WO2020220793A1 - 一种通信方法和装置 - Google Patents

一种通信方法和装置 Download PDF

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Publication number
WO2020220793A1
WO2020220793A1 PCT/CN2020/075485 CN2020075485W WO2020220793A1 WO 2020220793 A1 WO2020220793 A1 WO 2020220793A1 CN 2020075485 W CN2020075485 W CN 2020075485W WO 2020220793 A1 WO2020220793 A1 WO 2020220793A1
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Prior art keywords
information
data
signal quality
indication information
indicate
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PCT/CN2020/075485
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English (en)
French (fr)
Inventor
黎超
张兴炜
黄海宁
杨帆
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20799349.4A priority Critical patent/EP3965334B1/en
Publication of WO2020220793A1 publication Critical patent/WO2020220793A1/zh
Priority to US17/513,652 priority patent/US20220052798A1/en

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    • 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
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • V2V, V2P, and V2I/N are collectively referred to as V2X (vehicle to everything, V2X), that is, the vehicle communicates with everything.
  • V2X vehicle to everything
  • 5G New Radio (NR) V2X in order to meet transmission reliability requirements, the distance between transceivers needs to be determined.
  • the base station can send a positioning reference signal to achieve positioning between the base station and the terminal within a certain accuracy range.
  • the address location information of the transmitter or receiver may be lost due to various reasons. Therefore, according to the existing method, the receiver cannot determine the distance between the transmitter and the receiver on the side link based on the geographic location information, which affects the transmission efficiency of the service.
  • the embodiments of the present application provide a communication method and device, which can improve service transmission efficiency and communication reliability when geographic location information of a transmitter or receiver is lost.
  • a communication method includes: a first device acquires first indication information; the first device sends the first indication information and first data to a second device, and the first The indication information includes first information, and the first information is used to instruct the second device to feed back hybrid automatic repeat request HARQ information to the first data based on the distance information, and/or to instruct the second device to respond to the first data based on the signal quality information. Data feedback HARQ information.
  • the first device acquires the HARQ information of the second device and feeds back the first data to the first device, so that the first device can instruct the second device to switch between multiple feedback methods. This method can be applied to More scenarios improve the reliability of communication between transmitter and receiver.
  • the foregoing method further includes: the foregoing first device acquiring first configuration information, where the first configuration information is used to indicate the foregoing first indication information; Or, the first device obtains channel quality information, and the first device obtains the first indication information according to the channel quality information. Based on this solution, the first device can determine the feedback mode of the second device according to the first configuration information or channel quality information sent by the network device.
  • the foregoing method further includes: the foregoing first device acquiring second configuration information, where the second configuration information includes one or more sets of quality of service parameters , And one or more signal quality thresholds corresponding to each group of service quality parameters; the one or more groups of service quality parameters include the service quality parameters of the first data.
  • the first device can receive the correspondence between the service quality parameter and the signal quality threshold sent or pre-configured by the network device.
  • the foregoing method further includes: the first device determines that the service quality parameter of the first data corresponds to the service quality parameter of the first data according to the service quality parameter of the first data
  • the first signal quality threshold value is one of the above one or more signal quality threshold values
  • the signal quality threshold value corresponding to the first data is the first signal quality threshold value. Limit. Based on this solution, the first device can determine the signal quality threshold corresponding to the service quality parameter of the first data according to the corresponding relationship between the service quality parameter and the signal quality threshold.
  • the foregoing method further includes: the foregoing first device acquiring third configuration information, where the third configuration information includes one or more power parameters, and One or more signal quality thresholds corresponding to each power parameter; the one or more power parameters include the power parameter when the first device sends the first data. Based on this solution, the first device can receive the correspondence between the power parameter and the signal quality threshold sent or pre-configured by the network device.
  • the foregoing method further includes: the first device determines the first device according to a power parameter when the first device sends the first data The second signal quality threshold value corresponding to the power parameter when the first data is sent, the second signal quality threshold value being one of the above one or more signal quality threshold values, the signal quality threshold value corresponding to the above first data The limit is the second signal quality threshold. Based on this solution, the first device can determine the signal quality threshold corresponding to the power parameter when the first device sends the first data according to the correspondence between the power parameter and the signal quality threshold.
  • a communication method includes: a second device obtains first indication information, the first indication information includes first information, and the first information is used to instruct the second device based on The distance information feeds back hybrid automatic repeat request HARQ information to the first data, and/or instructs the second device to feed back HARQ information to the first data based on the signal quality information; the second device receives the first data sent by the first device. Data; the second device feeds back the HARQ information of the first data to the first device according to the first indication information. Based on this solution, the second device acquires the HARQ information of the first data back to the first device by the second device, so that the second device can switch between multiple feedback methods according to the first indication information. This method is applicable In more scenarios, the reliability of communication between transmitter and receiver is improved.
  • the above method further includes: the above second device acquires fifth configuration information, where the fifth configuration information includes one or more sets of quality of service parameters, and each set of quality of service parameters One or more signal quality thresholds corresponding to the parameters; the one or more sets of service quality parameters include the service quality parameters of the first data. Based on this solution, the second device can receive the correspondence between the service quality parameter and the signal quality threshold sent or pre-configured by the network device.
  • the second The device feeding back HARQ information to the first device according to the first indication information includes: the second device determines the first signal quality threshold corresponding to the service quality parameter of the first data according to the service quality parameter of the first data, The first signal quality threshold is one of the one or more signal quality thresholds, the signal quality threshold corresponding to the first data is the first signal quality threshold; the second device is based on the above The signal quality information and the first signal quality threshold are fed back to the HARQ information to the first device.
  • the second device can determine the signal quality threshold corresponding to the service quality parameter of the first data according to the corresponding relationship between the service quality parameter and the signal quality threshold, and based on the threshold and signal quality information Feed back HARQ information to the first device.
  • the foregoing method further includes: the foregoing second device acquiring sixth configuration information, where the sixth configuration information includes one or more power parameters, and One or more signal quality thresholds corresponding to each power parameter; the one or more power parameters include the power parameter when the first device sends the first data. Based on this solution, the second device can receive the corresponding relationship between the power parameter and the signal quality threshold sent or pre-configured by the network device.
  • the second device Feeding back HARQ information to the first device according to the first indication information includes: the second device obtains the corresponding second signal quality threshold value according to the power parameter when the first device sends the first data, and the second device
  • the signal quality threshold is one of the above one or more signal quality thresholds, the signal quality threshold corresponding to the first data is the second signal quality threshold; the second device is based on the above signal quality information and The second signal quality threshold value feeds back HARQ information to the first device.
  • the second device can determine the signal quality threshold corresponding to the power parameter when the first device sends the first data according to the corresponding relationship between the power parameter and the signal quality threshold, and based on the threshold and The signal quality information feeds back HARQ information to the first device.
  • a communication device in a third aspect of the embodiments of the present application, includes: a processing unit and a communication unit; the processing unit is configured to obtain first instruction information through the communication unit; and send the first instruction information and the first instruction information to a second device.
  • First data the first indication information includes first information, and the first information is used to instruct the second device to feed back hybrid automatic repeat request HARQ information to the first data based on the distance information, and/or to instruct the second device
  • the HARQ information is fed back to the first data based on the signal quality information.
  • the foregoing processing unit is further configured to: obtain first configuration information through a communication unit, where the first configuration information is used to indicate the foregoing first instruction Information; or, obtain channel quality information, and obtain the first indication information according to the channel quality information.
  • the foregoing processing unit is further configured to: obtain second configuration information through the communication unit, where the second configuration information includes one or more sets of services Quality parameters, and one or more signal quality thresholds corresponding to each group of service quality parameters; the one or more groups of service quality parameters include the service quality parameters of the first data.
  • the processing unit is further configured to determine the first data corresponding to the service quality parameter of the first data according to the service quality parameter of the first data.
  • a signal quality threshold where the first signal quality threshold is one of the one or more signal quality thresholds, and the signal quality threshold corresponding to the first data is the first signal quality threshold .
  • the foregoing processing unit is further configured to: obtain third configuration information through the communication unit, where the third configuration information includes one or more power parameters , And one or more signal quality thresholds corresponding to each power parameter; the one or more power parameters include the power parameter when the communication device sends the first data.
  • the processing unit is further configured to determine that the communication device sends the first data according to the power parameter when the communication unit sends the first data
  • the second signal quality threshold value corresponding to the power parameter at the time the second signal quality threshold value is one of the above one or more signal quality threshold values
  • the signal quality threshold value corresponding to the above first data is the The second signal quality threshold.
  • a communication device in a fourth aspect of the embodiments of the present application, includes a processing unit and a communication unit; the processing unit is configured to obtain first indication information through the communication unit, where the first indication information includes first information, The first information is used to instruct the second device to feed back HARQ information of the hybrid automatic repeat request to the first data based on the distance information, and/or to instruct the second device to feed back HARQ information to the first data based on the signal quality information; receiving; The first data sent by the first device; and the HARQ information of the first data is fed back to the first device according to the first indication information.
  • the foregoing method further includes: the foregoing processing unit is further configured to obtain fifth configuration information through the communication unit, where the fifth configuration information includes one or more sets of quality of service parameters, And one or more signal quality thresholds corresponding to each group of service quality parameters; the one or more groups of service quality parameters include the service quality parameters of the first data.
  • the foregoing processing unit is further configured to determine the first data corresponding to the first data quality of service parameters according to the first data quality of service parameters.
  • a signal quality threshold where the first signal quality threshold is one of the one or more signal quality thresholds, and the signal quality threshold corresponding to the first data is the first signal quality threshold;
  • the processing unit is specifically configured to feed back HARQ information to the first device through the communication unit according to the signal quality information and the first signal quality threshold.
  • the foregoing processing unit is further configured to obtain sixth configuration information through the communication unit, where the sixth configuration information includes one or more power parameters, And one or more signal quality thresholds corresponding to each power parameter; the one or more power parameters include the power parameter when the first device sends the first data.
  • the processing unit is further configured to obtain the corresponding second signal according to the power parameter when the first device sends the first data A quality threshold, the second signal quality threshold is one of the one or more signal quality thresholds, and the signal quality threshold corresponding to the first data is the second signal quality threshold;
  • the processing unit is specifically further configured to feed back HARQ information to the first device through the communication unit according to the signal quality information and the second signal quality threshold.
  • the distance information is the distance between the first device and the second device
  • the signal quality information is the foregoing
  • the second device receives the signal quality information of the signal sent by the first device. Based on this solution, the second device can feed back the HARQ of the first data to the first device based on the distance between the first device and the second device, and/or the second device receives the signal quality information of the signal sent by the first device information.
  • the first data is sent in a time slot in which the first device sends the first indication information.
  • the first device may send the first data in the time slot in which the first device sends the first indication information.
  • the first indication information includes a first field, and different values of the first field are used to indicate the second
  • the device feeds back HARQ information to the first data based on the distance information, and/or instructs the second device to feed back HARQ information to the first data based on the signal quality information.
  • the first field in the first indication information can be used to indicate different feedback modes for the second device.
  • the foregoing first information is further used to indicate that the foregoing second device does not feed back HARQ information to the foregoing first data.
  • the feedback mode of the second device also includes not feeding back HARQ information of the first data to the first device.
  • the different value of the first field is also used to instruct the second device not to feed back HARQ information to the first data .
  • the value of the first field may also indicate that the second device does not feed back the HARQ information of the first data to the first device.
  • the first indication information further includes second information, and the second information is used to indicate that the first information is valid. Based on this solution, different values of the second information may indicate that the first information is valid and the first information is not valid.
  • the first information not valid means that the second device may not feed back HARQ information to the first data.
  • the aforementioned signal quality includes: reference signal received power RSRP, reference signal received quality RSRQ, received signal strength indicator RSSI, and Any one or more of the signal to interference plus noise ratio SINR.
  • the second device can feed back HARQ information of the first data to the first device based on one or more of RSRP, RSRQ, RSSI, and SINR.
  • the signal quality may be the quality of the physical layer.
  • the above-mentioned signal quality may be RSRP, RSRQ, and RSSI sampled and filtered by a higher layer, which is not limited by the embodiments of the present application.
  • the foregoing HARQ information includes: sending an acknowledgement ACK without sending a negative response NACK, or sending a negative response NACK without sending ACK, or, send ACK or NACK.
  • the second device feeds back the HARQ of the first data to the first device, it can send only ACK, or only NACK, or send ACK or NACK.
  • the receiver successfully decodes the first data
  • it sends ACK
  • it does not send ACK or NACK
  • No ACK is sent.
  • the receiver fails to decode the first data it sends NACK; or, when the receiver successfully decodes the first data, it sends ACK.
  • the receiver fails to decode the first data it sends NACK.
  • the first indication information further includes third information
  • the third information is used to indicate the transmission of the first data One or more of the number of times, the time domain relationship indication information between multiple transmissions of the first data, and the frequency domain relationship indication information between multiple transmissions of the first data.
  • the third information can be indicated when the first device instructs the second device not to feed back HARQ of the first data to the first device.
  • the number of transmissions N of the first data may be one or more of 1, 2, 4, and 8.
  • the third information may indicate the number N of transmissions of the first data.
  • the indication information of the time domain interval between the transmissions of two or more adjacent first data may be indicated by the third information.
  • the indication information of the frequency domain resource interval between the transmissions of two or more adjacent first data may be indicated by the third information.
  • the above-mentioned third information is also used to indicate frequency hopping parameters.
  • the foregoing first indication information further includes fourth information, and the fourth information is used to indicate the location of the foregoing first device .
  • the second device can determine the distance between the first device and the second device according to the location of the first device.
  • the foregoing fourth information is further used to indicate the minimum communication distance of the foregoing first data.
  • the second device can feed back the first device to the first device according to the position between the first device and the second device and the minimum communication distance.
  • HARQ information of a data For example, when the distance between the second device and the first device is less than or equal to the minimum communication distance, the second device determines to feed back HARQ information according to the receiving state of the first data; otherwise, the second device does not feed back HARQ information.
  • a joint field may be used, or two or more different fields may be used to indicate.
  • the above-mentioned first indication information further includes fifth information, and the fifth information is used to indicate the information corresponding to the above-mentioned first data Signal quality threshold.
  • the second device can feed back the HARQ information of the first data to the first device according to the signal quality threshold corresponding to the first data and the signal quality information.
  • the above-mentioned first indication information includes a second field, and different values of the second field are used to indicate the fourth information or Fifth information.
  • the foregoing fourth information and fifth information can be multiplexed with the second field in the first indication information.
  • the value of the second field is different, the information indicated by the second field is different.
  • the foregoing first indication information includes a third field, and different values of the third field are used to indicate the third Information or fourth information or fifth information.
  • the third information, the fourth information, and the fifth information can be multiplexed with the third field in the SCI.
  • the value of the third field is different, the information indicated by the third field is different.
  • the above-mentioned first indication information includes a fourth field
  • the first indication information further includes eighth information
  • the The eighth information is used to indicate that the information indicated by the fourth field is the third information or the fourth information or the fifth information.
  • the third information, the fourth information, and the fifth information can be multiplexed with the fourth field in the SCI, and the eighth information can be used to determine which information the fourth field indicates.
  • the first information when the first information is used to indicate that the second device does not feed back HARQ information to the first data, the first The four fields are used to indicate the third information; when the first information is used to instruct the second device to feed back HARQ information to the first data based on the distance information, the fourth field is used to indicate the fourth information; when the first information When the second device is used to indicate the HARQ information to the first data based on the signal quality information, the fourth field is used to indicate the fifth information.
  • the third information, the fourth information, and the fifth information can be multiplexed with the fourth field in the SCI, and the first information can be used to determine which information the fourth field indicates.
  • the first indication information further includes sixth information, and the sixth information is used to instruct the first device to send the The power parameter for the first data; the power parameter includes: a transmission power change value, a transmission power value, or a margin value of the transmission power. Based on this solution, the first device can send the power parameter when the first device transmits the first data to the second device.
  • the second aspect, the third aspect, or the fourth aspect in a possible implementation manner, different values of the second field are used to indicate the fourth information or the sixth information.
  • the fourth information and the sixth information can be multiplexed with the second field in the first indication information.
  • the value of the second field is different, the information indicated by the second field is different.
  • the third aspect or the fourth aspect in a possible implementation manner, different values of the third field are used to indicate the third information or the fourth information or the sixth information.
  • the third information, the fourth information, and the sixth information can be multiplexed with the third field in the SCI.
  • the value of the third field is different, the information indicated by the third field is different.
  • the above-mentioned first indication information further includes ninth information, and the ninth information is used to indicate that the fourth field indicates
  • the information is third information or fourth information or sixth information.
  • the third, fourth, and sixth information can reuse the fourth field in the SCI, and the ninth information can be used to determine which information the fourth field indicates.
  • the foregoing first information when the foregoing first information is used to indicate that the second device does not feed back HARQ information to the foregoing first data, the foregoing The fourth field is used to indicate the third information; when the first information is used to instruct the second device to feed back HARQ information to the first data based on the distance information, the fourth field is used to indicate the fourth information; when the first One piece of information is used to indicate that when the second device feeds back HARQ information to the first data based on the signal quality information, the fourth field is used to indicate sixth information.
  • the third information, the fourth information, and the sixth information can be multiplexed with the fourth field in the SCI, and the first information can be used to determine which information the fourth field indicates.
  • the first indication information further includes seventh information, and the seventh information is used to indicate the service of the first data.
  • Quality parameter includes one or more of priority information, delay information, reliability information, and data packet size.
  • one or more of the first configuration information, the second configuration information, and the third configuration information are carried in the system information block SIB, radio resource control RRC signaling or pre-configured signaling.
  • the configuration information can be received through SIB, RRC signaling or pre-configured signaling.
  • the fifth configuration information and/or the sixth configuration information are carried in the system information block SIB, radio resource control RRC signaling or pre-configured signaling .
  • the configuration information can be received through SIB, RRC signaling or pre-configured signaling.
  • the above-mentioned first information, second information, third information, fourth information, fifth information, and sixth information are carried in the side link control information SCI.
  • one or more of the first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth information can be carried in the SCI.
  • the first information is made by the explicit signaling in the SCI, the channel format of the SCI, or the transmission of the SCI
  • the third information, the fourth information, the fifth information, the sixth information, or some of the bits in the seventh information Bits are carried in SCI, and another part of bits are carried in MAC messages, RRC messages or application layer messages.
  • part of the third, fourth, fifth, sixth, or seventh information can be carried in the SCI, and the other part can be carried in the SCI.
  • MAC message, RRC message or application layer message due to the limited number of bits in the SCI, part of the third, fourth, fifth, sixth, or seventh information can be carried in the SCI, and the other part can be carried in the SCI.
  • one of the third, fourth, fifth, sixth, and seventh information are carried in MAC messages, RRC messages or application layer messages. Based on this solution, due to the limited bits in the SCI, one or more of the third, fourth, fifth, sixth, and seventh information can be carried in the MAC message, RRC message, or application layer In the message, to save the signaling overhead in the SCI.
  • a communication method includes: a first device obtains second indication information; the first device sends the second indication information and first data to a second device, and the second The indication information includes tenth information, and the tenth information is used to instruct the second device to feed back the HARQ information of the hybrid automatic repeat request to the first data based on the distance information, or to instruct the second device not to feed back the HARQ information to the first data.
  • the first device acquires the HARQ information of the second device and feeds back the first data to the first device, so that the first device can instruct the second device to switch between different feedback methods. This method can be applied to More scenarios improve the reliability of communication between transmitter and receiver.
  • the above method further includes: the first device obtains seventh configuration information, where the seventh configuration information is used to indicate the second indication information; or, the first device obtains Channel quality information, and obtain the foregoing second indication information according to the channel quality information. Based on this solution, the first device can determine the feedback mode of the second device according to the seventh configuration information or channel quality information sent by the network device.
  • a sixth aspect of the embodiments of the present application provides a communication method, the method includes: a second device acquires second indication information, the second indication information includes tenth information, and the tenth information is used to instruct the second device to The distance information feeds back hybrid automatic repeat request HARQ information to the first data, or instructs the second device not to feed back HARQ information to the first data; the second device receives the first data sent by the first device; the second device The HARQ information of the first data is fed back to the first device according to the second indication information, or the HARQ information of the first data is not fed back to the first device.
  • the second device acquires the HARQ information that it feeds back the first data to the first device, so that the second device can switch between multiple feedback methods according to the second indication information.
  • This method can be applied to more Multiple scenarios improve the reliability of communication between transmitter and receiver.
  • a communication device which includes: a processing unit and a communication unit; the processing unit is configured to obtain second instruction information through the communication unit; and send the second instruction information to a second device And the first data, the second indication information includes tenth information, and the tenth information is used to instruct the second device to feed back the HARQ information of the hybrid automatic repeat request to the first data based on the distance information, or to instruct the second device not to Data feedback HARQ information.
  • the foregoing method further includes: the foregoing processing unit, configured to obtain seventh configuration information through the communication unit, where the seventh configuration information is used to indicate the foregoing second indication information; or, Acquire channel quality information, and acquire the foregoing second indication information according to the channel quality information.
  • a communication device in an eighth aspect of the embodiments of the present application, includes: a processing unit and a communication unit; the processing unit is configured to obtain second indication information through the communication unit, where the second indication information includes tenth information, The tenth information is used to instruct the second device to feed back HARQ information of the hybrid automatic repeat request to the first data based on the distance information, or to instruct the second device not to feed back HARQ information to the first data; to receive the HARQ information sent by the first device First data; feedback the HARQ information of the first data to the first device according to the second indication information, or not feedback the HARQ information of the first data to the first device.
  • the foregoing distance information is the distance between the foregoing first device and the second device.
  • the second device can feed back the HARQ information of the first data to the first device based on the distance between the first device and the second device.
  • the first data is sent in a time slot in which the first device sends the second indication information. Based on this solution, the first device can send the first data in the time slot in which the first device sends the second indication information.
  • the foregoing second indication information includes a first field, and different values of the first field are used to indicate the first field.
  • the second device feeds back HARQ information to the first data based on the distance information, or instructs the second device not to feed back HARQ information to the first data.
  • the first field in the second indication information can be used to indicate different feedback modes for the second device.
  • the seventh configuration information is carried in a system information block SIB, radio resource control RRC signaling or pre-configured signaling. Based on this solution, the configuration information can be received through SIB, RRC signaling or pre-configured signaling.
  • the second indication information further includes eleventh information, and the eleventh information is used to indicate the first data One or more of the number of transmissions of the first data, the indication information of the time domain relationship between multiple transmissions of the first data, and the indication information of the frequency domain relationship between the multiple transmissions of the first data.
  • the eleventh information can be indicated when the first device instructs the second device not to feed back HARQ of the first data to the first device.
  • the number of transmissions N of the first data may be one or more of 1, 2, 4, and 8.
  • the eleventh information may indicate the number N of transmissions of the first data.
  • the indication information of the time domain interval between the transmissions of two or more adjacent first data may be indicated by the eleventh information.
  • the indication information of the frequency domain resource interval between the transmissions of two or more adjacent first data may be indicated by the eleventh information.
  • the above-mentioned eleventh information is also used to indicate frequency hopping parameters.
  • the HARQ information feedback includes: sending an acknowledgement ACK but not sending a negative acknowledgement NACK, or sending a negative acknowledgement NACK not Send ACK, or, send ACK or NACK.
  • the second device when it feeds back the HARQ of the first data to the first device, it can send only ACK, or only NACK, or send ACK or NACK.
  • the receiver successfully decodes the first data
  • it sends ACK
  • it does not send ACK or NACK
  • No ACK is sent.
  • the receiver fails to decode the first data it sends NACK; or, when the receiver successfully decodes the first data, it sends ACK.
  • the receiver fails to decode the first data it sends NACK.
  • the second indication information further includes twelfth information, and the twelfth information is used to indicate the first device s position. Based on this solution, by indicating the location of the first device in the second indication information, the second device can determine the distance between the first device and the second device according to the location of the first device.
  • the above-mentioned twelfth information is further used to indicate the minimum communication distance of the above-mentioned first data.
  • the second device can feed back the first device to the first device according to the position between the first device and the second device and the minimum communication distance.
  • HARQ information of a data when the above-mentioned twelfth information is used to indicate the location of the first device and the minimum communication distance of the first data at the same time, a joint field may be used, or two or more different fields may be used to indicate.
  • the second indication information includes a second field, and different values of the second field are used to indicate the tenth One information or the twelfth information above. Based on this solution, the above-mentioned eleventh information and twelfth information can be multiplexed with the second field in the second indication information. When the value of the second field is different, the information indicated by the second field is different.
  • the second indication information includes a third field
  • the second indication information further includes thirteenth information.
  • the thirteen information is used to indicate that the information indicated by the third field is the eleventh information or the twelfth information. Based on this solution, the above-mentioned eleventh information and twelfth information can reuse the third field in the second indication information, and the thirteenth information can be used to determine which information the third field indicates.
  • the third field indicates the twelfth information; when the tenth information is used to indicate that the second device does not feed back HARQ information for the first data, the third field indicates the eleventh information.
  • the eleventh information and the twelfth information can reuse the third field in the SCI, and the tenth information can be used to determine which information the third field indicates.
  • one of the tenth, eleventh, twelfth, and thirteenth information Or more are carried in the side link control information SCI. Based on this solution, one or more of the tenth, eleventh, twelfth, and thirteenth information can be carried in the SCI.
  • some bits of the eleventh information and/or twelfth information are carried in the SCI, and the other part of the bits Bits are carried in MAC messages, RRC messages, or application layer messages.
  • part of the eleventh and/or twelfth information can be carried in the SCI, and the other part of the bits can be carried in the MAC message, RRC message or application layer message in.
  • the eleventh information and/or the twelfth information are carried in a MAC message, an RRC message, or an application layer message. Based on this solution, due to the limited bits in the SCI, the eleventh information and/or the twelfth information can be carried in the MAC message, RRC message, or application layer message to save the signaling overhead in the SCI.
  • the foregoing third aspect and various implementation manners of the third aspect may refer to the description of the corresponding effects of the first aspect and various implementation manners of the first aspect
  • the foregoing fourth aspect and various implementation manners of the fourth aspect may refer to the second aspect.
  • the effect description of the foregoing seventh aspect and the various implementation manners of the seventh aspect may refer to the corresponding effects of the fifth aspect and the fifth aspect.
  • Description, the description of the effects of the above-mentioned eighth aspect and various implementation manners of the eighth aspect and the sixth aspect and various implementation manners of the sixth aspect will not be repeated here.
  • a ninth aspect of the embodiments of the present application provides a computer storage medium having computer program code stored in the computer storage medium, and when the computer program code runs on a processor, the processor executes any of the above The communication method described in the aspect.
  • the tenth aspect of the embodiments of the present application provides a computer program product that stores computer software instructions executed by the above-mentioned processor, and the computer software instructions include a program for executing the solution described in the above-mentioned aspect.
  • An eleventh aspect of the embodiments of the present application provides a communication device, which includes a transceiver, a processor, and a memory.
  • the transceiver is used to send and receive information or to communicate with other network elements;
  • the memory is used to store Computer-executable instructions;
  • a processor for executing the computer-executable instructions to implement the communication method described in any of the above aspects.
  • the twelfth aspect of the embodiments of the present application provides a communication device, which exists in the form of a chip product.
  • the structure of the device includes a processor and may also include a memory.
  • the memory is used for coupling with the processor and storing The necessary program instructions and data of the device, the processor is used to execute the program instructions stored in the memory, so that the device executes the method described in any of the above aspects.
  • the thirteenth aspect of the embodiments of the present application provides a communication device, which exists in the form of a chip product.
  • the structure of the device includes a processor and an interface circuit.
  • the processor is used to communicate with other devices through a receiving circuit.
  • the device is caused to execute the method described in any of the above aspects.
  • the fourteenth aspect of the embodiments of the present application provides a terminal device, which includes the foregoing aspects and related implementation modes.
  • the terminal device can be used as one or more components or units built into the vehicle's vehicle module, vehicle module, vehicle component, vehicle chip or vehicle unit.
  • the vehicle can be built in the vehicle module, vehicle module, vehicle component, vehicle chip or vehicle.
  • the terminal device in the unit implements the method described in any of the above aspects.
  • the fifteenth aspect of the embodiments of the present application provides a system including the device of the third aspect and related implementation manners, and the device of the fourth aspect and related implementation manners.
  • the sixteenth aspect of the embodiments of the present application provides a system, including the device of the seventh aspect and related implementation manners, and the device of the eighth aspect and related implementation manners.
  • FIG. 1 is a schematic diagram of a V2X communication scenario provided by an embodiment of this application.
  • FIG. 2 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of the composition of a first device provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of the composition of a second device provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of the composition of another first device provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of the composition of another second device provided by an embodiment of this application.
  • a, b, or c can mean: a, b, c, a and b, a and c, b and c, or, a and b and c, where a, b and c c can be single or multiple.
  • words such as “first” and “second” are used to distinguish the same items or similar items that have substantially the same function and effect. Those skilled in the art can understand that words such as “first” and “second” do not limit the number and execution order. For example, the "first" in the first device and the "second” in the second device in the embodiment of the present application are only used to distinguish different devices.
  • the embodiment of the present application provides a communication method, which is applied in the V2X communication scenario shown in FIG. 1.
  • the first device and the second device communicate through a side link (Sidelink, SL).
  • the side link refers to the auxiliary link in the V2X network.
  • the V2X network also There are uplink (uplink) and downlink (downlink).
  • V2X communication includes vehicle-to-vehicle communication (Vehicle-to-Vehicle, V2V), vehicle-to-infrastructure communication (Vehicle-to-Infrastructure, V2I), vehicle-to-people communication (Vehicle to People, V2P), And the communication between the vehicle and the application server (Vehicle-to-Network, V2N), etc.
  • FIG. 1 only takes V2V communication in which both the first device and the second device are vehicles as an example for illustration, and the embodiment of the present application does not limit the specific communication scenario of V2X.
  • the first device and the second device can communicate with each other between the vehicle-mounted equipment and the vehicle-mounted equipment, or between the road side unit (RSU) and the vehicle-mounted equipment and/or network equipment (such as base station equipment). Communication can also be communication between network equipment (such as base station equipment) and vehicle-mounted equipment and/or RSU, etc.
  • the network equipment (which can be LTE base station equipment or NR base station equipment or a base station in a subsequent evolution system. It is understandable, The embodiments of this application do not limit the specific forms of the first device and the second device, which are merely exemplary descriptions.
  • the wireless access network device in FIG. 1 may be a base station or provide a wireless access Devices in the incoming network.
  • the communication method provided in this application can be applied not only to the side link shown in FIG. 1 but also to the cellular link.
  • the embodiments of this application do not limit the application scenarios of the communication method. This is only an exemplary illustration.
  • the first device and the second device in the embodiments of the present application are communication devices, and the communication devices may be terminal devices or network devices.
  • the first device is a network device
  • the aforementioned side link may be a link between the base station and the base station.
  • the link between the macro base station and the macro base station or the link between the macro base station and the small base station, or the link between the main base station and the secondary base station, or the link between the main base station and the main base station
  • the link between the secondary base station and the secondary base station is not limited by the embodiment of the present application, for example, the link between the secondary base station and the secondary base station, etc.
  • FIG. 2 is a communication device provided by an embodiment of this application.
  • the communication device may be the first device or the second device in this application.
  • the communication device may be a vehicle; it may also be an on-vehicle communication device or an on-board terminal, or a chip in an on-vehicle communication device or an on-board terminal that is installed on the vehicle to assist the driving of the vehicle; One or more components or units in a group, on-board component, on-board chip, or on-board unit.
  • the vehicle-mounted terminal may be a device used to implement wireless communication functions, such as a terminal or a chip that can be used in the terminal.
  • the terminal may be a user equipment (User Equipment, UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station in a 5G network or a public land mobile network (PLMN) that will evolve in the future.
  • UE User Equipment
  • PLMN public land mobile network
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices or wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial) Wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc.
  • the vehicle-mounted terminal can be mobile or fixed.
  • the communication device 200 includes at least one processor 201, a memory 202, a transceiver 203, and a communication bus 204.
  • the processor 201 is the control center of the communication device, and may be a processor or a collective name for multiple processing elements.
  • the processor 201 is a central processing unit (CPU), or a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • microprocessors digital signal processor, DSP
  • field programmable gate arrays Field Programmable Gate Array, FPGA
  • the processor 201 can execute various functions of the communication device by running or executing a software program stored in the memory 202 and calling data stored in the memory 202.
  • the processor 201 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 2.
  • the communication device may include multiple processors, such as the processor 201 and the processor 205 shown in FIG. 2.
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • the processor here may refer to one or more communication devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the memory 202 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other optical disc storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory 202 may exist independently and is connected to the processor 201 through a communication bus 204.
  • the memory 202 may also be integrated with the processor 201.
  • the memory 202 is used to store a software program for executing the solution of the present invention, and the processor 201 controls the execution.
  • the transceiver 203 is used to communicate with other communication devices.
  • the transceiver 203 can also be used to communicate with a communication network, such as Ethernet, radio access network (RAN), wireless local area network (Wireless Local Area Networks, WLAN), etc.
  • the transceiver 203 may include a receiving unit to implement a receiving function, and a sending unit to implement a sending function.
  • the communication bus 204 may be an industry standard architecture (ISA) bus, an external communication device interconnection (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus.
  • ISA industry standard architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in FIG. 2, but it does not mean that there is only one bus or one type of bus.
  • the structure of the communication device shown in FIG. 2 does not constitute a limitation on the communication device, and may include more or fewer components than shown in the figure, or a combination of some components, or a different component arrangement.
  • the distance between the transceivers is within the minimum communication distance range to ensure the reliability of data transmission.
  • the address location information of the transmitter the first device in the embodiment of this application
  • the receiver the second device in the embodiment of this application
  • the geographic location information determines the distance between the transmitter and the receiver on the side link, which affects the transmission efficiency of the service.
  • an embodiment of the present application provides a The communication method can instruct the receiver to switch the feedback mode through the signaling sent by the transmitter and improve the reliability of data transmission.
  • the communication method includes steps S301-S305.
  • the first device obtains first indication information.
  • the first indication information includes first information, and the first information is used to instruct the second device to feed back Hybrid Automatic Repeat reQuest (HARQ) information to the first data based on the distance information, and/or indicate the second
  • the device feeds back HARQ information to the first data based on the signal quality information.
  • the first data is data sent by the first device, and the second device is a device that receives the first data.
  • the first device is a transmitter when sending first data
  • the second device is a receiver when receiving first data.
  • the first information may also be used to instruct the second device not to feed back HARQ information to the first data.
  • the foregoing distance information may be the distance between the first device and the second device.
  • the foregoing signal quality information may be signal quality information of a signal sent by the first device and received by the second device.
  • it can be the signal quality of the first data sent by the first device received by the second device, or the signal quality of the first indication information sent by the first device received by the second device, or it can be The signal quality of the reference signal sent in the time slot of a data, or the signal quality of the signal for a period of time before the first device sends the first data, or the degree of channel congestion, etc.
  • This embodiment of the application does not deal with this Limited, this is only an exemplary description.
  • the second device may be a device, a group of devices, or an unlimited number of devices.
  • the correspondence may be unicast-based communication, or multicast-based communication, or broadcast-based communication. This application does not restrict this.
  • the foregoing signal quality may include: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indication (RSSI), and Any one or more of the signal to interference plus noise ratio (SINR).
  • the SINR refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference).
  • the aforementioned signal quality may be the quality of the physical layer.
  • the RSRP of the physical layer such as L1-RSRP
  • the RSRQ of the physical layer such as L1-RSRQ
  • the RSSI of the physical layer such as L1-RSSI
  • SINR SINR of the physical layer
  • the foregoing first information is used to instruct the second device to feed back HARQ information to the first data based on the distance between the first device and the second device, or to instruct the second device to perform the first data based on the signal quality corresponding to the first data.
  • One data feeds back HARQ information, or instructs the second device to feed back HARQ information to the first data based on the distance between the first device and the second device and the signal quality corresponding to the first data, or instructs the second device to based on the first device
  • the distance to the second device feeds back HARQ information to the first data and feeds back HARQ information to the first data based on the signal quality corresponding to the first data, or instructs the second device not to feed back HARQ information to the first data.
  • obtaining the first indication information by the first device may include: obtaining the first configuration information by the first device, where the first configuration information is used to indicate the first indication information.
  • the first configuration information may be configuration information sent by the base station. It is understandable that in this implementation manner, the base station may configure the feedback mode of the second device and send the configuration to the first device. The first device may determine the specific feedback mode according to the configuration of the base station.
  • the first configuration information may be instructed by the third device to the first device through signaling, and the third device may be a device performing sideline communication.
  • the first configuration information may be pre-configured.
  • the first device may receive first configuration information configured by the base station, and the first configuration information may include feeding back HARQ information to the first data based on distance information, and/or feeding back HARQ information to the first data based on signal quality information ,
  • the first device determines the first indication information according to the first configuration information configured by the base station. For example, when the location information of the first device is lost or invalid or feedback based on signal quality is prioritized, the first device may determine that the first information in the first indication information is used to instruct the second device to feed back the first data based on the signal quality information HARQ information.
  • the first configuration information may be indicated by a base station instruction (for example, System Information Block (SIB) or RRC signaling), or may be indicated by another terminal device performing sidelink communication (for example, through RRC signaling). , Medium Access Control (Medium Access Control, MAC) messages and other instructions), which is not limited in the embodiment of the present application.
  • the MAC message may be an indication such as a MAC control element (CE).
  • CE MAC control element
  • the RRC signaling may be RRC signaling common to the UE.
  • the first configuration information can be carried in a message sent by the third device, it can be indicated by RRC signaling of the side link of the UE.
  • acquiring the first indication information by the first device may include: the first device acquiring channel quality information, and the first device determines the first indication information according to the channel quality information.
  • the channel quality information may be the degree of congestion of the channel
  • the first device may determine the first indication information by receiving the degree of congestion of the channel sent by the base station. For example, when the channel is congested, the first information may be determined to indicate that the second device does not feed back HARQ information to the first data; or when the channel is not congested, the first information may be determined to indicate that the second device feeds back the first data.
  • the channel when the channel is congested, it is also possible to determine that the first information is used to instruct the second device to feed back HARQ information based on the distance between the first device and the second device, or instruct the second device not to feed back HARQ information to the first data; When the channel is not congested, it may be determined that the first information is used to instruct the second device to feed back HARQ information based on the signal quality corresponding to the first data.
  • the embodiment of the present application does not limit the specific rule for the first device to determine the first indication information according to the channel quality information, and this is only an exemplary description.
  • the first device acquiring the first indication information may include: the first device acquiring the location of the first device, if the first device cannot acquire the location of the first device, the first device determines the first indication information It is used to instruct the second device to feed back HARQ information to the first data based on the signal quality corresponding to the first data, or to instruct the second device not to feed back HARQ information to the first data.
  • the first device determines that the first indication information is used to instruct the second device to feed back HARQ information to the first data based on the distance between the first device and the second device, or to indicate the first
  • the second device feeds back HARQ information to the first data based on the distance between the first device and the second device and feeds back the HARQ information to the first data based on the signal quality corresponding to the first data.
  • the location of the above-mentioned first device may be the geographic location of the first device, and the geographic location of the first device may refer to location coordinates obtained based on satellites, such as global positioning system (Global Positioning System, GPS) coordinates. It can be Beidou position coordinates, etc.
  • the location of the first device may also be location information obtained based on other positioning systems or positioning technologies, such as location information obtained based on inertial navigation, location information obtained based on radar, and location obtained based on positioning signals between the network device and the UE Information, etc., this embodiment of the application does not limit this. It is understandable that the reason why the first device cannot obtain its own location may include that the current location of the first device is not covered by the network, or the network signal is poor, which is not limited in the embodiment of the present application.
  • the embodiment of the present application does not limit the specific manner in which the first device obtains the first indication information, and this is only an exemplary description.
  • the first device may also acquire and determine the first indication information according to whether the feedback resource is sufficient, whether it is congested, etc.
  • the manner of feeding back the HARQ information includes: sending an Acknowledgement (ACK) and not sending a Negative Acknowledgement (NACK), for example, when the receiver demodulates the first data and the decoding result is correct, send ACK, when the receiver demodulates the decoding result of the first data, neither ACK nor NACK is sent; or, when the receiver demodulates the decoding result of the first data, NACK is not sent. When it is correct, no ACK is sent.
  • ACK Acknowledgement
  • NACK Negative Acknowledgement
  • NACK is sent; or, ACK or NACK is sent, for example, when the receiver demodulates the first data and the decoding result is correct .
  • Send ACK when the receiver demodulates the first data and the decoding result is wrong, send NACK. That is, feeding back HARQ information includes sending only ACK, or sending only NACK, or sending ACK or NACK.
  • the foregoing HARQ information feedback manner may be configured or pre-configured by a network device (for example, a base station device).
  • the network device may indicate the specific way of feeding back HARQ through signaling.
  • the first device and/or the second device may perform feedback according to the specific HARQ feedback mode configured by the base station.
  • the first device can determine multiple feedback modes of the second device, and use signaling to send the first indication information to the second device, so that the second device’s feedback modes can be in multiple ways. Switching between feedback modes can be applied to more scenarios and improve the reliability of communication between transmitter and receiver.
  • the first device sends the first indication information and the first data to the second device.
  • the first device may send the first indication information and the first data in a multicast, unicast, or broadcast manner.
  • the first device may send the first indication information and first data to one second device (unicast scenario), and the first device may also send the first indication information and first data to multiple second devices (multicast scenario).
  • the first device can also send the first indication information and the first data to an unlimited number of second devices (broadcast scenes).
  • the second device may be an explicit receiver of the first device, or may be unknown or unclear to the first device The receiver is not limited in this embodiment of the application.
  • the first indication information and the first data may be sent at the same time or at different times. This is not the case in this embodiment of the application.
  • the first data may be sent in a time slot in which the first device sends the first indication information.
  • the first data may be sent before or after the time slot in which the first device sends the first indication information.
  • the first indication information may be information used to indicate the first data transmission parameter.
  • one or more pieces of first data may share one piece of first indication information.
  • the first indication information may be carried in Sidelink Control Information (SCI).
  • SCI Sidelink Control Information
  • the first device may send the SCI in the time slot when the first data is sent.
  • a field of 2, 3, or 4 bits may be used to indicate the first information.
  • the embodiment of the present application does not limit the specific number of bits of the first information.
  • the first information when the foregoing first information is used to instruct the second device to feed back HARQ information to the first data based on distance information, and/or to instruct the second device to feed back HARQ information to the first data based on signal quality information, the first The information can be represented by the first field in the SCI, and the different values of the first field can indicate that the second device feeds back HARQ information to the first data based on the distance information, and/or instructs the second device to respond to the first data based on the signal quality information.
  • Data feedback HARQ information when the foregoing first information is used to instruct the second device to feed back HARQ information to the first data based on distance information, and/or to instruct the second device to feed back HARQ information to the first data based on signal quality information.
  • different values of the foregoing first field may be used to indicate the foregoing multiple different feedback modes. For example, taking the first field of 2 bits as an example, when the value of the first field is 0 (corresponding to binary 00), the first information is used to instruct the second device to feed back HARQ information to the first data based on the distance information; When the value of the field is 1 (corresponding to binary 01), the first information is used to instruct the second device to feed back HARQ information to the first data based on the signal quality information; when the value of the first field is 2 (corresponding to binary 10), the first The information is used to instruct the second device to feed back HARQ information to the first data based on the distance information, and to feed back HARQ information to the first data based on the signal quality information; when the value of the first field is 3 (corresponding to binary 11), the first information is used To instruct the second device not to feed back HARQ information to
  • the foregoing first indication information may further include: second information, which is used to indicate that the first information is valid.
  • the second information can be represented by 1 bit in the SCI.
  • the 1-bit field value is 1, it means that the first information is valid, that is, the first information is used to instruct the second device based on distance information and/or signal quality information.
  • the HARQ information is fed back to the first data; when the 1-bit field value is 0, it indicates that the first information is invalid.
  • 0 can also be used to indicate that the first information is valid, and 1 to indicate that the first information is invalid, which is not limited in the present invention.
  • the 1 bit it means that the first information is carried; if the 1 bit is 1, it means that the first information is not carried, and it may indicate that the second device does not feed back HARQ information to the first data.
  • a different value of a field may be shared with the first information. For example, if the first field is 4 bits and the value of the 4 bits is 0000 or 1111, it can indicate that the first information is invalid, and other values of the 4 bits can be used to indicate the above first information. For example, 0001 can indicate the first information.
  • the second device feeds back the HARQ information of the first data based on the signal quality.
  • the foregoing first indication information may further include: third information, the third information being used to indicate the number of transmissions of the first data, indication information of the time-domain relationship between multiple transmissions of the first data, and One or more of the frequency domain relationship indication information between multiple transmissions.
  • the number of transmissions of the first data may also be referred to as the number of repetitions of the first data.
  • the number of transmissions N of the first data may be one or more of 1, 2, 4, and 8.
  • the third information may indicate the number N of transmissions of the first data.
  • the indication information of the time domain interval between the transmissions of two or more adjacent first data may be indicated by the third information.
  • the indication information of the frequency domain resource interval between the transmissions of two or more adjacent first data may be indicated by the third information.
  • the above-mentioned third information is also used to indicate frequency hopping parameters.
  • the third information may be indicated by the SCI, or part or all of the bits of the third information may be carried by the SCI, or the third information may be indicated by MAC, RRC or pre-configured signaling.
  • part of the bits of the third information may be carried by SCI, and another part of bits may be carried by MAC, RRC or pre-configured signaling.
  • the foregoing first indication information may further include: fourth information, which is used to indicate the location of the first device.
  • the fourth information may indicate the identity of the first area where the first device is located, or indicate the location coordinates (such as GPS coordinates) of the first device, etc.
  • the embodiment of the present application does not deal with the specific form of the location of the first device. To be limited, this is only an exemplary description.
  • the fourth information is also used to indicate the minimum communication distance of the first data.
  • the minimum communication distance may also be referred to as the required minimum communication distance or the minimum required communication distance, which refers to the minimum distance required to achieve a certain transmission delay, reliability, and rate.
  • the distance between the transmitter and the receiver which may be called a transceiver
  • the communication between the transceivers needs to meet the requirements of transmission delay, reliability, rate, etc.;
  • the distance between the transceivers is greater than or equal to the required minimum distance, the communication between the transceivers does not necessarily meet the requirements of transmission delay, reliability, speed, etc.
  • the second device can compare the distance between it and the first device with the minimum communication distance to determine whether to feed back HARQ information to the first data. For example, when the distance between the second device and the first device is less than or equal to the minimum communication distance, The second device determines to feed back HARQ information according to the receiving state of the first data; on the contrary, the second device does not feed back HARQ information.
  • the fourth information may be indicated by the SCI, or part or all of the bits of the fourth information may be carried by the SCI, or the fourth information may be indicated by MAC, RRC or pre-configured signaling.
  • part of the bits of the fourth information may be carried by SCI, and another part of bits may be carried by MAC, RRC or pre-configured signaling.
  • a joint field may be used, or two or more different fields may be used to indicate.
  • the embodiment does not limit this.
  • the foregoing first indication information may further include: fifth information, where the fifth information is used to indicate a signal quality threshold corresponding to the first data.
  • the signal quality corresponding to the first data when the signal quality corresponding to the first data is greater than or equal to the signal quality threshold, the communication reliability between the transceivers is relatively high; when the signal quality corresponding to the first data is less than or equal to the signal quality threshold When the value is set, the reliability of communication between transceivers is low.
  • the signal quality corresponding to the first data may be the signal quality of the first data sent by the first device and received by the second device, or the signal quality of the first indication information sent by the first device and received by the second device.
  • the second device can compare the received signal quality from the first device with the signal quality threshold to determine whether to feed back HARQ information to the first data. For example, when the received signal quality is greater than or equal to the signal quality threshold, the first The second device determines to feed back the HARQ information according to the receiving state of the first data; otherwise, the second device does not feed back the HARQ information.
  • the signal quality threshold corresponding to the first data may be the signal corresponding to the service quality parameter of the first data determined by the first device according to the corresponding relationship between the service quality parameter configured by the network device and the signal quality threshold Quality threshold; optionally, the signal quality threshold corresponding to the first data may also be a signal quality determined by the network device for the first device based on the location of the first device, the congestion level of the channel, the traffic load, etc. Threshold value.
  • the signal quality threshold value corresponding to the first data may also be the signal corresponding to the power parameter for sending the first data determined by the first device according to the corresponding relationship between the power parameter configured by the network device and the signal quality threshold value.
  • the signal quality threshold corresponding to the first data may also be a signal quality threshold determined by the first device according to the location of the first device, the congestion degree of the channel, and the traffic load.
  • the location of the first device may be the geographic location coordinates of the first device, or may be an identifier of the first area where the first device is located, which is not limited in this embodiment of the application.
  • the fifth information may be indicated by the SCI, or part or all of the bits of the fifth information may be carried by the SCI, or the fifth information may be indicated by MAC, RRC or pre-configured signaling.
  • part of the bits of the fifth information may be carried by SCI, and another part of bits may be carried by MAC, RRC or pre-configured signaling.
  • the foregoing first indication information may further include a second field, and different values of the second field are used to indicate the fourth information or the fifth information.
  • the second field is 4 bits.
  • the value of the second field is 0-10 (corresponding to binary 0000 ⁇ 1010), it means that the second field indicates the fourth information.
  • the field value is 11-15 (corresponding to binary 1011-1111), it means that the second field indicates the fifth information.
  • the fourth information and the fifth information may be multiplexed with the second field in the SCI.
  • the value of the second field is different, the information indicated by the second field is different.
  • the foregoing first indication information may further include a third field, and different values of the third field are used to indicate the foregoing third information or the foregoing fourth information or the foregoing fifth information.
  • the number of bits in the third field may be the same as or different from that of the second field, which is not limited in the embodiment of the present application.
  • the third field is 4 bits.
  • the third field indicates the above third information; when the third field is When the value of the field is 5-10 (corresponding to binary 0101 ⁇ 1010), it means that the third field indicates the above-mentioned fourth information; when the value of the third field is 11-15 (corresponding to binary 1011 ⁇ 1111), it means The third field indicates the fifth information described above. It is understandable that the third information, the fourth information, and the fifth information can be multiplexed with the third field in the SCI. When the value of the third field is different, the information indicated by the third field is different.
  • the foregoing first indication information may further include eighth information, and the eighth information is used to indicate that the information indicated by the fourth field in the SCI is third information or fourth information or fifth information.
  • the eighth information occupies two bits, and the fourth field is 4 bits.
  • the fourth field indicates the third information;
  • the fourth field indicates the foregoing fourth information;
  • the value of the eighth information is 2 (corresponding to binary 10)
  • the fourth field indicates the foregoing fourth information Five information. It is understandable that, unlike the previous implementation, in this implementation, a separate field can be used to indicate the information indicated by the fourth field.
  • the eighth information may be the foregoing first information.
  • the fourth field may indicate the third information; when the first information is used to instruct the second device to feed back the first data based on the distance information In the case of HARQ information, the fourth field may indicate the fourth information; when the first information is used to indicate that the second device feeds back HARQ information to the first data based on the signal quality information, the fourth field may indicate the fifth information. That is, when the feedback mode of the second device is different, the meaning represented by the fourth field is different, and the third information, the fourth information, and the fifth information can be multiplexed with the third field.
  • the embodiment of the present application does not limit the number of bits in the first field, the second field, the third field, and the fourth field, and this is only an exemplary description.
  • the foregoing first indication information may further include: sixth information, which is used to indicate a power parameter when the first device sends the first data.
  • the power parameter when the first device sends the first data may include: the transmission power change value when the first device sends the first data, the transmission power value when the first device sends the first data, or the first device sends the first data.
  • the margin value of the transmit power during data is the change of the transmit power when the first data is transmitted relative to the transmit power of the last time or the previous Kth time, and K is a positive integer.
  • the margin value of the transmit power when the first device sends the first data is the difference between the transmit power when the first device sends the first data and the maximum transmit power.
  • the sixth information may be indicated through the SCI, or part or all of the bits of the sixth information may be carried through the SCI, or the sixth information may be indicated through MAC, RRC or pre-configured signaling.
  • a part of the bits of the sixth information may be carried by the SCI, and the other part of the bits may be carried by the MAC, RRC or pre-configured signaling.
  • the different values of the second field are used to indicate the fourth information or the sixth information.
  • the second field is 4 bits.
  • the value of the second field is 0-10 (corresponding to binary 0000 ⁇ 1010), it means that the second field indicates the fourth information.
  • the value of the field is 11-15 (corresponding to binary 1011-1111), it means that the second field indicates the sixth information.
  • the fourth information and the sixth information may be multiplexed with the second field in the SCI.
  • the value of the second field is different, the information indicated by the second field is different.
  • the different value of the third field is used to indicate the third information or the fourth information or the sixth information .
  • the number of bits in the third field may be the same as or different from that of the second field, which is not limited in the embodiment of the present application.
  • the third field is 4 bits.
  • the third field indicates the above-mentioned third information
  • the third field indicates the above-mentioned fourth information
  • the value of the third field is 11-15 (corresponding to binary 1011 ⁇ 1111)
  • the third field indicates the sixth information described above. It is understandable that the third information, the fourth information, and the sixth information can be multiplexed with the third field in the SCI.
  • the above-mentioned first indication information may further include ninth information, and the ninth information is used to indicate that the information indicated by the fourth field in the SCI is third information or fourth information or sixth information.
  • the ninth information occupies two bits, and the fourth field is 4 bits.
  • the fourth field indicates the third information;
  • the fourth field indicates the foregoing fourth information;
  • the value of the ninth information is 2 (corresponding to binary 10)
  • the fourth field indicates the foregoing fourth information Six information. It is understandable that, unlike the previous implementation, in this implementation, a separate field can be used to indicate the information indicated by the fourth field.
  • the ninth information may be the foregoing first information.
  • the fourth field may indicate the third information; when the first information is used to instruct the second device to feed back the first data based on the distance information
  • the fourth field may indicate fourth information; when the first information is used to indicate that the second device feeds back HARQ information to the first data based on signal quality information, the fourth field may indicate sixth information. That is, when the feedback mode of the second device is different, the meaning represented by the fourth field is different, and the third information, the fourth information, and the sixth information can be multiplexed with the third field.
  • the foregoing first indication information may further include: seventh information, where the seventh information is used to indicate a quality of service parameter of the first data.
  • the Quality of Service (QoS) parameter includes one or more sub-parameters, for example, sub-parameter 1: priority information, sub-parameter 2: delay information, sub-parameter 3: reliability information, and sub-parameter 4: data One or more of the size of the package.
  • the seventh information may be indicated through the SCI, or part or all of the bits of the seventh information may be carried through the SCI, or the seventh information may be indicated through MAC, RRC or pre-configured signaling.
  • a part of the bits of the seventh information may be carried by SCI, and another part of bits may be carried by MAC, RRC or pre-configured signaling.
  • the priority information is used to indicate or determine the priority level of the data packet. The higher the priority, the more important or urgent the data packet corresponding to it.
  • the delay information refers to the maximum delay required for data packet transmission.
  • some data packets need to reach the receiver within 3ms, some data packets need to reach the receiver within 10ms, and some data packets need to reach the receiver within 50ms.
  • the reliability information indicates the reliability requirement of the data packet.
  • the higher the reliability requirement such as 99.99%, more mechanisms are needed to ensure the correct reception of data packets during transmission, such as physical layer feedback or more retransmission times; reliability
  • the size of the data packet can also be the required transmission rate.
  • the larger the value the larger the amount of packets or information to be transmitted, and vice versa, the smaller the amount of packets or information to be transmitted.
  • step S301 it may further include: the first device obtains second configuration information, the second configuration information includes one or more sets of quality of service parameters, and one or more corresponding to each set of quality of service parameters. Multiple signal quality thresholds.
  • the one or more sets of service quality parameters include the service quality parameters of the first data, that is, the first device may determine the signal quality threshold corresponding to the service quality parameters of the first data according to the second configuration information.
  • a set of service quality parameters may correspond to one row in Table 1, and similarly, multiple sets of service quality parameters may correspond to multiple rows in Table 1.
  • the service quality parameters corresponding to different services are different, that is, at least one of the one or more sub-parameters included in the corresponding service quality parameters is different; even for the same type of service, the service quality parameters are also different. It may be different, that is, at least one of the one or more sub-parameters included in the corresponding quality of service parameter is different. For example, for services of the same type of delay requirement, their priorities may be different; or, for services of the same type of priority, one or more sub-parameters of the corresponding service quality parameters may also be the same or different.
  • a set of service quality parameters in the above-mentioned second configuration information may correspond to multiple signal quality thresholds, and the signal quality thresholds corresponding to different service quality parameters may be the same or different. This embodiment of the application combines this Not limited.
  • the second configuration information acquired by the above-mentioned first device may be by receiving the second configuration information sent by the network device.
  • the second configuration information may be indicated by a base station instruction (for example, system information block SIB or RRC signaling), or may be indicated by another terminal device for sidelink communication (for example, indicated by RRC, MAC signaling, etc.).
  • a base station instruction for example, system information block SIB or RRC signaling
  • RRC radio resource control
  • the corresponding relationship between the service quality parameter and the signal quality threshold in the above second configuration information may be configured through explicit signaling, or may be stored in the database in the form of a table.
  • the database may be stored in the memory 202 shown in FIG. 2 in the form of software, or solidified in the processor 201 or other components of the communication device 200 (the first device) in the form of hardware, which is not limited in this application. It is understandable that the corresponding relationship between the service quality parameter and the signal quality threshold value in the embodiment of the present application may also be determined in other forms, such as a preset manner or a predefined manner.
  • the service quality parameter includes priority information
  • the corresponding relationship between the service quality parameter and the signal quality threshold can be represented by the table shown in Table 2A below.
  • the corresponding relationship between the service quality parameter and the signal quality threshold value can be represented by the table shown in Table 2B.
  • the quality of service parameters include priority information and delay information, according to Table 2B, it can be known that taking the priority information as priority 2, the maximum end-to-end delay is 20 ms meters as an example.
  • the signal quality threshold corresponding to the service quality parameter includes R2 and R4.
  • the above-mentioned second configuration information may include multiple sub-parameters, and a signal quality threshold corresponding to each sub-parameter.
  • the service quality parameter including priority information and delay information as an example, the corresponding relationship between the service quality parameter and the signal quality threshold value can be represented by the tables shown in Table 2A and Table 2C.
  • the service quality parameter includes priority information and delay information
  • Table 2A and Table 2C can be known, taking the priority information as priority 3, and the maximum end-to-end delay of 20 ms as an example.
  • the signal quality threshold corresponding to priority 3 is R3
  • the signal quality threshold corresponding to the maximum end-to-end delay of 20 ms includes R2 and R4.
  • service quality parameters and signal quality thresholds can be expressed in tables, or in other ways (such as configured signaling).
  • a table can be used. It can be expressed by multiple tables that the embodiments of this application do not limit this.
  • the first device may also determine the first signal quality threshold value corresponding to the service quality parameter of the first data according to the service quality parameter of the first data and the second configuration information.
  • a signal quality threshold is one of one or more signal quality thresholds, and the first signal quality threshold is a signal quality threshold corresponding to the first data.
  • a set of service quality parameters may correspond to one or more signal quality thresholds. If there are multiple signal quality thresholds corresponding to the quality of service parameters of the first data, the minimum, median, maximum, average, or minimum of the signal quality thresholds corresponding to the quality of service parameters of the first data can be set. The area is determined as the first signal quality threshold value, which is not limited in the embodiment of the present application, and is only an exemplary description here.
  • step S301 it may further include: the first device acquires third configuration information, the third configuration information includes one or more power parameters, and one or more power parameters corresponding to each power parameter. Signal quality threshold.
  • the one or more power parameters include the power parameter when the first device sends the first data, that is, the first device can determine the signal quality threshold corresponding to the power parameter when the first device sends the first data according to the third configuration information .
  • the third configuration information acquired by the foregoing first device may be by receiving configuration information sent by a network device.
  • the third configuration information may be indicated by a base station instruction (for example, system information block SIB or RRC signaling), or may be indicated by another terminal device for sidelink communication (for example, indicated by RRC, MAC signaling, etc.).
  • a base station instruction for example, system information block SIB or RRC signaling
  • RRC Radio Resource Control
  • MAC signaling for example, MAC signaling, etc.
  • the corresponding relationship between the transmission power and the signal quality threshold can be represented by the table shown in Table 3 below.
  • the first device may also determine the second device corresponding to the power parameter when the first device sends the first data according to the power parameter and the third configuration information when the first device sends the first data.
  • the signal quality threshold, the second signal quality threshold is one of one or more signal quality thresholds, and the second signal quality threshold is the signal quality threshold corresponding to the first data.
  • the power parameter when the first device sends the first data may correspond to one or more signal quality thresholds. If there are multiple signal quality thresholds corresponding to the power parameters when the first device sends the first data, the minimum and intermediate values of the signal quality thresholds corresponding to the power parameters when the first device sends the first data can be set , The maximum value, the average value, or the minimum area is determined as the first signal quality threshold value, which is not limited in the embodiment of the present application, and is only an exemplary description here.
  • step S301 it may further include: the first device determines the signal quality threshold corresponding to the first data according to the location of the first device, the congestion degree of the channel, the traffic load, and the like.
  • the location of the first device may be the geographic location coordinates of the first device, or the identification of the first area where the first device is located, or the area to which the location of the first device belongs. Not limited.
  • the first device is in different locations such as cities, highways, mountainous areas, or suburbs, and/or when the channel congestion levels are different, and/or when the traffic intensity is different, the first data corresponds to The signal quality threshold can be different.
  • the first device may also receive corresponding signal quality thresholds in different geographic locations, channel congestion levels, and traffic load conditions sent by network devices (for example, base station devices), and determine the corresponding signal quality thresholds according to the configuration of the base station.
  • the signal quality threshold for example, base station devices
  • the first device may also receive a signal quality threshold configured by the network device for the first device based on the location of the first device, the congestion degree of the channel, the service load condition, and the like.
  • the second device obtains the first indication information.
  • acquiring the first indication information by the second device may include: receiving the first indication information sent by the first device by the second device.
  • the second device may also receive fourth configuration information sent by a network device (for example, a base station device), and determine the second device's configuration information according to the fourth configuration information sent by the network device and the first indication information sent by the first device. Feedback method.
  • the fourth configuration information may indicate that the second device feeds back the HARQ information of the first data to the first device, or does not feed back the HARQ information of the first data to the first device.
  • the foregoing fourth configuration information may also instruct the second device to feed back HARQ information to the first device based on distance information and/or signal quality information.
  • the second device feeds back the HARQ information of the first data to the first device according to the fourth configuration information.
  • the second device may determine the specific feedback mode of the second device according to the fourth configuration information configured by the base station. For example, if the fourth configuration information instructs the second device to feed back HARQ information to the first device based on the distance information and/or signal quality information, when the location information of the second device is lost or becomes invalid, the second device can report to the first device based on the signal quality information. A device feeds back HARQ information of the first data.
  • the fourth configuration information may be indicated by a base station instruction (for example, system information block SIB or RRC signaling), or may be indicated by another terminal device doing sidelink communication (for example, indicated by RRC, MAC signaling, etc.) ), the embodiment of the present application does not limit this.
  • the second device receives the first data sent by the first device.
  • the moment when the second device receives the first data sent by the first device may be the same or different from the moment when the second device receives the first indication information sent by the first device, which is not discussed in this embodiment of the application. limited.
  • the second device feeds back HARQ information of the first data to the first device according to the first indication information.
  • multiple situations may be included when the second device feeds back the HARQ information of the first data to the first device according to the first indication information. For example, when the first device determines to instruct the second device to feed back HARQ information based on the distance information, if the second device obtains the location of the second device, the second device can report to the first device according to the distance between the first device and the second device. The HARQ information of the first data is fed back; if the second device cannot obtain the location of the second device, the second device can report to the first device according to the signal quality of the signal sent by the first device (for example, the signal quality corresponding to the first data) The HARQ information of the first data is fed back.
  • the second device can use The distance between the devices feeds back the HARQ information of the first data to the first device, or the second device may feed back the first data to the first device according to the distance between the first device and the second device and the signal quality corresponding to the first data.
  • the HARQ information of the data if the second device cannot obtain the location of the second device, the second device may feed back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data.
  • the second device may feed back the HARQ information of the first data to the first device according to the signal quality corresponding to the received first data, including: the second device detects the signal sent from the first device, and then the detected The signal quality of the signal is compared with the configured signal quality threshold, and if it is greater than or equal to the configured signal quality threshold, the second device feeds back HARQ information, otherwise it does not feed back HARQ information.
  • the second device feeding back HARQ information of the first data to the first device according to the first indication information includes: The second device determines the distance between the first device and the second device according to the fourth information; and feeds back HARQ information according to the distance between the first device and the second device.
  • the fourth information is used to indicate the location and minimum communication distance of the first device. It can be understood that the embodiment of the present application does not limit the specific implementation manner in which the second device determines the distance between the first device and the second device according to the fourth information. For details, reference may be made to the method in the prior art.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the first device and the second device If the distance is less than the minimum communication distance, the second device sends an ACK feedback to the first device; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device does not send feedback.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the first device and the second device If the distance between the two devices is less than the minimum communication distance, the second device does not send feedback; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device sends a NACK feedback to the first device.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the distance between the first device and the second device is less than the minimum For the communication distance, the second device sends an ACK feedback to the first device; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device sends a NACK feedback to the first device.
  • This implementation manner can be applied to a scenario where neither the location information of the first device nor the second device is lost, or a scenario based on distance feedback can be preferentially used.
  • the first device obtains the location of the first device, it instructs the second device to feed back HARQ information of the first data to the first device based on the distance information; after obtaining the location of the second device, the second device determines the first device and the second device. The distance between the devices, and based on the distance and the minimum communication distance, the HARQ information of the first data is fed back to the first device.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the second device feeding back HARQ information of the first data to the first device according to the first indication information includes : Obtain the signal quality corresponding to the first data and the signal quality threshold value corresponding to the first data; according to the signal quality corresponding to the first data and the signal quality threshold value corresponding to the first data, feedback the first data to the first device HARQ information.
  • the second device may feed back the HARQ of the first data to the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data. information.
  • the signal quality threshold corresponding to the above first data may be the signal quality threshold configured by the network device to the second device; it may also be the second device according to the location of the first device, channel congestion, and service The signal quality threshold corresponding to the first data determined by the load condition, etc.; it may also be the signal quality threshold corresponding to the first data determined by the second device according to the seventh information in the first indication information sent by the first device, Seven information is used to indicate the quality of service parameters of the first data.
  • the quality of service parameter of the first data indicated in the seventh information may be priority information of the first data.
  • the first device when the first device is in different locations such as cities, highways, mountainous areas, or suburbs, and/or when the channel congestion levels are different, and/or when the traffic intensity is different, the first data corresponds to The signal quality threshold can be different.
  • the second device may also receive signal quality thresholds corresponding to different geographic locations, channel congestion levels, and traffic loads sent by the base station, and determine the signal quality corresponding to the first data according to the configuration of the base station and the location of the first device Threshold value.
  • step S304 it may further include: the second device acquires fifth configuration information, the fifth configuration information includes one or more sets of quality of service parameters, and one or more signals corresponding to each set of quality of service parameters Quality threshold; the one or more sets of service quality parameters include the service quality parameters of the first data, that is, the second device can determine the signal quality threshold corresponding to the service quality parameters of the first data according to the fifth configuration information .
  • the manner in which the second device obtains the fifth configuration information and the content of the fifth configuration information can refer to the manner in which the first device obtains the second configuration information in step S301 and the related description of the content of the second configuration information. I will not repeat them here.
  • the fifth configuration information may be the same as or different from the foregoing second configuration information, which is not limited in the embodiment of the present application.
  • the above-mentioned second device determining the signal quality threshold corresponding to the first data according to the seventh information includes: the second device obtains the service quality parameter corresponding to the first data according to the service quality parameter of the first data A third signal quality threshold, where the third signal quality threshold is one of one or more signal quality thresholds, and the third signal quality threshold is a signal quality threshold corresponding to the first data. .
  • the second device feeds back the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data.
  • the HARQ information of a data includes: if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device), the second device sends an ACK feedback to the first device; The signal quality corresponding to one piece of data is less than the third signal quality threshold (or the signal quality threshold configured by the network device), and the second device does not send feedback.
  • the second device feeds back the first device according to the signal quality corresponding to the first data and the signal quality threshold value corresponding to the first data.
  • the HARQ information of a piece of data includes: if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device), the second device does not send feedback; if the first data corresponds to If the signal quality is less than the third signal quality threshold (or the signal quality threshold configured by the network device), the second device sends a NACK feedback to the first device.
  • the above-mentioned second feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data.
  • the second device sends an ACK feedback to the first device; if the signal quality corresponding to the first data Less than the third signal quality threshold (or signal quality threshold configured by the network device), the second device sends a NACK feedback to the first device.
  • This implementation manner may be applied to a scenario where the location information of the first device is not lost but the location information of the second device is lost, or a scenario where signal quality can be used preferentially.
  • the first device obtains the location of the first device, it instructs the second device to feed back the HARQ information of the first data to the first device based on the distance information; because the second device cannot obtain the location of the second device (the location of the second device) Information loss), the second device feeds back the HARQ information of the first data to the first device based on the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the second device when the first information is used to instruct the second device to feed back HARQ information to the first data based on the signal quality information, the second device feeds back the HARQ information of the first data to the first device according to the first instruction information
  • the method includes: acquiring the signal quality corresponding to the first data by the second device; feeding back HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the fifth information.
  • the fifth information is used to indicate the foregoing first signal quality threshold or second signal quality threshold.
  • the first device may instruct the second device to feed back the HARQ information of the first data to the first device based on the signal quality information.
  • the second device feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the fifth information, Including: if the signal quality corresponding to the first data is greater than or equal to the signal quality threshold indicated by the fifth information (the first signal quality threshold or the second signal quality threshold), the second device sends an ACK to the first device Feedback; if the signal quality corresponding to the first data is less than the signal quality threshold indicated by the fifth information, the second device does not send feedback.
  • the second device feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the fifth information. Including: if the signal quality corresponding to the first data is greater than or equal to the signal quality threshold indicated by the fifth information, the second device does not send feedback; if the signal quality corresponding to the first data is less than the signal quality threshold indicated by the fifth information , The second device sends a NACK feedback to the first device.
  • the second device feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the fifth information, including: If the corresponding signal quality is greater than or equal to the signal quality threshold indicated by the fifth information, the second device sends an ACK feedback to the first device; if the signal quality corresponding to the first data is less than the signal quality threshold indicated by the fifth information, the The second device sends a NACK feedback to the first device.
  • This implementation manner can be applied to a scenario where the location information of the first device is lost, or a scenario where better signal quality feedback is based.
  • the first device cannot obtain the location of the first device (the location information of the first device is lost), the first device instructs the second device to feed back the HARQ information of the first data to the first device based on the signal quality, and the first device
  • the first indication information sent by the second device includes the signal quality threshold corresponding to the first data; the second device feeds back to the first device based on the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data HARQ information of the first data.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the second device feeds back the HARQ information of the first data to the first device according to the first instruction information Including: the second device obtains the signal quality corresponding to the first data; obtains the signal quality threshold corresponding to the first data according to the sixth information; according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data The first device feeds back the HARQ information of the first data.
  • the sixth information is used to indicate the power parameter when the first device sends the first data.
  • the first device may instruct the second device to feed back the HARQ information of the first data to the first device based on the signal quality information.
  • step S304 it may further include: the second device acquires sixth configuration information, the sixth configuration information includes one or more power parameters, and one or more signal qualities corresponding to each power parameter Threshold value; the one or more power parameters include the power parameter when the first device sends the first data, that is, the second device can determine the signal corresponding to the power parameter when the first device sends the first data according to the sixth configuration information Quality threshold (fourth signal quality threshold).
  • the manner in which the second device obtains the sixth configuration information and the content of the sixth configuration information can refer to the manner in which the first device obtains the third configuration information in step S301 and the related description of the content of the third configuration information. I will not repeat them here.
  • the sixth configuration information may be the same as or different from the third configuration information, which is not limited in the embodiment of the present application.
  • acquiring the signal quality threshold corresponding to the first data by the second device according to the sixth information includes: the second device acquires the first device sent by the first device according to the power parameter when the first device sends the first data
  • a fourth signal quality threshold value corresponding to a power parameter at a time of data the fourth signal quality threshold value is one of one or more signal quality threshold values
  • the fourth signal quality threshold value is the first The signal quality threshold corresponding to the data.
  • the second device feeds back the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data.
  • the HARQ information of a piece of data includes: if the signal quality corresponding to the first data is greater than or equal to the fourth signal quality threshold, the second device sends an ACK feedback to the first device; if the signal quality corresponding to the first data is less than the fourth signal Quality threshold, the second device does not send feedback.
  • the second device feeds back the first device according to the signal quality corresponding to the first data and the signal quality threshold value corresponding to the first data.
  • HARQ information of a piece of data including: if the signal quality corresponding to the first data is greater than or equal to the fourth signal quality threshold, the second device does not send feedback; if the signal quality corresponding to the first data is less than the fourth signal quality threshold , The second device sends a NACK feedback to the first device.
  • the above-mentioned second feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data. Including: if the signal quality corresponding to the first data is greater than or equal to the fourth signal quality threshold, the second device sends an ACK feedback to the first device; if the signal quality corresponding to the first data is less than the fourth signal quality threshold, The second device sends a NACK feedback to the first device.
  • This implementation manner can be applied to a scenario where the location information of the first device is lost.
  • the first device cannot obtain the location of the first device (the location information of the first device is lost), the first device instructs the second device to feed back the HARQ information of the first data to the first device based on the signal quality, and the first device
  • the first indication information sent by the second device includes the power parameter of the first data sent by the first device; the second device feeds back to the first device based on the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data HARQ information of the first data.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the second device feeds back the first data to the first device according to the first indication information.
  • the HARQ information includes: the second device feeds back the HARQ information of the first data to the first device according to the distance between the first device and the second device and the signal quality corresponding to the first data.
  • the second device may determine the distance between the first device and the second device according to fourth information, where the fourth information is used to indicate the location of the first device and the minimum communication distance; the second device may obtain the first data Corresponding signal quality and signal quality threshold; according to the distance between the first device and the second device, the signal quality corresponding to the first data, and the signal quality threshold, the HARQ information of the first data is fed back to the first device .
  • the second device when the distance between the first device and the second device is less than or equal to the minimum communication distance, the second device feeds back HARQ information; or, when the signal quality corresponding to the first data acquired by the second device is greater than or equal to When the signal quality threshold, the second device feeds back HARQ information; or, when the distance between the first device and the second device is less than or equal to the minimum communication distance and the signal quality corresponding to the first data obtained by the second device is greater than or When it is equal to the signal quality threshold, the second device feeds back HARQ information.
  • the signal quality threshold corresponding to the above first data may be the signal quality threshold configured by the network device to the second device; it may also be the second device according to the location of the first device, channel congestion, and service The signal quality threshold corresponding to the first data determined by the load condition, etc.; it may also be the signal quality threshold corresponding to the first data determined by the second device according to the seventh information in the first indication information sent by the first device, Seven information is used to indicate the quality of service parameters of the first data.
  • the quality of service parameter of the first data indicated in the seventh information may be priority information of the first data.
  • the above-mentioned second device when the HARQ information feedback includes sending ACK but not NACK (only ACK is sent), the above-mentioned second device sends the signal to the first device according to the distance between the first device and the second device and the signal quality corresponding to the first data.
  • the HARQ information of the first data is fed back, including: if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device Is less than the minimum communication distance, or if the signal quality corresponding to the first data is less than the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is less than the minimum communication distance, Or, if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is greater than the minimum communication distance, the second device Send ACK feedback to the first device; if the signal quality corresponding to the first data is less than the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is greater than the minimum communication distance , The second device does not send feedback.
  • the above-mentioned second device when the HARQ information feedback includes sending no ACK and sending NACK (only sending NACK), the above-mentioned second device sends the signal to the first device according to the distance between the first device and the second device and the signal quality corresponding to the first data.
  • the HARQ information of the first data is fed back, including: if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device Is less than the minimum communication distance, or if the signal quality corresponding to the first data is less than the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is less than the minimum communication distance, Or, if the signal quality corresponding to the first data is greater than or equal to the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is greater than the minimum communication distance, the second device No feedback is sent; if the signal quality corresponding to the first data is less than the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is greater than the minimum communication distance, the second device Send NACK feedback to the first device.
  • the above-mentioned second device feeds back the HARQ of the first data to the first device according to the distance between the first device and the second device and the signal quality corresponding to the first data.
  • the second device sends an ACK to the first device Feedback; if the signal quality corresponding to the first data is less than the third signal quality threshold (or the signal quality threshold configured by the network device) and the distance between the first device and the second device is greater than the minimum communication distance, the second device A device sends NACK feedback.
  • This implementation manner can be applied to a scenario where neither the location information of the first device nor the second device is lost. For example, after the first device obtains its location information, it instructs the second device to feed back the HARQ information of the first data to the first device based on the signal quality and distance information; the second device is based on the signal quality corresponding to the first data and the first device and the second device. The distance between the two devices, and the HARQ information of the first data is fed back to the first device.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the second device feeds back the HARQ of the first data to the first device according to the first indication information.
  • Information includes: the second device obtains the signal quality corresponding to the first data; the second device determines the signal quality threshold corresponding to the first data; according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data , Feedback the HARQ information of the first data to the first device.
  • the second device feeds back the HARQ information of the first data to the first device according to the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data .
  • determining the signal quality threshold value corresponding to the first data by the second device may include: the second device determining the signal quality threshold value corresponding to the first data according to seventh information, where the seventh information is used to indicate the first data A data service quality parameter.
  • the second device may determine the third signal quality threshold corresponding to the service quality parameter of the first data according to the service quality parameter of the first data and the fifth configuration information.
  • the second device may feed back the HARQ information of the first data to the first device according to the third signal quality threshold and the signal quality corresponding to the first data. It is understandable that the second device can feed back the HARQ information of the first data to the first device according to the third signal quality threshold and the signal quality corresponding to the first data.
  • the second device can feed back the HARQ information of the first data to the first device according to the third signal quality threshold and the signal quality corresponding to the first data.
  • determining the signal quality threshold value corresponding to the first data by the second device may further include: the second device acquiring the fifth signal quality threshold value sent by the base station.
  • the second device may feed back the HARQ information of the first data to the first device according to the fifth signal quality threshold value and the signal quality corresponding to the first data. It is understandable that the second device can feed back the HARQ information of the first data to the first device according to the fifth signal quality threshold and the signal quality corresponding to the first data.
  • the device may feed back the HARQ information of the first data to the first device according to the third signal quality threshold value and the signal quality corresponding to the first data, which is not repeated here.
  • This implementation can be applied to a scenario where the location information of the first device is not lost, but the location information of the second device is lost. For example, after the first device obtains its location information, it instructs the second device to feed back the HARQ information of the first data to the first device based on the signal quality and distance information; the second device cannot obtain the location information of the second device (the second device’s (Location information is lost), the second device feeds back the HARQ information of the first data to the first device based on the signal quality corresponding to the first data and the signal quality threshold corresponding to the first data.
  • the embodiment of the present application does not limit the application scenario of the implementation manner, and is only an exemplary description here.
  • the embodiment of the present application provides a communication method.
  • the method obtains first indication information through a first device; the first device sends first indication information and first data to a second device; the second device obtains the first indication information;
  • the device receives the first data sent by the first device; the second device feeds back the HARQ information of the first data to the first device according to the first indication information.
  • the first device acquires the HARQ information of the second device to feed back the first data to the first device, so that the first device can instruct the second device to switch between multiple feedback methods.
  • This method can be applied to more Multiple scenarios improve the reliability of communication between transmitter and receiver.
  • the embodiment of the present application also provides a communication method. As shown in FIG. 4, the method may include steps S401-S405.
  • S401 The first device obtains second indication information.
  • the second indication information includes tenth information, which is used to instruct the second device to feed back HARQ information to the first data based on the distance information, or to instruct the second device not to feed back HARQ information to the first data.
  • the foregoing distance information may be the distance between the first device and the second device.
  • the tenth information may be used to instruct the second device to feed back HARQ information to the first data based on the distance between the first device and the second device, or to instruct the second device not to feed back HARQ information to the first data.
  • obtaining the second indication information by the first device may include: obtaining seventh configuration information by the first device, where the seventh configuration information is used to indicate the second indication information.
  • the seventh configuration information may be configuration information sent by the base station. It is understandable that in this implementation manner, the base station may configure the feedback mode of the second device and send the configuration to the first device. The first device may determine the specific feedback mode according to the configuration of the base station.
  • the seventh configuration information may be indicated by the third device to the first device through signaling, and the third device may be a device that performs sideline communication.
  • the seventh configuration information may be pre-configured.
  • the seventh configuration information may be instructed by a base station instruction, or may be instructed by another terminal device performing sidelink communication, which is not limited in the embodiment of the present application.
  • the seventh configuration information can be carried in a message sent by the third device, it can be indicated by RRC signaling of the side link of the UE.
  • acquiring the second indication information by the first device may include: the first device acquiring channel quality information, and the first device determines the second indication information according to the channel quality information.
  • the first device may determine the second indication information according to the congestion degree of the channel. For example, when the channel is congested, the tenth information may be determined to indicate that the second device does not feed back HARQ information to the first data; or when the channel is not congested, the tenth information may be determined to indicate that the second device is based on the first device and The HARQ information is fed back to the distance between the second devices.
  • the embodiment of the present application does not limit the specific rule for the first device to determine the second indication information according to the channel quality information, and this is only an exemplary description.
  • the obtaining of the second indication information by the first device may include: the first device obtaining the location of the first device, and if the first device cannot obtain the location of the first device, the first device determines the second indication information Used to instruct the second device not to feed back HARQ information to the first data. If the first device obtains the location of the first device, the first device determines that the second indication information is used to instruct the second device to feed back HARQ information to the first data based on the distance between the first device and the second device.
  • the location of the first device may be the geographic location of the first device, and the geographic location of the first device may refer to location coordinates obtained based on satellites, such as global positioning system coordinates, or Beidou location coordinates.
  • the location of the first device may also be location information obtained based on other positioning systems or positioning technologies, such as location information obtained based on inertial navigation, location information obtained based on radar, and location obtained based on positioning signals between the network device and the UE Information, etc., this embodiment of the application does not limit this. It is understandable that the reason why the first device cannot obtain its own location may include that the current location of the first device is not covered by the network, or the network signal is poor, which is not limited in the embodiment of the present application.
  • the embodiment of the present application does not limit the specific manner in which the first device obtains the second indication information, and is only an exemplary description here.
  • the first device may also obtain the second indication information according to whether the feedback resource is sufficient.
  • the manner of feeding back HARQ information includes: sending an Acknowledgement (ACK) without sending a Negative Acknowledgement (NACK), or sending a NACK without sending an ACK, or sending an ACK or a NACK. That is, feeding back HARQ information includes sending only ACK, or sending only NACK, or sending ACK or NACK.
  • ACK Acknowledgement
  • NACK Negative Acknowledgement
  • feeding back HARQ information includes sending only ACK, or sending only NACK, or sending ACK or NACK.
  • the foregoing manner of feeding back HARQ information may be configured by a network device (for example, a base station device).
  • the network device may indicate the specific way of feeding back HARQ through signaling.
  • the first device and/or the second device may perform feedback according to the specific HARQ feedback mode configured by the base station.
  • the first device can determine the feedback mode of the second device, and send indication information indicating the feedback mode of the second device to the second device, so that the first device can instruct the second device to perform the feedback mode
  • the switching can be applied to more scenarios and improve the reliability of communication between transmitter and receiver.
  • S402 The first device sends the second indication information and the first data to the second device.
  • the first device may send the second indication information and the first data in a multicast, unicast or broadcast manner.
  • the first device may send the second indication information and first data to one second device (unicast scenario), and the first device may also send the second indication information and first data to multiple second devices (multicast scenario).
  • the first device can also send second indication information and first data to an unlimited number of second devices (broadcast scenes).
  • the second device may be an explicit receiver of the first device, or may be unknown or unclear to the first device The receiver is not limited in this embodiment of the application.
  • the second indication information and the first data may be sent at the same time or at different times. This is not the case in this embodiment of the application.
  • the first data may be sent in a time slot in which the first device sends the second indication information.
  • the first data may be sent before or after the time slot in which the first device sends the second indication information.
  • the optional second indication information may be information used to indicate the first data transmission parameter.
  • one or more first data may share one second indication information.
  • the second indication information may be carried in the SCI.
  • the first device may send the SCI in the time slot when the first data is sent.
  • a field of 2, 3, or 4 bits may be used to indicate the tenth information, and the embodiment of the present application does not limit the specific number of bits of the tenth information.
  • the SCI may include a first field, and different values of the first field are used to instruct the second device to feed back HARQ information to the first data based on the distance information, or to instruct the second device not to feed back HARQ information to the first data .
  • the first field in the SCI when the value of the first field is 0, the tenth information is used to instruct the second device to feed back HARQ information to the first data based on the distance information; When the value is 1, the tenth information is used to indicate that the second device does not feed back HARQ information to the first data.
  • the embodiment of the present application does not limit the number of bits occupied by the first field of the SCI, which is only an exemplary description here.
  • the foregoing second indication information may further include: eleventh information, the eleventh information being used to indicate the number of transmissions of the first data, indication information of the time domain relationship between multiple transmissions of the first data, and One or more of the frequency domain relationship indication information between multiple transmissions of data.
  • the number of transmissions N of the first data may be one or more of 1, 2, 4, and 8.
  • the eleventh information may indicate the number N of transmissions of the first data.
  • the indication information of the time domain interval between the transmissions of two or more adjacent first data may be indicated by the eleventh information.
  • the indication information of the frequency domain resource interval between the transmissions of two or more adjacent first data may be indicated by the eleventh information.
  • the above-mentioned eleventh information is also used to indicate frequency hopping parameters.
  • the eleventh information may be indicated through the SCI, or part or all of the bits of the eleventh information may be carried through the SCI, or the eleventh information may be indicated through MAC, RRC or pre-configured signaling.
  • a part of the bits of the eleventh information may be carried by SCI, and the other part of bits may be carried by MAC, RRC or pre-configured signaling.
  • the foregoing second indication information may further include: twelfth information, where the twelfth information is used to indicate the location of the first device.
  • the twelfth information may indicate the identity of the first area where the first device is located, or indicate the location coordinates (such as GPS coordinates) of the first device, etc.
  • the embodiment of the present application does not compare the specific form of the location of the first device. It is not limited, and this is only an exemplary description.
  • the twelfth information is also used to indicate the minimum communication distance of the first data.
  • the minimum communication distance can also be referred to as the required minimum communication distance or the minimum required communication distance, which refers to the minimum distance required to achieve a certain transmission delay, reliability, and rate.
  • the distance between the transmitter and the receiver which may be called a transceiver
  • the communication between the transceivers needs to meet the requirements of transmission delay, reliability, rate, etc.
  • the distance between the transceivers is greater than or equal to the required minimum distance, the communication between the transceivers does not necessarily meet the requirements of transmission delay, reliability, speed, etc.
  • the twelfth information may be indicated through the SCI, or part or all of the bits of the twelfth information may be carried through the SCI, or the twelfth information may be indicated through MAC, RRC or pre-configured signaling.
  • a part of the bits of the twelfth information may be carried by SCI, and the other part of bits may be carried by MAC, RRC or pre-configured signaling.
  • a joint field may be used, or two or more different fields may be used to indicate that The application embodiment does not limit this.
  • the foregoing second indication information may further include a second field, and different values of the second field are used to indicate the eleventh information or the twelfth information.
  • the second field is 4 bits.
  • the value of the second field is 0-10 (corresponding to binary 0000 ⁇ 1010), it means that the second field indicates the eleventh information.
  • the value of the second field is 11-15 (corresponding to binary 1011-1111), it means that the second field indicates the twelfth information. It is understandable that the eleventh information and the twelfth information can be multiplexed with the second field in the SCI.
  • the eleventh information and the twelfth information can be multiplexed with the second field in the SCI.
  • the value of the second field is different, the information indicated by the second field is different.
  • the foregoing second indication information may further include thirteenth information, and the thirteenth information is used to indicate that the information indicated by the third field in the SCI is the eleventh information or the twelfth information.
  • the thirteenth information occupies 1 bit
  • the third field is 4 bits, when the value of the thirteenth information is 0, the third field indicates the eleventh information; when the tenth
  • the third field indicates the above-mentioned twelfth information. It is understandable that, unlike the previous implementation, in this implementation, a single field can be used to indicate the information indicated by the third field.
  • the above thirteenth information can be carried in the SCI.
  • the thirteenth information may be the aforementioned tenth information, or the aforementioned tenth information may be different.
  • the thirteenth information is the tenth information mentioned above.
  • the third field indicates the twelfth information; when the tenth information is used to instruct the second device not to feed back HARQ information to the first data, The third field indicates the eleventh information.
  • the second device obtains second indication information.
  • acquiring the second indication information by the second device may include: receiving the second indication information sent by the first device by the second device.
  • the second device may also receive eighth configuration information sent by a network device (for example, a base station device), and determine the status of the second device according to the eighth configuration information sent by the network device and the second indication information sent by the first device. Feedback method.
  • the eighth configuration information may indicate that the second device feeds back the HARQ information of the first data to the first device, or does not feed back the HARQ information of the first data to the first device.
  • the eighth configuration information may be indicated by a base station instruction (for example, system information block SIB or RRC signaling), or may be indicated by another terminal device for sidelink communication (for example, indicated by RRC, MAC signaling, etc.) ), the embodiment of the present application does not limit this.
  • S404 The second device receives the first data sent by the first device.
  • the moment when the second device receives the first data sent by the first device may be the same or different from the moment when the second device receives the second indication information sent by the first device. This is not done in this embodiment of the application. limited.
  • the second device feeds back the HARQ information of the first data to the first device according to the second indication information, or does not feed back the HARQ information of the first data to the first device.
  • the second device feeds back HARQ information of the first data to the first device according to the second instruction information, which may include: The second device determines the distance between the first device and the second device according to the twelfth information; and feeds back HARQ information according to the distance between the first device and the second device.
  • the twelfth information is used to indicate the location of the first device and the minimum communication distance. It can be understood that the embodiment of the present application does not limit the specific implementation manner in which the second device determines the distance between the first device and the second device according to the twelfth information. For details, reference may be made to the method in the prior art.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the first device and the second device If the distance is less than the minimum communication distance, the second device sends an ACK feedback to the first device; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device does not send feedback.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the first device and the second device If the distance between the two devices is less than the minimum communication distance, the second device does not send feedback; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device sends a NACK feedback to the first device.
  • the second feedback of HARQ information according to the distance between the first device and the second device includes: if the distance between the first device and the second device is less than the minimum For the communication distance, the second device sends an ACK feedback to the first device; if the distance between the first device and the second device is greater than or equal to the minimum communication distance, the second device sends a NACK feedback to the first device.
  • the second device does not feed back HARQ information of the first data to the first device.
  • the first device may repeatedly transmit the first data to the second device multiple times.
  • An embodiment of the present application provides a communication method.
  • the method obtains second indication information through a first device; the first device sends second indication information and first data to a second device; the second device obtains second indication information;
  • the device receives the first data sent by the first device; the second device feeds back the HARQ information of the first data to the first device according to the second indication information.
  • the first device acquires the HARQ information of the second device to feed back the first data to the first device, so that the first device can instruct the second device to switch between different feedback methods.
  • This method can be applied to more Multiple scenarios improve the reliability of communication between transmitter and receiver.
  • the embodiments of the present application also provide a terminal device.
  • the terminal device may be one or more components or units of a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit built in a vehicle.
  • the vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or terminal device in the vehicle-mounted unit implements the communication method in the foregoing embodiment.
  • a communication device includes hardware structures and/or software modules corresponding to each function.
  • this application can be implemented in a combination of hardware and computer software. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application may divide the communication device into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 5 shows a possible structural schematic diagram of the first device involved in the above embodiment.
  • the first device 500 includes: a processing unit 501 and a communication unit 502 .
  • the processing unit 501 may execute S301-S302 in FIG. 3 or S401-S402 in FIG. 4 through the communication unit 502.
  • the communication unit 502 may be used for sending and receiving information, or for communicating with other network elements, and/or for other processes of the technology described herein.
  • all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.
  • FIG. 6 shows a possible structural schematic diagram of the second device involved in the above embodiment.
  • the second device 600 includes: a processing unit 601 and a communication unit 602 .
  • the processing unit 601 may execute S303-S305 in FIG. 3 or S403-S405 in FIG. 4.
  • the communication unit 602 may be used for sending and receiving information, or for communicating with other network elements, and/or for other processes of the technology described herein.
  • all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.
  • FIG. 7 shows a possible schematic structural diagram of the first device 700 involved in the foregoing embodiment.
  • the first device 700 includes a processor 701 and a transceiver 702.
  • the processor 701 is used to control and manage the actions of the first device 700.
  • the processor 701 can execute S301-S302 in FIG. 3 through the transceiver 702. , Or S401-S402 in Figure 4, and/or other processes used in the techniques described herein.
  • the transceiver 702 sends and receives information, or is used to communicate with other network elements, and/or is used in other processes of the technology described herein.
  • the above-mentioned first device 700 may further include a memory 703 configured to store the program code and data corresponding to the first device 700 to execute any of the communication methods provided above.
  • the memory 703 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • the first device 700 may be the communication device shown in FIG. 2, and the description of all related content of the components involved in FIG. 2 can be referenced to the functional description of the corresponding components in FIG. 7, and will not be repeated here.
  • FIG. 8 shows a schematic diagram of a possible structure of the second device 800 involved in the foregoing embodiment.
  • the second device 800 includes a processor 801 and a transceiver 802.
  • the processor 801 is used to control and manage the actions of the second device 800.
  • the processor 801 can execute S303-S305 in FIG. 3 or FIG. 4 S403-S405, and/or other processes used in the technology described herein.
  • the transceiver 802 is used for sending and receiving information, or for communicating with other network elements, and/or for other processes of the technology described herein.
  • the above-mentioned second device 800 may further include a memory 803 configured to store the program code and data corresponding to any of the communication methods provided above by the second device 800.
  • the memory 803 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • the second device 800 may be the communication device shown in FIG. 2, and the description of all related content of the components involved in FIG. 2 can be quoted from the functional description of the corresponding components in FIG. 8, which will not be repeated here.
  • the steps of the method or algorithm described in conjunction with the disclosure of this application can be implemented in a hardware manner, or implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (Random Access Memory, RAM), flash memory, erasable programmable read-only memory (Erasable Programmable ROM, EPROM), and electrically erasable Programming read-only memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the ASIC may be located in the core network interface device.
  • the processor and the storage medium may also exist as discrete components in the core network interface device.
  • the functions described in this application can be implemented by hardware, software, firmware or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

Abstract

本申请实施例公开了一种通信方法和装置，涉及通信技术领域，可以应用于车联网，例如V2X、LTE-V、V2V等，解决了现有技术中发射机或接收机的地理位置信息丢失，造成接收机无法根据地理位置信息确定收发机之间的距离，影响了业务的传输效率的问题。具体方案为：第一设备获取第一指示信息；第一设备向第二设备发送第一指示信息和第一数据，第一指示信息包括第一信息，第一信息用于指示第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示第二设备基于信号质量信息对第一数据反馈HARQ信息。

Description

一种通信方法和装置
本申请要求于2019年04月30日提交国家知识产权局、申请号为201910364459.2、申请名称为“一种通信方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种通信方法和装置。
背景技术
设备到设备(Device to Device，D2D)通信、车与车(Vehicle to Vehicle，V2V)通信、车与行人(Vehicle to Pedestrian，V2P)通信或车与基建/网络(Vehicle to Infrastructure/Network，V2I/N)通信。V2V、V2P以及V2I/N统称为V2X(vehicle to everything，V2X)，即车与任何事物相通信。在5G新无线电(New Radio，NR)V2X中，为了满足传输的可靠性要求，需要确定收发机之间的距离。现有技术中，基站可以发送定位参考信号，以实现基站与终端之间在一定精度范围内的定位。
但是，实际应用中，由于各种原因，发射机或接收机的地址位置信息可能丢失。因此根据现有的方法，接收机将无法根据地理位置信息确定在侧行链路上发射机和接收机之间的距离，影响业务的传输效率。
发明内容
本申请实施例提供一种通信方法和装置，能够在发射机或接收机的地理位置信息丢失的情况下，提高业务的传输效率和通信可靠性。
为达到上述目的，本申请实施例采用如下技术方案：
本申请实施例的第一方面，提供一种通信方法，该方法包括：第一设备获取第一指示信息；该第一设备向第二设备发送上述第一指示信息和第一数据，该第一指示信息包括第一信息，该第一信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示上述第二设备基于信号质量信息对第一数据反馈HARQ信息。基于本方案，通过第一设备获取第二设备向第一设备反馈第一数据的HARQ信息的方式，使得第一设备可以指示第二设备在多种反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第一设备获取第一配置信息，该第一配置信息用于指示上述第一指示信息；或者，上述第一设备获取信道质量信息，第一设备根据该信道质量信息获取上述第一指示信息。基于本方案，第一设备可以根据网络设备发送的第一配置信息或信道质量信息，确定第二设备的反馈方式。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第一设备获取第二配置信息，该第二配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值；该一组或多组服务 质量参数包括上述第一数据的服务质量参数。基于本方案，第一设备可以接收网络设备发送的或预配置的服务质量参数和信号质量门限值之间的对应关系。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第一设备根据上述第一数据的服务质量参数，确定该第一数据的服务质量参数对应的第一信号质量门限值，该第一信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第一信号质量门限值。基于本方案，第一设备可以根据服务质量参数和信号质量门限值之间的对应关系，确定第一数据的服务质量参数对应的信号质量门限值。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第一设备获取第三配置信息，该第三配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值；该一个或多个功率参数包括上述第一设备发送所述第一数据时的功率参数。基于本方案，第一设备可以接收网络设备发送的或预配置的功率参数和信号质量门限值之间的对应关系。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第一设备根据上述第一设备发送上述第一数据时的功率参数，确定该第一设备发送第一数据时的功率参数对应的第二信号质量门限值，该第二信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第二信号质量门限值。基于本方案，第一设备可以根据功率参数和信号质量门限值之间的对应关系，确定第一设备发送第一数据时的功率参数对应的信号质量门限值。
本申请实施例的第二方面，提供一种通信方法，该方法包括：第二设备获取第一指示信息，该第一指示信息包括第一信息，该第一信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息；上述第二设备接收第一设备发送的上述第一数据；上述第二设备根据上述第一指示信息向第一设备反馈该第一数据的HARQ信息。基于本方案，通过第二设备获取第二设备向第一设备反馈第一数据的HARQ信息的方式，使得第二设备可以根据第一指示信息在多种反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
结合第二方面，在一种可能的实现方式中，上述方法还包括：上述第二设备获取第五配置信息，该第五配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值；该一组或多组服务质量参数包括上述第一数据的服务质量参数。基于本方案，第二设备可以接收网络设备发送的或预配置的服务质量参数和信号质量门限值之间的对应关系。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，当上述第一信息用于指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息时，该第二设备根据上述第一指示信息向上述第一设备反馈HARQ信息，包括：上述第二设备根据第一数据的服务质量参数，确定该第一数据的服务质量参数对应的第一信号质量门限值，该第一信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第一信号质量门限值；该第二设备根据上述信号质量信息和该第一信号质量门限值，向上述第一设备反馈HARQ信息。基于本方案， 第二设备可以根据服务质量参数和信号质量门限值之间的对应关系，确定第一数据的服务质量参数对应的信号质量门限值，并基于该门限值和信号质量信息向第一设备反馈HARQ信息。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，上述方法还包括：上述第二设备获取第六配置信息，该第六配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值；该一个或多个功率参数包括上述第一设备发送上述第一数据时的功率参数。基于本方案，第二设备可以接收网络设备发送的或预配置的功率参数和信号质量门限值之间的对应关系。
结合第二方面和上述可能的实现方式，在另一种可能的实现方式中，当上述第一信息用于指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息时，第二设备根据上述第一指示信息向上述第一设备反馈HARQ信息，包括：第二设备根据上述第一设备发送上述第一数据时的功率参数，获取其对应的第二信号质量门限值，该第二信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第二信号质量门限值；第二设备根据上述信号质量信息和该第二信号质量门限值，向第一设备反馈HARQ信息。基于本方案，第二设备可以根据功率参数和信号质量门限值之间的对应关系，确定第一设备发送第一数据时的功率参数对应的信号质量门限值，并基于该门限值和信号质量信息向第一设备反馈HARQ信息。
本申请实施例的第三方面，提供一种通信装置，该装置包括：处理单元和通信单元；该处理单元用于通过通信单元获取第一指示信息；向第二设备发送上述第一指示信息和第一数据，该第一指示信息包括第一信息，该第一信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示上述第二设备基于信号质量信息对第一数据反馈HARQ信息。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于：通过通信单元获取第一配置信息，该第一配置信息用于指示上述第一指示信息；或者，获取信道质量信息，根据该信道质量信息获取上述第一指示信息。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于：通过通信单元获取第二配置信息，该第二配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值；该一组或多组服务质量参数包括上述第一数据的服务质量参数。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于根据上述第一数据的服务质量参数，确定该第一数据的服务质量参数对应的第一信号质量门限值，该第一信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第一信号质量门限值。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于：通过通信单元获取第三配置信息，该第三配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值；该一个或多个功率参数包括上述通信装置发送所述第一数据时的功率参数。
结合第三方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单 元，还用于根据上述通信单元发送上述第一数据时的功率参数，确定该通信装置发送第一数据时的功率参数对应的第二信号质量门限值，该第二信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第二信号质量门限值。
本申请实施例的第四方面，提供一种通信装置，该装置包括：处理单元和通信单元；该处理单元，用于通过通信单元获取第一指示信息，该第一指示信息包括第一信息，该第一信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息；接收第一设备发送的上述第一数据；根据上述第一指示信息向第一设备反馈该第一数据的HARQ信息。
结合第四方面，在一种可能的实现方式中，上述方法还包括：上述处理单元，还用于通过通信单元获取第五配置信息，该第五配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值；该一组或多组服务质量参数包括上述第一数据的服务质量参数。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于根据第一数据的服务质量参数，确定该第一数据的服务质量参数对应的第一信号质量门限值，该第一信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第一信号质量门限值；上述处理单元，具体用于根据上述信号质量信息和该第一信号质量门限值，通过上述通信单元向上述第一设备反馈HARQ信息。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于通过通信单元获取第六配置信息，该第六配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值；该一个或多个功率参数包括上述第一设备发送上述第一数据时的功率参数。
结合第四方面和上述可能的实现方式，在另一种可能的实现方式中，上述处理单元，还用于根据上述第一设备发送上述第一数据时的功率参数，获取其对应的第二信号质量门限值，该第二信号质量门限值为上述一个或多个信号质量门限值中的一个，上述第一数据对应的信号质量门限值为该第二信号质量门限值；上述处理单元，具体还用于根据上述信号质量信息和该第二信号质量门限值，通过上述通信单元向第一设备反馈HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述距离信息为上述第一设备和上述第二设备之间的距离，上述信号质量信息为上述第二设备接收上述第一设备发送的信号的信号质量信息。基于本方案，第二设备可以基于第一设备和第二设备之间的距离，和/或，第二设备接收第一设备发送的信号的信号质量信息，向第一设备反馈第一数据的HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一数据是在上述第一设备发送上述第一指示信息的时隙中发送的。基于本方案，第一设备可以在第一设备发送第一指示信息的时隙中发送第一数据。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上 述第一指示信息包括第一字段，该第一字段的不同取值用于指示上述第二设备基于距离信息对上述第一数据反馈HARQ信息，和/或，指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息。基于本方案，可以用第一指示信息中的第一字段指示第二设备不同的反馈方式。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一信息还用于指示上述第二设备不对上述第一数据反馈HARQ信息。基于本方案，第二设备的反馈方式还包括不向第一设备反馈第一数据的HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一字段的不同取值还用于指示上述第二设备不对上述第一数据反馈HARQ信息。基于本方案，第一字段的取值还可以指示第二设备不向第一设备反馈第一数据的HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第二信息，该第二信息用于指示上述第一信息生效。基于本方案，第二信息的不同取值可以指示第一信息生效和第一信息不生效，第一信息不生效是指第二设备可以不对第一数据反馈HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述信号质量包括：参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI，以及信号与干扰加噪声比SINR中的任意一种或多种。基于本方案，第二设备可以基于RSRP、RSRQ、RSSI，以及SINR中的一种或多种向第一设备反馈第一数据的HARQ信息。可选的，该信号质量可以为物理层的质量。例如，物理层的RSRP、物理层的RSRQ、物理层的RSSI，以及物理层的SINR。可选的，上述信号质量可以是高层经过采样、滤波后的RSRP，RSRQ，RSSI，本申请各实施例不作限制。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述反馈HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。基于本方案，第二设备向第一设备反馈第一数据的HARQ时，可以仅发送ACK，或者，仅发送NACK，或者，发送ACK或NACK。例如，当接收机成功解出第一数据时，发送ACK，当接收机没有成功解出第一数据时，不发送ACK，也不发送NACK；或者，当接收机成功解出第一数据时，不发送ACK，当接收机没有成功解出第一数据时，发送NACK；或者，当接收机成功解出第一数据时，发送ACK，当接收机没有成功解出第一数据时，发送NACK。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第三信息，该第三信息用于指示上述第一数据的传输次数、上述第一数据的多次传输间的时域关系指示信息、上述第一数据的多次传输间的频域关系指示信息中的一种或多种。基于本方案，可以在第一设备指示第二设备不向第一设备反馈第一数据的HARQ时，指示上述第三信息。可选的，例如，第一数据在做无HARQ反馈的传输时，第一数据的传输次数N可以为1，2，4，8中的一种或多种。可选地，第三信息可以指示第一数据的传输次数N。可选地，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的时域间隔的指示信息可以通过第三信息 指示。可选的，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的频域资源的间隔的指示信息可以通过第三信息指示。可选地，当第一数据在N次传输使用时域跳频和/或频域跳频的方式来传输时，上述第三信息还用来指示跳频的参数。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第四信息，该第四信息用于指示上述第一设备的位置。基于本方案，通过在第一指示信息中指示第一设备的位置，从而第二设备可以根据第一设备的位置确定第一设备和第二设备之间的距离。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第四信息还用于指示上述第一数据的最小通信距离。基于本方案，通过在第一指示信息中指示第一数据的最小通信距离，从而第二设备可以根据第一设备和第二设备之间的位置，以及该最小通信距离，向第一设备反馈第一数据的HARQ信息。比如，当第二设备与第一设备之间的距离小于或等于最小通信距离时，第二设备根据第一数据的接收状态确定反馈HARQ信息；反之，第二设备不反馈HARQ信息。可选的，上述第四信息同时用于指示第一设备的位置和第一数据的最小通信距离时，可以使用一个联合的字段，也可以使用两个或多个不同的字段来指示。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第五信息，该第五信息用于指示上述第一数据对应的信号质量门限值。基于本方案，第二设备可以根据第一数据对应的信号质量门限，以及信号质量信息，向第一设备反馈第一数据的HARQ信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息包括第二字段，第二字段的不同取值用于指示第四信息或第五信息。基于本方案，上述第四信息和第五信息可以复用第一指示信息中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息包括第三字段，所述第三字段的不同取值用于指示第三信息或第四信息或第五信息。基于本方案，第三信息、第四信息和第五信息可以复用SCI中的第三字段，在第三字段的取值不同时，该第三字段指示的信息是不同的。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息包括第四字段，所述第一指示信息还包括第八信息，所述第八信息用于指示该第四字段指示的信息为第三信息或第四信息或第五信息。基于本方案，第三信息、第四信息和第五信息可以复用SCI中的第四字段，可以通过第八信息确定第四字段指示的是哪个信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，当上述第一信息用于指示上述第二设备不对上述第一数据反馈HARQ信息时，上述第四字段用于指示第三信息；当上述第一信息用于指示上述第二设备基于距离信息对上述第一数据反馈HARQ信息时，上述第四字段用于指示第四信息；当上述第一信息用于指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息时，所述第四字段用于指示第五信息。基于本方案，第三信息、第四信息和第五信息可以复用SCI中的第四字段，可以通过第一信息确定第四字段指示的是哪个信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第六信息，该第六信息用于指示上述第一设备发送上述第一数据时的功率参数；该功率参数包括：发射功率变化值、发射功率值，或发射功率的余量值。基于本方案，第一设备可以向第二设备发送第一设备发射第一数据时的功率参数。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，第二字段的不同取值用于指示第四信息或第六信息。基于本方案，上述第四信息和第六信息可以复用第一指示信息中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，第三字段的不同取值用于指示所述第三信息或第四信息或第六信息。基于本方案，第三信息、第四信息和第六信息可以复用SCI中的第三字段，在第三字段的取值不同时，该第三字段指示的信息是不同的。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第九信息，所述第九信息用于指示第四字段指示的信息为第三信息或第四信息或第六信息。基于本方案，第三信息、第四信息和第六信息可以复用SCI中的第四字段，可以通过第九信息确定第四字段指示的是哪个信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，当上述第一信息用于指示所述第二设备不对上述第一数据反馈HARQ信息时，上述第四字段用于指示第三信息；当上述第一信息用于指示所述第二设备基于距离信息对上述第一数据反馈HARQ信息时，上述第四字段用于指示第四信息；当上述第一信息用于指示上述第二设备基于信号质量信息对上述第一数据反馈HARQ信息时，上述第四字段用于指示第六信息。基于本方案，第三信息、第四信息和第六信息可以复用SCI中的第四字段，可以通过第一信息确定第四字段指示的是哪个信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一指示信息还包括第七信息，该第七信息用于指示上述第一数据的服务质量参数；该服务质量参数包括优先级信息、时延信息、可靠性信息、数据包的大小中的一种或多种。基于本方案，第一设备可以向第二设备发送第一数据的服务质量参数，使得第二设备可以基于该第一数据的服务质量参数确定其对应的信号质量门限值。
结合第一方面或第三方面，在一种可能的实现方式中，第一配置信息、第二配置信息，以及第三配置信息中的一种或多种携带在系统信息块SIB、无线资源控制RRC信令或预配置的信令中。基于本方案，能够通过SIB、RRC信令或预配置的信令接收配置信息。
结合第二方面或第四方面，在一种可能的实现方式中，第五配置信息和/或第六配置信息，携带在系统信息块SIB、无线资源控制RRC信令或预配置的信令中。基于本方案，能够通过SIB、RRC信令或预配置的信令接收配置信息。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，上述第一信息、第二信息、第三信息、第四信息、第五信息、第六信息、第七信息、第八信息，以及第九信息中的一个或多个携带在侧行链路控制信息SCI中。基于本方案， 可以在SCI中携带第一信息、第二信息、第三信息、第四信息、第五信息、第六信息、第七信息、第八信息，以及第九信息中的一个或多个。
结合第一方面、第二方面、第三方面或第四方面，在另一种可能的实现方式中，上述第一信息由上述SCI中的显式信令、上述SCI的信道格式或发送上述SCI使用的CRC的掩码指示。基于本方案，第一信息可以由SCI中的不同方式指示。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，第三信息、第四信息、第五信息、第六信息，或第七信息中的一部分比特位携带在SCI中，另一部分比特位携带在MAC消息、RRC消息或应用层消息中。基于本方案，由于SCI中的比特位有限，因此可以将第三信息、第四信息、第五信息、第六信息，或第七信息的一部分比特位携带在SCI中，另一部分比特位携带在MAC消息、RRC消息或应用层消息中。
结合第一方面、第二方面、第三方面或第四方面，在一种可能的实现方式中，第三信息、第四信息、第五信息、第六信息，以及第七信息中的一个或多个携带在MAC消息、RRC消息或应用层消息中。基于本方案，由于SCI中的比特位有限，可以将第三信息、第四信息、第五信息、第六信息，以及第七信息中的一个或多个携带在MAC消息、RRC消息或应用层消息中，以节省SCI中的信令开销。
本申请实施例的第五方面，提供一种通信方法，该方法包括：第一设备获取第二指示信息；该第一设备向第二设备发送该第二指示信息和第一数据，该第二指示信息包括第十信息，该第十信息用于指示第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。基于本方案，通过第一设备获取第二设备向第一设备反馈第一数据的HARQ信息的方式，使得第一设备可以指示第二设备在不同的反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
结合第五方面，在一种可能的实现方式中，上述方法还包括：上述第一设备获取第七配置信息，该第七配置信息用于指示上述第二指示信息；或者，上述第一设备获取信道质量信息，根据该信道质量信息获取上述第二指示信息。基于本方案，第一设备可以根据网络设备发送的第七配置信息或信道质量信息，确定第二设备的反馈方式。
本申请实施例的第六方面，提供一种通信方法，该方法包括：第二设备获取第二指示信息，该第二指示信息包括第十信息，该第十信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，或者，指示上述第二设备不对上述第一数据反馈HARQ信息；上述第二设备接收第一设备发送的上述第一数据；该第二设备根据上述第二指示信息向上述第一设备反馈上述第一数据的HARQ信息，或者，不向上述第一设备反馈上述第一数据的HARQ信息。基于本方案，通过第二设备获取其向第一设备反馈第一数据的HARQ信息的方式，使得第二设备可以根据第二指示信息在多种反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
本申请实施例的第七方面，提供一种通信装置，该装置包括：处理单元和通信单元；该处理单元，用于通过通信单元获取第二指示信息；向第二设备发送该第二指示信息和第一数据，该第二指示信息包括第十信息，该第十信息用于指示第二设备基于 距离信息对第一数据反馈混合自动重传请求HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。
结合第七方面，在一种可能的实现方式中，上述方法还包括：上述处理单元，用于通过通信单元获取第七配置信息，该第七配置信息用于指示上述第二指示信息；或者，获取信道质量信息，根据该信道质量信息获取上述第二指示信息。
本申请实施例的第八方面，提供一种通信装置，该装置包括：处理单元和通信单元；该处理单元，用于通过通信单元获取第二指示信息，该第二指示信息包括第十信息，该第十信息用于指示上述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，或者，指示上述第二设备不对上述第一数据反馈HARQ信息；接收第一设备发送的上述第一数据；根据上述第二指示信息向上述第一设备反馈上述第一数据的HARQ信息，或者，不向上述第一设备反馈上述第一数据的HARQ信息。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述距离信息为上述第一设备和所述第二设备之间的距离。基于本方案，第二设备可以基于第一设备和第二设备之间的距离，向第一设备反馈第一数据的HARQ信息。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第一数据是在上述第一设备发送上述第二指示信息的时隙中发送的。基于本方案，第一设备可以在第一设备发送第二指示信息的时隙中发送第一数据。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第二指示信息包括第一字段，该第一字段的不同取值用于指示所述第二设备基于距离信息对上述第一数据反馈HARQ信息，或者，指示上述第二设备不对上述第一数据反馈HARQ信息。基于本方案，可以用第二指示信息中的第一字段指示第二设备不同的反馈方式。
结合第五方面或第七方面，在一种可能的实现方式中，上述第七配置信息携带在系统信息块SIB、无线资源控制RRC信令或预配置的信令中。基于本方案，能够通过SIB、RRC信令或预配置的信令接收配置信息。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第二指示信息还包括第十一信息，该第十一信息用于指示上述第一数据的传输次数、上述第一数据的多次传输间的时域关系指示信息、上述第一数据的多次传输间的频域关系指示信息中的一种或多种。基于本方案，可以在第一设备指示第二设备不向第一设备反馈第一数据的HARQ时，指示上述第十一信息。可选的，例如，第一数据在做无HARQ反馈的传输时，第一数据的传输次数N可以为1，2，4，8中的一种或多种。可选地，第十一信息可以指示第一数据的传输次数N。可选地，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的时域间隔的指示信息可以通过第十一信息指示。可选的，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的频域资源的间隔的指示信息可以通过第十一信息指示。可选地，当第一数据在N次传输使用时域跳频和/或频域跳频的方式来传输时，上述第十一信息还用来指示跳频的参数。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，所述反馈HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否 定应答NACK不发送ACK，或者，发送ACK或NACK。基于本方案，第二设备向第一设备反馈第一数据的HARQ时，可以仅发送ACK，或者，仅发送NACK，或者，发送ACK或NACK。例如，当接收机成功解出第一数据时，发送ACK，当接收机没有成功解出第一数据时，不发送ACK，也不发送NACK；或者，当接收机成功解出第一数据时，不发送ACK，当接收机没有成功解出第一数据时，发送NACK；或者，当接收机成功解出第一数据时，发送ACK，当接收机没有成功解出第一数据时，发送NACK。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第二指示信息还包括第十二信息，该第十二信息用于指示上述第一设备的位置。基于本方案，通过在第二指示信息中指示第一设备的位置，从而第二设备可以根据第一设备的位置确定第一设备和第二设备之间的距离。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第十二信息还用于指示上述第一数据的最小通信距离。基于本方案，通过在第二指示信息中指示第一数据的最小通信距离，从而第二设备可以根据第一设备和第二设备之间的位置，以及该最小通信距离，向第一设备反馈第一数据的HARQ信息。可选的，上述第十二信息同时用于指示第一设备的位置和第一数据的最小通信距离时，可以使用一个联合的字段，也可以使用两个或多个不同的字段来指示。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第二指示信息包括第二字段，该第二字段的不同取值用于指示上述第十一信息或上述第十二信息。基于本方案，上述第十一信息和第十二信息可以复用第二指示信息中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，上述第二指示信息包括第三字段，上述第二指示信息还包括第十三信息，该第十三信息用于指示上述第三字段指示的信息为上述第十一信息或上述第十二信息。基于本方案，上述第十一信息和第十二信息可以复用第二指示信息中的第三字段，可以通过第十三信息确定第三字段指示的是哪个信息。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，当上述第十信息用于指示上述第二设备基于距离信息对上述第一数据反馈HARQ信息时，上述第三字段指示第十二信息；当第十信息用于指示上述第二设备不对上述第一数据反馈HARQ信息时，上述第三字段指示第十一信息。基于本方案，第十一信息和第十二信息可以复用SCI中的第三字段，可以通过第十信息确定第三字段指示的是哪个信息。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，所述第十信息、第十一信息、第十二信息，以及第十三信息中的一个或多个携带在侧行链路控制信息SCI中。基于本方案，可以在SCI中携带第十信息、第十一信息、第十二信息、第十三信息中的一个或多个。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，第十一信息和/或第十二信息中的一部分比特位携带在SCI中，另一部分比特位携带在MAC消息、RRC消息或应用层消息中。基于本方案，由于SCI中的比特位有限，因 此可以将第十一信息和/或第十二信息的一部分比特位携带在SCI中，另一部分比特位携带在MAC消息、RRC消息或应用层消息中。
结合第五方面、第六方面、第七方面或第八方面，在一种可能的实现方式中，第十一信息和/或第十二信息携带在MAC消息、RRC消息或应用层消息。基于本方案，由于SCI中的比特位有限，可以将第十一信息和/或第十二信息携带在MAC消息、RRC消息或应用层消息中，以节省SCI中的信令开销。
上述第三方面以及第三方面的各种实现方式可以参考第一方面和第一方面的各种实现方式的相应效果的描述，上述第四方面以及第四方面的各种实现方式可以参考第二方面和第二方面的各种实现方式的相应效果的描述，上述第七方面以及第七方面的各种实现方式的效果描述可以参考第五方面和第五方面的各种实现方式的相应效果的描述，上述第八方面以及第八方面的各种实现方式和第六方面以及第六方面的各种实现方式的效果描述，在此不再赘述。
本申请实施例的第九方面，提供一种计算机存储介质，所述计算机存储介质中存储有计算机程序代码，当所述计算机程序代码在处理器上运行时，使得所述处理器执行上述任一方面所述的通信方法。
本申请实施例的第十方面，提供了一种计算机程序产品，该程序产品储存有上述处理器执行的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案的程序。
本申请实施例的第十一方面，提供了一种通信装置，该装置包括收发器、处理器以及存储器，收发器，用于收发信息，或者用于与其他网元通信；存储器，用于存储计算机执行指令；处理器，用于执行所计算机执行指令实现上述任一方面所述的通信方法。
本申请实施例的第十二方面，提供了一种通信装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器，还可以包括存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述任一方面所述的方法。
本申请实施例的第十三方面，提供了一种通信装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和接口电路，该处理器用于通过接收电路与其它装置通信，使得该装置执行上述任一方面所述的方法。
本申请实施例的第十四方面，提供了一种终端设备，包括上述各方面及相关实现方式的装置。该终端设备可以作为一个或多个部件或者单元内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置在车载模块、车载模组、车载部件、车载芯片或者车载单元中的终端设备实施上述任一方面所述的方法。
本申请实施例的第十五方面，提供了一种系统，包括上述第三方面及相关实现方式的装置，以及上述第四方面及相关实现方式的装置。
本申请实施例的第十六方面，提供了一种系统，包括上述第七方面及相关实现方式的装置，以及上述第八方面及相关实现方式的装置。
附图说明
图1为本申请实施例提供的一种V2X通信场景的示意图；
图2为本申请实施例提供的一种通信设备的结构示意图；
图3为本申请实施例提供的一种通信方法的流程示意图；
图4为本申请实施例提供的另一种通信方法的流程示意图；
图5为本申请实施例提供的一种第一设备的组成示意图；
图6为本申请实施例提供的一种第二设备的组成示意图；
图7为本申请实施例提供的另一种第一设备的组成示意图；
图8为本申请实施例提供的另一种第二设备的组成示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。在本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或，a和b和c，其中a、b和c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分，本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定。比如，本申请实施例中的第一设备中的“第一”和第二设备中的“第二”仅用于区分不同的设备。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请实施例提供一种通信方法，该通信方法应用于图1所示的V2X通信场景中。如图1所示，第一设备和第二设备之间通过侧链路(Sidelink，SL)通信，侧链路指的是V2X网络中的辅链路，V2X网络中除了辅链路外，还有上行链路(uplink)以及下行链路(downlink)。
示例性的，V2X通信包括车与车通信(Vehicle-to-Vehicle，V2V)、车与路侧基础设施通信(Vehicle-to-Infrastructure，V2I)、车与人通信(Vehicle to People，V2P)，以及车与应用服务器通信(Vehicle-to-Network，V2N)等。图1中仅以第一设备和第二设备均为车的V2V通信为例进行示意，本申请实施例对于V2X的具体通信场景并不进行限定。例如，第一设备和第二设备可以是车载设备与车载设备之间相互通信，也可以是路侧单元(Road Side Unit，RSU)与车载设备和/或网络设备(如基站设备)之间进行通信，还可以是网络设备(如基站设备)与车载设备和/或RSU之间进行通信等，该网络设备(可以为LTE基站设备或NR基站设备或后续演进系统中的基站。可以理解的，本申请实施例对于第一设备和第二设备的具体形式并不进行限定，在此仅是示例性说明。示例性的，图1中的无线接入网设备可以是基站，或者是提供无线接入的网络中的设备。
可以理解的，本申请提供的通信方法不仅可以适用于图1所示的侧行链路，也可以用于蜂窝链路中，本申请实施例对于该通信方法适用的场景并不进行限定，在此仅是示例性说明。本申请实施例中的第一设备和第二设备为通信设备，该通信设备可以是终端设备，也可以是网络设备。当第一设备是网络设备时，上述侧行链路可以是基站和基站之间的链路。例如，宏基站和宏基站之间的链路，或者，宏基站和小基站之间的链路，或者，主基站和辅基站之间的链路，或者，主基站和主基站之间的链路，或者，辅基站和辅基站之间的链路等，本申请实施例对此并不进行限定。
图2为本申请实施例提供的一种通信设备，该通信设备可以为本申请中的第一设备或第二设备。该通信设备可以是车辆；也可以是安装在车辆上用于辅助车辆行驶的车载通信装置或者车载终端，或者车载通信装置或车载终端内的芯片；还可以是内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元中的一个或多个部件或者单元。其中，该车载终端可以是用于实现无线通信功能的设备，例如终端或者可用于终端中的芯片等。其中，终端可以是5G网络或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的用户设备(User Equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备或可穿戴设备，虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。该车载终端可以是移动的，也可以是固定的。
如图2所示，该通信设备200包括至少一个处理器201，存储器202、收发器203以及通信总线204。
下面结合图2对该通信设备的各个构成部件进行具体的介绍：
处理器201是通信设备的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器201是一个中央处理器(central processing unit，CPU)，也可以是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者是被配置成实施本发明实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)。
其中，处理器201可以通过运行或执行存储在存储器202内的软件程序，以及调用存储在存储器202内的数据，执行通信设备的各种功能。
在具体的实现中，作为一种实施例，处理器201可以包括一个或多个CPU，例如图2中所示的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备可以包括多个处理器，例如图2中所示的处理器201和处理器205。这些处理器中的每一个可以是一个单核处理器 (single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个通信设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器202可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器202可以是独立存在，通过通信总线204与处理器201相连接。存储器202也可以和处理器201集成在一起。
其中，所述存储器202用于存储执行本发明方案的软件程序，并由处理器201来控制执行。
收发器203，用于与其他通信设备之间进行通信。当然，收发器203还可以用于与通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(Wireless Local Area Networks，WLAN)等。收发器203可以包括接收单元实现接收功能，以及发送单元实现发送功能。
通信总线204，可以是工业标准体系结构(Industry Standard Architecture，ISA)总线、外部通信设备互连(Peripheral Component，PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图2中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
图2中示出的通信设备结构并不构成对通信设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
为了确保NR-V2X网络中数据传输的可靠性、时延以及传输速率的性能要求，需要确定收发机之间的距离在最小通信距离范围内，以保证数据传输的可靠性。而要达到上述性能要求，就需要确定收发机之间的距离。但是由于各种原因，发射机(本申请实施例中的第一设备)或接收机(本申请实施例中的第二设备)的地址位置信息可能会丢失，因此接收机将无法根据发射机的地理位置信息确定在侧行链路上发射机和接收机之间的距离，影响业务的传输效率。
为了解决现有技术中在发射机或接收机的地理位置信息丢失时，接收机无法根据地理位置信息确定收发机之间的距离，影响了业务的传输效率的问题，本申请实施例提供一种通信方法，能够通过发送机发送的信令指示接收机切换反馈方式，提高数据传输的可靠性。
如图3所示，为本申请实施例提供的一种通信方法，该通信方法包括步骤S301-S305。
S301、第一设备获取第一指示信息。
该第一指示信息包括第一信息，该第一信息用于指示第二设备基于距离信息对第一数据反馈混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)信息，和/ 或，指示第二设备基于信号质量信息对第一数据反馈HARQ信息。其中，第一数据为第一设备发送的数据，第二设备为接收第一数据的设备。本申请实施例中第一设备在发送第一数据时为发射机，第二设备在接收第一数据时为接收机。可选的，该第一信息还可以用于指示第二设备不对第一数据反馈HARQ信息。
示例性的，上述距离信息可以为第一设备和第二设备之间的距离。上述信号质量信息可以为第二设备接收到的第一设备发送的信号的信号质量信息。例如，可以为第二设备接收到的第一设备发送的第一数据的信号质量，也可以为第二设备接收到的第一设备发送的第一指示信息的信号质量，还可以为在发送第一数据的时隙上发送的参考信号的信号质量，或者为在第一设备发送第一数据之前的一段时间的信号的信号质量，或者为信道拥塞程度等，本申请实施例对此并不进行限定，在此仅是示例性说明。
可选地，在本申请中，第二设备可以是一个设备，也可以是一组设备，还可以是不限数量的设备。当第一设备与第二设备进行侧行链路的通信时，对应的，可以是基于单播的通信，或基于组播的通信，或基于广播的通信。本申请对此不作限制。
示例性的，上述信号质量可以包括：参考信号接收功率(Reference Signal Received Power，RSRP)、参考信号接收质量(Reference Signal Received Quality，RSRQ)、接收信号强度指示(Received Signal Strength Indication，RSSI)，以及信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)中的任意一种或多种。该SINR是指接收到的有用信号的强度与接收到的干扰信号(噪声和干扰)的强度的比值。可选的，上述信号质量可以为物理层的质量。例如，物理层的RSRP(如L1-RSRP)、物理层的RSRQ(如L1-RSRQ)、物理层的RSSI(如L1-RSSI)，以及物理层的SINR(如L1-SINR)。
示例性的，上述第一信息用于指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息，或者，指示第二设备基于第一数据对应的信号质量对第一数据反馈HARQ信息，或者，指示第二设备基于第一设备和第二设备之间的距离以及第一数据对应的信号质量对第一数据反馈HARQ信息，或者，指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息以及基于第一数据对应的信号质量对第一数据反馈HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。
一种实现方式中，上述第一设备获取第一指示信息可以包括：第一设备获取第一配置信息，该第一配置信息用于指示上述第一指示信息。该第一配置信息可以为基站发送的配置信息。可以理解的，在该实现方式中，基站可以配置第二设备的反馈方式，并向第一设备发送该配置。第一设备可以根据基站的配置确定具体的反馈方式。可选的，该第一配置信息可以为第三设备通过信令指示给第一设备的，该第三设备可以为进行侧行通信的设备。可选的，该第一配置信息可以是预配置的。
可选的，第一设备可以接收基站配置的第一配置信息，该第一配置信息可以包括基于距离信息对第一数据反馈HARQ信息，和/或，基于信号质量信息对第一数据反馈HARQ信息，第一设备根据基站配置的第一配置信息确定第一指示信息。例如，在第一设备的位置信息丢失或失效或基于信号质量的反馈优先时，第一设备可以确定第一指示信息中的第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信 息。
示例性的，该第一配置信息可以通过基站指令(例如，系统信息块(System Information Block，SIB)或RRC信令)指示，也可以通过另一个做sidelink通信的终端设备指示(例如，通过RRC、媒体接入控制控制(Medium Access Control，MAC)消息等指示)，本申请实施例对此并不进行限定。可选的，MAC消息可以是MAC控制元(Control Element，CE)等指示。可选的，当该第一配置信息携带在RRC信令中时，该RRC信令可以是UE公共的RRC信令。可选的，当该第一配置信息可以携带在第三设备发送的消息中时，可以通过UE的侧行链路的RRC信令来指示。
另一种实现方式中，上述第一设备获取第一指示信息可以包括：第一设备获取信道质量信息，第一设备根据信道质量信息确定第一指示信息。
示例性的，信道质量信息可以是信道的拥塞程度，第一设备可以通过接收基站发送的信道的拥塞程度，确定第一指示信息。例如，可以在信道较拥塞时，确定第一信息用于指示第二设备不对第一数据反馈HARQ信息；也可以在信道不拥塞时，确定第一信息用于指示第二设备对第一数据反馈HARQ信息；还可以在信道拥塞时，确定第一信息用于指示第二设备基于第一设备和第二设备之间的距离反馈HARQ信息，或者指示第二设备不对第一数据反馈HARQ信息；还可以在信道不拥塞时，确定第一信息用于指示第二设备基于第一数据对应的信号质量反馈HARQ信息等。本申请实施例对于第一设备根据信道质量信息确定第一指示信息的具体规则并不进行限定，在此仅是示例性说明。
再一种实现方式中，上述第一设备获取第一指示信息可以包括：第一设备获取第一设备的位置，若第一设备获取不到第一设备的位置，第一设备确定第一指示信息用于指示第二设备基于第一数据对应的信号质量对第一数据反馈HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。若第一设备获取到了第一设备的位置，第一设备确定第一指示信息用于指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息，或者，指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息和基于第一数据对应的信号质量对第一数据反馈HARQ信息。
示例性的，上述第一设备的位置可以为第一设备的地理位置，该第一设备的地理位置可以是指基于卫星获得的位置坐标，例如全球定位系统(Global Positioning System，GPS)坐标，也可以是北斗位置坐标等。第一设备的位置还可以是基于其他的定位体制或定位技术获得的位置信息，例如基于惯性导航获得的位置信息，基于雷达获得的位置信息，基于网络设备与UE之间的定位信号获得的位置信息等，本申请实施例对此并不进行限定。可以理解的，第一设备获取不到自己的位置的原因可以包括当前第一设备的位置未被网络覆盖，或者网络信号较差等，本申请实施例对此并不进行限定。
需要说明的是，本申请实施例对于第一设备获取第一指示信息的具体方式并不进行限定，在此仅是示例性的说明。例如，第一设备还可以根据反馈资源是否充足、是否拥塞等，获取并确定第一指示信息。
示例性的，反馈上述HARQ信息的方式包括：发送肯定应答(Acknowledgement，ACK)不发送否定应答(Negative Acknowledgement，NACK)，比如，当接收机解调第一数据的译码结果为对时，发送ACK，当接收机解调第一数据的译码结果为错时， 不发送ACK，也不发送NACK；或者，发送否定应答NACK不发送ACK，比如，当接收机解调第一数据的译码结果为对时，不发送ACK，当接收机解调第一数据的译码结果为错时，发送NACK；或者，发送ACK或NACK，比如，当接收机解调第一数据的译码结果为对时，发送ACK，当接收机解调第一数据的译码结果为错时，发送NACK。即反馈HARQ信息包括仅发送ACK，或者，仅发送NACK，或者，发送ACK或NACK。
需要说明的是，本申请实施例中，如果不做特殊说明，第二设备发送ACK时均隐含或包括了第二设备解调第一数据的译码结果为对，第二设备发送NACK时均隐含或包括了第二设备解调第一数据的译码结果为错。
可选的，上述反馈HARQ信息的方式可以是网络设备(例如，基站设备)配置的或预配置的。网络设备可以通过信令指示反馈HARQ的具体方式。第一设备和/或第二设备可以根据基站配置的反馈HARQ的具体方式进行反馈。
可以理解的，本申请实施例中第一设备可以确定第二设备的多种反馈方式，并使用信令向第二设备发送该第一指示信息，从而使得第二设备的反馈方式可以在多种反馈方式之间进行切换，能够适用于更多场景，提高发射机和接收机之间通信的可靠性。
S302、第一设备向第二设备发送第一指示信息和第一数据。
示例性的，第一设备可以通过组播、单播或广播方式发送第一指示信息和第一数据。例如，第一设备可以向一个第二设备(单播场景)发送第一指示信息和第一数据，第一设备也可以向多个第二设备(组播场景)发送第一指示信息和第一数据，第一设备还可以向不限数量的第二设备(广播场景)发送第一指示信息和第一数据。可选地，当第一设备是向多个第二设备发送第一指示信息和第一数据时，第二设备可以是第一设备明确的接收机，也可以是第一设备未知或不明确的接收机，本申请实施例对此不做限定。
示例性的，上述第一设备发送第一指示信息和第一数据时，该第一指示信息和第一数据可以是同时发送的，也可以是不同时发送的，本申请实施例对此并不进行限定。可选的，该第一数据可以是在第一设备发送第一指示信息的时隙中发送的。可选的，该第一数据可以是在第一设备发送第一指示信息的时隙之前或之后发送的。可选的，第一指示信息可以是用来指示第一数据传输参数的信息。可选的，可以一个或多个第一数据共用一个第一指示信息。
可选地，第一设备发送第一指示信息时，该第一指示信息可以携带在侧行链路控制信息(Sidelink Control Information，SCI)中。示例性的，第一设备可以在发送第一数据时的时隙中发送SCI。
可选的，在SCI中，可以使用2、3或4个比特的字段指示第一信息，本申请实施例对于第一信息的具体比特数并不进行限定。
示例性的，当上述第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息，和/或，指示第二设备基于信号质量信息对第一数据反馈HARQ信息时，该第一信息可以用SCI中的第一字段表示，该第一字段的不同取值可以表示第二设备基于距离信息对第一数据反馈HARQ信息，和/或，指示第二设备基于信号质量信息对第一数据反馈HARQ信息。
可选的，当上述第一信息还用于指示第二设备不对第一数据反馈HARQ信息时，上述第一字段的不同取值可以用于指示上述多种不同的反馈方式。例如，以第一字段为2比特为例，该第一字段的值为0(对应二进制00)时，第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息；该第一字段的值为1(对应二进制01)时，第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信息；该第一字段的值为2(对应二进制10)时，第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息，和基于信号质量信息对第一数据反馈HARQ信息；该第一字段的值为3(对应二进制11)时，第一信息用于指示第二设备不对第一数据反馈HARQ信息。本申请实施例对于第一字段占用SCI的比特数并不进行限定，在此仅是示例性说明。
示例性的，上述第一指示信息还可以包括：第二信息，该第二信息用于指示第一信息生效。例如，该第二信息可以用SCI中的1比特表示，当该1比特字段的值为1时表示第一信息生效，即第一信息用于指示第二设备基于距离信息和/或信号质量信息对第一数据反馈HARQ信息；当该1比特的字段值为0时表示第一信息无效，例如，可以表示第二设备不对第一数据反馈HARQ信息。示例的，还可以使用0时表示第一信息生效，为1时表示第一信息无效，本发明对此不做限制。例如，该1比特为0，表示携带第一信息；该1比特为1，表示不携带第一信息，可以表示指示第二设备不对第一数据反馈HARQ信息。
可选的，第二信息指示第一信息不生效时，可以与第一信息共用一个字段的不同取值。例如，若第一字段为4比特，该4比特的值为0000或者1111时，可以指示第一信息无效，该4比特的其他取值可以用于指示上述第一信息，例如，0001可以指示第二设备基于信号质量反馈第一数据的HARQ信息。
示例性的，上述第一指示信息还可以包括：第三信息，该第三信息用于指示第一数据的传输次数、第一数据的多次传输间的时域关系指示信息、第一数据的多次传输间的频域关系指示信息中的一种或多种。第一数据的传输次数也可以称为第一数据的重复(Repetition)次数。可选的，例如，第一数据在做无HARQ反馈的传输时，第一数据的传输次数N可以为1，2，4，8中的一种或多种。可选地，第三信息可以指示第一数据的传输次数N。可选地，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的时域间隔的指示信息可以通过第三信息指示。可选的，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的频域资源的间隔的指示信息可以通过第三信息指示。可选地，当第一数据在N次传输使用时域跳频和/或频域跳频的方式来传输时，上述第三信息还用来指示跳频的参数。
示例性的，可以通过SCI指示该第三信息，或者，通过SCI携带第三信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第三信息。可选的，第三信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
示例性的，上述第一指示信息还可以包括：第四信息，该第四信息用于指示第一设备的位置。例如，第四信息可以指示第一设备所在的第一区域的标识，或者，指示第一设备的位置坐标(如GPS坐标)等，本申请实施例对于该第一设备的位置的具体 形式并不进行限定，在此仅是示例性说明。
可选的，该第四信息还用于指示第一数据的最小通信距离。该最小通信距离也可称为要求的最小通信距离或最小要求的通信距离，是指为了达到一定的传输时延、可靠性、速率时要求的最小距离。可选地，当发射机和接收机(可称为收发机)之间的距离小于或等于最小通信距离时，收发机之间的通信需要满足传输时延、可靠性、速率等方面的要求；当收发机间的距离大于或等于这个要求的最小距离时，收发机之间的通信不需要一定满足传输时延、可靠性、速率等方面的要求。第二设备可以比较其与第一设备之间的距离和最小通信距离，确定是否对第一数据反馈HARQ信息，比如当第二设备与第一设备之间的距离小于或等于最小通信距离时，第二设备根据第一数据的接收状态确定反馈HARQ信息；反之，第二设备不反馈HARQ信息。
示例性的，可以通过SCI指示该第四信息，或者，通过SCI携带第四信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第四信息。可选的，第四信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
可选的，上述第四信息同时用于指示第一设备的位置和第一数据的最小通信距离时，可以使用一个联合的字段，也可以使用两个或多个不同的字段来指示，本申请实施例对此并不进行限定。
示例性的，上述第一指示信息还可以包括：第五信息，该第五信息用于指示第一数据对应的信号质量门限值。可选的，当第一数据对应的信号质量大于或等于该信号质量门限值时，收发机之间的通信可靠性较高；当第一数据对应的信号质量小于或等于该信号质量门限值时，收发机之间的通信可靠性较低。该第一数据对应的信号质量可以为第二设备接收到的第一设备发送的第一数据的信号质量，也可以为第二设备接收到的第一设备发送的第一指示信息的信号质量，还可以为在发送第一数据的时隙上发送的参考信号的信号质量，或者为在第一设备发送第一数据之前的一段时间的信号的信号质量，或者为信道拥塞程度等，本申请实施例对此并不进行限定，在此仅是示例性说明。第二设备可以比较接收到的来自第一设备的信号质量和信号质量门限值，确定是否对第一数据反馈HARQ信息，比如当接收到的信号质量大于或等于信号质量门限值时，第二设备根据第一数据的接收状态确定反馈HARQ信息；反之，第二设备不反馈HARQ信息。
可选的，该第一数据对应的信号质量门限值可以为第一设备根据网络设备配置的服务质量参数和信号质量门限值的对应关系，确定的第一数据的服务质量参数对应的信号质量门限；可选的，该第一数据对应的信号质量门限值还可以为网络设备为第一设备配置的基于第一设备的位置、信道的拥塞程度、业务负载情况等确定的信号质量的门限值。可选的，该第一数据对应的信号质量门限值还可以为第一设备根据网络设备配置的功率参数和信号质量门限值的对应关系，确定的发送第一数据的功率参数对应的信号质量门限；可选的，该第一数据对应的信号质量门限值还可以为第一设备根据第一设备的位置、信道的拥塞程度、业务负载情况等确定的信号质量门限。示例性的，该第一设备的位置可以为第一设备的地理位置坐标，也可以为第一设备所在的第一区域的标识，本申请实施例对此并不进行限定。
示例性的，可以通过SCI指示该第五信息，或者，通过SCI携带第五信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第五信息。可选的，第五信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
可选的，上述第一指示信息还可以包括第二字段，该第二字段的不同取值用于指示第四信息或第五信息。例如，在SCI中，该第二字段为4比特，当该第二字段的值为0-10(对应二进制0000～1010)时，表示该第二字段指示的是第四信息，当该第二字段的值为11-15(对应二进制1011～1111)时，表示该第二字段指示的是第五信息。可以理解的，该第四信息和第五信息可以复用SCI中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
可选的，上述第一指示信息还可以包括第三字段，该第三字段的不同取值用于指示上述第三信息或上述第四信息或上述第五信息。该第三字段可以和上述第二字段的比特数相同也可以不同，本申请实施例对此并不限定。例如，在SCI中，该第三字段为4比特，当该第三字段的值为0-4时(对应二进制0000～0100)，表示第三字段指示的是上述第三信息；当该第三字段的值为5-10(对应二进制0101～1010)时，表示该第三字段指示的是上述第四信息；当该第三字段的值为11-15(对应二进制1011～1111)时，表示该第三字段指示的是上述第五信息。可以理解的，第三信息、第四信息和第五信息可以复用SCI中的第三字段，在第三字段的取值不同时，该第三字段指示的信息是不同的。
可选的，上述第一指示信息还可以包括第八信息，该第八信息用于指示SCI中的第四字段指示的信息为第三信息或第四信息或第五信息。例如，在SCI中，第八信息占用两个比特，该第四字段为4比特，当第八信息的值为0(对应二进制00)时，该第四字段指示的是上述第三信息；当第八信息的值为1(对应二进制01)时，该第四字段指示的是上述第四信息；当第八信息的值为2(对应二进制10)时，该第四字段指示的是上述第五信息。可以理解的，与上一实现方式不同的是，本实现方式中，可以通过一个单独字段指示第四字段指示的信息。
可选的，该第八信息可以为上述第一信息。
可以理解的，当第一信息用于指示第二设备不对第一数据反馈HARQ信息时，第四字段可以指示第三信息；当第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息时，第四字段可以指示第四信息；当第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信息时，第四字段可以指示第五信息。即在第二设备的反馈方式不同的时候，该第四字段代表的含义不同，上述第三信息、第四信息和第五信息可以复用上述第三字段。
需要说明的是，本申请实施例对于上述第一字段、第二字段、第三字段以及第四字段的比特数并不进行限定，在此仅是示例性说明。
示例性的，上述第一指示信息还可以包括：第六信息，该第六信息用于指示第一设备发送第一数据时的功率参数。例如，第一设备发送第一数据时的功率参数可以包括：第一设备发送第一数据时的发射功率变化值、第一设备发送第一数据时的发射功率值，或第一设备发送第一数据时的发射功率的余量值。可选的，所述发射功率变化 为发送第一数据时的发射功率相对上一次或之前的第K次的发射功率的变化，K为正整数。可选的，第一设备发送第一数据时的发射功率的余量值为第一设备发送第一数据时的发射功率相对最大发射功率之间的差值。
示例性的，可以通过SCI指示该第六信息，或者，通过SCI携带第六信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第六信息。可选的，第六信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
可选的，在上述第一指示信息不包括第五信息，但包括第六信息的情况下，上述第二字段的不同取值用于指示第四信息或第六信息。例如，在SCI中，该第二字段为4比特，当该第二字段的值为0-10(对应二进制0000～1010)时，表示该第二字段指示的是第四信息，当该第二字段的值为11-15(对应二进制1011～1111)时，表示该第二字段指示的是第六信息。可以理解的，该第四信息和第六信息可以复用SCI中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
可选的，在上述第一指示信息不包括第五信息，但包括第六信息的情况下，上述第三字段的不同取值用于指示上述第三信息或上述第四信息或上述第六信息。该第三字段可以和上述第二字段的比特数相同也可以不同，本申请实施例对此并不限定。例如，在SCI中，该第三字段为4比特，当该第三字段的值为0-4(对应二进制0000～0100)时，表示第三字段指示的是上述第三信息；当该第三字段的值为5-10(对应二进制0101～1010)时，表示该第三字段指示的是上述第四信息；当该第三字段的值为11-15(对应二进制1011～1111)时，表示该第三字段指示的是上述第六信息。可以理解的，第三信息、第四信息和第六信息可以复用SCI中的第三字段，在第三字段的取值不同时，该第三字段指示的信息是不同的。
可选的，上述第一指示信息还可以包括第九信息，该第九信息用于指示SCI中的第四字段指示的信息为第三信息或第四信息或第六信息。例如，在SCI中，第九信息占用两个比特，该第四字段为4比特，当第九信息的值为0(对应二进制00)时，该第四字段指示的是上述第三信息；当第九信息的值为1(对应二进制01)时，该第四字段指示的是上述第四信息；当第九信息的值为2(对应二进制10)时，该第四字段指示的是上述第六信息。可以理解的，与上一实现方式不同的是，本实现方式中，可以通过一个单独字段指示第四字段指示的信息。
可选的，该第九信息可以为上述第一信息。
可以理解的，当第一信息用于指示第二设备不对第一数据反馈HARQ信息时，第四字段可以指示第三信息；当第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息时，第四字段可以指示第四信息；当第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信息时，第四字段可以指示第六信息。即在第二设备的反馈方式不同的时候，该第四字段代表的含义不同，上述第三信息、第四信息和第六信息可以复用上述第三字段。
示例性的，上述第一指示信息还可以包括：第七信息，第七信息用于指示第一数据的服务质量参数。该服务质量(Quality of Service，QoS)参数包括一个或多个子参数，比如，子参数1：优先级信息、子参数2：时延信息、子参数3：可靠性信息，以 及子参数4：数据包的大小中的一种或多种。
示例性的，可以通过SCI指示该第七信息，或者，通过SCI携带第七信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第七信息。可选的，第七信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
可选地，优先级信息，用来指示或确定数据包的优先等级，优先级越高意味着它对应的数据包更重要或更紧急。
可选地，时延信息，指的是数据包传输时要求的最大的时延。可选地，例如有的数据包要求3ms之内到达接收机，有的数据包要求10ms之内达到接收机，有的数据包要求50ms之内达到接收机。
可选地，时延信息指示的最大端到端时延越小，则说明待发送的数据包越紧急，或需要更快地被发送、接收和处理。
可选地，可靠性信息指示数据包的可靠性要求。可选地，可靠性要求越高，如99.99％，则在传输时需要有更多的机制来保证数据包的正确接收，如需要有物理层的反馈或更多的重传次数等；可靠性要求越低，如90％，则在传输时可能不一定要求要做反馈，重传的次数也不一定要特别多。
可选地，数据包的大小，也可以是要求的传输速率。可选地，这个值越大，说明要传输的包或信息量越大，反之则说明要传输的包或信息量越小。
一种实现方式中，在上述步骤S301之前还可以包括：第一设备获取第二配置信息，该第二配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值。该一组或多组服务质量参数包括上述第一数据的服务质量参数，即第一设备可以根据该第二配置信息确定第一数据的服务质量参数对应的信号质量门限值。
示例性的，一组服务质量参数可以对应表1中的一行，类似的，多组服务质量参数可以对应表1中的多行。如表1所示，不同的业务对应的服务质量参数不同，即对应的服务质量参数中包括的一个或多个子参数中，至少一个子参数不同；即使对于同一种类型的业务，服务质量参数也可能不同，即对应的服务质量参数中包括的一个或多个子参数中，至少一个子参数不同。比如，对于同一种时延要求的业务，其优先级可能不同；或者，对于同一种优先级的业务，其对应的服务质量参数中的其它一个或多个子参数也可能相同或不同。
表1
Figure PCTCN2020075485-appb-000001
Figure PCTCN2020075485-appb-000002
示例性的，上述第二配置信息中一组服务质量参数可以对应多个信号质量门限值，不同的服务质量参数对应的信号质量门限值可以相同也可以不同，本申请实施例对此并不进行限定。
示例性的，上述第一设备获取的第二配置信息可以是通过接收网络设备发送的第二配置信息。该第二配置信息可以通过基站指令(例如，系统信息块SIB或RRC信令)指示，也可以通过另一个做sidelink通信的终端设备指示(例如，通过RRC、MAC信令等指示)，本申请实施例对此并不进行限定。
示例性的，上述第二配置信息中服务质量参数与信号质量门限值之间的对应关系可以通过显式的信令来配置，也可以以表格的方式存储在数据库中。该数据库可以以软件方式存储在图2所示存储器202中，或以硬件方式固化在处理器201中或通信设备200(第一设备)的其他部件中，本申请对此不做限制。可以理解的，本申请实施例中服务质量参数与信号质量门限值之间的对应关系也可以以其他形式，例如预置的方式或预定义的方式来确定。
示例性的，以服务质量参数包括优先级信息，该服务质量参数与信号质量门限值之间的对应关系可以用下表2A所示的表格表示。
表2A
优先级信息 信号质量门限值
0 R0
1 R1
2 R2
3 R3
4 R4
5 R5
6 R6
7 R7
示例性的，以服务质量参数包括优先级信息和时延信息为例，该服务质量参数与信号质量门限值之间的对应关系可以用表2B所示的表格表示。
表2B
Figure PCTCN2020075485-appb-000003
若服务质量参数包含优先级信息和时延信息，根据表2B可知，以该优先级信息为优先级2，最大端到端的时延为20ms米为例。根据表2B可知，该服务质量参数对应的信号质量门限值包括R2和R4。
示例性的，若一组服务质量参数包括多个子参数，上述第二配置信息可以包括多个子参数，以及每个子参数对应的信号质量门限值。例如，以服务质量参数包括优先级信息和时延信息为例，该服务质量参数与信号质量门限值之间的对应关系可以用表2A和表2C所示的表格表示。
表2C
Figure PCTCN2020075485-appb-000004
若服务质量参数包含优先级信息和时延信息，结合表2A和表2C可知，以优先级信息为优先级3，最大端到端的时延为20ms为例。根据表2A可知，优先级3对应的信号质量门限值为R3，根据表2C可知最大端到端的时延为20ms对应的信号质量门限值包括R2和R4。
可以理解的，服务质量参数与信号质量门限值之间的对应关系可以使用表格来表示，也可以使用其它方式(例如配置的信令)来表示，当使用表格来表示时，可以使用一张或多张表格来表示，本申请各实施例对此不作限制。
可选的，在该实现方式中，第一设备还可以根据上述第一数据的服务质量参数和 第二配置信息，确定第一数据的服务质量参数对应的第一信号质量门限值，该第一信号质量门限值为一个或多个信号质量门限值中的一个，该第一信号质量门限值为上述第一数据对应的信号质量门限值。
示例性的，结合表2B所示，一组服务质量参数可以对应一个或多个信号质量门限值。若第一数据的服务质量参数对应的信号质量门限值为多个，可以将第一数据的服务质量参数对应的信号质量门限值中的最小值、中间值、最大值、平均值或最小区域确定为第一信号质量门限值，本申请实施例对此并不进行限定，在此仅是示例性说明。
另一种实现方式中，在上述步骤S301之前还可以包括：第一设备获取第三配置信息，该第三配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值。该一个或多个功率参数包括第一设备发送第一数据时的功率参数，即第一设备可以根据该第三配置信息确定第一设备发送第一数据时的功率参数对应的信号质量门限值。
示例性的，上述第一设备获取的第三配置信息可以是通过接收网络设备发送的配置信息。该第三配置信息可以通过基站指令(例如，系统信息块SIB或RRC信令)指示，也可以通过另一个做sidelink通信的终端设备指示(例如，通过RRC、MAC信令等指示)，本申请实施例对此并不进行限定。
示例性的，以第一设备发送第一数据时的功率参数为发射功率为例，该发射功率与信号质量门限值之间的对应关系可以用下表3所示的表格表示。
表3
发射功率 信号质量门限值
P0 R0
P1 R1
P2 R2、R2
P3 R3
P4 R4、R1
P5 R5
P6 R6
P7 R7
示例性的，在该实现方式中，第一设备还可以根据上述第一设备发送第一数据时的功率参数和第三配置信息，确定第一设备发送第一数据时的功率参数对应的第二信号质量门限值，该第二信号质量门限值为一个或多个信号质量门限值中的一个，该第二信号质量门限值为上述第一数据对应的信号质量门限值。
示例性的，第一设备发送第一数据时的功率参数可以对应一个或多个信号质量门限值。若第一设备发送第一数据时的功率参数对应的信号质量门限值为多个，可以将第一设备发送第一数据时的功率参数对应的信号质量门限值中的最小值、中间值、最大值、平均值或最小区域确定为第一信号质量门限值，本申请实施例对此并不进行限定，在此仅是示例性说明。
再一种实现方式中，在上述步骤S301之前还可以包括：第一设备根据第一设备的 位置、信道的拥塞程度、业务负载情况等确定第一数据对应的信号质量门限。该第一设备的位置可以为第一设备的地理位置坐标，也可以为第一设备所在的第一区域的标识，也可以为第一设备的位置所属的区域等，本申请实施例对此并不进行限定。可选的，当第一设备在城市、高速公路、山区或郊区等不同位置时，和/或，当信道的拥塞程度不同时，和/或，当业务的密集程度不同时，第一数据对应的信号质量门限值可以不同。
在该实现方式中，第一设备还可以接收网络设备(例如，基站设备)发送的不同地理位置、信道拥塞程度、业务负载情况下对应的信号质量门限，并根据基站的配置确定第一数据对应的信号质量门限值。
可选的，第一设备还可以接收网络设备基于第一设备的位置、信道的拥塞程度、业务负载情况等为第一设备配置的信号质量的门限值。
S303、第二设备获取第一指示信息。
示例性的，第二设备获取第一指示信息，可以包括：第二设备接收第一设备发送的第一指示信息。
可选的，第二设备还可以接收网络设备(例如，基站设备)发送的第四配置信息，并根据网络设备发送的第四配置信息和第一设备发送的第一指示信息确定第二设备的反馈方式。该第四配置信息可以指示第二设备向第一设备反馈第一数据的HARQ信息，或不向第一设备反馈第一数据的HARQ信息。
可选的，上述第四配置信息也可以指示第二设备基于距离信息和/或信号质量信息向第一设备反馈HARQ信息。第二设备根据第四配置信息向第一设备反馈第一数据的HARQ信息。
可选的，第二设备可以根据基站配置的第四配置信息确定第二设备的具体反馈方式。例如，若第四配置信息指示第二设备基于距离信息和/或信号质量信息向第一设备反馈HARQ信息，在第二设备的位置信息丢失或失效时，第二设备可以基于信号质量信息向第一设备反馈第一数据的HARQ信息。
可选的，该第四配置信息可以通过基站指令(例如，系统信息块SIB或RRC信令)指示，也可以通过另一个做sidelink通信的终端设备指示(例如，通过RRC、MAC信令等指示)，本申请实施例对此并不进行限定。
S304、第二设备接收第一设备发送的第一数据。
示例性的，第二设备接收第一设备发送的第一数据的时刻，可以和第二设备接收第一设备发送的第一指示信息的时刻相同也可以不同，本申请实施例对此并不进行限定。
S305、第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息。
示例性的，第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息时可以包括多种情况。例如，第一设备确定指示第二设备基于距离信息反馈HARQ信息时，若第二设备获取到第二设备的位置，第二设备可以根据第一设备和第二设备之间的距离向第一设备反馈第一数据的HARQ信息；若第二设备获取不到第二设备的位置，第二设备可以根据第一设备发送的信号的信号质量(例如，第一数据对应的信号质量)向第一设备反馈第一数据的HARQ信息。再例如，第一设备确定指示第二设备基于距 离信息反馈HARQ信息和基于信号质量信息反馈HARQ信息时，若第二设备获取到第二设备的位置，第二设备可以根据第一设备和第二设备之间的距离向第一设备反馈第一数据的HARQ信息，或者，第二设备可以根据第一设备和第二设备之间的距离以及第一数据对应的信号质量向第一设备反馈第一数据的HARQ信息；若第二设备获取不到第二设备的位置，第二设备可以根据第一数据对应的信号质量向第一设备反馈第一数据的HARQ信息。本申请实施例对于第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息的具体场景并不进行限定，在此仅是示例性说明。可选的，第二设备可以根据接收到的第一数据对应的信号质量向第一设备反馈第一数据的HARQ信息，包括：第二设备检测来自第一设备发送的信号，然后将检测到的信号的信号质量与配置的信号质量门限进行比较，若大于或等于配置的信号质量的门限，则第二设备反馈HARQ信息，否则不反馈HARQ信息。
下面对第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息的具体方法进行详细说明。
一种实现方式中，当第一信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息时，上述第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息包括：第二设备根据第四信息，确定第一设备和第二设备之间的距离；根据第一设备和第二设备之间的距离反馈HARQ信息。该第四信息用于指示第一设备的位置和最小通信距离。可以理解的，本申请实施例对于第二设备根据第四信息确定第一设备和第二设备之间的距离的具体实施例方式并不进行限定，具体可以参考现有技术中的方法。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备向第一设备发送ACK反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备不发送反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备向第一设备发送ACK反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备向第一设备发送NACK反馈。
该实现方式可以应用于第一设备和第二设备的位置信息均未丢失的场景，或者，可以优先使用基于距离反馈的场景。例如，第一设备获取第一设备的位置后，指示第二设备基于距离信息向第一设备反馈第一数据的HARQ信息；第二设备获取第二设备的位置后，确定第一设备和第二设备之间的距离，并基于该距离以及最小通信距离，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
另一种实现方式中，当第一信息用于指示第二设备基于距离信息对第一数据反馈 HARQ信息时，上述第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息包括：获取第一数据对应的信号质量和第一数据对应的信号质量门限值；根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。可选的，当第二设备的位置信息丢失或失效时，第二设备可以根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。
示例性的，上述第一数据对应的信号质量门限值可以是网络设备配置给第二设备的信号质量门限值；也可以是第二设备根据第一设备的位置、信道的拥塞程度、业务负载情况等确定的第一数据对应的信号质量门限；还可以是第二设备根据第一设备发送的第一指示信息中的第七信息确定的第一数据对应的信号质量门限值，该第七信息用于指示第一数据的服务质量参数。可选的，该第七信息中指示的第一数据的服务质量参数可以为第一数据的优先级信息。
可选的，当第一设备在城市、高速公路、山区或郊区等不同位置时，和/或，当信道的拥塞程度不同时，和/或，当业务的密集程度不同时，第一数据对应的信号质量门限值可以不同。可选的，第二设备还可以接收基站发送的不同地理位置、信道拥塞程度、业务负载情况下对应的信号质量门限，并根据基站的配置以及第一设备的位置确定第一数据对应的信号质量门限值。
可选的，上述步骤S304之前还可以包括：第二设备获取第五配置信息，该第五配置信息包括一组或多组服务质量参数，以及与每组服务质量参数对应的一个或多个信号质量门限值；该一组或多组服务质量参数包括上述第一数据的服务质量参数，即第二设备可以根据该第五配置信息确定第一数据的服务质量参数对应的信号质量门限值。可以理解的，该第二设备获取第五配置信息的方式，以及第五配置信息的内容可以参考步骤S301中第一设备获取第二配置信息的方式，以及第二配置信息的内容的相关描述，在此不再赘述。需要说明的是，该第五配置信息可以和上述第二配置信息相同，也可以和上述第二配置信息不同，本申请实施例对此并不进行限定。
示例性的，上述第二设备根据第七信息，确定第一数据对应的信号质量门限值，包括：第二设备根据第一数据的服务质量参数，获取该第一数据的服务质量参数对应的第三信号质量门限值，该第三信号质量门限值为一个或多个信号质量门限值中的一个，该第三信号质量门限值为上述第一数据对应的信号质量门限值。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备不发送反馈；若第一 数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)，第二设备向第一设备发送NACK反馈。
该实现方式可以应用于第一设备的位置信息未丢失，而第二设备的位置信息丢失的场景，或者，可以优先使用信号质量的场景。例如，第一设备获取第一设备的位置后，指示第二设备基于距离信息向第一设备反馈第一数据的HARQ信息；由于第二设备获取不到第二设备的位置(第二设备的位置信息丢失)，第二设备基于第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
再一种实现方式中，当第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信息时，上述第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息包括：第二设备获取第一数据对应的信号质量；根据第一数据对应的信号质量以及第五信息向第一设备反馈第一数据的HARQ信息。该第五信息用于指示上述第一信号质量门限值或第二信号质量门限值。关于该第一信号质量门限值和第二信号质量门限值的相关描述可以参考前述实施例的内容。可选的，当第一设备的位置信息丢失或失效时，第一设备可以指示第二设备基于信号质量信息向第一设备反馈第一数据的HARQ信息。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二设备根据第一数据对应的信号质量以及第五信息，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第五信息指示的信号质量门限值(第一信号质量门限值或第二信号质量门限值)，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第五信息指示的信号质量门限值，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二设备根据第一数据对应的信号质量以及第五信息，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第五信息指示的信号质量门限值，第二设备不发送反馈；若第一数据对应的信号质量小于第五信息指示的信号质量门限值，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二设备根据第一数据对应的信号质量以及第五信息，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第五信息指示的信号质量门限值，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第五信息指示的信号质量门限值，第二设备向第一设备发送NACK反馈。
该实现方式可以应用于第一设备的位置信息丢失的场景，或者，基于信号质量反馈更优的场景。例如，第一设备获取不到第一设备的位置(第一设备的位置信息丢失)，第一设备指示第二设备基于信号质量向第一设备反馈第一数据的HARQ信息，并且第一设备向第二设备发送的第一指示信息中包含第一数据对应的信号质量门限值；第二设备基于第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
再一种实现方式中，当第一信息用于指示第二设备基于信号质量信息对第一数据反馈HARQ信息时，上述第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息包括：第二设备获取第一数据对应的信号质量；根据第六信息获取第一数据对应的信号质量门限值；根据第一数据对应的信号质量以及第一数据对应的信号质量门限值向第一设备反馈第一数据的HARQ信息。该第六信息用于指示第一设备发送第一数据时的功率参数。可选的，当第一设备的位置信息丢失或失效时，第一设备可以指示第二设备基于信号质量信息向第一设备反馈第一数据的HARQ信息。
在该实现方式中，上述步骤S304之前还可以包括：第二设备获取第六配置信息，该第六配置信息包括一个或多个功率参数，以及与每个功率参数对应的一个或多个信号质量门限值；该一个或多个功率参数包括第一设备发送第一数据时的功率参数，即第二设备可以根据该第六配置信息确定第一设备发送第一数据时的功率参数对应的信号质量门限值(第四信号质量门限值)。可以理解的，该第二设备获取第六配置信息的方式，以及第六配置信息的内容可以参考步骤S301中第一设备获取第三配置信息的方式，以及第三配置信息的内容的相关描述，在此不再赘述。需要说明的是，该第六配置信息可以和上述第三配置信息相同，也可以和上述第三配置信息不同，本申请实施例对此并不进行限定。
示例性的，上述第二设备根据第六信息，获取第一数据对应的信号质量门限值，包括：第二设备根据第一设备发送第一数据时的功率参数，获取该第一设备发送第一数据时的功率参数对应的第四信号质量门限值，该第四信号质量门限值为一个或多个信号质量门限值中的一个，该第四信号质量门限值为上述第一数据对应的信号质量门限值。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第四信号质量门限值，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第四信号质量门限值，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第四信号质量门限值，第二设备不发送反馈；若第一数据对应的信号质量小于第四信号质量门限值，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二根据第一数 据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第四信号质量门限值，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第四信号质量门限值，第二设备向第一设备发送NACK反馈。
该实现方式可以应用于第一设备的位置信息丢失的场景。例如，第一设备获取不到第一设备的位置(第一设备的位置信息丢失)，第一设备指示第二设备基于信号质量向第一设备反馈第一数据的HARQ信息，并且第一设备向第二设备发送的第一指示信息中包含第一设备发送第一数据的功率参数；第二设备基于第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
又一种实现方式中，若第一信息用于指示第二设备基于距离信息反馈HARQ信息和基于信号质量信息反馈HARQ信息，上述第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息，包括：第二设备根据第一设备以及第二设备之间的距离以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息。示例性的，第二设备可以根据第四信息确定第一设备以及第二设备之间的距离，该第四信息用于指示第一设备的位置和最小通信距离；第二设备可以获取第一数据对应的信号质量和信号质量门限值；根据第一设备以及第二设备之间的距离、第一数据对应的信号质量，以及信号质量门限值，向第一设备反馈第一数据的HARQ信息。可选的，当第一设备与第二设备之间的距离小于或等于最小通信距离时，第二设备反馈HARQ信息；或者，当第二设备获取到的第一数据对应的信号质量大于或等于信号质量门限值时，第二设备反馈HARQ信息；或者，当第一设备与第二设备之间的距离小于或等于最小通信距离以及第二设备获取到的第一数据对应的信号质量大于或等于信号质量门限值时，第二设备反馈HARQ信息。
示例性的，上述第一数据对应的信号质量门限值可以是网络设备配置给第二设备的信号质量门限值；也可以是第二设备根据第一设备的位置、信道的拥塞程度、业务负载情况等确定的第一数据对应的信号质量门限；还可以是第二设备根据第一设备发送的第一指示信息中的第七信息确定的第一数据对应的信号质量门限值，该第七信息用于指示第一数据的服务质量参数。可选的，该第七信息中指示的第一数据的服务质量参数可以为第一数据的优先级信息。
在该实现方式中，对于第二设备根据第一设备发送的第一指示信息中的第七信息确定的第一数据对应的信号质量门限值的具体实现方式可以参考前述实施例，在此不再赘述。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二设备根据第一设备以及第二设备之间的距离以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量大于或等于第三信号质量门限值(或网 络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二设备根据第一设备以及第二设备之间的距离以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备不发送反馈；若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二设备根据第一设备以及第二设备之间的距离以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息，包括：若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离小于最小通信距离，或者，若第一数据对应的信号质量大于或等于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备向第一设备发送ACK反馈；若第一数据对应的信号质量小于第三信号质量门限值(或网络设备配置的信号质量门限)且第一设备和第二设备之间的距离大于最小通信距离，第二设备向第一设备发送NACK反馈。
该实现方式可以应用于第一设备和第二设备的位置信息均未丢失的场景。例如，第一设备获取其位置信息后，指示第二设备基于信号质量和距离信息向第一设备反馈第一数据的HARQ信息；第二设备基于第一数据对应的信号质量以及第一设备和第二设备之间的距离，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
又一种实现方式中，若第一信息用于指示第二设备基于距离信息反馈HARQ信息和基于信号质量信息反馈HARQ信息，第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息，包括：第二设备获取第一数据对应的信号质量；第二设备确定第一数据对应的信号质量门限值；根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。可选的，当第二设备的位置信息丢失或失效时，第二设备根据第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。
示例性的，第二设备确定第一数据对应的信号质量门限值，可以包括：第二设备 根据第七信息，确定第一数据对应的信号质量门限值，该第七信息用于指示第一数据的服务质量参数。例如，第二设备可以根据第一数据的服务质量参数以及第五配置信息，确定第一数据的服务质量参数对应的第三信号质量门限值。相应的，第二设备可以根据该第三信号质量门限值以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息。可以理解的，第二设备可以根据该第三信号质量门限值以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息的具体实现方式，可以参考前述实施例，在此不再赘述。
示例性的，上述第二设备确定第一数据对应的信号质量门限值，还可以包括：第二设备获取基站发送的第五信号质量门限值。相应的，第二设备可以根据该第五信号质量门限值以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息。可以理解的，第二设备可以根据该第五信号质量门限值以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息的具体实现方式，可以参考前述实施例中第二设备可以根据该第三信号质量门限值以及第一数据对应的信号质量，向第一设备反馈第一数据的HARQ信息的实现方式，在此不再赘述。
该实现方式可以应用于第一设备的位置信息未丢失，而第二设备的位置信息丢失的场景。例如，第一设备获取其位置信息后，指示第二设备基于信号质量和距离信息向第一设备反馈第一数据的HARQ信息；第二设备获取不到第二设备的位置信息(第二设备的位置信息丢失)，第二设备基于第一数据对应的信号质量以及第一数据对应的信号质量门限值，向第一设备反馈第一数据的HARQ信息。本申请实施例对于该实现方式的应用场景并不进行限定，在此仅是示例性说明。
本申请实施例提供一种通信方法，该方法通过第一设备获取第一指示信息；第一设备向第二设备发送第一指示信息和第一数据；第二设备获取第一指示信息；第二设备接收第一设备发送的第一数据；第二设备根据第一指示信息向第一设备反馈第一数据的HARQ信息。本实施例通过第一设备获取第二设备向第一设备反馈第一数据的HARQ信息的方式，使得第一设备可以指示第二设备在多种反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
本申请实施例还提供一种通信方法，如图4所示，该方法可以包括步骤S401-S405。
S401、第一设备获取第二指示信息。
该第二指示信息包括第十信息，该第十信息用于指示所述第二设备基于距离信息对第一数据反馈HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。
示例性的，上述距离信息可以为第一设备和第二设备之间的距离。可选的，第十信息可以用于指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。
一种实现方式中，上述第一设备获取第二指示信息可以包括：第一设备获取第七配置信息，该第七配置信息用于指示上述第二指示信息。该第七配置信息可以为基站发送的配置信息。可以理解的，在该实现方式中，基站可以配置第二设备的反馈方式，并向第一设备发送该配置。第一设备可以根据基站的配置确定具体的反馈方式。可选的，该第七配置信息可以为第三设备通过信令指示给第一设备的，该第三设备可以为进行侧行通信的设备。可选的，该第七配置信息可以是预配置的。
示例性的，该第七配置信息可以通过基站指令指示，也可以通过另一个做sidelink通信的终端设备指示，本申请实施例对此并不进行限定。可选的，当该第七配置信息可以携带在第三设备发送的消息中时，可以通过UE的侧行链路的RRC信令来指示。
另一种实现方式中，上述第一设备获取第二指示信息可以包括：第一设备获取信道质量信息，第一设备根据信道质量信息确定第二指示信息。
示例性的，第一设备可以通过信道的拥塞程度，确定第二指示信息。例如，可以在信道较拥塞时，确定第十信息用于指示第二设备不对第一数据反馈HARQ信息；也可以在信道不拥塞时，确定第十信息用于指示第二设备基于第一设备和第二设备之间的距离反馈HARQ信息。本申请实施例对于第一设备根据信道质量信息确定第二指示信息的具体规则并不进行限定，在此仅是示例性说明。
再一种实现方式中，上述第一设备获取第二指示信息可以包括：第一设备获取第一设备的位置，若第一设备获取不到第一设备的位置，第一设备确定第二指示信息用于指示第二设备不对第一数据反馈HARQ信息。若第一设备获取到了第一设备的位置，第一设备确定第二指示信息用于指示第二设备基于第一设备和第二设备之间的距离对第一数据反馈HARQ信息。
示例性的，上述第一设备的位置可以为第一设备的地理位置，该第一设备的地理位置可以是指基于卫星获得的位置坐标，例如全球定位系统坐标，也可以是北斗位置坐标等。第一设备的位置还可以是基于其他的定位体制或定位技术获得的位置信息，例如基于惯性导航获得的位置信息，基于雷达获得的位置信息，基于网络设备与UE之间的定位信号获得的位置信息等，本申请实施例对此并不进行限定。可以理解的，第一设备获取不到自己的位置的原因可以包括当前第一设备的位置未被网络覆盖，或者网络信号较差等，本申请实施例对此并不进行限定。
需要说明的是，本申请实施例对于第一设备获取第二指示信息的具体方式并不进行限定，在此仅是示例性的说明。例如，第一设备还可以根据反馈资源是否充足，获取第二指示信息。
示例性的，反馈HARQ信息的方式包括：发送肯定应答(Acknowledgement，ACK)不发送否定应答(Negative Acknowledgement，NACK)，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。即反馈HARQ信息包括仅发送ACK，或者，仅发送NACK，或者，发送ACK或NACK。
可选的，上述反馈HARQ信息的方式可以是网络设备(例如，基站设备)配置的。网络设备可以通过信令指示反馈HARQ的具体方式。第一设备和/或第二设备可以根据基站配置的反馈HARQ的具体方式进行反馈。
可以理解的，本申请实施例中第一设备可以确定第二设备的反馈方式，并向第二设备发送指示第二设备反馈方式的指示信息，从而使得第一设备可以指示第二设备进行反馈方式的切换，能够适用于更多场景，提高发射机和接收机之间通信的可靠性。
S402、第一设备向第二设备发送第二指示信息和第一数据。
示例性的，第一设备可以通过组播、单播或广播方式发送第二指示信息和第一数据。例如，第一设备可以向一个第二设备(单播场景)发送第二指示信息和第一数据，第一设备也可以向多个第二设备(组播场景)发送第二指示信息和第一数据，第一设 备还可以向不限数量的第二设备(广播场景)发送第二指示信息和第一数据。可选地，当第一设备是向多个第二设备发送第二指示信息和第一数据时，第二设备可以是第一设备明确的接收机，也可以是第一设备未知或不明确的接收机，本申请实施例对此不做限定。
示例性的，上述第一设备发送第二指示信息和第一数据时，该第二指示信息和第一数据可以是同时发送的，也可以是不同时发送的，本申请实施例对此并不进行限定。可选的，该第一数据可以是在第一设备发送第二指示信息的时隙中发送的。可选的，该第一数据可以是在第一设备发送第二指示信息的时隙之前或之后发送的。可选的第二指示信息可以是用来指示第一数据传输参数的信息。可选的，可以一个或多个第一数据共用一个第二指示信息。
可选地，第一设备发送第二指示信息时，该第二指示信息可以携带在SCI中。示例性的，第一设备可以在发送第一数据时的时隙中发送SCI。
可选的，在SCI中，可以使用2、3或4个比特的字段指示第十信息，本申请实施例对于第十信息的具体比特数并不进行限定。
可选的，SCI中可以包括第一字段，该第一字段的不同取值用于指示第二设备基于距离信息对第一数据反馈HARQ信息，或者，指示第二设备不对第一数据反馈HARQ信息。例如，以SCI中的第一字段为1比特为例，该第一字段的值为0时，第十信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息；该第一字段的值为1时，第十信息用于指示第二设备不对第一数据反馈HARQ信息。本申请实施例对于第一字段占用SCI的比特数并不进行限定，在此仅是示例性说明。
示例性的，上述第二指示信息还可以包括：第十一信息，该第十一信息用于指示第一数据的传输次数、第一数据的多次传输间的时域关系指示信息、第一数据的多次传输间的频域关系指示信息中的一种或多种。可选的，例如，第一数据在做无HARQ反馈的传输时，第一数据的传输次数N可以为1，2，4，8中的一种或多种。可选地，第十一信息可以指示第一数据的传输次数N。可选地，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的时域间隔的指示信息可以通过第十一信息指示。可选的，对于第一数据的N次传输，相邻的两个或多个第一数据的传输之间的频域资源的间隔的指示信息可以通过第十一信息指示。可选地，当第一数据在N次传输使用时域跳频和/或频域跳频的方式来传输时，上述第十一信息还用来指示跳频的参数。
示例性的，可以通过SCI指示该第十一信息，或者，通过SCI携带第十一信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第十一信息。可选的，第十一信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
示例性的，上述第二指示信息还可以包括：第十二信息，该第十二信息用于指示第一设备的位置。例如，第十二信息可以指示第一设备所在的第一区域的标识，或者，指示第一设备的位置坐标(如GPS坐标)等，本申请实施例对于该第一设备的位置的具体形式并不进行限定，在此仅是示例性说明。
可选的，该第十二信息还用于指示第一数据的最小通信距离。该最小通信距离也可称为要求的最小通信距离或最小要求的通信距离，是指为了达到一定的传输时延、 可靠性、速率时要求的最小距离。可选地，当发射机和接收机(可称为收发机)之间的距离小于或等于最小通信距离时，收发机之间的通信需要满足传输时延、可靠性、速率等方面的要求；当收发机间的距离大于或等于这个要求的最小距离时，收发机之间的通信不需要一定满足传输时延、可靠性、速率等方面的要求。
示例性的，可以通过SCI指示该第十二信息，或者，通过SCI携带第十二信息的部分或全部比特，或者，通过MAC、RRC或预配置的信令指示第十二信息。可选的，第十二信息的一部分比特位可以通过SCI携带，另一部分比特位可以使用MAC、RRC或预配置的信令携带。
可选的，上述第十二信息同时用于指示第一设备的位置和第一数据的最小通信距离时，可以使用一个联合的字段，也可以使用两个或多个不同的字段来指示，本申请实施例对此并不进行限定。
可选的，上述第二指示信息还可以包括第二字段，该第二字段的不同取值用于指示第十一信息或第十二信息。例如，在SCI中，该第二字段为4比特，当该第二字段的值为0-10(对应二进制0000～1010)时，表示该第二字段指示的是第十一信息，当该第二字段的值为11-15(对应二进制1011～1111)时，表示该第二字段指示的是第十二信息。可以理解的，该第十一信息和第十二信息可以复用SCI中的第二字段，在第二字段的取值不同时，该第二字段指示的信息是不同的。
可选的，上述第二指示信息还可以包括第十三信息，该第十三信息用于指示SCI中的第三字段指示的信息为第十一信息或第十二信息。例如，在SCI中，第十三信息占用1个比特，该第三字段为4比特，当第十三信息的值为0时，该第三字段指示的是上述第十一信息；当第十三信息的值为1时，该第三字段指示的是上述第十二信息。可以理解的，与上一实现方式不同的是，本实现方式中，可以通过一个单独字段指示第三字段指示的信息。
上述第十三信息可以携带在SCI中。可选的，该第十三信息可以为上述第十信息，也可以上述第十信息不同。
可以理解的，若第十三信息为上述第十信息。当第十信息用于指示第二设备基于距离信息对第一数据反馈HARQ信息时，第三字段指示第十二信息；当第十信息用于指示第二设备不对第一数据反馈HARQ信息时，第三字段指示第十一信息。
S403、第二设备获取第二指示信息。
示例性的，第二设备获取第二指示信息，可以包括：第二设备接收第一设备发送的第二指示信息。
可选的，第二设备还可以接收网络设备(例如，基站设备)发送的第八配置信息，并根据网络设备发送的第八配置信息和第一设备发送的第二指示信息确定第二设备的反馈方式。该第八配置信息可以指示第二设备向第一设备反馈第一数据的HARQ信息，或不向第一设备反馈第一数据的HARQ信息。
可选的，该第八配置信息可以通过基站指令(例如，系统信息块SIB或RRC信令)指示，也可以通过另一个做sidelink通信的终端设备指示(例如，通过RRC、MAC信令等指示)，本申请实施例对此并不进行限定。
S404、第二设备接收第一设备发送的第一数据。
示例性的，第二设备接收第一设备发送的第一数据的时刻，可以和第二设备接收第一设备发送的第二指示信息的时刻相同也可以不同，本申请实施例对此并不进行限定。
S405、第二设备根据第二指示信息，向第一设备反馈第一数据的HARQ信息，或者，不向第一设备反馈所述第一数据的HARQ信息。
一种实现方式中，若第十信息指示第二设备基于距离信息对第一数据反馈HARQ信息，第二设备根据第二指示信息，向第一设备反馈第一数据的HARQ信息，可以包括：第二设备根据第十二信息，确定第一设备和第二设备之间的距离；根据第一设备和第二设备之间的距离反馈HARQ信息。该第十二信息用于指示第一设备的位置和最小通信距离。可以理解的，本申请实施例对于第二设备根据第十二信息确定第一设备和第二设备之间的距离的具体实施例方式并不进行限定，具体可以参考现有技术中的方法。
示例性的，当反馈HARQ信息包括发送ACK不发送NACK(仅发送ACK)时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备向第一设备发送ACK反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备不发送反馈。
示例性的，当反馈HARQ信息包括不发送ACK发送NACK(仅发送NACK)时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备不发送反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备向第一设备发送NACK反馈。
示例性的，当反馈HARQ信息包括发送ACK或NACK时，上述第二根据第一设备和第二设备之间的距离反馈HARQ信息，包括：若第一设备和第二设备之间的距离小于最小通信距离，第二设备向第一设备发送ACK反馈；若第一设备和第二设备之间的距离大于或等于最小通信距离，第二设备向第一设备发送NACK反馈。
另一种实现方式中，若第十信息指示第二设备不对第一数据反馈HARQ信息，第二设备不向第一设备反馈第一数据的HARQ信息。在该实现方式中，第一设备可以重复多次向第二设备传输第一数据。
本申请实施例提供一种通信方法，该方法通过第一设备获取第二指示信息；第一设备向第二设备发送第二指示信息和第一数据；第二设备获取第二指示信息；第二设备接收第一设备发送的第一数据；第二设备根据第二指示信息向第一设备反馈第一数据的HARQ信息。本实施例通过第一设备获取第二设备向第一设备反馈第一数据的HARQ信息的方式，使得第一设备可以指示第二设备在不同的反馈方式之间进行切换，该方法能够适用于更多场景，提高了发射机和接收机之间通信的可靠性。
本申请实施例还提供一种终端设备，该终端设备可以是内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元中的一个或多个部件或者单元，车辆可以通过内置在车载模块、车载模组、车载部件、车载芯片或者车载单元中的终端设备实施上述实施例中的通信方法。
上述主要从方法步骤的角度对本申请实施例提供的方案进行了介绍。可以理解的是，通信设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模 块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的模块及算法步骤，本申请能够以硬件和计算机软件的结合形式来实现。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对通信设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图5示出了上述实施例中所涉及的第一设备的一种可能的结构示意图，该第一设备500包括：处理单元501、通信单元502。处理单元501可以通过通信单元502执行图3中的S301-S302，或图4中的S401-S402。可以理解的，通信单元502可以用于收发信息，或者用于与其他网元通信，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用对应各个功能划分各个功能模块的情况下，图6示出了上述实施例中所涉及的第二设备的一种可能的结构示意图，该第二设备600包括：处理单元601、通信单元602。处理单元601可以执行图3中的S303-S305、或图4中的S403-S405。可以理解的，通信单元602可以用于收发信息，或者用于与其他网元通信，和/或用于本文所描述的技术的其它过程。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用集成的单元的情况下，图7示出了上述实施例中所涉及的第一设备700的一种可能的结构示意图。该第一设备700包括：处理器701和收发器702，该处理器701用于对第一设备700的动作进行控制管理，例如，处理器701可以通过收发器702执行图3中的S301-S302，或图4中的S401-S402，和/或用于本文所描述的技术的其它过程。该收发器702收发信息，或者用于与其他网元通信，和/或用于本文所描述的技术的其它过程。可选的，上述第一设备700还可以包括存储器703，该存储器703用于存储第一设备700执行上文所提供的任一通信方法所对应的程序代码和数据。该存储器703可以为只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。该第一设备700可以为图2所示的通信设备，上述图2涉及的各部件的所有相关内容的描述均可以援引到图7对应部件的功能描述，在此不再赘述。
在采用集成的单元的情况下，图8示出了上述实施例中所涉及的第二设备800的一种可能的结构示意图。该第二设备800包括：处理器801和收发器802，该处理器801用于对第二设备800的动作进行控制管理，例如，处理器801可以执行图3中的S303-S305、或图4中的S403-S405，和/或用于本文所描述的技术的其它过程。该收发器802用于收发信息，或者用于与其他网元通信，和/或用于本文所描述的技术的其它过程。可选的，上述第二设备800还可以包括存储器803，该存储器803用于存储第二设备800执行上文所提供的任一通信方法所对应的程序代码和数据。该存储器803 可以为只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。该第二设备800可以为图2所示的通信设备，上述图2涉及的各部件的所有相关内容的描述均可以援引到图8对应部件的功能描述，在此不再赘述。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、电可擦可编程只读存储器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于核心网接口设备中。当然，处理器和存储介质也可以作为分立组件存在于核心网接口设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (40)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一设备获取第一指示信息；
    所述第一设备向第二设备发送所述第一指示信息和第一数据，所述第一指示信息包括第一信息，所述第一信息用于指示所述第二设备基于距离信息对所述第一数据反馈混合自动重传请求HARQ信息，和/或，指示所述第二设备基于信号质量信息对所述第一数据反馈HARQ信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息包括第一字段，所述第一字段的不同取值用于指示所述第二设备基于距离信息对所述第一数据反馈HARQ信息，和/或，指示所述第二设备基于信号质量信息对所述第一数据反馈HARQ信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息还用于指示所述第二设备不对所述第一数据反馈HARQ信息。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述第一指示信息还包括第二信息，所述第二信息用于指示所述第一信息生效。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述信号质量包括：参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI，以及信号与干扰加噪声比SINR中的任意一种或多种。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备获取第一配置信息，所述第一配置信息用于指示所述第一指示信息；或者，
    所述第一设备获取信道质量信息，所述第一设备根据所述信道质量信息获取所述第一指示信息。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述反馈HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。
  8. 根据权利要求1-7中任一项所述的方法，其特征在于，所述第一指示信息还包括第三信息，所述第三信息用于指示所述第一数据的传输次数、所述第一数据的多次传输间的时域关系指示信息、所述第一数据的多次传输间的频域关系指示信息中的一种或多种。
  9. 根据权利要求1-8中任一项所述的方法，其特征在于，所述第一指示信息还包括第四信息，所述第四信息用于指示所述第一设备的位置。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述第一指示信息还包括第五信息，所述第五信息用于指示所述第一数据对应的信号质量门限值。
  11. 一种通信方法，其特征在于，所述方法包括：
    第二设备获取第一指示信息，所述第一指示信息包括第一信息，所述第一信息用于指示所述第二设备基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示所述第二设备基于信号质量信息对所述第一数据反馈HARQ信息；
    所述第二设备接收第一设备发送的所述第一数据；
    所述第二设备根据所述第一指示信息向所述第一设备反馈所述第一数据的HARQ信息。
  12. 根据权利要求11所述的方法，其特征在于，所述第一信息还用于指示所述第二设备不向所述第一设备反馈所述第一数据的HARQ信息。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第一指示信息还包括第二信息，所述第二信息用于指示所述第一信息生效。
  14. 根据权利要求11-13中任一项所述的方法，其特征在于，所述信号质量包括：参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI，以及信号与干扰加噪声比SINR中的任意一种或多种。
  15. 根据权利要求11-14中任一项所述的方法，其特征在于，所述反馈所述第一数据的HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。
  16. 根据权利要求11-15中任一项所述的方法，其特征在于，所述第一指示信息还包括第三信息，所述第三信息用于指示所述第一数据的传输次数、所述第一数据的多次传输间的时域关系指示信息、所述第一数据的多次传输间的频域关系指示信息中的一种或多种。
  17. 根据权利要求11-16中任一项所述的方法，其特征在于，所述第一指示信息还包括第四信息，所述第四信息用于指示所述第一设备的位置信息。
  18. 根据权利要求11-17中任一项所述的方法，其特征在于，所述第一指示信息还包括第五信息，所述第五信息用于指示所述第一数据对应的信号质量门限值。
  19. 根据权利要求11-18中任一项所述的方法，其特征在于，所述第一指示信息还包括第六信息，所述第六信息用于指示所述第一设备发送所述第一数据时的功率参数；所述功率参数包括：发射功率变化值、发射功率值，或发射功率。
  20. 一种通信装置，其特征在于，所述装置包括：处理单元和通信单元；
    所述处理单元，用于通过所述通信单元获取第一指示信息；
    所述处理单元，还用于通过所述通信单元向第二设备发送所述第一指示信息和第一数据，所述第一指示信息包括第一信息，所述第一信息用于指示所述第二设备基于距离信息对所述第一数据反馈混合自动重传请求HARQ信息，和/或，指示所述第二设备基于信号质量信息对所述第一数据反馈HARQ信息。
  21. 根据权利要求20所述的装置，其特征在于，所述第一指示信息包括第一字段，所述第一字段的不同取值用于指示所述第二设备基于距离信息对所述第一数据反馈HARQ信息，和/或，指示所述第二设备基于信号质量信息对所述第一数据反馈HARQ信息。
  22. 根据权利要求20或21所述的装置，其特征在于，所述第一信息还用于指示所述第二设备不对所述第一数据反馈HARQ信息。
  23. 根据权利要求20-22中任一项所述的装置，其特征在于，所述第一指示信息还包括第二信息，所述第二信息用于指示所述第一信息生效。
  24. 根据权利要求20-23中任一项所述的装置，其特征在于，所述信号质量包括：参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI，以及 信号与干扰加噪声比SINR中的任意一种或多种。
  25. 根据权利要求20-24中任一项所述的装置，其特征在于，所述处理单元，还用于：
    通过所述通信单元获取第一配置信息，所述第一配置信息用于指示所述第一指示信息；或者，
    通过所述通信单元获取信道质量信息，根据所述信道质量信息获取所述第一指示信息。
  26. 根据权利要求20-25中任一项所述的装置，其特征在于，所述反馈HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。
  27. 根据权利要求20-26中任一项所述的装置，其特征在于，所述第一指示信息还包括第三信息，所述第三信息用于指示所述第一数据的传输次数、所述第一数据的多次传输间的时域关系指示信息、所述第一数据的多次传输间的频域关系指示信息中的一种或多种。
  28. 根据权利要求20-27中任一项所述的装置，其特征在于，所述第一指示信息还包括第四信息，所述第四信息用于指示所述通信装置的位置。
  29. 根据权利要求20-28中任一项所述的装置，其特征在于，所述第一指示信息还包括第五信息，所述第五信息用于指示所述第一数据对应的信号质量门限值。
  30. 一种通信装置，其特征在于，所述装置包括：处理单元和通信单元；
    所述处理单元，用于通过所述通信单元获取第一指示信息，所述第一指示信息包括第一信息，所述第一信息用于指示所述通信装置基于距离信息对第一数据反馈混合自动重传请求HARQ信息，和/或，指示所述通信装置基于信号质量信息对所述第一数据反馈HARQ信息；
    所述处理单元，还用于通过所述通信单元接收第一设备发送的所述第一数据；根据所述第一指示信息向所述第一设备反馈所述第一数据的HARQ信息。
  31. 根据权利要求30所述的装置，其特征在于，所述第一信息还用于指示所述通信装置不向所述第一设备反馈所述第一数据的HARQ信息。
  32. 根据权利要求30或31所述的装置，其特征在于，所述第一指示信息还包括第二信息，所述第二信息用于指示所述第一信息生效。
  33. 根据权利要求30-32中任一项所述的装置，其特征在于，所述信号质量包括：参考信号接收功率RSRP、参考信号接收质量RSRQ、接收信号强度指示RSSI，以及信号与干扰加噪声比SINR中的任意一种或多种。
  34. 根据权利要求30-33中任一项所述的装置，其特征在于，所述反馈所述第一数据的HARQ信息包括：发送肯定应答ACK不发送否定应答NACK，或者，发送否定应答NACK不发送ACK，或者，发送ACK或NACK。
  35. 根据权利要求30-34中任一项所述的装置，其特征在于，所述第一指示信息还包括第三信息，所述第三信息用于指示所述第一数据的传输次数、所述第一数据的多次传输间的时域关系指示信息、所述第一数据的多次传输间的频域关系指示信息中的一种或多种。
  36. 根据权利要求30-35中任一项所述的装置，其特征在于，所述第一指示信息还包括第四信息，所述第四信息用于指示所述第一设备的位置信息。
  37. 根据权利要求30-36中任一项所述的装置，其特征在于，所述第一指示信息还包括第五信息，所述第五信息用于指示所述第一数据对应的信号质量门限值。
  38. 根据权利要求30-37中任一项所述的装置，其特征在于，所述第一指示信息还包括第六信息，所述第六信息用于指示所述第一设备发送所述第一数据时的功率参数；所述功率参数包括：发射功率变化值、发射功率值，或发射功率。
  39. 一种计算机存储介质，所述计算机存储介质中存储有计算机程序代码，其特征在于，当所述计算机程序代码在处理器上运行时，使得所述处理器执行如权利要求1-19任一项所述的通信方法。
  40. 一种通信装置，其特征在于，所述通信装置包括：
    收发器，用于收发信息，或者用于与其他网元通信；
    处理器，用于执行计算机程序指令，以实现如权利要求1-19任一项所述的通信方法。
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