WO2023072302A1 - Procédé et appareil de transmission en liaison latérale (sl), ue et dispositif côté réseau - Google Patents

Procédé et appareil de transmission en liaison latérale (sl), ue et dispositif côté réseau Download PDF

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Publication number
WO2023072302A1
WO2023072302A1 PCT/CN2022/129038 CN2022129038W WO2023072302A1 WO 2023072302 A1 WO2023072302 A1 WO 2023072302A1 CN 2022129038 W CN2022129038 W CN 2022129038W WO 2023072302 A1 WO2023072302 A1 WO 2023072302A1
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Prior art keywords
data packet
target transmission
transmissions
resource selection
target
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PCT/CN2022/129038
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English (en)
Chinese (zh)
Inventor
彭淑燕
纪子超
梁敬
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维沃移动通信有限公司
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Publication of WO2023072302A1 publication Critical patent/WO2023072302A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/115—Grant-free or autonomous transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present application belongs to the technical field of communications, and specifically relates to a method, device, UE and network side equipment for sidelink SL transmission.
  • NACK-based only feedback is supported.
  • the receiving UE may not receive the data packet, so no feedback information will be sent.
  • the sending UE does not receive the feedback information, and considers that the data packet transmission is successful, and does not resend the retransmission data packet, resulting in packet loss. Therefore, the performance of the system will be poor, so consider allowing the UE to perform multiple transmissions/retransmissions to improve the success rate of data packet transmission in the system without considering feedback information (equivalent to UE performing blind retransmission, or It is said that the configuration authorization is configured grant/authorization-free transmission).
  • Embodiments of the present application provide a method, an apparatus, a UE, and a network-side device for sidelink SL transmission, which can solve the problem of low success rate of transmitting SL data packets.
  • a method for sidelink transmission includes: a first UE determines a target transmission parameter according to first configuration information, and the first UE transmits a data packet based on the target transmission parameter; wherein, the above The target transmission parameter includes at least one of the following: the target transmission times of the above-mentioned data packets, and information for determining whether to enable or disable the target transmission mechanism of the data packets.
  • a device for sidelink transmission includes: a determination module and a transmission module, wherein: the determination module is configured to determine target transmission parameters according to the first configuration information; the transmission A module, configured to transmit a data packet based on the target transmission parameter determined by the determination module; wherein the target transmission parameter includes at least one of the following: the target transmission times of the data packet, determining whether to enable or disable all Information about the destination transport mechanism for the packet.
  • a method for sidelink SL transmission includes: a network side device configures a preset rule; wherein, the preset rule is used to determine a target transmission parameter; the target transmission parameter is used
  • the target transmission parameter includes at least one of the following: target transmission times of the data packet, and information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • a network-side device in a fourth aspect, includes: a configuration module: the configuration module is configured to configure preset rules; wherein the preset rules are used to determine target transmission parameters;
  • the target transmission parameter is used to transmit the data packet; the target transmission parameter includes at least one of the following: the target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • a UE in a fifth aspect, includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor. The steps of the method described in the first aspect are realized.
  • a UE including a processor and a communication interface, wherein the processor is configured to determine a target transmission parameter according to first configuration information, and the communication interface is configured to transmit a data packet based on the target transmission parameter ;
  • the target transmission parameter includes at least one of the following: the target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • a network-side device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or instruction is executed by the The processor implements the steps of the method described in the third aspect when executing.
  • a network side device including a processor and a communication interface, wherein the processor is used to configure a preset rule, wherein the preset rule is used to determine a target transmission parameter; the target transmission parameter Used to transmit data packets; the target transmission parameters include at least one of the following: target transmission times of the data packets, and information for determining whether to enable or disable the target transmission mechanism of the data packets.
  • a readable storage medium is provided, and programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the method described in the first aspect are realized, or the steps of the method described in the first aspect are realized, or The steps of the method described in the third aspect.
  • a chip in a tenth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect , or implement the method described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a non-volatile storage medium, and the program/program product is executed by at least one processor to implement the first aspect or the steps of the method for sidelink SL transmission as described in the third aspect.
  • the first UE determines the target transmission parameter according to the first configuration information, and transmits the data packet based on the target transmission parameter; wherein, the target transmission parameter includes at least one of the following: the target transmission times of the data packet , to determine the information to enable or disable the target transport mechanism of the data packet.
  • the target transmission parameter includes at least one of the following: the target transmission times of the data packet , to determine the information to enable or disable the target transport mechanism of the data packet.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is one of the schematic diagrams of a method for sidelink SL transmission provided by an embodiment of the present application
  • FIG. 3 is the second schematic diagram of a method for sidelink SL transmission provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a device for sidelink SL transmission provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network side device provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a hardware structure of a communication device provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a hardware structure of a UE provided in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a hardware structure of a network side device provided by an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies.
  • the following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) communication system.
  • 6th Generation 6th Generation
  • Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, a super mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) equipment, robot, wearable device (Wearable Device) , vehicle equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.) and other terminal-side equipment, wearable devices include: smart watches, smart hands Rings, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets
  • the network side device 12 may be a base station or a core network, where a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN access point, WiFi node, transmission Receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only The base station in the NR system is taken as an example, but the specific type of the base station is not limited.
  • 5G NR a global 5G standard based on a new OFDM air interface design, is also a very important foundation for the next generation of cellular mobile technology. 5G technology will achieve ultra-low latency and high reliability.
  • V2X Vehicle to Everything, Internet of Vehicles
  • LTE Long Term Evolution
  • UE User Equipment
  • LTE sidelink is based on broadcast communication. Although it can be used to support basic security communication of vehicle to everything (V2X), it is not suitable for other more advanced V2X services.
  • the 5G NR (New Radio) system will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, etc., so as to support more comprehensive business types.
  • LTE Long Term Evolution
  • SL sidelinks
  • LTE sidelink is suitable for specific public safety affairs (such as emergency communication in fire places or disaster places such as earthquakes), or vehicle to everything (V2X) communication, etc.
  • Vehicle networking communication includes various services, such as basic safety communication, advanced (automatic) driving, platooning, sensor expansion and so on. Since LTE sidelink only supports broadcast communication, it is mainly used for basic security communication. Other advanced V2X services with strict QoS (Quality of Service) requirements in terms of delay and reliability will be supported by NR sidelink.
  • QoS Quality of Service
  • V2V Vehicle to Vehicle
  • NR V2X defines two resource allocation modes, one is mode1, which schedules resources for the base station; the other is mode2, and the UE itself decides what resources to use for transmission.
  • the resource information may come from the broadcast message of the base station or pre-configured information. If the UE works within the coverage of the base station and has an RRC connection with the base station, the UE can be resource allocation mode1 and/or mode2. If the UE works within the coverage area of the base station but has no RRC connection with the base station, the UE can only work in mode2 resource allocation. If the UE is outside the coverage of the base station, it can only work in mode2 and perform V2X transmission according to pre-configured information.
  • the specific working method is as follows: 1) After the resource selection is triggered, the TX UE first determines the resource selection window, the lower boundary of the resource selection window is T1 time after the resource selection is triggered, and the upper boundary of the resource selection is after the trigger T2 time, where T2 is the value selected in the PDB (packet delay budget) of its TB transmission based on the way UE implements, and T2 is not earlier than T1. 2) Before resource selection, UE needs to determine the resource selection backup Select a resource set (candidate resource set), and compare the Reference Signal Received Power (RSRP) measured on the resource within the resource detection window with the corresponding Reference Signal Received Power threshold (RSRP threshold).
  • RSRP Reference Signal Received Power
  • the resource can be excluded from the set of candidate resources. 3) After the candidate resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. In addition, the UE may reserve transmission resources for the next transmission in this transmission.
  • NR V2X supports a chained resource reservation method, that is, an SCI can reserve the current resource, and in one cycle, it can reserve up to two additional resources, and in the next resource, it can indicate two more Reserve resources. Within the selection window, resources can be continuously reserved in the form of dynamic reservation.
  • R16 two retransmission modes are supported, one is blind retransmission (blind re-transmission), and the other is feedback-based retransmission (HARQ based re-transmission).
  • blind retransmission resource reservation for retransmission is supported, that is, blind retransmission is pre-allocated multiple resources, and the TX UE transmits the TB on all resources pre-allocated to the TB.
  • feedback-based retransmission mode resources are supported for retransmission.
  • resources can be reserved for retransmission on the transmission opportunity of transmitting the same TB.
  • feedback-based retransmission mode for multicast transmission, there are the following two re-feedback retransmission methods in R16:
  • -Opt 1 Feedback based on NACK only. It is mainly used in the groupcast scenario. For the receiving UE, when the reception fails, NACK will be fed back, and if the reception is successful, no information will be fed back.
  • -Opt 2 ACK/NACK based feedback.
  • Feedback-based retransmission is to transmit the TB on one resource. If the UE at the receiving end demodulates successfully, it will feed back ACK, and the UE at the sending end will no longer retransmit the TB; if the UE at the receiving end fails to demodulate, it will feed back NACK. , the UE at the sending end retransmits the TB on the retransmission resources of the TB.
  • the SL QoS information is configured in the RRC parameter, wherein the SL PQI level is indicated in the QoS profile (QoS configuration file).
  • Each PC5 port quality of service indication PQI level includes the corresponding SL priority (SL priority) configuration, SL packet delay budget (data packet delay budget) configuration, and SL packet error rate (data packet error rate) configuration (The smaller the bit error rate requirement, the higher the reliability requirement of the data packet), etc.
  • the configuration file of the SL quality of service is configured in the RRC parameters.
  • the SL-QoS-Profile information element is used to provide a quality of service (QoS) parameter for an SL quality of service flow (QoS flow).
  • FIG. 2 shows a flow chart of the sidelink SL transmission method provided by the embodiment of the present application.
  • the sidelink SL transmission method provided by the embodiment of the present application may include the following steps 201 and 202:
  • Step 201 the first UE determines target transmission parameters according to the first configuration information.
  • the first configuration information includes at least one of the following:
  • the first packet delay budget PDB The first packet delay budget PDB
  • the above-mentioned first PDB includes: the PDB of the above-mentioned data packet and/or the remaining PDB of the above-mentioned data packet.
  • the above-mentioned first information includes at least one of the following:
  • the above priority includes at least one of the following: logical channel priority, logical channel group priority, priority carried in the side link control information SCI, and priority of the above data packet.
  • the first configuration information includes at least one of the following: configuration information of the UE, and configuration information of the resource pool.
  • Step 202 The first UE transmits the data packet based on the above target transmission parameters.
  • the foregoing data packets may be SL data packets.
  • the target transmission parameter includes at least one of the following: target transmission times of the data packet, and information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the target transmission times of the above-mentioned data packets may include any of the following items: total transmission times, retransmission times, blind retransmission times, configured authorization/authorization-free transmission times, within a cycle The number of authorized/authorized-free transmissions configured.
  • the above data packet includes at least one of the following: transport block (Transport Block, TB), SL process, HARQ process.
  • transport block Transport Block, TB
  • SL process HARQ process
  • the above-mentioned target transmission mechanism includes at least one of the following:
  • the transport mechanism for configured grants is configured grants.
  • the above target transmission mechanism may also be referred to as mechanism 1.
  • the above mechanism 1 means the mechanism of ignoring the feedback information in the NACK only scenario; or in other words, the mechanism 1 means the mechanism of ignoring the feedback information in the feeback based re-transmission scenario; or in other words, the mechanism 1 means mix-re-transmission
  • mechanism 1 indicates a mechanism that supports blind retransmission
  • mechanism 1 indicates a mechanism that supports configured grant.
  • the target transmission parameter is determined based on at least one of the following:
  • the above-mentioned priority includes at least one of the following: logical channel priority, logical channel group priority, priority carried in the side link control information SCI, and priority of the above-mentioned data packet; ground identification (i.e., high-level identification), or, layer 1 destination identification (i.e., physical layer identification); the above-mentioned source identification can be layer 2 source identification (i.e., high-level identification), or, layer 1 source identification (i.e., physical layer identification); layer ID).
  • N take the target number of transmissions as an example.
  • the above transmission times N can be at least one of the following parameters configured: resource pool (per resource pool), logical channel (per logical channel), priority (per priority), PQI (per PQI), PFI (per PFI), purpose Land ID (per destination L2ID), source ID (per source ID), UE type (per UE type), power level (per power level), DRX configuration (per DRX configuration), CBR range (CBR range), CR range ( CR range).
  • the foregoing target number of transmissions is configured in an information element (Information Element, IE) of the corresponding radio resource control RRC signaling.
  • Information Element, IE Information Element
  • the IEs may be in a nested relationship, that is to say, the above number of transmissions is determined according to multiple IEs. For example: configure the number of transfers by per resource pool and per logical channel.
  • the above information can be configured for at least one of the following parameters: per resource pool, per logical channel, per priority, per PQI, per PFI, per destination L2 ID, per source ID, per UE type, per power level, per DRX configuration, CBR range, and CR range.
  • the first UE determines the target transmission parameter according to the first configuration information, and transmits the data packet based on the target transmission parameter; wherein, the target transmission parameter includes At least one of the following: target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the target transmission parameter includes At least one of the following: target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • step 201 may include the following steps 201a1 and 201a2:
  • Step 201a1 the first UE acquires a preset rule.
  • Step 201a2 the first UE determines the target transmission parameter according to the first configuration information and the above preset rule.
  • the above preset rules are rules determined according to at least one of the following:
  • the aforementioned preset rules may be predefined by the protocol, or configured by the network side device through RRC signaling, or indicated by MAC CE signaling or DCI, or indicated by PC5-RRC configuration or SCI.
  • pre-definition mentioned in the embodiment of the present application may be a protocol provision.
  • the preset rule is a rule configured on the network side as an example.
  • the network side device may send a first configuration message to the first UE, where the first configuration message includes the foregoing preset rule.
  • the above-mentioned first configuration message may be RRC signaling.
  • the user side link SL transmission method provided in the embodiment of the present application further includes the following step 203a1 and/or step 203a2:
  • Step 203a1 The first UE determines to enable or disable the target transmission mechanism of the data packet based on the target transmission times of the data packet.
  • Step 203a2 The first UE determines the target transmission times of the data packet based on enabling or disabling the target transmission mechanism of the data packet.
  • the target number of transmissions N when the target number of transmissions N is equal to 0, it means that blind retransmission is disabled, or mechanism 1 is disabled, or feedback-based retransmission is disabled.
  • the target number of transmissions N when the target number of transmissions N is equal to 1, it means that blind retransmission is disabled, or mechanism 1 is disabled, or feedback-based retransmission is enabled.
  • the first UE disables the target transmission mechanism, it is determined that the target transmission times N of the data packet is equal to 0 or 1.
  • the above target number of transmissions may be the number of retransmissions, the number of blind retransmissions, or the number of transmissions authorized by configuration.
  • enabling or disabling mechanism 1 defines enabling or disabling mechanism 1, and also define the number of transmissions N; or only define the number of transmissions N, and use a specific value of N to indicate enabling or disabling mechanism 1.
  • the first configuration information includes: HARQ feedback configuration
  • the above step 201 may include the following step 201b:
  • Step 201b When the HARQ feedback configuration is the target configuration, the first UE transmits the data packet according to the above target transmission mechanism.
  • the above target configuration is to enable HARQ feedback.
  • the first UE transmits the data packet according to the target transmission mechanism.
  • the configuration of HARQ feedback is the precondition for enabling or disabling the target transmission mechanism.
  • the above enabling or disabling target transmission mechanism is based on the retransmission scenario of HARQ feedback
  • another case is that the above number of transmissions N is defined based on the retransmission scenario of HARQ feedback.
  • the above-mentioned first configuration information includes: first information
  • the above step 201 may include the following step 201c:
  • Step 201c the first UE determines the target transmission times of the data packet according to the first information and the first mapping relationship.
  • the first mapping relationship includes: a mapping relationship between the first information and the number of transmission times; the first mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the preset rule includes: a first mapping relationship between the first information and the number of transmission times.
  • the foregoing first information includes at least one of the following: priority, PQI, and PFI.
  • the above priority may be a priority value.
  • the above priority is a logical channel priority, and/or a logical channel group priority, and/or a data packet priority, and/or a priority carried in the SCI.
  • the number of transmission times N corresponding to the range of priority (value), PQI, and PFI can be predefined, or configured by the network, or configured by the UE terminal.
  • the data packet priority (value) is p1
  • the number of transmission times of the data packet is N1
  • the data packet priority (value) is p2
  • the number of transmission times of the data packet is N2, ...
  • the data packet priority If the level (value) is pm, then the number of transmission times of the data packet is Nm.
  • the priority range of the data packet is within p1-p2, the number of transmission times of the data packet is N1; if the priority of the data packet is p2-p3, the number of transmission times of the data packet is N2, ...,
  • the level is pm-p(m+1), then the number of transmission times of the data packet is Nm.
  • N, N1, N2, N3, and Nm are all parameters representing the number of transmissions, and may represent any configured value, rather than specifying a certain value.
  • the above first information includes: priority;
  • step 201 may include the following step A1 and/or step A2:
  • Step A1 When the priority is less than the priority threshold, the first UE disables the target transmission mechanism of the data packet.
  • Step A2 When the above priority is greater than or equal to the priority threshold, the first UE enables the target transmission mechanism of the data packet.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the above preset rules include at least one of the following:
  • the destination transmission mechanism of the data packet is disabled.
  • the target transmission mechanism of the data packet is enabled.
  • the above priority threshold is a parameter that is pre-defined, network-configured or UE-configured.
  • the mechanism 1 when the priority value of the data packet is greater than the priority threshold value p1 (ie, the priority threshold value), the mechanism 1 is disabled, or, when the priority value of the data packet is smaller than the priority threshold p1', the mechanism is disabled. Enabling mechanism 1.
  • the priority value of the data packet is greater than the priority threshold value p1, it means that the priority of the data packet is low, and high reliability may not be required during transmission.
  • mechanism 1 when the priority value of the data packet is less than or equal to the priority value threshold p2, mechanism 1 is enabled. In other words, when the priority is greater than the priority threshold p2', mechanism 1 is enabled.
  • p1, p1', p2, p2' are protocol predefined, or network configuration, or UE configuration parameters.
  • the first configuration information includes: a first resource selection mechanism, where the first resource selection mechanism is a resource selection mechanism configured in a resource pool;
  • step 201 may include at least one of the following steps (ie, step B1 to step B5):
  • Step B1 When the first resource selection mechanism includes a random selection resource selection mechanism or a partial sensing based resource selection mechanism, the first UE enables a target transmission mechanism for SL data; or , when the first resource selection mechanism includes a randomly selected resource selection mechanism or a partial detection-based resource selection mechanism, disabling the target transmission mechanism of the data packet.
  • the first resource selection mechanism includes a random selection resource selection mechanism or a partial sensing based resource selection mechanism
  • Step B2 In the case where the first resource selection mechanism includes a resource selection mechanism based on full sensing (full sensing based), the first UE disables the target transmission mechanism of the data packet; or, when the above-mentioned first resource selection mechanism includes a resource selection mechanism based on In the case of the resource selection mechanism of all detections, enable the destination transmission mechanism of the above data packets.
  • Step B3 In the case that the first resource selection mechanism includes a randomly selected resource selection mechanism, the first UE determines that the target number of transmissions of the data packet is the first number of transmissions.
  • Step B4 In the case that the first resource selection mechanism includes a resource selection mechanism based on partial detection, the first UE determines that the target number of transmissions of the data packet is the second number of transmissions.
  • Step B5 When the first resource selection mechanism includes a resource selection mechanism based on all detections, the first UE determines that the target number of transmissions of the data packet is the third number of transmissions.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the target transmission mechanism for SL data is enabled; or, when the above-mentioned first resource selection mechanism includes a randomly selected resource selection mechanism mechanism or resource selection mechanism based on partial detection, disable the target transmission mechanism of the above data packets;
  • the above-mentioned first resource selection mechanism includes a resource selection mechanism based on all detections, disabling the target transmission mechanism of the data packet; or, when the above-mentioned first resource selection mechanism includes a resource selection mechanism based on all detections, Enable the destination transport mechanism for the above packets;
  • the first resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • first resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is the third number of transmissions.
  • the first UE enables or disables mechanism 1 according to a resource selection mode configured in a resource pool.
  • mechanism 1 is enabled if the random selection random resource selection mechanism or the partial sensing based resource selection mechanism is configured in the resource pool.
  • the above-mentioned mechanism 1 (ie, the target transmission mechanism) may be blind retransmission.
  • mechanism 1 is disabled if the full sensing based resource selection mechanism is configured in the resource pool.
  • the first UE determines the target number of transmissions N according to the resource selection mode configured in the resource pool.
  • the target number of transmissions is determined to be N1; if the partial sensing based resource selection mechanism is configured in the resource pool, the target number of transmissions is determined to be N2; if the resource pool is If the full sensing based resource selection mechanism is configured, the target number of transmissions is determined to be N3.
  • N1, N2, N3 are different integers.
  • the first configuration information includes a second resource selection mechanism
  • the second resource selection mechanism is a resource selection mechanism enabled by the first UE, or a resource selection mechanism enabled by the first UE.
  • step 201 may include at least one of the following steps (ie, step C1 to step C5):
  • Step C1 when the above-mentioned second resource selection mechanism includes a randomly selected resource selection mechanism, enable the target transmission mechanism of the data packet;
  • Step C2 When the above-mentioned second resource selection mechanism includes a resource selection mechanism based on partial detection or a resource selection mechanism based on full detection, disabling the target transmission mechanism of the data packet;
  • Step C3 In the case where the above-mentioned second resource selection mechanism includes a randomly selected resource selection mechanism, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • Step C4 In the case that the above-mentioned second resource selection mechanism is a resource selection mechanism based on partial detection, determine that the target number of transmissions of the data packet is the second number of transmissions;
  • Step C5 In the case that the above-mentioned second resource selection mechanism is a resource selection mechanism based on all detections, determine that the target number of transmissions of the data packet is the third number of transmissions.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the second resource selection mechanism of the UE comprises a randomly selected resource selection mechanism, enabling a target transmission mechanism for the data packet
  • the second resource selection mechanism includes a resource selection mechanism based on partial detection or a resource selection mechanism based on all detection, disabling the target transmission mechanism of the data packet;
  • the second resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the second resource selection mechanism is a resource selection mechanism based on partial detection, determine that the target number of transmissions of the data packet is the second number of transmissions;
  • the target number of transmissions of the data packet is the third number of transmissions.
  • the first UE determines to enable/disable the mechanism 1 according to the data packet or the second resource selection mechanism enabled by the UE.
  • mechanism 1 if the data packet or the first UE uses partial sensing based resource selection or full sensing based resource selection, mechanism 1 is disabled, so that the UE can guarantee the PRR performance during detection, and can guarantee the performance. (It should be noted that this example is based on non-NACK only scenarios)
  • the first UE determines the target number of transmissions according to the data packet or the resource selection mechanism enabled by the UE.
  • the data packet or the first UE uses a random selection selection mechanism, determine the target number of transmissions to be N1; if the data packet/UE uses a partial sensing based resource selection mechanism, then determine the target number of transmissions to be N2; if the data packet Or the first UE uses the full sensing based resource selection mechanism, and then determines that the target number of transmissions is N3.
  • N1, N2, and N3 are different integers.
  • the above-mentioned first configuration information includes a first PDB
  • step 201 may include at least one of the following steps (ie, step D1 to step D3):
  • Step D1 When the first PDB is smaller than the preset PDB threshold, the first UE enables the target transmission mechanism of the data packet.
  • Step D2 When the first PDB is greater than or equal to the preset PDB threshold, the first UE disables the target transmission mechanism of the data packet.
  • Step D3 When the first PDB is within the preset PDB range, the first UE determines that the target number of transmissions of the data packet is the first number of transmissions.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the target number of transmissions of the data packet is the first number of transmissions.
  • the first UE enables or disables mechanism 1 according to the PDB or remaining PDB of the data packet.
  • mechanism 1 when the remaining PDB or PDB of the data packet is less than the preset PDB_1, mechanism 1 is enabled; when the remaining PDB or PDB of the data packet is greater than or equal to the preset PDB_1, mechanism 1 is disabled.
  • the first UE determines the number of transmissions (that is, the target number of transmissions) according to the PDB or the remaining PDB of the data packet.
  • the above-mentioned first configuration information includes CBR
  • step 201 may include at least one of the following steps (ie, step E1 to step E3):
  • Step E1 When the CBR of the first UE is within a preset CBR range, determine that the target number of transmissions of the data packet is the first number of transmissions.
  • Step E2 When the above CBR is less than or equal to the preset CBR threshold, enable the destination transmission mechanism of the data packet.
  • Step E3 When the above CBR is greater than the preset CBR threshold, disable the destination transmission mechanism of the data packet.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the target transmission mechanism of the data packet is disabled.
  • the first UE determines the number of data packet transmissions according to the CBR measurement result.
  • the CBR measurement result is within the preset CBR range 1, it is determined that the number of data packet transmissions is N1, and then it is determined that the number of data packet transmissions is N1.
  • the preset CBR range 1 may include any of the following: a preset maximum value, a preset minimum value, and a range formed by a preset maximum value and a preset minimum value. That is, the preset range in this embodiment of the present application may be a configuration of a minimum value, or a configuration of a maximum value, or a configuration of a maximum value plus a minimum value. That is, there can be only an upper boundary, only a lower boundary, or an upper boundary and a lower boundary.
  • the foregoing CBR range may include one or more, corresponding to one or more transmission times.
  • n and n are positive integers, and m and n may be the same or different.
  • the first UE enables or disables mechanism 1 according to the CBR measurement result.
  • the mechanism 1 if the CBR measurement result is less than or equal to the preset value CBR_thresh 1, the mechanism 1 is enabled; if the CBR measurement result is greater than the preset value CBR_thresh 1, the mechanism 1 is disabled.
  • the CBR measurement result is greater than the preset value CBR_thresh 1, it means that the system is congested. When the system is congested, it means that the resources are insufficient. If the blind retransmission is repeated in this case, the system will be more congested and the system efficiency will be low. , therefore, when the CBR measurement result is less than or equal to the preset value CBR_thresh 1, the blind retransmission mechanism can be disabled, thereby improving system efficiency.
  • the first configuration information includes CR
  • step 201 may include at least one of the following steps (ie, step F1 to step F3):
  • Step F1 When the CR of the first UE is within a preset CR range, determine that the target number of transmissions of the data packet is the first number of transmissions.
  • Step F2 When the above CR is less than or equal to the preset CR threshold, enable the target transmission mechanism of the data packet.
  • Step F3 When the above CR is greater than the preset CR threshold, disable the target transmission mechanism of the data packet.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the CR of the UE When the CR of the UE is within the preset CR range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the target transmission mechanism of the data packet is disabled.
  • the first UE determines the number of transmission times of the data packet according to the CR measurement result.
  • the CR measurement result is within the preset CR range 1, it is determined that the number of transmission times of the data packet is N1, and then it is determined that the number of transmission times of the data packet is N1.
  • the preset CR range 1 may include any of the following: a preset maximum value, a preset minimum value, and a range formed by a preset maximum value and a preset minimum value. That is, the preset range in this embodiment of the present application may be a configuration of a minimum value, or a configuration of a maximum value, or a configuration of a maximum value plus a minimum value. That is, there can be only an upper boundary, only a lower boundary, or an upper boundary and a lower boundary.
  • the foregoing CR range may include one or more, corresponding to one or more transmission times.
  • n and n are positive integers, and m and n may be the same or different.
  • the first UE enables or disables mechanism 1 according to the CR measurement result.
  • the mechanism 1 if the CR measurement result is less than or equal to the preset value CR_thresh 1, the mechanism 1 is enabled; if the CR measurement result is greater than the preset value CR_thresh 1, the mechanism 1 is disabled.
  • the above-mentioned first configuration information includes configuration information of DRX configuration
  • step 201 may include at least one of the following steps (ie, step G1 to step G5):
  • Step G1 When the above DRX configuration is the first DRX configuration, the first UE enables the target transmission mechanism of the data packet.
  • Step G2 When the above DRX configuration is the second DRX configuration, the first UE disables the target transmission mechanism of the data packet.
  • Step G3 In the case that the DRX cycle in the above configuration information is within the first preset range, the first UE determines that the target number of transmissions of the data packet is the first number of transmissions.
  • Step G4 When the DRX time in the DRX configuration information is within the second preset range, the first UE determines that the target transmission times of the data packet is the second transmission times.
  • Step G5 When the DRX time ratio in the above DRX configuration information is within a third preset range, the first UE determines that the target number of transmissions of the data packet is the third number of transmissions.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the DRX cycle in the above DRX configuration information is within the first preset range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the target number of transmissions of the data packet is the third number of transmissions.
  • the DRX time includes at least one of the following: on duration, off duration; the first DRX configuration is different from the second DRX configuration.
  • the first UE enables or disables mechanism 1 according to DRX configuration information.
  • the UE if the DRX configuration is DRX configuration 1, the UE enables mechanism 1; if the DRX configuration is DRX configuration 2, the UE disables mechanism 1.
  • DRX configuration 1 and DRX configuration 2 are DRX configurations with different configuration parameters.
  • the first UE determines the target transmission times of the data packet according to the DRX configuration.
  • the DRX cycle (DRX cycle) in the DRX configuration parameter is within the preset range 1, it is determined that the target number of transmissions is N1.
  • the preset range 2 and the preset range 3 may be ranges in which a maximum value, a minimum value, a maximum value and a minimum value are preset.
  • the UE may have m preset range 2, which may correspond to n values of transmission times.
  • the above ratio represents the ratio of DRX on duration or off duration DRX cycle.
  • the target number of transmissions is determined to be N2.
  • the ratio of the above slots indicates the ratio of the on-duration or off-duration slots of DRX in the DRX cycle.
  • the DRX time includes at least one of the following: activation time, deactivation time; the first DRX configuration is different from the second DRX configuration.
  • the above-mentioned first configuration information includes power level information, and the above-mentioned power level information includes a remaining power level;
  • step 201 may include at least one of the following steps (ie, step H1 to step H3):
  • Step H1 The first UE determines the target transmission times of the data packet according to the above power level and the second mapping relationship.
  • Step H2 In the case that the above remaining power level is higher than or equal to the preset power level, the first UE enables the target transmission mechanism of the data packet.
  • Step H3 In the case that the remaining power level is lower than the preset power level, the first UE disables the target transmission mechanism of the data packet.
  • the foregoing power level (information) may belong to the first UE, or to other UEs, for example, the second UE performing data transmission with the first UE.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • a second mapping relationship between the power level of the UE and the number of transmission times, the power level information includes the remaining power level
  • the first UE enables the target transmission mechanism of the data packet
  • the first UE When the remaining power level is lower than the preset power level, the first UE disables the target transmission mechanism of the data packet.
  • the second mapping relationship includes: a mapping relationship between power levels and transmission times; the second mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the above mapping relationship is a mapping relationship between the remaining power level or the remaining power (range) and the number of transmissions.
  • the above-mentioned second mapping relationship may include: power level 1, or remaining power (range) 1 corresponds to transmission times N1.
  • the first UE determines the target number of transmission times N of the data packet according to the above remaining power level and the above second mapping relationship.
  • the first UE enables or disables mechanism 1 according to the remaining power level of the UE.
  • enable mechanism 1 if the power level of the UE is higher than or equal to power level 1, enable mechanism 1; if the UE power level is lower than power level 1, then disable mechanism 1.
  • the first configuration information includes power information, and the power includes remaining power
  • step 201 may include at least one of the following steps (ie, step I1 to step I3):
  • Step I1 Determine the target transmission times of the data packets according to the above electric quantity and the third mapping relationship.
  • Step I2 When the above-mentioned remaining power is greater than or equal to the preset remaining power, enable the target transmission mechanism of the data packet.
  • Step I3 When the above-mentioned remaining power is less than the preset remaining power, disable the target transmission mechanism of the data packet.
  • the foregoing power level may be power level information of the first UE, or power level information of other UEs, for example, a second UE performing data transmission with the first UE.
  • the above power information may be a power value or a power range.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • a third mapping relationship between the power of the UE and the number of transmissions, the above power includes the remaining power
  • the target transmission mechanism of the data packet is disabled.
  • the above-mentioned third mapping relationship includes: a mapping relationship between electric power and transmission times; the above-mentioned third mapping relationship is determined according to at least one of the following: predefined, network configuration, UE configuration, further, the above-mentioned third mapping relationship may be What is configured by the first UE or what is configured by other UEs is not limited in this embodiment of the present application.
  • the first UE determines the target number of transmission times N of the data packet according to the remaining power of the UE and the above-mentioned third mapping relationship.
  • the first UE enables or disables mechanism 1 according to the remaining power of the UE.
  • the remaining power (range) of the UE is greater than or equal to the remaining power (range) Power 1, enable mechanism 1; if the remaining power (range) of the UE is less than the remaining power (range) Power 1, disable mechanism 1 .
  • the above-mentioned first configuration information includes: UE type;
  • step 201 may include at least one of the following steps (ie, step G1 to step G4):
  • Step G1 In the case that the aforementioned UE type is the first UE type, disable the target transmission mechanism of the data packet.
  • Step G2 In the case that the aforementioned UE type is the second UE type, enable the target transmission mechanism of the data packet.
  • Step G3 In the case that the aforementioned UE type is the first UE type, determine that the target number of transmissions of the data packet is the first number of transmissions.
  • Step G4 In the case that the aforementioned UE type is the second UE type, determine that the target number of transmissions of the data packet is the second number of transmissions.
  • the foregoing UE type may be of the first UE, or of other UEs, for example, a second UE performing data transmission with the first UE, which is not limited in this embodiment of the present application.
  • the first UE determines the target transmission parameter according to the first configuration information and a preset rule.
  • the aforementioned preset rules include at least one of the following:
  • the UE type of the UE is the first UE type, disabling the target transmission mechanism of the data packet;
  • the UE type of the above-mentioned UE is the second UE type, enabling a target transmission mechanism of the data packet;
  • the UE type of the above-mentioned UE is the above-mentioned first UE type, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the target number of transmissions of the data packet is the second number of transmissions.
  • the foregoing first UE type includes a power limited (power limited) UE, or a PUE (pedestrian UE, pedestrian terminal).
  • the foregoing second UE type includes a non-power limited (non-power limited) UE, or a VUE (vehicle UE, vehicle terminal).
  • mechanism 1 is disabled; if the UE is a non-power limited UE/VUE, mechanism 1 is enabled.
  • N1 the target number of transmissions of the data packet
  • N2 the target number of transmissions of the data packet
  • the above step 201 may include the following steps 201d1 and 201d2:
  • Step 201d1 the first UE determines the fourth transmission times of the data packet according to the first configuration information.
  • Step 201d2 the first UE determines the target transmission times of the data packet according to the fourth transmission times and the resource quantity of the first UE.
  • the above-mentioned number of resources includes at least one of the following: the number of resources reserved by the above-mentioned first UE, the number of remaining resources of the above-mentioned first UE, the number of resources reserved by the above-mentioned first UE in one cycle, The remaining number of resources in the period, the number of resources used to transmit the above-mentioned data packets, and the number of remaining resources used to transmit the above-mentioned data packets.
  • the above resource number is used to represent the remaining transmission times of the data packet.
  • the first UE determines the number of data packet transmissions according to the number of reserved resources or the number M of remaining resources.
  • the above step 201 may include the following step 201e1:
  • Step 201e1 the first UE enables or disables the SL transmission mechanism according to the fourth number of transmission times and the number of resources of the first UE.
  • the above-mentioned number of resources includes at least one of the following: the number of resources reserved by the above-mentioned first UE, the number of remaining resources of the above-mentioned first UE, the number of resources reserved by the above-mentioned first UE in one cycle, The remaining number of resources in the period, the number of resources used to transmit the above-mentioned data packets, and the number of remaining resources used to transmit the above-mentioned data packets.
  • the fourth transmission times may be the transmission times determined by the first UE according to the first configuration information.
  • mechanism 1 if the fourth number of transmissions is less than the number of resources (that is, the remaining number of transmissions), mechanism 1 is disabled; if the fourth number of transmissions is greater than or equal to the number of resources, mechanism 1 is enabled.
  • the fourth number of transmission times is N1
  • the number of reserved resources or the number of remaining resources is M as an example.
  • N1 is greater than M
  • the UE disables mechanism 1; when N1 is less than or equal to M, the UE enables mechanism 1.
  • the above step 201 may include the following step 201f:
  • Step 201f the first UE determines the target transmission parameter according to the UE capability of the first UE and the first configuration information.
  • the target transmission mechanism for example, mechanism 1
  • the target transmission mechanism is a hybrid retransmission mechanism
  • the UE when the target transmission mechanism is a hybrid retransmission mechanism, it can determine whether to enable or disable the hybrid retransmission mechanism when transmitting data packets; if the UE supports the hybrid retransmission mechanism If the transmission mechanism is used, the number of data packet transmissions can be set to 0 when the data packet is transmitted.
  • FIG. 3 shows a flow chart of the method for sidelink SL transmission provided by the embodiment of the present application.
  • the sidelink SL transmission method provided by the embodiment of the present application may include the following steps 301:
  • Step 301 The network side device configures preset rules.
  • the above preset rule is used to determine the target transmission parameter.
  • the above target transmission parameters are used to transmit data packets
  • the above target transmission parameters include at least one of the following:
  • the target transmission times of the above-mentioned data packets is information for determining whether to enable or disable the target transmission mechanism of the above-mentioned data packets.
  • the foregoing preset rule configured by the network side device may be applicable to any UE.
  • the UE in the network side method corresponds to the first UE.
  • the above-mentioned target transmission mechanism includes at least one of the following:
  • the transport mechanism for configured grants is configured grants.
  • the foregoing target transmission parameters are determined based on at least one of the following:
  • the above priority includes at least one of the following: logical channel priority, logical channel group priority, priority carried in side link control information SCI, and priority of the data packet.
  • the method for sidelink SL transmission provided in the embodiment of the present application further includes the following step 302a1 and/or step 302a2:
  • Step 302a1 The first UE determines the target transmission mechanism of the data packet based on the target transmission times of the data packet.
  • Step 302a2 The first UE determines the target transmission times of the data packet based on enabling or disabling the target transmission mechanism of the data packet.
  • the above-mentioned preset rules include: a first mapping relationship between the first information and the number of transmission times;
  • the above-mentioned first mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the preset rules include at least one of the following:
  • the foregoing priority is greater than or equal to the foregoing priority threshold, enable the destination transmission mechanism of the foregoing data packet.
  • the preset rules include at least one of the following:
  • the above-mentioned target transmission mechanism of SL data is enabled; or, when the above-mentioned first resource selection mechanism of the UE includes random selection In the case of the resource selection mechanism or the resource selection mechanism based on partial detection, disable the target transmission mechanism of the above data packet;
  • the above-mentioned first resource selection mechanism includes a resource selection mechanism based on all detections, disable the above-mentioned target transmission mechanism of the data packet; or, when the above-mentioned first resource selection mechanism of the UE includes a resource selection mechanism based on all detections In the case of , enable the target transmission mechanism of the above data packet;
  • the first resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, determining that the target number of transmissions of the data packet is the third number of transmissions;
  • the above-mentioned first resource selection mechanism is a resource selection mechanism configured in the resource pool.
  • the above-mentioned second resource selection mechanism is a resource selection mechanism enabled by the UE, or a resource selection mechanism enabled by the UE for initial transmission;
  • the above preset rules include at least one of the following:
  • the second resource selection mechanism of the UE includes a randomly selected resource selection mechanism, enabling the above-mentioned target transmission mechanism of the data packet;
  • the second resource selection mechanism includes a partial detection-based resource selection mechanism or a full detection-based resource selection mechanism, disabling the destination transmission mechanism for the data packet;
  • the second resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the second resource selection mechanism is a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the second resource selection mechanism is a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is the third number of transmissions.
  • the preset rules include at least one of the following:
  • the target number of transmissions of the data packet is the first number of transmissions.
  • the preset rules include at least one of the following:
  • the destination transmission mechanism of the foregoing data packet is disabled.
  • the preset rules include at least one of the following:
  • the target transmission mechanism of the data packet is disabled.
  • the preset rules include at least one of the following:
  • the DRX cycle in the DRX configuration information is within a first preset range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the above-mentioned DRX time includes at least one of the following: a duration time, an off time; the above-mentioned first DRX configuration is different from the above-mentioned second DRX configuration.
  • the preset rules include at least one of the following:
  • a second mapping relationship between the power level of the UE and the number of transmission times, the power level information includes the remaining power level
  • the second mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the preset rules include at least one of the following:
  • a third mapping relationship between the power of the UE and the number of transmissions, the above power includes the remaining power
  • the foregoing third mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the preset rules include at least one of the following:
  • the UE type of the UE is the second UE type, enable the target transmission mechanism of the data packet;
  • the UE type of the UE is the first UE type, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the target number of transmissions of the data packet is the second number of transmissions.
  • the network side device configures a preset rule for the UE, and the preset rule is used to determine the target transmission parameter of the UE to transmit the data packet, and the target transmission parameter includes at least one of the following : The target transmission times of the data packet, the information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the UE can adjust the number of transmissions based on configuration parameters (for example, the number of blind retransmissions or the number of configured authorized/authorized-free transmissions), thereby saving system resources and improving system resource utilization.
  • the NACK only scenario can be regarded as the scenario where groupcast option 1 is enabled, or the scenario where the second-level SCI format indicated by SCI format 1-A is indicated as SCI format 2-B, or the second-level SCI adopts SCI format 2- The scene of B transmission.
  • the network side device can configure whether the SL logical channel that transmits data packets supports hybrid retransmission, and the UE can determine whether to enable or disable the target transmission mechanism according to the network side configuration.
  • the network-side device/UE-side device configures the configuration of Mix-TransmissionEnable in the IE of SL logical channel configuration through RRC signaling.
  • Mix-TransmissionEnable indicates whether mixed retransmission (that is, blind retransmission plus HARQ feedback retransmission) is supported in the current SL logical channel, and the value of Mix-TransmissionEnable can be ⁇ enable, disable ⁇ .
  • Mix-TransmissionEnable is configured as enable, it means that mixed retransmission is enabled; or, when HARQ feedback is enabled, feedback information can be ignored; or, when HARQ feedback mechanism is enabled, blind Retransmission. If Mix-TransmissionEnable is set to disable, it means that mixed retransmission is not enabled.
  • the information element (information element, IE) of RRC signaling is as follows:
  • hybrid retransmission indication information is added to the RRC IE, and if the indication information is enable, the UE sets the number of blind retransmission times to a default value N.
  • the number of transmission times (for example, N1) of the data packet may be a predefined (for example, specified by the protocol) value, or a value configured by the network, or a value configured by the UE.
  • N1 is a value configured by the network or UE, then N1 may be configured by any of the following:
  • N1 is the value configured in SL-ResourcePool based on sl-Priority-r16, or the value configured based on per priority;
  • N1 is a parameter configured in SL-LogicalChannelConfig, and the value of N1 can be ⁇ 0,1,2,...,Nn ⁇ .
  • N1 is 0.
  • N1 when the value of N1 is 0, it indicates that the hybrid retransmission mechanism is enabled.
  • the information element (information element, IE) of the RRC that configures the number of transmissions is as follows:
  • Sl-NumBlindTrans may also indicate the number of authorized/authorized-free transmissions configured, or the number of authorized/authorized-free transmissions configured within a cycle.
  • Sl-NumBlindTrans indicates the number of blind retransmission transmissions. When the value of Sl-NumBlindTrans is 0, it means that hybrid retransmission or blind retransmission is disabled; or, when the value of Sl-NumBlindTrans is 1, it means that hybrid retransmission or blind retransmission is disabled pass.
  • the UE may determine the transmission behavior according to at least one of the following rules:
  • the UE determines the target number of transmissions according to the predefined or configured number of transmissions N1.
  • the UE can enable mixed transmission;
  • the UE can perform the logical channel priority LCP process according to the following rules:
  • Step 1 Select a destination based on the MAC CE or the logical channel with the highest priority.
  • step 10 if the HARQ attribute corresponding to the selected destination (or the logical channel/MAC CE associated with the destination) is enable, or sl-HARQ-FeedbackEnabled is configured as enable, then perform the following step 10:
  • Step 10 check (check) the Mix-TransmissionEnable attribute corresponding to the destination (or the logical channel/MAC CE associated with the destination), if the Mix-TransmissionEnable attribute is enable, the logical channel can be selected in the following way:
  • Mode 1 When selecting a logical channel belonging to the destination, the Mix-TransmissionEnable attribute of the logical channel is enable.
  • Mode 2 When selecting a logical channel belonging to the destination, the Mix-TransmissionEnable attribute of the logical channel can be enable or disable.
  • Method 3 When selecting a logical channel belonging to the destination, the Mix-TransmissionEnable attribute of the logical channel is enable, and the transmission times of the corresponding logical channel are less than or equal to the predefined transmission times N1, or, the transmission times of the logical channel are less than or equal to The number of transmissions N1 corresponding to the Destination (that is, the logical channel/MAC CE associated with the Destination).
  • the number of transmissions of the above logical channel is the number of transmissions required by the logical channel.
  • the destination is determined and the current TB needs to be retransmitted X times blindly, the request cannot be changed.
  • Logical channels with multiple blind retransmission times are multiplexed in the current TB. Therefore, it is necessary to select a logical channel whose required number of transmissions is less than or equal to the predefined number of transmissions N1 (eg, the number of blind retransmissions mentioned above).
  • the HARQ attribute corresponding to the selected destination is disabled or sl-HARQ-FeedbackEnabled is configured as disabled, or the destination (or the logical channel associated with the destination or MAC CE) corresponding to the Mix-TransmissionEnable attribute is disable, then when logical channels belonging to the destination are subsequently selected, the Mix-TransmissionEnable attribute of these logical channels is disabled.
  • the execution subject may be the device for sidelink SL transmission, or the user in the device for sidelink SL transmission A control module for performing a method for sidelink SL transmission.
  • the method for the sidelink SL transmission performed by the device for the sidelink SL transmission is taken as an example to illustrate the device for the sidelink SL transmission provided in the embodiment of the present application.
  • FIG. 4 is a schematic diagram of a possible structure of a device for sidelink SL transmission provided by an embodiment of the present invention.
  • the device 400 for sidelink SL transmission includes: a determination module 401 and The transmission module 402, wherein: the determination module 401 is configured to determine target transmission parameters according to the first configuration information, and the transmission module 402 is configured to transmit data packets based on the target transmission parameters determined by the determination module 401;
  • the target transmission parameter includes at least one of the following: target transmission times of the data packet, and information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the target transmission mechanism includes at least one of the following:
  • the transport mechanism for configured grants is configured grants.
  • the determining module is specifically configured to determine the target transmission parameter according to the first configuration information and preset rules
  • the preset rule is a rule determined according to at least one of the following:
  • Predefined network-side device configuration
  • UE-side configuration Predefined; network-side device configuration; UE-side configuration.
  • the first configuration information includes at least one of the following:
  • First information the destination identifier of the data packet; the source identifier of the data packet;
  • Resource selection mechanism the first packet delay budget PDB of the data packet; channel busy rate CBR;
  • the first PDB includes: the PDB of the above data packet and/or the remaining PDB of the above data packet;
  • the first information includes at least one of the following: priority;
  • the priority carried in the channel control information SCI is the priority of the data packet.
  • the target transmission parameter is determined based on at least one of the following: resource pool; logical channel; priority; PQI; PFI; destination identifier; source identifier; UE type; power level ; DRX configuration; CBR range; CR range; wherein, the priority includes at least one of the following: logical channel priority, logical channel group priority, the priority carried in the side link control information SCI, the data packet priority.
  • the determining module is specifically configured to: determine to enable or disable the target transmission mechanism of the data packet based on the target transmission times of the data packet,
  • the first configuration information includes: first information
  • the determining module is specifically configured to: determine the target transmission times of the data packet according to the first information and the first mapping relationship;
  • the first mapping relationship includes: a mapping relationship between the first information and the number of transmission times; the first mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first information includes: priority;
  • the determining module is specifically configured to disable the target transmission mechanism of the data packet when the priority is less than a priority threshold
  • the priority threshold is a parameter that is predefined, configured by the network or configured by the UE.
  • the first configuration information includes: a first resource selection mechanism, where the first resource selection mechanism is a resource selection mechanism configured in a resource pool;
  • the determination module is specifically used for at least one of the following:
  • the first resource selection mechanism includes a randomly selected resource selection mechanism or a partial detection-based resource selection mechanism, enable the target transmission mechanism of the data packet; or, when the first resource selection mechanism includes a random In the case of the selected resource selection mechanism or the resource selection mechanism based on partial detection, disabling the target transmission mechanism of the data packet;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, disabling the target transmission mechanism of the data packet; or, when the first resource selection mechanism includes a resource selection mechanism based on all detections In the case of , enable the target transmission mechanism of the data packet;
  • the first resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is a second number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is a third number of transmissions.
  • the first configuration information includes a second resource selection mechanism
  • the second resource selection mechanism is a resource selection mechanism enabled by the first UE, or a resource selection mechanism enabled by the first UE.
  • the determination module is specifically used for at least one of the following:
  • the second resource selection mechanism comprises a randomly selected resource selection mechanism, enabling a destination delivery mechanism for the data packet
  • the second resource selection mechanism includes a partial detection-based resource selection mechanism or a full detection-based resource selection mechanism, disabling the destination transmission mechanism for the data packet;
  • the second resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the second resource selection mechanism is a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the second resource selection mechanism is a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is a third number of transmissions.
  • the first configuration information includes a first PDB
  • the determination module is specifically used for at least one of the following:
  • the first configuration information includes CBR
  • the determination module is specifically used for at least one of the following:
  • the first configuration information includes CR
  • the determination module is specifically used for at least one of the following:
  • the target transmission mechanism of the data packet is disabled.
  • the first configuration information includes configuration information of DRX configuration
  • the determination module is specifically used for at least one of the following:
  • the DRX configuration is the first DRX configuration, enable the target transmission mechanism of the data packet;
  • the DRX configuration is the second DRX configuration, disabling the target transmission mechanism of the data packet
  • the DRX cycle in the configuration information is within a first preset range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the DRX time includes at least one of the following: activation time, deactivation time; the first DRX configuration is different from the second DRX configuration.
  • the first configuration information includes a power class of the first UE, and the power class information includes a remaining power class;
  • the determination module is specifically used for at least one of the following:
  • the second mapping relationship includes: a mapping relationship between power levels and transmission times; the second mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first configuration information includes the power of the first UE, and the power includes remaining power
  • the determination module is specifically used for at least one of the following:
  • the third mapping relationship includes: a mapping relationship between electric power and transmission times; the third mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first configuration information includes: HARQ feedback configuration
  • the determining module is specifically configured to: if the HARQ feedback configuration is a target configuration, the first UE transmits the data packet according to the target transmission mechanism.
  • the first configuration information includes: a UE type of the first UE;
  • the determination module is specifically used for at least one of the following:
  • the UE type of the first UE is the first UE type, disabling the target transmission mechanism of the data packet;
  • the UE type of the first UE is a second UE type, enable the target transmission mechanism of the data packet;
  • the UE type of the first UE is the first UE type, determining that the target number of transmissions of the data packet is a first number of transmissions;
  • the UE type of the first UE is the second UE type, determine that the target number of transmissions of the data packet is the second number of transmissions.
  • the target transmission parameter includes the target transmission times of the data packet
  • the determination module is specifically used for at least one of the following:
  • the first UE determines a fourth number of transmission times of the data packet according to the first configuration information
  • the first UE determines the target number of transmissions of the data packet according to the fourth number of transmissions and the number of resources of the first UE;
  • the number of resources includes at least one of the following: the number of resources reserved by the first UE, the number of remaining resources of the first UE, the number of resources reserved by the first UE in one cycle, the The number of resources remaining by the first UE in one period, the number of resources used to transmit the data packet, the number of remaining resources used to transmit the data packet.
  • the determining module is specifically configured to: the first The UE enables or disables the target transmission mechanism of the data packet according to the fourth number of transmission times and the number of resources of the first UE;
  • the number of resources includes at least one of the following: the number of resources reserved by the first UE, the number of remaining resources of the first UE, the number of resources reserved by the first UE in one cycle, the The number of resources remaining by the first UE in one period, the number of resources used to transmit the data packet, the number of remaining resources used to transmit the data packet.
  • the determining module is specifically configured to determine the target transmission parameter according to the UE capability of the first UE and the first configuration information.
  • the first UE determines the target transmission parameter according to the first configuration information, and transmits the data packet based on the target transmission parameter; wherein the target transmission parameter includes at least one of the following One: the target transmission times of the data packet, and determine the information of enabling or disabling the target transmission mechanism of the data packet.
  • the target transmission parameter includes at least one of the following One: the target transmission times of the data packet, and determine the information of enabling or disabling the target transmission mechanism of the data packet.
  • the UE in this embodiment of the present application includes a terminal.
  • the device for SL transmission in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or a component, an integrated circuit, or a chip in a terminal or UE.
  • the apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the device for SL transmission provided by the embodiment of the present application can realize various processes realized by the method embodiments in FIG. 1 to FIG. 3 , and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • Fig. 5 is a schematic diagram of a possible structure of a network side device provided by an embodiment of the present invention.
  • the network side device 500 includes: a configuration module 501, wherein: the configuration module 501 is used for the network side Device configuration preset rules; wherein, the preset rules are used to determine target transmission parameters; the target transmission parameters are used to transmit data packets; the target transmission parameters include at least one of the following: the target transmission times of the data packets , to determine the information to enable or disable the target transport mechanism of the data packet.
  • the target transmission mechanism includes at least one of the following:
  • the transport mechanism for configured grants is configured grants.
  • the target transmission parameter is determined based on at least one of the following:
  • the priority includes at least one of the following: logical channel priority level, the priority of the logical channel group, the priority carried in the sidelink control information SCI, and the priority of the data packet.
  • the device further includes: a determining module:
  • the determination module is configured to determine the target transmission mechanism of the data packet based on the target transmission times of the data packet;
  • the preset rule includes: a first mapping relationship between the first information and the number of transmission times;
  • the first mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the preset rules include at least one of the following:
  • the priority threshold is a parameter that is predefined, configured by the network or configured by the UE.
  • the preset rules include at least one of the following:
  • the first resource selection mechanism of the UE includes a randomly selected resource selection mechanism or a part-based resource selection mechanism, enable the target transmission mechanism of the SL data; or, when the first resource selection mechanism includes random selection In the case of the resource selection mechanism or the resource selection mechanism based on partial detection, disable the target transmission mechanism of the data;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, disabling the target transmission mechanism of the data packet; or, when the first resource selection mechanism includes a resource selection mechanism based on all detections In the case of , enable the target transmission mechanism of the data packet;
  • the first resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is a second number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, determining that the target number of transmissions of the data packet is a third number of transmissions;
  • the first resource selection mechanism is a resource selection mechanism configured in a resource pool.
  • the second resource selection mechanism is a resource selection mechanism enabled by the UE, or a resource selection mechanism enabled for the initial transmission of the UE;
  • the preset rules include at least one of the following:
  • the second resource selection mechanism of the UE comprises a randomly selected resource selection mechanism, enabling the target transmission mechanism of the data packet
  • the second resource selection mechanism includes a partial detection-based resource selection mechanism or a full detection-based resource selection mechanism, disabling the destination transmission mechanism for the data packet;
  • the second resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the second resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the second resource selection mechanism includes a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is a third number of transmissions.
  • the preset rules include at least one of the following:
  • the preset rules include at least one of the following:
  • the preset rules include at least one of the following:
  • the target transmission mechanism of the data packet is disabled.
  • the preset rules include at least one of the following:
  • the DRX configuration is the second DRX configuration, disabling the target transmission mechanism of the data packet
  • the DRX cycle in the DRX configuration information is within a first preset range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the DRX time in the DRX configuration information is within a second preset range, then determine that the target number of transmissions of the data packet is the second number of transmissions;
  • the DRX time includes at least one of the following: duration, off time; the first DRX configuration is different from the second DRX configuration.
  • the preset rules include at least one of the following:
  • a second mapping relationship between the power level of the UE and the number of transmissions, the power level information includes the remaining power level
  • the second mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the preset rules include at least one of the following:
  • a third mapping relationship between the power of the UE and the number of transmissions, the power includes the remaining power
  • the remaining power is greater than or equal to a preset remaining power, enable the target transmission mechanism of the data packet
  • the third mapping relationship includes at least one of the following: a predefined mapping relationship, a mapping relationship configured by the network, and a mapping relationship configured by the UE.
  • the preset rules include at least one of the following:
  • the UE type of the UE is the first UE type, disabling the target transmission mechanism of the data packet;
  • the UE type of the UE is a second UE type, enable the target transmission mechanism of the data packet;
  • the UE type of the UE is the first UE type, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the UE type of the UE is the second UE type, determine that the target number of transmissions of the data packet is the second number of transmissions.
  • this embodiment of the present application further provides a communication device 600, including a processor 601, a memory 602, and programs or instructions stored in the memory 602 and operable on the processor 601,
  • a communication device 600 including a processor 601, a memory 602, and programs or instructions stored in the memory 602 and operable on the processor 601
  • the communication device 600 is a terminal
  • the program or instruction is executed by the processor 601
  • various processes of the foregoing method embodiments for sidelink SL transmission can be achieved, and the same technical effect can be achieved.
  • the communication device 600 is a network-side device
  • the program or instruction is executed by the processor 601
  • each process of the above-mentioned method embodiment for side link SL transmission can be achieved, and the same technical effect can be achieved. To avoid repetition, here No longer.
  • the embodiment of the present application also provides a UE, including a processor and a communication interface, the processor is used to determine a target transmission parameter according to the first configuration information, and the communication interface is used to transmit a data packet based on the target transmission parameter.
  • This UE embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 7 is a schematic diagram of a hardware structure of a UE implementing an embodiment of the present application.
  • the UE100 includes but not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc. At least some parts.
  • the UE 100 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 110 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. and other functions.
  • a power supply such as a battery
  • the UE structure shown in FIG. 7 does not limit the terminal, and the terminal may include more or less components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042, and the graphics processing unit 1041 is used by the image capturing device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 107 includes a touch panel 1071 and other input devices 1072 .
  • the touch panel 1071 is also called a touch screen.
  • the touch panel 1071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 101 receives the downlink data from the network side device, and processes it to the processor 110; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 109 can be used to store software programs or instructions as well as various data.
  • the memory 109 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 109 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 110 .
  • the above-mentioned processor 110 is used for the first UE to determine target transmission parameters according to the first configuration information; the above-mentioned radio frequency unit 101 is used for transmitting data packets based on the target transmission parameters; wherein, the target transmission parameters include at least one of the following : the target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the target transmission mechanism includes at least one of the following:
  • the transport mechanism for configured grants is configured grants.
  • the processor 110 is specifically configured to: the first UE determines the target transmission parameter according to the first configuration information and preset rules;
  • the preset rule is a rule determined according to at least one of the following: predefined; network-side equipment; UE-side configuration.
  • the first configuration information includes at least one of the following:
  • the first information includes at least one of the following:
  • the priority includes at least one of the following: logical channel priority, logical channel group priority , the priority carried in the sidelink control information SCI, the priority of the data packet.
  • the target transmission parameter is determined based on at least one of the following: resource pool; logical channel; priority; PQI; PFI; destination identifier; source identifier; UE type;
  • the priority includes at least one of the following: logical channel priority, logical channel group priority, priority carried in side link control information SCI, the data The priority of the package.
  • the processor 110 is further configured to determine whether to enable or disable the target transmission mechanism of the data packet based on the target transmission times of the data packet, or, based on enabling or disabling Disabling the target transmission mechanism of the data packet, and determining the target transmission times of the data packet.
  • the first configuration information includes: first information
  • the above-mentioned processor 110 is specifically used for:
  • the first mapping relationship includes: a mapping relationship between the first information and the number of transmission times; the first mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first information includes: priority;
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the priority threshold is a parameter that is predefined, configured by the network or configured by the UE.
  • the first configuration information includes: a first resource selection mechanism, where the first resource selection mechanism is a resource selection mechanism configured in a resource pool;
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the first resource selection mechanism includes a randomly selected resource selection mechanism or a partial detection-based resource selection mechanism, enable the target transmission mechanism of the data packet; or, when the first resource selection mechanism includes a random In the case of the selected resource selection mechanism or the resource selection mechanism based on partial detection, disabling the target transmission mechanism of the data packet;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, disabling the target transmission mechanism of the data packet; or, when the first resource selection mechanism includes a resource selection mechanism based on all detections In the case of , enable the target transmission mechanism of the data packet;
  • the first resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is a second number of transmissions;
  • the first resource selection mechanism includes a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is a third number of transmissions.
  • the first configuration information includes a second resource selection mechanism
  • the second resource selection mechanism is a resource selection mechanism enabled by the first UE, or a resource selection mechanism enabled by the first UE.
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the second resource selection mechanism comprises a randomly selected resource selection mechanism, enabling a destination delivery mechanism for the data packet
  • the second resource selection mechanism includes a partial detection-based resource selection mechanism or a full detection-based resource selection mechanism, disabling the destination transmission mechanism for the data packet;
  • the second resource selection mechanism includes a randomly selected resource selection mechanism, determining that the target number of transmissions of the data packet is the first number of transmissions;
  • the second resource selection mechanism includes a resource selection mechanism based on partial detection, determining that the target number of transmissions of the data packet is the second number of transmissions;
  • the second resource selection mechanism includes a resource selection mechanism based on all detections, it is determined that the target number of transmissions of the data packet is a third number of transmissions.
  • the first configuration information includes a first PDB
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the first configuration information includes CBR
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the first configuration information includes CR
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the target transmission mechanism of the data packet is disabled.
  • the first configuration information includes configuration information of DRX configuration
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the DRX configuration is the first DRX configuration, enable the target transmission mechanism of the data packet;
  • the DRX configuration is the second DRX configuration, disabling the target transmission mechanism of the data packet
  • the DRX cycle in the configuration information is within a first preset range, determine that the target number of transmissions of the data packet is the first number of transmissions;
  • the DRX time includes at least one of the following: activation time, deactivation time; the first DRX configuration is different from the second DRX configuration.
  • the first configuration information includes a power class of the first UE, and the power class information includes a remaining power class;
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the second mapping relationship includes: a mapping relationship between power levels and transmission times; the second mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first configuration information includes the power of the first UE, and the power includes remaining power
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the third mapping relationship includes: a mapping relationship between electric power and transmission times; the third mapping relationship is determined according to at least one of the following: predefined, network configuration, and UE configuration.
  • the first configuration information includes: HARQ feedback configuration
  • the above processor 110 is specifically configured to: if the HARQ feedback configuration is a target configuration, the first UE transmits the data packet according to the target transmission mechanism.
  • the first configuration information includes: a UE type of the first UE;
  • the above-mentioned processor 110 is specifically used for at least one of the following:
  • the UE type of the first UE is the first UE type, disabling the target transmission mechanism of the data packet;
  • the UE type of the first UE is a second UE type, enable the target transmission mechanism of the data packet;
  • the UE type of the first UE is the first UE type, determining that the target number of transmissions of the data packet is a first number of transmissions;
  • the UE type of the first UE is the second UE type, determine that the target number of transmissions of the data packet is the second number of transmissions.
  • the target transmission parameter includes the target transmission times of the data packet
  • the above-mentioned processor 110 is specifically configured to: the first UE determines the fourth transmission times of the data packet according to the first configuration information;
  • the first UE determines the target number of transmissions of the data packet according to the fourth number of transmissions and the number of resources of the first UE;
  • the number of resources includes at least one of the following: the number of resources reserved by the first UE, the number of remaining resources of the first UE, the number of resources reserved by the first UE in one cycle, the The number of resources remaining by the first UE in one period, the number of resources used to transmit the data packet, the number of remaining resources used to transmit the data packet.
  • the processor 110 is specifically configured to: 4. The number of times of transmission, and the number of resources of the first UE, enable or disable the target transmission mechanism of the data packet;
  • the number of resources includes at least one of the following: the number of resources reserved by the first UE, the number of remaining resources of the first UE, the number of resources reserved by the first UE in one cycle, the The number of resources remaining by the first UE in one period, the number of resources used to transmit the data packet, the number of remaining resources used to transmit the data packet.
  • the processor 110 is specifically configured to: the first UE determines the target transmission parameter according to the UE capability of the first UE and the first configuration information.
  • the first UE determines the target transmission parameter according to the first configuration information, and transmits the data packet based on the target transmission parameter; wherein, the above target transmission parameter includes the following At least one of: target transmission times of the data packet, information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • target transmission times of the data packet information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • other transmission mechanisms such as blind retransmission
  • the success rate of data packet transmission in the system can be improved in the NACK only scenario.
  • the UE can adjust the number of transmissions (for example, the number of blind retransmissions) based on configuration parameters, thereby saving system resources and improving system resource utilization.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the processor is used to configure preset rules, wherein the preset rules are used to determine target transmission parameters; the target transmission parameters are used to transmit data packet; the target transmission parameter includes at least one of the following: target transmission times of the data packet, and information for determining whether to enable or disable the target transmission mechanism of the data packet.
  • the network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network device 700 includes: an antenna 71 , a radio frequency device 72 , and a baseband device 73 .
  • the antenna 71 is connected to a radio frequency device 72 .
  • the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing.
  • the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72
  • the radio frequency device 72 processes the received information and sends it out through the antenna 71 .
  • the foregoing frequency band processing device may be located in the baseband device 73 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 73 , and the baseband device 73 includes a processor 74 and a memory 75 .
  • the baseband device 73 can include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the baseband device 73 may also include a network interface 76 for exchanging information with the radio frequency device 72, such as a common public radio interface (CPRI for short).
  • a network interface 76 for exchanging information with the radio frequency device 72, such as a common public radio interface (CPRI for short).
  • CPRI common public radio interface
  • the network-side device in the embodiment of the present invention also includes: instructions or programs stored in the memory 75 and operable on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to execute the modules shown in FIG. 6 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.
  • the embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each embodiment of the above-mentioned method for side link SL transmission is implemented. process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above-mentioned side link SL
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run programs or instructions to implement the above-mentioned side link SL
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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

Abstract

La présente demande relève du domaine technique des communications. Sont divulgués un procédé et un appareil de transmission en liaison latérale (SL), un UE et un dispositif côté réseau. Dans les modes de réalisation de la présente demande, le procédé de transmission en liaison latérale comprend les étapes au cours desquelles : un premier UE détermine un paramètre de transmission cible en fonction de premières informations de configuration ; et le premier UE transmet un paquet de données sur la base du paramètre de transmission cible, le paramètre de transmission cible contenant le nombre cible d'instances de transmission du paquet de données et/ou des informations d'un mécanisme de transmission cible permettant de déterminer d'activer ou de désactiver le paquet de données.
PCT/CN2022/129038 2021-11-01 2022-11-01 Procédé et appareil de transmission en liaison latérale (sl), ue et dispositif côté réseau WO2023072302A1 (fr)

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CN202111285084.4A CN116095864A (zh) 2021-11-01 2021-11-01 用于旁链路sl传输的方法、装置、ue及网络侧设备
CN202111285084.4 2021-11-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111435885A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 用于传输数据的方法、通信设备和网络设备
WO2021086029A1 (fr) * 2019-10-29 2021-05-06 Lg Electronics Inc. Établissement de priorité de canal logique sur la base d'une rétroaction harq
CN113395749A (zh) * 2020-03-13 2021-09-14 维沃移动通信有限公司 传输配置方法及电子设备
WO2021209977A1 (fr) * 2020-04-18 2021-10-21 Lenovo (Singapore) Pte. Ltd. Retransmissions sans accusé de réception et basées sur une rétroaction combinées

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111435885A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 用于传输数据的方法、通信设备和网络设备
WO2021086029A1 (fr) * 2019-10-29 2021-05-06 Lg Electronics Inc. Établissement de priorité de canal logique sur la base d'une rétroaction harq
CN113395749A (zh) * 2020-03-13 2021-09-14 维沃移动通信有限公司 传输配置方法及电子设备
WO2021209977A1 (fr) * 2020-04-18 2021-10-21 Lenovo (Singapore) Pte. Ltd. Retransmissions sans accusé de réception et basées sur une rétroaction combinées

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