WO2023231910A1 - 反馈信息发送方法、反馈信息接收方法、终端及存储介质 - Google Patents

反馈信息发送方法、反馈信息接收方法、终端及存储介质 Download PDF

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Publication number
WO2023231910A1
WO2023231910A1 PCT/CN2023/096473 CN2023096473W WO2023231910A1 WO 2023231910 A1 WO2023231910 A1 WO 2023231910A1 CN 2023096473 W CN2023096473 W CN 2023096473W WO 2023231910 A1 WO2023231910 A1 WO 2023231910A1
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WO
WIPO (PCT)
Prior art keywords
psfch
feedback
transmissions
terminal
resource
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PCT/CN2023/096473
Other languages
English (en)
French (fr)
Inventor
纪鹏宇
张静文
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Publication of WO2023231910A1 publication Critical patent/WO2023231910A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • 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

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a feedback information sending method, a feedback information receiving method, a terminal and a storage medium.
  • side link also called side link
  • the terminal currently supports the side link (SL) feedback mechanism.
  • the side link feedback mechanism is between two transmissions of the Transport Block (TB) transmission. There is only one feedback opportunity. If the Hybrid automatic repeat request acknowledgment (HARQ ACK) feedback information fails to be sent successfully at this feedback opportunity, system performance may be degraded.
  • HARQ ACK Hybrid automatic repeat request acknowledgment
  • Embodiments of the present disclosure provide a feedback information sending method, a feedback information receiving method, a terminal and a storage medium to solve the problem that in the existing side link feedback mechanism, there is only one feedback opportunity between two transmissions of TB transmission. Feedback timing HARQ ACK feedback information fails to be sent successfully, which may cause system performance degradation.
  • embodiments of the present disclosure provide a method for sending feedback information, which is applied to a first terminal.
  • the method includes:
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located
  • the first PSSCH resource is the transmission resource when the number of transmissions of the transmission block TB is the first number of transmissions
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions.
  • the first number is an integer greater than 1
  • the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1
  • the feedback information is the third number of the TB Feedback information corresponding to a number of transmissions.
  • sending feedback information to the second terminal based on the first number of PSFCH feedback opportunities includes:
  • channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal, and the first PSFCH feedback opportunity is the first Any feedback opportunity among the number of PSFCH feedback opportunities, and the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the method also includes:
  • determining the first number of physical side link feedback channel PSFCH feedback opportunities includes:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the feedback information is sent to the second terminal based on the first number of PSFCH feedback opportunities, including include:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is determined based on the first PSSCH resource
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on the first resource block RB set, the first RB set is determined based on the second RB set and the number of first time slots, and the second RB
  • the set is determined by the second PSSCH resource and is the complete set of resources available for PSFCH feedback before the second PSSCH resource. There is no overlap between the second RB set and the third RB set in the frequency domain.
  • the third RB set is determined by the first PSSCH resource and is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is the number of timeslots associated with the current PSFCH after the PSFCH is sent. The number of time slots used for PSSCH transmission.
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH resources, and there is a mapping relationship between PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets and the same PSSCH resource.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback timing is the last one sorted by time.
  • PSFCH feedback timing, the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • embodiments of the present disclosure provide a method for receiving feedback information, which is applied to a second terminal.
  • the method includes:
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • the method further includes:
  • the first terminal fails to decode the TB transmitted with the first number of transmissions, perform transmission of the TB with the second number of transmissions.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • the last received feedback information indicates successful decoding, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions; otherwise, it is determined that the first terminal has decoded the TB transmitted for the first number of transmissions. fail.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the first number of transmitted TBs, and the first feedback information is the first number of PSFCH feedbacks. Feedback information corresponding to at least one PSFCH feedback opportunity in the terminal; otherwise, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • At least one feedback information indicating successful decoding is received from all terminals in the multicast group corresponding to the multicast in the first number of PSFCH feedback opportunities, it is determined that the first terminal has transmitted the first number of transmissions.
  • the TB decoding is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted for the first number of transmissions;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • an embodiment of the present disclosure provides a terminal, where the terminal is a first terminal, and the terminal includes:
  • Determining module used to determine the first number of physical side link feedback channel PSFCH feedback timings
  • a sending module configured to send feedback information to the second terminal based on the first number of PSFCH feedback opportunities
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is
  • the second PSSCH resource is the transmission resource when the number of transmissions of the transmission block TB is the first number of transmissions.
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions.
  • the first number is An integer greater than 1
  • the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1
  • the feedback information is the feedback corresponding to the transmission of the first number of transmissions of the TB information.
  • the sending module is specifically used to:
  • channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal, and the first PSFCH feedback opportunity is the first Any feedback opportunity among the number of PSFCH feedback opportunities, and the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the sending module is also specifically used for:
  • the second The terminal sends feedback information.
  • the determining module is specifically used to:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the sending module is specifically used for:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is determined based on the first PSSCH resource
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on the first resource block RB set, the first RB set is determined based on the second RB set and the number of first time slots, and the second RB
  • the set is determined by the second PSSCH resource and is the complete set of resources available for PSFCH feedback before the second PSSCH resource. There is no overlap between the second RB set and the third RB set in the frequency domain.
  • the third RB set is determined by the first PSSCH resource and is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is the number of timeslots associated with the current PSFCH after the PSFCH is sent. The number of time slots used for PSSCH transmission.
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH resources, and there is a mapping relationship between PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets and the same PSSCH resource.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback opportunity is the last one in time order among the PSFCH feedback opportunities, and the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • an embodiment of the present disclosure provides a terminal, where the terminal is a second terminal, and the terminal includes:
  • a receiving module configured to receive feedback information sent by the first terminal based on the first number of PSFCH feedback opportunities
  • Determining module configured to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • the device also includes:
  • An execution module configured to execute the transmission of the second number of transmissions of the TB when it is determined that the first terminal fails to decode the TB transmitted with the first number of transmissions.
  • the determining module is specifically used to:
  • the last received feedback information indicates successful decoding, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions; otherwise, it is determined that the first terminal has decoded the TB transmitted for the first number of transmissions. fail.
  • the determining module is specifically used to:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the TB transmitted for the first time, and the first feedback information is at least one of the first number of PSFCH feedback opportunities. Feedback information corresponding to a PSFCH feedback opportunity; otherwise, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions.
  • the determining module is specifically used to:
  • At least one feedback information indicating successful decoding is received from all terminals in the multicast group corresponding to the multicast in the first number of PSFCH feedback opportunities, it is determined that the first terminal has transmitted the first number of transmissions.
  • the TB decoding is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted for the first number of transmissions;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • an embodiment of the present disclosure provides a terminal, where the terminal is a first terminal and includes a transceiver and a processor,
  • the processor is configured to determine a first number of physical side link feedback channel PSFCH feedback opportunities
  • the transceiver is configured to send feedback information to the second terminal based on the first number of PSFCH feedback opportunities
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is
  • the second PSSCH resource is a transmission resource when the number of transmissions of the TB is a second number of transmissions
  • the first number is an integer greater than 1
  • the second number of transmissions is greater than the third number of transmissions.
  • a number of transmissions and a difference from the first number of transmissions is 1, and the feedback information is feedback information corresponding to the transmission of the first number of transmissions of the TB.
  • the processor is specifically used to:
  • channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal, and the first PSFCH feedback opportunity is the first Any feedback opportunity among the number of PSFCH feedback opportunities, and the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the transceiver is specifically used for:
  • the processor is specifically used to:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the transceiver is specifically used for:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is based on the first PSSCH Resource determination
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on the first resource block RB set, the first RB set is determined based on the second RB set and the number of first time slots, and the second RB
  • the set is determined by the second PSSCH resource and is the complete set of resources available for PSFCH feedback before the second PSSCH resource. There is no overlap between the second RB set and the third RB set in the frequency domain.
  • the third RB set is determined by the first PSSCH resource and is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is the number of timeslots associated with the current PSFCH after the PSFCH is sent. The number of time slots used for PSSCH transmission.
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH resources, and there is a mapping relationship between PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets and the same PSSCH resource.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback opportunity is the last one in time order among the PSFCH feedback opportunities, and the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • an embodiment of the present disclosure provides a terminal, which is a second terminal and includes a transceiver and a processor,
  • the transceiver is configured to receive feedback information sent by the first terminal based on a first number of PSFCH feedback opportunities
  • the processor is configured to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • the processor is also used to:
  • the first terminal fails to decode the TB transmitted with the first number of transmissions, perform transmission of the TB with the second number of transmissions.
  • the processor is specifically used to:
  • the last received feedback information indicates successful decoding, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions; otherwise, it is determined that the first terminal has decoded the TB transmitted for the first number of transmissions. fail.
  • the processor is specifically used to:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the TB transmitted for the first time, and the first feedback information is at least one of the first number of PSFCH feedback opportunities. Feedback information corresponding to a PSFCH feedback opportunity; otherwise, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions.
  • the processor is specifically used to:
  • the first terminal is The decoding of the TB transmitted by the first number of transmissions is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted by the first number of transmissions;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • an embodiment of the present disclosure provides a terminal, including: a processor, a memory, and a program stored on the memory and executable on the processor.
  • the program is executed by the processor, the above is implemented.
  • embodiments of the present disclosure provide a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, the feedback information transmission described in the first aspect is implemented.
  • a first number of physical side link feedback channel PSFCH feedback opportunities are determined; feedback information is sent to the second terminal based on the first number of PSFCH feedback opportunities; wherein, the first number of PSFCH feedback opportunities It is the feedback opportunity that exists between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located.
  • the number of transmissions of the first PSSCH resource in the transmission block TB is the first number of transmissions.
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first number is an integer greater than 1, and the second number of transmissions is is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is feedback information corresponding to the transmission of the first number of transmissions of the TB.
  • sending feedback information to the second terminal through the first number of PSFCH feedback opportunities can reduce the probability that HARQ ACK feedback information cannot be sent due to unsuccessful access, thereby improving system performance.
  • Figure 1 is a flow chart of a feedback information sending method provided by an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of an SL-U scenario provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of another SL-U scenario provided by an embodiment of the present disclosure.
  • Figure 4 is a schematic diagram of a PSFCH time domain resource determination method provided by an embodiment of the present disclosure
  • Figure 5 is a schematic diagram of another PSFCH time domain resource determination method provided by an embodiment of the present disclosure.
  • Figure 6 is a schematic diagram of the multi-LBT bandwidth mapping mechanism of PSFCH resources provided by an embodiment of the present disclosure
  • Figure 7 is a flow chart of a feedback information receiving method provided by an embodiment of the present disclosure.
  • Figure 8 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • Figure 9 is a schematic structural diagram of another terminal provided by an embodiment of the present disclosure.
  • Figure 10 is a schematic structural diagram of another terminal provided by an embodiment of the present disclosure.
  • Figure 11 is a schematic structural diagram of another terminal provided by an embodiment of the present disclosure.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.
  • NR New Radio
  • the terminal may be a mobile phone, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), also known as notebook computer, personal digital assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device), vehicle user equipment (VUE), pedestrian terminals (Pedestrian User Equipment, PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PC), teller machines or self-service machines and other terminal-side equipment , Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart Clothing etc. It should be noted that the embodiments of this application do not limit the embodiments of this application do not
  • NR-U the next generation base station (the next Generation Node B, gNB)/UE performs channel monitoring (such as Listen Before Talk, LBT)) process, if the channel access is successful, the gNB/UE can transmit at the current transmission opportunity; otherwise, the gNB/UE cannot transmit at the current transmission opportunity.
  • NR-U refers to NR (NR in Unlicensed Spectrum) operating in unlicensed spectrum.
  • LBT failure may cause the physical uplink control channel (PUCCH) feedback opportunity scheduled by the base station to not be fed back due to the UE's unsuccessful channel access. At this time, the UE will store the feedback opportunity within the feedback opportunity.
  • Hybrid automatic repeat request acknowledgment (HARQ-ACK) bits and when the next indicated PUCCH feedback opportunity arrives, all HARQ-ACK bits corresponding to these two opportunities are fed back together. Since there is only one feedback opportunity between two transmissions of TB transmission, there is a high probability that the HARQ ACK feedback information cannot be sent successfully.
  • the current TB transmission is unicast or multicast in ACK/NACK mode, it will cause the first terminal to perform unnecessary retransmissions, which will cause additional resource collisions and thus affect the performance of the system; if the current TB transmission is only NACK (NACK only) mode Multicast will cause some terminals that have not successfully decoded to be unable to obtain retransmitted data packets, resulting in packet loss and thus affecting system performance.
  • ACK refers to positive acknowledgment (Acknowledgement)
  • NACK negative acknowledgment (Negative Acknowledgment).
  • a feedback information sending method, a feedback information receiving method, a terminal and a storage medium are proposed, which can be used to solve the above problems.
  • Figure 1 is a flow chart of a feedback information sending method provided by an embodiment of the present disclosure, and is used for a first terminal. As shown in Figure 1, the method includes the following steps:
  • Step 101 Determine the first number of physical side link feedback channel (Physical SideLink Feedback Channel, PSFCH) feedback opportunities.
  • PSFCH Physical SideLink Feedback Channel
  • the PSFCH feedback opportunity may also be called a PSFCH feedback opportunity, or may be called a PSFCH feedback sending opportunity, or may be called a PSFCH feedback sending opportunity, and so on.
  • the first terminal may be a terminal that receives a transport block (TB), which may be referred to as a receiving UE; the determined PSFCH feedback opportunity is used to send feedback information to the second terminal.
  • the second terminal may be a terminal that sends the TB, which may be referred to as the sending UE for short. The second terminal sends the TB to the first terminal and performs initial transmission and retransmission of the TB.
  • side links may also be called side links.
  • Step 102 Send feedback information to the second terminal based on the first number of PSFCH feedback opportunities.
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first Physical SideLink Shared Channel (PSSCH) resource is located and the time slot where the second PSSCH resource is located, so
  • the first PSSCH resource is a transmission resource when the number of transmissions of the transport block TB is the first number of transmissions
  • the second PSSCH resource is a transmission resource when the number of transmissions of the TB is the second number of transmissions.
  • the first number is an integer greater than 1
  • the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1
  • the feedback information is the first number of the TB Feedback information corresponding to the number of transmissions.
  • the feedback information may be HARQ ACK feedback information.
  • the first PSSCH resource and the second PSSCH resource may be transmission resources when the second terminal sends TB.
  • the first number of PSFCH feedback opportunities may be k PSFCH feedback opportunities, k is an integer greater than 1.
  • the number of transmissions of the TB is the first number of transmissions, which may refer to the nth transmission of the TB; the number of transmissions of the TB is the second number of transmissions, which may refer to the n+1th transmission of the TB, n is a positive integer.
  • the first PSSCH resource may be a transmission resource for the n-th transmission of the TB, and the second PSSCH resource may be a transmission resource for the n+1-th transmission of the TB.
  • nth transmission of TB can also be called the nth transmission of TB.
  • the n+1th transmission of TB can also be called the n+1th transmission of TB.
  • the time slot where the resource corresponding to the nth (n ⁇ N) transmission of the TB is located and the time slot where the resource is located corresponding to the n+1th transmission of the TB includes k (k>1) PSFCH feedback opportunities, which can be It means that there are multiple time slots with PSFCH resources between the time slot of the resource corresponding to the nth (n ⁇ N) transmission of the TB and the time slot of the resource corresponding to the n+1th transmission of the TB.
  • N is the total number of resources selected by the second terminal for initial transmission and retransmission of one TB.
  • the terminal supports sidelink communication on unlicensed spectrum, that is, it supports SL-U scenarios, which can provide more spectrum resources for side link communication to support higher rates and throughput.
  • business data is sent.
  • the physical sidelink feedback channel Physical SideLink Feedback Channel, PSFCH
  • PSFCH Physical SideLink Feedback Channel
  • the disclosed embodiments find more transmission opportunities for the transmission of the Sidelink feedback channel, that is, the first number of transmission opportunities, ensuring the transmission of HARQ-ACK feedback information as much as possible, and reducing the probability of additional resource collisions caused by PSFCH not being transmitted. , and reduces the probability that PSFCH is not sent resulting in no retransmission, which can improve system performance and reliability.
  • the second terminal After the second terminal completes the resource selection process, it is assumed that a total of N resources are selected for initial transmission and retransmission of one TB. If there are k (k>1) times between the time slot of the resource corresponding to the nth (n ⁇ N) transmission of TB and the time slot of the resource corresponding to the n+1th transmission of TB. PSFCH feedback opportunity, and the first terminal fails to attempt channel access at the m (1 ⁇ m ⁇ k)th PSFCH feedback opportunity, it may continue to attempt channel access at the (m+1)th PSFCH feedback opportunity.
  • the k PSFCH feedback opportunities satisfy: the interval between the time domain of the first PSFCH feedback opportunity among the k PSFCH feedback opportunities and the time slot of the resource corresponding to the nth transmission is greater than or equal to the preset interval, and the preset interval can be time The interval is sl-MinTimeGapPSFCH; and the interval between the last symbol (symbol) of the PSFCH resource in the time slot corresponding to the n+1th transmission and the kth PSFCH feedback opportunity is greater than or equal to one for PSFCH processing (processing) and PSSCH reuse. Pass the processing time of preparation.
  • the processing time can be the time required for PSFCH reception and processing plus sidelink retransmission preparation, including the multiplexing of necessary physical channels and any TX-RX/RX-TX switching time (a time required for PSFCH reception and processing plus sidelink retransmission preparation including multiplexing of necessary physical channels and any TX-RX/RX-TX switching time).
  • the processing time is determined by the second terminal implementation.
  • a first number of physical side link feedback channel PSFCH feedback opportunities are determined; feedback information is sent to the second terminal based on the first number of PSFCH feedback opportunities; wherein, the first number of PSFCH feedback opportunities It is the feedback opportunity that exists between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located.
  • the number of transmissions of the first PSSCH resource in the transmission block TB is the first number of transmissions.
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first number is an integer greater than 1, and the second number of transmissions is is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is feedback information corresponding to the transmission of the first number of transmissions of the TB.
  • sending feedback information to the second terminal through the first number of PSFCH feedback opportunities can reduce the probability that HARQ ACK feedback information cannot be sent due to unsuccessful access, thereby improving system performance.
  • sending feedback information to the second terminal based on the first number of PSFCH feedback opportunities includes:
  • the first PSFCH feedback opportunity is the first Any one of the number of PSFCH feedback opportunities
  • the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the first number of PSFCH feedback opportunities may include k PSFCH feedback opportunities.
  • the sending feedback information to the second terminal based on the first number of PSFCH feedback opportunities may include:
  • channel access is performed at the mth PSFCH feedback opportunity and the access fails, channel access continues at the m+1th PSFCH feedback opportunity, where m is an integer greater than or equal to 1 and less than k;
  • the feedback information of the nth transmission of the TB is sent to the second terminal.
  • channel access when channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal. It is possible to perform channel access after the channel access fails. In this case, channel access is continued through the next PSFCH feedback opportunity, which can reduce the probability that HARQ ACK feedback information cannot be sent due to unsuccessful access, thereby improving system performance.
  • the method also includes:
  • channel access when channel access is performed at the second PSFCH feedback opportunity and the access is successful, feedback information is sent to the second terminal.
  • channel access can be performed in the first number of PSFCH feedback opportunities and Feedback information is sent at the feedback time of successful access, which can reduce the probability that HARQ ACK feedback information cannot be sent due to unsuccessful access, thereby improving system performance.
  • determining the first number of physical side link feedback channel PSFCH feedback opportunities includes:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the first number of PSFCH feedback opportunities are sorted by time, which may be in order of time. In order of sorting, those with earlier time are sorted first, and those with later time are sorted last.
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, so that the PSFCH feedback opportunity can be increased in the time domain.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the second number may be the number of sorting bits of the fourth PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order minus one.
  • the fourth PSFCH feedback opportunity may be the i-th PSFCH feedback opportunity, then the value of the second number is i-1.
  • the first number of PSFCH feedback opportunities may include k PSFCH feedback opportunities, and the frequency domain resource corresponding to the i-th PSFCH feedback opportunity among the k PSFCH feedback opportunities corresponds to the first PSFCH feedback opportunity.
  • the frequency domain resources are the same, i is an integer greater than 1;
  • the time domain resources corresponding to the i-th PSFCH feedback opportunity are obtained by shifting i-1 PSFCH cycles based on the time domain resources of the first PSFCH feedback opportunity.
  • the time-frequency resource corresponding to the first PSFCH feedback opportunity among the k PSFCH feedback opportunities can be determined through the PSSCH resource corresponding to the n-th transmission of the TB.
  • the frequency domain resources corresponding to the PSFCH feedback opportunity can be the same as the resources corresponding to the first PSFCH feedback opportunity;
  • the time domain resources corresponding to the PSFCH feedback opportunity can be determined as follows: As shown in Figure 4, for the kth time The PSFCH feedback opportunity and its PSFCH time domain resource are obtained by shifting backward (k-1) PSFCH cycles (assumed to be P) from the first PSFCH feedback opportunity in time.
  • Method 1 the method of determining the time-frequency resources corresponding to the first PSFCH feedback opportunity through the PSSCH resources corresponding to the nth transmission of the TB can be as follows: Method 1.
  • PSFCH time domain resource determination As shown in Figure 5, configure in the resource pool (resource pool)
  • the PSFCH period is N (sl-PSFCH-Period), and a parameter K (sl-MinTimeGapPSFCH) is configured.
  • the time slot for the second terminal to send PSSCH is n, then the first terminal provides feedback in time slot m, and time slot m ⁇ n +k, and includes PSFCH resources.
  • Determination of PSFCH frequency domain/code domain resources According to the index of the PSSCH resource used by the second terminal in all time slots (slots) that the current PSFCH is responsible for feedback, and the starting/all sub-channels (sub-channels) used by it, first Determine the physical resource block (Physical Resource Block, PRB) set used by the PSFCH. Then, based on the resource (source) identifier (Identifier, ID) indicated by the second terminal and the offset (offset) generated by the member ID in the multicast (groupcast) scenario of ACK/NACK mode, Find the specific PSFCH resource used in the Resource Block (RB) set.
  • PRB Physical Resource Block
  • the PRB index included in the allocated PRB set is:
  • the size of the PRB set is in 0 ⁇ j ⁇ Nsubch , is the number of slots previously used for PSSCH transmission corresponding to one PSFCH transmission;
  • N subch is the number of sub-channels included in the resource pool, It is all PRB resources configured in the resource pool that can be used for PSFCH, which can also be called the complete set of PSFCH resource sets.
  • N subch can be transformed into N interlace , that is, its meaning can be converted from the number of sub-channels in the resource pool to the number of interlaces in the resource pool. can be correspondingly converted to
  • the PSFCH resources are obtained through a mapping relationship with the PSSCH data channel resources.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity; and/or the time corresponding to the fourth PSFCH feedback opportunity is
  • the domain resources are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, which can increase the PSFCH feedback opportunities in the time domain.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the sending feedback information to the second terminal based on the first number of PSFCH feedback opportunities includes:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is determined based on the first PSSCH resource
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on a first resource block (RB) set, and the first RB set is determined based on the second RB set and the number of first time slots,
  • the second RB set is determined by the second PSSCH resource and is a complete set of resources available for PSFCH feedback before the second PSSCH resource.
  • the second RB set and the third RB set are in the frequency domain. There is no overlap.
  • the third RB set is determined by the first PSSCH resource. It is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is after PSFCH transmission. The number of time slots associated with the current PSFCH for PSSCH transmission.
  • the first RB set may be The second RB set can be The number of first time slots can be The first RB set can be:
  • N subch is the number of sub-channels included in the resource pool.
  • the first RB set that is, The subsequent slot for PSSCH transmission corresponding to each PSFCH transmission, and the PRB set corresponding to each subchannel in the resource pool (resource pool).
  • the second RB set is It may be determined by the PSSCH resource corresponding to the n+1th transmission of the TB, and the entire set of resources available for PSFCH feedback before the PSSCH resource.
  • the third RB set may be determined by the PSSCH resources corresponding to the nth transmission TB, and the complete set of resources available for PSFCH feedback after the PSSCH resources.
  • the first terminal only feeds back the n-th transmission of the received TB at two determined PSFCH feedback opportunities.
  • the time-frequency resources corresponding to the fifth PSFCH feedback opportunity can be determined through the PSSCH resources corresponding to the nth transmission of the TB.
  • the method of determining the time and frequency resources corresponding to the fifth PSFCH feedback opportunity through the PSSCH resources corresponding to the nth transmission of the TB can be the same as determining the time and frequency corresponding to the first PSFCH feedback opportunity through the PSSCH resources corresponding to the nth transmission of the TB.
  • the resource method is the same, that is, determined using the above method.
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined by the PSSCH resource corresponding to the n+1th transmission of the TB.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity can be the first one before the time slot where the PSSCH resource corresponding to the n+1th transmission of the TB is located, and the distance between it and the last symbol is greater than the target duration.
  • the determination of the frequency domain resources corresponding to the sixth PSFCH feedback opportunity may be based on the PSSCH resources corresponding to the n+1th transmission of the TB, determining the specific PSFCH RB set, and then determining the specific PSFCH resources.
  • the process of determining the specific PSFCH RB set and further determining the specific PSFCH resources according to the PSSCH resources corresponding to the n+1th transmission of the TB can be as follows:
  • the current PSFCH is responsible for feedback of the PSSCH resources corresponding to the n+1th transmission of the TB, and the starting/all subchannels used by them, first determine the PRB set used by the PSFCH. Then, according to the source ID indicated by the second terminal and the offset generated by the member ID in the groupcast scenario of ACK/NACK mode, the specific PSFCH resource used is found in the RB set.
  • the PRB index included in the allocated PRB set is:
  • the size of the PRB set is in 0 ⁇ j ⁇ Nsubch , is a resource set that is completely orthogonal to the PSFCH resource set (union), that is, does not overlap, is the number of subsequent slots used for PSSCH transmission corresponding to one PSFCH transmission;
  • N subch is the number of sub-channels included in the resource pool.
  • Nsubch can be converted to Ninterlace, that is, its meaning can be converted from the number of sub-channels in the resource pool to the number of interlaces in the resource pool. can be correspondingly converted to
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH resource, and there is a mapping relationship between the PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets and the same PSSCH resource.
  • the fourth RB set can also be called Listen Before Talk (LBT) bandwidth.
  • Figure 6 shows the multi-LBT bandwidth mapping mechanism of PSFCH resources. As shown in Figure 6, when the first terminal When the SL BWP or resource pool contains multiple LBT bandwidths (i.e., the fourth RB set), the PSSCH resources of the second terminal can be mapped to multiple PSFCH resources through one LBT bandwidth, and each LBT bandwidth contains a The PSFCH resources of the mapping relationship, that is, the mapping relationship and RB union are defined in terms of per (per) LBT bandwidth.
  • the obtained PSFCH resources can be extended to multiple LBT bandwidths, and the relative frequency domain positions of the multiple obtained PSFCH resources on each LBT bandwidth are the same.
  • the PSFCH resources in the fourth RB set may be resources corresponding to PSFCH feedback opportunities.
  • the method of determining the time-frequency resources corresponding to the PSFCH feedback opportunity can be as follows:
  • PSFCH time domain resources and PSFCH frequency domain/code domain resources may be determined for each LBT bandwidth (ie, the fourth RB set).
  • PSFCH time domain resource determination As shown in Figure 5, configure the PSFCH period in the resource pool to be N (sl-PSFCH-Period), and configure a parameter K (sl-MinTimeGapPSFCH).
  • the second terminal sends the PSSCH
  • the time slot is n, then the first terminal performs feedback in time slot m, time slot m ⁇ n+k, And includes PSFCH resources.
  • PSFCH frequency domain/code domain resource determination According to the index of the PSSCH resource used by the second terminal in all time slots (slots) that the current PSFCH is responsible for feedback, and the starting/all subchannels (subchannels) used by it, first determine each The physical resource block (PRB) set used by PSFCH in an LBT bandwidth. Then, based on the resource (source) ID indicated by the second terminal and the offset (offset) generated by the member (member) ID in the ACK/NACK mode multicast (groupcast) scenario, in the resource block (Resource Block) , find the specific PSFCH resources used by each LBT bandwidth within the RB)set.
  • PRB Physical resource block
  • the PRB index included in the PRB set allocated for each LBT bandwidth is:
  • the size of the PRB set is in 0 ⁇ j ⁇ Nsubch , is the number of slots previously used for PSSCH transmission corresponding to one PSFCH transmission;
  • N subch is the number of sub-channels included in the resource pool, It is all PRB resources configured in the resource pool that can be used for PSFCH, which can also be called the complete set of PSFCH resource sets.
  • each fourth RB set in the plurality of fourth RB sets includes one PSFCH resource, and the PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets exist with the same PSSCH resource. Mapping relationship, thereby increasing PSFCH feedback opportunities in the frequency domain.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback opportunity is the last one in time order among the PSFCH feedback opportunities, and the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • Figure 7 is a flow chart of a method for receiving feedback information provided by an embodiment of the present disclosure, and is used for a second terminal. As shown in Figure 7, the method includes the following steps:
  • Step 201 Receive feedback information sent by the first terminal based on the first number of PSFCH feedback opportunities
  • Step 202 Determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • the second terminal may synthesize the feedback information of the first terminal received within k PSFCH feedback opportunities to determine the feedback result of the nth transmission of the TB, that is, the decoding result of the TB by the first terminal.
  • this embodiment is an implementation of the second terminal corresponding to the embodiment shown in Figure 1.
  • This embodiment will not be described in detail, and the same beneficial effects can also be achieved.
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located.
  • the first PSSCH resource is in the transmission block TB.
  • the number of transmissions is the transmission resource when the number of transmissions is the first number of transmissions
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions
  • the first number is greater than An integer of 1
  • the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1
  • the feedback information is the feedback information corresponding to the transmission of the first number of transmissions of the TB .
  • the method further includes:
  • the first terminal fails to decode the TB transmitted with the first number of transmissions, perform transmission of the TB with the second number of transmissions.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • the last received feedback information indicates successful decoding, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions; otherwise, it is determined that the first terminal has decoded the TB transmitted for the first number of transmissions. fail.
  • the second terminal determines whether the first terminal successfully decoded the TB transmitted for the nth time based on the last feedback information received.
  • the second terminal If the last feedback information is "ACK”, the second terminal considers that the first terminal has successfully decoded the n-th transmitted TB, and the second terminal clears the buffer corresponding to the SL process; if the last If the feedback information is "NACK”, or the second terminal does not receive feedback information from the first terminal in all PSFCH feedback opportunities, the second terminal considers that the first terminal failed to decode the TB of the nth transmission, and the second terminal The terminal continues to perform the n+1th transmission of the TB, thereby retransmitting the TB.
  • the feedback information sent at the first number of PSFCH feedback opportunities is used to determine whether the first terminal has successfully decoded the TB transmitted for the first number of transmissions, which can reduce the error caused by the PSFCH not being sent. Probability of additional resource collisions.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the TB transmitted for the first time, and the first feedback information is at least one of the first number of PSFCH feedback opportunities. Feedback information corresponding to a PSFCH feedback opportunity; otherwise, determine that the first terminal is The TB transmitted in the first transmission number is decoded successfully.
  • the multicast in the first mode may be a NACK only mode multicast.
  • NACK only mode that is, when the value indicated by the cast type indicator field in SCI format 2-A received by the first terminal is "11"
  • the second terminal responds at all PSFCH feedback opportunities If no feedback information is received from the first terminal, the second terminal considers that the first terminal has successfully decoded the n-th transmitted TB, and the second terminal clears the buffer corresponding to the SL process; otherwise, the second terminal considers that the first terminal The decoding of the TB transmitted for the nth time fails, and the second terminal continues to transmit the TB for the n+1th time, thereby retransmitting the TB.
  • the feedback information sent at the first number of PSFCH feedback opportunities is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions, which can reduce the PSFCH The probability that no retransmission occurs due to no transmission.
  • determining whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information includes:
  • At least one feedback information indicating successful decoding is received from all terminals in the multicast group corresponding to the multicast in the first number of PSFCH feedback opportunities, it is determined that the first terminal has transmitted the first number of transmissions.
  • the TB decoding is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted for the first number of transmissions;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • the second mode of multicast may be ACK/NACK mode multicast (groupcast).
  • groupcast In the case of multicast in ACK/NACK mode, that is, when the value indicated by the cast type indicator field in SCI format 2-A received by the first terminal is "01", only when the second terminal is in at least one PSFCH
  • the second terminal considers that the first terminal has successfully decoded the TB transmitted for the nth time, and the second terminal clears the buffer corresponding to the SL process; otherwise, the second terminal The terminal considers that the first terminal has failed to decode the TB transmitted for the nth time, and the second terminal continues to transmit the TB for the n+1th time, thereby retransmitting the TB.
  • the feedback information sent at the first number of PSFCH feedback opportunities is used to determine whether the first terminal is responsible for the TB transmitted for the first number of transmissions. Effective decoding can reduce the probability of additional resource collisions caused by PSFCH not being transmitted.
  • Figure 8 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • the terminal is a first terminal.
  • terminal 300 includes:
  • Determining module 301 used to determine the first number of physical side link feedback channel PSFCH feedback opportunities
  • Sending module 302 configured to send feedback information to the second terminal based on the first number of PSFCH feedback opportunities
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is
  • the second PSSCH resource is the transmission resource when the number of transmissions of the transmission block TB is the first number of transmissions.
  • the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions.
  • the first number is An integer greater than 1
  • the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1
  • the feedback information is the feedback corresponding to the transmission of the first number of transmissions of the TB information.
  • the sending module 302 is specifically used to:
  • channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal, and the first PSFCH feedback opportunity is the first Any feedback opportunity among the number of PSFCH feedback opportunities, and the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the sending module 302 is also specifically used to:
  • the determination module 301 is specifically used to:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the sending module 302 is specifically used for:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is determined based on the first PSSCH resource
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on the first resource block RB set, the first RB set is determined based on the second RB set and the number of first time slots, and the second RB
  • the set is determined by the second PSSCH resource and is the complete set of resources available for PSFCH feedback before the second PSSCH resource. There is no overlap between the second RB set and the third RB set in the frequency domain.
  • the third RB set is determined by the first PSSCH resource and is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is the number of timeslots associated with the current PSFCH after the PSFCH is sent. The number of time slots used for PSSCH transmission.
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH.
  • Resources, PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets There is a mapping relationship with the same PSSCH resource.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback opportunity is the last one in time order among the PSFCH feedback opportunities, and the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • the terminal 300 can implement each process implemented by the first terminal in the method embodiment shown in Figure 1, and can achieve the same beneficial effects. To avoid duplication, the details will not be described here.
  • Figure 9 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • the terminal is a second terminal.
  • terminal 400 includes:
  • the receiving module 401 is configured to receive feedback information sent by the first terminal based on the first number of PSFCH feedback opportunities;
  • Determining module 402 configured to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • the device also includes:
  • An execution module configured to execute the transmission of the second number of transmissions of the TB when it is determined that the first terminal fails to decode the TB transmitted with the first number of transmissions.
  • the determining module 402 is specifically used to:
  • the first terminal has The decoding of the TB transmitted by the first transmission number is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted by the first transmission number.
  • the determining module 402 is specifically used to:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the TB transmitted for the first time, and the first feedback information is at least one of the first number of PSFCH feedback opportunities. Feedback information corresponding to a PSFCH feedback opportunity; otherwise, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions.
  • the determining module 402 is specifically used to:
  • At least one feedback information indicating successful decoding is received from all terminals in the multicast group corresponding to the multicast in the first number of PSFCH feedback opportunities, it is determined that the first terminal has transmitted the first number of transmissions.
  • the TB decoding is successful; otherwise, it is determined that the first terminal fails to decode the TB transmitted for the first number of transmissions;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • the terminal 400 can implement each process implemented by the second terminal in the method embodiment shown in Figure 2, and can achieve the same beneficial effects. To avoid duplication, the details will not be described here.
  • An embodiment of the present disclosure also provides a first terminal, including: a processor, a memory, and a program stored on the memory and executable on the processor.
  • a processor a memory
  • a program stored on the memory and executable on the processor.
  • an embodiment of the present disclosure also provides a terminal.
  • the terminal is a first terminal, including a bus 501 , a transceiver 502 , an antenna 503 , a bus interface 504 , a processor 505 and a memory 506 .
  • the processor 505 is configured to determine a first number of physical side link feedback channel PSFCH feedback opportunities
  • the transceiver 502 is configured to send feedback information to the second terminal based on the first number of PSFCH feedback opportunities;
  • the first number of PSFCH feedback opportunities is the first physical side link shared channel
  • the feedback opportunity exists between the time slot where the PSSCH resource is located and the time slot where the second PSSCH resource is located.
  • the first PSSCH resource is the transmission resource when the number of transmissions of the transmission block TB is the first number of transmissions
  • the The second PSSCH resource is a transmission resource when the number of transmissions of the TB is a second number of transmissions
  • the first number is an integer greater than 1
  • the second number of transmissions is greater than the first number of transmissions and is equal to
  • the difference between the first number of transmissions is 1
  • the feedback information is the feedback information corresponding to the transmission of the first number of transmissions of the TB.
  • processor 505 is specifically used to:
  • channel access is performed at the first PSFCH feedback opportunity and the access fails, channel access is continued at the second PSFCH feedback opportunity to send feedback information to the second terminal, and the first PSFCH feedback opportunity is the first Any feedback opportunity among the number of PSFCH feedback opportunities, and the second PSFCH feedback opportunity is the next feedback opportunity of the first PSFCH feedback opportunity.
  • the transceiver 502 is specifically used for:
  • processor 505 is specifically used to:
  • the time-frequency resource corresponding to the third PSFCH feedback opportunity is determined based on the first PSSCH resource, and the third PSFCH feedback opportunity is the first PSFCH feedback opportunity in the first number of PSFCH feedback opportunities in time order.
  • the frequency domain resources corresponding to the fourth PSFCH feedback opportunity are the same as the frequency domain resources corresponding to the third PSFCH feedback opportunity.
  • the fourth PSFCH feedback opportunity is the first number of PSFCH feedback opportunities, except for all Any feedback opportunity other than the third PSFCH feedback opportunity mentioned above;
  • the time domain resources corresponding to the fourth PSFCH feedback opportunity are obtained by shifting the time domain resources of the third PSFCH feedback opportunity by a second number of PSFCH cycles, and the second number is determined based on the fourth PSFCH feedback opportunity.
  • the first number has a value of 2, and the first number of PSFCH feedback opportunities includes a fifth PSFCH feedback opportunity and a sixth PSFCH feedback opportunity;
  • the transceiver 502 is specifically used for:
  • the time-frequency resource corresponding to the fifth PSFCH feedback opportunity is determined based on the first PSSCH resource
  • the time-frequency resource corresponding to the sixth PSFCH feedback opportunity is determined based on the second PSSCH resource.
  • the time domain resource corresponding to the sixth PSFCH feedback opportunity is: before the time slot where the second PSSCH resource is located, and the last symbol of the PSFCH corresponding to the sixth PSFCH feedback opportunity is the same as the second
  • the interval between the first symbols of the PSSCH resource is greater than or equal to the first PSFCH resource of the target duration;
  • the target duration is the processing time used for PSFCH processing and PSSCH retransmission preparation.
  • the frequency domain resources corresponding to the sixth PSFCH feedback opportunity are determined based on the first resource block RB set, the first RB set is determined based on the second RB set and the number of first time slots, and the second RB
  • the set is determined by the second PSSCH resource and is the complete set of resources available for PSFCH feedback before the second PSSCH resource. There is no overlap between the second RB set and the third RB set in the frequency domain.
  • the third RB set is determined by the first PSSCH resource and is the complete set of resources available for PSFCH feedback after the first PSSCH resource.
  • the number of first time slots is the number of timeslots associated with the current PSFCH after the PSFCH is sent. The number of time slots used for PSSCH transmission.
  • each fourth RB set in the multiple fourth RB sets includes one PSFCH resources, and there is a mapping relationship between PSFCH resources included in at least two fourth RB sets in the plurality of fourth RB sets and the same PSSCH resource.
  • the feedback information is used to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions.
  • the interval between the last symbol of the PSFCH resource of the seventh PSFCH feedback opportunity and the time slot in which the second PSSCH resource is located is greater than or equal to the target duration, and the seventh PSFCH feedback opportunity is the first number
  • the PSFCH feedback opportunity is the last one in time order among the PSFCH feedback opportunities, and the target duration is the processing time for PSFCH processing and PSSCH retransmission preparation.
  • bus 501 may include any number of interconnected buses and bridges, bus 501 will include one or more processors represented by processor 505 and memory represented by memory 506 various circuits linked together. Bus 501 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all well known in the art and therefore will not be described further herein.
  • Bus interface 504 provides an interface between bus 501 and transceiver 502.
  • Transceiver 502 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium.
  • the data processed by the processor 505 is transmitted on the wireless medium through the antenna 503. Further, the antenna 503 also receives the data and transmits the data to the processor 505.
  • Processor 505 is responsible for managing bus 501 and general processing, and may also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • Memory 506 may be used to store data used by processor 505 when performing operations.
  • the processor 505 can be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or a programmable logic device. (Complex Programmable Logic Device, CPLD).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • Embodiments of the present disclosure also provide a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, each process of the feedback information sending method embodiment is implemented and the same can be achieved. To avoid repetition, the technical effects will not be repeated here.
  • the computer-readable storage medium is such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • An embodiment of the present disclosure also provides a terminal, which is a second terminal, including: a processor, a memory, and a program stored on the memory and executable on the processor, where the program is When the processor executes, each process of the above feedback information receiving method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, the details will not be described here.
  • an embodiment of the present disclosure also provides a terminal.
  • the terminal is a second terminal, including a bus 601 , a transceiver 602 , an antenna 603 , a bus interface 604 , a processor 605 and a memory 606 .
  • the transceiver 602 is configured to receive the first terminal's PSFCH feedback timing based on the first number. Send feedback information;
  • the processor 605 is configured to determine whether the first terminal successfully decodes the TB transmitted for the first number of transmissions based on the feedback information
  • the first number of PSFCH feedback opportunities are feedback opportunities that exist between the time slot where the first physical side link shared channel PSSCH resource is located and the time slot where the second PSSCH resource is located, and the first PSSCH resource is The transmission number of the transmission block TB is the transmission resource when the number of transmissions is the first number of transmissions, the second PSSCH resource is the transmission resource when the number of transmissions of the TB is the second number of transmissions, the first The number is an integer greater than 1, the second number of transmissions is greater than the first number of transmissions and the difference from the first number of transmissions is 1, and the feedback information is the transmission corresponding to the first number of transmissions of the TB feedback information.
  • processor 605 is also used to:
  • the first terminal fails to decode the TB transmitted with the first number of transmissions, perform transmission of the TB with the second number of transmissions.
  • processor 605 is specifically used to:
  • the last received feedback information indicates successful decoding, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions; otherwise, it is determined that the first terminal has decoded the TB transmitted for the first number of transmissions. fail.
  • processor 605 is specifically used to:
  • the received first feedback information indicates decoding failure, it is determined that the first terminal has failed to decode the TB transmitted for the first time, and the first feedback information is at least one of the first number of PSFCH feedback opportunities. Feedback information corresponding to a PSFCH feedback opportunity; otherwise, it is determined that the first terminal has successfully decoded the TB transmitted for the first number of transmissions.
  • processor 605 is specifically used to:
  • At least one feedback information indicating successful decoding is received from all terminals in the multicast group corresponding to the multicast in the first number of PSFCH feedback opportunities, it is determined that the first terminal has transmitted the first number of transmissions.
  • TB decoding is successful; otherwise, determine that the first terminal has the first number of transmissions Transmitted TB decoding failed;
  • the first terminal is a terminal in a multicast group corresponding to the multicast.
  • bus architecture (represented by bus 601), bus 601 may include any number of interconnected buses and bridges, bus 601 will include one or more processors represented by processor 605 and memory represented by memory 606 various circuits linked together. Bus 601 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all well known in the art and therefore will not be described further herein.
  • Bus interface 604 provides an interface between bus 601 and transceiver 602.
  • Transceiver 602 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium.
  • the data processed by the processor 605 is transmitted on the wireless medium through the antenna 603. Further, the antenna 603 also receives the data and transmits the data to the processor 605.
  • Processor 605 is responsible for managing bus 601 and general processing, and may also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory 606 may be used to store data used by processor 605 when performing operations.
  • the processor 605 can be a CPU, ASIC, FPGA or CPLD.
  • Embodiments of the present disclosure also provide a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, each process of the feedback information receiving method embodiment is implemented and the same can be achieved. To avoid repetition, the technical effects will not be repeated here.
  • the computer-readable storage medium is such as ROM, RAM, magnetic disk or optical disk.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present disclosure can be embodied in the form of a software product in essence or in other words, the part that contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes a number of instructions to enable a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc. ) performs the methods described in various embodiments of the present disclosure.

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Abstract

本公开提供一种反馈信息发送方法、反馈信息接收方法、终端及存储介质，涉及通信技术领域，反馈信息发送方法包括：确定第一数量的PSFCH反馈时机；基于第一数量的PSFCH反馈时机向第二终端发送反馈信息；其中，第一数量的PSFCH反馈时机为第一PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，第一PSSCH资源为在TB的传输次数为第一传输次数的情况下的传输资源，第二PSSCH资源为在TB的传输次数为第二传输次数的情况下的传输资源，第一数量为大于1的整数，第二传输次数大于第一传输次数且与第一传输次数的差值为1，反馈信息为TB的第一传输次数的传输对应的反馈信息。

Description

反馈信息发送方法、反馈信息接收方法、终端及存储介质
相关申请的交叉引用
本申请主张在2022年05月30日在中国提交的中国专利申请No.202210599235.1的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种反馈信息发送方法、反馈信息接收方法、终端及存储介质。
背景技术
在旁链路(也称为边链路)通信中，目前终端支持旁链路(sidelink，SL)反馈机制，旁链路反馈机制在传输块(Transport Block，TB)传输的两次传输之间仅有一次反馈时机，如果在该反馈时机，混合自动重传请求应答(Hybrid automatic repeat request acknowledgement，HARQ ACK)反馈信息未能发送成功，可能会导致系统性能下降。
发明内容
本公开实施例提供一种反馈信息发送方法、反馈信息接收方法、终端及存储介质，以解决现有由于旁链路反馈机制在TB传输的两次传输之间仅有一次反馈时机，如果在该反馈时机HARQ ACK反馈信息未能发送成功，可能会导致的系统性能下降的问题。
为解决上述技术问题，本公开是这样实现的：
第一方面，本公开实施例提供了一种反馈信息发送方法，应用于第一终端，所述方法包括：
确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机， 所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包括：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
可选地，所述方法还包括：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
可选地，所述确定第一数量的物理旁链路反馈信道PSFCH反馈时机，包括：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包 括：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
可选地，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的 PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
第二方面，本公开实施例提供了一种反馈信息接收方法，应用于第二终端，所述方法包括：
接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码之后，所述方法还包括：
在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时 机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
第三方面，本公开实施例提供一种终端，所述终端为第一终端，所述终端包括：
确定模块，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
发送模块，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述发送模块具体用于：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
可选地，所述发送模块具体还用于：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二 终端发送反馈信息。
可选地，所述确定模块具体用于：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述发送模块具体用于：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB 集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
可选地，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
第四方面，本公开实施例提供一种终端，所述终端为第二终端，所述终端包括：
接收模块，用于接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
确定模块，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述装置还包括：
执行模块，用于在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述确定模块具体用于：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
可选地，所述确定模块具体用于：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
可选地，所述确定模块具体用于：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
第五方面，本公开实施例提供一种终端，所述终端为第一终端，包括收发机和处理器，
所述处理器，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
所述收发机，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的 传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述处理器具体用于：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
可选地，所述收发机具体用于：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
可选地，所述处理器具体用于：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述收发机具体用于：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH 资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
可选地，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
第六方面，本公开实施例提供一种终端，所述终端为第二终端，包括收发机和处理器，
所述收发机，用于接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
所述处理器，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述处理器还用于：
在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述处理器具体用于：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
可选地，所述处理器具体用于：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
可选地，所述处理器具体用于：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第 一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
第七方面，本公开实施例提供一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现上述第一方面所述的反馈信息发送方法的步骤；或者所述程序被所述处理器执行时实现上述第二方面所述的反馈信息接收方法的步骤。
第八方面，本公开实施例提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现上述第一方面所述的反馈信息发送方法的步骤；或者所述计算机程序被处理器执行时实现上述第二方面所述的反馈信息接收方法的步骤。
本公开实施例中，确定第一数量的物理旁链路反馈信道PSFCH反馈时机；基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。这样，通过第一数量的PSFCH反馈时机向第二终端发送反馈信息，能够降低由于接入不成功导致的HARQ ACK反馈信息无法发送的概率，从而能够提高系统性能。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例提供的一种反馈信息发送方法的流程图；
图2是本公开实施例提供的一种SL-U场景示意图；
图3是本公开实施例提供的另一种SL-U场景示意图；
图4是本公开实施例提供的一种PSFCH时域资源确定方式示意图；
图5是本公开实施例提供的另一种PSFCH时域资源确定方式示意图；
图6是本公开实施例提供的PSFCH资源的多LBT带宽映射机制示意图；
图7是本公开实施例提供的一种反馈信息接收方法的流程图；
图8是本公开实施例提供的一种终端的结构示意图；
图9是本公开实施例提供的另一种终端的结构示意图；
图10是本公开实施例提供的另一种终端的结构示意图；
图11是本公开实施例提供的另一种终端的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
在本公开实施例中，终端可以是手机、平板电脑(Tablet Personal  Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(Augmented reality，AR)/虚拟现实(Virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端的具体类型。终端也可以称为用户设备(User Equipment，UE)。
为了便于更好地理解本公开实施例，下面先介绍以下技术点。
关于NR-U中的信道接入机制：
NR-U中，下一代基站(the next Generation Node B，gNB)/UE在进行下行(Downlink，DL)/上行(Uplink，UL)发送之前进行信道监听(如先听后说(Listen Before Talk，LBT))过程，如果信道接入成功，则gNB/UE可以在当前发送时机进行发送；否则，gNB/UE不能在当前发送时机进行发送。NR-U指工作于非授权频谱的NR(NR in Unlicensed Spectrum)。
关于NR-U中的多次反馈机制：
NR-U中，LBT失败可能会导致基站调度的物理上行控制信道(Physical Uplink Control Channel，PUCCH)反馈时机由于UE的信道接入不成功而没有进行反馈，此时UE会存储该反馈时机内的混合自动重传请求应答(Hybrid automatic repeat request acknowledgement，HARQ-ACK)比特，并在下次指示的PUCCH反馈时机到达时，将这两个时机对应的全部HARQ-ACK比特一起反馈。由于TB传输的两次传输之间仅有一次反馈时机，导致HARQ ACK反馈信息无法成功发送的概率较大。如果当前TB发送是单播或者ACK/NACK模式的组播，会导致第一终端进行不必要的重传，会造成额外的资源碰撞，进而影响系统的性能；如果当前TB发送是仅NACK(NACK only)模式的 组播，会导致部分未解码成功的终端无法获得重传数据包，会产生丢包，进而影响系统的性能。ACK是指肯定确认(Acknowledgement)，NACK是指否定确认(Negative Acknowledgement)。
本公开实施例中，提出了一种反馈信息发送方法、反馈信息接收方法、终端及存储介质，可以用于解决上述问题。
参见图1，图1是本公开实施例提供的一种反馈信息发送方法的流程图，用于第一终端，如图1所示，所述方法包括以下步骤：
步骤101、确定第一数量的物理旁链路反馈信道(Physical SideLink Feedback Channel，PSFCH)反馈时机。
其中，PSFCH反馈时机还可以称为PSFCH反馈机会，或者还可以称为PSFCH反馈发送时机，或者还可以称为PSFCH反馈发送机会，等等。
另外，第一终端可以是接收传输块(Transport Block，TB)的终端，可以简称为接收UE；该确定的PSFCH反馈时机用于向第二终端发送反馈信息。第二终端可以是发送TB的终端，可以简称为发送UE。第二终端向第一终端发送TB，进行TB的初传和重传。
另外，旁链路也可以称为边链路。
步骤102、基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息。
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道(Physical SideLink Shared Channel，PSSCH)资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数是第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数是第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
另外，该反馈信息可以是HARQ ACK反馈信息。该第一PSSCH资源及第二PSSCH资源可以是第二终端发送TB时的传输资源。
另外，所述第一数量的PSFCH反馈时机可以是k个PSFCH反馈时机，k 为大于1的整数。所述TB的传输次数为第一传输次数，可以是指所述TB的第n次传输；所述TB的传输次数为第二传输次数，可以是指所述TB的第n+1次传输，n为正整数。所述第一PSSCH资源可以是所述TB的第n次传输的传输资源，所述第二PSSCH资源可以是所述TB的第n+1次传输的传输资源。
需要说明的是，TB的第n次传输，也可以称为，TB的第n次发送。TB的第n+1次传输，也可以称为，TB的第n+1次发送。
另外，TB的第n(n<N)次发送对应的资源所在时隙和TB的第n+1次发送对应的资源所在时隙之间包含k(k>1)次PSFCH反馈时机，可以是指TB的第n(n<N)次发送对应的资源所在时隙和TB的第n+1次发送对应的资源所在时隙之间包含多个具有PSFCH资源的时隙。N为第二终端选择的用于一个TB的初传和重传的资源的总个数。
需要说明的是，终端支持在非授权频谱上进行旁链路(sidelink)通信，即支持SL-U场景，从而可以为旁链路通信提供更多的频谱资源，以支持更高速率及吞吐量的业务数据发送。在SL-U场景中，物理旁链路反馈信道(Physical SideLink Feedback Channel，PSFCH)接入可能不成功，会导致较大概率无法发送混合自动重传请求应答(Hybrid automatic repeat request acknowledgement，HARQ ACK)反馈信息。
进一步的，如图2所示，如果当前发送是单播或者ACK/NACK模式的组播，会导致第一终端进行不必要的重传，有可能会造成额外的资源碰撞；如图3所示，如果当前发送是仅NACK(NACK only)模式的组播，会导致部分未解码成功的终端无法获得重传数据包，产生了丢包的情况。
本公开实施例为Sidelink反馈信道的发送寻找了更多的发送时机，即第一数量的发送时机，尽可能的保证HARQ-ACK反馈信息的发送，降低了PSFCH没有发送导致的额外资源碰撞的概率，且降低了PSFCH没有发送导致没有进行重传的概率，能够提高系统性能以及可靠性。
作为一个具体的实施例，在第二终端完成资源选择过程后，假设一共选择了N个资源用于一个TB的初传和重传。若TB的第n(n<N)次发送对应的资源所在时隙和TB的第n+1次发送对应的资源所在时隙之间包含k(k>1)次 PSFCH反馈时机，且第一终端在第m(1≤m<k)次PSFCH反馈时机尝试信道接入失败，则可以在第m+1次PSFCH反馈时机继续尝试信道接入。该k次PSFCH反馈时机满足：k次PSFCH反馈时机中的首个PSFCH反馈时机所在时域与第n次发送对应的资源所在时隙之间间隔大于等于预设间隔，该预设间隔可以是时间间隔sl-MinTimeGapPSFCH；且第n+1次发送对应的资源所在时隙和第k次PSFCH反馈时机的PSFCH资源的最后一个符号(symbol)间隔大于或等于一个用于PSFCH处理(processing)和PSSCH重传准备的处理时间(processing time)。该processing time可以是PSFCH接收和处理旁链路重传准备所需的时间，包括必要物理信道的复用和任何TX-RX/RX-TX切换时间(a time required for PSFCH reception and processing plus sidelink retransmission preparation including multiplexing of necessary physical channels and any TX-RX/RX-TX switching time)。该processing time由第二终端实现确定。
本公开实施例中，确定第一数量的物理旁链路反馈信道PSFCH反馈时机；基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。这样，通过第一数量的PSFCH反馈时机向第二终端发送反馈信息，能够降低由于接入不成功导致的HARQ ACK反馈信息无法发送的概率，从而能够提高系统性能。
可选地，所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包括：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机， 所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
一种实施方式中，所述第一数量的PSFCH反馈时机可以包括k个PSFCH反馈时机，该所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，可以包括：
在第m个PSFCH反馈时机进行信道接入且接入失败的情况下，在第m+1个PSFCH反馈时机继续进行信道接入，m为大于等于1，且小于k的整数；
在第m+1个PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送TB的第n次传输的反馈信息。TB的第n(n<N)次发送对应的资源所在时隙和TB的第n+1次发送对应的资源所在时隙之间包含k(k>1)次PSFCH反馈时机。
该实施方式中，在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，能够在进行信道接入失败的情况下通过下一个PSFCH反馈时机继续进行信道接入，从而能够降低由于接入不成功导致的HARQ ACK反馈信息无法发送的概率，从而能够提高系统性能。
可选地，所述方法还包括：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
该实施方式中，在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息，这样，能够通过第一数量的PSFCH反馈时机中进行信道接入且接入成功的反馈时机发送反馈信息，从而能够降低由于接入不成功导致的HARQ ACK反馈信息无法发送的概率，从而能够提高系统性能。
可选地，所述确定第一数量的物理旁链路反馈信道PSFCH反馈时机，包括：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
其中，所述第一数量的PSFCH反馈时机按时间排序，可以是按时间先后 顺序排序，时间靠前的排序在前，时间靠后的排序在后。
该实施方式中，基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，能够从时域上增加PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
其中，所述第二数量可以是第四PSFCH反馈时机在所述第一数量的PSFCH反馈时机中按时间排序的排序位数减一。例如，第四PSFCH反馈时机可以是第i个PSFCH反馈时机，则第二数量的值为i-1。
一种实施方式中，所述第一数量的PSFCH反馈时机可以包括k个PSFCH反馈时机，所述k个PSFCH反馈时机中第i个PSFCH反馈时机对应的频域资源与第1个PSFCH反馈时机对应的频域资源相同，i为大于1的整数；
和/或，
所述第i个PSFCH反馈时机对应的时域资源基于所述第一个PSFCH反馈时机的时域资源平移i-1个PSFCH周期获得。
作为一种具体的实施例，可以通过TB的第n次传输对应的PSSCH资源，确定k个PSFCH反馈时机中的首个PSFCH反馈时机对应的时频资源。对于后续的PSFCH反馈时机，PSFCH反馈时机对应的频域资源可以与该首个PSFCH反馈时机对应的资源相同；PSFCH反馈时机对应的时域资源可以如下确定：如图4所示，对于第k次PSFCH反馈时机，其PSFCH时域资源由首个PSFCH反馈时机的时间上向后平移(k-1)个PSFCH周期(假设为P)获得。
另外，通过TB的第n次传输对应的PSSCH资源，确定该首个PSFCH反馈时机对应的时频资源的方式可以如方式一。
方式一：
PSFCH时域资源确定：如图5所示，在资源池(resource pool)内配置 PSFCH周期为N(sl-PSFCH-Period)，且配置一个参数K(sl-MinTimeGapPSFCH)，第二终端发送PSSCH的时隙为n，则第一终端在时隙m进行反馈，时隙m≥n+k，且包含PSFCH资源。
PSFCH频域/码域资源确定：根据第二终端所使用的PSSCH资源在当前PSFCH负责反馈的所有时隙(slot)的索引，以及其使用的起始/所有子信道(sub-channel)，首先确定PSFCH所使用的物理资源块(Physical Resource Block，PRB)集(set)。然后，根据第二终端所指示的资源(source)标识(Identifier，ID)，以及在ACK/NACK模式的组播(groupcast)场景下的成员(member)ID所产生的偏移(offset)，在资源块(Resource Block，RB)set内找到具体所使用的PSFCH资源。具体的，对于一个使用PSFCH负责反馈的slot中的slot i，以及对应的sub-channel索引(index)为j，所分配的PRB set中包含的PRB index为： PRB set的大小为其中0≤j＜Nsubch，为一个PSFCH发送所对应的之前的用于PSSCH发送的slot个数；Nsubch为资源池中包含的sub-channel个数，为资源池内配置的所有可用于PSFCH的PRB资源，也可以称为PSFCH资源集的全集。然后，再通过计算在PRB set中的具体哪个PSFCH资源用于承载当期反馈信息，其中，为在一个PRB set中包含的PSFCH资源总数，多个PSFCH资源在PRB set中先从最低index的PRB到更高index的PRB进行升序映射，然后再通过不同的序列循环移位进行升序映射。
需要说明的是，Nsubch可以变换为Ninterlace，即其代表的含义可以由resource pool内的子信道(sub-channel)个数转换为resource pool内的编结(interlace)个数。可以对应的转换为
需要说明的是，Sidelink中，由于缺乏基站调度而会产生的额外资源碰撞问题，以及为了降低终端确定PSFCH反馈信道资源的复杂度，PSFCH资源是通过与PSSCH数据信道资源通过映射关系获得的。
该实施方式中，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同；和/或，所述第四PSFCH反馈时机对应的时 域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，能够从时域上增加PSFCH反馈时机。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包括：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块(Resource block，RB)集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
其中，所述第一RB集可以是第二RB集可以是第一时隙个数可以是第一RB集可以为：
其中，Nsubch为资源池中包含的sub-channel个数。
需要说明的是，第一RB集，即可以为每一个PSFCH发送所对应的之后的用于PSSCH发送的slot，以及资源池(resource pool)中的每一个subchannel对应的PRB集合。第二RB集，即可以为由第n+1次发送TB对应的PSSCH资源确定的，在所述PSSCH资源之前的可用于PSFCH反馈的资源的全集。第三RB集可以为由第n次发送TB对应的PSSCH资源确定的，在所述PSSCH资源之后的可用于PSFCH反馈的资源全集。
作为一种具体的实施例，第一终端只在确定的两次PSFCH反馈时机对接收到的TB的第n次传输进行反馈。可以通过TB的第n次传输对应的PSSCH资源，确定第五PSFCH反馈时机对应的时频资源。通过TB的第n次传输对应的PSSCH资源，确定第五PSFCH反馈时机对应的时频资源的方式，可以与通过TB的第n次传输对应的PSSCH资源，确定首个PSFCH反馈时机对应的时频资源的方式相同，即采用上述方式一确定。
另外，对于第六PSFCH反馈时机对应的时频资源，通过TB的第n+1次传输对应的PSSCH资源确定。第六PSFCH反馈时机对应的时域资源，可以是TB的第n+1次传输对应的PSSCH资源所在时隙之前的，满足与最后一个符号(symbol)之间间隔大于目标时长的倒数第一个PSFCH资源。第六PSFCH反馈时机对应的频域资源的确定，可以是根据TB的第n+1次传输对应的PSSCH资源，确定具体的PSFCH RB set，进而确定具体的PSFCH资源。
示例地，根据TB的第n+1次传输对应的PSSCH资源，确定具体的PSFCH RB set，进而确定具体的PSFCH资源的过程可以如下：
根据TB的第n+1次传输对应的PSSCH资源在当前PSFCH负责反馈的所有slot的索引，以及其使用的起始/所有subchannel，首先确定PSFCH所使用的PRB set。然后，根据第二终端所指示的source ID，以及在ACK/NACK模式的groupcast场景下的member ID所产生的offset，在RB set内找到具体所使用的PSFCH资源。具体的，对于一个使用PSFCH负责反馈的slot中的slot i，以及对应的sub-channel index为j，所分配的PRB set中包含的PRB index为： PRB set的大小为其中 0≤j＜Nsubch，为一个与PSFCH资源集合(union)完全正交，即不重叠的资源集合，为一个PSFCH发送所对应的之后的用于PSSCH发送的slot个数；Nsubch为资源池中包含的sub-channel个数。然后，再通过计算在PRB set中的具体哪个PSFCH资源用于承载当期反馈信息，其中，为在一个PRB set中包含的PSFCH资源总数，多个PSFCH资源在PRB set中先从最低index的PRB到更高index的PRB进行升序映射，然后再通过不同的序列循环移位进行升序映射。
需要说明的是，Nsubch可以变换为Ninterlace，即其代表的含义可以由resource pool内的sub-channel个数转换为resource pool内的interlace个数。可以对应的转换为
可选地，在所述第一终端的旁链路带宽部分(Sidelink Bandwidth Part，SL BWP)或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
需要说明的是，第四RB集也可以称为话前侦听(Listen Before Talk，LBT)带宽，图6展示了PSFCH资源的多LBT带宽映射机制，如图6所示，当第一终端的SL BWP或资源池(resource pool)包含多个LBT带宽(即第四RB集)时，第二终端的PSSCH资源可以通过一个LBT带宽映射到多个PSFCH资源，每个LBT带宽中均包含一个具有映射关系的PSFCH资源，即映射关系以及RB union是以每(per)LBT带宽定义的。若PSFCH资源是通过与PSSCH数据信道资源通过映射关系获得，获得的PSFCH资源可以扩展到多个LBT带宽上，获得的多个PSFCH资源在每个LBT带宽上的相对频域位置相同。第四RB集中的PSFCH资源可以为PSFCH反馈时机对应的资源。
另外，确定PSFCH反馈时机对应的时频资源的方式可以如下：
可以针对每个LBT带宽(即第四RB集)确定PSFCH时域资源及PSFCH频域/码域资源。
PSFCH时域资源确定：如图5所示，在资源池(resource pool)内配置PSFCH周期为N(sl-PSFCH-Period)，且配置一个参数K(sl-MinTimeGapPSFCH)，第二终端发送PSSCH的时隙为n，则第一终端在时隙m进行反馈，时隙m≥n+k， 且包含PSFCH资源。
PSFCH频域/码域资源确定：根据第二终端所使用的PSSCH资源在当前PSFCH负责反馈的所有时隙(slot)的索引，以及其使用的起始/所有子信道(subchannel)，首先确定每个LBT带宽中PSFCH所使用的物理资源块(Physical Resource Block，PRB)集(set)。然后，根据第二终端所指示的资源(source)ID，以及在ACK/NACK模式的组播(groupcast)场景下的成员(member)ID所产生的偏移(offset)，在资源块(Resource Block，RB)set内找到每个LBT带宽具体所使用的PSFCH资源。具体的，对于一个使用PSFCH负责反馈的slot中的slot i，以及对应的sub-channel索引(index)为j，每个LBT带宽所分配的PRB set中包含的PRB index为： PRB set的大小为其中0≤j＜Nsubch，为一个PSFCH发送所对应的之前的用于PSSCH发送的slot个数；Nsubch为资源池中包含的sub-channel个数，为资源池内配置的所有可用于PSFCH的PRB资源，也可以称为PSFCH资源集的全集。然后，再通过计算在每个LBT带宽的PRB set中的具体哪个PSFCH资源用于承载当期反馈信息，其中，为在一个PRB set中包含的PSFCH资源总数，多个PSFCH资源在PRB set中先从最低index的PRB到更高index的PRB进行升序映射，然后再通过不同的序列循环移位进行升序映射。
该实施方式中，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系，从而能够从频域上增加PSFCH反馈机会。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
参见图7，图7是本公开实施例提供的一种反馈信息接收方法的流程图，用于第二终端，如图7所示，所述方法包括以下步骤：
步骤201、接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
步骤202、基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
一种实施方式中，第二终端可以综合k个PSFCH反馈时机内接收到的第一终端的反馈信息，确定第n次发送TB的反馈结果，即第一终端对TB的译码结果。
需要说明的是，本实施例作为与图1所示的实施例中对应的第二终端的实施方式，其具体的实施方式可以参见图1所示的实施例的相关说明，为了避免重复说明，本实施例不再赘述，且还可以达到相同有益效果。
本公开实施例中，接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。这样，能够降低由于第一终端接入不成功导致的HARQ ACK反馈信息无法发送的概率。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码之后，所述方法还包括：
在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
作为一种具体的实施例，在单播(unicast)的情况下，即第一终端接收到的旁链路控制信息(Sidelink Control Information，SCI)格式(format)2-A中的特性类型指示(cast type indicator)域指示的值为“10”的情况下，第二终端根据接收到的最后一次反馈信息确定第一终端是否对第n次传输的TB译码成功。若该最后一次反馈信息为“ACK”，则第二终端认为第一终端对第n次传输的TB译码成功，第二终端清空对应SL进程(process)的缓存(buffer)；若该最后一次反馈信息为“NACK”，或者第二终端在所有的PSFCH反馈时机中都没有收到第一终端的反馈信息，则第二终端认为第一终端对第n次传输的TB译码失败，第二终端继续进行对TB的第n+1次的传输，从而进行该TB的重传。
该实施方式中，在单播的情况下，通过第一数量的PSFCH反馈时机发送的反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，能够降低PSFCH没有发送导致的额外资源碰撞的概率。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对 第一传输次数传输的TB译码成功。
作为一种具体的实施例，该第一模式的组播可以是NACK only模式的组播。在NACK only模式的组播的情况下，即第一终端接收到的SCI format 2-A中的cast type indicator域指示的值为“11”的情况下，若第二终端在所有的PSFCH反馈时机中都没有接收到第一终端的反馈信息，则第二终端认为第一终端对第n次传输的TB译码成功，第二终端清空对应SL process的buffer；否则，第二终端认为第一终端对第n次传输的TB译码失败，第二终端继续进行对TB的第n+1次的传输，从而进行该TB的重传。
该实施方式中，在第一模式的组播的情况下，通过第一数量的PSFCH反馈时机发送的反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，能够降低PSFCH没有发送导致没有进行重传的概率。
可选地，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
作为一种具体的实施例，该第二模式的组播可以是ACK/NACK模式的组播(groupcast)。在ACK/NACK模式的组播的情况下，即第一终端接收到的SCI format 2-A中的cast type indicator域指示的值为“01”的情况下，仅当第二终端在至少一个PSFCH反馈时机接收到组播组内的全部终端反馈的“ACK”时，第二终端认为第一终端对第n次传输的TB译码成功，第二终端清空对应SL process的buffer；否则，第二终端认为第一终端对第n次传输的TB译码失败，第二终端继续进行对TB的第n+1次的传输，从而进行该TB的重传。
该实施方式中，在第二模式的组播的情况下，通过第一数量的PSFCH反馈时机发送的反馈信息确定所述第一终端是否对第一传输次数传输的TB成 功译码，能够降低PSFCH没有发送导致的额外资源碰撞的概率。
参见图8，图8是本公开实施例提供的一种终端的结构示意图，所述终端为第一终端，如图8所示，终端300包括：
确定模块301，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
发送模块302，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述发送模块302具体用于：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
可选地，所述发送模块302具体还用于：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
可选地，所述确定模块301具体用于：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述发送模块302具体用于：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
可选地，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源 与同一个PSSCH资源存在映射关系。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
终端300能够实现图1所示的方法实施例中第一终端实现的各个过程，且能达到相同有益效果，为避免重复，这里不再赘述。
参见图9，图9是本公开实施例提供的一种终端的结构示意图，所述终端为第二终端，如图9所示，终端400包括：
接收模块401，用于接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
确定模块402，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述装置还包括：
执行模块，用于在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述确定模块402具体用于：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第 一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
可选地，所述确定模块402具体用于：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
可选地，所述确定模块402具体用于：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
终端400能够实现图2所示的方法实施例中第二终端实现的各个过程，且能达到相同有益效果，为避免重复，这里不再赘述。
本公开实施例还提供了一种第一终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现上述反馈信息发送方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
具体的，参见图10所示，本公开实施例还提供了一种终端，所述终端为第一终端，包括总线501、收发机502、天线503、总线接口504、处理器505和存储器506。
所述处理器505，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
所述收发机502，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道 PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述处理器505具体用于：
在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
可选地，所述收发机502具体用于：
在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
可选地，所述处理器505具体用于：
基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
可选地，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时机外的任意一个反馈时机；
和/或，
所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
可选地，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
所述收发机502具体用于：
基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发 送反馈信息。
可选地，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
和/或
所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
可选地，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
可选地，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
可选地，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
可选地，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
可选地，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
在图10中，总线架构(用总线501来代表)，总线501可以包括任意数量的互联的总线和桥，总线501将包括由处理器505代表的一个或多个处理器和存储器506代表的存储器的各种电路链接在一起。总线501还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口504在总线501和收发机502之间提供接口。收发机502可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器505处理的数据通过天线503在无线介质上进行传输，进一步，天线503还接收数据并将数据传送给处理器505。
处理器505负责管理总线501和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器506可以被用于存储处理器505在执行操作时所使用的数据。
可选的，处理器505可以是中央处理单元(Central Processing Unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或可编程逻辑器件(Complex Programmable Logic Device，CPLD)。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述反馈信息发送方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本公开实施例还提供了一种终端，所述终端为第二终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现上述反馈信息接收方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
具体的，参见图11所示，本公开实施例还提供了一种终端，所述终端为第二终端，包括总线601、收发机602、天线603、总线接口604、处理器605和存储器606。
所述收发机602，用于接收第一终端基于第一数量的PSFCH反馈时机发 送的反馈信息；
所述处理器605，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
可选地，所述处理器605还用于：
在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
可选地，所述处理器605具体用于：
在单播的情况下：
若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
可选地，所述处理器605具体用于：
在第一模式的组播的情况下：
若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
可选地，所述处理器605具体用于：
在第二模式的组播的情况下：
若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数 传输的TB译码失败；
其中，所述第一终端为所述组播对应的组播组内的终端。
在图11中，总线架构(用总线601来代表)，总线601可以包括任意数量的互联的总线和桥，总线601将包括由处理器605代表的一个或多个处理器和存储器606代表的存储器的各种电路链接在一起。总线601还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口604在总线601和收发机602之间提供接口。收发机602可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器605处理的数据通过天线603在无线介质上进行传输，进一步，天线603还接收数据并将数据传送给处理器605。
处理器605负责管理总线601和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器606可以被用于存储处理器605在执行操作时所使用的数据。
可选的，处理器605可以是CPU、ASIC、FPGA或CPLD。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述反馈信息接收方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如ROM、RAM、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (23)

  1. 一种反馈信息发送方法，应用于第一终端，所述方法包括：
    确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
    基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  2. 根据权利要求1所述的方法，其中，所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包括：
    在第一PSFCH反馈时机进行信道接入且接入失败的情况下，在第二PSFCH反馈时机继续进行信道接入以向第二终端发送反馈信息，所述第一PSFCH反馈时机为所述第一数量的PSFCH反馈时机中的任意一个反馈时机，所述第二PSFCH反馈时机为所述第一PSFCH反馈时机的下一个反馈时机。
  3. 根据权利要求2所述的方法，所述方法还包括：
    在所述第二PSFCH反馈时机进行信道接入且接入成功的情况下，向第二终端发送反馈信息。
  4. 根据权利要求1所述的方法，其中，所述确定第一数量的物理旁链路反馈信道PSFCH反馈时机，包括：
    基于所述第一PSSCH资源确定第三PSFCH反馈时机对应的时频资源，所述第三PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于首个的PSFCH反馈时机。
  5. 根据权利要求4所述的方法，其中，第四PSFCH反馈时机对应的频域资源与所述第三PSFCH反馈时机对应的频域资源相同，所述第四PSFCH反馈时机为所述第一数量的PSFCH反馈时机中，除所述第三PSFCH反馈时 机外的任意一个反馈时机；
    和/或，
    所述第四PSFCH反馈时机对应的时域资源基于所述第三PSFCH反馈时机的时域资源平移第二数量的PSFCH周期获得，所述第二数量基于所述第四PSFCH反馈时机确定。
  6. 根据权利要求1所述的方法，其中，所述第一数量的值为2，所述第一数量的PSFCH反馈时机包括第五PSFCH反馈时机及第六PSFCH反馈时机；
    所述基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息，包括：
    基于所述第五PSFCH反馈时机及第六PSFCH反馈时机，向第二终端发送反馈信息。
  7. 根据权利要求6所述的方法，其中，所述第五PSFCH反馈时机对应的时频资源基于所述第一PSSCH资源确定；
    和/或
    所述第六PSFCH反馈时机对应的时频资源基于所述第二PSSCH资源确定。
  8. 根据权利要求7所述的方法，其中，所述第六PSFCH反馈时机对应的时域资源为：在所述第二PSSCH资源所在时隙之前，且所述第六PSFCH反馈时机对应的PSFCH的最后一个符号与所述第二PSSCH资源的第一个符号之间的间隔大于或等于目标时长的第一个PSFCH资源；
    其中，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
  9. 根据权利要求7所述的方法，其中，所述第六PSFCH反馈时机对应的频域资源基于第一资源块RB集确定，所述第一RB集基于第二RB集及第一时隙个数确定，所述第二RB集为由所述第二PSSCH资源确定的，在所述第二PSSCH资源之前的可用于PSFCH反馈的资源的全集，所述第二RB集与第三RB集在频域上无重叠，所述第三RB集为由所述第一PSSCH资源确定的，在所述第一PSSCH资源之后的可用于PSFCH反馈的资源的全集，所述第一时隙个数为PSFCH发送之后的与当前PSFCH关联的用于PSSCH发送的时隙个数。
  10. 根据权利要求1所述的方法，其中，在所述第一终端的旁链路带宽部分SL BWP或资源池包含多个第四RB集的情况下，所述多个第四RB集中每个第四RB集均包含一个PSFCH资源，所述多个第四RB集中至少两个第四RB集包含的PSFCH资源与同一个PSSCH资源存在映射关系。
  11. 根据权利要求1所述的方法，其中，所述反馈信息用于确定所述第一终端是否对第一传输次数传输的TB成功译码。
  12. 根据权利要求1所述的方法，其中，第七PSFCH反馈时机的PSFCH资源的最后一个符号与所述第二PSSCH资源所在的时隙之间的间隔大于或等于目标时长，所述第七PSFCH反馈时机为所述第一数量的PSFCH反馈时机中按时间排序位于最后一个的PSFCH反馈时机，所述目标时长为用于PSFCH处理和PSSCH重传准备的处理时间。
  13. 一种反馈信息接收方法，应用于第二终端，所述方法包括：
    接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
    基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  14. 根据权利要求13所述的方法，其中，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码之后，所述方法还包括：
    在确定所述第一终端对第一传输次数传输的TB译码失败的情况下，执行所述TB的第二传输次数的传输。
  15. 根据权利要求13所述的方法，其中，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
    在单播的情况下：
    若最后一次接收到的反馈信息指示成功译码，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败。
  16. 根据权利要求13所述的方法，其中，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
    在第一模式的组播的情况下：
    若接收到的第一反馈信息指示译码失败，则确定所述第一终端对第一次数传输的TB译码失败，所述第一反馈信息为所述第一数量的PSFCH反馈时机中至少一个PSFCH反馈时机对应的反馈信息；否则，确定所述第一终端对第一传输次数传输的TB译码成功。
  17. 根据权利要求13所述的方法，其中，所述基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码，包括：
    在第二模式的组播的情况下：
    若在所述第一数量的PSFCH反馈时机中接收到所述组播对应的组播组内的全部终端的至少一次反馈信息指示译码成功，则确定所述第一终端对第一传输次数传输的TB译码成功；否则，确定所述第一终端对第一传输次数传输的TB译码失败；
    其中，所述第一终端为所述组播对应的组播组内的终端。
  18. 一种终端，所述终端为第一终端，所述终端包括：
    确定模块，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
    发送模块，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  19. 一种终端，所述终端为第二终端，所述终端包括：
    接收模块，用于接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
    确定模块，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  20. 一种终端，所述终端为第一终端，包括收发机和处理器，
    所述处理器，用于确定第一数量的物理旁链路反馈信道PSFCH反馈时机；
    所述收发机，用于基于所述第一数量的PSFCH反馈时机向第二终端发送反馈信息；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  21. 一种终端，所述终端为第二终端，包括收发机和处理器，
    所述收发机，用于接收第一终端基于第一数量的PSFCH反馈时机发送的反馈信息；
    所述处理器，用于基于所述反馈信息确定所述第一终端是否对第一传输次数传输的TB成功译码；
    其中，所述第一数量的PSFCH反馈时机为第一物理旁链路共享信道 PSSCH资源所在的时隙与第二PSSCH资源所在的时隙之间存在的反馈时机，所述第一PSSCH资源为在传输块TB的传输次数为所述第一传输次数的情况下的传输资源，所述第二PSSCH资源为在所述TB的传输次数为第二传输次数的情况下的传输资源，所述第一数量为大于1的整数，所述第二传输次数大于所述第一传输次数且与所述第一传输次数的差值为1，所述反馈信息为所述TB的第一传输次数的传输对应的反馈信息。
  22. 一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求1至12中任一项所述的反馈信息发送方法的步骤；或者，所述程序被所述处理器执行时实现如权利要求13至17中任一项所述的反馈信息接收方法的步骤。
  23. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至12中任一项所述的反馈信息发送方法的步骤；或者所述计算机程序被处理器执行时实现如权利要求13至17中任一项所述的反馈信息接收方法的步骤。
PCT/CN2023/096473 2022-05-30 2023-05-26 反馈信息发送方法、反馈信息接收方法、终端及存储介质 WO2023231910A1 (zh)

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WO2021159435A1 (en) * 2020-02-14 2021-08-19 Qualcomm Incorporated Reservation periodicity for nr v2x periodic scheduling
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CN114009070A (zh) * 2021-09-27 2022-02-01 北京小米移动软件有限公司 一种反馈信息传输方法、装置及存储介质

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CN113709869A (zh) * 2020-05-21 2021-11-26 维沃移动通信有限公司 资源确定、传输、反馈方法、发送端和接收端
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