WO2020164531A9 - Procédé et appareil de traitement de données, et terminal - Google Patents

Procédé et appareil de traitement de données, et terminal Download PDF

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Publication number
WO2020164531A9
WO2020164531A9 PCT/CN2020/075019 CN2020075019W WO2020164531A9 WO 2020164531 A9 WO2020164531 A9 WO 2020164531A9 CN 2020075019 W CN2020075019 W CN 2020075019W WO 2020164531 A9 WO2020164531 A9 WO 2020164531A9
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WIPO (PCT)
Prior art keywords
data
feedback
priority
terminal device
time
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PCT/CN2020/075019
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English (en)
Chinese (zh)
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WO2020164531A1 (fr
Inventor
李晓翠
薛祎凡
曾勇波
王键
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华为技术有限公司
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Publication of WO2020164531A9 publication Critical patent/WO2020164531A9/fr

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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
    • H04L1/1812—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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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

  • V2X communication includes: vehicle to vehicle communication (Vehicle to Vehicle, V2V), vehicle to roadside infrastructure communication (Vehicle to Infrastructure, V2I), and vehicle to pedestrian communication (Vehicle to People, V2P).
  • V2V vehicle to vehicle communication
  • V2I vehicle to roadside infrastructure communication
  • V2P vehicle to pedestrian communication
  • the terminal has two communication interfaces: Uu interface and PC5 interface.
  • the Uu interface is used for communication between the terminal and network equipment
  • the PC5 interface is used for the sidelink between the terminal and the terminal (Sidelink) Communication
  • Sidelink communication adopts a device-to-device (D2D) communication mode.
  • D2D means that data is not forwarded by network equipment, but is directly transmitted between terminals, that is, the terminal as the sending end directly sends the data to the terminal as the receiving end through the PC5 interface.
  • the resources required for the terminal to feed back HARQ information are mainly allocated by the base station for terminal scheduling.
  • the base station cannot allocate resources for the terminal. Therefore, it is necessary to standardize the manner in which the terminal independently determines the HARQ feedback resource.
  • the embodiments of the present application provide a data processing method, device, and terminal to provide an implementation manner in which the terminal autonomously determines HARQ feedback resources.
  • an embodiment of the present application provides a data processing method, including: a first terminal device receives first data and second data from at least one second terminal device, and the feedback priority of the first data is higher than that of the The feedback priority of the second data; the first terminal device sends the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data to the at least one second terminal device, the The feedback time of the first HARQ feedback information is earlier than the feedback time of the second HARQ feedback information.
  • the method further includes: the first terminal device further The at least one second terminal device receives fourth data, the feedback priority of the fourth data is the same as the feedback priority of the second data, and the receiving time of the fourth data is later than the receiving time of the second data Time; the first terminal device also sends fourth HARQ feedback information corresponding to the fourth data to the at least one second terminal device, and the feedback time of the fourth HARQ feedback information is later than the second HARQ feedback Information feedback moment.
  • the method further includes: the first terminal device further The at least one second terminal device receives fourth data, and the feedback priority of the fourth data is the same as the feedback priority of the second data; the first terminal device also sends to the at least one second terminal device The fourth HARQ feedback information corresponding to the fourth data, and the fourth HARQ feedback information and the second HARQ feedback information are sent in the same time-frequency resource.
  • the first terminal device sends a message to the at least one first
  • the second terminal device sending the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data includes: the first terminal device repeatedly sends the first HARQ feedback information to the at least one second terminal device.
  • One HARQ feedback information and the second HARQ feedback information, the repeated transmission manner is one of the following: frequency division retransmission, time division retransmission, and no retransmission.
  • the repeated transmission of the first HARQ feedback information is frequency division retransmission or time division retransmission, so The repeated transmission of the second HARQ feedback information is non-retransmission.
  • the manner of repeated transmission of the first HARQ feedback information is frequency division retransmission, and the second HARQ The repeated transmission of feedback information is time division retransmission.
  • an embodiment of the present application provides a data processing method, including: a first terminal device receives at least one piece of data from at least one second terminal device; the first terminal device determines according to the feedback priority of each of the data The time-frequency resource of the HARQ feedback information corresponding to each of the data; wherein the feedback priority of the data includes: the feedback priority corresponding to the type of the data, and/or the feedback priority corresponding to the second terminal device that sends the data; The first terminal device sends HARQ feedback information corresponding to each of the data to the at least one second terminal device in the time-frequency resource.
  • the first terminal device if the data received by the first terminal device includes data of a first feedback priority and data of a second feedback priority, the first If the feedback priority is higher than the second feedback priority, the feedback time of HARQ feedback information corresponding to the data of the first feedback priority is earlier than the feedback time of HARQ feedback information corresponding to the data of the second feedback priority .
  • the data received by the first terminal device within the preset time window includes the first The data of the feedback priority and the data of the second feedback priority, the first feedback priority is higher than the second feedback priority, then the feedback time of the HARQ feedback information corresponding to the data of the first feedback priority is n+T+j, the feedback time of HARQ feedback information corresponding to the data of the second feedback priority is n+T+m, m>j; where n is the start time of the preset time window, and T Is the length of the preset time window, and j and m are the time interval between the feedback moment and the end moment of the preset time window.
  • the method further includes: the first terminal device According to the feedback priority of each data, the retransmission mode of the HARQ feedback information corresponding to each data is determined, and the retransmission mode is one of the following: frequency division retransmission, time division retransmission, and no retransmission .
  • the HARQ feedback information corresponding to the first feedback priority data is retransmitted by frequency division retransmission.
  • the retransmission mode of HARQ feedback information corresponding to the feedback priority data is time division retransmission.
  • the HARQ feedback information corresponding to the first feedback priority data is retransmitted by frequency division retransmission or time division retransmission.
  • the retransmission mode of the HARQ feedback information corresponding to the data of the second feedback priority is non-retransmission.
  • the receiving module is further configured to receive data from the at least one second terminal device Receiving fourth data, the feedback priority of the fourth data is the same as the feedback priority of the second data; the sending module is further configured to send the fourth data corresponding to the at least one second terminal device
  • the fourth HARQ feedback information of the, the fourth HARQ feedback information and the second HARQ feedback information are sent in the same time-frequency resource.
  • the sending module is specifically configured to send a message to the at least one first
  • the second terminal device repeatedly transmits the first HARQ feedback information and the second HARQ feedback information, and the repeated transmission manner is one of the following: frequency division retransmission, time division retransmission, and non-retransmission.
  • the repeated transmission of the first HARQ feedback information is frequency division retransmission or time division retransmission. 2.
  • the repeated transmission of HARQ feedback information is non-retransmission.
  • the data received by the first terminal device within the preset time window includes the first The data of the feedback priority and the data of the second feedback priority, the first feedback priority is higher than the second feedback priority, then the feedback time of the HARQ feedback information corresponding to the data of the first feedback priority is n+T+j, the feedback time of HARQ feedback information corresponding to the data of the second feedback priority is n+T+m, m>j; where n is the start time of the preset time window, and T Is the length of the preset time window, and j and m are the time interval between the feedback moment and the end moment of the preset time window.
  • the HARQ feedback information corresponding to the first feedback priority data The time is the closest possible feedback time from the receiving time of the data of the first feedback priority; the feedback time of HARQ feedback information corresponding to the data of the second feedback priority received within the preset time window is all n+T+k, where n is the start time of the preset time window, T is the length of the preset time window, and k is the feedback of HARQ feedback information corresponding to the data of the second feedback priority
  • the communication interface is further configured to receive third data from the at least one second terminal device, and feedback of the third data is prioritized
  • the feedback priority of the first data is the same as the feedback priority of the first data, and the receiving time of the third data is later than the receiving time of the first data
  • the processor is further configured to control the communication interface to the at least one
  • the second terminal device sends third HARQ feedback information corresponding to the third data, and the feedback time of the third HARQ feedback information is earlier than the feedback time of the second HARQ feedback information and later than the first HARQ feedback Information feedback moment.
  • the communication interface is further configured to receive third data from the at least one second terminal device, and the feedback priority of the third data is The feedback priority of the first data is the same; the processor is further configured to control the communication interface to send third HARQ feedback information corresponding to the third data to the at least one second terminal device, the The third HARQ feedback information and the first HARQ feedback information are sent in the same time-frequency resource.
  • the communication interface is further used for the communication from the at least one second terminal device Receiving fourth data, the feedback priority of the fourth data is the same as the feedback priority of the second data, and the receiving time of the fourth data is later than the receiving time of the second data; the processor, It is also used to control the communication interface to send fourth HARQ feedback information corresponding to the fourth data to the at least one second terminal device, where the feedback time of the fourth HARQ feedback information is later than the second HARQ feedback information Moment of feedback.
  • the communication interface is further used for the communication from the at least one second terminal device Receiving fourth data, the feedback priority of the fourth data is the same as the feedback priority of the second data; the processor is further configured to control the communication interface to send all the data to the at least one second terminal device
  • the fourth HARQ feedback information corresponding to the fourth data, the fourth HARQ feedback information and the second HARQ feedback information are sent in the same time-frequency resource.
  • the processor is specifically configured to control the communication interface to the The at least one second terminal device repeatedly transmits the first HARQ feedback information and the second HARQ feedback information, and the repeated transmission manner is one of the following: frequency division retransmission, time division retransmission, and non-retransmission .
  • an embodiment of the present application provides a terminal device, including: a processor and a communication interface; the communication interface is used for a first terminal device to receive at least one piece of data from at least one second terminal device; the processor, It is used to determine the time-frequency resource of the HARQ feedback information corresponding to each of the data according to the feedback priority of each of the data; wherein the feedback priority of the data includes: the feedback priority corresponding to the type of the data, and/or, send The feedback priority corresponding to the second terminal device of the data; the processor is further configured to control the communication interface to send the HARQ feedback corresponding to each of the data to the at least one second terminal device in the time-frequency resource information.
  • the data received by the first terminal device within the preset time window includes the first The data of the feedback priority and the data of the second feedback priority, the first feedback priority is higher than the second feedback priority, then the feedback time of the HARQ feedback information corresponding to the data of the first feedback priority is n+T+j, the feedback time of HARQ feedback information corresponding to the data of the second feedback priority is n+T+m, m>j; where n is the start time of the preset time window, and T Is the length of the preset time window, and j and m are the time interval between the feedback moment and the end moment of the preset time window.
  • the processor is further configured to perform according to each of the data
  • the retransmission mode is one of the following: frequency division retransmission, time division retransmission, and non-retransmission.
  • the HARQ feedback information corresponding to the first feedback priority data is retransmitted by frequency division retransmission.
  • the retransmission mode of HARQ feedback information corresponding to the feedback priority data is time division retransmission.
  • the HARQ feedback information corresponding to the first feedback priority data is retransmitted by frequency division retransmission or time division retransmission.
  • the retransmission mode of the HARQ feedback information corresponding to the data of the second feedback priority is non-retransmission.
  • an embodiment of the present application provides a storage medium, the storage medium includes a computer program, and the computer program is used to implement the above first aspect and various possible implementation manners of the first aspect or the second aspect and the second aspect. In terms of various possible implementations, the data processing method described.
  • a first terminal device receives first data and second data from at least one second terminal device, and the feedback priority of the first data is higher than that of the second data
  • the first terminal device sends the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data to the at least one second terminal device, and the first HARQ
  • the feedback time of the feedback information is earlier than the feedback time of the second HARQ feedback information; it can be seen that this embodiment realizes the way that the receiving end independently determines the HARQ feedback resource, and further, it also guarantees the data with high feedback priority.
  • Data with low feedback priority is fed back.
  • Data with high feedback priority is usually important data related to safe driving in V2X scenarios. Priority feedback on data with high feedback priority can ensure the effective transmission of important data, thereby ensuring Improve the safety of the vehicle.
  • Figure 1A is a schematic diagram of a network architecture applicable to this application.
  • FIG. 3B is a schematic diagram of HARQ feedback using a delay unified feedback method provided by this application.
  • FIG. 5A is a schematic diagram of HARQ feedback processing on data provided by an embodiment of this application.
  • FIG. 5B is a schematic diagram of HARQ feedback processing on data provided by an embodiment of this application.
  • 5C is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 5D is a schematic diagram of performing HARQ feedback processing on data according to an embodiment of the application.
  • FIG. 6A is a schematic diagram of HARQ feedback processing on data provided by an embodiment of this application.
  • 6B is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • 6C is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 7A is a schematic diagram of HARQ feedback processing on data provided by an embodiment of this application.
  • FIG. 7B is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 7C is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 8B is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 9A is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 9B is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 9C is a schematic diagram of HARQ feedback processing on data provided by an embodiment of the application.
  • FIG. 10 is a schematic structural diagram of a data processing device provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the application.
  • the base station can be a base station (Base Transceiver Station, BTS) in Global System of Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or it can be a Broadband Code Division Multiple Access (BTS).
  • BTS Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • BTS Broadband Code Division Multiple Access
  • the base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA) can also be the evolved base station (Evolutional Node B, eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or access point , Or the base station gNB in the future 5G network, etc., are not limited here.
  • the terminal device can be a wireless terminal device or a wired terminal device.
  • the wireless terminal device can be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connection function, or other connected to a wireless modem Processing equipment.
  • a wireless terminal device can communicate with one or more core networks via a wireless access network.
  • the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal device, for example, It can be a portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile device, which exchanges language and/or data with the wireless access network.
  • Wireless terminal equipment can also be called system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), mobile station (Mobile), remote station (Remote Station), remote terminal equipment (Remote Terminal) , Access terminal equipment (Access Terminal), user terminal equipment (User Terminal), user agent (User Agent), user equipment (User Device or User Equipment), and sensors with network access functions are not limited here.
  • the first terminal device and the second terminal device may be vehicles, pedestrians, or roadside infrastructure.
  • Sidelink communication between the vehicle and the vehicle is realized; when the first terminal device is a vehicle and the second terminal device is a pedestrian, the communication between the vehicle and the pedestrian is realized.
  • Sidelink communication when the first vehicle is a vehicle and the second terminal device is a roadside infrastructure, Sidelink communication between the vehicle and the roadside infrastructure is realized.
  • the roadside infrastructure refers to the facilities installed on the road or the roadside for V2X communication, including but not limited to: traffic lights, track lines, road signs, etc.
  • the data packet sent on Sidelink can be a unicast communication data packet or a multicast communication data packet.
  • Unicast communication means that there is only one device at the sender and receiver, and it is sent in multicast communication.
  • the end is one device, and the receiving end is multiple devices.
  • vehicle A when vehicle A encounters obstacles, braking, deceleration, loss of control or traffic accidents, vehicle A sends early warning information to vehicle B, and vehicle B receives the early warning information and decelerates or brakes based on the early warning information. , To prevent the occurrence of collision and rear-end collision.
  • FIG. 2B is a schematic diagram of another application scenario to which this application is applicable.
  • the scenario includes vehicle A, vehicle B, vehicle C, vehicle D, vehicle E, and vehicle F.
  • V2X service data can be transmitted between any two vehicles through Sidelink.
  • vehicle A when vehicle A is out of control, vehicle A sends warning information to vehicle B, vehicle C, vehicle D, and vehicle E respectively. After these vehicles receive the warning information, according to The warning information makes deceleration or braking behaviors to prevent collision accidents.
  • Fig. 2A illustrates a scenario where a vehicle uses Sidelink to perform unicast communication between a vehicle
  • Fig. 2B illustrates a scenario where a vehicle uses a Sidelink to perform multicast communication between a vehicle. It is understandable that in either the unicast communication scenario or the multicast communication scenario, in addition to vehicles, pedestrians, roadside infrastructure, etc. may also be included.
  • FIG. 2A and FIG. 2B are only examples of possible application scenarios and are not limiting, and the present application can also be applied to more application scenarios.
  • the receiving end sends HARQ feedback information to the sending end according to the reception of the data packet.
  • the HARQ feedback information includes acknowledgement information (acknowledge, ACK) or non-acknowledge (NACK), Among them, ACK indicates successful reception, and NACK indicates reception failure.
  • the sender monitors the HARQ feedback information, and if it does not receive ACK or NACK, or receives NACK, it determines to retransmit the data packet, and if it receives ACK, it continues to send subsequent data packets. Through the above HARQ feedback process, the reliability of Sidelink transmission data packets is guaranteed.
  • This embodiment provides a method for a first terminal device to determine the time-frequency resource of HARQ feedback information corresponding to each data according to the feedback priority of different data, which specifically includes:
  • the first terminal device after receiving each piece of data, the first terminal device respectively determines the feedback priority of each piece of data.
  • the feedback priority of the data includes: the feedback priority corresponding to the type of the data, or the feedback priority corresponding to the second terminal device sending the data, or the feedback priority corresponding to the type of the data and sending the data The feedback priority corresponding to the second terminal device.
  • the first terminal device determines the feedback priority of each data according to the type of each received data. Specifically, different types of data correspond to different feedback priorities. It is understandable that there are many ways to divide data types, which are not specifically limited in this application, and only two optional implementation ways are used as examples for description.
  • the data is divided into a video type and a text type according to the service type of the data.
  • the video type data has a high feedback priority
  • the text type data has a low feedback priority. That is, if the first terminal device receives the first data and the second data, the first data is of the video type, and the second data is of the text type, the feedback priority of the first data is higher than the feedback priority of the second data .
  • the first terminal device determines the feedback priority of the data according to the data type.
  • the second terminal device sends data to the first terminal device, the feedback priority of the data is carried in the data, and the second terminal device parses the received data and obtains the data contained therein. Feedback priority.
  • the first terminal device determines the feedback priority of each data according to the feedback priority corresponding to the second terminal device that sends each data.
  • each terminal device corresponds to a priority.
  • the data sent by the terminal device with the first priority is the first feedback priority
  • the data sent by the terminal device with the second priority is the second feedback priority.
  • the corresponding terminal equipment is the first priority terminal equipment.
  • the data sent by the terminal equipment corresponding to these special vehicles is high feedback priority.
  • the data sent by the terminal device corresponding to the vehicle has a low feedback priority.
  • the first terminal device receives the first data and the second data
  • the first data is sent by the terminal device corresponding to the police car
  • the second data is sent by the terminal device corresponding to the ordinary vehicle
  • the feedback of the first data The priority is higher than the feedback priority of the second data.
  • this embodiment does not specifically limit the priority division method of the terminal device.
  • the foregoing is only an exemplary description, and other priority division methods are also possible.
  • the first terminal device determines the feedback priority of each data according to the type of each received data and the priority of the terminal device that sends each data.
  • the feedback priority of each data is first determined according to the type of each data. If multiple data have the same feedback priority, then the feedback priority is determined according to the priority of the terminal device that sends the data. Or, first determine the feedback priority of each data according to the priority of the terminal device that sends each data. If multiple data have the same feedback priority, then determine the feedback priority of the data according to the type of the data.
  • the feedback priority of data can be two, such as: the first feedback priority and the second feedback priority, where the first feedback priority can also be referred to as high feedback priority.
  • the second feedback priority can also be referred to as the low feedback priority.
  • the feedback priority of data can also be more than two. Taking 6 feedback priorities as an example, in the order of priority from high to low, they are: feedback priority 1, feedback priority 2, feedback priority 3, feedback Priority 4, feedback priority 5, feedback priority 6.
  • the first feedback priority and the second feedback priority described in this embodiment and subsequent embodiments may be one or more of the above six.
  • feedback priority 1, feedback priority 2, and feedback priority 3 are the first feedback priority, also called high feedback priority
  • feedback priority 4, feedback priority 5, and feedback priority 6 are the second feedback priority Level, also known as low feedback priority.
  • the first terminal device determines the time-frequency resource of the HARQ feedback information corresponding to each data according to the feedback priority of each data.
  • the time-frequency resources include: time-domain resources or frequency-domain resources, or time-frequency resources and frequency-domain resources.
  • the first terminal device may determine the time domain of the HARQ feedback information corresponding to each data according to the feedback priority of each data; the first terminal device may also determine each data according to the feedback priority of each data.
  • the corresponding HARQ feedback information occupies the subcarrier in the frequency domain; the first terminal device can also determine the feedback time of the HARQ feedback information corresponding to each data in the time domain according to the feedback priority of each data, and the occupation in the frequency domain Sub-carriers.
  • the first terminal device may determine the time-frequency resource of the HARQ feedback information corresponding to each data from the resource pool pre-allocated by the network device.
  • the network device will pre-allocate resource pools for the first terminal device and the second terminal device.
  • the resources in the resource pool are used for Sidelink transmission.
  • the second terminal device selects resources from the resource pool pre-allocated by the network device to send data
  • the first terminal device selects resources from the resource pool pre-allocated for the network device to send the HARQ feedback information.
  • the resource pool involved in this application refers to a collection of time-frequency resources.
  • the first terminal device may determine the feedback time of HARQ feedback information corresponding to each data according to the feedback priority of each data, that is, determine the time domain resource of the HARQ feedback information corresponding to each data.
  • the frequency domain resource corresponding to the HARQ feedback information is not specifically limited, and any available resource in the frequency domain can be selected.
  • the first terminal device to perform HARQ feedback on the received data, namely: separate timely feedback and delayed unified feedback. Introduce separately below.
  • the HARQ feedback information corresponding to each data is fed back using a separate resource, and the feedback time of the HARQ feedback information corresponding to the data is the next feedbackable time after the data transmission is completed, that is In other words, the feedback time of the HARQ feedback information corresponding to the data is the feedbackable time closest to the receiving time of the data.
  • the “feedback time closest to the time of receiving the data” in this application refers to the time when the data is received The next time after the time corresponding to the available resources that can be used to feed back HARQ information.
  • the resources corresponding to time 3, time 5, and time 7 are resources that can be used to feed back HARQ information. If the first terminal device receives the first data at time 2, then The feedback time of the HARQ feedback information corresponding to the first data is time 3; if the first terminal device receives the second data at time 4, the feedback time of the HRAQ feedback information corresponding to the second data is time 5.
  • Delayed unified feedback means that all data received within a preset time window [n, n+T] are fed back using a certain resource after the preset time window, and the HRAQ feedback information corresponding to these data
  • the feedback time is n+T+k, where n is the start time of the preset time window, T is the length of the preset time window, and k is the time interval between the feedback time and the end time of the preset time window.
  • the preset time window represents a time period in the time domain
  • the length T of the preset time window is the length of the time period
  • the length T of the preset time period can be a preset number of frames, subframes, or Time slot.
  • the length of the preset time window is the length of 5 subframes
  • all the data received in these 5 subframes is at time n+T+k Corresponding resources for feedback.
  • the second terminal device transmitting end
  • the network device configures the preset time window T
  • the length T of the time window is configured for the first terminal device and the second terminal device; in another possible implementation manner, the length T of the preset time window can also adopt a default value, which is the first terminal device and the first terminal device and the second terminal device. 2.
  • the terminal device is agreed in advance; in another possible implementation manner, the length T of the preset time window may also be determined by the first terminal device.
  • the length of the time window determined by the first terminal device T can be fixed, or it can be adjusted adaptively according to the number of received data packets.
  • the current preset time window is determined according to the configuration parameters of the time window.
  • the configuration parameters of the time window indicate that subframe 0 to subframe 4 are a time window, and subframe 5 to subframe 9 are One time window, after receiving data from subframe 0 to subframe 4, it can be determined that the starting time of the preset time window is subframe 0, and after receiving data from subframe 5 to subframe 9, it can be determined
  • the start time of the preset time window is subframe 5.
  • an event trigger method is used to determine the start time of the preset time window.
  • subframe 3 is used as the start time of the preset time window; when the preset time window ends, the time when the next data is received is taken as the start time of the next preset time window time.
  • k is the time interval between the feedback time and the end time of the preset time window, and k may be a preset number of frames, subframes or time slots. Exemplarily, when k is a length of 2 subframes, it means that the second subframe after the end time of the preset time window is used as the feedback time.
  • the second terminal device transmitting end
  • the network device sets the value of k Configured for the first terminal device and the second terminal device
  • the value of k can also adopt a default value, which is agreed upon in advance by the first terminal device and the second terminal device
  • the first terminal device determines the k value corresponding to the different data according to the feedback priority of the different data.
  • FIG. 3A is a schematic diagram of a separate timely feedback method provided by this application.
  • the horizontal axis represents the time domain
  • the vertical axis represents the frequency domain.
  • the resources available for feedback of HARQ information in the resource pool of the first terminal device are resources corresponding to time t4 and time t5. Since the most recent feedbackable time after data 1 is received is time t4, the first terminal device feeds back the HARQ feedback information corresponding to data 1 at time t4.
  • the first terminal device feeds back HARQ feedback information corresponding to data 2 at time t5.
  • Figure 3B is a schematic diagram of the delayed unified feedback method provided by this application. As shown in Figure 3B, assuming that the first terminal device successively receives data 1, data 2, and data 3 within the time window [n, n+T], then the first A terminal device uniformly feeds back the HARQ feedback information of the three data at the time n+T+k.
  • the HARQ feedback of the data is more timely, without waiting for the end of the preset time window, and it can be ensured that the HARQ feedback information corresponding to the data is fed back as soon as possible.
  • HARQ feedback information of multiple data can be fed back in one resource, which can save wireless resources.
  • different HARQ feedback modes can be used according to the feedback priority of the data to ensure that data with a high feedback priority can be fed back before data with a low feedback priority.
  • first implementation manner and the second implementation manner are applicable to the case where the first terminal device receives one piece of data
  • the third implementation manner is applicable to the case where the first terminal device receives multiple data.
  • the feedback time of the HARQ feedback information corresponding to the data is the closest available time to the receiving time of the data. At the feedback moment, HARQ feedback is performed in a separate and timely feedback manner.
  • the feedback time of the HARQ feedback information corresponding to the data is n+T+k, where n is the start time of the preset time window, T is the length of the preset time window, k is the time interval between the feedback time and the end time of the preset time window, and The feedback moments of all the data of the second feedback priority received within the preset time window are the same.
  • the second feedback priority is lower than the first feedback priority.
  • the first feedback priority may also be referred to as high feedback priority
  • the second feedback priority may also be referred to as low feedback priority
  • the high feedback priority and low feedback priority in this embodiment may refer to the relatively high or low feedback priority.
  • the data received by the first terminal device includes data of feedback priority 1 and data of feedback priority 2, then feedback priority 1 is high feedback priority, and feedback priority 2 is low feedback priority.
  • feedback priority 2 is a high feedback priority
  • feedback priority 3 is a low feedback priority.
  • the feedback time of the HARQ feedback information corresponding to the data is the distance from the reception of the data The closest possible feedback time is the HARQ feedback in a separate timely feedback mode.
  • the HARQ corresponding to the data The feedback time of the feedback information is n+T+k, where n is the start time of the preset time window, T is the length of the preset time window, and k is the time between the feedback time and the end time of the preset time window.
  • n is the start time of the preset time window
  • T is the length of the preset time window
  • k is the time between the feedback time and the end time of the preset time window
  • the feedback moments of all the data whose feedback priority is lower than or equal to the preset priority received within the preset time window are the same.
  • data higher than the preset priority may also be referred to as high feedback priority data
  • data lower than or equal to the preset priority may also be referred to as low feedback priority data.
  • the high feedback priority and low feedback priority in this embodiment may refer to the absolute high or low of the feedback priority.
  • the data received by the first terminal device includes data from feedback priority 1 to feedback priority 6.
  • the preset priority is 3
  • feedback priority 1 and 2 are high feedback priority
  • 4, 5, and 6 are low feedback priority.
  • the preset priority is 4, the feedback priorities 1, 2, and 3 are high feedback priorities, and the feedback priorities 4, 5, and 6 are low feedback priorities.
  • the first feedback priority is higher than the second feedback priority.
  • the feedback time of the HARQ feedback information corresponding to the data of the first feedback priority is earlier than the feedback time of the HARQ feedback information corresponding to the data of the second feedback priority. In other words, it is ensured that data with high feedback priority is fed back first.
  • Method 1 The data of the first feedback priority is fed back separately in time, and the data of the second feedback priority is fed back in a delayed unified manner. That is to say: if the data received by the first terminal device within the preset time window includes the data of the first feedback priority and the data of the second feedback priority, the first feedback priority is higher than the first feedback priority.
  • the feedback time of the HARQ feedback information corresponding to the data of the first feedback priority is the feedbackable time closest to the receiving time of the data of the first feedback priority; the preset time window
  • the feedback time of the HARQ feedback information corresponding to the data of the second feedback priority received within is n+T+k, where n is the start time of the preset time window, and T is the preset
  • n is the start time of the preset time window
  • T is the preset
  • k is the time interval between the feedback time of the HARQ feedback information corresponding to the data of the second feedback priority and the end time of the preset time window.
  • Method 2 Both the data of the first feedback priority and the data of the second feedback priority adopt a delayed unified feedback method, but the time interval k is different. That is to say: if the data received by the first terminal device within the preset time window includes the data of the first feedback priority and the data of the second feedback priority, the first feedback priority is higher than the second feedback priority.
  • the feedback time of HARQ feedback information corresponding to the data of the first feedback priority is n+T+j
  • the feedback time of HARQ feedback information corresponding to the data of the second feedback priority is n+T +m, m>j
  • n is the start time of the preset time window
  • T is the length of the preset time window
  • j and m are the feedback time and the end of the preset time window The time interval between moments.
  • the method for determining the frequency domain resources of the HARQ feedback information corresponding to each data in this application is not specifically limited.
  • the first terminal device can combine the bandwidth and resource pool it supports to determine the frequency domain resources. Frequency domain resources are selected, and any resource in the frequency domain can be selected.
  • the first terminal device determines the time-frequency resource of the HARQ feedback information corresponding to each data according to the feedback priority of the data, which can realize priority feedback on the data with high feedback priority and ensure the data with high feedback priority. Data that is earlier than the lower priority is fed back. It is understandable that data with high feedback priority is usually important data related to safe driving in V2X scenarios. Priority feedback on data with high feedback priority can ensure the effective transmission of important data, thereby ensuring the safety of vehicle driving.
  • Fig. 4 is a flowchart 1 of a data processing method provided by an embodiment of this application.
  • the execution subject of this embodiment is the first terminal device as the receiving end.
  • the method of this embodiment includes:
  • the first terminal device receives first data and second data from at least one second terminal device, where the feedback priority of the first data is higher than the feedback priority of the second data.
  • the first terminal device sends the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data to the at least one second terminal device.
  • the feedback time is earlier than the feedback time of the second HARQ feedback information.
  • first data and the second data may be received from the same second terminal device, or may be received from different second terminal devices respectively.
  • the first data and the second data may be received at the same time, or may be received sequentially within a preset time window.
  • the feedback priority of the data includes: the feedback priority corresponding to the type of the data, and/or the feedback priority corresponding to the terminal device that sends the data.
  • the feedback time of the first HARQ feedback information corresponding to the first data is earlier than that of the first data.
  • the feedback time of the second HARQ feedback information corresponding to the second data does not specifically limit the feedback method used for the first data and the second data.
  • the method of independent timely feedback can be used, or the method of delayed unified feedback can also be used, as long as the high feedback priority can be guaranteed.
  • the feedback time of data is earlier than the feedback time of data with low feedback priority.
  • a separate timely feedback manner is adopted for the first data
  • a delayed unified feedback manner is adopted for the second data. That is, if the data received by the first terminal device within the preset time window includes the first data and the second data, and the feedback priority of the first data is higher than the feedback priority of the second data, then The feedback time of the first HRAQ feedback information is the feedbackable time closest to the receiving time of the first data, and the feedback time of the second HARQ feedback information is n+T+k, where n is the preset Let the start time of the time window, T be the length of the preset time window, and k be the time interval between the feedback time of the second HARQ feedback information and the end time of the preset time window.
  • a delayed unified feedback method is adopted for both the first data and the second data. That is, if the data received by the first terminal device within the preset time window includes the first data and the second data, and the feedback priority of the first data is higher than the feedback priority of the second data, then The feedback time of the first HRAQ feedback information is n+T+j, and the feedback time of the second HRAQ feedback information is n+T+m, m>j, where n is the starting time of the preset time window, and T Is the length of the preset time window, and j and m are the time interval between the feedback moment and the end moment of the preset time window.
  • Case 1 In Figures 5A and 5B, suppose that within the preset time window [n, n+T], terminal device A receives data 1 and data 2 from terminal device B, data 2 is received at time t2, and data 1 is at time t2. Receive at time t3. Among them, data 1 is data of the danger warning type, data 1 is used to indicate that the vehicle corresponding to terminal device B is out of control, data 2 is common type data, and data 2 is used to indicate the vehicle location periodically reported by terminal device B to terminal device A information. In this case, the feedback priority of data 1 is higher than the feedback priority of data 2. In order to ensure timely feedback of data 1, the terminal device A can adopt the following two processing methods.
  • FIG. 5A is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application.
  • the first feedbackable time (time t4) after the receiving time of data 1 (time t3) is taken as the feedback time of the HRAQ feedback information corresponding to data 1
  • the n+T+k time is taken as the time corresponding to data 2.
  • Case 2 In Figure 5C and Figure 5D, suppose that within the preset time window [n, n+T], terminal device A receives data 1 from terminal device B, and receives data 2, data 1, and data from terminal device C 2 Receive at the same time at time 3.
  • the vehicles corresponding to terminal device B and terminal device C are both ordinary vehicles
  • data 1 is data of the danger warning type
  • data 1 is used to indicate that the vehicle corresponding to terminal device B is out of control
  • data 2 is common type data
  • data 2 is used To instruct the terminal device C to periodically report the vehicle location information to the terminal device A.
  • the feedback priority of data 1 is higher than the feedback priority of data 2.
  • the terminal device A can adopt the following two processing methods.
  • FIG. 5C is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application.
  • the first feedbackable time (time t4) after the receiving time of data 1 (time t3) is taken as the feedback time of the HRAQ feedback information corresponding to data 1
  • the n+T+k time is taken as the time corresponding to data 2.
  • Case 3 Assume that within the preset time window [n, n+T], terminal device A receives data 1 from terminal device B, receives data 2 from terminal device C, and data 1 and data 2 are received at time 3 at the same time.
  • the vehicle corresponding to the terminal device B is a police car
  • the vehicle corresponding to the terminal device C is a normal vehicle.
  • the feedback priority of data sent by police cars is higher than the feedback priority of data sent by ordinary vehicles
  • the feedback priority of data 1 is higher than the feedback priority of data 2.
  • the terminal device A can adopt the following two processing methods.
  • the HARQ feedback processing corresponding to the two processing methods in this case can also be seen in FIG. 5C and FIG. 5D.
  • a separate timely feedback method is used for data 1
  • a delayed unified feedback method is used for data 2.
  • the first feedbackable time (time 4) after the receiving time of data 1 (time 3) is regarded as the feedback time of the HRAQ feedback information corresponding to data 1
  • the n+T+k time is regarded as the HRAQ feedback information corresponding to data 2. Feedback moment.
  • the delayed unified feedback method is adopted for both data 1 and data 2.
  • the HRAQ feedback information may be sent on a physical sidelink feedback channel (PSFCH).
  • PSFCH physical sidelink feedback channel
  • the second terminal device after the second terminal device sends data to the first terminal device, it needs to always monitor the PSFCH channel to obtain the HRAQ feedback information corresponding to the data sent by itself.
  • a first terminal device receives first data and second data from at least one second terminal device, and the feedback priority of the first data is higher than the feedback priority of the second data
  • the first terminal device sends the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data to the at least one second terminal device, and the feedback time of the first HARQ feedback information It is earlier than the feedback time of the second HARQ feedback information; it can be seen that this embodiment realizes the way that the receiving end independently determines the HARQ feedback resource, and ensures that the data with high feedback priority is ahead of the data with low feedback priority.
  • the data is fed back.
  • Data with high feedback priority is usually important data related to safe driving in the V2X scene. Priority feedback on data with high feedback priority can ensure the effective transmission of important data, thereby ensuring the safety of vehicle driving.
  • the first terminal device when the first terminal device also receives the third data and/or the first data from the at least one second terminal device In the case of four data, the following implementation manner can be used for HARQ feedback.
  • the first terminal device receives the first data, the second data, and the third data from at least one second terminal device, and the feedback priority of the first data is higher than that of the second data.
  • Feedback priority the feedback priority of the third data is the same as the feedback priority of the first data, the receiving time of the third data is later than the receiving time of the first data; the first terminal device Sending first HRAQ feedback information corresponding to the first data, second HARQ feedback information corresponding to the second data, and third HARQ feedback information corresponding to the third data to the at least one second terminal device,
  • the feedback time of the first HARQ feedback information is earlier than the feedback time of the second HARQ feedback information
  • the feedback time of the third HARQ feedback information is earlier than and later than the feedback time of the second HARQ feedback information. At the feedback moment of the first HARQ feedback information.
  • terminal device A receives data 1 and data 2 from terminal device B, and receives data 3 from terminal device C.
  • data 1 is received at time t1
  • data 2 and data 3 are received at time t2
  • the feedback priority of data 1 is higher than the feedback priority of data 2
  • the feedback priority of data 3 is the same as that of data 1. That is, data 1 and data 3 are data with high feedback priority
  • data 2 is data with low feedback priority.
  • terminal device A can adopt the following two processing methods.
  • terminal device A uses a separate timely feedback method for data 1, data 2, and data 3.
  • FIG. 6A is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application. As shown in FIG. 6A, it is assumed that the resources available for HARQ feedback by terminal device A are resources corresponding to times t3, t4, and t6.
  • the terminal device A uses the first time available for HARQ feedback after the receiving time of the data 1 (time t3) as the feedback time of the HARQ feedback information corresponding to the data 1. For data 2 and data 3, since the feedback priority of data 3 is higher than the feedback priority of data 2, data 3 can be fed back before data 2.
  • time t4 is taken as data 3.
  • time t6 is taken as the feedback time of HARQ feedback information corresponding to data 2.
  • terminal device A uses a separate timely feedback method for both data 1 and data 3, and uses a delayed unified feedback method for data 2.
  • FIG. 6B is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application. As shown in FIG. 6B, it is assumed that the resources available for HARQ feedback by terminal device A are resources corresponding to times t3, t4, t6, and t8. The terminal device A uses the first time available for HARQ feedback after the receiving time of the data 1 (time t3) as the feedback time of the HARQ feedback information corresponding to the data 1.
  • time t4 is taken as data 3.
  • the feedback time of the corresponding HARQ feedback information. Taking time n+T+k as the feedback time of HARQ feedback information corresponding to data 2, the case of k 2 is illustrated in FIG. 6B.
  • the first terminal device receives the first data, the second data, and the third data from at least one second terminal device, and the feedback priority of the first data is higher than that of the second data
  • the feedback priority of the third data is the same as the feedback priority of the first data
  • the first terminal device sends the first data corresponding to the first data to the at least one second terminal device
  • One HRAQ feedback information, second HARQ feedback information corresponding to the second data, and third HARQ feedback information corresponding to the third data wherein the feedback time of the first HARQ feedback information is earlier than the second HARQ feedback information
  • the third HARQ feedback information and the first HARQ feedback information are sent in the same time-frequency resource.
  • terminal device A receives data 1 and data 2 from terminal device B, and receives data 3 from terminal device C, and the feedback priority of data 1 is higher than that of data 2.
  • the feedback priority of data 3 is the same as the feedback priority of data 1, that is, data 1 and data 3 are data with high feedback priority, and data 2 is data with low feedback priority.
  • terminal device A can adopt the following processing methods.
  • FIG. 6C is an example diagram of HARQ feedback processing on data in an embodiment provided by this application.
  • terminal device A uses time n+T+j as the HRAQ feedback information corresponding to data 1 and the corresponding HRAQ feedback information corresponding to data 3.
  • the feedback time of HARQ feedback information that is, the HARQ feedback information corresponding to data 1 and data 3 are fed back in the same resource, and the time n+T+m is used as the feedback time of HRAQ feedback information corresponding to data 2, m> j.
  • the first terminal device receives the first data, the second data, the third data, and the fourth data from the at least one second terminal device, and the feedback priority of the first data is higher than The feedback priority of the second data, the feedback priority of the third data is the same as the feedback priority of the first data, and the receiving time of the third data is later than the receiving time of the first data, The feedback priority of the fourth data is the same as the feedback priority of the second data, and the receiving time of the fourth data is later than the receiving time of the second data;
  • a second terminal device sends the first HARQ feedback information corresponding to the first data, the second HARQ feedback information corresponding to the second data, the third HARQ feedback information corresponding to the third data, and the fourth HARQ corresponding to the fourth data.
  • the feedback time of the first HARQ feedback information is earlier than the feedback time of the second HARQ feedback information
  • the feedback time of the third HARQ feedback information is earlier than the feedback time of the second HARQ feedback information
  • the feedback time of the fourth HARQ feedback information is later than the feedback time of the second HARQ feedback information.
  • terminal device A receives data 1 and data 3 from terminal device B, and receives data 2 and data 4 from terminal device C.
  • the vehicle corresponding to terminal device B is a police car
  • terminal device C corresponds to If the vehicle of is a normal vehicle, then: data 1 and data 3 sent by terminal device B are high-priority data, and data 2 and data 4 sent by terminal device C are low-priority data.
  • terminal device A can adopt the following processing methods.
  • FIG. 7A is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application. As shown in FIG. 7A, it is assumed that the available resources of terminal device A that can be used for HARQ feedback are the resources corresponding to time t2, t3, t4, and t5 .
  • the terminal device A uses the first time available for HARQ feedback (time t2) after the receiving time of the data 1 as the feedback time of the HARQ feedback information corresponding to the data 1.
  • time t3 is taken as the feedback time of the HARQ feedback information corresponding to the data 3. Since time t3 has been used to perform HARQ feedback on data 3, and the first time available for HARQ feedback after the receiving time of data 2 is time t4, time t4 is taken as the feedback time of HARQ feedback information corresponding to data 2. Similarly, take the time t5 as the feedback time of the HARQ feedback information corresponding to the data 4.
  • the order of HARQ feedback can be determined according to the feedback priority of these data; if there are multiple data with the same feedback priority , The order of HARQ feedback can be determined according to the order of receiving these data.
  • the feedback priority of data 1 and data 3 is higher than the feedback priority of data 2 and data 4
  • data 1 and data 3 should perform HARQ feedback before data 2 and data 4.
  • data 1 is received before data 3 and data 2 is received before data 4
  • data 1 should be HARQ feedback before data 3
  • data 2 should be HARQ feedback before data 4. Therefore, the order of terminal device A for HARQ feedback is: data 1, data 3, data 2, and data 4. It is realized that data with high feedback priority is given priority to feedback.
  • the first terminal device receives the first data, the second data, the third data, and the fourth data from the at least one second terminal device, and the feedback priority of the first data is higher than The feedback priority of the second data, the feedback priority of the third data is the same as the feedback priority of the first data, and the receiving time of the third data is later than the receiving time of the first data, The feedback priority of the fourth data is the same as the feedback priority of the second data; the first terminal device sends the first HARQ feedback information corresponding to the first data to the at least one second terminal device, The second HARQ feedback information corresponding to the second data, the third HARQ feedback information corresponding to the third data, and the fourth HARQ feedback information corresponding to the fourth data, wherein the feedback time of the first HARQ feedback information is earlier than the The feedback time of the second HARQ feedback information, the feedback time of the third HARQ feedback information is earlier than the feedback time of the second HARQ feedback information and later than the feedback time of the first HARQ feedback information, the fourth
  • terminal device A receives data 1 and data 3 from terminal device B, and receives data 2 and data 4 from terminal device C.
  • the vehicle corresponding to terminal device B is a police car
  • terminal device C corresponds to If the vehicle of is a normal vehicle, then: data 1 and data 3 sent by terminal device B are high-priority data, and data 2 and data 4 sent by terminal device C are low-priority data.
  • terminal device A can adopt the following processing methods.
  • the terminal device A uses a separate timely feedback method for data 1 and data 3, and a delayed unified feedback method for data 2 and data 4, so that data 1 and data 3 perform HARQ feedback earlier than data 2 and data 4.
  • FIG. 7B is an example diagram of performing HARQ feedback processing on data in an embodiment provided by this application. As shown in FIG. 7A, it is assumed that the available resources of terminal device A that can be used for HARQ feedback are the resources corresponding to time t2, t3, t4, and t5 .
  • the terminal device A uses the first HARQ feedback time (time t2) after the receiving time of data 1 as the feedback time of the HARQ feedback information corresponding to data 1, and the first HARQ feedback time after receiving data 3 is used for HARQ feedback.
  • Time (time t3) is used as the feedback time of HARQ feedback information corresponding to data 3.
  • time n+T+k after the preset time window is used as the HARQ feedback information corresponding to data 2 and the HARQ feedback information corresponding to data 4, that is, the HARQ feedback information corresponding to data 2 and data 4 is at time n+T +k corresponding resources for unified feedback. It can be seen from FIG. 7B that the priority feedback of data with high feedback priority is realized.
  • the first terminal device receives the first data, the second data, the third data, and the fourth data from the at least one second terminal device, and the feedback priority of the first data is higher than The feedback priority of the second data, the feedback priority of the third data is the same as the feedback priority of the first data, and the feedback priority of the fourth data is the same as the feedback priority of the second data Same; the first terminal device sends the first HARQ feedback information corresponding to the first data, the second HARQ feedback information corresponding to the second data, and the third HARQ corresponding to the third data to the at least one second terminal device Feedback information and fourth HARQ feedback information corresponding to the fourth data, wherein the feedback time of the first HARQ feedback information is earlier than the feedback time of the second HARQ feedback information, and the third HARQ feedback information and the The first HARQ feedback information is sent in the same time-frequency resource, and the fourth HARQ feedback information and the second HARQ feedback information are sent in the same time-frequency resource.
  • terminal device A receives data 1 and data 3 from terminal device B, and receives data 2 and data 4 from terminal device C.
  • the vehicle corresponding to terminal device B is a police car
  • terminal device C corresponds to If the vehicle of is a normal vehicle, then: data 1 and data 3 sent by terminal device B are high-priority data, and data 2 and data 4 sent by terminal device C are low-priority data.
  • terminal device A can adopt the following processing methods.
  • FIG. 7C is an example diagram of HARQ feedback processing on data in an embodiment provided by this application.
  • terminal device A takes the time n+T+j after the preset time window as the feedback time of HARQ feedback information corresponding to data 1 and HARQ feedback information corresponding to data 3, that is, the time corresponding to data 1 and data 3.
  • the HARQ feedback information is fed back uniformly at the resource corresponding to time n+T+j; and the time n+T+m after the preset time window is used as the HARQ feedback information corresponding to data 2 and the HARQ feedback information corresponding to data 4.
  • the HARQ feedback information corresponding to data 2 and data 4 is fed back uniformly at the resource corresponding to time n+T+m, and m>j.
  • the first terminal device may also receive more information. Much data. In all the data received by the first terminal device, if both the low feedback priority data and the high feedback priority data are included, you can refer to the above-mentioned embodiment. According to the different feedback priority, the low priority data Corresponding feedback methods are adopted for data with high feedback priority, so that data with high feedback priority can be fed back earlier than data with low feedback priority.
  • FIG. 8A is an example diagram of HARQ feedback processing on data in an embodiment provided by this application
  • FIG. 8B is an example diagram of HARQ feedback processing on data in an embodiment provided by this application.
  • the horizontal axis represents the time domain
  • the vertical axis represents the frequency domain.
  • TB2, TB3, and TB5 are data with high feedback priority
  • TB1, TB4, and TB6 are data with low feedback priority.
  • the terminal device can perform HARQ feedback in two ways as shown in FIG. 8A and FIG. 8B.
  • the example shown in FIG. 8A is to use a separate timely feedback method for data with a high feedback priority, and use a delayed unified feedback method for feedback for data with a low feedback priority. It is assumed that the terminal equipment feeds back the HARQ feedback information of the above-mentioned data on carrier 3. As shown in Figure 8A, for the data TB2, TB3, and TB5 with high feedback priority, a separate timely feedback method is adopted. The HARQ feedback information of TB2 is fed back to the first feedbackable resource after the time when TB2 is received.
  • FIG. 8B illustrates that both the data with high feedback priority and the data with low feedback priority are fed back in a delayed unified feedback manner. It is assumed that the terminal equipment feeds back the HARQ feedback information of the above-mentioned data on carrier 3. As shown in FIG. 8B, the feedback interval for data with high feedback priority is set to k1, and the feedback interval for data with low feedback priority is set to k2, where k1 ⁇ k2.
  • the data TB2, TB3, and TB5 with high feedback priority received in the preset time window [n, n+T] are fed back uniformly at n+T+k1; in the preset time window [n, n
  • the data TB1, TB4 and TB6 with low feedback priority received within +T] will be fed back uniformly at n+T+k2.
  • the HARQ feedback information sent by the first terminal device is fed back to multiple second terminals equipment.
  • terminal device A receives first data from terminal device B, receives second data from terminal device C, receives third data from terminal device D, and receives fourth data from terminal device E.
  • the first terminal device needs to feed back the first HARQ feedback information corresponding to the first data, the second HARQ feedback information corresponding to the second data, the third HARQ feedback information corresponding to the third data, and the fourth HARQ feedback information corresponding to the fourth data. .
  • the first HARQ feedback information needs to be fed back to the terminal device B
  • the second HARQ feedback information needs to be fed back to the terminal device C
  • the third HARQ feedback information needs to be fed back to the terminal device D
  • the fourth HARQ feedback information is Need to feed back to the terminal equipment E.
  • the feedback resource corresponding to each data is shared with the physical bypass shared channel ( Physical Sidelink Shared Channel (PSSCH) is mapped, that is, a corresponding relationship is established between different HARQ feedback resources and different terminal devices to ensure that different terminal devices can receive corresponding HARQ feedback information in the corresponding resources.
  • PSSCH Physical Sidelink Shared Channel
  • a possible mapping method is: in combination with the above example, terminal device A feeds back the HARQ feedback information of the above 4 data on 4 resources, where resource 1 corresponds to the first HARQ feedback information of terminal device B, and resource 2 corresponds to the terminal For the second HARQ feedback information of device C, resource 3 corresponds to the third HARQ feedback information of terminal device D, and resource 4 corresponds to the fourth HARQ feedback information of terminal device E.
  • mapping method is only an exemplary description, and this application is not limited to this, and other mapping methods may also be used in practical applications.
  • mapping method may be pre-configured by the network device, or agreed in advance between terminal devices, or determined by the receiving end and sent by the receiving end to each sending end.
  • the first terminal device may also determine a retransmission manner of HARQ feedback information corresponding to each of the data according to the feedback priority of each of the data, and the retransmission manner is as follows: One type: frequency division retransmission, time division retransmission, and no retransmission.
  • step S402 may also specifically include: the first terminal device repeatedly sends the first HARQ feedback information and the second HARQ feedback to the at least one second terminal device Information, the repeated transmission mode is one of the following: frequency division retransmission, time division retransmission, and non-retransmission.
  • frequency division retransmission refers to simultaneously sending HARQ feedback information on adjacent frequency domain resources.
  • HARQ feedback information is fed back on two adjacent bandwidth parts (Bandwidth Part, BWP) at the same time.
  • BWP Bandwidth Part
  • HARQ feedback information is sent on BWP1 and BWP2 at the same time.
  • HARQ feedback information is sent on two adjacent carriers at the same time. For example, HARQ feedback information is sent on carrier 1 and carrier 2 at the same time.
  • BWP refers to a part of the system bandwidth, and the system bandwidth here can be the carrier bandwidth.
  • the bandwidth part may also be called a "carrier bandwidth part", or may be called an "operating bandwidth” or a transmission bandwidth.
  • the name and abbreviation of the bandwidth part are not particularly limited in the embodiment of the present application.
  • BWP refers to the bandwidth determined in the first step of the two-level resource allocation during data transmission. It can be a continuous or discontinuous resource in the frequency domain.
  • a bandwidth part contains continuous or non-contiguous K>0 subcarriers; or, a bandwidth part is a frequency domain resource where N>0 non-overlapping continuous or non-contiguous resource blocks (Resource Block) are located; or, one The bandwidth part is the frequency domain resources where M>0 non-overlapping continuous or non-contiguous resource block groups (Resource Block Group, RBG) are located, and one RBG includes P>0 continuous RBs.
  • a bandwidth part is related to a specific set of system parameters (numerology), and the set of system parameters includes at least one of subcarrier spacing and Cyclic Prefix (CP).
  • Time division retransmission refers to sending the HRAQ feedback information repeatedly after the preset retransmission interval ⁇ t after the HARQ feedback information is sent for the first time.
  • the retransmission interval ⁇ t is a length of 2 subframes
  • the HARQ feedback information is repeatedly sent in subframe 5.
  • the first terminal device may perform retransmission on all or part of the frequency domain resources.
  • the working bandwidth of the first terminal device includes BWP1, BWP2, BWP3, and BWP4
  • the first terminal device can retransmit HARQ feedback information on all four BWPs, or only on BWP1 and BWP2.
  • the first terminal device determines which BWPs to retransmit the HARQ feedback information on, and the second terminal device can monitor all BWPs when receiving the HARQ feedback information to ensure that the HARQ feedback can be successfully received information.
  • the network device can also determine which BWPs to retransmit the HARQ feedback information, and deliver the configuration information to the first terminal device and the second terminal device, and further, the first terminal device The HARQ feedback information is retransmitted on the BWP resource indicated by the configuration information, and the second terminal device monitors the BWP resource indicated by the configuration information to receive the HARQ feedback information.
  • the following methods can be used to determine the retransmission interval ⁇ t.
  • the sending end determines the retransmission interval ⁇ t, and sends the retransmission interval ⁇ t to the receiving end.
  • the network device determines the retransmission interval ⁇ t, and delivers the retransmission interval ⁇ t to the first terminal device and the second terminal device.
  • the retransmission interval ⁇ t may adopt a default value, and the default value is agreed upon in advance by the first terminal device and the second terminal device.
  • this embodiment does not specifically limit the number of retransmissions, and the number of retransmissions may be two or more times.
  • the second terminal device In the retransmission mode, if the second terminal device correctly receives certain HARQ feedback information, it can ignore the retransmitted HARQ feedback information.
  • the sending end determines the retransmission mode. Specifically, when the sending end sends data to the receiving end, the retransmission mode corresponding to the data is sent to the receiving end at the same time.
  • the default retransmission method is adopted for data with different feedback priorities. The default retransmission method may be pre-appointed by the sender and receiver, or may be issued by the network device The sender and receiver.
  • the repeated transmission mode of the first HARQ feedback information is frequency division retransmission or time division retransmission
  • the repeated transmission mode of the second HARQ feedback information is non-retransmission.
  • Another way of expressing this implementation manner is: if the data received by the first terminal device includes data of a first feedback priority and data of a second feedback priority, the first feedback priority is higher than the first feedback priority. Second feedback priority, then: the HARQ feedback information corresponding to the data of the first feedback priority is retransmitted by frequency division retransmission or time division retransmission, and the data of the second feedback priority corresponds to the HARQ feedback information
  • the retransmission method is no retransmission.
  • FIG. 9A is a schematic diagram of HARQ feedback information retransmission in an embodiment provided by this application.
  • FIG. 9A illustrates frequency division retransmission of HARQ feedback information corresponding to data with high feedback priority and corresponding data with low feedback priority.
  • the HARQ feedback information is not retransmitted.
  • the terminal device receives TB2, TB3, and TB5 on BWP4, and TB1, TB4, and TB6 on BWP3.
  • TB2, TB3, and TB5 have high feedback priority Level data
  • TB1, TB4, and TB6 are data with low feedback priority.
  • the terminal device when the terminal device performs HARQ feedback on the high feedback priority data TB2, TB3, and TB5, it uses a separate timely feedback method.
  • it When performing HARQ feedback on TB2, it sends TB2's data on BWP1 and BWP2 at the same time.
  • HARQ feedback information when performing HARQ feedback on TB3, send the HARQ feedback information of TB3 on BWP1 and BWP2 at the same time; when performing HARQ feedback on TB5, send the HARQ feedback information of TB5 on BWP1 and BWP2 at the same time.
  • the terminal device When the terminal device performs HARQ feedback on the low feedback priority data TB1, TB4, and TB6, it adopts a delayed unified feedback method, and unified feedback at n+T+k time, and does not retransmit the HARQ feedback information.
  • the terminal device performs HARQ feedback on each data on the frequency domain resources corresponding to BWP1 and BWP2, but this embodiment is not limited to this, and HARQ can also be performed on other BWPs. Feedback.
  • FIG. 9B is a schematic diagram of HARQ feedback information retransmission in an embodiment provided by this application.
  • FIG. 9B illustrates time division retransmission of HARQ feedback information corresponding to data with high feedback priority, and data corresponding to data with low feedback priority.
  • the HARQ feedback information is not retransmitted.
  • the terminal device receives TB2, TB3, and TB5 on BW4, and TB1, TB4, and TB6 on BW3.
  • TB2, TB3, and TB5 have high feedback priority Level data
  • TB1, TB4, and TB6 are data with low feedback priority.
  • the terminal device when the terminal device performs HARQ feedback on the high feedback priority data TB2, TB3, and TB5, it adopts a separate timely feedback method.
  • the HARQ feedback information corresponding to TB2 After sending the HARQ feedback information corresponding to TB2 at time t1, the retransmission interval After ⁇ t, the HARQ feedback information corresponding to TB2 is retransmitted at time t1+ ⁇ t; after sending the HARQ feedback information corresponding to TB3 at time t2, after the retransmission interval ⁇ t, the HARQ corresponding to TB3 is transmitted at time t2+ ⁇ t.
  • the feedback information is retransmitted; after sending the HARQ feedback information corresponding to TB5 at time t3, after the interval retransmission interval ⁇ t, the HARQ feedback information corresponding to TB5 is retransmitted at time t3+ ⁇ t.
  • the terminal device performs HARQ feedback on the low feedback priority data TB1, TB4, and TB6, it adopts a delayed unified feedback method, and unified feedback at n+T+k time, and does not retransmit the HARQ feedback information.
  • the terminal device performs HARQ feedback on each data on the frequency domain resource corresponding to BWP1, but this embodiment is not limited to this, and HARQ feedback may also be performed on other BWPs.
  • frequency division retransmission or time division retransmission is used for HRAQ feedback information corresponding to data with high feedback priority, and HARQ feedback information corresponding to data with low feedback priority is not retransmitted. It can ensure that the HARQ feedback information corresponding to the high feedback priority data can be successfully received by the second terminal device.
  • the repeated transmission manner of the first HARQ feedback information is frequency division retransmission
  • the repeated transmission manner of the second HARQ feedback information is time division retransmission.
  • Another way of expressing this implementation manner is: if the data received by the first terminal device includes data of a first feedback priority and data of a second feedback priority, the first feedback priority is higher than the first feedback priority.
  • Second feedback priority the retransmission mode of HARQ feedback information corresponding to the data of the first feedback priority is frequency division retransmission; Time division retransmission.
  • FIG. 9C is a schematic diagram of HARQ feedback information retransmission in an embodiment provided by this application.
  • FIG. 9C illustrates frequency division retransmission of HARQ feedback information corresponding to data with high feedback priority and corresponding data with low feedback priority.
  • the HARQ feedback information is time-division retransmission. Assuming that within the preset time window [n, n+T], the terminal device receives TB2, TB3, and TB5 on BW4, and TB1, TB4, and TB6 on BW3. Among them, TB2, TB3, and TB5 have high feedback priority Level data, TB1, TB4, and TB6 are data with low feedback priority.
  • the terminal device when the terminal device performs HARQ feedback on the high feedback priority data TB2, TB3, and TB5, it adopts a separate and timely feedback method.
  • it When performing HARQ feedback on TB2, it simultaneously sends TB2's data on BWP1 and BWP2.
  • HARQ feedback information when performing HARQ feedback on TB3, send the HARQ feedback information of TB3 on BWP1 and BWP2 at the same time; when performing HARQ feedback on TB5, send the HARQ feedback information of TB5 on BWP1 and BWP2 at the same time.
  • the terminal device when the terminal device performs HARQ feedback on the low feedback priority data TB1, TB4 and TB6, it adopts the delayed unified feedback method and sends the HARQ feedback information corresponding to TB1, TB4 and TB6 at n+T+k. . Then, after the retransmission interval ⁇ t, the HARQ feedback information is retransmitted again at time n+T+k+ ⁇ t.
  • the HARQ feedback information corresponding to data with high feedback priority is retransmitted by frequency division retransmission, and HARQ feedback information corresponding to data with low feedback priority is retransmitted by time division. It is ensured that both data with high feedback priority and data with low feedback priority can be successfully received by the second terminal device. Further, since the HARQ feedback information corresponding to the high feedback priority data adopts frequency division retransmission, even if one of the HARQ feedback information is lost and is not successfully received by the second terminal device, the retransmitted HARQ feedback information can be guaranteed to be received by the second terminal device. Second, the terminal device successfully receives, that is, in the case of retransmission, it can also ensure that the data with high feedback priority is fed back earlier than the data with low feedback priority.
  • FIG. 10 is a schematic structural diagram of a data processing device provided by an embodiment of the application. As shown in FIG. 10, the data processing device 100 provided in this embodiment includes a receiving module 101 and a sending module 102.
  • the receiving module 101 is configured to receive first data and second data from at least one second terminal device, where the feedback priority of the first data is higher than the feedback priority of the second data;
  • the sending module 102 is configured to send the first HARQ feedback information corresponding to the first data and the second HARQ feedback information corresponding to the second data to the at least one second terminal device, and the feedback time of the first HARQ feedback information Earlier than the feedback time of the second HARQ feedback information.
  • the receiving module 101 is further configured to receive third data from the at least one second terminal device, and the feedback priority of the third data is the same as the feedback priority of the first data.
  • the receiving time of the third data is later than the receiving time of the first data;
  • the sending module 102 is further configured to send third HARQ feedback information corresponding to the third data to the at least one second terminal device, where the feedback time of the third HARQ feedback information is earlier than the second HARQ feedback The feedback time of the information is later than the feedback time of the first HARQ feedback information.
  • the receiving module 101 is further configured to receive third data from the at least one second terminal device, and the feedback priority of the third data is the same as the feedback priority of the first data;
  • the sending module 102 is further configured to send third HARQ feedback information corresponding to the third data to the at least one second terminal device, where the third HARQ feedback information and the first HARQ feedback information are at the same time Frequency resources.
  • the receiving module 101 is further configured to receive fourth data from the at least one second terminal device, and the feedback priority of the fourth data is the same as the feedback priority of the second data.
  • the receiving time of the fourth data is later than the receiving time of the second data;
  • the sending module 102 is further configured to send fourth HARQ feedback information corresponding to the fourth data to the at least one second terminal device, and the feedback time of the fourth HARQ feedback information is later than the second HARQ feedback Information feedback moment.
  • the receiving module 101 is further configured to receive fourth data from the at least one second terminal device, and the feedback priority of the fourth data is the same as the feedback priority of the second data;
  • the sending module 102 is further configured to send fourth HARQ feedback information corresponding to the fourth data to the at least one second terminal device, where the fourth HARQ feedback information and the second HARQ feedback information are at the same time Frequency resources.
  • the sending module 102 is specifically configured to repeatedly send the first HARQ feedback information and the second HARQ feedback information to the at least one second terminal device, and the repeated sending manner is as follows: One type: frequency division retransmission, time division retransmission, and no retransmission.
  • the repeated transmission manner of the first HARQ feedback information is frequency division retransmission or time division retransmission
  • the repeated transmission manner of the second HARQ feedback information is non-retransmission.
  • the repeated transmission manner of the first HARQ feedback information is frequency division retransmission
  • the repeated transmission manner of the second HARQ feedback information is time division retransmission
  • the data processing apparatus provided in this embodiment can be used to execute the method executed by the first terminal device shown in the foregoing example, and its implementation principles and technical effects are similar, and will not be repeated here in this embodiment.
  • FIG. 11 is a schematic diagram of the hardware structure of a terminal device provided by an embodiment of the application.
  • the terminal device 110 includes a processor 111 and a memory 112;
  • the memory 112 is used to store computer programs
  • the processor 111 is configured to execute a computer program stored in the memory to implement the method executed by the first terminal device in the foregoing embodiment. For details, refer to the relevant description in the foregoing method embodiment.
  • the memory 112 may be independent or integrated with the processor 111.
  • the terminal device 110 may further include:
  • the bus 113 is used to connect the memory 112 and the processor 111.
  • the terminal device provided in this embodiment can be used to execute the method executed by the first terminal device shown in any of the foregoing embodiments, and its implementation principles and technical effects are similar, and details are not described in this embodiment.
  • An embodiment of the present application further provides a storage medium, the storage medium includes a computer program, and the computer program is used to implement the data processing method executed by the first terminal device in the above embodiment.
  • An embodiment of the present application further provides a chip, including: a memory, a processor, and a computer program, the computer program is stored in the memory, and the processor runs the computer program to execute as described in the first terminal device in the above embodiment. The data processing method performed.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division, and there may be other divisions in actual implementation, for example, multiple modules can be combined or integrated. To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or modules, and may be in electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional modules in the various embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules may be integrated into one unit.
  • the units formed by the above modules can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated modules implemented in the form of software functional modules may be stored in a computer readable storage medium.
  • the above-mentioned software function module is stored in a storage medium and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) execute the various embodiments of this application Part of the method.
  • processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated as: DSP), and application specific integrated circuits (English: : Application Specific Integrated Circuit, referred to as ASIC), etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in combination with the application can be directly embodied as being executed and completed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may include a high-speed RAM memory, or may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.
  • NVM non-volatile storage
  • the bus can be an Industry Standard Architecture (ISA) bus, Peripheral Component (PCI) bus, or Extended Industry Standard Architecture (EISA) bus, etc.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus and so on.
  • the buses in the drawings of this application are not limited to only one bus or one type of bus.
  • the above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Except programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable except programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • optical disk any available medium that can be accessed by a general-purpose or special-purpose computer.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and 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 Application Specific Integrated Circuits (ASIC for short).
  • ASIC Application Specific Integrated Circuits
  • the processor and the storage medium may also exist as discrete components in the electronic device or the main control device.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Selon certains modes de réalisation, la présente invention concerne un procédé et un appareil de traitement de données, et un terminal. Un premier dispositif terminal reçoit des premières données et des secondes données provenant d'au moins un second dispositif terminal, la priorité de rétroaction des premières données étant supérieure à la priorité de rétroaction des secondes données ; et le premier dispositif terminal envoie des premières informations de rétroaction HARQ correspondant aux premières données et des secondes informations de rétroaction HARQ correspondant aux secondes données à l'au moins un second dispositif terminal, un moment de rétroaction des premières informations de rétroaction HARQ étant antérieur à un moment de rétroaction des secondes informations de rétroaction HARQ. Il est possible de voir à partir de là que le présent mode de réalisation réalise un moyen pour qu'une extrémité de réception détermine de manière autonome une ressource de rétroaction HARQ ; en outre, des données d'une priorité de rétroaction élevée étant renvoyées avant les données d'une priorité de rétroaction faible sont également assurées, et une transmission efficace de données importantes peut être assurée, ce qui permet d'assurer la sécurité de conduite du véhicule.
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