WO2024016121A1 - Procédé de transmission en liaison latérale, terminal et dispositif de réseau - Google Patents

Procédé de transmission en liaison latérale, terminal et dispositif de réseau Download PDF

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Publication number
WO2024016121A1
WO2024016121A1 PCT/CN2022/106305 CN2022106305W WO2024016121A1 WO 2024016121 A1 WO2024016121 A1 WO 2024016121A1 CN 2022106305 W CN2022106305 W CN 2022106305W WO 2024016121 A1 WO2024016121 A1 WO 2024016121A1
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WIPO (PCT)
Prior art keywords
transmission resources
information
sidelink transmission
sideline
sidelink
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PCT/CN2022/106305
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English (en)
Chinese (zh)
Inventor
赵振山
张世昌
丁伊
马腾
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/106305 priority Critical patent/WO2024016121A1/fr
Publication of WO2024016121A1 publication Critical patent/WO2024016121A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • the present application relates to the field of communications, and more specifically, to a sideline transmission method, terminal and network equipment.
  • SL-U sidelink over unlicensed spectrum
  • terminals need to perform channel listening before using sidelink transmission resources for data transmission. Sidelink transmission can only be performed when the channel is idle. If the terminal's sidelink transmission resources are continuous in the time domain, the terminal can continue to occupy the channel if it successfully performs channel sensing before the first time slot of the sidelink transmission resource.
  • the terminal's sidelink transmission resources are continuous in the time domain, the terminal can continue to occupy the channel if it successfully performs channel sensing before the first time slot of the sidelink transmission resource.
  • Embodiments of the present application provide a sidelink transmission method, including: a first terminal obtains first information, the first information is used to indicate M sidelink transmission resources; the first terminal determines N sidelink transmission blocks; A terminal uses the M sideline transmission resources to send the N sideline transmission blocks to the second terminal; where M and N are integers greater than 1, and M is greater than or equal to N.
  • Embodiments of the present application provide a sidelink transmission method, including: the second terminal receives N sidelink transmission blocks sent by the first terminal to the second terminal using M sidelink transmission resources; where M and N are greater than 1. Integer, M is greater than or equal to N.
  • Embodiments of the present application provide a sidelink transmission method, including: a network device sends first information, the first information is used to indicate M sidelink transmission resources, where the M sidelink transmission resources correspond to N sidelink transmissions block, the M sideline transmission resources are used to transmit the N sideline transmission blocks, where M and N are integers greater than 1, and M is greater than or equal to N.
  • Embodiments of the present application provide a first terminal, including: a receiving unit, configured to obtain first information, the first information being used to indicate M sideline transmission resources; a processing unit, configured to determine N sideline transmission blocks; The sending unit is configured to use the M sideline transmission resources to send the N sideline transmission blocks to the second terminal; where M and N are integers greater than 1, and M is greater than or equal to N.
  • An embodiment of the present application provides a second terminal, including: a receiving unit, configured to receive N sideline transmission blocks sent by the first terminal to the second terminal using M sideline transmission resources; where M and N are greater than 1 is an integer, M is greater than or equal to N.
  • An embodiment of the present application provides a network device, including: a sending unit, configured to send first information, where the first information is used to indicate M sideline transmission resources, where the M sideline transmission resources correspond to N sideline Transmission blocks, the M sideline transmission resources are used to transmit the N sideline transmission blocks, where M and N are integers greater than 1, and M is greater than or equal to N.
  • An embodiment of the present application provides a terminal device, including a processor and a memory.
  • the memory is used to store computer programs, and the processor is used to call and run the computer program stored in the memory, so that the terminal device performs the above-mentioned sideline transmission method.
  • An embodiment of the present application provides a network device, including a processor and a memory.
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs stored in the memory, so that the network device performs the above-mentioned sidelink transmission method.
  • An embodiment of the present application provides a chip for implementing the above sideline transmission method.
  • the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the above-mentioned sideline transmission method.
  • Embodiments of the present application provide a computer-readable storage medium for storing a computer program.
  • the computer program When the computer program is run by a device, it causes the device to perform the above-mentioned side transmission method.
  • An embodiment of the present application provides a computer program product, which includes computer program instructions.
  • the computer program instructions cause the computer to execute the above-mentioned side-by-side transmission method.
  • An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to perform the above sideline transmission method.
  • the embodiment of the present application can transmit side-link transmission blocks through multiple side-link transmission resources, thereby improving transmission efficiency.
  • Figure 1 is a schematic diagram of intra-network communication according to an embodiment of the present application.
  • Figure 2 is a schematic diagram of partial network coverage for sideline communications according to an embodiment of the present application.
  • Figure 3 is a schematic diagram of network coverage outer row communication according to an embodiment of the present application.
  • Figure 4 is a schematic diagram of a central control node according to an embodiment of the present application.
  • Figure 5 is a schematic diagram of unicast according to an embodiment of the present application.
  • Figure 6 is a schematic diagram of multicast according to an embodiment of the present application.
  • Figure 7 is a schematic diagram of broadcasting according to an embodiment of the present application.
  • Figures 8a and 8b are schematic diagrams of the time slot structure in NR-V2X according to embodiments of the present application.
  • Figure 9 is a schematic diagram of lateral feedback according to an embodiment of the present application.
  • Figure 10 is a schematic diagram of a multicast communication sideline feedback schematic diagram according to an embodiment of the present application.
  • Figure 11 is a schematic diagram of the NR-V2X system frame structure according to an embodiment of the present application.
  • Figure 12 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application.
  • Figure 13 is a schematic flow chart of a sidelink transmission method according to another embodiment of the present application.
  • Figure 14 is a schematic flow chart of a sidelink transmission method according to another embodiment of the present application.
  • Figure 15 is a schematic diagram illustrating the correspondence between sideline transmission resources and sideline transmission blocks.
  • Figure 16 is a schematic diagram of valid bits in the NDI information field.
  • Figure 17 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application.
  • Figures 18a to 18d are schematic diagrams of how to determine the correspondence between sideline transmission resources and sideline transmission blocks.
  • Figure 19 is a schematic diagram of frequency domain resources corresponding to sidelink transmission resources between different groups.
  • Figure 20 is a schematic diagram of Example 1 of determining the frequency domain resource correspondence relationship corresponding to the sidelink transmission resource.
  • Figure 21 is a schematic diagram of Example 2 of determining the frequency domain resource correspondence relationship corresponding to the sidelink transmission resource.
  • Figure 22 is a schematic diagram of Example 3 of determining the frequency domain resource correspondence relationship corresponding to the sidelink transmission resource.
  • Figure 23 is a schematic diagram of Example 4 of determining the frequency domain resource correspondence relationship corresponding to the sidelink transmission resource.
  • Figure 24 is a schematic diagram of Example 5 of determining the frequency domain resource correspondence relationship corresponding to the sidelink transmission resource.
  • Figure 25 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application.
  • Figure 26 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application.
  • Figure 27 is a schematic block diagram of a first terminal according to an embodiment of the present application.
  • Figure 28 is a schematic block diagram of a second terminal according to an embodiment of the present application.
  • Figure 29 is a schematic block diagram of a network device according to an embodiment of the present application.
  • Figure 30 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • Figure 31 is a schematic block diagram of a chip according to an embodiment of the present application.
  • Figure 32 is a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi wireless fidelity
  • 5G fifth-generation communication
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA)Network scene.
  • Carrier Aggregation, CA Carrier Aggregation, CA
  • DC Dual Connectivity
  • SA Standalone
  • the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to licensed spectrum , among which, licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
  • the terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • User Equipment User Equipment
  • the terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing unit.
  • ST station
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal.
  • Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
  • the network device may be a device used to communicate with mobile devices.
  • the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA.
  • BTS Base Transceiver Station
  • it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolution base station
  • gNB NR network network equipment
  • the network device may have mobile characteristics, for example, the network device may be a mobile device.
  • the network device can be a satellite or balloon station.
  • the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc.
  • the network device may also be a base station installed on land, water, etc.
  • network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • the small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
  • side-link communication according to the network coverage of the communicating terminal, it can be divided into side-link communication with network coverage, side-link communication with partial network coverage, and side-link communication with network coverage, respectively, as shown in Figure 1, Figure 2, and Figure 3 and Figure 4.
  • Figure 1 In sidelink communication within network coverage, all terminals performing sidelink communication are within the coverage of the same base station. Therefore, the above-mentioned terminals can perform sidelink based on the same sidelink configuration by receiving configuration signaling from the base station. communication.
  • Figure 2 When part of the network covers side-link communication, some terminals performing side-link communication are located within the coverage of the base station. These terminals can receive the configuration signaling of the base station and perform side-link communication according to the configuration of the base station. Terminals located outside the network coverage cannot receive the configuration signaling of the base station. In this case, the terminal outside the network coverage will be determined based on the pre-configuration information and the information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by the terminal located within the network coverage. Side row configuration for side row communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • Figure 3 For side-link communication outside network coverage, all terminals performing side-link communication are located outside the network coverage, and all terminals determine the side-link configuration based on pre-configuration information for side-link communication.
  • Figure 4 For side-line communication with a central control node, multiple terminals form a communication group.
  • the communication group has a central control node, which can also be called a cluster head terminal (Cluster Header, CH).
  • the central control node has at least one of the following functions: responsible for the establishment of communication groups; joining and leaving group members; coordinating resources, allocating sideline transmission resources to other terminals, receiving sideline feedback information from other terminals; communicating with other communication groups Carry out resource coordination and other functions.
  • D2D communication is a side link transmission technology (SL: Sidelink, side link), which uses end-to-end direct communication to communicate with traditional cellular systems through base stations. There are different ways of receiving or sending. Therefore, it has higher spectrum efficiency and lower transmission delay. There are two transmission modes defined in 3GPP: first mode and second mode.
  • the transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station.
  • the base station can dynamically allocate sidelink transmission resources to the terminal, or can allocate semi-static transmission resources to the terminal.
  • the terminal is located within the network coverage, and the network allocates transmission resources for sidelink transmission to the terminal.
  • the terminal selects a resource in the resource pool for data transmission.
  • the terminal is located outside the cell coverage, and the terminal independently selects transmission resources from the preconfigured resource pool for sidelink transmission.
  • the terminal independently selects transmission resources from the resource pool configured in the network for side transmission.
  • unicast, multicast and broadcast transmission methods are introduced.
  • unicast transmission there is only one receiving terminal.
  • unicast transmission is performed between UE1 and UE2.
  • the receiving end is all terminals in a communication group, or all terminals within a certain transmission distance.
  • UE1, UE2, UE3 and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving terminals.
  • the receiving end is any terminal around the sending end terminal.
  • UE1 is the sending end terminal, and the other terminals around it, UE2-UE6, are all receiving end terminals.
  • Figure 8a shows the time slot structure that does not include PSFCH (Physical Sidelink Feedback Channel, physical sidelink feedback channel) in the time slot.
  • Figure 8b shows the time slot structure including PSFCH.
  • PSFCH Physical Sidelink Feedback Channel, physical sidelink feedback channel
  • PSCCH Physical Sidelink Control Channel
  • OFDM Orthogonal Frequency Division Multiplexing, positive Cross-frequency division multiplexing
  • PRBs Physical Resource Blocks
  • PSSCH also starts from the second sidelink symbol of the time slot in the time domain.
  • the last time domain symbol in the time slot is the Guard Period (GP) symbol, and the remaining symbols are mapped to the PSSCH.
  • the first siderow symbol in this time slot is a repetition of the second siderow symbol.
  • the receiving terminal uses the first siderow symbol as an AGC (Automatic Gain Control) symbol. The symbol on this symbol The data is generally not used for data demodulation.
  • PSSCH occupies K sub-channels in the frequency domain, and each sub-channel includes A consecutive PRBs. As shown in Figure 8a.
  • the penultimate and penultimate symbols in the time slot are used for PSFCH channel transmission, and a time domain symbol before the PSFCH channel is used as the GP symbol, as shown in Figure 8b.
  • NR-V2X in order to improve reliability, a sidelink feedback channel is introduced.
  • the unicast and multicast transmission methods in the NR-V2X system support sideline feedback, but the broadcast transmission method does not support sideline feedback.
  • the sending terminal sends sideline data (including PSCCH and PSSCH) to the receiving terminal, and the receiving terminal sends HARQ (Hybrid Automatic Repeat reQuest, Hybrid Automatic Repeat Request) feedback information to the sending terminal.
  • HARQ Hybrid Automatic Repeat reQuest, Hybrid Automatic Repeat Request
  • the sending terminal determines whether retransmission is needed based on the feedback information from the receiving terminal.
  • the HARQ feedback information is carried in the sidelink feedback channel, such as PSFCH.
  • two sideline HARQ feedback methods are introduced, namely, the sideline HARQ feedback method that only feeds back NACK, and the sideline HARQ feedback method that feeds back ACK or NACK.
  • the transmitting end indicates the sidelink HARQ feedback mode of the receiving end in SCI (Sidelink Control Information).
  • the first type of multicast sidelink HARQ feedback method also called NACK-only sidelink feedback method.
  • NACK is sent to the sending UE. If the UE successfully detects the PSSCH, no sidelink HARQ feedback information is sent, and all UEs that need to send NACK use the same feedback resource to send NACK.
  • This sideline HARQ feedback method is usually suitable for connection-less multicast transmission, that is, no communication group is established between UEs.
  • this side-link HARQ feedback method is usually combined with communication distance requirements, that is, only UEs within a certain distance range from the sending-end UE send side-link HARQ feedback information to the sending-end UE, and UEs outside the communication distance range There is no need to send sideline HARQ feedback information.
  • the second type of multicast sidelink HARQ feedback method ACK/NACK sidelink feedback method.
  • connection-based multicast communication a group of UEs forms a communication group, and each UE in the group corresponds to an intra-group identifier. For example, as shown in Figure 10, if a communication group includes 4 UEs, the group size is 4, and the group identifier of each UE corresponds to ID#0, ID#1, ID#2, and ID#3 respectively. Each UE can learn the number of group members and the group identifier of the UE in the group. When a UE sends PSCCH/PSSCH, other UEs in the group are receiving UEs.
  • Each receiving UE decides to feed back ACK or NACK to the sending UE based on the detected status of PSSCH, and each receiving UE uses a different side.
  • Line HARQ feedback resources that is, sideline HARQ feedback is performed through frequency division multiplexing (Frequency Division Multiplexing, FDM) or code division multiplexing (Code Division Multiplexing, CDM).
  • FDM Frequency Division Multiplexing
  • CDM Code Division Multiplexing
  • P 1, 2, 4
  • the feedback information of the PSSCH transmitted in time slots 2, 3, 4, and 5 is all transmitted in time slot 7, so the time slot ⁇ 2, 3, 4, 5 ⁇ can be regarded as a time slot set,
  • the corresponding PSFCH of the PSSCH transmitted in this time slot set is in the same time slot.
  • the minimum time interval between the PSSCH and its corresponding PSFCH can be configured through the resource pool configuration information. As shown in Figure 11, the minimum time interval between the PSSCH and its corresponding PSFCH is 2 time slots.
  • Mode 1 resource allocation methods of Mode 1 (ie, the above-mentioned first mode) and Mode 2 (ie, the above-mentioned second mode) are supported.
  • the terminal independently selects transmission resources from the resource pool for side-link transmission, which is the above-mentioned second mode; in mode 1, the network allocates side-link transmission resources to the terminal, which is the above-mentioned first mode.
  • the network can Dynamic Scheduling (DG) is used to allocate side-link transmission resources to terminals; or the network can allocate Side-link Configuration Grant (SL CG) transmission resources to terminals.
  • DG Dynamic Scheduling
  • SL CG Side-link Configuration Grant
  • the resource allocation method of CG there are mainly two configuration authorization methods: type-1configured grant (the first type of configuration authorization) and type-2configured grant (the second type of configuration authorization)
  • the first type of configuration authorization the network configures sidelink transmission resources for the terminal through RRC (Radio Resource Control) signaling.
  • RRC Radio Resource Control
  • the UE receives the high-level parameters, it can immediately use the configured transmission parameters at the configured time and frequency. Sidelink transmission is performed on the resource.
  • the second type of configuration authorization adopts a two-step resource configuration method, that is, the resource configuration method of RRC signaling and DCI (Downlink Control Information, downlink control information); first, some parameters are configured by RRC signaling, and then the second step is activated by DCI Class configuration authorized transmission, and at the same time configure other transmission resources and transmission parameters including time domain resources, frequency domain resources, etc.
  • the network can deactivate the sidelink configuration authorization through DCI. After the terminal receives the deactivated DCI, it can no longer use the sidelink configuration authorization transmission resources for sidelink transmission.
  • the sidelink configuration authorization resource of the network configuration is associated with a resource pool, that is, the transmission resource of the sidelink configuration authorization is the transmission resource in the resource pool associated with it.
  • Unlicensed spectrum is a spectrum allocated by countries and regions that can be used for radio equipment communication. This spectrum is usually considered a shared spectrum, that is, communication equipment in different communication systems can use the spectrum as long as it meets the regulatory requirements set by the country or region on the spectrum. To use this spectrum, there is no need to apply for an exclusive spectrum authorization from the government.
  • MCOT Maximum channel occupancy time
  • Channel Occupancy Time refers to the length of time that the unlicensed spectrum channel is used for signal transmission after LBT is successful.
  • the signal occupied channel may be discontinuous within this length of time. Among them, the longest one COT cannot exceed 20ms, and the length of time occupied by signal transmission within the COT does not exceed MCOT.
  • Channel occupancy time (gNB-initiated COT) of network equipment i.e. base station: also called COT initiated by network equipment, refers to the channel occupancy time obtained after successful LBT of network equipment.
  • the channel occupation time of the network device can also be used for the UE to perform uplink transmission under certain conditions.
  • UE's channel occupancy time (UE-initiated COT): also called UE-initiated COT, refers to the channel occupancy time obtained after the UE LBT is successful.
  • the channel access method is also called the LBT method, that is, channel access and LBT can be interchanged.
  • Type1 LBT method multi-slot channel detection based on random backoff adjusted by the contention window size. According to the channel access priority p, channel occupation with a length of Tmcot can be initiated.
  • the base station uses the type1 LBT method, in addition to sending its own data , the COT can also be shared with the UE.
  • the UE uses the type 1 LBT method. In addition to sending its own data, the COT can also be shared with the base station.
  • the following table shows the channel access priority and corresponding parameters when the terminal performs Type-1LBT.
  • m p refers to the number of backoff time slots corresponding to the channel access priority p
  • CW p refers to the contention window size corresponding to the channel access priority p
  • CW min,p refers to the minimum value of CW p corresponding to channel access priority p
  • CW max,p refers to the maximum value of CW p corresponding to channel access priority p
  • T mcot,p refers to channel access priority The maximum occupied time length of the channel corresponding to level p.
  • Type 2 is a channel access method based on fixed-length channel monitoring time slots.
  • Type2A LBT mode single time slot detection of 25us (microsecond) channel, channel detection starts at least 25us before data starts to be sent, including at least one 16us detection and one 9us detection, if the channels are all idle, then If the channel is considered to be idle, channel access can be performed.
  • Type2B's LBT method uses a single time slot with a fixed length of 16us for channel detection. If the channel is idle for more than 4us in the last 9us, the channel is considered to be idle.
  • the LBT method of Type2C does not perform channel detection and transmits directly. Because the time difference between this transmission and the previous transmission is less than 16us, it can be considered as the same transmission, but the transmission length does not exceed 584us.
  • the terminal needs to perform data transmission before using the sidelink transmission resources.
  • Channel sensing, or LBT enables sidelink transmission only when the channel is idle. If the terminal's sidelink transmission resources are continuous in the time domain, that is, occupying adjacent time slots, if the terminal's LBT before the first time slot is successful, it can continue to occupy the channel, thereby reducing the number of LBTs and increasing the channel occupancy rate. . Therefore, in the SL-U system, consider supporting sidelink transmission resources based on continuous time domain, such as the resource allocation method of continuous time slots.
  • the terminal autonomously selects multiple resources in consecutive time slots.
  • the network allocates sidelink transmission resources on consecutive time slots to the terminal.
  • Embodiments of the present application can use consecutive time slots to transmit multiple sideline transmission blocks (Transmission Block, TB).
  • Figure 12 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application. This method can optionally be applied to the systems shown in Figures 1 to 7, but is not limited thereto.
  • the method 1200 includes at least part of the following.
  • the first terminal obtains first information, which is used to indicate M sidelink transmission resources;
  • the first terminal determines N sideline transmission blocks
  • the first terminal uses M sideline transmission resources to send N sideline transmission blocks to the second terminal;
  • M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • M is an integer multiple of N.
  • the first terminal may receive first information from the network device.
  • the first information may be used to indicate the M sidelink transmission resources allocated by the network device to the first terminal.
  • the first information is DCI or RRC.
  • the first terminal may also receive first information from other terminals.
  • the first information may be used to indicate the M sideline transmission resources allocated by other terminals to the first terminal.
  • the first information is SCI, MAC. (Media Access Control, Media Access Control) CE (Control Element, Control Unit) or PC5-RRC (PC5 Radio Resource Control, PC5 Radio Resource Management), where the other terminal can be the second terminal, or in addition to the first terminal and A terminal other than the second terminal.
  • the first terminal can also autonomously select M sideline transmission resources and generate the first information based on the M sideline transmission resources.
  • the first information can be used to indicate the M sideline transmission resources, for example, the first One piece of information is SCI, and the first terminal uses the above-mentioned second mode to determine the M sidelink transmission resources.
  • the first terminal may determine N sidelink transmission blocks based on the M sidelink transmission resources indicated by the first information. Then, the first terminal may use the M sidelink transmission resources to send N sidelink transmission blocks to the second terminal.
  • the M sidelink transmission resources may include one or more groups of sidelink transmission resources that are continuous in the time domain, or the time domain of the M sidelink transmission resources is not continuous.
  • the M sidelink transmission resources can transmit one or more sidelink transmission blocks.
  • sideline data, sideline transmission block or sideline data block may represent the same meaning, or may have a corresponding relationship, and the three may be interchanged.
  • the first information indicates that the M sidelink transmission resources include transmission resources for new data transmission; or, the first information indicates that the M sidelink transmission resources include transmission resources for the first transmission of sideline data blocks. Transmission resources; or, the first information indicates that the M sidelink transmission resources only include transmission resources for retransmitting sideline data blocks.
  • the first information indicates four sideline transmission resources, which are used to transmit four sideline transmission blocks, and these four sideline transmission resources are respectively used for the first transmission of these four sideline transmission blocks; or, the first information indicates 4 sideline transmission resources are used to transmit 2 sideline transmission blocks.
  • These 4 sideline transmission resources are used for the first transmission and the first retransmission of these 2 sideline transmission blocks respectively; or, the first information indication
  • Two sideline transmission resources are used to retransmit one sideline transmission block. These two sideline transmission resources are used for two retransmissions of one sideline transmission block.
  • Figure 13 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application. This method can optionally be applied to the systems shown in Figures 1 to 7, but is not limited thereto.
  • the method 1300 includes at least part of the following.
  • the first terminal determines the number of sideline transmission blocks according to the number of sideline transmission resources.
  • this embodiment can be combined with any method step of the above embodiment.
  • the first terminal determines N side row transmission blocks, including: S1310, the first terminal determines N side row transmission blocks according to The number of sidelink transmission resources determines the number of sidelink transmission blocks.
  • the number of sidelink transmission resources includes at least one of the following:
  • the maximum number of sidelink transmission resources that the first information can indicate is the maximum number of sidelink transmission resources that the first information can indicate
  • the first information indicates the number of sidelink transmission resources.
  • the network device or other terminals may allocate sidelink transmission resources to the first terminal through the first information.
  • the first information may be first signaling.
  • the first signaling can be DCI (Downlink Control Information), RRC signaling, SCI, MAC CE or PC5-RRC, etc.
  • the first terminal determines the number of sidelink transmission blocks according to the maximum number of sidelink transmission resources that the network device can indicate through the first information, or the number of sidelink transmission resources that the network device indicates through the first information.
  • the maximum number of side-link transmission resources that can be indicated by the first information may also be referred to as the maximum number of side-link transmission resources that can be allocated by the first information, or may be referred to as the maximum number of side-link transmission resources.
  • the number of sidelink transmission resources indicated by the first information may also be called the actual number of sidelink transmission resources allocated by the first information, etc., or may be simply referred to as the actual number of sidelink transmission resources, etc.
  • the actual number of sidelink transmission resources indicated by the first information is less than or equal to the maximum number of sidelink transmission resources that can be indicated by the first information.
  • the method further includes:
  • the first terminal obtains second information, and the second information is used to determine the maximum number of sidelink transmission resources that can be indicated by the first information.
  • the second information is information in resource pool configuration information. In yet another implementation manner, the second information is determined based on protocol predefinition, preconfiguration information or network configuration information.
  • the maximum number of sidelink transmission resources that the first information can indicate is determined by at least one of the following:
  • the first information is DCI, and the maximum number of sidelink transmission resources that the first information can indicate is determined based on the maximum number of sidelink transmission resources that the DCI can indicate; or,
  • the first information is RRC signaling
  • the maximum number of sidelink transmission resources that the first information can indicate is the maximum number of sidelink transmission resources included in one cycle of the sidelink configuration authorized transmission resources configured according to the RRC signaling. definite; or,
  • the maximum number of side-link transmission resources that can be indicated by the first information is determined based on the maximum number of side-link transmission resources that can be indicated by the SCI.
  • the first information is the SCI
  • the maximum number of side transmission resources that the first information can indicate is determined based on the maximum number of side transmission resources that the SCI can indicate.
  • the first information is DCI and/or RRC signaling. In the DCI or RRC signaling, the same method or the same information field as the SCI is used to indicate sidelink transmission resources. Therefore, the first information can indicate sidelink transmission.
  • the maximum number of resources is determined based on the maximum number of sidelink transmission resources that the SCI can indicate.
  • the number of sidelink transmission resources indicated by the first information includes at least one of the following:
  • the first information is DCI, and the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources indicated by the DCI;
  • the first information is RRC signaling, and the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources included in a sidelink configuration authorization period;
  • the first information is SCI
  • the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources indicated by the SCI.
  • the first information is DCI, it is a resource allocation method based on DCI, and the number of sidelink transmission resources indicated by the network device is the number of sidelink transmission resources indicated by DCI.
  • the first information is RRC signaling, or the first information is DCI and RRC signaling, which is the resource allocation method of side-link configuration authorization (SL CG)
  • the number of side-link transmission resources indicated by the network device through the first information is one The number of sidelink transmission resources included in the sidelink configuration authorization cycle.
  • the first information is SCI
  • the number of side transmission resources is the number of side transmission resources indicated by the SCI, excluding the number of reserved side transmission resources in the next cycle.
  • the number of sidelink transmission resources indicated by the network device may include the number of transmission resources included in a set of time-domain continuous sidelink transmission resources, or may include the number of transmission resources included in multiple sets of time-domain continuous sidelink transmission resources.
  • the amount of resources For example, if the network device allocates 3 groups of time domain continuous sidelink transmission resources through DCI, each group includes transmission resources of 2 consecutive time slots, then the number of sidelink transmission resources allocated by the network equipment is 6 (i.e., multiple groups of time domain The number of transmission resources included in consecutive sidelink transmission resources). For another example, the network device allocates a group of time-domain continuous sidelink transmission resources through DCI. The group includes transmission resources of 2 consecutive time slots. Then the number of sidelink transmission resources allocated by the network equipment is 2 (i.e., a group of time-domain transmission resources). The number of transmission resources included in the domain’s continuous sidelink transmission resources).
  • the method further includes: the first terminal obtaining a first parameter, the first parameter being used to determine the number of sideline transmission blocks.
  • the first parameter does not need to be configured.
  • the number of sidelink transmission blocks can be determined based on the number of sidelink transmission resources. .
  • the first parameter represents the number of sidelink transmission resources corresponding to one sidelink transmission block.
  • the number of sidelink transmission blocks corresponding to the sidelink transmission resources indicated by the network device may be determined according to the first parameter.
  • the first parameter R1 is an integer greater than or equal to 1.
  • One sidelink transmission block corresponds to R1 sideline transmission resources.
  • the multiple sidelink transmission resources transmit the same sidelink transmission block.
  • the value of the first parameter is determined by the first terminal based on at least one of protocol predefinition, preconfiguration information, or network configuration information.
  • the number of sidelink transmission blocks is determined by the first terminal based on the number of sidelink transmission resources indicated by the first information and the first parameter.
  • the number of sidelink transmission blocks is determined by the first terminal according to the maximum number of sidelink transmission resources that can be indicated by the first information and the first parameter.
  • the method further includes: the first terminal determining a maximum number of sideline transmission blocks; wherein the maximum number of sideline transmission blocks is a sideline that the first terminal can indicate based on the first information.
  • the maximum number of transmission resources is determined by this first parameter.
  • the number of resources included in a set of time-domain continuous sidelink transmission resources allocated by the network device to the first terminal is 2, and the number of sidelink transmission blocks is determined to be 1 according to the first parameter R1.
  • the first terminal may determine the maximum number or side number of the corresponding side link transmission blocks according to the maximum number of side line transmission resources that can be indicated by the first information or the actual number of side line transmission resources indicated by the first information.
  • the number of line transmission blocks can support network equipment or other terminals to allocate different amounts of side line transmission resources to the first terminal, thereby improving scheduling flexibility.
  • Figure 14 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application. This method can optionally be applied to the systems shown in Figures 1 to 7, but is not limited thereto.
  • the method 1400 includes at least part of the following.
  • the first terminal determines the information of the NDI information field.
  • the first information includes an NDI (New Data Indicator, new data indication) information field.
  • the method 1400 also includes: S1410 .
  • the first terminal determines the information of the NDI information field.
  • S1410 may be executed before S1210 or after S1210; alternatively, S1410 may be executed before S1220 or after S1220.
  • the DCI when the network device allocates sidelink transmission resources to the first terminal through DCI, the DCI may be DCI used for dynamic scheduling, or it may be DCI used to activate Type-2SL CG, or it may be used to activate Type-2SL CG. DCI for retransmission scheduling.
  • the DCI may include an NDI information field, the number of bits of the NDI information field is N, and N is an integer greater than or equal to 1. If the NDI information field is 1 bit, the first terminal can use the sidelink transmission resources allocated by the DCI to transmit a sidelink transmission block. If the NDI information field is multiple bits, the first terminal may use the sidelink transmission resources allocated by the DCI to transmit multiple sidelink transmission blocks.
  • the RRC signaling may be, for example, configuration signaling used to configure Type-1 sidelink configuration authorized transmission resources.
  • the information in the NDI information field includes at least one of the following:
  • the number of bits in the NDI information field may also be called the maximum number of bits in the NDI information field or the maximum value of the number of bits in the NDI information field.
  • the number of valid bits in the NDI information field may be less than or equal to the number of bits in the NDI information field.
  • the number of bits in the NDI information field is 6, and the number of valid bits in the NDI information field is 6.
  • the number of bits in the NDI information field is 6, and the number of valid bits in the NDI information field is 4.
  • the valid bits in the NDI information field may include bits with valid values among all the bits in the NDI information field.
  • the valid bits of the NDI information field may include some of the bits among all the bits of the NDI information field.
  • the number of bits in the NDI information field is 6, the number of valid bits in the NDI information field is 4, and the valid bits are the lowest 4 bits in the NDI information field.
  • the number of bits in the NDI information field is 6, the number of valid bits in the NDI information field is 3, and the valid bits are the highest 3 bits in the NDI information field.
  • the number of bits in the NDI information field is determined based on at least one of protocol predefinition, preconfiguration information, or network configuration information.
  • the number of bits in the NDI information field is predefined in the protocol.
  • the resource pool configuration information or the sidelink bandwidth part (Bandwidth Part, BWP) configuration information includes indication information, and the indication information is used to indicate the number of bits in the NDI information field.
  • the information in the NDI information field is determined based on the number of sidelink transmission resources and/or the number of sidelink transmission blocks.
  • S1410 may include the first terminal determining the information of the NDI information field according to the number of sidelink transmission resources and/or the number of sidelink transmission blocks.
  • the number of bits in the NDI information field corresponds to the maximum number of sidelink transmission resources that can be indicated by the first information and/or the maximum number of sidelink transmission resources that can be indicated by the first information. Determined by the maximum number of sideline transmission blocks.
  • the first terminal may determine the number of bits in the NDI information field based on the maximum number of sidelink transmission resources that can be indicated by the first information. For example, if the maximum number of sidelink transmission resources is 4, then the number of bits included in the NDI information field is also 4.
  • the first terminal determines the number of bits in the NDI information field according to the maximum number of sidelink transmission blocks that can be transmitted by the sidelink transmission resource indicated by the first information.
  • the maximum number of sidelink transmission blocks that can be transmitted by the sidelink transmission resources indicated by the first information may be the maximum number of sidelink transmission blocks corresponding to the maximum number of sidelink transmission resources indicated by the first information.
  • the number of bits in the NDI information field is determined based on the maximum number of sidelink transmission resources that can be indicated by the first information, including: the number of bits in the NDI information field is determined based on the maximum number of sideline transmission resources that can be indicated by the first information.
  • the maximum number of side-link transmission resources is determined by a second parameter, where the second parameter represents a multiple relationship between the number of side-link transmission resources and the number of bits in the NDI information field.
  • the number of sidelink transmission resources is M
  • the second parameter is R2
  • the maximum number of sidelink transmission resources that can be indicated by the first information there is a corresponding relationship between the maximum number of sidelink transmission resources that can be indicated by the first information and the number of bits in the NDI information field.
  • the number of bits in the NDI information field may be determined based on the maximum number of sidelink transmission resources that can be indicated by the first information and the corresponding relationship.
  • the first terminal needs to determine the number of valid bits in the NDI information field and the corresponding valid bits. .
  • the number of bits in the NDI information field is equal to the ratio between the maximum number of sidelink transmission resources that the first information can indicate and the second parameter.
  • the maximum number of sidelink transmission resources is Mmax
  • the second parameter is R2
  • the number of bits in the NDI information field is determined based on the maximum number of sidelink transmission blocks corresponding to the maximum number of sidelink transmission resources that the first information can indicate, or, the number of bits in the NDI information field
  • the number of bits is determined based on the maximum number of side transmission blocks, including: the maximum number of side transmission blocks is the same as the number of bits in the NDI information field, where the maximum number of side transmission blocks is the same as that indicated by the first information.
  • There is a corresponding relationship between the maximum number of sidelink transmission resources. For example, the maximum number of sideline transport blocks is Tmax, and the number of bits in the NDI information field is Kmax Tmax.
  • S1410 further includes: the first terminal determines the number of effective bits of the NDI information field according to the number of sidelink transmission resources and/or the number of sidelink transmission blocks indicated by the first information. For example, when the number of sideline transmission blocks is less than the maximum number of sideline transmission blocks, the first terminal determines the number of effective bits of the NDI information field according to the number of sideline transmission blocks.
  • the number of side-link transmission blocks is the number of side-link transmission blocks determined according to the number of side-link transmission resources indicated by the first information. For example, the number of side transmission blocks (also called the actual number of side transmission blocks, denoted as N) may be less than the maximum number of side transmission blocks, Tmax.
  • the number of bits in the NDI information field may include the number of valid bits and the number of invalid bits, and the number of bits in the NDI information field may include valid bits and invalid bits.
  • the first terminal decides whether to perform retransmission or new data transmission based on whether the valid bits in the NDI information field are flipped, and the invalid bits (or valid bits) in the NDI information field do not correspond to the sideline transmission blocks, that is, the first terminal The decision to retransmit a sideline transport block or transmit a new sideline transport block is not based on invalid bits (or invalid bits).
  • the first terminal may determine the number of effective bits K of the NDI information field according to the number N of sideline transmission blocks.
  • the number of effective bits K in the NDI information field is less than or equal to the number of bits Kmax in the NDI information field.
  • the valid bits in the NDI information field may correspond to sideline transport blocks one-to-one. Whether a bit in the NDI information field is flipped indicates whether a sidelink transport block corresponding to the bit needs to be retransmitted.
  • S1410 may include: the first terminal determines the valid bits of the NDI information field.
  • the first terminal determines the valid bits of the NDI information field, including: the first terminal determines the lowest K bits or the highest K bits of the NDI information field as the NDI information field. Valid bits, where K represents the number of valid bits in the NDI information field.
  • the first terminal determines the valid bits of the NDI information field, including: when the sidelink transmission resources indicated by the first information only include retransmission resources, the first terminal determines the NDI information field. The bits that are not flipped are used as the valid bits of the NDI information field.
  • the sidelink transmission resources indicated by the first information are only used for retransmission of sidelink transmission blocks, then the valid bits in the NDI information field include bits that are not NDI inverted.
  • the first information includes DCI
  • the NDI information field is an information field included in the DCI.
  • the maximum number of sideline transmission blocks that can be transmitted by the sideline transmission resource indicated by the first information there is a corresponding relationship between the maximum number of sideline transmission blocks that can be transmitted by the sideline transmission resource indicated by the first information and the number of bits in the NDI information field.
  • the number of bits in the NDI information field can be determined based on this correspondence.
  • the first terminal needs to determine the number of valid bits in the NDI information field and the corresponding valid bits.
  • the first terminal determines the number of effective bits in the NDI information field based on the actual number. For example, if the maximum number of sidelink transmission resources allocated by the network device is 4, then the number of bits included in the NDI information field is also 4.
  • the actual number of sidelink transmission resources allocated by the gNB to the first terminal is 2, so it is determined that the number of valid bits in the NDI information field (ie, the number of valid bits) is also 2.
  • the valid bits may be the lowest 2 bits or the highest 2 bits in the NDI information field.
  • the first terminal determines the number of valid bits in the NDI information field based on the actual number. For example, if the maximum number of sidelink transmission resources that the network device gNB can indicate through the first information is 6, then the number of bits included in the NDI information field is 3.
  • the actual number of sidelink transmission resources indicated by the gNB to the first terminal through the first information is 2, and then it is determined that the valid bit of the NDI information field is 1. Specifically, the valid bit is the lowest 1 bit or the highest 1 bit in the NDI information field.
  • the sideline transmission method further includes: the first terminal obtains third information, the third information is used to indicate sideline transmission resources for retransmitting the first sideline data block, the N sideline data The first side row data block is included in the block.
  • the network device allocates sidelink transmission resources to the first terminal through the first information, and the sidelink transmission resources include resources for initial transmission of the first sidelink transmission block.
  • the network device allocates sideline transmission resources to the first terminal through the third information, where the sideline transmission resources include resources for retransmitting the first sideline transmission block.
  • the first side transmission block is included in N side transmission blocks, or the first side transmission block is one or more side transmission blocks among the N side transmission blocks.
  • the first information is, for example, DCI or RRC signaling
  • the third information is, for example, DCI.
  • the third information includes an NDI information field, the bits corresponding to the first side row data block in the NDI information field are not flipped, and the remaining bits in the NDI information field are flipped.
  • the third information indicates X sideline transmission resources, and the X sideline transmission resources are used to retransmit the first sideline data block; where X is less than or equal to M.
  • the third information includes an NDI information field.
  • the bits corresponding to the first side row data block in the NDI information field are not flipped.
  • Bits other than those corresponding to the transport block are flipped.
  • the sidelink transmission resources allocated by the third information include transmission resources for retransmitting the first sideline data block and transmission resources for new data transmission.
  • the number of sidelink transmission resources allocated by the third information is the same as the number of sidelink transmission resources allocated by the third information.
  • the number of sideline transmission resources allocated to a piece of information is equal.
  • the third information includes an NDI information field. The bits corresponding to the first sideline transmission block in the NDI information field are not flipped. The remaining bits in the NDI information field are flipped or NDI information. The remaining bits among the valid bits in the field are flipped except for the bits corresponding to the first side row transport block.
  • the first terminal uses the sidelink transmission resources corresponding to the first sidelink transmission block to retransmit the first sidelink transmission block, and uses the sidelink transmission resources corresponding to the remaining valid bits in the NDI information field to transmit the new sideline transmission block.
  • the maximum number of sidelink transmission resources allocated by the network to the terminal through DCI is 4. If the maximum number of sidelink transmission resources is equal to the number of bits in the NDI information field, the number of bits in the NDI information field is determined to be 4; the network passes the first The DCI dynamically allocates 3 sideline transmission resources to the first terminal. The first terminal determines that the number of valid bits in the NDI information field is 3, and determines that the valid bits are the lowest 3 bits in the NDI information field. The 3 allocated by the first DCI Sideline transmission resources are used to transmit three sideline transmission blocks, including a first sideline transmission block, a second sideline transmission block, and a third sideline transmission block.
  • the network allocates three sideline transmission resources to the terminal through the second DCI, including for The retransmission resources for retransmitting the first sideline transmission block also include transmission resources for transmitting new data.
  • the first of the three valid bits of the NDI information field in the second DCI is not flipped, and the second bit is not flipped. and the third bit is flipped, therefore, the first of the 3 sideline transmission resources in the second DCI is used to retransmit the first sideline transmission block, the second and third sideline transmission Resources are used to transmit new side-link transmission blocks.
  • the sidelink transmission resources indicated by the third information are not used for transmitting new sidelink data blocks.
  • the transmission resources indicated by the third information only include retransmission resources.
  • the sideline transmission resources allocated by the third information only include transmission resources for retransmitting the first sideline data block, and do not include transmission resources for new data transmission.
  • the third information includes an NDI information field, and the NDI information.
  • the bits in the field corresponding to the first sideline transport block are not flipped, and the remaining bits in the NDI information field are flipped (denoted as case 1), or the bits in the NDI information field corresponding to the first sideline transport block are not flipped, Among the valid bits in the NDI information field, the remaining bits except the bits corresponding to the first side row transport block are flipped (denoted as case 2).
  • the first terminal uses the sidelink transmission resource corresponding to the first sidelink transmission block to retransmit the first sidelink transmission block.
  • the maximum number of sidelink transmission resources allocated by the network to the terminal through DCI is 4. If the maximum number of sidelink transmission resources is equal to the number of bits in the NDI information field, the number of bits in the NDI information field is determined to be 4; the network passes the first DCI dynamically allocates 3 sideline transmission resources to the first terminal. The first terminal determines that the number of valid bits in the NDI information field is 3, and determines that the valid bits are the lowest 3 bits in the NDI information field; the 3 allocated by the first DCI Sideline transmission resources are used for the first transmission of three sideline transmission blocks, including the first sideline transmission block (TB#1), the second sideline transmission block (TB#2), and the third sideline transmission block (TB#). 3).
  • the lowest three bits in the NDI information field correspond to the three sideline transmission blocks respectively.
  • the lowest bit in the NDI information field corresponds to TB#3
  • the second to last bit in the NDI information field corresponds to TB#2
  • the third to last bit in the NDI information field corresponds to TB#2.
  • the bit corresponds to TB#1. If the network receives the feedback information corresponding to the three sidelink transmission blocks in the sidelink feedback information reported by the terminal as NACK, ACK, and ACK respectively, the network allocates retransmission resources to the terminal through the second DCI for retransmission of the third sidelink transmission block.
  • the number of sideline transmission resources allocated in the second DCI is 1, the sideline transmission resource is used to retransmit the first sideline transmission block, the NDI information field in the second DCI is the same as TB
  • the value of the bit corresponding to #1 is not flipped, but the value of other bits in the NDI information field is flipped (corresponding to the above situation 1).
  • the value of the NDI information field in the first DCI is [0 0 0 0]
  • the last 3 bits are valid bits, and the first bit is an invalid bit
  • the value of the NDI information field in the second DCI is [1 0 1 1], which corresponds to TB# in the second DCI.
  • the bits in the NDI information field of 1 are not flipped, and the remaining bits are flipped.
  • the value of the bit corresponding to TB#1 in the NDI information field in the second DCI is not inverted, but other bits in the valid bits in the NDI information field are inverted (corresponding to the above situation 2), for example, in the first DCI
  • the value of the NDI information field is [0 0 0 0], where the last 3 bits are valid bits and the first bit is an invalid bit;
  • the value of the NDI information field in the second DCI is [0 0 1 1], that is, in the second DCI, the bits corresponding to the NDI information field of TB#1 are not flipped, and the remaining valid bits are flipped.
  • the first bit corresponds to the invalid bit, and its value remains unchanged.
  • the number of sidelink transmission resources allocated by the network device to the terminal through different DCI may be different.
  • the number of bits in the NDI information field can be determined based on the maximum number of side-link transmission resources allocated by the network.
  • the maximum number of sideline transmission resources that the network device can indicate through the first information is Mmax, and the maximum number of corresponding sideline transmission blocks is Tmax.
  • the number of bits Kmax in the NDI information field is determined based on Mmax or Tmax.
  • the correspondence between sideline transmission resources and sideline transmission blocks can include the following three types:
  • Many-to-many correspondence that is, multiple sideline transmission resources are used to transmit multiple sideline transmission blocks. There is no fixed correspondence between sidelink transmission resources and sidelink transmission blocks.
  • the corresponding relationship between the sidelink transmission resources and the sidelink transmission block may be determined based on the UE implementation, or the sidelink transmission resource corresponding to the sidelink transmission block may be determined based on the third parameter (such as priority) corresponding to the sidelink transmission block.
  • the maximum number of sideline transport blocks is the same as the number of NDI information bits. There is a corresponding relationship between sideline transport blocks and NDI information bits.
  • the number of bits in the NDI information field is 4. And there is a 1-to-1 correspondence between NDI information bits and sideline transport blocks.
  • the side-link transmission blocks and the bits of the NDI information field corresponding to the side-link transmission resources are as shown in Figure 16.
  • the valid bits shown in Figure 16 correspond to the leftmost 2 bits of the NDI.
  • the first terminal may determine the subsequent action to be performed based on whether the NDI information field is flipped.
  • the first terminal can perform at least one of the following steps:
  • the first terminal uses the sideline transmission resources corresponding to the first sideline data to transmit the second sideline data; wherein the second sideline data includes one or more sideline data for which NACK is reported. Further, the first terminal reports ACK to the network for the first sideline data.
  • the first terminal retransmits the first sideline data. If the terminal does not retransmit the first sidelink data, and if the sidelink transmission resource corresponding to the first sidelink data does not perform sidelink transmission, it is possible that the sidelink transmission resource will be discontinuous in the time domain, causing the channel to be used by other sources.
  • the device of the system (such as WiFi system) preempts, thus losing the channel occupation. Further, the first terminal reports ACK to the network device for the first sideline data.
  • Figure 17 is a schematic flow chart of a sidelink transmission method according to an embodiment of the present application. This method can optionally be applied to the systems shown in Figures 1 to 7, but is not limited thereto.
  • the method 1700 includes at least part of the following.
  • the first terminal determines the correspondence between N sideline transmission blocks and M sideline transmission resources.
  • this S1710 can be combined with any method step of the above embodiment.
  • the network device may send first information to the first terminal to allocate M sidelink transmission resources to the first terminal. After receiving the first information sent by the network device, the first terminal can obtain the M sidelink transmission resources indicated by the first information.
  • the M side-link transmission resources correspond to N side-link transmission blocks, and it is necessary to determine the corresponding relationship (or mapping relationship) between the side-link transmission blocks and the side-link transmission resources.
  • the M sidelink transmission resources correspond to the N sidelink transmission blocks one-to-one.
  • the four sideline transmission resources are M1, M2, M3 and M4 respectively, and the four sideline transmission blocks are N1, N2, N3 and N4 respectively, where M1 corresponds to N1, M2 corresponds to N2, M3 corresponds to N3 and M4 corresponds to N4. .
  • the number of the sidelink transmission resources is an integer multiple of the number of the sidelink transmission blocks.
  • the network device allocates M sidelink transmission resources to the first terminal, and the number of sidelink transmission blocks (TB) transmitted by the first terminal using the M sidelink transmission resources is N.
  • the first terminal does not expect that M is not an integer multiple of N, or the first terminal does not expect that M cannot be divisible by N.
  • M/N is an integer.
  • the corresponding relationship between the side-link TB and the side-link transmission resources can be determined according to the following manner 1 and 2.
  • Mode 1 Determine the mapping method between sideline TBs and sideline transmission resources based on protocol predefinition, preconfiguration information or network configuration information.
  • Mode 1 may include at least one of the following first mode, second mode, third mode and fourth mode.
  • the first way to determine the correspondence between the N sidelink transmission blocks and the M sidelink transmission resources is to divide the M sidelink transmission resources into an A1 group of sidelink transmission resources.
  • each group includes N side-link transmission resources
  • the N side-link transmission resources included in each group of side-link transmission resources correspond to the N side-link transmission blocks one-to-one, that is, each side of the N side-link transmission resources
  • the row transmission resources are each used to transmit a side row transmission block.
  • the first group of N side-link transmission resources takes turns to perform the first transmission of N TBs.
  • the second transmission of N TB is performed in turn in the next set of N sidelink transmission resources, and so on.
  • N time slots can be spaced between two adjacent transmissions of a TB. If the ACK feedback of the TB can be received before the next retransmission, the retransmission of the TB can be stopped to reduce system congestion. .
  • the second way to determine the correspondence between the N sidelink transmission blocks and the M sidelink transmission resources is to divide the M sidelink transmission resources into N groups of sidelink transmission resources.
  • each group includes A2 sideline transmission resources, and the A2 sideline transmission resources included in each group of sideline transmission resources are used to transmit one of the N sideline transmission blocks.
  • the N group of sideline transmission blocks The resources correspond to the N sidelink transmission blocks one-to-one.
  • the M sidelink transmission resources include a set of time-domain continuous sidelink transmission resources.
  • M sidelink transmission resources correspond to M consecutive M time slots.
  • the M sidelink transmission resources include L groups of time domain continuous sidelink transmission resources. Each group of time domain continuous sidelink transmission resources includes N sidelink transmission resources. Determine the N sidelink transmission resources.
  • the third way of the correspondence between the transport block and the M sidelink transmission resources is: the N sidelink transmission resources included in each group of time domain continuous sidelink transmission resources are one by one with the N sidelink transmission blocks. Correspondingly, that is, each of the N sidelink transmission resources is used to transmit a sidelink transmission block.
  • the third method can be called the third mapping method, which can specifically include: M sidelink transmission resources including L groups of time domain continuous sidelink transmission resources, each group of time domain continuous sidelink transmission resources It includes N side-link transmission resources, that is, the N side-link transmission resources included in a set of time-domain continuous side-link transmission resources correspond to N side-link transmission blocks one-to-one.
  • Each sidelink transmission block is transmitted L times, and is located in L groups of time domain continuous sidelink transmission resources.
  • Sidelink transmission resources of different groups may be discontinuous.
  • the time slots corresponding to resources N-1 and N may not be continuous time slots
  • the time slots corresponding to resources 2N-1 and 2N may not be continuous time slots.
  • the M sidelink transmission resources include N groups of time domain continuous sidelink transmission resources, and each group of time domain continuous sidelink transmission resources includes P sidelink transmission resources. Determine the N sidelink transmission resources.
  • the fourth way of the correspondence between the transport block and the M sidelink transmission resources is: the P sidelink transmission resources included in each group of time domain continuous sidelink transmission resources are used to transmit the N sidelink transmission blocks.
  • a sidelink transmission block in , the N sets of sidelink transmission resources correspond to the N sidelink transmission blocks one-to-one.
  • M sidelink transmission resources include N groups of time domain continuous sidelink transmission resources, the number of sidelink transmission blocks is also N, and each group of time domain Domain-continuous side-link transmission resources include P side-link transmission resources, that is, the P transmission resources included in a set of time-domain-continuous side-link transmission resources are used to transmit 1 side-link transmission block among the N side-link transmission blocks.
  • L groups of time domain continuous sidelink transmission resources are used to transmit L transmission blocks.
  • Different groups of sidelink transmission resources may be discontinuous.
  • the time slots corresponding to resources P-1 and P may not be continuous time slots, and the time slots corresponding to resources 2P-1 and 2P may not be continuous time slots.
  • time slot indexes in Figures 18a to 18d represent the sequential indexes from low to high in the M time slots corresponding to the M sidelink transmission resources.
  • the TB index represents the sequential index of N TBs from low to high.
  • the sidelink transmission resources within the same group may be continuous in the time domain; the sidelink transmission resources between different groups may be continuous in the time domain, or may not be continuous in the time domain.
  • the first terminal may determine the number of sidelink transmission resources corresponding to the sidelink data according to the third parameter of the sidelink data.
  • the correspondence between the N sideline transmission blocks and the M sideline transmission resources is determined based on a third parameter, and the third parameter is based on QoS (Quality of Service, Quality of Service) determined parameters.
  • QoS Quality of Service
  • PQI PC5 5G QoS Identifier, fifth-generation service quality indicator
  • the third parameter includes at least one of the following parameters: priority, reliability, and delay, where the delay includes PDB (Packet Delay Budget).
  • PDB Packet Delay Budget
  • the third parameter is priority. More transmission resources can be allocated to high-priority data to ensure the transmission performance of the sidelink data.
  • the priority value corresponding to the first side transmission block is lower than the priority value corresponding to the second side transmission block (the lower the priority value, the higher the priority level), that is, the first side transmission block has a higher priority. Therefore, the first terminal uses 3 resources to transmit the first sideline transmission block and 1 resource to transmit the second sideline transmission block.
  • the first terminal may determine the time domain sequence and sum of the sidelink transmission resources corresponding to the sidelink transmission block among the M sidelink transmission resources indicated by the first information according to the third parameter of the sidelink transmission block. /or time domain position.
  • the third parameter is the priority, so the sidelink transmission resources corresponding to the high-priority sidelink transmission blocks are located before the sidelink transmission resources corresponding to the low-priority sidelink transmission blocks.
  • the number of sideline data ie, sideline transmission blocks
  • the priority value corresponding to the first side row data is lower than the priority value corresponding to the second side row data (the lower the priority value, the higher the priority level), that is, the priority of the first side row data higher. Therefore, the first terminal uses 2 sidelink resources to transmit the first sidelink data, and the 2 resources are the two resources with the first position in the time domain; and, the first terminal uses 2 sidelink resources to transmit the second sidelink data. Side row data, and the two resources are the two resources at the lower position in the time domain.
  • the method further includes:
  • the first terminal obtains the first corresponding relationship
  • the first terminal determines the number of sideline transmission resources corresponding to the sideline transmission block according to the first correspondence relationship and the third parameter.
  • the first corresponding relationship is at least one of the following:
  • the method further includes: the first terminal determining, based on the third parameter, the time domain sequence and/or timing of the sidelink transmission resources corresponding to the sidelink transmission blocks among the M sidelink transmission resources. domain location.
  • the third parameter includes a priority, so the sidelink transmission resources corresponding to the high-priority sidelink transmission blocks are located before the sidelink transmission resources corresponding to the low-priority sidelink transmission blocks.
  • the third parameter is priority
  • the first correspondence is the correspondence between priority and the maximum number of transmission resources, as shown in the following table:
  • priority value 1 2 3 4 5 6 7 8 Maximum number of transmission resources 4 4 3 3 2 2 1 1
  • the priority value of sidelink data is 3, according to Table 2, the maximum number of corresponding transmission resources is 3.
  • the number of sidelink transmission resources that can be allocated for this sidelink data is 1, 2 or 3.
  • the third parameter is the priority
  • the first correspondence is the correspondence between the priority threshold and the maximum number of transmission resources, as shown in the following table:
  • Priority cap 2 4 6 8 Maximum number of transmission resources 4 3 2 1
  • the priority range corresponding to the upper limit of priority 2 is [1,2].
  • the priority range corresponding to the upper limit of priority 4 is [3,4].
  • the priority range corresponding to the upper limit of priority 6 is [5,6].
  • the priority range corresponding to the upper limit of priority 8 is [7,8].
  • the priority value of sidelink data is 5, according to Table 3, the maximum number of corresponding transmission resources is 2.
  • the number of sidelink transmission resources that can be allocated for this sidelink data is 1 or 2.
  • the sidelink transport block is carried in the physical sidelink shared channel PSSCH.
  • all or part of the OFDM symbols except the last orthogonal frequency division multiplexing OFDM symbol in a time slot are used to transmit the PSSCH.
  • the first terminal transmits the first data in the GP symbol in the time slot such that the idle duration in the GP symbol is less than or equal to a first duration, the first duration is based on Type 2 (Second Type )
  • the idle duration required for channel access is determined, and the first data is cyclic prefix extension or determined based on data on one OFDM symbol.
  • the first duration is 16us or 25us.
  • the idle time period indicates the time period during which the first terminal does not transmit data within the GP symbol.
  • the first data is a cyclic prefix extension (CP extension) or a repetition of data on a certain OFDM symbol.
  • the first terminal uses all OFDM symbols in the time slot that can be used for side lines to transmit side line data.
  • the first information includes a first information field, and the first information field is used to determine a first HARQ Process Number (HARQ Process Number).
  • HARQ Process Number HARQ Process Number
  • the first information is DCI
  • the first information field is a HARQ information field in the DCI
  • the HARQ information field is used to indicate the first HARQ process number.
  • the first information is RRC signaling
  • the first information field includes a fourth parameter and a fifth parameter in the RRC signaling
  • the fourth parameter and the fifth parameter are used to determine the first A HARQ process number
  • the fourth parameter is used to indicate the HARQ process number offset
  • the fifth parameter is used to indicate the number of HARQ process numbers.
  • the fourth parameter is sl-HARQ-ProcID-offset
  • the fifth parameter is sl-NrOfHARQ-Processes.
  • the first HARQ process number associated with the sidelink transmission resource of each period (or the first sidelink transmission resource of each period) authorized by the sidelink configuration can be determined. For example, determine the first HARQ process number according to the following formula:
  • HARQ Process ID [floor(CURRENT_slot/PeriodicitySL)]modulo sl-NrOfHARQ-Processes+sl-HARQ-ProcID-offset
  • CURRENT_slot represents the logical time slot corresponding to the sidelink transmission resource in each cycle (or the first sidelink transmission resource in each cycle) authorized by the sidelink configuration, which can also be called the current logical time slot;
  • PeriodicitySL It is determined based on the side row configuration authorization cycle. For example:
  • sl-PeriodCG represents the side-link configuration authorization period
  • T' max represents the number of time slots included in an SFN (or DFN) cycle by the resource pool associated with the side-link configuration authorization transmission resources.
  • the method further includes: the first terminal determines a second HARQ process number, the second HARQ process number is determined by the first terminal based on the first HARQ process number and the number of sideline transmission blocks.
  • the sideline HARQ process number is the HARQ process number carried in the SCI.
  • the first terminal determines the second HARQ process number, including: the first terminal determines N second HARQ process numbers according to the number N of the sideline transmission blocks, and each sideline transmission block respectively Corresponds to the second HARQ process number.
  • the first terminal obtains the first information and determines the sideline HARQ process number (recorded as the second HARQ process number) according to the first information field (carrying the first HARQ process number) in the first information and the value of N.
  • the number of second HARQ process numbers is equal to the number N of sidelink transmission blocks.
  • the first terminal may randomly select N HARQ process numbers from unused sideline HARQ process numbers as the N second HARQ process numbers.
  • one first HARQ process number corresponds to N second HARQ process numbers, and the first terminal can determine the correspondence between the first HARQ process number and the N second process numbers.
  • At least the maximum number of sidelink transmission resources, the maximum number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of bits of the NDI information field in the first information that can be indicated by the first information is determined based on protocol predefinition, preconfiguration information or network configuration information.
  • At least the maximum number of sidelink transmission resources, the maximum number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of bits of the NDI information field in the first information that can be indicated by the first information is a second corresponding relationship between the two.
  • At least two of the number of sidelink transmission resources indicated by the first information, the number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of valid bits of the NDI information field in the first information There is a third corresponding relationship between them.
  • At least one of the following information is determined based on protocol predefinition, preconfiguration information or network configuration information: the number of sideline transmission resources indicated by the first information, the number of sideline transmission blocks, the number of second HARQ process numbers, the number of first The number of valid bits included in the NDI information field in signaling.
  • the resource pool configuration information includes indication information.
  • the indication information is used to indicate the number of bits N corresponding to the NDI information field included in the DCI.
  • the indication information is used to indicate the number of sidelink TBs transmitted by the sidelink transmission resources allocated by the network.
  • the indication information is used to indicate the number (or maximum number) of sidelink transmission resources allocated by the network.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • a set of P sidelink transmission resources that are continuous in the time domain means that the P time slots corresponding to the set of sidelink transmission resources are continuous time slots, where P is a positive integer.
  • a set of P time slots included in a set of sidelink transmission resources are consecutive time slots.
  • the P time slots are physical time slots
  • the P physical time slots corresponding to the P sidelink transmission resources are continuous
  • the P sidelink transmission resources correspond to P consecutive logical time slots in the first resource pool.
  • the physical time slots corresponding to these P logical time slots may be discontinuous.
  • a set of P sidelink transmission resources that are continuous in the time domain have the same frequency domain resources.
  • a set of P sidelink transmission resources that are continuous in the time domain have different frequency domain resources.
  • the frequency domain resources between different groups of time domain continuous sidelink transmission resources may be different.
  • the first signaling includes a second information field
  • the second information field is used to indicate M sidelink transmission resources
  • the M sidelink transmission resources include L groups of time domain continuous sidelink transmission resources.
  • Each group of consecutive side-link transmission resources includes P side-link transmission resources.
  • the P time slots corresponding to each set of sidelink transmission resources are consecutive time slots.
  • the consecutive time slots are consecutive time slots in a resource pool.
  • the frequency domain resources corresponding to the continuous sidelink transmission resources in the time domain between different groups can be different, as shown in Figure 19.
  • the first terminal obtains the first signaling and determines the number M of sidelink transmission resources according to the sidelink transmission resources indicated in the second information field in the first signaling.
  • the sidelink transmission method further includes: the first terminal uses M sidelink transmission resources to send N sidelink TBs to the second terminal, each TB corresponding to a second HARQ process number.
  • the sidelink transmission method further includes:
  • the first terminal obtains feedback information from the second terminal, and determines whether N TBs correspond to ACK or NACK based on the feedback information.
  • the sidelink transmission method further includes: the first terminal reporting sidelink feedback information of each TB to the network, that is, ACK or NACK.
  • the sidelink transmission method further includes: the base station obtains sidelink feedback information reported by the first terminal, and performs retransmission scheduling based on the feedback information.
  • the sidelink transmission method further includes: when the network sends the retransmission scheduled DCI, the NDI value in the first information field is not flipped, indicating that its corresponding sidelink TB needs to be retransmitted; The NDI value in one information field is flipped, indicating that a new side row TB is scheduled for transmission.
  • the following examples in the embodiments of this application take the first information as DCI as an example, that is, the network device allocates sidelink transmission resources to the terminal through dynamic scheduling.
  • the embodiments of this application are also applicable to the situation where the network allocates Type-1 or Type-2 SL CG to the terminal; at this time, the network device activates Type-2CG through DCI and allocates side-link transmission resources; or configure side-link transmission through RRC signaling resource.
  • the network may allocate retransmission sidelink transmission resources through DCI.
  • the first parameter R1 is used as an example for explanation.
  • the second parameter R2 can also be used to determine the correspondence between the sideline transmission resource and the sideline transmission block. It is similar to R1 and will not be described again here. .
  • the terminal determines the maximum number of sideline transmission blocks as Tmax.
  • Tmax Mmax.
  • the number of bits included in the NDI information field in the first signaling is determined according to the maximum number of sideline transport blocks. Therefore, the number of bits in the NDI information field is Tmax bits.
  • the number of sidelink transmission blocks determined according to the corresponding relationship is M
  • the number of second HARQ process numbers is M
  • the number of valid information bits in the NDI information field for M is M.
  • the 4 transmission resources may include a set of 4 consecutive sidelink transmission resources in the time domain, or may include multiple sets of time slots.
  • Domain-continuous sidelink transmission resources For example, four transmission resources include two groups of time-domain continuous sidelink transmission resources, and each group of time-domain continuous sidelink transmission resources includes transmission resources of two continuous time slots.
  • the TX UE uses 4 sidelink transmission resources to transmit 4 TB to the RX UE (receiving end). Specifically, the TX UE determines four second HARQ process numbers based on the first HARQ process number, corresponding to HPNS#0, HPNS#1, HPNS#2 and HPNS#3 respectively (for the purpose of distinction, the second HARQ process number is expressed as HPNS (HARQ Process Number SL)).
  • the second HARQ process number has a corresponding relationship with the bits in the NDI information field in the first DCI.
  • the second HARQ process number has a one-to-one correspondence with the bits of the NDI information field from left to right.
  • sideline TBs are transmitted on the four sideline transmission resources allocated by the base station, corresponding to TB#0, TB#1, TB#2 and TB3 respectively.
  • These 4 TBs correspond to the 4 second HARQ process numbers respectively, and the NDI value in the SCI corresponding to each TB is 0.
  • the redundant version RV is repeated in a fixed order. For example, the repetition sequence of the RV version is [0,2,3,1].
  • the RX UE sends 4 TB of sidelink feedback information to the TX UE.
  • This embodiment does not limit the way in which the RX UE feeds back sidelink feedback information to the TX UE.
  • the feedback information of these 4 TBs can be carried through one PSFCH, or through 4 PSFCHs respectively.
  • these 4 PSFCH channels can be located in the same time slot or in different time slots.
  • the TX UE determines the ACK or NACK corresponding to each TB based on the PSFCH detection results, and reports the sidelink feedback information corresponding to each TB to the gNB. Such as reporting through PUCCH or PUSCH.
  • the gNB decides whether to schedule retransmissions for the corresponding TB based on the sidelink feedback information of each TB reported by the TX UE. If the feedback information corresponding to a certain TB is NACK, retransmission scheduling needs to be performed, and the bit value corresponding to the TB in the NDI information field in the DCI is not flipped. As shown in Figure 20, the feedback results of the third TB (ie TB#2) and the fourth TB (ie TB#3) are NACK, then gNB retransmits the third bit and the third bit in the NDI information field in the scheduled DCI. The value of the four bits is not flipped, that is, it still has the value 0.
  • the network can schedule a new TB or not schedule a new TB.
  • the bit value corresponding to the TB is flipped.
  • the feedback results of the first TB (ie TB#0) and the second TB (ie TB#1) are ACK, then gNB retransmits the first bit and the second bit in the NDI information field in the scheduled DCI.
  • the value of the two bits is flipped, that is, the value is 1.
  • TX UE obtains new resource scheduling signaling such as the second DCI.
  • the second DCI is used to schedule 4 sidelink transmission resources, and determines whether to perform new data transmission on the sidelink according to the NDI information field in the second DCI. , or perform data retransmission. Since the first HARQ process number in the second DCI is 0, the TX UE can determine that the corresponding four sideline HARQ process numbers are respectively based on the correspondence between the first HARQ process number and the second HARQ process number.
  • the data is retransmitted on the third and fourth sidelink resources on the sidelink, that is, TB#2 and TB#3 are retransmitted respectively, and their corresponding second HARQ process numbers are HPNS#2 and HPNS#3 respectively.
  • the second DCI sent by the network is only used to allocate retransmission resources and is not used to allocate resources for new data transmission.
  • the bits corresponding to the retransmission TB in the NDI information field in the DCI are not flipped, and the remaining bits are flipped.
  • the network since the network receives the sidelink feedback information reported by the TX UE as [ACK, ACK, NACK, NACK], it needs to allocate retransmission resources to TB#2 and TB#3.
  • DCI is used to allocate 2 sidelink transmission resources for retransmission of TB#2 and TB#3.
  • determining whether the retransmission scheduling DCI includes sidelink transmission resources for new data transmission based on protocol predefinition, preconfiguration information or network configuration information.
  • the first parameter R1 is greater than 1, and there is a many-to-1 correspondence between sideline transmission resources and sideline transmission blocks, that is, multiple sideline transmission resources are used to transmit one sideline transmission block.
  • the second mapping method The number of sidelink transmission resources allocated by the network is M, and the number of sidelink transmission blocks is N.
  • the parameter R1 indicates the number of sidelink transmission resources corresponding to one sidelink transmission block.
  • the terminal determines the maximum number of sideline transmission blocks as Tmax.
  • the number of bits included in the NDI information field in the first signaling is determined according to the maximum number Tmax of sideline transport blocks. Therefore, the number of bits in the NDI information field is Tmax bits.
  • TX UE utilizes 4 sidelink transmission resources to transmit 2 TB to RX UE.
  • the TX UE determines two second HARQ process numbers based on the first HARQ process number, corresponding to HPNS#0 and HPNS#1 respectively (for distinction.
  • the second HARQ process number is expressed as HPNS (HARQ Process Number SL) ).
  • the second HARQ process number has a corresponding relationship with the information bits in the NDI information field in the first DCI.
  • the second HARQ process number corresponds one-to-one from low to high and the information bits in the NDI information field from left to right.
  • 2 TBs are transmitted on the 4 sideline transmission resources allocated by the base station, corresponding to TB#0 and TB#1 respectively.
  • These 2 TBs correspond to the 2 second HARQ process numbers respectively.
  • the redundant version RV is repeated in a fixed order.
  • the repetition sequence of the RV version is [0,2,3,1].
  • the second mapping method mentioned above ie, Figure 18b is used to perform mapping between sideline TBs and sideline transmission resources. Therefore, TB#0 is transmitted on the first and second resources, corresponding to redundancy versions 0 and 2 respectively. TB#1 is transmitted on the third and fourth resources, corresponding to redundancy versions 0 and 2 respectively.
  • the RX UE sends 2 TB of sidelink feedback information to the TX UE.
  • the method in which the RX UE feeds back the sidelink feedback information to the TX UE is not limited.
  • the receiving end feeds back four sideline transmissions respectively, that is, feeds back 4-bit sideline feedback information; or the receiving end feeds back two sideline TBs, that is, feeds back 2-bit sideline feedback information.
  • Figure 21 takes separate feedback for two TBs as an example.
  • the sidelink feedback information fed back by the receiving end can be carried through one PSFCH, or through multiple PSFCHs and each PSFCH carries 1 bit of feedback information. When carried through multiple PSFCHs, multiple PSFCH channels can be located in the same time slot or in different time slots.
  • the TX UE determines whether each TB corresponds to ACK or NACK based on the PSFCH detection results, and reports sidelink feedback information to the gNB. Such as reporting through PUCCH or PUSCH.
  • the TX UE can separately report the sidelink feedback information of each sidelink TB to the network, or separately report the sidelink feedback information corresponding to 4 sidelink transmissions.
  • the TX UE reports the sidelink feedback information of each TB to the network as an example, that is, the TX UE reports 2 bits of sidelink feedback information.
  • the gNB decides whether to schedule retransmissions for the corresponding TB based on the sidelink feedback information of each TB reported by the TX UE. If the feedback information corresponding to a certain TB is NACK, retransmission scheduling is required. The bit value corresponding to this TB in the NDI information field in DCI is not flipped. As shown in Figure 21, the feedback result of the second TB (that is, TB#1) is NACK, then the value of the second bit in the NDI information field in the retransmission scheduling DCI of gNB is not flipped, that is, it is still 0. If the feedback information corresponding to a certain TB is ACK, there is no need to perform retransmission scheduling.
  • the network can schedule a new TB or not, and the bit value corresponding to the TB in the NDI information field in the DCI is flipped.
  • the feedback result of the first TB (that is, TB#0) is ACK
  • the value of the first bit in the NDI information field in the retransmission scheduling DCI of gNB is flipped, that is, the value is 1.
  • TX UE obtains new resource scheduling signaling such as the second DCI.
  • the second DCI is used to schedule 4 sidelink transmission resources, and determines whether to perform new data transmission on the sidelink according to the NDI information field in the second DCI. , or perform data retransmission. Since the first HARQ process number in the second DCI is 0, the first terminal can determine the corresponding two sideline HARQ process numbers based on the correspondence between the first HARQ process number and the second HARQ process number. are HPNS#0 and HPNS#1.
  • the data is retransmitted on the third and fourth sidelink resources on the sidelink, that is, TB#1 is retransmitted, corresponding to
  • the second HARQ process number is HPNS#1
  • the redundancy version RV is 3 and 1 respectively.
  • the second DCI sent by the network is only used to allocate retransmission resources and is not used to allocate resources for new data transmission.
  • the bits corresponding to the retransmission TB in the NDI information field in the DCI are not flipped, and the remaining bits are flipped.
  • the network since the network receives the sidelink feedback information reported by the TX UE as [ACK, NACK], it needs to allocate retransmission resources to TB#1, and the second DCI sent by the network is used to allocate 2 sidelinks. Transmission resources used to retransmit TB#1.
  • determining whether the retransmission scheduling DCI includes sidelink transmission resources for new data transmission based on protocol predefinition, preconfiguration information or network configuration information.
  • the network allocates L groups of time-domain continuous side-link transmission resources to the terminal.
  • Each group of time-domain continuous transmission resources includes P side-link transmission resources; the number of side-link transmission blocks is N.
  • Different continuous transmission resource groups are respectively used for different times of transmission of the P side row TBs.
  • the number of bits in the NDI information field is Tmax bits. If the number of sidelink transmission resources allocated by the network to the terminal is M, including L groups of time domain continuous sidelink transmission resources, each group of time domain continuous sidelink transmission resources includes P resources. The number of sideline transmission blocks determined according to the above third mapping method is P, the number of second HARQ process numbers is P, and the number of valid information bits in the NDI information field is P.
  • the TX UE utilizes 6 sidelink transmission resources to transmit 2 TB to the RX UE. Specifically, the TX UE determines two second HARQ process numbers based on the first HARQ process number, corresponding to HPNS#0 and HPNS#1 respectively (for distinction, the second HARQ process number is expressed as HPNS (HARQ Process Number SL))
  • the second HARQ process number has a corresponding relationship with the information bits in the NDI information field in the first DCI.
  • the second HARQ process number has a one-to-one correspondence with the information bits in the NDI information field from left to right.
  • TX UE uses the 6 sidelink transmission resources allocated by the base station to transmit 2 TBs, corresponding to TB#0 and TB#1 respectively. And for each group of two consecutive sideline transmission resources in the time domain, 2 TB are transmitted respectively. Different sets of time domain continuous transmission resources are used to transmit different retransmissions of these two TBs. For a TB, if multiple transfers occur, the redundant version RVs are in a fixed order. For example, the order of RV versions is [0,2,3,1]. For the first group of time domain continuous transmission resources, these two TBs correspond to the two second HARQ process numbers respectively, and the NDI value in the SCI corresponding to each TB is 0, and the redundancy version is 0.
  • these two TBs correspond to the two second HARQ process numbers respectively, and the NDI value in the SCI corresponding to each TB is 0, and the redundancy version is 2.
  • these two TBs correspond to the two second HARQ process numbers respectively, and the NDI value in the SCI corresponding to each TB is 0, and the redundancy version is 3.
  • the RX UE feeds back 2 TB of side-link feedback information to the TX UE.
  • This embodiment does not limit the way in which the RX UE feeds back the side-link feedback information to the TX UE.
  • the RX UE can feed back PSFCH for each sidelink transmission, or it can feed back PSFCH for two transmissions corresponding to a set of sidelink transmission resources.
  • the feedback information of these two TBs can be carried through one PSFCH, or through two PSFCHs respectively.
  • the two PSFCH channels can be located in the same time slot or in different time slots.
  • the TX UE determines the ACK or NACK corresponding to each TB based on the PSFCH detection results, and reports the sidelink feedback information corresponding to each TB to the gNB. Such as reporting through PUCCH or PUSCH.
  • the gNB decides whether to schedule retransmissions for the corresponding TB based on the sidelink feedback information of each TB reported by the TX UE. If the feedback information corresponding to a certain TB is NACK, retransmission scheduling needs to be performed, and the bit value corresponding to the TB in the NDI information field in the DCI is not flipped. As shown in Figure 22, the feedback result of the second TB (that is, TB#1) is NACK, then the value of the second bit in the NDI information field in the retransmission scheduling DCI of gNB is not flipped, that is, it is still 0. If the feedback information corresponding to a certain TB is ACK, retransmission scheduling is not required.
  • the network can schedule a new TB or not, and the bit value corresponding to the TB in the NDI information field in the DCI is flipped.
  • the feedback result of the first TB (that is, TB#0) is ACK, then the value of the first bit in the NDI information field in the retransmission scheduling DCI by gNB is flipped, that is, the value is 1.
  • TX UE obtains new resource scheduling signaling such as the second DCI.
  • the second DCI is used to schedule 6 sidelink transmission resources.
  • the TX UE determines whether to perform new data transmission on the sidelink link or Perform data retransmission. Since the first HARQ process number in the DCI is 0, the TX UE can determine that the corresponding two sideline HARQ process numbers are HPNS# based on the correspondence between the first HARQ process number and the second HARQ process number. 0.HPNS#1. Since the first bit in the NDI information field in the DCI is flipped, new sidelink data is transmitted on the sidelink link, that is, TB#2 is transmitted, and the corresponding second HARQ process number is HPNS#0.
  • the NDI flip in SCI is used to indicate new data transmission, and the corresponding redundancy version RVs in three consecutive sets of sideline transmission resources are 0, 2, and 3 respectively. Since the second bit in the NDI information field in the DCI is not flipped, data is retransmitted on the sidelink link, that is, TB#1 is retransmitted, and the corresponding second HARQ process number is HPNS#1.
  • the second DCI sent by the network is only used to allocate retransmission resources and is not used to allocate resources for new data transmission.
  • the bits corresponding to the retransmission TB in the NDI information field in the DCI are not flipped, and the remaining bits are flipped.
  • the network since the network receives the sideline feedback information reported by the TX UE as [ACK, NACK], it needs to allocate retransmission resources to TB#1, and the second DCI sent by the network is used to allocate 3 sideline Transmission resources used to retransmit TB#1.
  • determining whether the retransmission scheduling DCI includes sidelink transmission resources for new data transmission based on protocol predefinition, preconfiguration information or network configuration information.
  • the network allocates L groups of time-domain continuous sidelink transmission resources to the terminal, and each group of time-domain continuous transmission resources includes P transmission resources.
  • the number of side row transmission blocks is N.
  • the fourth mapping method mentioned above is adopted, that is, P transmission resources included in a group of time-domain continuous side-link transmission resources are used to transmit 1 side-link transmission block, and L groups of time-domain continuous side-link transmission resources are used to transmit L transmission block.
  • the number of side row transmission blocks N L;
  • the number of bits in the NDI information field is Tmax bits. If the number of side-link transmission resources allocated by the network to the terminal is M, including L groups of time-domain continuous side-link transmission resources, each group of time-domain continuous side-link transmission resources includes P resources, determined according to the fourth mapping method above The number of sideline transmission blocks is L, the number of second HARQ process numbers is L, and the number of valid information bits in the NDI information field is L.
  • the TX UE utilizes 6 sidelink transmission resources to transmit 3 TB to the RX UE. Specifically, the TX UE determines three second HARQ process numbers based on the first HARQ process number, corresponding to HPNS#0, HPNS#1 and HPNS#2 respectively (for distinction, the second HARQ process number is expressed as HPNS (HARQ Process NumberSL)).
  • the second HARQ process number has a corresponding relationship with the information bits in the NDI information field in the first DCI.
  • the second HARQ process number corresponds one-to-one from low to high and the information bits in the NDI information field from left to right.
  • TX UE uses the 6 sidelink transmission resources allocated by the base station to transmit 3 TBs, corresponding to TB#0, TB#1 and TB#2 respectively. And each group of two consecutive sideline transmission resources in the time domain is used to transmit 1 TB, and different groups of continuous transmission resources in the time domain are used to transmit different TBs. For a TB. If multiple transfers occur, the redundant versions of RV are in a fixed order. For example, the order of RV versions is [0,2,3,1].
  • the corresponding second HARQ process number is 0, the NDI value in the SCI is 0, and the redundancy corresponding to the sidelink data transmitted by the two sidelink resources
  • the remaining versions are 0 and 2 respectively.
  • the corresponding second HARQ process number is 1, the NDI value in the SCI is 0, and the redundancy corresponding to the sidelink data transmitted by the two sidelink resources
  • the remaining versions are 0 and 2 respectively.
  • the corresponding second HARQ process number is 2
  • the NDI value in the SCI is 0,
  • the redundancy corresponding to the sidelink data transmitted by the two sidelink resources The remaining versions are 0 and 2 respectively.
  • the RX UE feeds back 3 TB of side-link feedback information to the TX UE.
  • This embodiment does not limit the way in which the RX UE feeds back the side-link feedback information to the TX UE.
  • the RX UE can feed back PSFCH for each sidelink transmission, or it can feed back PSFCH for two transmissions corresponding to a set of sidelink transmission resources.
  • Feedback information can be carried through one PSFCH, or through PSFCHs separately. When carried through PSFCH respectively, multiple PSFCH channels can be located in the same time slot or in different time slots.
  • the TX UE determines the ACK or NACK corresponding to each TB based on the PSFCH detection results, and reports the sidelink feedback information corresponding to each TB to the gNB. Such as reporting through PUCCH or PUSCH.
  • the gNB decides whether to schedule retransmissions for the corresponding TB based on the sidelink feedback information of each TB reported by the TX UE. If the feedback information corresponding to a certain TB is NACK, retransmission scheduling needs to be performed, and the bit value corresponding to the TB in the NDI information field in the DCI is not flipped. As shown in Figure 23, the feedback result of the third TB (that is, TB#2) is NACK, then the value of the third bit in the NDI information field in the retransmission scheduling DCI of gNB is not flipped, that is, it is still 0. If the feedback information corresponding to a certain TB is ACK, there is no need to perform retransmission scheduling.
  • the network can schedule a new TB or not, and the bit value corresponding to the TB in the NDI information field in the DCI is flipped.
  • the feedback results of the first TB (ie TB#0) and the second TB (ie TB#1) are ACK, then gNB retransmits the first bit and the second bit in the NDI information field in the scheduled DCI.
  • the value of the two bits is flipped, that is, the value is 1.
  • TX UE obtains new resource scheduling signaling such as the second DCI, which is used to schedule 6 sidelink transmission resources, and determines whether to perform new data transmission on the sidelink according to the NDI information field in the second DCI. , or perform data retransmission. Since the first HARQ process number in the second DCI is 0, the TX UE can determine that the corresponding three sideline HARQ process numbers are respectively based on the correspondence between the first HARQ process number and the second HARQ process number. HPNS#0, HPNS#1 and HPNS#2.
  • new sidelink data is transmitted on the sidelink, that is, TB#3 is transmitted, using the 3 consecutive sets of data indicated in the second DCI.
  • the redundancy versions RV corresponding to the side-link data transmitted on the two transmission resources are 0 and 2.
  • new sidelink data is transmitted on the sidelink, that is, TB#4 is transmitted, using the 3 consecutive sets of data indicated in the second DCI.
  • the two transmission resources corresponding to the second group of transmission resources in the side-link transmission resources transmit TB#4, which corresponds to HPNS#1.
  • the redundancy versions RV corresponding to the side-link data transmitted on the two transmission resources are 0 and 2 respectively.
  • the sidelink data corresponding to the NDI information bit is transmitted and retransmitted on the sidelink, that is, TB#2 is retransmitted, using the second
  • the two transmission resources corresponding to the third group of three consecutive sets of side-link transmission resources indicated in the DCI transmit TB#2, corresponding to HPNS#2, and the redundancy corresponding to the side-link data transmitted on the two transmission resources.
  • the second DCI sent by the network is only used to allocate retransmission resources and is not used to allocate resources for new data transmission.
  • the bits corresponding to the retransmission TB in the NDI information field in the DCI are not flipped, and the remaining bits are flipped.
  • the network since the network receives the sidelink feedback information reported by the TX UE as [ACK, ACK, NACK], it needs to allocate retransmission resources to TB#2, and the second DCI sent by the network is used to allocate 2 Sidelink transmission resources are used to retransmit TB#2.
  • determining whether the retransmission scheduling DCI includes sidelink transmission resources for new data transmission based on protocol predefinition, preconfiguration information or network configuration information.
  • the sidelink transmission resource corresponding to the sidelink transmission block is determined based on the above method 2.
  • the first parameter R1 is greater than 1, and there is a many-to-many correspondence between sideline transmission resources and sideline transmission blocks, that is, multiple sideline transmission resources are used to transmit multiple sideline transmission blocks.
  • the number of sidelink transmission resources allocated by the network is M.
  • the number of side row transmission blocks is N.
  • the number of sideline transmission blocks and the number of sideline transmission resources corresponding to each sideline transmission block can be determined according to the third parameter of the sideline data.
  • Mmax the maximum number of sidelink transmission resources allocated by the network to the terminal through the first signaling
  • Tmax the maximum number of sidelink transmission blocks allocated by the network to the terminal through the first signaling.
  • R1 is greater than 1
  • the determined number of sideline transmission blocks Tmax Mmax/R1.
  • the number of bits included in the NDI information field in the first signaling is determined according to the maximum number Tmax of sideline transport blocks. Therefore, the number of bits in the NDI information field is Tmax bits.
  • the first parameter R1 2.
  • TX UE utilizes 4 sidelink transmission resources to transmit 2 TB to RX UE.
  • the TX UE determines two second HARQ process numbers based on the first HARQ process number, corresponding to HPNS#0 and HPNS#1 respectively.
  • the second HARQ process number is expressed as HPNS (HARQ Process Number SL) ).
  • the second HARQ process number has a corresponding relationship with the information bits in the NDI information field in the first DCI.
  • the second HARQ process number corresponds one-to-one from low to high and the information bits in the NDI information field from left to right.
  • 2 TBs are transmitted on the 4 sideline transmission resources allocated by the base station, corresponding to TB#0 and TB#1 respectively.
  • These 2 TBs correspond to the 2 second HARQ process numbers respectively.
  • the redundant version RV is repeated in a fixed order.
  • the repetition sequence of the RV version is [0,2,3,1].
  • the priority value corresponding to the first TB is 1, and the priority value corresponding to the second TB is 3.
  • Table 3 determine that the number of transmission resources corresponding to the first TB is 3, and the number of transmission resources corresponding to the second TB is 1.
  • the side transmission resources corresponding to the first TB are located before the side transmission resources corresponding to the second TB. Therefore, the first and TB#0 is transmitted on the second and third resources, corresponding to redundancy versions 0, 2, and 3 respectively.
  • TB#1 is transmitted on the fourth resource, corresponding to redundancy version 0.
  • the RX UE feeds back 2 TB of side-link feedback information to the TX UE.
  • This embodiment does not limit the way in which the RX UE feeds back the side-link feedback information to the TX UE.
  • the receiving end feeds back four sideline transmissions respectively, that is, feeds back 4-bit sideline feedback information; or the receiving end feeds back two sideline TBs, that is, feeds back 2-bit sideline feedback information.
  • feedback for two TBs is taken as an example.
  • the sidelink feedback information fed back by the receiving end can be carried through one PSFCH, or through multiple PSFCHs and each PSFCH carries 1 bit of feedback information. When carried through multiple PSFCHs, multiple PSFCH channels can be located in the same time slot or in different time slots.
  • the TX UE determines whether each TB corresponds to ACK or NACK based on the PSFCH detection results, and reports sidelink feedback information to the gNB. Such as reporting through PUCCH or PUSCH.
  • the TX UE can separately report the sidelink feedback information of each sidelink TB to the network, or separately report the sidelink feedback information corresponding to 4 sidelink transmissions.
  • the TX UE reports the sidelink feedback information of each TB to the network as an example, that is, the TX UE reports 2 bits of sidelink feedback information.
  • the gNB decides whether to schedule retransmissions for the corresponding TB based on the sidelink feedback information of each TB reported by the TX UE. If the feedback information corresponding to a certain TB is NACK, retransmission scheduling needs to be performed, and the bit value corresponding to the TB in the NDI information field in the DCI is not flipped. As shown in Figure 24, the feedback result of the second TB (that is, TB#1) is NACK, then the value of the second bit in the NDI information field in the retransmission scheduling DCI of gNB is not flipped, that is, it is still 0. If the feedback information corresponding to a certain TB is ACK, there is no need to perform retransmission scheduling.
  • the network can schedule a new TB or not, and the bit value corresponding to the TB in the NDI information field in the DCI is flipped.
  • the feedback result of the first TB that is, TB#0
  • the value of the first bit in the NDI information field in the retransmission scheduling DCI of gNB is flipped, that is, the value is 1.
  • TX UE obtains new resource scheduling signaling such as the second DCI.
  • the second DCI is used to schedule 4 sidelink transmission resources.
  • the NDI information field in the DCI it determines whether to perform new data transmission on the sidelink link or Perform data retransmission. Since the first HARQ process number in the DCI is 0, the first terminal can determine that the corresponding two side-line HARQ process numbers are HPNS based on the correspondence between the first HARQ process number and the second HARQ process number. #0, HPNS#1. Since the first bit in the NDI information field in the DCI is flipped, new data is transmitted on the sidelink, that is, TB#2 is transmitted, and the priority value of TB#2 is 5.
  • the retransmission of TB#1 on the sidelink is because the priority value of TB#2 is greater than the priority value of TB#1, that is, TB#2
  • the priority of TB#1 is lower than that of TB#1, so the terminal allocates more transmission resources to TB#1 and less transmission resources to TB#2.
  • the terminal determines to allocate 1 transmission resource, that is, the first transmission resource, to TB#2, and allocate 3 transmission resources to TB#1.
  • the sidelink transmission resource corresponding to TB#1 is located before the sidelink transmission resource corresponding to TB#2.
  • TB#1 is transmitted on the first, second and third transmission resources, that is, TB#1 is retransmitted.
  • the corresponding second HARQ process number is HPNS#1.
  • TB#2 is transmitted on the fourth transmission resource, and the corresponding second HARQ process number is HPNS#0.
  • the second DCI sent by the network is only used to allocate retransmission resources and is not used to allocate resources for new data transmission.
  • the bits corresponding to the retransmission TB in the NDI information field in the DCI are not flipped, and the remaining bits are flipped.
  • the network since the network receives the sidelink feedback information reported by the TX UE as [ACK, NACK], it needs to allocate retransmission resources to TB#1, and the second DCI sent by the network is used to allocate 1 sidelink Transmission resources used to retransmit TB#1.
  • determining whether the retransmission scheduling DCI includes sidelink transmission resources for new data transmission based on protocol predefinition, preconfiguration information or network configuration information.
  • Figure 25 is a schematic flow chart of a sidelink transmission method 2500 according to an embodiment of the present application. The method includes at least part of the following.
  • the second terminal receives N sideline transmission blocks sent by the first terminal to the second terminal using M sideline transmission resources; where M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • the method further includes: the second terminal sending sideline feedback information to the first terminal, where the sideline feedback information is used to determine ACK or NACK corresponding to the N sideline transmission blocks.
  • the method further includes: reporting, at the first terminal, an ACK corresponding to the first sideline transmission block, and/or reporting a NACK corresponding to the second sideline transmission block.
  • the second terminal performs at least one of the following:
  • Figure 26 is a schematic flow chart of a sidelink transmission method 2600 according to an embodiment of the present application. The method includes at least part of the following.
  • the network device sends first information.
  • the first information is used to indicate M sideline transmission resources, where the M sideline transmission resources correspond to N sideline transmission blocks, and the M sideline transmission resources are used to transmit N Side row transmission block, where M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • a set of P sidelink transmission resources that are continuous in the time domain means that the P time slots corresponding to the set of sidelink transmission resources are continuous time slots, where P is a positive integer.
  • the P time slots are physical time slots
  • the P physical time slots corresponding to the P sidelink transmission resources are continuous
  • the P sidelink transmission resources correspond to P consecutive logical time slots in the first resource pool.
  • a set of P sidelink transmission resources that are continuous in the time domain have the same frequency domain resources.
  • the sidelink transport block is carried in the physical sidelink shared channel PSSCH.
  • all or part of the OFDM symbols except the last orthogonal frequency division multiplexing OFDM symbol in a time slot are used to transmit the PSSCH.
  • the first data is transmitted by the first terminal in the GP symbol in the time slot, so that the idle duration in the GP symbol is less than or equal to the first duration, and the first duration is according to the second Type 2
  • the idle duration required for channel access is determined, and the first data is a cyclic prefix extension or a repetition of data on one OFDM symbol.
  • the first information includes a first information field, and the first information field is used to determine the first HARQ process number.
  • the first information is DCI
  • the first information field is a HARQ information field included in the DCI
  • the HARQ information field is used to indicate the first HARQ process number.
  • the first information field when the first information is RRC signaling, the first information field includes the fourth parameter and the fifth parameter in the RRC signaling, and the fourth parameter and the fifth parameter are used to determine The first HARQ process number, wherein the fourth parameter is used to indicate the HARQ process number offset, and the fifth parameter is used to indicate the number of HARQ process numbers.
  • the second HARQ process number is a sideline HARQ process number determined by the first terminal based on the first HARQ process number and the number of sideline transmission blocks.
  • each sidelink transmission block corresponds to one second HARQ process number.
  • the method further includes: the network device sending third information, the third information being used to indicate sideline transmission resources for retransmitting the first sideline data block, and the N sideline data blocks include The first side row data block.
  • the third information includes an NDI information field, the bits corresponding to the first side row data block in the NDI information field are not flipped, and the remaining bits in the NDI information field are flipped.
  • the method further includes that the third information indicates X sideline transmission resources, and the X sideline transmission resources are used to retransmit the first sideline data block; where X is less than or equal to M .
  • the third information includes an NDI information field.
  • the bits corresponding to the first side row data block in the NDI information field are not flipped.
  • the remaining bits except the bits corresponding to the row transport block are flipped.
  • the sidelink transmission resources indicated by the third information are not used to transmit new sidelink data blocks.
  • Figure 27 is a schematic block diagram of the first terminal 2700 according to an embodiment of the present application.
  • the first terminal 2700 may include:
  • the receiving unit 2710 is used to obtain first information, where the first information is used to indicate M sidelink transmission resources;
  • the processing unit 2720 is used to determine N side row transmission blocks
  • the sending unit 2730 is configured to use the M sideline transmission resources to send the N sideline transmission blocks to the second terminal;
  • M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • the processing unit 2720 is further configured to determine the number of side-link transmission blocks according to the number of side-link transmission resources.
  • the number of sidelink transmission resources includes at least one of the following:
  • the maximum number of sidelink transmission resources that the first information can indicate is the maximum number of sidelink transmission resources that the first information can indicate
  • the first information indicates the number of sidelink transmission resources.
  • the receiving unit 2710 is further configured to obtain second information, and the second information is used to determine the maximum number of sidelink transmission resources that can be indicated by the first information.
  • the second information is information in resource pool configuration information.
  • the maximum number of sidelink transmission resources that the first information can indicate is determined by at least one of the following:
  • the first information is DCI, and the maximum number of sidelink transmission resources that the first information can indicate is determined based on the maximum number of sidelink transmission resources that the DCI can indicate; or,
  • the first information is RRC signaling
  • the maximum number of sidelink transmission resources that the first information can indicate is the maximum number of sidelink transmission resources included in one cycle of the sidelink configuration authorized transmission resources configured according to the RRC signaling. definite; or,
  • the maximum number of side-link transmission resources that can be indicated by the first information is determined based on the maximum number of side-link transmission resources that can be indicated by the SCI.
  • the number of sidelink transmission resources indicated by the first information includes at least one of the following:
  • the first information is DCI, and the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources indicated by the DCI;
  • the first information is RRC signaling, and the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources included in a sidelink configuration authorization period;
  • the first information is SCI
  • the number of sidelink transmission resources indicated by the first information is the number of sidelink transmission resources indicated by the SCI.
  • the receiving unit 2710 is further configured to obtain a first parameter, which is used to determine the number of sideline transmission blocks.
  • the first parameter represents the number of sidelink transmission resources corresponding to one sidelink transmission block.
  • the multiple sidelink transmission resources transmit the same sidelink transmission block.
  • the value of the first parameter is determined by the first terminal based on at least one of protocol predefinition, preconfiguration information, or network configuration information.
  • the number of sidelink transmission blocks is determined by the first terminal based on the number of sidelink transmission resources indicated by the first information and the first parameter.
  • the number of sidelink transmission blocks is determined by the first terminal according to the maximum number of sidelink transmission resources that can be indicated by the first information and the first parameter.
  • the processing unit 2720 is also used to determine the maximum number of sideline transmission blocks; wherein the maximum number of sideline transmission blocks is the sideline transmission resource that the first terminal can indicate based on the first information. The maximum number is determined by this first parameter.
  • the first information includes a new data indication NDI information field
  • the processing unit 2720 is further configured to determine the information of the NDI information field according to the number of sideline transmission resources and/or the number of sideline transmission blocks.
  • the information in the NDI information field includes at least one of the following:
  • the processing unit is further configured to determine the information of the NDI information domain according to the number of sideline transmission resources and/or the number of sideline transmission blocks.
  • the number of bits in the NDI information field corresponds to the maximum number of sidelink transmission resources that can be indicated by the first information and/or the maximum number of sidelink transmission resources that can be indicated by the first information. Determined by the maximum number of sideline transmission blocks.
  • the number of bits in the NDI information field is determined based on the maximum number of sidelink transmission resources that can be indicated by the first information, including: the number of bits in the NDI information field is determined based on the maximum number of sideline transmission resources that can be indicated by the first information.
  • the maximum number of side-link transmission resources is determined by a second parameter, where the second parameter represents a multiple relationship between the number of side-link transmission resources and the number of bits in the NDI information field.
  • the number of bits in the NDI information field is equal to the ratio between the maximum number of sidelink transmission resources that the first information can indicate and the second parameter.
  • the number of bits in the NDI information field is determined based on the maximum number of sidelink transmission blocks corresponding to the maximum number of sidelink transmission resources that the first information can indicate, including: the sidelink transmission block The maximum number is the same as the number of bits in the NDI information field.
  • the number of bits in the NDI information field is determined based on at least one of the following: protocol predefinition, preconfiguration information, and network configuration information.
  • the processing unit is further configured to determine the number of effective bits of the NDI information field according to the number of sideline transmission resources and/or the number of sideline transmission blocks indicated by the first information, wherein the sideline The number of side-link transmission blocks is the number of side-link transmission blocks determined according to the number of side-link transmission resources indicated by the first information. For example, when the number of sideline transmission blocks is less than the maximum number of sideline transmission blocks, the first terminal determines the number of effective bits of the NDI information field according to the number of sideline transmission blocks, where the sideline transmission The number of blocks is the number of sidelink transmission blocks determined according to the number of sidelink transmission resources indicated by the first information.
  • the number of valid bits in the NDI information field is equal to the number of sideline transport blocks.
  • the processing unit 2720 is also used to determine the valid bits of the NDI information field.
  • the processing unit 2720 is also configured to determine the lowest K bits or the highest K bits of the NDI information field as valid bits of the NDI information field, where K represents the NDI information field. The number of valid bits.
  • the processing unit is further configured to determine, for the first terminal, the non-flipped bits in the NDI information field as the Valid bits of the NDI information field.
  • the first information includes DCI
  • the NDI information field is an information field included in the DCI.
  • the processing unit 2720 is further configured to determine the correspondence between the N side-link transmission blocks and the M side-link transmission resources.
  • the M sidelink transmission resources correspond to the N sidelink transmission blocks one-to-one.
  • the number of the sidelink transmission resources is an integer multiple of the number of the sidelink transmission blocks.
  • the first way to determine the correspondence between the N sidelink transmission blocks and the M sidelink transmission resources is to divide the M sidelink transmission resources into an A1 group of sidelink transmission resources.
  • each group includes N side-link transmission resources, and the N side-link transmission resources included in each group of side-link transmission resources correspond one-to-one to the N side-link transmission blocks.
  • the second way to determine the correspondence between the N sidelink transmission blocks and the M sidelink transmission resources is to divide the M sidelink transmission resources into N groups of sidelink transmission resources.
  • each group includes A2 sideline transmission resources, and the A2 sideline transmission resources included in each group of sideline transmission resources are used to transmit one of the N sideline transmission blocks.
  • the N group of sideline transmission blocks The resources correspond to the N sidelink transmission blocks one-to-one.
  • the M sidelink transmission resources include a set of time-domain continuous sidelink transmission resources.
  • the M sidelink transmission resources include L groups of time domain continuous sidelink transmission resources. Each group of time domain continuous sidelink transmission resources includes N sidelink transmission resources. Determine the N sidelink transmission resources. The third way of the correspondence between the transport block and the M sidelink transmission resources is: the N sidelink transmission resources included in each group of time domain continuous sidelink transmission resources are one by one with the N sidelink transmission blocks. correspond.
  • the M sidelink transmission resources include N groups of time domain continuous sidelink transmission resources, and each group of time domain continuous sidelink transmission resources includes P sidelink transmission resources. Determine the N sidelink transmission resources.
  • the fourth way of the correspondence between the transport block and the M sidelink transmission resources is: the P sidelink transmission resources included in each group of time domain continuous sidelink transmission resources are used to transmit the N sidelink transmission blocks.
  • a sidelink transmission block in , the N sets of sidelink transmission resources correspond to the N sidelink transmission blocks one-to-one.
  • the corresponding relationship between the N sidelink transmission blocks and the M sidelink transmission resources is determined based on a third parameter, and the third parameter is a parameter determined based on the quality of service QoS.
  • the third parameter includes at least one of the following parameters: priority, reliability, and delay.
  • the receiving unit 2710 is also used to obtain the first correspondence
  • the processing unit 2720 is also configured to determine the number of side-link transmission resources corresponding to the side-link transmission block according to the first correspondence relationship and the third parameter.
  • the first corresponding relationship is at least one of the following:
  • the processing unit 2720 is further configured to determine the time domain sequence and/or time domain position of the side link transmission resources corresponding to the side link transmission blocks in the M side link transmission resources according to the third parameter. .
  • the third parameter includes a priority, so the sidelink transmission resources corresponding to the high-priority sidelink transmission blocks are located before the sidelink transmission resources corresponding to the low-priority sidelink transmission blocks.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • a set of P sidelink transmission resources that are continuous in the time domain means that the P time slots corresponding to the set of sidelink transmission resources are continuous time slots, where P is a positive integer.
  • the P time slots are physical time slots
  • the P physical time slots corresponding to the P sidelink transmission resources are continuous
  • the P sidelink transmission resources correspond to P consecutive logical time slots in the first resource pool.
  • a set of P sidelink transmission resources that are continuous in the time domain have the same frequency domain resources.
  • the sidelink transport block is carried in the physical sidelink shared channel PSSCH.
  • all or part of the OFDM symbols except the last orthogonal frequency division multiplexing OFDM symbol in a time slot are used to transmit the PSSCH.
  • the processing unit 2720 is also configured to transmit the first data in the GP symbol in the time slot, so that the idle duration in the GP symbol is less than or equal to the first duration, the first duration is according to the second category
  • the idle duration required for Type 2 channel access is determined.
  • the first data is cyclic prefix extension or determined based on data on an OFDM symbol.
  • the first information includes a first information field, and the first information field is used to determine the first HARQ process number.
  • the first information is DCI
  • the first information field is a HARQ information field in the DCI
  • the HARQ information field is used to indicate the first HARQ process number.
  • the first information is RRC signaling
  • the first information field includes a fourth parameter and a fifth parameter in the RRC signaling
  • the fourth parameter and the fifth parameter are used to determine the first A HARQ process number
  • the fourth parameter is used to indicate the HARQ process number offset
  • the fifth parameter is used to indicate the number of HARQ process numbers.
  • the processing unit 2720 is further configured to determine a second HARQ process number, which is determined by the first terminal based on the first HARQ process number and the number of sideline transmission blocks. Enter the HARQ process number.
  • the processing unit 2720 is further configured to determine N second HARQ process numbers based on the number N of sideline transmission blocks, and each sideline transmission block corresponds to one second HARQ process number.
  • At least the maximum number of sidelink transmission resources, the maximum number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of bits of the NDI information field in the first information that can be indicated by the first information is determined based on protocol predefinition, preconfiguration information or network configuration information.
  • At least the maximum number of sidelink transmission resources, the maximum number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of bits of the NDI information field in the first information that can be indicated by the first information is a second corresponding relationship between the two.
  • At least two of the number of sidelink transmission resources indicated by the first information, the number of sidelink transmission blocks, the number of second HARQ process numbers, and the number of valid bits of the NDI information field in the first information There is a third corresponding relationship between them.
  • the receiving unit is further configured to obtain third information, the third information being used to indicate sideline transmission resources for retransmitting the first sideline data block, and the N sideline data blocks include the Row data block on one side.
  • the third information includes an NDI information field, the bits corresponding to the first side row data block in the NDI information field are not flipped, and the remaining bits in the NDI information field are flipped.
  • the first terminal further includes: the third information indicates X sideline transmission resources, and the X sideline transmission resources are used to retransmit the first sideline data block; wherein Equal to M.
  • the third information includes an NDI information field.
  • the bits corresponding to the first side row data block in the NDI information field are not flipped.
  • the remaining bits except the bits corresponding to the row transport block are flipped.
  • the sidelink transmission resources indicated by the third information are not used to transmit new sidelink data blocks.
  • the first terminal 2700 in the embodiment of the present application can implement the corresponding functions of the first terminal in the foregoing method embodiment.
  • functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the first terminal 2700 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the first terminal 2700 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module.
  • a module (submodule, unit or component, etc.) is implemented.
  • FIG. 28 is a schematic block diagram of a second terminal 2800 according to an embodiment of the present application.
  • the second terminal 2800 may include:
  • the receiving unit 2810 is configured to receive N sideline transmission blocks sent by the first terminal to the second terminal using M sideline transmission resources; where M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • the second terminal further includes: a sending unit, configured to send sideline feedback information to the first terminal, where the sideline feedback information is used to determine ACK or NACK corresponding to the N sideline transmission blocks. .
  • the receiving unit is also configured to report an ACK corresponding to the first sideline transmission block at the first terminal, and/or report a NACK corresponding to the second sideline transmission block, in the received DCI. If the NDI information field corresponding to the first sideline transmission block is flipped and the NDI information field corresponding to the second sideline transmission block is not flipped, then at least one of the following is performed:
  • the second terminal 2800 in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiment.
  • functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the second terminal 2800 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the second terminal 2800 in the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module.
  • a module (submodule, unit or component, etc.) is implemented.
  • Figure 29 is a schematic block diagram of a network device 2900 according to an embodiment of the present application.
  • the network device 2900 may include:
  • the sending unit 2910 is configured to send first information, where the first information is used to indicate M sidelink transmission resources, where the M sidelink transmission resources correspond to N sidelink transmission blocks, and the M sidelink transmission resources are For transmitting the N side row transmission blocks, M and N are integers greater than 1, and M is greater than or equal to N.
  • M and/or N may also be equal to 1.
  • the M sidelink transmission resources include one or more groups of time-domain continuous sidelink transmission resources.
  • a set of P sidelink transmission resources that are continuous in the time domain means that the P time slots corresponding to the set of sidelink transmission resources are continuous time slots, where P is a positive integer.
  • the P time slots are physical time slots
  • the P physical time slots corresponding to the P sidelink transmission resources are continuous
  • the P sidelink transmission resources correspond to P consecutive logical time slots in the first resource pool.
  • a set of P sidelink transmission resources that are continuous in the time domain have the same frequency domain resources.
  • the sidelink transport block is carried in the physical sidelink shared channel PSSCH.
  • all or part of the OFDM symbols except the last orthogonal frequency division multiplexing OFDM symbol in a time slot are used to transmit the PSSCH.
  • the first data is transmitted by the first terminal in the GP symbol in the time slot, so that the idle duration in the GP symbol is less than or equal to the first duration, and the first duration is according to the second Type 2
  • the idle duration required for channel access is determined, and the first data is a cyclic prefix extension or a repetition of data on one OFDM symbol.
  • the first information includes a first information field, and the first information field is used to determine the first HARQ process number.
  • the first information is DCI
  • the first information field is a HARQ information field included in the DCI
  • the HARQ information field is used to indicate the first HARQ process number.
  • the first information field when the first information is RRC signaling, the first information field includes the fourth parameter and the fifth parameter in the RRC signaling, and the fourth parameter and the fifth parameter are used to determine The first HARQ process number, wherein the fourth parameter is used to indicate the HARQ process number offset, and the fifth parameter is used to indicate the number of HARQ process numbers.
  • the second HARQ process number is a sideline HARQ process number determined by the first terminal based on the first HARQ process number and the number of sideline transmission blocks.
  • each sidelink transmission block corresponds to one second HARQ process number.
  • the network device further includes: the sending unit is further configured to send third information, the third information is used to indicate sideline transmission resources for retransmitting the first sideline data block, the N sideline The first side row data block is included in the data block.
  • the third information includes an NDI information field, the bits corresponding to the first side row data block in the NDI information field are not flipped, and the remaining bits in the NDI information field are flipped.
  • the network device further includes that the third information indicates X sideline transmission resources, and the X sideline transmission resources are used to retransmit the first sideline data block; where X is less than or equal to M.
  • the third information includes an NDI information field.
  • the bits corresponding to the first side row data block in the NDI information field are not flipped.
  • the remaining bits except the bits corresponding to the row transport block are flipped.
  • the sidelink transmission resources indicated by the third information are not used to transmit new sidelink data blocks.
  • the network device 2900 in the embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiment.
  • each module (sub-module, unit or component, etc.) in the network device 2900 please refer to the corresponding description in the above method embodiment, and will not be described again here.
  • the functions described for each module (sub-module, unit or component, etc.) in the network device 2900 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. Module (submodule, unit or component, etc.) implementation.
  • Figure 30 is a schematic structural diagram of a communication device 3000 according to an embodiment of the present application.
  • the communication device 3000 includes a processor 3010, and the processor 3010 can call and run a computer program from the memory, so that the communication device 3000 implements the method in the embodiment of the present application.
  • communication device 3000 may also include memory 3020.
  • the processor 3010 can call and run the computer program from the memory 3020, so that the communication device 3000 implements the method in the embodiment of the present application.
  • the memory 3020 may be a separate device independent of the processor 3010, or may be integrated into the processor 3010.
  • the communication device 3000 may also include a transceiver 3030, and the processor 3010 may control the transceiver 3030 to communicate with other devices. Specifically, the communication device 3000 may send information or data to other devices, or receive information sent by other devices. information or data.
  • the transceiver 3030 may include a transmitter and a receiver.
  • the transceiver 3030 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 3000 can be a network device according to the embodiment of the present application, and the communication device 3000 can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, these processes are not mentioned here. Again.
  • the communication device 3000 may be a terminal device such as a first terminal and/or a second terminal in the embodiment of the present application, and the communication device 3000 may implement various methods in the embodiment of the present application implemented by the terminal device. The corresponding process, for the sake of brevity, will not be repeated here.
  • Figure 31 is a schematic structural diagram of a chip 3100 according to an embodiment of the present application.
  • the chip 3100 includes a processor 3110, and the processor 3110 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • chip 3100 may also include memory 3120.
  • the processor 3110 can call and run the computer program from the memory 3120 to implement the method executed by the terminal device or network device in the embodiment of the present application.
  • the memory 3120 may be a separate device independent of the processor 3110, or may be integrated into the processor 3110.
  • the chip 3100 may also include an input interface 3130.
  • the processor 3110 can control the input interface 3130 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 3100 may also include an output interface 3140.
  • the processor 3110 can control the output interface 3140 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, they will not be described again. .
  • the chip can be applied to the terminal equipment in the embodiment of the present application, such as the first terminal and/or the second terminal, and the chip can implement the corresponding functions implemented by the terminal equipment in each method of the embodiment of the present application.
  • the process for the sake of brevity, will not be repeated here.
  • the chips used in network equipment and terminal equipment can be the same chip or different chips.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • the processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • FPGA off-the-shelf programmable gate array
  • ASIC application specific integrated circuit
  • the above-mentioned general processor may be a microprocessor or any conventional processor.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM).
  • the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • FIG 32 is a schematic block diagram of a communication system 3200 according to an embodiment of the present application.
  • the communication system 3200 includes a first terminal 3210, a second terminal 3220 and a network device 3230.
  • the first terminal 3210 is used to execute the method executed by the first terminal in any of the above method embodiments;
  • the second terminal 3220 is used to execute the method executed by the second terminal in any of the above method embodiments;
  • Network device 3230 is used to execute the method executed by the network device in any of the above method embodiments.
  • the first terminal 3210 and the second terminal 3220 can be used to implement the corresponding functions implemented by the terminal devices in the above method, and the network device 3220 can be used to implement the corresponding functions implemented by the network device in the above method.
  • the network device 3220 can be used to implement the corresponding functions implemented by the network device in the above method.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne le domaine des communications et, plus spécifiquement, un procédé de transmission en liaison latérale, ainsi qu'un terminal et un dispositif de réseau. Le mode de réalisation spécifique comprend les étapes suivantes : un premier terminal acquiert des premières informations, les premières informations étant utilisées pour indiquer M ressources de transmission en liaison latérale ; le premier terminal détermine N blocs de transmission en liaison latérale ; et le premier terminal envoie les N blocs de transmission en liaison latérale à un second terminal en utilisant les M ressources de transmission en liaison latérale, M et N étant des nombres entiers supérieurs à 1 et M étant supérieur ou égal à N. Au moyen des modes de réalisation de la présente demande, des blocs de transmission en liaison latérale peuvent être transmis au moyen d'une pluralité de ressources de transmission en liaison latérale, ce qui permet d'améliorer l'efficacité de transmission.
PCT/CN2022/106305 2022-07-18 2022-07-18 Procédé de transmission en liaison latérale, terminal et dispositif de réseau WO2024016121A1 (fr)

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PCT/CN2022/106305 WO2024016121A1 (fr) 2022-07-18 2022-07-18 Procédé de transmission en liaison latérale, terminal et dispositif de réseau

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021007685A1 (fr) * 2019-07-12 2021-01-21 Oppo广东移动通信有限公司 Procédé de transmission de données de liaison latérale, équipement terminal et dispositif de réseau
WO2021142846A1 (fr) * 2020-01-19 2021-07-22 Oppo广东移动通信有限公司 Procédé et dispositif de communication, et support d'enregistrement
WO2021212371A1 (fr) * 2020-04-22 2021-10-28 Oppo广东移动通信有限公司 Procédé d'attribution de ressources de liaison latérale et dispositif terminal
CN114375064A (zh) * 2019-11-08 2022-04-19 Oppo广东移动通信有限公司 侧行链路的信息上报方法、装置、终端及可读存储介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021007685A1 (fr) * 2019-07-12 2021-01-21 Oppo广东移动通信有限公司 Procédé de transmission de données de liaison latérale, équipement terminal et dispositif de réseau
CN114375064A (zh) * 2019-11-08 2022-04-19 Oppo广东移动通信有限公司 侧行链路的信息上报方法、装置、终端及可读存储介质
WO2021142846A1 (fr) * 2020-01-19 2021-07-22 Oppo广东移动通信有限公司 Procédé et dispositif de communication, et support d'enregistrement
WO2021212371A1 (fr) * 2020-04-22 2021-10-28 Oppo广东移动通信有限公司 Procédé d'attribution de ressources de liaison latérale et dispositif terminal

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