first resources are determined for UE2 and UE3 respectively, and so on.
  • the resources used by the first terminal device to send sideline data information and control information to the second terminal device are called first resources, which may include PSSCH resources and/or PSCCH resources;
  • the resources used by the second terminal device to perform AGC before receiving data information and control information are called second resources, and the resources used by the second terminal device to transmit the first feedback information to the first terminal device are called third resources,
  • the resources used by the first terminal device to perform AGC before receiving the first feedback information are called fourth resources.
  • the second resource is determined based on the first information
  • the third resource is determined based on the second information.
  • the second information is used to indicate the AGC processing capability of the first terminal device. The relevant parts below will not be repeated.
  • the first information includes a first value
  • the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit
  • the time domain resource of the second resource is located at the second part of the first symbol in the first time unit.
  • the first value may be a bit "1", which is used to indicate that the AGC processing capability of the second terminal device is strong, that is, the AGC processing time is short (for example, processing capability 1).
  • the SCS is 30kHz
  • the corresponding symbol time is 35.68 ⁇ s
  • "1" indicates that the AGC processing time of the second terminal device is 16 ⁇ s
  • the second terminal device can occupy half a symbol to complete AGC. It should be noted that this implementation method is suitable for UEs with strong AGC processing capabilities.
  • the first information includes the second value, the starting position of the time domain resource of the first resource is located at the third symbol in the first time unit, and the time domain resource of the second resource is located at the third symbol.
  • the second value may be a bit "0", which is used to indicate that the AGC processing capability of the second terminal device is weak, that is, the AGC processing time is long (eg, processing capability 2).
  • the AGC processing time is long (eg, processing capability 2).
  • the SCS is 30kHz
  • the corresponding symbol time is 35.68 ⁇ s
  • "0" indicates that the AGC processing time of the second terminal device is 36 ⁇ s
  • this implementation method is suitable for UEs with weak AGC processing capabilities.
  • the sidelink information transmitted by the first terminal equipment on the first resource is carried in the PSSCH of the first time unit, then the time unit of the PSCCH associated with the PSSCH may be the first time unit, or may be located in the first time unit. time unit before.
  • the first symbol precedes the second symbol in the time domain, and the second symbol precedes the third symbol in the time domain.
  • the first symbol of the first time unit includes a first part and a second part, the first part of the first symbol is empty, and the first part of the first symbol is located before the second part in the time domain.
  • the configuration of the time slot structure is explained by taking the unit of the time domain resource of the resource pool as a time slot and the time domain resource carrying sidelink information as a time slot as an example.
  • the current time slot includes 14 symbols. Assuming that the SCS is 30kHz and the duration of each symbol is 35.68 ⁇ s, the duration of 0.5 symbols can be used by the UE for transceiver conversion or transmission. Receive conversion. That is, the first part of the first symbol is set to GP, for example, the duration of the first part is greater than or equal to 13 ⁇ s; the second part is set to AGC, for example, the duration of the second part is greater than or equal to 18 ⁇ s. The second symbol is used for AGC or for mapping PSSCH, depending on the AGC processing capability of the second terminal device (ie, the receiving UE). The 3rd to 14th symbols are used to map PSSCH for data transmission.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit may be configured by the network device or may be (pre)configured by the resource pool.
  • the starting position of the time domain resources occupied by the PSCCH is located in the time slot where the PSCCH is located.
  • the first terminal equipment sending UE transmits valid information on the 2nd symbol (maps the PSSCH )
  • the resource location of the PSCCH is fixed, and the second terminal device only needs to blindly detect the PSCCH starting from the third symbol.
  • the first terminal device may send an SCI to the second terminal device to indicate whether the second symbol is mapped to the PSSCH, so that the second terminal device can determine whether the PSSCH needs to be decoded on the second symbol.
  • the first terminal device needs to set the second symbol in Figure 6 (a) to AGC , for example, the second symbol can be a copy of the third symbol; as shown in Figure 7 (b), for the second terminal device with AGC processing capability 1, AGC can be completed in less than 18 ⁇ s, then the first The terminal equipment can use the second symbol in (a) of Figure 6 to map the PSSCH to increase the resources available for data transmission and improve resource utilization.
  • the first resource can occupy symbols 1 to 13 of one time slot, and the second resource is located 0.5 symbols before the first resource, that is, Occupies the second half of symbol 0 of this time slot; for the second terminal device with AGC processing capability 2, the first resource occupies symbols 2 to 13 of one time slot, and the second resource is located 1.5 symbols before the first resource , that is, occupying the second half of symbol 0 of this slot, and symbol 1.
  • the first resource and the second resource may be located in the same time slot, or may be located in different time slots, which is not limited in this application.
  • the first information includes a first value
  • the starting position of the time domain resource of the first resource is located in the second part of the first symbol in the first time unit
  • the time domain resource of the first resource The end position of the resource is located at the first part of the last symbol in the third time unit
  • the time domain resource of the second resource is located at the first part of the first symbol in the first time unit.
  • the first information includes a second value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, the ending position of the time domain resource of the first resource is located at the first part of the last symbol in the third time unit, and the time domain resource of the second resource is located at the first symbol in the first time unit.
  • the first symbol precedes the second symbol in the time domain
  • the first part of the first symbol precedes the second part of the first symbol in the time domain.
  • the last symbol of the third time unit includes the first part and the second part, the second part of the last symbol is empty, and the third time unit is the same as the first time unit; or, the third time unit is located in the first time domain after the time unit.
  • the third time unit is the same as the first time unit, and one time unit is a time slot (symbol 0 to symbol 13), for a second terminal device with AGC processing capability 1 (corresponding to the first value) , the starting position of the time domain resource of the first resource is the second half of symbol 0 of time slot 1, the end position of the time domain resource of the first resource is the first half of symbol 13 of time slot 1, and the time domain resource of the second resource
  • the starting position of the domain resource is the first half of symbol 0 of timeslot 1; for the second terminal device with AGC processing capability 2 (corresponding to the second value), the starting position of the time domain resource of the first resource is the first half of symbol 0 of timeslot 1.
  • Symbol 1 the end position of the time domain resource of the first resource is the first half of symbol 13 of timeslot 1
  • the starting position of the time domain resource of the second resource is symbol 0 of timeslot 1.
  • the third time unit is located after the first time unit in the time domain, and one time unit is a time slot (symbol 0 to symbol 13), for AGC processing capability 1 (corresponding to the first value)
  • the starting position of the time domain resource of the first resource is the second half of symbol 0 of time slot 1
  • the end position of the time domain resource of the first resource may be the first half of symbol 13 of time slot 3
  • the starting position of the time domain resource of the second resource is the first half of symbol 0 of timeslot 1;
  • the starting position of the time domain resource of the first resource is symbol 1 of time slot 1
  • the end position of the time domain resource of the first resource is the first half of symbol 13 of time slot 3
  • the starting position of the time domain resource of the second resource is symbol 0 of time slot 1.
  • the time domain resource of the first resource in this implementation continuously occupies symbols from time slot 1 to time slot 3, or in other words, it can be understood that the first terminal device continuously occupies symbols from time slot 1 to time slot 3.
  • the second terminal device sends the same data.
  • the configuration of the time slot structure is explained by taking the unit of the time domain resource of the resource pool as a time slot and the time domain resource carrying sidelink information as a time slot as an example.
  • the current time slot includes 14 symbols. Assuming that the SCS is 30kHz and the duration of each symbol is 35.68 ⁇ s, the duration of 0.5 symbols can be used by the UE for transceiver conversion or transceiver conversion. That is, the first part of the last symbol can be used for PSSCH, and the second part of the last symbol can be used for GP. All or part of the first symbol is used for AGC, depending on the second terminal equipment (i.e. the connected The AGC processing capability of UE). The 2nd to 14th symbols are used to map PSSCH for data transmission.
  • the first terminal device can set all the first symbols for AGC, for example, the first symbol can is a copy of the second symbol; for the second terminal device with AGC processing capability 1, AGC can be completed in less than 18 ⁇ s, then the first terminal device can map the second part of the first symbol to PSSCH, and the second The terminal device can use one or more repetitions in the time domain to perform AGC, and use the remaining one or more repetitions to perform PSSCH decoding, so as to increase the resources available for data transmission and improve resource utilization.
  • the first resource may occupy the second half of symbol 0, symbol 1 to symbol 12, and the first half of symbol 13 of a time slot, and the second resource is located in the first resource
  • the first 0.5 symbols occupy the first half of symbol 0 of this time slot
  • the first resource occupies the first half of symbol 1 to symbol 12 and symbol 13 of one time slot.
  • the second resource is located one symbol before the first resource, that is, symbol 0 occupying this time slot.
  • the starting and ending positions of the time domain resources of the first resource are in the same time slot.
  • the starting and ending positions of the time domain resources of the first resource may also be located in different time slots.
  • the starting position of the time domain resource of the first resource is located at symbol 1 of slot 1
  • the end position of the time domain resource of the first resource is located at the first half of symbol 13 of slot 3, indicating that the first terminal device can continuously
  • the same data is sent to the second terminal device in time slots 1 to 3, which is not limited in this application.
  • the first symbol can be resource mapped in the frequency domain using a comb tooth method.
  • comb tooth 2 is used in the frequency domain for mapping, it means that every other SCS or RE is mapped to modulated data.
  • the time domain symbol will contain two repeated parts. , that is, the time domain signals of the first 0.5 symbols and the last 0.5 symbols are the same.
  • the frequency domain uses comb N for mapping, it means that every N-1 SCS or RE is mapped to modulated data.
  • the time domain symbol will contain N repeated parts.
  • the second terminal device may use part of the N repetitions to perform PSSCH decoding on the symbol.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit may be configured by the network device or may be (pre)configured by the resource pool.
  • the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the timeslot in which the PSCCH is located. That is, part or all of the frequency domain resources from the 2nd symbol to the 4th symbol are also used to map the PSCCH. That is to say, in order to reduce the complexity of the PSCCH blind detection, the PSCCH can be mapped starting from the second symbol.
  • the resource location of the PSCCH is fixed, and the second terminal device only needs to blindly detect the PSCCH starting from the second symbol.
  • the first terminal device may send an SCI to the second terminal device to indicate whether the first symbol is mapped to the PSSCH, so that the second terminal device can determine whether the PSSCH needs to be decoded on the first symbol.
  • the second information includes the first value
  • the time domain resource of the third resource is located in the penultimate symbol of the second time unit, and the last symbol of the second time unit
  • the time domain resource of the fourth resource is located in the penultimate symbol of the second time unit.
  • the time domain resource is located in the second part of the third to last symbol in the second time unit, and the fourth resource is used for the first terminal device to perform AGC.
  • the first value may be a bit "1", which is used to indicate that the AGC processing capability of the first terminal device is strong, that is, the AGC processing time is short (for example, processing capability 1).
  • the SCS is 30kHz
  • the corresponding symbol time is 35.68 ⁇ s
  • "1" indicates that the AGC processing time of the first terminal device is 16 ⁇ s
  • the first terminal device can occupy half a symbol to complete AGC. It should be noted that this implementation method is suitable for UEs with strong AGC processing capabilities.
  • the second information includes a second value
  • the time domain resource of the third resource is located at the last symbol of the second time unit
  • the time domain resource of the fourth resource is located at the penultimate symbol of the second time unit.
  • the second part of the three symbols, and the penultimate symbol of the second time unit, the fourth resource is used by the first terminal device to perform AGC.
  • the second value may be a bit "0", which is used to indicate that the AGC processing capability of the first terminal device is weak, that is, the AGC processing time is long (for example, processing capability 2).
  • the AGC processing time is long (for example, processing capability 2).
  • the SCS is 30 kHz
  • the corresponding symbol time is 35.68 ⁇ s
  • "0" indicates that the AGC processing time of the first terminal device is 36 ⁇ s
  • this implementation method is suitable for UEs with weak AGC processing capabilities.
  • the penultimate symbol is located before the second to last symbol in the time domain, and the penultimate symbol is located before the last symbol in the time domain.
  • the third to last symbol of the second time unit includes the first part and the second part.
  • the first part of the third to last symbol is empty, and the first part of the third to last symbol is located in the third to last symbol in the time domain.
  • the second time unit is the same as the first time unit, or the second time unit is located between the first time unit in the time domain. back. That is to say, the technical solution of this application does not limit every time unit to be mapped with PSFCH.
  • the current time slot includes 14 symbols. Assuming that the SCS is 30kHz and the duration of each symbol is 35.68 ⁇ s, the duration of 0.5 symbols can be used by the UE for transceiver conversion or transmission. Receive conversion. That is, the first part of the first symbol is set to GP, for example, the duration of the first part is greater than or equal to 13 ⁇ s; the second part is set to AGC, for example, the duration of the second part is greater than or equal to 18 ⁇ s. The second symbol is used for AGC or for mapping PSSCH, depending on the AGC processing capability of the second terminal device (ie, the receiving UE). The 3rd to 11th symbols are used to map PSSCH for data transmission.
  • the position of the time domain resource and/or frequency domain resource used to map the PSCCH in each time unit may be configured by the network device or may be (pre)configured by the resource pool, that is, the 3rd symbol to the 5th symbol. Part or all of the frequency domain resources of the symbol are also used to map the PSCCH.
  • the first part of the 12th symbol is set to GP and the second part of the 12th symbol is set to AGC.
  • the 13th symbol is used for AGC or for mapping PSFCH, depending on the AGC processing capability of the first terminal equipment (ie, the sending UE).
  • the second to last symbol needs to be set to AGC.
  • the second to last symbol can be a copy of the last symbol; for If the first terminal device with AGC processing capability 1 can complete AGC in less than 18 ⁇ s, the penultimate symbol can be used to map the PSFCH to increase the resources available to the second terminal device for HARQ feedback transmission and improve resources. Utilization.
  • the first resource may occupy symbols 1 to 10 of one time slot, and the second resource is located 0.5 before the first resource. symbols, that is, occupying the second half of symbol 0 of this time slot, the third resource occupies symbol 12 and symbol 13 of this time slot, and the fourth resource occupies the second half of symbol 11 of this time slot; for AGC processing capability 2
  • the second terminal equipment the first resource occupies the second half of symbol 1, symbol 2 to symbol 10 of a time slot, and the second resource is located 1.5 symbols before the first resource, that is, it occupies symbol 0 of the time slot.
  • the second half, as well as symbol 1 the third resource occupies symbol 13 of the timeslot, and the fourth resource occupies the second half of symbol 11 and symbol 12 of the timeslot.
  • the first information includes a first value
  • the starting position of the time domain resource of the first resource is located in the second part of the first symbol in the first time unit, and the time domain resource of the second resource
  • the resource is located in the first part of the first symbol in the first time unit; at the same time, the second information includes the first value, the time domain resource of the third resource is located in the penultimate symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the first part of the first symbol in the first time unit.
  • the domain resource is located in the third to last symbol of the fourth time unit.
  • the first information includes the second value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and the time domain resource of the second resource is located at the second symbol.
  • the first value of the first information here is used to indicate that the AGC processing capability of the second terminal device is strong (for example, processing capability 1) and the AGC processing time is short; the first value of the second information is used to indicate that the first terminal device The device has strong AGC processing capability (for example, processing capability 1) and the AGC processing time is short.
  • the first resource and the second resource in this application are determined based on the first information.
  • the second value of the first information here is used to indicate that the AGC processing capability of the second terminal device is weak (for example, processing capability 2) and the AGC processing time is long; the second value of the second information is used to indicate that the first The AGC processing capability of the terminal device is strong (for example, processing capability 2), and the AGC processing time is long.
  • the third resource and the fourth resource in this application are determined based on the second information.
  • the last symbol of the fourth time unit is a null symbol
  • the fourth time unit is the same as the first time unit
  • the fourth time unit is located after the first time unit in the time domain.
  • the configuration of the time slot structure is explained by taking the unit of the time domain resource of the resource pool as a time slot and the time domain resource carrying sidelink information as a time slot as an example.
  • the current time slot includes 14 symbols. Assuming that the SCS is 30kHz and the duration of each symbol is 35.68 ⁇ s, the duration of 0.5 symbols can be used by the UE for transceiver conversion or transmission. Receive conversion. For example, for the second terminal device with AGC processing capability 2, it takes at least 35 ⁇ s to complete AGC, then the first terminal device can set all the first symbols for AGC, for example, the first symbol can be the second symbol Copy; for another example, for the second terminal device with AGC processing capability 1, AGC can be completed in less than 18 ⁇ s, then the first terminal device can map the second part of the first symbol to PSSCH.
  • the 2nd to 10th symbols and the first part of the 11th symbol are used for mapping PSSCH, and the second part of the 11th symbol is used for GP.
  • this time slot structure needs to reserve 3 additional symbols, that is, the 12th symbol is used for AGC, the 13th symbol is used for PSFCH, and the 14th symbol is used for GP.
  • the location of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit may be configured by the network device, It can also be (pre)configured by a resource pool.
  • the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the timeslot in which the PSCCH is located. That is, part or all of the frequency domain resources from the 2nd symbol to the 4th symbol are also used to map the PSCCH.
  • the first resource may occupy the second half of symbol 0, symbols 1 to 9, and 10 of symbol 10 of one time slot.
  • the second resource is located 0.5 symbols before the first resource, that is, it occupies the second half of symbol 0 of this time slot, the third resource occupies symbol 12 of this time slot, and the fourth resource occupies symbol 11 of this time slot.
  • the first resource occupies symbols 1 to 9 and the first half of symbol 10 of a time slot, and the second resource is located 1 symbol before the first resource, that is, it occupies the time slot. Symbol 0 of the slot, the third resource occupies symbol 12 of the slot, and the fourth resource occupies symbol 11 of the slot.
  • the first terminal device may send an SCI to the second terminal device to indicate whether the first symbol is mapped to the PSSCH, so that the second terminal device can determine whether the PSSCH needs to be decoded on the first symbol.
  • the first information includes a first value, the starting position of the time domain resource of the first resource is located in the second part of the first symbol in the first time unit, and the time domain resource of the second resource is located in the first part of the first symbol in the first time unit; and/or, the second information includes a first value, the time domain resource of the third resource is located in the second part of the third-to-last symbol of the fourth time unit, the second-to-last symbol of the fourth time unit, and the first part of the last symbol of the fourth time unit, and the time domain resource of the fourth resource is located in the first part of the third-to-last symbol of the fourth time unit.
  • the first information includes the second value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and the time domain resource of the second resource is located at the second symbol.
  • the first symbol in a time unit; and/or the second information includes a second value, the time domain resource of the third resource is located in the penultimate symbol of the fourth time unit, and the last symbol of the fourth time unit In the first part, the time domain resource of the fourth resource is located in the penultimate symbol of the fourth time unit.
  • the first symbol precedes the second symbol in the time domain
  • the first part of the first symbol precedes the second part of the first symbol in the time domain
  • the first part of the last symbol Situated before the second part of the last symbol in the time domain.
  • the second part of the last symbol of the fourth time unit is empty
  • the fourth time unit is the same as the third time unit, or the fourth time unit is located after the third time unit in the time domain.
  • the current time slot includes 14 symbols. Assuming that the SCS is 30kHz and the duration of each symbol is 35.68 ⁇ s, the duration of 0.5 symbols can be used by the UE for transceiver conversion or transmission. Receive conversion.
  • the first terminal device can set all the first symbols for AGC.
  • the first symbol can be the second symbol. Copy of symbols; for the second terminal device with AGC processing capability 1, AGC can be completed in less than 18 ⁇ s, then the first terminal device can map the second part of the first symbol to PSSCH.
  • the first terminal device with AGC processing capability 2 it takes at least 35 ⁇ s to complete AGC, then all the 12th symbols can be set for AGC; for the first terminal device with AGC processing capability 1, it takes less than 35 ⁇ s to complete AGC. If AGC can be completed within 18 ⁇ s, the second part of the 12th symbol can be mapped to PSFCH to improve HARQ feedback reliability.
  • the 2nd symbol to the 10th symbol, and the first part of the 11th symbol are used for mapping PSSCH, the second part of the 11th symbol is used for GP, and the 13th symbol is used for mapping PSFCH,
  • the 14th symbol is for GP.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit may be configured by the network device or may be (pre)configured by the resource pool.
  • the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the timeslot in which the PSCCH is located. That is, part or all of the frequency domain resources from the 2nd symbol to the 4th symbol are also used to map the PSCCH.
  • the first resource may occupy the second half of symbol 0, symbols 1 to 9, and 10 of symbol 10 of one time slot.
  • the second resource is located 0.5 symbols before the first resource, that is, it occupies the second half of symbol 0 of this time slot, and the third resource occupies the second half of symbol 11, symbol 12, and symbol 13 of this time slot.
  • the fourth resource occupies the first half of symbol 11 of the time slot; for the second terminal device with AGC processing capability 2, the first resource occupies the first half of symbol 1 to symbol 9 and symbol 10 of one time slot, and the second The resource is located in the 1 symbol before the first resource, that is, it occupies symbol 0 of this time slot.
  • the third resource occupies the second half of symbol 11, symbol 12, and the first half of symbol 13 of this time slot.
  • the fourth resource occupies the The first half of symbol 11 of the slot.
  • the first terminal device may send an SCI to the second terminal device to indicate whether the first symbol is mapped to the PSSCH, so that the second terminal device can determine whether the PSSCH needs to be decoded on the first symbol.
  • the first information includes a first value, and the starting position of the time domain resource of the first resource is located at the first time The second part of the first symbol in the unit, the time domain resource of the second resource is located in the first part of the first symbol in the first time unit; and/or the second information includes the first value, the time domain resource of the third resource
  • the time domain resource is located in the penultimate symbol of the fourth time unit and the first part of the last symbol of the fourth time unit.
  • the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the fourth time unit.
  • the first information includes the second value, the starting position of the time domain resource of the first resource is located at the second symbol in the first time unit, and the time domain resource of the second resource is located at the second symbol. the first symbol in a time unit; and/or the second information includes a second value, the time domain resource of the third resource is located in the second part of the penultimate symbol of the fourth time unit, and the fourth time unit The first part of the last symbol, the time domain resource of the fourth resource is located in the second part of the penultimate symbol of the fourth time unit, and the first part of the penultimate symbol of the fourth time unit.
  • the first symbol is located before the second symbol in the time domain
  • the first part of the first symbol is located before the second part of the first symbol in the time domain
  • the second part of the penultimate symbol is located in the time domain.
  • the first part precedes the second part of the penultimate symbol in the time domain.
  • the second part of the last symbol of the fourth time unit is empty, the fourth time unit is the same as the third time unit, or the fourth time unit is located after the third time unit in the time domain.
  • the first part of the penultimate symbol of the fourth time unit and the second part of the last symbol of the fourth time unit are empty, the fourth time unit is the same as the first time unit, or the fourth time unit is in the time domain is located after the first time unit.
  • the first terminal device can set all the first symbols for AGC.
  • the first symbol can be the second symbol. Copy of symbols; for the second terminal device with AGC processing capability 1, AGC can be completed in less than 18 ⁇ s, then the first terminal device can map the second part of the first symbol to PSSCH.
  • the first terminal device with AGC processing capability 2 it takes at least 35 ⁇ s to complete AGC, then the first part of the 13th symbol can be set for AGC; for the first terminal device with AGC processing capability 1, If AGC can be completed in less than 18 ⁇ s, all the 13th symbols can be mapped to PSFCH to improve HARQ feedback reliability.
  • mapping PSSCH the 2nd to 11th symbols are used for mapping PSSCH
  • the first part of the 12th symbol and the second part of the 14th symbol are used for GP
  • the first part of the 14th symbol is used for mapping PSFCH.
  • the locations of the time domain resources and/or frequency domain resources used to map the PSCCH in each time unit may be configured by the network device or may be (pre)configured by the resource pool.
  • the starting position of the time domain resource occupied by the PSCCH is located at the second symbol of the timeslot in which the PSCCH is located. That is, part or all of the frequency domain resources from the 2nd symbol to the 4th symbol are also used to map the PSCCH.
  • the first resource may occupy the second half of symbol 0, symbols 1 to 9, and 10 of symbol 10 of one time slot.
  • the second resource is located 0.5 symbols before the first resource, that is, it occupies the second half of symbol 0 of this time slot.
  • the third resource occupies the first half of symbol 12 and symbol 13 of this time slot.
  • the fourth resource occupies The second half of symbol 11 of this time slot; for the second terminal device with AGC processing capability 2, the first resource occupies the first half of symbol 1 to symbol 9 and symbol 10 of one time slot, and the second resource is located in the first resource The first symbol occupies symbol 0 of this time slot, the third resource occupies the second half of symbol 12 and the first half of symbol 13 of this time slot, and the fourth resource occupies the second half of symbol 11 of this time slot. , the first half of symbol 12.
  • the first terminal device may send an SCI to the second terminal device to indicate whether the first symbol is mapped to the PSSCH, so that the second terminal device may clearly know whether it is necessary to decode the PSSCH in the first symbol.
  • the first terminal device sends sidelink information to the second terminal device on the first resource
  • the second terminal device receives the sidelink information from the first terminal device.
  • the sidelink information may include one or more of the following: PSCCH, PSSCH, or reference signal.
  • the reference information may be DM-RS, PT-RS, CSI-RS, etc.
  • the first terminal device may indicate the first resource and/or the second resource to the second terminal device before performing step S530, so that the second terminal device can quickly detect and obtain sideline information, that is, perform the following step S501- S502.
  • the first indication information and the sidelink information may be sent in different time slots one after another.
  • the first terminal device sends the first instruction information to the second terminal device;
  • the second terminal device receives the first indication information from the first terminal device.
  • the first indication information is used to indicate a second resource for the second terminal device to perform AGC; or, the first indication information is used to indicate a first resource.
  • the second terminal device determines the first resource and the second resource according to the first indication information.
  • the first indication information may also include the side information in step S530.
  • the first indication information may be a first-order SCI, which is carried in the PSCCH; or the first indication information may be a second-order SCI, which is carried in the PSSCH. That is to say, in this implementation, the first indication information and the sidelink information may be sent in the same time slot.
  • the first indication information may also be semi-static information, for example, negotiated in advance between the first terminal device and the second terminal device, or configured or pre-configured by the base station for the first terminal device and the second terminal device.
  • the first indication information may or may not be sent, may be sent in the PSCCH resource, may also be sent in the PSSCH resource, may be sent in the same time unit as the sidelink information, or may be Earlier than sideline information transmission, etc., this application does not specifically limit this.
  • the second terminal device can send the first feedback information to the first terminal device on the corresponding PSFCH resource (ie, the third resource), that is, perform Steps S503-S504.
  • the corresponding PSFCH resource ie, the third resource
  • the second terminal device determines the third resource.
  • the third resource is used to transmit first feedback information.
  • the first feedback information is, for example, HARQ feedback and is used to indicate the reception of sidelink information or to indicate a retransmission request.
  • the PSFCH resource period is 4, that is, there is a PSFCH resource in 1 time slot out of every 4 time slots.
  • the resources, namely slot 0, slot 4, slot 8, slot 12, etc. are PSFCH slots.
  • sl-MinTimeGapPSFCH is configured as 2 time slots, that is, the PSFCH in slot 8 and its corresponding PSSCH need to be separated by at least two time slots, so the PSFCH in time slot 8 corresponds to the PSSCH in time slots 3 to 6 , that is, if the second terminal device receives the PSSCH on time slot 3 to time slot 6, the second terminal device will send ACK/NACK information on the PSFCH resource of time slot 8.
  • this application does not specifically limit the specific content of the first feedback information.
  • the PSFCH resource can be understood as the resource included in the entire PSFCH symbol
  • the third resource can be understood as the PRB resource on the PSFCH symbol actually occupied by the second terminal device to feedback the reception status of the sidelink information.
  • the second terminal device sends the first feedback information to the first terminal device on the third resource
  • the first terminal device receives the first feedback information from the second terminal device on the third resource.
  • the first feedback information may be used to feedback the reception status of the sidelink information.
  • mapping relationship between the third resource and the first resource in steps S503 and S504 may be (pre)configured by the resource pool.
  • the time domain resource of the third resource may be located two time slots after the time domain resource of the first resource.
  • the second terminal device can use the resources of two valid symbols in the time slot to perform HARQ feedback (for example, as shown in (b) of Figure 6).
  • the two symbols can be mapped to PSSCH resources respectively, so that the UE (for example, the second terminal equipment) sending HARQ feedback can be between the two PSFCH symbols.
  • steps S503-S504 and steps S505-S506 can be regarded as two implementation methods for the second terminal device to send feedback information to the first terminal device, and can be executed independently or in combination.
  • the resource for sending feedback information in steps S503-S504 is usually resource pool configuration or preconfigured, for example, on the PRB (for example, PRB1) of the symbol where the PSFCH is located (for example, symbol 13 on slot 1) to the first The terminal device sends feedback information.
  • the resources for sending feedback information in steps S505-S506 include two symbols, which is mainly suitable for the first terminal device with strong AGC processing capability.
  • the second terminal device uses two symbols (for example, the symbol of time slot 1 Different frequency domain positions (for example, PRB m of symbol 12 and PRB n of symbol 13) on symbol 12 and symbol 13) send feedback information to the first terminal device.
  • This feedback method can reduce the impact of frequency selective fading and improve HARQ feedback. reliability, thereby ensuring system transmission performance.
  • the second terminal device determines the fifth resource.
  • the fifth resource is located in the first sub-time unit and the second sub-time unit on the fourth time unit, and the frequency domain position of the fifth resource on the first sub-time unit is consistent with the fifth resource on the second sub-time unit.
  • the frequency domain positions are different.
  • each sub-time unit may be a complete symbol, or may include parts of two adjacent symbols (for example, the second half of the previous symbol and the first half of the next symbol), etc.
  • the first sub-time unit and the second sub-time unit on the fourth time unit are used to feedback the reception status of data sent on L time units before the fourth time unit;
  • the frequency domain position of the fifth resource on the first sub-time unit satisfies: [(i+j ⁇ L) ⁇ M set ,(i+1+j ⁇ L) ⁇ M set -1]; (1)
  • the sub-frequency domain unit index of the fifth resource on the first sub-time unit is within the above-mentioned index range, for example, the sub-frequency domain unit is PRB or RB;
  • the frequency domain position of the fifth resource on the second sub-time unit satisfies: [(i+j ⁇ L+Q)mod(N ⁇ L) ⁇ M set ,(i+1+j ⁇ L+Q)mod(N ⁇ L)) ⁇ M set -1];
  • Q is an integer and 0 ⁇ Q ⁇ N*L.
  • Q N ⁇ L/2, then formula (2) can be replaced by: [(i+j ⁇ L+N ⁇ L/2)mod(N ⁇ L) ⁇ M set ,(i+1+j ⁇ L+N ⁇ L/2)mod(N ⁇ L)) ⁇ M set - 1]; (3)
  • the sub-frequency domain unit index of the fifth resource on the second sub-time unit is within the above-mentioned index range, for example, the sub-frequency domain unit is PRB or RB;
  • M set is the number of sub-frequency domain units in the sub-frequency domain unit set where the frequency domain position of the fifth resource on the first sub-time unit or the second sub-time unit is located, and each sub-frequency domain unit set contains One or more sub-frequency domain units
  • N is the number of frequency domain units on each time unit in the L time units
  • i is the index of the time unit where the side row information is located in the L time units
  • j is the side unit.
  • the index of the frequency domain unit where the row information is located among the N frequency domain units.
  • Q is the cyclic shift of the set of sub-frequency domain units where the frequency domain position of the fifth resource on the first sub-time unit and the second sub-time unit is located.
  • Q is an integer greater than 0 and less than N ⁇ L
  • i is an integer and 0 ⁇ i ⁇ L
  • j is an integer and 0 ⁇ j ⁇ N
  • L is an integer greater than or equal to 1
  • N is greater than or equal to an integer of 1.
  • Q represents the set of sub-frequency domain units where the frequency domain position of the fifth resource on the first sub-time unit is located, compared with the sub-frequency domain where the frequency domain position of the fifth resource on the second sub-time unit is located.
  • the set of frequency domain units is different, so as to ensure that feedback information is transmitted under frequency hopping, reduce the impact of frequency selective fading, and improve feedback reliability.
  • the numbers of M set , L, and N are (pre)configured by the resource pool, and this application does not specifically limit this.
  • the second terminal device sends the second feedback information to the first terminal device on the fifth resource
  • the first terminal device receives the second feedback information from the second terminal device on the fifth resource.
  • the second feedback information is used to feed back the reception status of the sidelink information.
  • the second terminal device transmits the second feedback information by frequency hopping between two PSFCH symbols (eg, symbol 1 and symbol 2), wherein symbol 1 is located before symbol 2 in the time domain.
  • the PSFCH resource period is 4, that is, there is a PSFCH resource in 1 time slot out of every 4 time slots, that is, there are PSFCH resources in time slot 2 and time slot 6.
  • the resources that can be used to transmit PSSCH in time slots 1 to 4 are numbered PSSCH1 to PSSCH12 in the order of time domain first and then frequency domain respectively.
  • PSSCH1 to PSSCH12 in time slot 1 to time slot 4 can also be numbered in the order of frequency domain first and then time domain, which is not specifically limited in this application.
  • the last two symbols of time slot 6 are equally divided into 12 PRB sets, numbered 1 to 12 respectively, and are associated with PSSCH1 to PSSCH12 in sequence.
  • Each PRB set includes M set PRBs.
  • the second terminal device can send second feedback information to the first terminal device on the PSFCH resource where number 7 of symbol 1 in time slot 6 and number 7 on symbol 2 are located to indicate sidelink information. Whether the reception is successful.
  • the second terminal device can send HARQ feedback to the first terminal device at different frequency domain positions in two sub-time units, which can reduce the impact of frequency selective fading and improve feedback reliability.
  • the AGC processing time is set according to the AGC processing capabilities of different UEs, and the time slot structure is reconfigured.
  • this method can reduce system overhead and improve spectrum utilization, while maintaining compatibility with UEs with lower AGC processing capabilities.
  • this method can improve the flexibility of symbol configuration.
  • the second terminal device can transmit the second feedback information through frequency hopping, thereby improving the reliability of HARQ feedback.
  • the above-mentioned time slots with PSFCH and time slots without PSFCH can be used in combination or separately. That is to say, the first resource, the second resource, the third resource, the fourth resource and the fifth resource can be located in the same time unit, or they can be located in different time units. In other words, the first resource and the second resource can use this resource.
  • the application technical solution is determined, and the third resource, fourth resource and fifth resource can be determined using existing technical solutions, etc. This application does not limit this.
  • the configuration of the time unit with PSFCH and the time unit without PSFCH disclosed in the above technical solution of the present application can be resource pool configuration or pre-configured. At the same time, the present application determines whether there is data transmission or not in the time unit. There is no specific limit on whether feedback information is sent.
  • the communication method embodiment of the present application is described in detail above with reference to FIGS. 1 to 10 .
  • the communication device side embodiment of the present application will be described in detail with reference to FIGS. 11 and 12 . It should be understood that the description of the device embodiments corresponds to the description of the method embodiments. Therefore, the parts not described in detail can be referred to the previous method embodiments.
  • FIG11 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application.
  • the device 1000 may include a transceiver unit 1010 and a processing unit 1020.
  • the transceiver unit 1010 may communicate with the outside, the processing unit 1020 is used for data processing, and the transceiver unit 1010 may also be referred to as a communication interface or a transceiver unit.
  • the apparatus 1000 can implement steps or processes corresponding to those performed by the first terminal device (for example, sending UEl) in the above method embodiment, wherein the processing unit 1020 is used to perform the above method implementation.
  • the transceiver unit 1010 is configured to perform the transceiver-related operations of the first terminal device in the above method embodiment.
  • the apparatus 1000 can implement steps or processes corresponding to those performed by the second terminal device (for example, receiving UE2) in the above method embodiment, wherein the processing unit 1020 is used to perform the above method.
  • the transceiver unit 1010 is configured to perform operations related to the processing of the second terminal device in the above method embodiment.
  • the device 1000 here is embodied in the form of a functional unit.
  • the term "unit” as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor, or a group of processors) used to execute one or more software or firmware programs. processor, etc.) and memory, merged logic circuitry, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • processor such as a shared processor, a proprietary processor, or a group of processors
  • memory merged logic circuitry, and/or other suitable components to support the described functionality.
  • the device 1000 can be specifically the sending end in the above embodiment, and can be used to perform various processes and/or steps corresponding to the sending end in the above method embodiment, or, The device 1000 may be specifically a receiving end in the above embodiments, and may be used to perform various processes and/or steps corresponding to the receiving end in the above method embodiments. To avoid duplication, they will not be described again here.
  • the device 1000 of each of the above solutions has the function of realizing the corresponding steps performed by the sending end in the above method, or the device 1000 of each of the above solutions has the function of realizing the corresponding steps of the receiving end of the above method.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiving unit. (machine replacement), other units, such as processing units, etc., can be replaced by processors to respectively perform the sending and receiving operations and related processing operations in each method embodiment.
  • the above-mentioned transceiver unit may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.
  • the device in Figure 11 may be the receiving end or transmitting end in the aforementioned embodiment, or it may be a chip or a chip system, such as a system on chip (SoC).
  • SoC system on chip
  • the transceiver unit may be an input-output circuit or a communication interface.
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip. No limitation is made here.
  • Figure 12 shows a communication device 2000 provided by an embodiment of the present application.
  • the device 2000 includes a processor 2010 and a transceiver 2020.
  • the processor 2010 and the transceiver 2020 communicate with each other through an internal connection path, and the processor 2010 is used to execute instructions to control the transceiver 2020 to send signals and/or receive signals.
  • the device 2000 may also include a memory 2030, which communicates with the processor 2010 and the transceiver 2020 through Internal connection paths communicate with each other.
  • the memory 2030 is used to store instructions, and the processor 2010 can execute the instructions stored in the memory 2030.
  • the apparatus 2000 is used to implement various processes and steps corresponding to the first terminal device (eg, sending UE1) in the above method embodiment.
  • the first terminal device eg, sending UE1
  • the apparatus 2000 is used to implement the various processes and steps corresponding to the second terminal device (eg, receiving UE2) in the above method embodiment.
  • the second terminal device eg, receiving UE2
  • the device 2000 may be specifically the sending end or the receiving end in the above embodiment, or may be a chip or a chip system.
  • the transceiver 2020 may be the transceiver circuit of the chip, which is not limited here.
  • the device 2000 can be used to perform various steps and/or processes corresponding to the sending end or the receiving end in the above method embodiments.
  • the memory 2030 may include read-only memory and random access memory and provide instructions and data to the processor.
  • a portion of the memory may also include non-volatile random access memory.
  • the memory may also store device type information.
  • the processor 2010 can be used to execute instructions stored in the memory, and when the processor 2010 executes the instructions stored in the memory, the processor 2010 is used to execute various steps of the above method embodiment corresponding to the sending end or the receiving end. and/or process.
  • each step of the above method can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.
  • the processor in the embodiment of the present application can implement or execute the various methods, steps and logical block diagrams disclosed in the embodiment of the present application.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • FIG 13 is a schematic block diagram of a chip system 3000 provided by an embodiment of the present application.
  • the chip system 3000 (or can also be called a processing system) includes a logic circuit 3010 and an input/output interface (input/output interface) 3020.
  • the logic circuit 3010 may be a processing circuit in the chip system 3000.
  • the logic circuit 3010 can be coupled to the memory unit and call instructions in the memory unit, so that the chip system 3000 can implement the methods and functions of various embodiments of the present application.
  • the input/output interface 3020 can be an input/output circuit in the chip system 3000, which outputs information processed by the chip system 3000, or inputs data or signaling information to be processed into the chip system 3000 for processing.
  • the chip system 3000 is used to implement the operations performed by the terminal device in each of the above method embodiments.
  • the logic circuit 3010 is used to implement the processing-related operations performed by the first terminal device in the above method embodiment, such as the processing-related operations performed by the first terminal device in the embodiment shown in Figure 5; input/output interface 3020 Used to implement the above method embodiments
  • the sending and/or receiving related operations performed by the first terminal device are the sending and/or receiving related operations performed by the first terminal device in the embodiment shown in FIG. 5 .
  • the logic circuit 3010 is used to implement the processing-related operations performed by the second terminal device in the above method embodiment, such as the processing-related operations performed by the second terminal device in the embodiment shown in Figure 5;
  • the input/output interface 3020 is used to implement the sending and/or receiving-related operations performed by the second terminal device in the above method embodiment, such as the sending and/or receiving-related operations performed by the second terminal device in the embodiment shown in Figure 5.
  • Embodiments of the present application also provide a computer-readable storage medium on which are stored computer instructions for implementing the methods executed by a terminal device (such as a first terminal device or a second terminal device) in each of the above method embodiments.
  • a terminal device such as a first terminal device or a second terminal device
  • An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device (such as a first terminal device or a second terminal device) in the above-mentioned method embodiments.
  • a terminal device such as a first terminal device or a second terminal device
  • An embodiment of the present application also provides a communication system, which includes the first terminal device and the second terminal device in the above embodiments.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or device, etc.) to perform 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 that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

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Abstract

本申请实施例提供了一种通信方法和装置，应用于侧行链路通信系统。该方法包括：第一终端设备根据获取的第二终端设备的自动增益控制AGC处理能力确定第一资源，并在第一资源上向第二终端设备发送侧行信息。根据第二终端设备的AGC处理能力，重新配置时隙结构，不仅降低系统开销，提升资源利用率，同时还能提高符号配置的灵活性。

Description

通信方法和装置
本申请要求于2022年09月23日提交国家知识产权局、申请号为202211181920.9、发明名称为“一种侧行链路时隙结构及通信方法”的中国专利申请的优先权，以及要求于2022年11月14日提交国家知识产权局、申请号为202211419297.6、发明名称为“通信方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法和装置。
背景技术
当前，侧行链路(sidelink，SL)通信可以支持终端设备之间的直接通信，即用户数据直接在终端设备之间传输，避免了蜂窝通信中用户数据需要经过网络进行中转传输，可以降低传输时延，并且缓解网络负载。
示例性的，在第五代(5th generation，5G)新空口(new radio，NR)SL通信中，时隙是最小的时域资源调度粒度，每个时隙包含14个符号，至少包含1个自动增益控制(automatic gain control，AGC)符号和1个保护间隔(guard period，GP)符号。然而，当前的AGC符号和GP符号的配置可能导致系统开销过大，造成频谱资源的不必要浪费，或者降低系统传输性能等。
因此，如何设计更有效的符号配置是亟待解决的问题。
发明内容
本申请提供一种通信方法和装置，能够降低系统开销，保证符号配置的灵活性，提高系统传输性能。
第一方面，提供了一种通信方法，该方法可以由第一终端设备(例如，发送用户设备(user equipment，UE1))执行，或者，也可以由用于第一终端设备的芯片或电路执行，本申请对此不作限定。为了便于描述，下面以由第一终端设备执行为例进行说明。
该方法包括：第一终端设备获取第一信息，第一信息用于指示第二终端设备的AGC处理能力；第一终端设备根据第一信息，确定第一资源；第一终端设备在第一资源上向第二终端设备发送侧行信息。
根据本申请提供的方案，第一终端设备根据第二终端设备的AGC处理能力，能够确定第二终端设备的AGC处理时间，进而可以设置合理的AGC资源，确定用于传输侧行信息的第一资源。相比于现有的符号配置结构，该方案对于AGC处理时间短(高能力)的第二终端设备来说，可以减少系统开销，避免频谱资源的不必要浪费，提升系统传输性能等，同时保持与低能力的第二终端设备的兼容性；对于AGC处理时间较长(低能力)的第二终端设备来说，可以提供相对灵活的符号配置结构，满足不同的传输需求等。
结合第一方面，在第一方面的某些实现方式中，第一终端设备获取第一信息，包括：第一终端设备接收来自第二终端设备的第一信息。
结合第一方面，在第一方面的某些实现方式中，第一终端设备向第二终端设备发送第一指示信息，第一指示信息用于指示第二终端设备进行AGC的第二资源，第二资源是根据第一信息确定的；或者，第一指示信息用于指示第一资源。
基于上述方案，通过第一终端设备向第二终端设备指示第一资源或第二资源，有利于第二终端设备可以快速有效地确定侧行信息占用的资源，进而检测并获取侧行信息，提升传输性能。
结合第一方面，在第一方面的某些实现方式中，第一指示信息承载在物理侧行控制信道(physical sidelink control channel，PSCCH)中，或物理侧行共享信道(physical sidelink shared channel，PSSCH)中。
结合第一方面，在第一方面的某些实现方式中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；其中，PSCCH的时域资源的起始位置位于PSCCH所在时间单元的第三个符号。
示例性的，PSCCH所在时间单元可以是第一时间单元，也可以位于第一时间单元之前。基于该实现方式，第二终端设备可以及时解码并获取PSSCH，提升传输效率。
结合第一方面，在第一方面的某些实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，用于第二终端设备进行AGC的第二资源的时域资源位于第一时间单元中的第一个符号的第二部分；或者，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第三个符号，第二资源的时域资源位于第一时间单元中的第一个符号的第二部分，以及第一时间单元中的第二个符号；其中，第一个符号在时域上位于第二个符号之前，第二个符号在时域上位于第三个符号之前。
基于上述方案，根据第二终端设备的不同AGC处理能力，设计不同的时间单元结构。对于高处理能力的第二终端设备来说，可以减少AGC占用的资源，增加数据传输可用的资源，提升资源利用率；对于低处理能力的第二终端设备来说，可以提升符号配置的灵活性。
结合第一方面，在第一方面的某些实现方式中，第一时间单元的第一个符号包括第一部分和第二部分，第一个符号的第一部分为空，且第一个符号的第一部分在时域上位于第一个符号的第二部分之前。
结合第一方面，在第一方面的某些实现方式中，第一终端设备在第三资源上接收来自第二终端设备的第一反馈信息，第一反馈信息承载在物理侧行反馈信道(physical sidelink feedback channel，PSFCH)中，第三资源是根据第二信息确定的，第二信息用于指示第一终端设备的AGC处理能力。
结合第一方面，在第一方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第二时间单元的倒数第二个符号，以及第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元中的倒数第三个符号的第二部分；或者，第二信息包括第二值，第三资源的时域资源位于第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元的倒数第三个符号的第二部分，以及第二时间单元的倒数第二个符号，第四资源用于第一终端设备进行AGC；其中，第二时间单元的倒数第三个符号包括第一部分和第二部分，倒数第三个符号的第一部分为空，第二时间单元与第一时间单元相同，或者，第二时间单元在时域上位于第一时间单元之后。
需要说明的是，每个符号中的第一部分的时长可以相同，也可以不相同。类似地，每个符号中的第二部分的时长可以相同，也可以不相同，本申请对此不作具体限定
结合第一方面，在第一方面的某些实现方式中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；其中，PSCCH占用的时域资源的起始位置位于PSCCH所在时间单元的第二个符号。
结合第一方面，在第一方面的某些实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，用于第二终端设备进行AGC的第二资源的时域资源位于第一时间单元中的第一个符号的第一部分；或者，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号；其中，第一个符号在时域上位于第二个符号之前，第一个符号的第一部分在时域上位于第一个符号的第二部分之前。
结合第一方面，在第一方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分；其中，第三时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第一终端设备在第三资源上接收来自第二终端设备的第一反馈信息，第一反馈信息承载在PSFCH中，第三资源是根据第二信息确定的，第二信息用于指示第一终端设备的AGC处理能力。
结合第一方面，在第一方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号的第一部分；其中，第三时间单元的倒数第四个符号包括第一部分和第二部分，倒数第四个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第三资源的时域资源位于第四时间单元的倒数第二个符号，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号为空符号，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第三个符号中的第二部分、第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第一部分；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号；其中，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，第四资源用于第一终端设备进行AGC；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号的第二部分，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，以及第四时间单元的倒数第二个符号的第一部分；其中，第四时间单元的倒数第三个符号包括第二部分和第一部分，以及第四时间单元的最后一个符号包括第一部分和第二部分，第四时间单元的倒数第三个符号的第一部分，以及第四时间单元的最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第一方面，在第一方面的某些实现方式中，第一终端设备在第五资源上接收来自第二终端设备的第二反馈信息，第二反馈信息用于反馈侧行信息的接收情况；其中，第五资源位于第四时间单元上的第一子时间单元和第二子时间单元，且第五资源在第一子时间单元上的频域位置与第五资源在第二子时间单元上的频域位置不同。
结合第一方面，在第一方面的某些实现方式中，第四时间单元上的第一子时间单元和第二子时间单元用于反馈位于第四时间单元之前的L个时间单元上发送的数据的接收情况；
第五资源在第一子时间单元上的频域位置满足：
[(i+j·L)·Mset,(i+1+j·L)·Mset-1]；
第五资源在第二子时间单元上的频域位置满足：
[(i+j·L+Q)mod(N·L)·Mset,(i+1+j·L+Q)mod(N·L))·Mset-1]；
其中，Mset为第五资源在第一子时间单元或第二子时间单元上的频域位置所在的子频域单元集合中的子频域单元的个数，N为L个时间单元中的每个时间单元上的频域单元的个数，i为侧行信息所在的时间单元在L个时间单元中的索引，Q为第五资源在第一子时间单元与第二子时间单元上的频域位置所在的子频域单元集合的循环移位偏移量，Q为大于0且小于N·L的整数，j为侧行信息所在的频域单元在N个频域单元中的索引，i为大于或等于零且小于或等于L-1的整数，j为大于或等于零且小于或等于N-1的整数，L和N为正整数。
基于上述方案，针对高AGC处理能力的UE来说，通过建立PSSCH资源与PSFCH资源之间的映射关系，实现第二终端设备可以跳频传输第二反馈信息，从而提升混合自动重传请求(hybrid automatic repeat request，HARQ)反馈的可靠性。
第二方面，提供了一种通信方法，该方法可以由第二终端设备(例如，接收UE2)执行，或者，也可以由用于第二终端设备的芯片或电路执行，本申请对此不作限定。为了便于描述，下面以由第二终端设备执行为例进行说明。
该方法包括：第二终端设备向第一终端设备发送第一信息，第一信息用于指示第二终端设备的AGC处理能力；第二终端设备在第一资源上接收来自第一终端设备的侧行信息，第一资源是根据第一信息确定的。
根据本申请提供的方案，第二终端设备向第一终端设备发送第一信息，便于第一终端设备根据第二终端设备的AGC处理能力，能够确定第二终端设备的AGC处理时间，进而可以设置合理的AGC资源，确定用于传输侧行信息的第一资源。相比于现有的符号配置结构，该方案对于AGC处理时间短(高能力)的第二终端设备来说，可以减少系统开销，避免频谱资源的不必要浪费，提升系统传输性能等，同时保持与低能力的第二终端设备的兼容性；对于AGC处理时间较长(低能力)的第二终端设备来说，可以提供相对灵活的符号配置结构，满足不同的传输需求等。
结合第二方面，在第二方面的某些实现方式中，第二终端设备接收来自第一终端设备的第一指示信息，第一指示信息用于指示第二终端设备进行AGC的第二资源，第二资源是根据第一信息确定的；或者，第一指示信息用于指示第一资源。
基于上述方案，通过第一终端设备向第二终端设备指示第一资源或第二资源，有利于第二终端设备可以快速有效地确定侧行信息占用的资源，进而检测并获取侧行信息，提升传输性能。
结合第二方面，在第二方面的某些实现方式中，第一指示信息承载在PSCCH中，或PSSCH。
结合第二方面，在第二方面的某些实现方式中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；其中，PSCCH的时域资源的起始位置位于PSCCH所在时间单元的第三个符号。
结合第二方面，在第二方面的某些实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，用于第二终端设备进行AGC的第二资源的时域资源位于第一时间单元中的第一个符号的第二部分；或者，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第三个符号，第二资源的时域资源位于第一时间单元中的第一个符号的第二部分，以及第一时间单元中的第二个符号；其中，第一个符号在时域上位于第二个符号之前，第二个符号在时域上位于第三个符号之前。
结合第二方面，在第二方面的某些实现方式中，第一时间单元的第一个符号包括第一部分和第二部分，第一个符号的第一部分为空，且第一个符号的第一部分在时域上位于第一个符号的第二部分之前。
结合第二方面，在第二方面的某些实现方式中，第二终端设备在第三资源上向第一终端设备发送第一反馈信息，第一反馈信息承载在PSFCH中，第三资源是根据第二信息确定的，第二信息用于指示第一终端设备的AGC处理能力。
结合第二方面，在第二方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第二时间单元的倒数第二个符号，以及第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元中的倒数第三个符号的第二部分；或者，第二信息包括第二值，第三资源的时域资源位于第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元的倒数第三个符号的第二部分，以及第二时间单元的倒数第二个符号，第四资源用于第一终端设备进行AGC；其中，第二时间单元的倒数第三个符号包括第一部分和第二部分，倒数第三个符号的第一部分为空，第二时间单元与第一时间单元相同，或者，第二时间单元在时域上位于第一时间单元之后。
结合第二方面，在第二方面的某些实现方式中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；其中，PSCCH占用的时域资源的起始位置位于PSCCH所在时间单元的第二个符号。
结合第二方面，在第二方面的某些实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，用于第二终端设备进行AGC的第二资源的时域 资源位于第一时间单元中的第一个符号的第一部分；或者，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号；其中，第一个符号在时域上位于第二个符号之前，第一个符号的第一部分在时域上位于第一个符号的第二部分之前。
结合第二方面，在第二方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分；其中，第三时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第二终端设备在第三资源上向第一终端设备发送第一反馈信息，第一反馈信息承载在PSFCH中，第三资源是根据第二信息确定的，第二信息用于指示第一终端设备的AGC处理能力。
结合第二方面，在第二方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号的第一部分；其中，第三时间单元的倒数第四个符号包括第一部分和第二部分，倒数第四个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第三资源的时域资源位于第四时间单元的倒数第二个符号，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号为空符号，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第三个符号中的第二部分、第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第一部分；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号；其中，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，第四资源用于第一终端设备进行AGC；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号的第二部分，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，以及第四时间单元的倒数第二个符号的第一部分；其中，第四时间单元的倒数第三个符号包括第二部分和第一部分，以及第四时间单元的最后一个符号包括第一部分和第二部分，第四时间单元的倒数第三个符号的第一部分，以及第四时间单元的最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第二方面，在第二方面的某些实现方式中，第二终端设备在第五资源上向第一终端设备发送第二反馈信息，第二反馈信息用于反馈侧行信息的接收情况；其中，第五资源位于第四时间单元上的第一子时间单元和第二子时间单元，且第五资源在第一子时间单元上的频域位置与第五资源在第二子时间单元上的频域位置不同。
结合第二方面，在第二方面的某些实现方式中，第四时间单元上的第一子时间单元和第二子时间单元用于反馈位于第四时间单元之前的L个时间单元上发送的数据的接收情况，
第五资源在第一子时间单元上的频域位置满足：
[(i+j·L)·Mset,(i+1+j·L)·Mset-1]；
第五资源在第二子时间单元上的频域位置满足：
[(i+j·L+Q)mod(N·L)·Mset,(i+1+j·L+Q)mod(N·L))·Mset-1]；
其中，Mset为第五资源在第一子时间单元或第二子时间单元上的频域位置所在的子频域单元集合中的子频域单元的个数，N为L个时间单元中的每个时间单元上的频域单元的个数，i为侧行信息所在的时间单元在L个时间单元中的索引，j为侧行信息所在的频域单元在N个频域单元中的索引，Q为第五资源在第一子时间单元与第二子时间单元上的频域位置所在的子频域单元集合的循环移位偏移量，Q为大于0且小于N·L的整数，i为大于或等于零且小于或等于L-1的整数，j为大于或等于零且小于或等于L-1的整数，L和N为正整数。
基于上述方案，针对高AGC处理能力的UE来说，通过建立PSSCH资源与PSFCH资源之间的映射关系，实现第二终端设备可以跳频传输第二反馈信息，从而提升HARQ反馈的可靠性。
第三方面，提供了一种通信方法，该方法可以由第二终端设备执行，或者，也可以由用于第二终端设备的芯片或电路执行，本申请对此不作限定。为了便于描述，下面以由第二终端设备执行为例进行说明。
该方法包括：第二终端设备在第三资源上向第一终端设备发送第一反馈信息，第三资源是根据第二信息确定的，第二信息用于指示第一终端设备的AGC处理能力。
结合第三方面，在第三方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第二时间单元的倒数第二个符号，以及第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元中的倒数第三个符号的第二部分；或者，第二信息包括第二值，第三资源的时域资源位于第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元的倒数第三个符号的第二部分，以及第二时间单元的倒数第二个符号，第四资源用于第一终端设备进行AGC；其中，第二时间单元的倒数第三个符号包括第一部分和第二部分，倒数第三个符号的第一部分为空，第二时间单元与第一时间单元相同，或者，第二时间单元在时域上位于第一时间单元之后。
结合第三方面，在第三方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号的第一部分；其中，第三时间单元的倒数第四个符号包括第一部分和第二部分，倒数第四个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第三方面，在第三方面的某些实现方式中，第三资源的时域资源位于第四时间单元的倒数第二个符号，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号为空符号，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第三方面，在第三方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第三个符号中的第二部分、第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第一部分；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号，第四资源用于第一终端设备进行AGC；其中，第四时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
结合第三方面，在第三方面的某些实现方式中，第一资源的时域资源的结束位置位于第三时间单元中的倒数第四个符号；其中，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
结合第三方面，在第三方面的某些实现方式中，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，第四资源用于第一终端设备进行AGC；或者，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号的第二部分，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，以及第四时间单元的倒数第二个符号的第一部分；其中，第四时间单元的倒数第三个符号包 括第二部分和第一部分，以及第四时间单元的最后一个符号包括第一部分和第二部分，第四时间单元的倒数第三个符号的第一部分，以及第四时间单元的最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
第四方面，提供了一种通信装置，包括：处理单元，用于获取第一信息，第一信息用于指示第二终端设备的AGC处理能力；处理单元，还用于根据第一信息，确定第一资源；收发单元，用于在第一资源上向第二终端设备发送侧行信息。
该收发单元可以执行前述第一方面中的接收和发送的处理，处理单元可以执行前述第一方面中除了接收和发送之外的其他处理。
第五方面，提供了一种通信装置，包括：处理单元，用于获取第一信息，第一信息用于指示第二终端设备的AGC处理能力；收发单元，用于向第一终端设备发送第一信息，第一信息用于指示第二终端设备的AGC处理能力；收发单元，还用于在第一资源上接收来自第一终端设备的侧行信息，第一资源是根据第一信息确定的。
该收发单元可以执行前述第二方面中的接收和发送的处理，处理单元可以执行前述第二方面中除了接收和发送之外的其他处理。
第六方面，提供了一种通信装置，包括：处理单元，用于第二终端设备获取第二信息，第二信息用于指示第一终端设备的AGC处理能力；处理单元，还用于根据第二信息确定第三资源；收发单元，用于在第三资源上向第一终端设备发送第一反馈信息。
该收发单元可以执行前述第三方面中的接收和发送的处理，处理单元可以执行前述第三方面中除了接收和发送之外的其他处理。
第七方面，提供了一种通信装置，包括收发器、处理器和存储器，该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信装置执行上述第一方面至第三方面中任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选地，该通信装置还包括，发射机(发射器)和接收机(接收器)。
第八方面，提供了一种通信系统，包括网络设备、第一终端设备和至少一个第二终端设备。
第九方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序或代码，所述计算机程序或代码在计算机上运行时，使得所述计算机执行上述第一方面至第三方面中任一种可能实现方式中的方法。
第十方面，提供了一种芯片，包括至少一个处理器，所述至少一个处理器与存储器耦合，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得安装有该芯片系统的装置执行上述第一方面至第三方面中任一种可能实现方式中的方法。
其中，该芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
第十一方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被装置运行时，使得所述装置执行上述第一方面至第三方面中任一种可能实现方式中的方法。
附图说明
图1和图2是适用于本申请实施例的无线通信系统的示意图。
图3是SL时隙结构的示意图。
图4是SL微时隙结构的示意图。
图5是本申请实施例提供的通信方法500的流程示意图。
图6是本申请实施例提供的SL时隙结构的示意图。
图7是本申请实施例提供的针对不同AGC处理能力的SL时隙结构的示意图。
图8是本申请实施例提供的无PSFCH资源的SL时隙结构的示意图。
图9是本申请实施例提供的有PSFCH资源的SL时隙结构的示意图
图10是本申请实施例提供的PSFCH资源与PSSCH资源的映射关系的示意图。
图11是本申请实施例提供的通信装置1000的结构示意图。
图12是本申请实施例提供的通信装置2000的结构示意图。
图13是本申请实施例提供的芯片系统3000的结构示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请提供的技术方案可以应用于各种通信系统，例如：5G或NR系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统等。本申请提供的技术方案还可以应用于未来的通信系统，如第六代(6th generation，6G)移动通信系统。本申请提供的技术方案还可以应用于设备到设备(device to device，D2D)通信，车到万物(vehicle-to-everything，V2X)通信，机器到机器(machine to machine，M2M)通信，机器类型通信(machine type communication，MTC)，以及物联网(internet of things，IoT)通信系统或者其他通信系统。
作为示例，V2X通信可以包括：车与车(vehicle-to-vehicle，V2V)通信、车与路侧基础设施(vehicle-to-infrastructure，V2I)通信、车与行人(vehicle-to-pedestrian，V2P)通信、车与网络(vehicle-to-network，V2N)通信。V2V指的是车辆间的通信。V2P指的是车辆与人(包括行人、骑自行车的人、司机、或乘客等)的通信。V2I指的是车辆与基础设施的通信，基础设施例如路侧单元(road side unit，RSU)或者网络设备。其中，RSU包括两种类型：终端类型的RSU，由于布在路边，该终端类型的RSU处于非移动状态，不需要考虑移动性；基站类型的RSU，可以给与之通信的车辆提供定时同步及资源调度。V2N指的是车辆与网络设备的通信。可以理解，上述为示例性说明，本申请实施例不予限性。例如，V2X还可包括目前3GPP的Rel-16及后续版本的基于NR系统的V2X通信等。
本申请实施例中的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。
终端设备可以是一种向用户提供语音/数据的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
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。
本申请实施例中，用于实现终端设备的功能的装置，即终端设备，可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统或芯片，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备也可以称为接入网设 备或无线接入网设备，如网络设备可以是基站。本申请实施例中的网络设备可以是指将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)。基站可以广义的覆盖如下中的各种名称，或与如下名称进行替换，比如：节点B(NodeB)、演进型基站(evolved NodeB，eNB)、下一代基站(next generation NodeB，gNB)、中继站、接入点、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、主站、辅站、多制式无线(motor slide retainer，MSR)节点、家庭基站、网络控制器、接入节点、无线节点、接入点(access point，AP)、传输节点、收发节点、基带单元(baseband unit，BBU)、射频拉远单元(remote radio unit，RRU)、有源天线单元(active antenna unit，AAU)、射频头(remote radio head，RRH)、中心单元(central unit，CU)、分布式单元(distributed unit，DU)、定位节点等。基站可以是宏基站、微基站、中继节点、施主节点或类似物，或其组合。基站还可以指用于设置于前述设备或装置内的通信模块、调制解调器或芯片。基站还可以是移动交换中心以及D2D、V2X、M2M通信中承担基站功能的设备、6G网络中的网络侧设备、未来的通信系统中承担基站功能的设备等。基站可以支持相同或不同接入技术的网络。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
基站可以是固定的，也可以是移动的。例如，直升机或无人机可以被配置成充当移动基站，一个或多个小区可以根据该移动基站的位置移动。在其他示例中，直升机或无人机可以被配置成用作与另一基站通信的设备。
在一些部署中，本申请实施例所提及的网络设备可以为包括CU、或DU、或包括CU和DU的设备、或者控制面CU节点(中央单元控制面(central unit-control plane，CU-CP))和用户面CU节点(中央单元用户面(central unit-user plane，CU-UP))以及DU节点的设备。
本申请实施例中，用于实现网络设备的功能的装置，可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统或芯片，该装置可以被安装在网络设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请实施例中对网络设备和终端设备所处的场景不做限定。
下面，结合图1和图2简单介绍适用于本申请实施例的通信系统。
图1和图2是适用于本申请实施例的无线通信系统的一示意图。如图1和图2所示，该无线通信系统可以包括至少一个终端设备，如图所示的UE1、UE2、UE3、UE4、UE5。可选地，该无线通信系统还可以包括至少一个网络设备，如图所示的网络设备。
网络设备和终端设备之间可进行通信。如网络设备和终端设备之间可通过Uu接口进行通信，网络设备和终端设备之间通信的链路(link)可记为Uu链路。如图1的(a)或图2的(a)所示，网络设备和UE1之间可直接通信，如图1的(b)或图2的(b)所示，网络设备和UE1之间也可通过UE2进行通信；类似地，网络设备和UE2之间可直接通信，网络设备和UE2之间也可通过UE1进行通信。可以理解，其中，Uu链路表征了终端设备和网络设备间的一种连接关系，是一个逻辑概念，而非一个物理实体。主链路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定。
终端设备和终端设备之间也可进行通信。例如，终端设备和终端设备之间可以直接通信，如图1的(a)至图1的(c)、图2的(a)至图2的(c)所示，UE1和UE2之间可以直接通信。再例如，终端设备和终端设备之间可以通过其他设备，如网络设备或终端设备，进行通信，如图1的(a)所示，UE1和UE2之间可以通过网络设备进行通信，又如图1的(d)、图2的(d)所示，UE1和UE2之间可以通过UE3进行通信。终端设备和终端设备之间通信的接口可记为基于邻近服务通信5(proximity-based services communication 5，PC5)接口，终端设备与终端设备之间通信的链路可记为侧行链路SL，终端设备与终端设备之间的通信也可记为SL通信。侧行链路，也可称为边链路或副链路等。可以理解，其中，侧行链路表征了终端设备和终端设备间的一种连接关系，是一个逻辑概念，而非一个物理实体。侧行链路仅是为区分做的命名，其具体命名不对本申请的保护范围造成限定。
设备之间可以进行单播通信，如终端设备之间可以进行单播通信。单播是指：一个发送终端和一个接收终端组成一个单播连接对。例如，以图1为例，UE1与UE2之间可以进行单播通信。
设备之间可以进行组播通信，如终端设备之间可以进行组播通信。组播是指：一个发送终端和至少一个接收终端组成一个组播连接对。例如，以图2为例，UE1与UE2、UE4以及UE5之间可以进行 组播通信。如图2的(a)所示，网络设备和UE1之间可直接通信，一个UE1可与多个UE，如UE2、UE4以及UE5之间可以进行组播通信。UE1与多个UE之间进行组播通信时，可以在网络覆盖下进行，如图2的(a)或图2的(b)所示，或者也可以在无网络覆盖下进行，如图2的(c)或图2的(d)所示。可以理解，图2中以UE1与三个UE进行组播通信为例进行了示例性说明，对此不予限制，例如UE1可以与更多数量的UE进行组播通信。
作为示例，终端设备和终端设备之间的SL通信，可以用于车联网或智能交通系统(intelligent transportation system，ITS)，如上文所述的V2X通信中。
可选地，终端设备和终端设备之间的SL通信，可以在网络覆盖下进行，也可以在无网络覆盖下进行。如图1的(a)至图1的(b)、图2的(a)至图2的(b)所示，UE1和其它UE之间可以在网络覆盖下进行通信；或者，如图1的(c)至图1的(d)、图2的(c)至图2的(d)所示，UE1和其它UE之间可以在网络覆盖范围之外(out-of-coverage)进行通信。
可选地，终端设备和终端设备之间SL通信时的配置信息，如终端设备和终端设备之间SL通信时的时频资源可以是网络设备配置或调度的，也可以是终端设备自主选择的，不予限制。
可以理解，图1和图2仅为便于理解而示例的简化示意图，该无线通信系统中还可以包括其他网络设备或者还可以包括其他终端设备，图1和图2中未予以画出。本申请实施例可以适用于发送端设备和接收端设备通信的任何通信场景。
需要说明的是，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备，或者，是终端设备中能够调用程序并执行程序的功能模块。
为便于理解本申请实施例，首先对本申请中涉及到的术语或技术做简单说明。
1、授权频谱和非授权频谱
无线通信系统使用的频谱分为两类，授权频谱(licensed spectrum)和非授权频谱(unlicensed spectrum)。在授权频谱中，UE可基于网络设备的调度使用频谱资源。在非授权频谱中，通信设备可按照竞争的方式使用频谱资源。在非授权频谱上的SL通信可以称为非授权频谱的侧行链路(sidleink unlicense，SL-U)，在非授权频谱上的NR蜂窝通信可以称为NR-U。
SL-U主要是指在非授权频谱(unlicense band)中进行SL传输。针对非授权频谱，标准引入两种接入机制包括Type 1和Type 2。其中，Type 1用于抢占信道的场景，需要进行先听后说(listen-before-talk，LBT)，即在传输之前需要监听。这里的监听可以是能量检测，即在9μs上检测能量，如果超过门限表示有UE占用该资源；反之，如果不超过门限，则意味着没有UE占用该资源。Type 2用于分享其他UE经过Type 1方式抢到的传输资源。例如，UE1用Type 1抢到了一段时间内的传输机会(即信道占用时间(channel occupancy time，COT))，除了自己占用的传输时间外，可指示其他UE采用Type 2方式接入UE1所占用的COT内剩余的传输机会。进一步地，Type 2包括Type 2A和Type 2B，Type 2A表示在其他UE的传输结束后的间隔25μs后占用信道，即通过感知信道发现25μs内无其他UE使用，则可以占用该信道。Type 2B表示在其他UE的传输结束后的间隔16μs后占用信道，与Type 2A的差别在于9μs，即一个感知时隙的时长。
对于非授权频谱，在传输之前，UE必须在每个20MHz信道上执行LBT，该20MHz的信道即可被称为LBT信道。为了避免不同信道的干扰，UE不能在整个20MHz带宽上发送数据，而是留有一部分频带资源作为保护带宽(guard band)，只在剩余的这部分频域资源发送数据，这部分可用的资源被称作资源块集合(resource block set，RB set)。当UE在连续多个20MHz信道上执行LBT操作并成功接入信道时，两个RB set间的保护带宽可以用来传输数据，提高资源利用率。
2、SL资源池(resouce pool)
在NR中，SL传输是基于资源池进行的。每个资源池包含一个或多个子信道(subchannel)，同一资源池中的各子信道占用的频域资源(即物理资源块(physical resource block，PRB)个数)是相同的，不同资源池的各子信道所占用的频域资源可能不同。
应理解，资源池是一个逻辑上的概念，一个资源池包括多个物理资源，其中任意一个物理资源是用于传输数据的。每个UE在进行数据的传输时都需要从资源池中选择一个资源。这个资源选择的过 程，包括以下两种情况：
(1)UE受到网络设备的控制，根据网络设备的指示信息，从资源池中选择一个资源进行数据传输，又称为Mode 1方式；
(2)UE自主从资源池中选择一个资源进行数据传输，又称为Mode2方式，即UE有自主决定资源选择和资源分配的机会。UE可以根据感知频谱的占用情况，把一些被占用的或者干扰较大的资源排除掉，在空闲或者干扰较低的资源上选择传输资源。
3、资源
资源是指在资源池中的时频资源。数据或信息可以通过时频资源来承载。
在时域上，时频资源可以包括一个或多个时域单元(或者，也可以称为时间单元)。一个时域单元可以是一个符号(symbol)，或者一个迷你时隙(mini-slot)，或者一个时隙(slot)，或者部分时隙(partial slot)，或者一个子帧(subframe)，或者一个无线帧(frame)等。其中，符号是时域符号的简称，也可以称为正交频分多址(orthogonal frequency division multiplexing，OFDM)符号。需要说明的是，时域符号还可以与其他多址方式结合命名，本申请实施例不做限定。针对不同的子载波间隔，时域符号长度可以不同。
在频域上，时频资源可以包括一个或多个频域单元。一个频域单元可以是一个资源单元(resource element，RE)，或者一个资源块(resource block，RB)，或者一个子信道(subchannel)，或者一个子带(subband)，或者一个资源池(resource pool)，或者一个带宽(bandwidth)，或者一个带宽部分(bandwidth part，BWP)，或者一个载波(carrier)，或者一个信道(channel)，或者一个交错(interlace)RB等。
应理解，PSCCH或PSSCH的调度粒度在时域上单位为一个时隙，频域上单位为一个或者多个子信道。发送终端设备可以在该资源上发送侧行信息，在一个资源上可以承载PSCCH、PSSCH、PSFCH三种信道和解调参考信号(demodulation reference signal，DM-RS)、信道状态信息参考信号(channel state information reference signal，CSI-RS)等信号。PSCCH中承载一阶侧行控制信息(sidelink control information，SCI)，PSSCH中承载二阶SCI和/或数据，PSFCH承载反馈信息。其中，PSCCH/PSSCH包括PSCCH和/或PSSCH。
4、GAP符号(或GP符号)、AGC符号
用于收发或发收转换的符号可以称为空符号(GAP符号)。在空符号上，通信设备通常既不发送，也不接收。终端设备可能在连续两个时隙分别接收和发送PSSCH，或者终端设备可能在同一个时隙分别接收和发送PSSCH和PSFCH。因此，在接收PSSCH和发送PSFCH之后，均需要额外增加一个GAP符号，用于终端设备的收发转换。
用于AGC的符号可以称为AGC符号。AGC符号可以用于传输数据，也可以用于传输参考信号。AGC符号位于传输的起始符号，例如PSCCH/PSSCH传输的符号0，例如PSFCH传输的符号11。由于不能同时进行AGC调整和接收、译码数据。因此AGC符号上的信号是下一个符号上的信号内容的复制。由于SL传输保持每个符号上的功率相等，因此可以基于AGC符号的自动增益控制的结果接收剩余符号的内容。
通常来说，AGC符号和GAP符号分别位于子帧(或时隙)的第一个符号和最后一个符号。在SL传输中，由于常常没有基站来做调度和协调，接收端UE无法获知发送端UE的传输功率等信息，因此接收机无法将功率放大器调整到合适的范围，直接进行接收是无法成功解码的。在R16NRV中，每次传输之前都会有一个符号用于AGC，接收端接收第一个符号之后，根据该符号调整功率放大器，以更好地接收后续的传输。但是AGC越多，接收机越复杂、开销越大。
AGC符号具体说明：
根据高层参数sl-StartSymbol和sl-LengthSymbols确定为SL配置或者预配置的符号。sl-StartSymbol指示时隙内为SL配置的首个符号，sl-LengthSymbols指示时隙内为SL配置的符号的个数。其中，sl-StartSymbol是为SL配置的sl-LengthSymbols个连续符号的第一个符号的符号索引。sl-StartSymbol的取值范围为{0,1,2,3,4,5,6,7}的任意一个。sl-LengthSymbols的取值范围为{7,8,9,10,11,12,13,14}的任意一个。SL BWP或者SL资源池内的资源具有相同的sl-StartSymbol和sl-LengthSymbols。
在时隙内，PSSCH和/或PSCCH的资源分配是从符号sl-StartSymbol+1开始的。资源分配还可以 被称为映射(mapping)。PSFCH传输的第2个的符号为sl-StartSymbol+sl-LengthSymbols-2的符号。
AGC符号在协议中被称为复制符号(duplicated symbol，DS)，这是指映射PSSCH的第一个符号上的内容被复制到了这个符号。类似地，映射PSCCH的第一个符号上的内容也被复制到了这个符号。映射PSSCH的第一个符号和映射PSCCH的第一个符号为同一个符号。该第一个符号上的内容包括了PSCCH、PSSCH、DM-RS、相位跟踪参考信号(phase tracking reference signal，PT-RS)或CSI-RS。例如，PSCCH和PSSCH是从符号1开始映射的，该符号1上还映射了DM-RS、PT-RS或CSI-RS中的至少一种，则符号1上的全部资源单元RE都被复制到了符号0的全部RE上。也就是说符号1和符号0是完全一样的。
另外，AGC符号在协议中被称为复制符号，还因为PSFCH传输的第2个符号上的内容被复制到了PSFCH传输的第1个符号上。该PSFCH传输的第1个符号为复制符号，即用于AGC的符号。
在时隙中存在两个AGC符号的情况下，若终端设备从第一AGC符号开始传输SL信息，第一AGC符号可以为复制的PSCCH或PSSCH的第一个符号的内容。终端设备从第二AGC符号开始传输反馈信息，第二AGC符号可以为复制的PSFCH的第一个符号的内容。
在后续的描述中，在不引起歧义的前提下，AGC符号既可以指“PSCCH/PSSCH的AGC符号”也可以指“PSFCH的AGC符号”。若需要区分，则用“PSCCH/PSSCH的AGC符号”或者“PSFCH的AGC符号”来称呼。
5、侧行信息
侧行信息的传输，指终端设备通过资源池中的资源传输侧行信息。资源池中的资源可承载PSCCH、PSSCH、PSFCH，以及DMRS、PT-RS、CSI-RS中的一种或多种侧行信息。其中，LTE中的侧行信息不包括PSFCH。资源池中的资源除了承载侧行信息，还可以用于AGC，或者用于收发或发收转换。
上面对本申请中涉及到的术语做了简单说明，下文实施例中不再赘述。此外，上文关于术语的说明，仅是为便于理解进行的说明，其对本申请实施例的保护范围不造成限定。
在NR SL通信中，发送UE通过PSSCH发送数据，并在SCI中携带用于解码PSSCH中数据的控制信息，SCI可以通过PSCCH发送。为了便于描述，在不做区分时，SCI包括一阶SCI，和/或二阶SCI。一阶SCI通过PSCCH发送，二阶SCI通过PSSCH发送。接收UE通过PSFCH向发送UE发送HARQ反馈，以告知发送UE是否正确接收数据。
示例性的，在循环前缀正交频分复用(cyclic prefix orthogonal frequency division multiplexing,)CP-OFDM)通信系统中，单个OFDM符号上的单个子载波是频域资源的最小单位，称为资源元素RE。PSCCH和PSSCH的调度粒度在时域上单位为时隙，频域上单位为子信道，一个子信道由{10,12,15,20,25,50,75,100}个RB组成，具体值由RRC信令指示或者预配置。一个RB指的是由12个连续的子载波组成的频域资源单位。PSFCH的调度单位为时域上是一个符号，频域上是一个RB。RB还可以称为PRB。
时隙是最小的时域资源调度粒度，每个时隙包含14个符号，其中至少包含1个AGC符号和1个GP符号。为了满足工业互联网等业务的超低时延需求，可能需要在SL中采用微时隙(mini-slot)。为便于理解，下面结合图3和图4，对SL时隙和微时隙的结构进行示意说明。
图3是SL时隙结构的示意图。以资源池的时域资源的单位是时隙，且以承载侧行信息的时域资源为一个时隙为例。如图3的(a)和图3的(b)所示，该时域资源包含14个符号，即符号0～符号13，频域资源包括3个子信道。
在图3的(a)中，该资源包括PSFCH资源，即有额外3个符号(符号11至符号13)的开销。具体为：PSFCH资源占据符号12，符号11为AGC符号，主要用于发送UE调整接收信号放大倍数，符号13为GP符号。另外，符号0为AGC符号，主要用于接收UE调整接收信号放大倍数，符号10为GP符号，主要用于收发转换或发收转换。PSCCH从符号1开始映射，占据符号1至符号3的子信道0，PSSCH占据6个符号(即符号4至符号9)的全部时频资源，以及符号1至符号3的子信道1和子信道2。在图3的(b)中，该资源不包括PSFCH资源。符号0为AGC符号，符号13为GP符号。PSCCH从符号1开始映射，占据符号1至符号3的子信道0，二阶SCI占据符号1至符号3的第2个子信道。PSSCH占据9个符号(即符号4至符号12)的全部时频资源，以及符号1至符号3的子信道1和子信道2。也就是说，PSCCH和PSSCH在时域上的起始位置相同。可选地，一阶SCI可以承载在 PSCCH上，二阶SCI可以承载在PSSCH上。
图4是SL微时隙结构的示意图。以资源池的时域资源的单位是时隙，且以承载侧行信息的时域资源为一个时隙为例。如图4的(a)所示，该时域资源包含14个符号，即符号0～符号13，频域资源包括3个子信道，每个时隙包含2个微时隙。
在图4的(a)中，该资源包括PSFCH资源，即有额外3个符号(符号11至符号13)的开销。其中，微时隙1包括符号0至符号4，微时隙2包括符号5至符号10，符号0、5和11为AGC符号，符号4、10和13为GP符号。符号1至符号3的子信道0，以及符号6至符号8的子信道0用于映射PSCCH。符号1至符号3的子信道1和子信道2，符号6至符号8的子信道1和子信道2，以及符号9的全部资源用于映射PSSCH。符号12用于映射PSFCH。在图4的(b)中，该资源不包括PSFCH资源。微时隙1包括符号0至符号6，微时隙2包括符号7至符号13，符号0和7为AGC符号，符号6和13为GP符号。符号1至符号3的子信道0，以及符号8至符号10的子信道0用于映射PSCCH。符号1至符号3的子信道1和子信道2，符号8至符号10的子信道1和子信道2，以及符号4、5、11和12的全部资源用于映射PSSCH。
基于此，在有PSFCH资源的时隙中，AGC、GP和PSFCH的开销为7/14＝50％(图4的(a))；在无PSFCH资源的时隙中，AGC和GP的开销为4/14＝29％(如图4的(b))。由此可见，当前AGC符号和GP符号的配置造成的系统开销过大，影响资源的使用率，降低系统传输性能。因此，亟需更有效的AGC符号和GP符号的配置方法。
有鉴于此，本申请提供了一种通信方法和装置，根据不同UE的能力设置AGC处理时间，以及重新配置时隙结构。对于高处理能力的UE来说，该方法可以降低系统开销，提升频谱利用率，同时还能保持与处理能力较低的UE的兼容性。对于低处理能力的UE来说，该方法能够提高符号配置的灵活性。
为了便于理解本申请实施例，作出以下几点说明：
第一、在本申请中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
第二、在本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b和c中的至少一项(个)，可以表示：a，或，b，或，c，或，a和b，或，a和c，或，b和c，或，a、b和c。其中a、b和c分别可以是单个，也可以是多个。
第三、在本申请中，“第一”、“第二”以及各种数字编号(例如，#1、#2等)指示为了描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的消息等，而不是用于描述特定的顺序或先后次序。应理解，这样描述的对象在适当情况下可以互换，以便能够描述本申请的实施例以外的方案。
第四、在本申请中，“当……时”、“在……的情况下”以及“如果”等描述均指在某种客观情况下设备会做出相应的处理，并非是限定时间，且也不要求设备在实现时一定要有判断的动作，也不意味着存在其它限定。
第五、在本申请中，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
第六、在本申请中，“用于指示”可以包括用于直接指示和用于间接指示。当描述某一指示信息用于指示A时，可以包括该指示信息直接指示A或间接指示A，而并不代表该指示信息中一定携带有A。
本申请实施例涉及的指示方式应理解为涵盖可以使得待指示方获知待指示信息的各种方法。待指示信息可以作为整体一起发送，也可以分成多个子信息分开发送，而且这些子信息的发送周期和/或发送时机可以相同，也可以不同，本申请对具体的发送方法不作限定。
本申请实施例中的“指示信息”可以是显式指示，即通过信令直接指示，或者根据信令指示的参数， 结合其他规则或结合其他参数或通过推导获得。也可以是隐式指示，即根据规则或关系，或根据其他参数，或推导获得。本申请对此不作具体限定。
第七、在本申请中，“协议”可以是指通信领域的标准协议，例如可以包括5G协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。“预配置”可以包括预先定义。例如，协议定义。其中，“预先定义”可以通过在设备中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。
第八、在本申请中，“存储”可以是指保存在一个或者多个存储器中。所述一个或者多个存储器可以是单独的设置，也可以是集成在编码器或者译码器、处理器、或通信装置中。所述一个或者多个存储器，也可以是一部分单独设置，一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质，本申请并不对此限定。
第九、在本申请中，“通信”还可以描述为“数据传输”、“信息传输”、“数据处理”等。“传输”包括“发送”和“接收”，本申请对此不作限定。
第十、在本申请中，“第一终端设备”可以描述为“UE1”，“第二终端设备”可以描述为“UE2”，以此类推，本申请不再特殊强调。
下文将结合附图详细说明本申请实施例提供的通信方法。本申请提供的实施例可以适用于发送端设备和接收端设备通信的任何通信场景，例如可以应用于上述图1和图2所示的通信系统中。
在5G NR中，频率范围1(frequency range 1，FR1)对应的频率范围是450MHz-6.0GHz，即6GHz以下的频段，最大信道带宽100MHz。频率范围2(frequency range 2，FR2)对应的频率范围是24.25GHz-52.6GHz，即毫米波频段，最大信道带宽400MHz。示例性的，在FR1中，UE进行收发转换或发收转换的时间不超过13μs，UE进行AGC的时间与接收机实现以及参数设置相关。比如，在子载波间隔(subcarrier spacing，SCS)为30kHz的情况下，某些接收机需要超过35μs的时间完成AGC，而某些接收机可以在小于18μs的时间内完成AGC。表1是不同SCS对应的符号时间。
表1
如表1所示，在FR1中，SL系统支持的SCS包括15kHz、30kHz和60kHz。当SCS为15kHz，对应的每个符号时间为71.35μs；当SCS为30kHz，对应的每个符号时间为35.68μs；当SCS为60kHz，对应的每个符号时间为17.84μs；也就是说，当SCS为15kHz和30kHz时，0.5个符号的时长均大于13μs，均可以用于UE进行收发转换或发收转换。因此对于SCS为15kHz和30kHz来说，可以将0.5个符号设置为GP。进一步地，根据不同的UE能力设置AGC时间，即完成时隙结构的设计。当然，本申请技术方案同样适应于SCS为60kHz的时隙结构，具体不做限定。
图5是本申请实施例提供的通信方法500的流程示意图。如图5所示，该方法包括如下多个步骤。
S510，第一终端设备获取第一信息。
其中，第一信息用于指示第二终端设备的AGC处理能力。
可选地，第二终端设备向第一终端设备发送第一信息；对应的，第一终端设备接收来自第二终端设备的第一信息。
可选地，基站向第一终端设备发送第一信息；对应的，第一终端设备接收来自基站的第一信息。
应理解，第二终端设备的AGC处理能力可以理解为：第二终端设备进行AGC的时长。
示例性的，基站可以通过RRC，MAC CE，或者DCI，配置或预配置所述第二终端设备的AGC处理能力。例如，当前通信系统内的终端设备的AGC处理能力包括：处理能力1和处理能力2，具备处理能力1的终端设备处理AGC的时长小于或等于18μs，处理能力2的终端设备处理AGC的时长大于或等于35μs。那么，相对而言，处理能力2的终端设备(也可称为UE2)需要配置更多的AGC资源，处理能力1的终端设备(也可称为UE1)则仅需要配置较少的AGC资源。也就是说，UE1的AGC处理能力强于UE2的AGC处理能力。
需要说明的是，第二终端设备的数量可以是一个或多个，第二终端设备的数量为多个的情况下， 所述第一信息可以包括全部第二终端设备或部分第二终端设备的AGC处理能力，本申请对此不作具体限定。
S520，第一终端设备根据第一信息，确定第一资源。
应理解，根据第二终端设备的不同AGC处理能力，第一终端设备可以确定对应的AGC处理时长，进而可以确定用于传输侧行信息的第一资源。这里的侧行信息可以包括但不限于：PSCCH和/或PSSCH。需要说明的是，如果第二终端设备的数量是多个，第一终端设备可以根据多个第二终端设备中的至少一个第二终端设备的AGC处理能力确定第一资源，例如，在第一终端设备需要同时向多个第二终端设备(例如，UE2和UE3)发送同一数据包的情况下，第一终端设备可以根据AGC处理时间最长的第二终端设备(例如UE3)的AGC处理能力，确定第一资源，该实现方式可以理解为第一终端设备通过组播或广播的方式，在第一资源上同时向UE2和UE3发送同一数据包。再例如，在第一终端设备通过单播的方式分别向多个第二终端设备(例如，UE2和UE3)发送数据包的情况下，第一终端设备可以获知UE2和UE3的AGC处理能力，并分别为UE2和UE3确定第一资源，等。
示例性的，为了便于说明，本申请实施例将用于第一终端设备向第二终端设备发送侧行数据信息和控制信息的资源称为第一资源，可以包括PSSCH资源和/或PSCCH资源；将用于第二终端设备在接收数据信息和控制信息之前进行AGC的资源称为第二资源，将用于第二终端设备向第一终端设备传输第一反馈信息的资源称为第三资源，将用于第一终端设备在接收第一反馈信息之前进行AGC的资源称为第四资源。其中，第二资源是根据第一信息确定的，第三资源是根据第二信息确定的，该第二信息用于指示第一终端设备的AGC处理能力。下面相关部分不再重复赘述。
下面，针对有无PSFCH的时隙的资源确定进行具体说明。
情况一：无PSFCH的时隙
在一种可能的实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号的第二部分。
示例性的，第一值可以是比特“1”，用于指示第二终端设备的AGC处理能力强，即AGC的处理时间较短(例如，处理能力1)。例如，当SCS为30kHz，对应的每个符号时间为35.68μs，“1”指示第二终端设备的AGC处理时长为16μs时，则该第二终端设备可以占用半个符号即可完成AGC。需要说明的是，该实现方式适用于AGC处理能力强的UE。
在另一种可能的实现方式中，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第三个符号，第二资源的时域资源位于第一时间单元中的第一个符号的第二部分，以及第一时间单元中的第二个符号。
示例性的，第二值可以是比特“0”，用于指示第二终端设备的AGC处理能力弱，即AGC的处理时间较长(例如，处理能力2)。例如，当SCS为30kHz，对应的每个符号时间为35.68μs，“0”指示第二终端设备的AGC处理时长为36μs时，则该第二终端设备需要占用多于一个符号才能完成AGC。需要说明的是，该实现方式适用于AGC处理能力弱的UE。
可选地，第一终端设备在第一资源上传输的侧行信息承载于第一时间单元的PSSCH中，则与该PSSCH关联的PSCCH所在时间单元可以是第一时间单元，也可以位于第一时间单元之前。
在上述两种实现方式中，第一个符号在时域上位于第二个符号之前，第二个符号在时域上位于第三个符号之前。第一时间单元的第一个符号包括第一部分和第二部分，第一个符号的第一部分为空，且第一个符号的第一部分在时域上位于第二部分之前。
结合图6所示的SL时隙结构的示意图，以资源池的时域资源的单位为时隙，承载侧行信息的时域资源为一个时隙为例，对时隙结构的配置进行说明。
如图6的(a)所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。即第1个符号中的第一部分设置为GP，比如该第一部分的持续时长大于或等于13μs；第二部分设置为AGC，比如第二部分的持续时长大于或等于18μs。第2个符号用于AGC或者用于映射PSSCH，这取决于第二终端设备(即接收UE)的AGC处理能力。第3个符号至第14个符号用于映射PSSCH进行数据的传输。
其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的，也可以是资源池(预)配置的。可选地，PSCCH占用的时域资源的起始位置位于PSCCH所在时隙的 第三个符号。即第3个符号至第5个符号的部分或全部频域资源还用于映射PSCCH。也就是说，为了降低PSCCH盲检的复杂度，可以将PSCCH从第3个符号开始映射，这样一来，无论第一终端设备(发送UE)是否在第2个符号上传输有效信息(映射PSSCH)，PSCCH的资源位置是固定的，第二终端设备只需要从第3个符号开始盲检PSCCH即可。
可选地，第一终端设备可以向第二终端设备发送SCI，用于指示第2个符号是否映射了PSSCH，使得第二终端设备可以明确是否需要在第2个符号解码PSSCH。
接下来，基于图6的时隙结构，结合图7，对于第二终端设备的不同AGC处理能力的SL时隙结构的配置进行说明。在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs。如图7的(a)所示，对于AGC处理能力2的第二终端设备，至少需要35μs的时间完成AGC，则第一终端设备需要将图6的(a)中第2个符号设置为AGC，比如第2个符号可以是第3个符号的复制；如图7的(b)所示，对于AGC处理能力1的第二终端设备，在小于18μs的时间内就可以完成AGC，则第一终端设备可以将图6的(a)中第2个符号用于映射PSSCH，以增加数据传输可用的资源，提升资源利用率。
可选地，如图7所示，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号1至符号13，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的后半部分；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号2至符号13，第二资源位于该第一资源前的1.5个符号，即占用该时隙的符号0的后半部分，以及符号1。可选地，第一资源和第二资源可以位于相同的时隙，也可以位于不同的时隙，本申请对此不作限定。
在一种可能的实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分，第二资源的时域资源位于第一时间单元中的第一个符号的第一部分。
在另一种可能的实现方式中，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分，第二资源的时域资源位于第一时间单元中的第一个符号。
在上述两种实现方式中，第一个符号在时域上位于第二个符号之前，第一个符号的第一部分在时域上位于第一个符号的第二部分之前。第三时间单元的最后一个符号包括第一部分和第二部分，最后一个符号的第二部分为空，第三时间单元与第一时间单元相同；或者，第三时间单元在时域上位于第一时间单元之后。
示例性的，以第三时间单元与第一时间单元相同，且一个时间单元是一个时隙(符号0至符号13)为例，对于AGC处理能力1(对应第一值)的第二终端设备，第一资源的时域资源的起始位置是时隙1的符号0的后半部分，第一资源的时域资源的结束位置是时隙1的符号13的前半部分，第二资源的时域资源的起始位置是时隙1的符号0的前半部分；对于AGC处理能力2(对应第二值)的第二终端设备，第一资源的时域资源的起始位置是时隙1的符号1，第一资源的时域资源的结束位置是时隙1的符号13的前半部分，第二资源的时域资源的起始位置是时隙1的符号0。
示例性的，以第三时间单元在时域上位于第一时间单元之后，且一个时间单元是一个时隙(符号0至符号13)为例，对于AGC处理能力1(对应第一值)的第二终端设备，第一资源的时域资源的起始位置是时隙1的符号0的后半部分，第一资源的时域资源的结束位置可以是时隙3的符号13的前半部分，第二资源的时域资源的起始位置是时隙1的符号0的前半部分；对于AGC处理能力2(对应第二值)的第二终端设备，第一资源的时域资源的起始位置是时隙1的符号1，第一资源的时域资源的结束位置是时隙3的符号13的前半部分，第二资源的时域资源的起始位置是时隙1的符号0。也就是说，该实现方式中的第一资源的时域资源连续占用时隙1至时隙3的符号，或者说，可以理解为第一终端设备在连续的时隙1至时隙3上向第二终端设备发送同一数据。
结合图8所示的SL时隙结构的示意图，以资源池的时域资源的单位为时隙，承载侧行信息的时域资源为一个时隙为例，对时隙结构的配置进行说明。
如图8所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。即最后一个符号的第一部分可以用于PSSCH，最后一个符号的第二部分用于GP。第1个符号的全部或部分用于AGC，取决于第二终端设备(即接 收UE)的AGC处理能力。第2个符号至第14个符号用于映射PSSCH进行数据的传输。
在当前一个时隙中，对于AGC处理能力2的第二终端设备，至少需要35μs的时间完成AGC，则第一终端设备可以将第1个符号全部设置为用于AGC，比如第1个符号可以是第2个符号的复制；对于AGC处理能力1的第二终端设备，在小于18μs的时间内可以完成AGC，则第一终端设备可以将第1个符号的第二部分映射为PSSCH，第二终端设备可以利用时域的1次或多次重复进行AGC，并利用剩余的1次或多次重复进行PSSCH解码，以增加数据传输可用的资源，提升资源利用率。
可选地，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号0的后半部分、符号1至符号12、符号13的前半部分，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的前半部分；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号1至符号12、符号13的前半部分，第二资源位于该第一资源前的1个符号，即占用该时隙的符号0。该实现方式中的第一资源的时域资源的起止位置在同一时隙上。可选地，第一资源的时域资源的起止位置也可以位于不同的时隙。例如，第一资源的时域资源的起始位置位于时隙1的符号1，第一资源的时域资源的结束位置位于slot3的符号13的前半部分，说明第一终端设备可以连续在时隙1至时隙3上向第二终端设备发送同一数据，本申请对此不作限定。
可选地，第1个符号在频域可以通过梳齿的方式进行资源映射，比如频域采用梳齿2进行映射，则表明每隔一个SCS或RE映射一个调制数据。对应的，将第1个符号从频域变换到时域后，比如通过快速傅立叶反变换(inverse fast fourier transformation，IFFT)从频域变换到时域，时域符号内会包含2个重复的部分，即前0.5个符号和后0.5个符号的时域信号相同。同理，如果频域采用梳齿N进行映射，则表明每隔N-1个SCS或RE映射一个调制数据。对应的，时域符号内将包含N个重复的部分。可选地，第二终端设备可以利用N个重复中的部分重复进行该符号上的PSSCH解码。
其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的，也可以是资源池(预)配置的。可选地，PSCCH占用的时域资源的起始位置位于PSCCH所在时隙的第二个符号。即第2个符号至第4个符号的部分或全部频域资源还用于映射PSCCH。也就是说，为了降低PSCCH盲检的复杂度，可以将PSCCH从第2个符号开始映射，这样一来，无论第一终端设备(发送UE)是否在第1个符号上传输有效信息(映射PSSCH)，PSCCH的资源位置是固定的，第二终端设备只需要从第2个符号开始盲检PSCCH即可。
可选地，第一终端设备可以向第二终端设备发送SCI，用于指示第1个符号是否映射了PSSCH，使得第二终端设备可以明确是否需要在第1个符号解码PSSCH。
情况二：有PSFCH的时隙
在一种可能的实现方式中，第二信息包括第一值，第三资源的时域资源位于第二时间单元的倒数第二个符号，以及第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元中的倒数第三个符号的第二部分，第四资源用于第一终端设备进行AGC。
示例性的，第一值可以是比特“1”，用于指示第一终端设备的AGC处理能力强，即AGC的处理时间较短(例如，处理能力1)。例如，当SCS为30kHz，对应的每个符号时间为35.68μs，“1”指示第一终端设备的AGC处理时长为16μs时，则该第一终端设备可以占用半个符号即可完成AGC。需要说明的是，该实现方式适用于AGC处理能力强的UE。
在另一种可能的实现方式中，第二信息包括第二值，第三资源的时域资源位于第二时间单元的最后一个符号，第四资源的时域资源位于第二时间单元的倒数第三个符号的第二部分，以及第二时间单元的倒数第二个符号，第四资源用于第一终端设备进行AGC。
示例性的，第二值可以是比特“0”，用于指示第一终端设备的AGC处理能力弱，即AGC的处理时间较长(例如，处理能力2)。例如，当SCS为30kHz，对应的每个符号时间为35.68μs，“0”指示第一终端设备的AGC处理时长为36μs时，则该第一终端设备需要占用多于一个符号才能完成AGC。需要说明的是，该实现方式适用于AGC处理能力弱的UE。
基于上述两种实现方式，倒数第三个符号在时域上位于倒数第二个符号之前，倒数第二个符号在时域上位于最后一个符号之前。第二时间单元的倒数第三个符号包括第一部分和第二部分，倒数第三个符号的第一部分为空，且倒数第三个符号的第一部分在时域上位于倒数第三个符号的第二部分之前。
可选地，第二时间单元与第一时间单元相同，或者，第二时间单元在时域上位于第一时间单元之 后。也就是说，本申请技术方案并不限定每个时间单元都映射有PSFCH。
如图6的(b)所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。即第1个符号中的第一部分设置为GP，比如该第一部分的持续时长大于或等于13μs；第二部分设置为AGC，比如第二部分的持续时长大于或等于18μs。第2个符号用于AGC或者用于映射PSSCH，这取决于第二终端设备(即接收UE)的AGC处理能力。第3个符号至第11个符号用于映射PSSCH进行数据的传输。其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的，也可以是资源池(预)配置的，即第3个符号至第5个符号的部分或全部频域资源还用于映射PSCCH。第12个符号的第一部分设置为GP，第12个符号的第二部分设置为AGC。第13个符号用于AGC或者用于映射PSFCH，取决于第一终端设备(即发送UE)的AGC处理能力。
示例性的，对于AGC处理能力2的第一终端设备，至少需要35μs的时间完成AGC，则需要将倒数第二个符号设置为AGC，比如倒数第2个符号可以是最后一个符号的复制；对于AGC处理能力1的第一终端设备，在小于18μs的时间内就可以完成AGC，则可以将倒数第二个符号用于映射PSFCH，以增加第二终端设备进行HARQ反馈传输可用的资源，提升资源利用率。
可选地，如图6的(b)所示，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号1至符号10，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的后半部分，第三资源占用该时隙的符号12和符号13，第四资源占用该时隙的符号11的后半部分；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号1的后半部分、符号2至符号10，第二资源位于该第一资源前的1.5个符号，即占用该时隙的符号0的后半部分，以及符号1，第三资源占用该时隙的符号13，第四资源占用该时隙的符号11的后半部分和符号12。
在一种可能的实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，第二资源的时域资源位于第一时间单元中的第一个符号的第一部分；同时，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，第四资源的时域资源位于第四时间单元的倒数第三个符号。
在另一种可能的实现方式中，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号；同时，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，第四资源的时域资源位于第四时间单元的倒数第三个符号。
应理解，这里的第一信息的第一值用于指示第二终端设备的AGC处理能力强(例如，处理能力1)，AGC处理时长短；第二信息的第一值用于指示第一终端设备的AGC处理能力强(例如，处理能力1)，AGC处理时长短。另外，本申请中第一资源与第二资源的确定是根据第一信息确定的。
还应理解，这里的第一信息的第二值用于指示第二终端设备的AGC处理能力弱(例如，处理能力2)，AGC处理时间长；第二信息的第二值用于指示第一终端设备的AGC处理能力强(例如，处理能力2)，AGC处理时间长。另外，本申请中第三资源与第四资源的确定是根据第二信息确定的。
基于上述两种实现方式，第四时间单元的最后一个符号为空符号，第四时间单元与第一时间单元相同，或者，第四时间单元在时域上位于第一时间单元之后。
结合图9所示的SL时隙结构的示意图，以资源池的时域资源的单位为时隙，承载侧行信息的时域资源为一个时隙为例，对时隙结构的配置进行说明。
如图9的(a)所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。例如，对于AGC处理能力2的第二终端设备，至少需要35μs的时间完成AGC，则第一终端设备可以将第1个符号全部设置为用于AGC，比如第1个符号可以是第2个符号的复制；又例如，对于AGC处理能力1的第二终端设备，在小于18μs的时间内可以完成AGC，则第一终端设备可以将第1个符号的第二部分映射为PSSCH。第2符号至第10个符号，以及第11个符号的第一部分用于映射PSSCH，第11个符号的第二部分用于GP。相比于图8所示的时隙结构，该时隙结构需要额外预留3个符号，即第12个符号用于AGC，第13个符号用于PSFCH，第14个符号用于GP。
其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的， 也可以是资源池(预)配置的。可选地，PSCCH占用的时域资源的起始位置位于PSCCH所在时隙的第二个符号。即第2个符号至第4个符号的部分或全部频域资源还用于映射PSCCH。
可选地，如图9的(a)所示，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号0的后半部分、符号1至符号9、符号10的前半部分，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的后半部分，第三资源占用该时隙的符号12，第四资源占用该时隙的符号11；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号1至符号9、符号10的前半部分，第二资源位于该第一资源前的1个符号，即占用该时隙的符号0，第三资源占用该时隙的符号12，第四资源占用该时隙的符号11。
可选地，第一终端设备可以向第二终端设备发送SCI，用于指示第1个符号是否映射了PSSCH，使得第二终端设备可以明确是否需要在第1个符号解码PSSCH。
在一种可能的实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，第二资源的时域资源位于第一时间单元中的第一个符号的第一部分；和/或，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第三个符号中的第二部分、第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第一部分。
在另一种可能的实现方式中，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号；和/或，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号。
基于上述两种实现方式，第一个符号在时域上位于第二个符号之前，第一个符号的第一部分在时域上位于第一个符号的第二部分之前，最后一个符号的第一部分在时域上位于最后一个符号的第二部分之前。第四时间单元的最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。
如图9的(b)所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。
示例性的，对于AGC处理能力2的第二终端设备，至少需要35μs的时间完成AGC，则第一终端设备可以将第1个符号全部设置为用于AGC，比如第1个符号可以是第2个符号的复制；对于AGC处理能力1的第二终端设备，在小于18μs的时间内可以完成AGC，则第一终端设备可以将第1个符号的第二部分映射为PSSCH。
示例性的，对于AGC处理能力2的第一终端设备，至少需要35μs的时间完成AGC，则可以将第12个符号全部设置为用于AGC；对于AGC处理能力1的第一终端设备，在小于18μs的时间内可以完成AGC，则可以将第12个符号的第二部分映射为PSFCH，提升HARQ反馈可靠性。
在该时隙中，第2个符号至第10个符号，以及第11个符号的第一部分用于映射PSSCH，第11个符号的第二部分用于GP，第13个符号用于映射PSFCH，第14个符号用于GP。
其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的，也可以是资源池(预)配置的。可选地，PSCCH占用的时域资源的起始位置位于PSCCH所在时隙的第二个符号。即第2个符号至第4个符号的部分或全部频域资源还用于映射PSCCH。
可选地，如图9的(b)所示，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号0的后半部分、符号1至符号9、符号10的前半部分，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的后半部分，第三资源占用该时隙的符号11的后半部分、符号12和符号13的前半部分，第四资源占用该时隙的符号11的前半部分；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号1至符号9、符号10的前半部分，第二资源位于该第一资源前的1个符号，即占用该时隙的符号0，第三资源占用该时隙的符号11的后半部分、符号12和符号13的前半部分，第四资源占用该时隙的符号11的前半部分。
可选地，第一终端设备可以向第二终端设备发送SCI，用于指示第1个符号是否映射了PSSCH，使得第二终端设备可以明确是否需要在第1个符号解码PSSCH。
在一种可能的实现方式中，第一信息包括第一值，第一资源的时域资源的起始位置位于第一时间 单元中的第一个符号的第二部分，第二资源的时域资源位于第一时间单元中的第一个符号的第一部分；和/或，第二信息包括第一值，第三资源的时域资源位于第四时间单元的倒数第二个符号，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分。
在另一种可能的实现方式中，第一信息包括第二值，第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，第二资源的时域资源位于第一时间单元中的第一个符号；和/或，第二信息包括第二值，第三资源的时域资源位于第四时间单元的倒数第二个符号的第二部分，以及第四时间单元的最后一个符号的第一部分，第四资源的时域资源位于第四时间单元的倒数第三个符号的第二部分，以及第四时间单元的倒数第二个符号的第一部分。
基于上述两种实现方式，第一个符号在时域上位于第二个符号之前，第一个符号的第一部分在时域上位于第一个符号的第二部分之前，倒数第二个符号的第一部分在时域上位于倒数第二个符号的第二部分之前。第四时间单元的最后一个符号的第二部分为空，第四时间单元与第三时间单元相同，或者，第四时间单元在时域上位于第三时间单元之后。第四时间单元的倒数第三个符号的第一部分，以及第四时间单元的最后一个符号的第二部分为空，第四时间单元与第一时间单元相同，或者，第四时间单元在时域上位于第一时间单元之后。
如图9的(c)所示，在当前一个时隙中，包括14个符号，假设SCS为30kHz，每个符号的时长为35.68μs，则0.5个符号的时长可用于UE进行收发转换或发收转换。
示例性的，对于AGC处理能力2的第二终端设备，至少需要35μs的时间完成AGC，则第一终端设备可以将第1个符号全部设置为用于AGC，比如第1个符号可以是第2个符号的复制；对于AGC处理能力1的第二终端设备，在小于18μs的时间内可以完成AGC，则第一终端设备可以将第1个符号的第二部分映射为PSSCH。
示例性的，对于AGC处理能力2的第一终端设备，至少需要35μs的时间完成AGC，则可以将第13个符号的第一部分设置为用于AGC；对于AGC处理能力1的第一终端设备，在小于18μs的时间内可以完成AGC，则可以将第13个符号全部映射为PSFCH，提升HARQ反馈可靠性。
在该时隙中，第2个符号至第11个符号用于映射PSSCH，第12个符号的第一部分和第14个符号的第二部分用于GP，第14个符号的第一部分用于映射PSFCH。
其中，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置可以是网络设备配置的，也可以是资源池(预)配置的。可选地，PSCCH占用的时域资源的起始位置位于PSCCH所在时隙的第二个符号。即第2个符号至第4个符号的部分或全部频域资源还用于映射PSCCH。
可选地，如图9的(c)所示，对于AGC处理能力1的第二终端设备，第一资源可以占用一个时隙的符号0的后半部分、符号1至符号9、符号10的前半部分，第二资源位于第一资源前的0.5个符号，即占用该时隙的符号0的后半部分，第三资源占用该时隙的符号12和符号13的前半部分，第四资源占用该时隙的符号11的后半部分；对于AGC处理能力2的第二终端设备，第一资源占用一个时隙的符号1至符号9、符号10的前半部分，第二资源位于该第一资源前的1个符号，即占用该时隙的符号0，第三资源占用该时隙的符号12的后半部分、符号13的前半部分，第四资源占用该时隙的符号11的后半部分、符号12的前半部分。
可选地，第一终端设备可以向第二终端设备发送SCI，用于指示第1个符号是否映射了PSSCH，使得第二终端设备可以明确是否需要在第1个符号解码PSSCH。
S530，第一终端设备在第一资源上向第二终端设备发送侧行信息；
对应的，第二终端设备接收来自第一终端设备的侧行信息。
示例性的，侧行信息可以包括以下一项或者多项：PSCCH，PSSCH，或者参考信号。其中，参考信息可以是DM-RS、PT-RS、CSI-RS等。
可选地，第一终端设备可以在执行步骤S530之前，向第二终端设备指示第一资源和/或第二资源，便于第二终端设备快速检测并获取侧行信息，即执行下面步骤S501-S502。在该实现方式中，第一指示信息和侧行信息可以是先后在不同的时隙中发送。
S501，第一终端设备向第二终端设备发送第一指示信息；
对应的，第二终端设备接收来自第一终端设备的第一指示信息。
其中，第一指示信息用于指示第二终端设备进行AGC的第二资源；或者，第一指示信息用于指示第一资源。
S502，第二终端设备根据第一指示信息，确定第一资源和第二资源。
可选地，第一指示信息也可以包含在步骤S530中的侧行信息。例如，第一指示信息可以是一阶SCI，承载在PSCCH中；或者，第一指示信息也可以是二阶SCI，承载在PSSCH中。也就是说，在该实现方式中，第一指示信息和侧行信息可以是在相同的时隙中发送。
可选地，第一指示信息也可以是半静态信息，例如第一终端设备与第二终端设备事先协商好的，或者，基站为第一终端设备和第二终端设备配置或预配置的。
也就是说，本申请实施例中第一指示信息可以发送，也可以不发送，可以在PSCCH资源中发送，也可以在PSSCH资源中发送，可以与侧行信息在同一时间单元内发送，也可以早于侧行信息发送等，本申请对此不作具体限定。
可选地，对于有PSFCH的时隙，第二终端设备在接收到侧行信息后，可以在对应的PSFCH资源(即，第三资源)上向第一终端设备发送第一反馈信息，即执行步骤S503-S504。
S503，第二终端设备确定第三资源。
其中，第三资源用于传输第一反馈信息，第一反馈信息例如为HARQ反馈，用于指示侧行信息的接收情况或用于重传请求指示。
示例性的，假设PSFCH资源周期为4，即每4个时隙中有1个时隙存在PSFCH资源，例如在时隙0，时隙4，时隙8，时隙12等时隙上有PSFCH资源，即时隙0，时隙4，时隙8，时隙12等时隙为PSFCH时隙。另外，sl-MinTimeGapPSFCH配置为2个时隙，即时隙8中的PSFCH与其对应的PSSCH需要满足间隔至少两个时隙，因此时隙8中的PSFCH与时隙3～时隙6中的PSSCH对应，即如果第二终端设备在时隙3～时隙6上接收到PSSCH，则该第二终端设备将在时隙8的PSFCH资源上发送ACK/NACK信息。另外，本申请对第一反馈信息的具体内容不做具体限定。
在本申请实施例中，PSFCH资源可以理解为整个PSFCH符号包含的资源，第三资源可以理解成第二终端设备反馈所述侧行信息的接收情况所实际占用的PSFCH符号上的PRB资源。
S504，第二终端设备在第三资源上向第一终端设备发送第一反馈信息；
对应的，第一终端设备在第三资源上接收来自第二终端设备的第一反馈信息。
其中，第一反馈信息可以用于反馈侧行信息的接收情况。
可选地，步骤S503和S504中的第三资源与第一资源的映射关系可以是资源池(预)配置的。例如，第三资源的时域资源可以位于第一资源的时域资源后的两个时隙。
可选地，对于有PSFCH的时隙，如果接收HARQ反馈的UE(例如，第一终端设备)为AGC处理能力1，表明该第一终端设备的AGC处理能力强，对应的AGC处理时长短，则第二终端设备在接收到侧行信息后，可以利用时隙内的2个有效符号的资源进行HARQ反馈(例如图6的(b)所示)。为了充分利用2个符号提升HARQ反馈的可靠性，可以将两个符号分别与PSSCH资源建立不同的映射关系，使得发送HARQ反馈的UE(例如，第二终端设备)可以在2个PSFCH符号之间跳频传输，以获得频域分集增益。即，第二终端设备可以通过跳频的方式向第一终端设备发送反馈信息，包括如下步骤S505-S506。
需要说明的是，步骤S503-S504与步骤S505-S506可以看做是第二终端设备向第一终端设备发送反馈信息的两种实现方式，可以独立执行，也可以组合执行。具体的，步骤S503-S504中发送反馈信息的资源通常是资源池配置或预配置的，例如在PSFCH所在符号(例如，时隙1上的符号13)的PRB(例如，PRB1)上向第一终端设备发送反馈信息。相比而言，步骤S505-S506中发送反馈信息的资源包括两个符号，主要适用于AGC处理能力强的第一终端设备，第二终端设备通过在两个符号(例如，时隙1的符号12和符号13)上的不同频域位置(例如，符号12的PRBm，符号13的PRBn)向第一终端设备发送反馈信息，该反馈方式能够降低频率选择性衰落的影响，提升HARQ反馈的可靠性，进而保障系统传输性能。
S505，第二终端设备确定第五资源。
其中，第五资源位于第四时间单元上的第一子时间单元和第二子时间单元，且第五资源在第一子时间单元上的频域位置与第五资源在第二子时间单元上的频域位置不同。
示例性的，每个子时间单元可以是一个完整的符号，也可能包含相邻两个符号的各一部分(例如前一个符号的后半部分和后一个符号的前半部分)等。
在一种可能的实现方式中，第四时间单元上的第一子时间单元和第二子时间单元用于反馈位于第四时间单元之前的L个时间单元上发送的数据的接收情况；
第五资源在第一子时间单元上的频域位置满足：
[(i+j·L)·Mset,(i+1+j·L)·Mset-1]；        (1)
即第五资源在第一子时间单元上的子频域单元索引在上述索引范围内，例如子频域单元为PRB或RB；
第五资源在第二子时间单元上的频域位置满足：
[(i+j·L+Q)mod(N·L)·Mset,(i+1+j·L+Q)mod(N·L))·Mset-1]；    (2)
其中，Q为整数且0<Q<N*L。可选地，Q＝N·L/2，则公式(2)可以替换为：
[(i+j·L+N·L/2)mod(N·L)·Mset,(i+1+j·L+N·L/2)mod(N·L))·Mset-1]；   (3)
即第五资源在第二子时间单元上的子频域单元索引在上述索引范围内，例如子频域单元为PRB或RB；
其中，Mset为第五资源在第一子时间单元或第二子时间单元上的频域位置所在的子频域单元集合中的子频域单元的个数，每个子频域单元集合中包含一个或多个子频域单元，N为L个时间单元中的每个时间单元上的频域单元的个数，i为侧行信息所在的时间单元在L个时间单元中的索引，j为侧行信息所在的频域单元在N个频域单元中的索引，Q为第五资源在第一子时间单元与第二子时间单元上的频域位置所在的子频域单元集合的循环移位偏移量，Q为大于0且小于N·L的整数，i为整数且0≤i<L，j为整数且0≤j<N，L为大于或等于1的整数，N为大于或等于1的整数。
换句话说，Q表示第五资源在第一子时间单元上的频域位置所在的子频域单元集合，相比于第五资源在第二子时间单元上的频域位置所在的子频域单元集合，循环移位的个数。其中，0<Q<N·L表示第五资源在第一子时间单元上的频域位置所在的子频域单元集合，与第五资源在第二子时间单元上的频域位置所在的子频域单元集合不相同，这样才能保证反馈信息在跳频传输的情况下，降低频率选择性衰落的影响，提升反馈可靠性。
可选地，Mset、L、N的个数是资源池(预)配置的，本申请对此具体不做限定。
S506，第二终端设备在第五资源上向第一终端设备发送第二反馈信息；
对应的，第一终端设备在第五资源上接收来自第二终端设备的第二反馈信息。
其中，第二反馈信息用于反馈侧行信息的接收情况。
下面，结合图10，以第二终端设备在2个PSFCH符号(例如，符号1和符号2)之间跳频传输第二反馈信息为例进行说明。其中，符号1在时域上位于符号2之前。
如图10所示，假设PSFCH资源周期为4，即每4个时隙中有1个时隙存在PSFCH资源，即在时隙2和时隙6上有PSFCH资源。例如，L＝4，N＝3，即用于传输PSSCH(即，侧行信息的一例)的时隙1至时隙4中均包含3个子信道。时隙1至时隙4可以用于发送PSSCH的资源按照先时域后频域的顺序分别编号为PSSCH1～PSSCH12。可选地，时隙1至时隙4上的PSSCH1～PSSCH12也可以按照先频域后时域的顺序进行编号，本申请对此不作具体限定。如果时隙1至时隙4上的PSSCH1～PSSCH12资源按照先频域后时域的顺序进行编号，只需要将上述公式(1)至公式(3)中的i+j*L替换为i*N+j，即可分别表示第五资源在第一子时间单元和第二子时间单元上的频域位置。时隙6的最后两个符号均等分为12个PRB集合，分别编号为1～12，依次与PSSCH1～PSSCH12相关联。每个PRB集合包括Mset个PRB。时隙6的最后两个符号中的符号1上的PSFCH资源与PSSCH资源的关联顺序，相比于符号2上的PSFCH资源与PSSCH资源的关联顺序，循环移位次。例如，符号1上的PSFCH资源与PSSCH资源的关联顺序，相比于符号2上的PSFCH资源与PSSCH资源的关联顺序循环移位了6次，即Q＝6。
也就是说，时隙2和时隙6上有PSFCH资源与时隙1至时隙4的PSSCH资源相关联；比如，第一终端设备在时隙3的第2个子信道上向第二终端设备发送了PSSCH7，则第二终端设备可以在时隙6中的符号1的编号7以及符号2上的编号7所在的PSFCH资源上向第一终端设备发送第二反馈信息，用于指示侧行信息是否接收成功。
基于该实现方式，第二终端设备可以在两个子时间单元的不同频域位置上向第一终端设备发送HARQ反馈，可以降低频率选择性衰落的影响，提升反馈可靠性。
根据本申请提供的方案，根据不同UE的AGC处理能力设置AGC处理时间，以及重新配置时隙结构。对于高AGC处理能力的UE来说，该方法可以降低系统开销，提升频谱利用率，同时还能保持与AGC处理能力较低的UE的兼容性。对于低AGC处理能力的UE来说，该方法能够提高符号配置的灵活性。进一步地，针对高AGC处理能力的UE来说，通过建立PSSCH资源与PSFCH资源之间的映射关系，实现第二终端设备可以跳频传输第二反馈信息，从而提升HARQ反馈的可靠性。
需要说明的是，以上仅是为便于理解技术方案给出的示例，不应构成任何限定。其中，上述提供的有PSFCH的时隙，以及无PSFCH的时隙可以组合使用，可以单独使用。也就是说，第一资源、第二资源、第三资源、第四资源以及第五资源可以位于同一时间单元，也可以位于不同的时间单元，或者说，第一资源、第二资源可以使用本申请技术方案进行确定，第三资源、第四资源和第五资源可以使用现有技术方案进行确定等，本申请对此不作限定。另外，对于上述本申请技术方案所揭示的有PSFCH的时间单元，以及无PSFCH的时间单元的配置可以是资源池配置或预配置的，同时，本申请对所述时间单元上是否有数据发送或者是否有反馈信息发送不做具体限定。
上文结合图1至图10，详细描述了本申请的通信方法侧实施例，下面将结合图11和图12，详细描述本申请的通信装置侧实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的部分可以参见前面方法实施例。
图11是本申请实施例提供的通信装置1000的示意性框图。如图11所示，该装置1000可以包括收发单元1010和处理单元1020。收发单元1010可以与外部进行通信，处理单元1020用于进行数据处理，收发单元1010还可以称为通信接口或收发单元。
在一种可能的设计中，该装置1000可实现对应于上文方法实施例中的第一终端设备(例如，发送UE1)执行的步骤或者流程，其中，处理单元1020用于执行上文方法实施例中第一终端设备的处理相关的操作，收发单元1010用于执行上文方法实施例中第一终端设备的收发相关的操作。
在另一种可能的设计中，该装置1000可实现对应于上文方法实施例中的第二终端设备(例如，接收UE2)执行的步骤或者流程，其中，处理单元1020用于执行上文方法实施例中第二终端设备的处理相关的操作，收发单元1010用于执行上文方法实施例中第二终端设备的收发相关的操作。
应理解，这里的设备1000以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，设备1000可以具体为上述实施例中的发送端，可以用于执行上述方法实施例中与发送端对应的各个流程和/或步骤，或者，设备1000可以具体为上述实施例中的接收端，可以用于执行上述方法实施例中与接收端对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的设备1000具有实现上述方法中发送端所执行的相应步骤的功能，或者，上述各个方案的设备1000具有实现上述方法中接收端所执行的相应步骤的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如收发单元可以由收发机替代(例如，收发单元中的发送单元可以由发送机替代，收发单元中的接收单元可以由接收机替代)，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
此外，上述收发单元还可以是收发电路(例如可以包括接收电路和发送电路)，处理单元可以是处理电路。在本申请的实施例，图11中的装置可以是前述实施例中的接收端或发送端，也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。其中，收发单元可以是输入输出电路、通信接口。处理单元为该芯片上集成的处理器或者微处理器或者集成电路。在此不做限定。
图12示出了本申请实施例提供的通信装置2000。如图12所示，该装置2000包括处理器2010和收发器2020。其中，处理器2010和收发器2020通过内部连接通路互相通信，该处理器2010用于执行指令，以控制该收发器2020发送信号和/或接收信号。
可选地，该装置2000还可以包括存储器2030，该存储器2030与处理器2010、收发器2020通过 内部连接通路互相通信。该存储器2030用于存储指令，该处理器2010可以执行该存储器2030中存储的指令。
在一种可能的实现方式中，装置2000用于实现上述方法实施例中的第一终端设备(例如，发送UE1)对应的各个流程和步骤。
在另一种可能的实现方式中，装置2000用于实现上述方法实施例中的第二终端设备(例如，接收UE2)对应的各个流程和步骤。
应理解，设备2000可以具体为上述实施例中的发送端或接收端，也可以是芯片或者芯片系统。对应的，该收发器2020可以是该芯片的收发电路，在此不做限定。具体地，该设备2000可以用于执行上述方法实施例中与发送端或接收端对应的各个步骤和/或流程。
可选地，该存储器2030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。例如，存储器还可以存储设备类型的信息。该处理器2010可以用于执行存储器中存储的指令，并且当该处理器2010执行存储器中存储的指令时，该处理器2010用于执行上述与发送端或接收端对应的方法实施例的各个步骤和/或流程。
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、专用集成电路、现场可编程门阵列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。本申请实施例中的处理器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。
图13是本申请实施例提供的芯片系统3000的示意性框图。如图13所示，该芯片系统3000(或者也可以称为处理系统)包括逻辑电路3010以及输入/输出接口(input/output interface)3020。
其中，逻辑电路3010可以为芯片系统3000中的处理电路。逻辑电路3010可以耦合连接存储单元，调用存储单元中的指令，使得芯片系统3000可以实现本申请各实施例的方法和功能。输入/输出接口3020，可以为芯片系统3000中的输入输出电路，将芯片系统3000处理好的信息输出，或将待处理的数据或信令信息输入芯片系统3000进行处理。
作为一种方案，该芯片系统3000用于实现上文各个方法实施例中由终端设备执行的操作。
例如，逻辑电路3010用于实现上文方法实施例中由第一终端设备执行的处理相关的操作，如图5所示实施例中第一终端设备执行的处理相关的操作；输入/输出接口3020用于实现上文方法实施例中 由第一终端设备执行的发送和/或接收相关的操作，如图5所示实施例中的第一终端设备执行的发送和/或接收相关的操作。
再例如，逻辑电路3010用于实现上文方法实施例中由第二终端设备执行的处理相关的操作，如图5所示实施例中第二终端设备执行的处理相关的操作；输入/输出接口3020用于实现上文方法实施例中由第二终端设备执行的发送和/或接收相关的操作，如图5所示实施例中的第二终端设备执行的发送和/或接收相关的操作。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述各方法实施例中由终端设备(如第一终端设备，又如第二终端设备)执行的方法的计算机指令。
本申请实施例还提供一种计算机程序产品，包含指令，该指令被计算机执行时以实现上述各方法实施例中由终端设备(如第一终端设备，又如第二终端设备)执行的方法。
本申请实施例还提供一种通信系统，该通信系统包括上文各实施例中的第一终端设备和第二终端设备。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
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或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者装置等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、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 (34)

  1. 一种通信方法，其特征在于，包括：
    第一终端设备获取第一信息，所述第一信息用于指示第二终端设备的自动增益控制AGC处理能力；
    所述第一终端设备根据所述第一信息，确定第一资源；
    所述第一终端设备在所述第一资源上向所述第二终端设备发送侧行信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一终端设备获取第一信息，包括：
    所述第一终端设备接收来自所述第二终端设备的所述第一信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备向所述第二终端设备发送第一指示信息，所述第一指示信息用于指示所述第二终端设备进行AGC的第二资源，所述第二资源是根据所述第一信息确定的；或者，
    所述第一指示信息用于指示所述第一资源。
  4. 根据权利要求3所述的方法，其特征在于，所述第一指示信息承载在物理侧行控制信道PSCCH中，或者物理侧行共享信道PSSCH中。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；
    其中，所述PSCCH的时域资源的起始位置位于所述PSCCH所在时间单元的第三个符号。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，
    所述第一信息包括第一值，所述第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，用于所述第二终端设备进行AGC的第二资源的时域资源位于所述第一时间单元中的第一个符号的第二部分；或者，
    所述第一信息包括第二值，所述第一资源的时域资源的起始位置位于所述第一时间单元中的第三个符号，所述第二资源的时域资源位于所述第一时间单元中的第一个符号的第二部分，以及所述第一时间单元中的第二个符号；
    其中，所述第一个符号在时域上位于所述第二个符号之前，所述第二个符号在时域上位于所述第三个符号之前。
  7. 根据权利要求6所述的方法，其特征在于，
    所述第一时间单元的第一个符号包括第一部分和所述第二部分，所述第一个符号的第一部分为空，且所述第一个符号的第一部分在时域上位于所述第一个符号的第二部分之前。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备在第三资源上接收来自所述第二终端设备的第一反馈信息，所述第一反馈信息承载在物理侧行反馈信道PSFCH中，所述第三资源是根据第二信息确定的，所述第二信息用于指示所述第一终端设备的AGC处理能力。
  9. 根据权利要求8所述的方法，其特征在于，
    所述第二信息包括第一值，所述第三资源的时域资源位于第二时间单元的倒数第二个符号，以及所述第二时间单元的最后一个符号，第四资源的时域资源位于所述第二时间单元中的倒数第三个符号的第二部分，所述第四资源用于所述第一终端设备进行AGC；或者，
    所述第二信息包括第二值，所述第三资源的时域资源位于所述第二时间单元的最后一个符号，所述第四资源的时域资源位于所述第二时间单元的倒数第三个符号的第二部分，以及所述第二时间单元的倒数第二个符号；
    其中，所述第二时间单元的倒数第三个符号包括第一部分和所述第二部分，所述倒数第三个符号的第一部分为空，所述第二时间单元与所述第一时间单元相同，或者，所述第二时间单元在时域上位于所述第一时间单元之后。
  10. 根据权利要求1至4中任一项所述的方法，其特征在于，每个时间单元中用于映射所述PSCCH的时频域资源和/或频域资源的位置是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源 和/或频域资源的位置是由网络设备配置的；
    其中，所述PSCCH的时域资源的起始位置位于所述PSCCH所在时间单元的第二个符号。
  11. 根据权利要求1至4、或10中任一项所述的方法，其特征在于，
    所述第一信息包括第一值，所述第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，用于所述第二终端设备进行AGC的第二资源的时域资源位于所述第一时间单元中的第一个符号的第一部分；或者，
    所述第一信息包括第二值，所述第一资源的时域资源的起始位置位于所述第一时间单元中的第二个符号，所述第二资源的时域资源位于所述第一时间单元中的第一个符号；
    其中，所述第一个符号在时域上位于所述第二个符号之前，所述第一个符号的第一部分在时域上位于所述第一个符号的第二部分之前。
  12. 根据权利要求11所述的方法，其特征在于，
    所述第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分；
    其中，所述第三时间单元的最后一个符号包括所述第一部分和第二部分，所述最后一个符号的第二部分为空，所述第三时间单元与所述第一时间单元相同；或者，所述第三时间单元在时域上位于所述第一时间单元之后。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备在第五资源上接收来自所述第二终端设备的第二反馈信息，所述第二反馈信息用于反馈所述侧行信息的接收情况；
    其中，所述第五资源位于第四时间单元上的第一子时间单元和第二子时间单元，且所述第五资源在所述第一子时间单元上的频域位置与所述第五资源在所述第二子时间单元上的频域位置不同。
  14. 根据权利要求13所述的方法，其特征在于，所述第四时间单元上的所述第一子时间单元和所述第二子时间单元用于反馈位于所述第四时间单元之前的L个时间单元上发送的数据的接收情况，
    所述第五资源在所述第一子时间单元上的频域位置满足：
    [(i+j·L)·Mset,(i+1+j·L)·Mset-1]；
    所述第五资源在所述第二子时间单元上的频域位置满足：
    [(i+j·L+Q)mod(N·L)·Mset,(i+1+j·L+Q)mod(N·L))·Mset-1]；
    其中，Mset为所述第五资源在所述第一子时间单元或所述第二子时间单元上的频域位置所在的子频域单元集合中的子频域单元的个数，N为所述L个时间单元中的每个时间单元上的频域单元的个数，i为所述侧行信息所在的时间单元在所述L个时间单元中的索引，j为所述侧行信息所在的频域单元在所述N个频域单元中的索引，Q为所述第五资源在所述第一子时间单元与所述第二子时间单元上的频域位置所在的子频域单元集合的循环移位偏移量，Q为大于0且小于N·L的整数，i为大于或等于零且小于或等于L-1的整数，j为大于或等于零且小于或等于N-1的整数，L和N为正整数。
  15. 一种通信方法，其特征在于，包括：
    第二终端设备向第一终端设备发送第一信息，所述第一信息用于指示所述第二终端设备的自动增益控制AGC处理能力；
    所述第二终端设备在第一资源上接收来自所述第一终端设备的侧行信息，所述第一资源是根据所述第一信息确定的。
  16. 根据权利要求15所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备接收来自所述第一终端设备的第一指示信息，所述第一指示信息用于指示所述第二终端设备进行AGC的第二资源，所述第二资源是根据所述第一信息确定的；或者，
    所述第一指示信息用于指示所述第一资源。
  17. 根据权利要求16所述的方法，其特征在于，所述第一指示信息承载在PSCCH中，或者物理侧行共享信道PSSCH中。
  18. 根据权利要求15至17中任一项所述的方法，其特征在于，每个时间单元中用于映射所述PSCCH的时域资源和/或频域资源是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；
    其中，所述PSCCH的时域资源的起始位置位于所述PSCCH所在时间单元的第三个符号。
  19. 根据权利要求15至18中任一项所述的方法，其特征在于，
    所述第一信息包括第一值，所述第一资源的时域资源的起始位置位于第一时间单元中的第二个符号，用于所述第二终端设备进行AGC的第二资源的时域资源位于所述第一时间单元中的第一个符号的第二部分；或者，
    所述第一信息包括第二值，所述第一资源的时域资源的起始位置位于所述第一时间单元中的第三个符号，所述第二资源的时域资源位于所述第一时间单元中的第一个符号的第二部分，以及所述第一时间单元中的第二个符号；
    其中，所述第一个符号在时域上位于所述第二个符号之前，所述第二个符号在时域上位于所述第三个符号之前。
  20. 根据权利要求19所述的方法，其特征在于，
    所述第一时间单元的第一个符号包括第一部分和所述第二部分，所述第一个符号的第一部分为空，且所述第一个符号的第一部分在时域上位于所述第一个符号的第二部分之前。
  21. 根据权利要求15至20中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备在第三资源上向所述第一终端设备发送第一反馈信息，所述第一反馈信息承载在PSFCH中，所述第三资源是根据第二信息确定的，所述第二信息用于指示所述第一终端设备的AGC处理能力。
  22. 根据权利要求21所述的方法，其特征在于，
    所述第二信息包括第一值，所述第三资源的时域资源位于第二时间单元的倒数第二个符号，以及所述第二时间单元的最后一个符号，第四资源的时域资源位于所述第二时间单元中的倒数第三个符号的第二部分，所述第四资源用于所述第一终端设备进行AGC；或者，
    所述第二信息包括第二值，所述第三资源的时域资源位于所述第二时间单元的最后一个符号，所述第四资源的时域资源位于所述第二时间单元的倒数第三个符号的第二部分，以及所述第二时间单元的倒数第二个符号；
    其中，所述第二时间单元的倒数第三个符号包括第一部分和所述第二部分，所述倒数第三个符号的第一部分为空，所述第二时间单元与所述第一时间单元相同，或者，所述第二时间单元在时域上位于所述第一时间单元之后。
  23. 根据权利要求15至17中任一项所述的方法，其特征在于，每个时间单元中用于映射所述PSCCH占用的时域资源和/或频域资源是预配置的，或者，每个时间单元中用于映射PSCCH的时域资源和/或频域资源的位置是由网络设备配置的；
    其中，所述PSCCH的时域资源的起始位置位于所述PSCCH所在时间单元的第二个符号。
  24. 根据权利要求15至17、或23中任一项所述的方法，其特征在于，
    所述第一信息包括第一值，所述第一资源的时域资源的起始位置位于第一时间单元中的第一个符号的第二部分，用于所述第二终端设备进行AGC的第二资源的时域资源位于所述第一时间单元中的第一个符号的第一部分；或者，
    所述第一信息包括第二值，所述第一资源的时域资源的起始位置位于所述第一时间单元中的第二个符号，所述第二资源的时域资源位于所述第一时间单元中的第一个符号；
    其中，所述第一个符号在时域上位于所述第二个符号之前，所述第一个符号的第一部分在时域上位于所述第一个符号的第二部分之前。
  25. 根据权利要求24所述的方法，其特征在于，
    所述第一资源的时域资源的结束位置位于第三时间单元中的最后一个符号的第一部分；
    其中，所述第三时间单元的最后一个符号包括所述第一部分和第二部分，所述最后一个符号的第二部分为空，所述第三时间单元与所述第一时间单元相同；或者，所述第三时间单元在时域上位于所述第一时间单元之后。
  26. 根据权利要求15至25中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备在第五资源上向所述第一终端设备发送第二反馈信息，所述第二反馈信息用于反馈所述侧行信息的接收情况；
    其中，所述第五资源位于第四时间单元上的第一子时间单元和第二子时间单元，且所述第五资源 在所述第一子时间单元上的频域位置与所述第五资源在所述第二子时间单元上的频域位置不同。
  27. 根据权利要求26所述的方法，其特征在于，所述第四时间单元上的所述第一子时间单元和所述第二子时间单元用于反馈位于所述第四时间单元之前的L个时间单元上发送的数据的接收情况，
    所述第五资源在所述第一子时间单元上的频域位置满足：
    [(i+j·L)·Mset,(i+1+j·L)·Mset-1]；
    所述第五资源在所述第二子时间单元上的频域位置满足：
    [(i+j·L+Q)mod(N·L)·Mset,(i+1+j·L+Q)mod(N·L))·Mset-1]；
    其中，Mset为所述第五资源在所述第一子时间单元或所述第二子时间单元上的频域位置所在的子频域单元集合中的子频域单元的个数，N为所述L个时间单元中的每个时间单元上的频域单元的个数，i为所述侧行信息所在的时间单元在所述L个时间单元中的索引，j为所述侧行信息所在的频域单元在所述N个频域单元中的索引，Q为所述第五资源在所述第一子时间单元与所述第二子时间单元上的频域位置所在的子频域单元集合的循环移位偏移量，Q为大于0且小于N·L的整数，i为大于或等于零且小于或等于L-1的整数，j为大于或等于零且小于或等于N-1的整数，L和N为正整数。
  28. 一种通信装置，其特征在于，包括用于执行权利要求1至14中任一项所述的方法的模块或单元。
  29. 一种通信装置，其特征在于，包括用于执行权利要求15至27中任一项所述的方法的模块或单元。
  30. 一种第一终端设备，其特征在于，所述装置包括处理器，所述处理器与存储器耦合，所述存储器存储有指令，所述指令被所述处理器运行时，使得所述处理器执行如权利要求1至14中任一项所述的方法。
  31. 一种第二终端设备，其特征在于，所述装置包括处理器，所述处理器与存储器耦合，所述存储器存储有指令，所述指令被所述处理器运行时，使得所述处理器执行如权利要求15至27中任一项所述的方法。
  32. 一种通信系统，其特征在于，包括第一终端设备和第二终端设备，
    所述第一终端设备用于执行如权利要求1至14中任一项所述的方法；
    所述第二终端设备用于执行如权利要求15至27中任一项所述的方法。
  33. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至27中任一项所述的方法。
  34. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，实现如权利要求1至27中任一项所述的方法。
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