WO2023116829A1 - 信息传输方法、信息传输指示方法、装置及终端 - Google Patents

信息传输方法、信息传输指示方法、装置及终端 Download PDF

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Publication number
WO2023116829A1
WO2023116829A1 PCT/CN2022/141059 CN2022141059W WO2023116829A1 WO 2023116829 A1 WO2023116829 A1 WO 2023116829A1 CN 2022141059 W CN2022141059 W CN 2022141059W WO 2023116829 A1 WO2023116829 A1 WO 2023116829A1
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WIPO (PCT)
Prior art keywords
information
terminal
coordination
request
stage sci
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PCT/CN2022/141059
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English (en)
French (fr)
Inventor
王欢
纪子超
彭淑燕
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维沃移动通信有限公司
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Publication of WO2023116829A1 publication Critical patent/WO2023116829A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application belongs to the technical field of communication, and specifically relates to an information transmission method, an information transmission instruction method, a device, and a terminal.
  • NR Direct Link SideLink, SL
  • NR New Radio
  • SideLink, SL ServiceLink, SL
  • the resource allocation method scheduled by the base station the direct link resources used by the terminal for data transmission are determined by the base station, and the transmission (Transmit, TX) terminal (User Equipment, UE) is notified through downlink signaling.
  • TX Transmission, TX
  • the terminal Select available transmission resources from the (pre-)configured resource pool, and the terminal performs channel monitoring before resource selection, selects a resource set with less interference according to the channel monitoring result, and then randomly selects the resource set from the resource set for transmission H.
  • Embodiments of the present application provide an information transmission method, an information transmission indication method, a device, and a terminal, which can solve the problem of implementing an enhancement scheme of a resource allocation manner.
  • an information transmission method includes:
  • the first terminal transmits request information and/or coordination information one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • an information transmission device including:
  • a first sending module configured to transmit request information and/or coordination information one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide the second terminal with direct link resource selection information
  • an information transmission method including:
  • the second terminal receives request information and/or coordination information transmitted one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • an information transmission device including:
  • a first receiving module configured to receive request information and/or coordination information for one or more transmissions
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • a method for indicating information transmission including:
  • the third terminal sends the first-stage direct link control information (Sidelink Control Information, SCI) and/or the second-stage SCI;
  • SCI Servicelink Control Information
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • an information transmission indicating device including:
  • the second sending module is used to send the first stage SCI and/or the second stage SCI;
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • a method for indicating information transmission including:
  • the fourth terminal receives the first phase SCI and/or the second phase SCI
  • the second stage SCI is used to transmit request information and/or coordination information, the request information is used to request the fourth terminal to feed back coordination information, and the coordination information is used to provide the fourth terminal with a direct link Road resource selection information;
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • an information transmission indicating device including:
  • the second receiving module is used to receive the first stage SCI and/or the second stage SCI;
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • a terminal includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the following steps are implemented: The method according to one aspect, or the method according to the third aspect, or the method according to the fifth aspect, or the steps of the method according to the seventh aspect.
  • a tenth aspect provides a terminal, including a processor and a communication interface, wherein the communication interface is used to execute the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect The method, or the steps of the method as described in the seventh aspect.
  • a communication system including: a terminal and a network-side device, the terminal can be used to execute the method as described in the first aspect, or the method as described in the third aspect, or the method as described in the fifth aspect The method, or the steps of the method as described in the seventh aspect.
  • a readable storage medium on which a program or an instruction is stored, and when the program or instruction is executed by a processor, the steps of the method as described in the first aspect are implemented, or The steps of the method described in the third aspect, or the implementation of the steps of the method described in the fifth aspect, or the implementation of the steps of the method described in the seventh aspect.
  • a chip in a thirteenth aspect, there is provided 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 a program or an instruction to implement the method described in the first aspect
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the The steps of the method described in the third aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the seventh aspect.
  • the first terminal requests the second terminal to feed back coordination information by sending request information to the second terminal one or more times, so that the first terminal can know the SL resource selection information provided by the second terminal, and according to The SL resource selection information performs resource selection; the first terminal can also provide SL resource selection information to the second terminal by feeding back coordination information to the second terminal one or more times after receiving the request information sent by the second terminal, so as to making the second terminal perform resource selection according to the SL resource selection information.
  • an enhanced resource allocation scheme is realized.
  • FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of an information transmission method on the first terminal side according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of an information transmission method on the second terminal side according to an embodiment of the present application
  • FIG. 4 is a schematic flowchart of an information transmission indication method on the third terminal side according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a fourth terminal-side information transmission indication method according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of the device module corresponding to Fig. 2;
  • Fig. 7 is a schematic structural diagram of the device module corresponding to Fig. 3;
  • Fig. 8 is a schematic structural diagram of the device module corresponding to Fig. 4;
  • Fig. 9 is a schematic structural diagram of the device module corresponding to Fig. 5;
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal according to 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 the present 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.
  • 6G 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 may be a mobile phone, a tablet computer (Tablet Personal Computer, TPC), a laptop computer (Laptop Computer, LC) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, Ultra-Mobile Personal Computer (UMPC), Mobile Internet Device (MID), Augmented Reality (AR)/Virtual Reality (VR) equipment, robots, wearable devices (Wearable Device, WD), vehicle equipment (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), games Terminal-side devices such as computer, personal computer (PC), teller machine or self-service machine.
  • PC personal computer
  • teller machine or self-service machine such as
  • the network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit.
  • RAN Radio Access Network
  • the access network device 12 may include a base station, a wireless local area network (Wireless Local Area Networks, WLAN) access point or a wireless fidelity (Wireless Fidelity, WiFi) node, etc., and the base station may be called a node B or an evolved node B (eNB) , access point, base transceiver station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended service set (Extended Service Set, ESS), home B node, Home evolved Node B, 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 In the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.
  • an information transmission method in the embodiment of the present application includes:
  • Step 201 the first terminal transmits request information and/or coordination information one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • the first terminal sends the request information to the second terminal one or more times, requesting the second terminal to feed back the coordination information, so that the first terminal knows the SL resource selection information provided by the second terminal, and according to The SL resource selection information performs resource selection; the first terminal can also provide SL resource selection information to the second terminal by feeding back coordination information to the second terminal one or more times after receiving the request information sent by the second terminal, so as to making the second terminal perform resource selection according to the SL resource selection information.
  • an enhanced resource allocation scheme is realized.
  • request information (request information) and/or coordination information (coordination information) are controlled by the second stage (2nd stage) through link control information (Sidelink Control Information, SCI) or media access control control unit (Media Access Control Controlel Ement , MAC CE) carried.
  • the coordination information provides the SL resource selection information to the second terminal by carrying the SL resource selection information or indicating the SL resource selection information.
  • step 201 includes:
  • the first terminal transmits the request information and/or the coordination information one or more times based on preset retransmission times.
  • the preset number of retransmissions is configured or predefined. Based on the preset number of retransmissions, the first terminal only performs one transmission of request information and/or coordination information when the preset number of retransmissions is 0; when the preset number of retransmissions is greater than 0, performs request information and /or the retransmission of the preset retransmission times of coordination information. In this way, excessive signaling overhead caused by request information and/or coordination information retransmissions is avoided.
  • the configured or predefined preset number of retransmissions may also be understood as a configured or predefined maximum number of retransmissions, and the actual number of retransmissions is less than or equal to the maximum number of retransmissions.
  • the first terminal uses the maximum preset retransmission times to transmit the request information and/or coordination information multiple times.
  • the number of transmissions or the maximum value of the number of transmissions may be configured or predefined, and the number of transmissions or the maximum value of the number of transmissions minus one is the preset number of retransmissions or the maximum number of retransmissions.
  • the number of transmission times or the maximum number of times of transmission can be separately configured or predefined for the transmission of the request information and/or the coordination information, so as to ensure that the system can flexibly control the resource overhead of the transmission of the request information and/or the coordination information .
  • the transmission of request information and/or coordination information supports retransmission based on Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK). Therefore, optionally, before step 201, it also includes:
  • the first terminal feeds back HARQ-ACK information or second HARQ-ACK information based on the received first hybrid automatic repeat request, and determines whether to retransmit the request information and/or coordination information;
  • the first HARQ-ACK information is generated by the second terminal according to whether the second-stage direct link control information SCI is successfully demodulated, and the second-stage SCI carries the request information and/or the coordination information;
  • the second HARQ-ACK information is generated by the second terminal according to whether the demodulated Media Access Control (Media Access Control, MAC) Protocol Data Unit (Protocol Data Unit, PDU) or the MAC layer data packet is successfully generated, the MAC PDU or the MAC
  • the layer data packet includes a media access control control element MAC CE carrying the request information and/or the coordination information.
  • the first terminal after receiving the first HARQ-ACK information or the second HARQ-ACK information, the first terminal can determine whether to retransmit the request information and/or the coordination information.
  • the first terminal determines whether to retransmit the request information and/or the coordination information based on the first HARQ-ACK information, including:
  • the first terminal retransmits the request information and/or the coordination information; or,
  • the first terminal retransmits the request information and/or the coordination information; or,
  • the first terminal stops transmitting the request information and/or the coordination information.
  • the first terminal judges whether to retransmit the request information and/or coordination information based on the first HARQ-ACK information, it can be determined that when the first HARQ-ACK information is received as negative information, the retransmission request information and/or coordination information; when the first HARQ-ACK information is received as confirmation information, stop transmitting request information and/or coordination information; when the first HARQ-ACK information is not received, retransmit request information and/or coordination information. Then the first terminal transmits according to the determined content.
  • the first terminal determines whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information, including:
  • the first terminal retransmits the request information and/or the coordination information; or,
  • the first terminal retransmits the request information and/or the coordination information; or,
  • the first terminal stops transmitting the request information and/or the coordination information.
  • the first terminal judges whether to retransmit the request information and/or coordination information based on the second HARQ-ACK information, it is determined that an implementation is: the first terminal will receive the second HARQ-ACK information as In the case of negative information, retransmit the request information and/or coordination information; if the second HARQ-ACK information is received as confirmation information, stop transmitting the request information and/or coordination information; if the second HARQ-ACK information is not received In the case of ACK information, retransmit request information and/or coordination information. Then the first terminal transmits according to the determined content.
  • the first terminal determines whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information, including:
  • the first terminal stops transmitting the request information and/or the coordination information; or,
  • the first terminal retransmits the request information and/or the coordination information.
  • the first terminal judges whether to retransmit the request information and/or coordination information based on the second HARQ-ACK information, it is determined that another implementation is: the first terminal will receive the second HARQ-ACK information In the case of negative information or confirmation information (that is, as long as the second HARQ-ACK information is received, regardless of whether the second HARQ-ACK information is negative information or confirmation information), stop transmitting request information and/or coordination information; In the case of the second HARQ-ACK information, retransmit the request information and/or coordination information. Then the first terminal transmits according to the determined content.
  • the first HARQ-ACK information is generated by the second terminal based on whether the demodulation of the 2nd stage SCI is successful; the second HARQ-ACK information is generated based on whether the demodulation of the MAC PDU or the MAC layer data packet is successful.
  • the second terminal if the second terminal obtains request information and/or coordination information by demodulating the 2nd stage SCI, the second terminal will generate the first HARQ- ACK information, at this time the first HARQ-ACK information is the confirmation information ACK; on the contrary, when the demodulation of the 2nd stage SCI is unsuccessful (failed), the first HARQ-ACK information is generated, and the first HARQ-ACK information is negative information at this time NACK.
  • the first terminal determines whether to retransmit the request information and/or coordination information based on the first HARQ-ACK information
  • the second A terminal will stop transmitting request information and/or coordination information
  • the first terminal will retransmit the request information and/or coordination information ; If the first terminal does not receive the first HARQ-ACK information, the first terminal will also retransmit the request information and/or coordination information.
  • whether the first HARQ-ACK information generated by the second terminal is ACK or NACK can also be based on whether the demodulation of the 2nd stage SCI is successful, and whether the MAC PDU or the MAC layer data packet only includes the MAC carrying the request information and/or coordination information.
  • CE OK That is, when the received MAC PDU or MAC layer data packet only includes the MAC CE and successfully demodulates the 2nd stage SCI, generate the first HARQ-ACK information as ACK; in the received MAC PDU or MAC layer The data packet only includes the MAC CE, and when the 2nd stage SCI is not successfully demodulated, the first HARQ-ACK information is generated as NACK.
  • the first terminal will determine whether the first terminal is based on the first HARQ-ACK information or the second HARQ-ACK information according to whether the MAC PDU or the MAC layer data packet includes other information except the MAC CE, Determines whether to retransmit request information and/or coordination information.
  • the first terminal determines whether to retransmit the request information and/or coordination information based on the received first hybrid automatic repeat request feedback HARQ-ACK information or second HARQ-ACK information, including at least one item:
  • the first terminal determines whether to retransmit the request information and/or the coordination information based on the first HARQ-ACK information;
  • the first terminal determines whether to retransmit the request information and/or based on the second HARQ-ACK information The coordination information.
  • the first terminal will determine whether to retransmit the request information and/or coordination information based on the first HARQ-ACK information; if the MAC The PDU or the MAC layer data packet includes other information except the MAC CE carrying the request information and/or coordination information, and the first terminal will determine whether to retransmit the request information and/or coordination information based on the second HARQ-ACK information.
  • the other information included in the MAC PDU or the MAC layer data packet may be other direct link shared channel (SideLink-Shared Channel, SL-SCH).
  • the second terminal obtains the request information and/or coordination information by demodulating the 2nd stage SCI.
  • the second terminal obtains request information and/or coordination information by demodulating 2nd stage SCI. If the MAC PDU or MAC layer data packet only includes MAC CE carrying request information and/or coordination information, as long as the 2nd stage SCI is demodulated If successful, the second terminal generates and feeds back the first HARQ-ACK information as ACK, then the first terminal stops transmitting request information and/or coordination information after receiving the first HARQ-ACK information; or the 2nd stage SCI demodulation is unsuccessful , the second terminal generates and feeds back the first HARQ-ACK information as NACK, then the first terminal retransmits the request information and/or coordination information after receiving the first HARQ-ACK information; or regardless of whether the 2nd stage SCI demodulation is successful , the first terminal does not receive the first HARQ-ACK information, and retransmits the request information and/or coordination information.
  • the second terminal acquires request information and/or coordination information by demodulating the 2nd stage SCI, if the MAC PDU or the MAC layer data packet includes other information except the MAC CE carrying the request information and/or coordination information, regardless of the 2nd stage Whether the SCI demodulation is successful, the second terminal generates and feeds back the second HARQ-ACK information based on whether the MAC PDU or MAC layer data packet demodulation is successful, and the first terminal determines whether to retransmit the request information and/or based on the second HARQ-ACK information coordination information.
  • the method before the first terminal determines whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information, the method further includes:
  • the first terminal determines whether the MAC PDU or the MAC layer data packet includes other information except the MAC CE;
  • the first terminal determines whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information, including:
  • the first terminal retransmits the request information and/or or said coordination information;
  • the first terminal stops transmitting the request information and/or or said coordination information;
  • the first terminal stops transmitting the request information and/or the Coordination information described above.
  • the second terminal obtains request information and/or coordination information by demodulating the 2nd stage SCI, if the MAC PDU or MAC layer data packet includes other information except the MAC CE carrying the request information and/or coordination information, regardless of the 2nd stage Whether the SCI demodulation is successful, the second terminal successfully generates and feeds back the second HARQ-ACK information as ACK after the MAC PDU or MAC layer data packet demodulation is successful, then the first terminal stops transmitting after receiving the second HARQ-ACK information request information and/or coordination information; or the second terminal fails to generate and feedback the second HARQ-ACK information as NACK when the MAC PDU or MAC layer data packet demodulation is unsuccessful, then the first terminal receives the second HARQ-ACK information After that, retransmit the request information and/or coordination information.
  • the first terminal receives the second 2.
  • the HARQ-ACK information is negative information or confirmation information, and the transmission of request information and/or coordination information is stopped.
  • the first terminal will think that the second terminal has correctly demodulated the 2nd stage SCI after receiving the second HARQ-ACK information, and obtain the request information and /or coordination information.
  • the second HARQ-ACK information can be obtained by demodulating 2nd stage SCI at the second terminal Request information and/or coordination information, and the received MAC PDU or MAC layer data packet includes request information and/or coordination information
  • the second terminal In the case of information other than the MAC CE, the second terminal generates and sends it according to whether the demodulation of the MAC PDU or the MAC layer data packet is successful.
  • step 201 before step 201, it also includes:
  • the first terminal sends first information, and/or receives second information sent by the second terminal;
  • the first information is used to indicate whether the first terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI;
  • the second information is used to indicate whether the second terminal Obtain the request information and/or the coordination information by demodulating the second-stage SCI.
  • the first terminal and the second terminal can notify each other whether to obtain request information and/or coordination information by demodulating the 2nd stage SCI. Specifically, they can notify each other in the form of UE capability.
  • the first terminal transmits the request information and/or the coordination information multiple times, including:
  • the first terminal retransmits the request information and/or the coordination information in a preset manner
  • the preset method includes at least one of the following:
  • the first terminal retransmits the request information by at least one of blind retransmission (blind retransmission) and retransmission (HARQ based retransmission) based on the received first HARQ-ACK information or second HARQ-ACK information and/or coordination information.
  • blind retransmission blind retransmission
  • HARQ based retransmission retransmission
  • At least the 2nd stage SCI/MAC CE carrying request information/coordination information does not need to carry HARQ-ACK retransmission related parameters to reduce signaling overhead.
  • For blind retransmission and HARQ based retransmission it is possible to dynamically balance resource utilization and reliability.
  • the first information field of the coordination information indicates resource selection information, where the resource selection information includes favoring or not favoring the target transmission resource selected by the second terminal;
  • the time-frequency resource indicated by the first information field, or the time-domain resource where the time-frequency resource indicated by the first information field is located is the target transmission resource selected by the second terminal that is inclined or not inclined.
  • the first information domain of the coordination information may be the resource combination domain (resource combination(s)) and the initial resource location domain (first resource location(s)).
  • the first information field indicates (directly or indirectly) whether or not to prefer the target transmission resource (preferred resource/non-preferred resource) selected by the second terminal.
  • the time-frequency resource indicated by the first information field is the preferred resource/non-preferred resource; on the other hand, the time-domain resource where the time-frequency resource indicated by the first information field is located is the preferred resource/non-preferred resource.
  • the specific indication field other than the first information field is used to indicate at least one of the following situations, that is, the time-frequency resource indicated by the first information field is the target transmission resource selected by the second terminal that is inclined or not inclined, or The time-domain resource where the time-frequency resource indicated by the first information field is located is the target transmission resource selected by the second terminal that is inclined or not inclined
  • the two interpretation modes of the indication information in the first information field can distinguish preferred resource/non-preferred resource based on hidden node issue or HD issue.
  • the first terminal sends the first stage SCI (1st stage SCI) and/or 2nd stage SCI; the 2nd stage SCI is used to transmit request information and/or coordination information; the 1st stage The stage SCI and/or the 2nd stage SCI indicate at least one of the following target information:
  • the 2nd stage SCI is used to transmit request information
  • the 2nd stage SCI is used to transmit coordination information
  • the 2nd stage SCI is used to transmit request information, and the request information is used to request the second terminal to provide resources that tend to be selected by the first terminal;
  • the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide the second terminal with resources that tend to be selected by the second terminal;
  • the 2nd stage SCI is used to transmit request information, and the request information is used to request the second terminal to provide resources that are not inclined to be selected by the first terminal;
  • the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide the second terminal with resources that are not inclined to be selected by the second terminal.
  • the 1st stage SCI and/or the 2nd stage SCI can indicate that the 2nd stage SCI is used to transmit request information and/or target information of coordination information; the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the second terminal to provide resources that are inclined to be selected by the first terminal, and the coordination information is used to provide target information to the second terminal that is inclined to resources selected by the second terminal; the 2nd stage SCI uses For transmitting request information and/or coordination information, and the request information is used to request the second terminal to provide resources that are not inclined to be selected by the first terminal, and the coordination information is used to provide the second terminal with resources that are not inclined to be selected by the second terminal target information.
  • the second terminal When the second terminal acquires the 1st stage SCI and/or 2nd stage SCI, it can learn the target information based on the indication of the 1st stage SCI and/or 2nd stage SCI, and adaptively demodulate the 2nd stage SCI for subsequent processing.
  • the first-stage SCI indicates the target information through a reserved bit (reserved bit) and/or a second-stage SCI format (2nd SCI format) indication field, and the second-stage SCI and The first stage of SCI association.
  • method 1 the 2nd SCI format indication field in the 1st SCI is used to indicate the 2nd SCI format2-C (that is, the 2nd SCI used to transmit request information), and the 2nd SCI format 2-D (2nd SCI used to transmit coordination information).
  • '10' indicates 2nd SCI format 2-C
  • '11' indicates 2nd SCI format 2-D; of course, the reverse is also true.
  • Method 2 2 bits of the reserved bits (such as 2 ⁇ 4 bits) in the 1st SCI are used to indicate the 2nd SCI format. Among them, if the reserved bits are greater than 2 bits, then 2 bits are the last 2 bits or the first 2 bits in the reserved bits. All 0s are reserved, '00' indicates SCI that can be sent to a specific terminal for demodulation, '01' indicates that the 2nd SCI format can be used to transmit request information, '10' indicates that the 2nd SCI format can be used to transmit coordination information, '11 'Indicates that 2nd SCI format can be used to transmit request information and coordination information.
  • Method 3 1bit/2 code points in 1st SCI indicate that 2nd SCI format is used for preferred resource or non-preferred resource. Among them, one code point indicates that the 2nd SCI format is used for the request information and/or coordination information associated with the preferred resource, and one code point indicates that the 2nd SCI format is used for the request information and/or coordination information associated with the non-preferred resource.
  • any target information can be indicated by a code point, such as:
  • a code point indicates that the 2nd stage SCI is used to transmit the request information
  • a code point indicates that 2nd stage SCI is used to transmit coordination information
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information
  • a code point indicates that the 2nd stage SCI is used to transmit request information, and the request information is used to request the second terminal to provide resources that tend to be selected by the first terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide the second terminal with resources that tend to be selected by the second terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the second terminal to provide resources preferred by the first terminal, and the coordination information is used to provide preferred resources to the second terminal resources selected by the second terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information, and the request information is used to request the second terminal to provide resources that are not inclined to be selected by the first terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide the second terminal with resources that are not inclined to be selected by the second terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the second terminal to provide resources that are not inclined to be selected by the first terminal, and the coordination information is used to provide the second terminal with The resources selected by the second terminal are not favored.
  • bit(s) in the reserved bits for example, the first N bits or the last N bits
  • other bit(s) can be used for other purposes.
  • the 1st stage SCI and the 2nd stage SCI jointly indicate the target information
  • the 1st stage SCI is associated with the 2nd stage SCI
  • the 1st stage SCI indicates that the 2nd stage SCI is used to transmit any one of request information and coordination information, and the 2nd stage SCI indicates the target information through at least one information field.
  • the at least one information field may be a specific indication field dedicated to indicating the above target information, or may be a non-specific indication field of 2nd stage SCI such as resource combination(s) and/or first resource location(s).
  • the target information can be indicated by the special code point of the non-specific indication field, such as the fixed code point in resource combination(s) and/or first resource location(s) is all 0 or all 1 to indicate 2nd stage SCI is used to transmit request information, and other code points indicate that 2nd stage SCI is used to transmit coordination information.
  • 1st SCI and 2nd SCI jointly indicate target information, including:
  • the 2nd SCI format field in the 1st SCI is used to indicate the 2nd SCI format 2-C, indicating that the 2nd SCI format 2-C can be used to transmit request information and/or coordination information; the first 2 bits of the 2nd SCI are used to indicate the information carried by the 2nd SCI Content, such as '00' indicates that 2nd SCI can be used to transmit request information, '01' indicates that 2nd SCI can be used to transmit coordination information, '10' indicates that 2nd SCI can be used to transmit request information and coordination information.
  • Method 2 1bit/2 code points in 1st SCI indicate that 2nd SCI is used for preferred resource or non-preferred resource, such as one code point indicates that 2nd SCI is used to transmit request information and/or coordination information associated with preferred resource, one code point Indicates that 2nd SCI is used to transmit request information and/or coordination information associated with non-preferred resource; the first 2 bits of 2nd SCI indicate the content carried by the 2nd SCI, such as '00' indicating that 2nd SCI can be used to transmit request information, '01' indicating 2nd SCI can be used to transmit coordination information, '10' indicates that 2nd SCI can be used for request information and coordination information.
  • the second-stage SCI can indicate the target information through at least one information field.
  • the fixed code point of at least one information field in the 2nd SCI indicates the target information, such as indicating that the 2nd SCI is used to transmit request information and/or coordination information; indicating that the 2nd SCI is used to request preferred resource and/or non- preferred resource.
  • 1st SCI means 1st stage SCI
  • 2nd SCI means 2nd stage SCI
  • the information transmission method of the embodiment of the present application can avoid the problem of too many retransmissions of transmission request information and/or coordination information, and the problem of increasing signaling overhead caused by too much information; and, for 2nd SCI transmission request information and/or coordination information Instructions to perform in order to complete the demodulation of the adaptation.
  • an information transmission method in the embodiment of the present application includes:
  • Step 301 the second terminal receives request information and/or coordination information transmitted one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • the second terminal after receiving the request information sent by the first terminal one or more times, the second terminal can feed back coordination information based on the request of the first terminal, so that the first terminal can know the SL resource selection information provided by the second terminal, and according to The SL resource selection information performs resource selection;
  • the coordination information sent by the first terminal one or more times received by the second terminal may be feedback from the first terminal after the second terminal sends request information to the first terminal one or more times Yes, the second terminal can learn the SL resource selection information provided by the first terminal to the second terminal based on the received coordination information, so that the second terminal performs resource selection according to the SL resource selection information.
  • an enhanced resource allocation scheme is realized.
  • the second terminal after receiving the request information and/or the coordination information transmitted one or more times, the second terminal further includes:
  • the second terminal sends the first HARQ-ACK information or the second HARQ-ACK information
  • the first HARQ-ACK information is generated by the second terminal according to whether the second-stage SCI of the demodulation is successful, and the second-stage SCI carries the request information and/or the coordination information;
  • the second HARQ-ACK information is generated by the second terminal according to whether the demodulated MAC PDU or MAC layer data packet is successfully generated, and the MAC PDU or MAC layer data packet includes carrying the request information and/or the coordination MAC CE of the information.
  • the second terminal sending the first HARQ-ACK information includes:
  • the second terminal When the second terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI, the second terminal generates a corresponding the first HARQ-ACK information, and send the first HARQ-ACK information.
  • the second terminal generates corresponding first HARQ-ACK information according to whether demodulation of the second-stage SCI is successful, including:
  • the received MAC PDU or the MAC layer data packet only includes the MAC CE, and successfully demodulates the second-stage SCI, generating confirmation information
  • the second terminal sending the second HARQ-ACK information includes:
  • the second terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI, and the received MAC PDU or MAC layer data packet includes other information except the MAC CE In the case where, the second terminal generates corresponding second HARQ-ACK information according to whether the demodulation of the MAC PDU or the MAC layer data packet is successful, and sends the second HARQ-ACK information.
  • the request information and/or the coordination information will be obtained by demodulating the second-stage SCI for the second terminal, and the received MAC PDU or MAC layer data packet includes the request information and/or Or in the case of information other than the MAC CE of the coordination information, the first terminal can obtain the second HARQ-ACK information.
  • the second terminal may further include:
  • the second terminal sends second information, and/or receives the first information sent by the first terminal;
  • the first information is used to indicate whether the first terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI;
  • the second information is used to indicate whether the second terminal Obtain the request information and/or the coordination information by demodulating the second-stage SCI.
  • a method for indicating information transmission in the embodiment of the present application includes:
  • Step 401 the third terminal sends the first phase SCI and/or the second phase SCI;
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • the third terminal sends the first stage SCI (1st stage SCI) and/or the second stage SCI (2nd stage SCI) to the fourth terminal, and transmits request information and/or coordination information through the second stage SCI, the first stage The stage SCI and/or the second stage SCI indicates the target information, so that the fourth terminal receives the second stage SCI and completes demodulation of the second stage SCI for subsequent processing.
  • the 1st stage SCI and/or the 2nd stage SCI can indicate that the 2nd stage SCI is used to transmit request information and/or target information of coordination information; the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources that are inclined to be selected by the third terminal, and the coordination information is used to provide the fourth terminal with target information that is inclined to resources selected by the fourth terminal; the 2nd stage SCI uses For transmitting request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal target information.
  • the third terminal may be the first terminal in the above information transmission method embodiment, and the fourth terminal may be the second terminal in the above information transmission method embodiment; or, the third terminal It may be the second terminal in the above information transmission method embodiment, and the fourth terminal may be the first terminal in the above information transmission method embodiment.
  • the first-stage SCI indicates the target information through a reserved bit and/or a second-stage SCI format indication field, and the second-stage SCI is associated with the first-stage SCI.
  • method 1 the 2nd SCI format indication field in the 1st SCI is used to indicate the 2nd SCI format 2-C (that is, the 2nd SCI used to transmit request information), and the 2nd SCI format 2-D (2nd SCI used to transmit coordination information) .
  • '10' indicates 2nd SCI format 2-C
  • '11' indicates 2nd SCI format 2-D; of course, the reverse is also true.
  • Method 2 2 bits of the reserved bits (such as 2 ⁇ 4 bits) in the 1st SCI are used to indicate the 2nd SCI format. Among them, if the reserved bits are greater than 2 bits, then 2 bits are the last 2 bits or the first 2 bits in the reserved bits. All 0s are reserved, '00' indicates SCI that can be sent to a specific terminal for demodulation, '01' indicates that the 2nd SCI format can be used to transmit request information, '10' indicates that the 2nd SCI format can be used to transmit coordination information, '11 'Indicates that 2nd SCI format can be used to transmit request information and coordination information.
  • Method 3 1bit/2 code points in 1st SCI indicate that 2nd SCI format is used for preferred resource or non-preferred resource. Among them, one code point indicates that the 2nd SCI format is used for the request information and/or coordination information associated with the preferred resource, and one code point indicates that the 2nd SCI format is used for the request information and/or coordination information associated with the non-preferred resource.
  • any target information can be indicated by a code point, such as:
  • a code point indicates that the 2nd stage SCI is used to transmit the request information
  • a code point indicates that 2nd stage SCI is used to transmit coordination information
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information
  • a code point indicates that the 2nd stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources preferred by the third terminal, and the coordination information is used to provide the fourth terminal with a preferred resources selected by the fourth terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal;
  • a code point indicates that the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal, and the coordination information is used to provide the fourth terminal The resources selected by the fourth terminal are not favored.
  • bit(s) in the reserved bits for example, the first N bits or the last N bits
  • other bit(s) can be used for other purposes.
  • the first-stage SCI when the first-stage SCI and the second-stage SCI jointly indicate the target information, the first-stage SCI is associated with the second-stage SCI;
  • the first-stage SCI indicates that the second-stage SCI is used to transmit any one of request information and coordination information, and the second-stage SCI indicates the target information through at least one information field.
  • the at least one information field may be a specific indication field dedicated to indicating the above target information, or may be a non-specific indication field of 2nd stage SCI such as resource combination(s) and/or first resource location(s).
  • the target information can be indicated by the special code point of the non-specific indication field, such as the fixed code point in resource combination(s) and/or first resource location(s) is all 0 or all 1 to indicate 2nd stage SCI is used to transmit request information, and other code points indicate that 2nd stage SCI is used to transmit coordination information.
  • 1st SCI and 2nd SCI jointly indicate target information, including:
  • the 2nd SCI format field in the 1st SCI is used to indicate the 2nd SCI format 2-C, indicating that the 2nd SCI format 2-C can be used to transmit request information and/or coordination information; the first 2 bits of the 2nd SCI are used to indicate the information carried by the 2nd SCI Content, such as '00' indicates that 2nd SCI can be used to transmit request information, '01' indicates that 2nd SCI can be used to transmit coordination information, '10' indicates that 2nd SCI can be used to transmit request information and coordination information.
  • Method 2 1bit/2 code points in 1st SCI indicate that 2nd SCI is used for preferred resource or non-preferred resource, such as one code point indicates that 2nd SCI is used to transmit request information and/or coordination information associated with preferred resource, one code point Indicates that 2nd SCI is used to transmit request information and/or coordination information associated with non-preferred resource; the first 2 bits of 2nd SCI indicate the content carried by the 2nd SCI, such as '00' indicating that 2nd SCI can be used to transmit request information, '01' indicating 2nd SCI can be used to transmit coordination information, '10' indicates that 2nd SCI can be used for request information and coordination information.
  • the second-stage SCI can indicate the target information through at least one information field.
  • the fixed code point of at least one information field in the 2nd SCI indicates the target information, such as indicating that the 2nd SCI is used to transmit request information and/or coordination information; indicating that the 2nd SCI is used to request preferred resource and/or non- preferred resource.
  • 1st SCI means 1st stage SCI
  • 2nd SCI means 2nd stage SCI
  • the receiver can complete the adaptive demodulation processing.
  • a method for indicating information transmission in the embodiment of the present application includes:
  • Step 501 the fourth terminal receives the first phase SCI and/or the second phase SCI;
  • the second stage SCI is used to transmit request information and/or coordination information, the request information is used to request the fourth terminal to feed back coordination information, and the coordination information is used to provide the fourth terminal with a direct link Road resource selection information;
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • the fourth terminal receives the 1st stage SCI and/or 2nd stage SCI sent by the third terminal, and transmits request information and/or coordination information through the second stage SCI, the first stage SCI and/or the second stage SCI
  • the target information is indicated, and the demodulation is completed after receiving the second-stage SCI for subsequent processing.
  • the 1st stage SCI and/or the 2nd stage SCI can indicate that the 2nd stage SCI is used to transmit request information and/or target information of coordination information; the 2nd stage SCI is used to transmit request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources that are inclined to be selected by the third terminal, and the coordination information is used to provide the fourth terminal with target information that is inclined to resources selected by the fourth terminal; the 2nd stage SCI uses For transmitting request information and/or coordination information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal target information.
  • the first-stage SCI indicates the target information through a reserved bit and/or a second-stage SCI format indication field, and the second-stage SCI is associated with the first-stage SCI.
  • the first-stage SCI is associated with the second-stage SCI
  • the first-stage SCI indicates that the second-stage SCI is used to transmit any one of request information and coordination information, and the second-stage SCI indicates the target information through at least one information field.
  • the information transmission method provided in the embodiment of the present application may be executed by an information transmission device.
  • the information transmission device provided in the embodiment of the present application is described by taking the information transmission device executing the information transmission method as an example.
  • an information transmission device 600 in the embodiment of the present application includes:
  • the first sending module 610 is configured to transmit request information and/or coordination information one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide the second terminal with direct link resource selection information
  • the first sending module is also used for:
  • the device also includes:
  • a determining module configured to determine whether to retransmit the request information and/or coordination information based on the received first HARQ-ACK information or second HARQ-ACK information feedback;
  • the first HARQ-ACK information is generated by the second terminal according to whether the second-stage direct link control information SCI is successfully demodulated, and the second-stage SCI carries the request information and/or the coordination information;
  • the second HARQ-ACK information is generated by the second terminal according to whether the demodulated media access control protocol data unit MAC PDU or MAC layer data packet is successfully generated, and the MAC PDU or MAC layer data packet includes carrying the request information and/or The media access control control element MAC CE of the coordination information.
  • the determination module is also used for:
  • the received first HARQ-ACK information is negative information, retransmit the request information and/or the coordination information; or,
  • the received first HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information.
  • the determination module is also used for:
  • the received second HARQ-ACK information is negative information, retransmit the request information and/or the coordination information; or,
  • the received second HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information.
  • the determination module is also used for:
  • the received second HARQ-ACK information is negative information or confirmation information, stop transmitting the request information and/or the coordination information; or,
  • the second HARQ-ACK information If the second HARQ-ACK information is not received, retransmit the request information and/or the coordination information.
  • the determination module is also used for:
  • the MAC PDU or the MAC layer data packet only includes the MAC CE, determine whether to retransmit the request information and/or the coordination information based on the first HARQ-ACK information;
  • the MAC PDU or the MAC layer data packet includes information other than the MAC CE, determine whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information.
  • the device also includes:
  • a processing module configured to determine whether the MAC PDU or the MAC layer data packet includes other information except the MAC CE;
  • the determining module is also used for:
  • the MAC PDU or the MAC layer data packet includes other information except the MAC CE, and the second HARQ-ACK information is negative information, retransmit the request information and/or the coordination information ;
  • the second HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information ;
  • the MAC PDU or the MAC layer data packet only includes the MAC CE, and the second HARQ-ACK information is negative information or confirmation information, stop transmitting the request information and/or the coordination information.
  • the device also includes:
  • a first interaction module configured to send first information, and/or receive second information sent by the second terminal
  • the first information is used to indicate whether the first terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI;
  • the second information is used to indicate whether the second terminal Obtain the request information and/or the coordination information by demodulating the second-stage SCI.
  • the first sending module is further configured to retransmit the request information and/or the coordination information in a preset manner;
  • the preset method includes at least one of the following:
  • the first information field of the coordination information indicates resource selection information, where the resource selection information includes favoring or not favoring the target transmission resource selected by the second terminal;
  • the time-frequency resource indicated by the first information field, or the time-domain resource where the time-frequency resource indicated by the first information field is located is the target transmission resource selected by the second terminal that is inclined or not inclined.
  • the device sends request information to the second terminal one or more times, requesting the second terminal to feed back coordination information, so as to know the SL resource selection information provided by the second terminal, and perform resource selection according to the SL resource selection information; the device It is also possible to provide SL resource selection information to the second terminal by feeding back coordination information to the second terminal one or more times after receiving the request information sent by the second terminal, so that the second terminal can perform resource selection according to the SL resource selection information . In this way, through the information transmission with the second terminal, an enhanced resource allocation scheme is realized.
  • this device is a device to which the above-mentioned information transmission method performed by the first terminal is applied, and the implementation of the above method embodiment is applicable to this device, and can also achieve the same technical effect.
  • an information transmission device 700 in the embodiment of the present application includes:
  • the first receiving module 710 is configured to receive request information and/or coordination information for one or more transmissions
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • the device also includes:
  • the HARQ-ACK information feedback module is used to send the first HARQ-ACK information or the second HARQ-ACK information;
  • the first HARQ-ACK information is generated by the second terminal according to whether the second-stage SCI of the demodulation is successful, and the second-stage SCI carries the request information and/or the coordination information;
  • the second HARQ-ACK information is generated by the second terminal according to whether the demodulated MAC PDU or MAC layer data packet is successfully generated, and the MAC PDU or MAC layer data packet includes carrying the request information and/or the coordination MAC CE of the information.
  • the HARQ-ACK information feedback module is also used for:
  • the second terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI, according to whether the demodulation of the second-stage SCI is successful, generate the corresponding first HARQ- ACK information, and send the first HARQ-ACK information.
  • the HARQ-ACK information feedback module is also used for:
  • the received MAC PDU or the MAC layer data packet only includes the MAC CE, and successfully demodulates the second-stage SCI, generating confirmation information
  • the HARQ-ACK information feedback module is also used for:
  • the second terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI, and the received MAC PDU or MAC layer data packet includes other information except the MAC CE In the case, according to whether the demodulation of the MAC PDU or the MAC layer data packet is successful, the corresponding second HARQ-ACK information is generated, and the second HARQ-ACK information is sent.
  • the device also includes:
  • a second interaction module configured to send second information, and/or receive first information sent by the first terminal
  • the first information is used to indicate whether the first terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI;
  • the second information is used to indicate whether the second terminal Obtain the request information and/or the coordination information by demodulating the second-stage SCI.
  • the device After receiving the request information sent by the first terminal one or more times, the device can feed back the coordination information based on the request of the first terminal, so that the first terminal can know the SL resource selection information provided to it, and perform an operation based on the SL resource selection information.
  • Resource selection The coordination information sent by the first terminal one or more times received by the device may be fed back by the first terminal after receiving the request information sent to it one or more times, and the device can be based on the received coordination information The information acquires SL resource selection information provided by the first terminal to the apparatus, so that the apparatus performs resource selection according to the SL resource selection information. In this way, through information transmission with the first terminal, an enhanced resource allocation scheme is realized.
  • this device is a device to which the above-mentioned information transmission method performed by the second terminal is applied, and the implementation manner of the above-mentioned method embodiment is applicable to this device, and can also achieve the same technical effect.
  • an information transmission indicating device 800 includes:
  • the second sending module 810 is configured to send the first-stage SCI and/or the second-stage SCI;
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • the first-stage SCI indicates the target information through a reserved bit and/or a second-stage SCI format indication field, and the second-stage SCI is associated with the first-stage SCI.
  • the first-stage SCI is associated with the second-stage SCI
  • the first-stage SCI indicates that the second-stage SCI is used to transmit any one of request information and coordination information, and the second-stage SCI indicates the target information through at least one information field.
  • the device sends the first-stage SCI and/or the second-stage SCI to the fourth terminal, and transmits request information and/or coordination information through the second-stage SCI, and the first-stage SCI and/or the second-stage SCI indicate the
  • the above target information is used to enable the fourth terminal to receive the second-stage SCI and complete demodulation of the second-stage SCI for subsequent processing.
  • this device applies the above-mentioned information transmission instruction method performed by the third terminal, and the implementation of the above-mentioned method embodiment is applicable to this device, and can also achieve the same technical effect.
  • an information transmission indicating device 900 includes:
  • the second receiving module 910 is configured to receive the first phase SCI and/or the second phase SCI;
  • the second stage SCI is used to transmit request information and/or coordination information
  • the request information is used to request the fourth terminal to feed back coordination information
  • the coordination information is used to provide the fourth terminal with direct link resources select information
  • the first-stage SCI and/or the second-stage SCI indicate at least one of the following target information:
  • the second stage SCI is used to transmit request information
  • the second stage SCI is used to transmit coordination information
  • the second stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that tend to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide resources tending to be selected by the fourth terminal to the fourth terminal;
  • the second-stage SCI is used to transmit request information, and the request information is used to request the fourth terminal to provide resources that are not inclined to be selected by the third terminal;
  • the second-stage SCI is used to transmit coordination information, and the coordination information is used to provide the fourth terminal with resources that are not inclined to be selected by the fourth terminal.
  • the first-stage SCI indicates the target information through a reserved bit and/or a second-stage SCI format indication field, and the second-stage SCI is associated with the first-stage SCI.
  • the first-stage SCI is associated with the second-stage SCI
  • the first-stage SCI indicates that the second-stage SCI is used to transmit any one of request information and coordination information, and the second-stage SCI indicates the target information through at least one information field.
  • the device receives the first-stage SCI and/or the second-stage SCI sent by the third terminal, transmits request information and/or coordination information through the second-stage SCI, and the first-stage SCI and/or the second-stage SCI indicates The target information is demodulated after receiving the second-stage SCI for subsequent processing.
  • this device applies the above-mentioned information transmission instruction method performed by the fourth terminal, and the implementation of the above-mentioned method embodiment is applicable to this device, and can also achieve the same technical effect.
  • the apparatus in this embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip.
  • the electronic device may be a terminal, or other devices other than the terminal.
  • the terminal may include, but not limited to, the types of terminal 11 listed above, and other devices may be servers, Network Attached Storage (NAS), etc., which are not specifically limited in this embodiment of the present application.
  • NAS Network Attached Storage
  • this embodiment of the present application also provides a communication device 1000, including a processor 1001 and a memory 1002, and the memory 1002 stores programs or instructions that can run on the processor 1001, such as , when the communication device 1000 is a terminal, when the program or instruction is executed by the processor 1001, the above-mentioned information transmission method executed by the first terminal, or the information transmission method executed by the second terminal, or the information transmission method executed by the third terminal is implemented.
  • the transmission instruction method, or the various steps of the embodiment of the information transmission instruction method executed by the fourth terminal can achieve the same technical effect, and will not be repeated here to avoid repetition.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, and the communication interface is used to transmit request information and/or coordination information one or more times; wherein, the request information is used to request the second terminal to feed back the coordination information,
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • This terminal embodiment corresponds to the above-mentioned first 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. 11 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1100 includes, but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110. At least some parts.
  • the terminal 1100 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 1110 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 11 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1104 may include a graphics processing unit (Graphics Processing Unit, GPU) 11041 and a microphone 11042, and the graphics processor 11041 is used in a video capture mode or an image capture mode by an image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072 .
  • Touch panel 11071 also called touch screen.
  • the touch panel 11071 can include two parts: a touch detection device and a touch controller.
  • Other input devices 11072 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 1101 may transmit the downlink data from the network side device to the processor 1110 for processing after receiving it; in addition, the radio frequency unit 1101 may send uplink data to the network side device.
  • the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 1109 can be used to store software programs or instructions as well as various data.
  • the memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playing function, image playback function, etc.), etc.
  • memory 1109 may include volatile memory or nonvolatile memory, or, memory 1109 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM erasable programmable read-only memory
  • Electrical EPROM Electrical EPROM
  • EEPROM electronically programmable Erase Programmable Read-Only Memory
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch link DRAM , SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM , SLDRAM
  • Direct Memory Bus Random Access Memory Direct Rambus
  • the processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1110 .
  • the radio frequency unit 1101 is used to transmit request information and/or coordination information one or more times;
  • the request information is used to request the second terminal to feed back coordination information
  • the coordination information is used to provide direct link resource selection information to the second terminal.
  • the radio frequency unit 1101 is further configured to transmit the request information and/or the coordination information one or more times based on preset retransmission times.
  • the processor 1110 is configured to feed back HARQ-ACK information or second HARQ-ACK information based on the received first hybrid automatic repeat request, and determine whether to retransmit the request information and/or coordination information;
  • the first HARQ-ACK information is generated by the second terminal according to whether the second-stage direct link control information SCI is successfully demodulated, and the second-stage SCI carries the request information and/or the coordination information;
  • the second HARQ-ACK information is generated by the second terminal according to whether the demodulated media access control protocol data unit MAC PDU or MAC layer data packet is successfully generated, and the MAC PDU or MAC layer data packet includes carrying the request information and/or The media access control control element MAC CE of the coordination information.
  • the processor 1110 is further configured to retransmit the request information and/or the coordination information when the received first HARQ-ACK information is negative information; or,
  • the received first HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information.
  • the processor 1110 is further configured to retransmit the request information and/or the coordination information when the received second HARQ-ACK information is negative information; or,
  • the received second HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information.
  • processor 1110 is also used for:
  • the second HARQ-ACK information If the second HARQ-ACK information is not received, retransmit the request information and/or the coordination information.
  • processor 1110 is also used for:
  • the MAC PDU or the MAC layer data packet only includes the MAC CE, determine whether to retransmit the request information and/or the coordination information based on the first HARQ-ACK information;
  • the MAC PDU or the MAC layer data packet includes information other than the MAC CE, determine whether to retransmit the request information and/or the coordination information based on the second HARQ-ACK information.
  • processor 1110 is also used for:
  • the MAC PDU or the MAC layer data packet includes other information except the MAC CE, and the second HARQ-ACK information is negative information, retransmit the request information and/or the coordination information ;
  • the second HARQ-ACK information is confirmation information, stop transmitting the request information and/or the coordination information ;
  • the MAC PDU or the MAC layer data packet only includes the MAC CE, and the second HARQ-ACK information is negative information or confirmation information, stop transmitting the request information and/or the coordination information.
  • the radio frequency unit 1101 is also used for:
  • the first information is used to indicate whether the first terminal obtains the request information and/or the coordination information by demodulating the second-stage SCI;
  • the second information is used to indicate whether the second terminal Obtain the request information and/or the coordination information by demodulating the second-stage SCI.
  • the radio frequency unit 1101 is also used for:
  • the preset method includes at least one of the following:
  • the first information field of the coordination information indicates resource selection information, where the resource selection information includes favoring or not favoring the target transmission resource selected by the second terminal;
  • the time-frequency resource indicated by the first information field, or the time-domain resource where the time-frequency resource indicated by the first information field is located is the target transmission resource selected by the second terminal that is inclined or not inclined.
  • the terminal as the first terminal, sends request information to the second terminal one or more times, requesting the second terminal to feed back coordination information, so as to learn the SL resource selection information provided by the second terminal, and to perform the operation based on the SL resource selection information.
  • Resource selection it is also possible to provide SL resource selection information to the second terminal by feeding back coordination information to the second terminal one or more times after receiving the request information sent by the second terminal, so that the second terminal selects the information according to the SL resource Make resource selections. In this way, through the information transmission with the second terminal, an enhanced resource allocation scheme is realized.
  • terminal shown in FIG. 11 can also be used as the above-mentioned second terminal, third terminal, or fourth terminal to implement a corresponding method, which will not be repeated here.
  • the embodiment of the present application also provides a readable storage medium.
  • the readable storage medium stores a program or an instruction.
  • the program or instruction is executed by the processor, the above information transmission method performed by the first terminal is implemented, or the information transmission method is implemented by the first terminal.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and the like.
  • 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 steps executed by the first terminal.
  • the information transmission method, or the information transmission method executed by the second terminal, or the information transmission instruction method executed by the third terminal, or the information transmission instruction method executed by the fourth terminal can achieve the same technology Effect, in order to avoid repetition, will not repeat them here.
  • 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 embodiment of the present application further provides a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to achieve the above-mentioned execution by the first terminal.
  • the information transmission method, or the information transmission method performed by the second terminal, or the information transmission indication method performed by the third terminal, or the information transmission indication method performed by the fourth terminal can achieve the same Technical effects, in order to avoid repetition, will not be repeated here.
  • the embodiment of the present application also provides a communication system, including: a terminal and a network side device, the terminal can be used to perform the above information transmission method performed by the first terminal, or the information transmission method performed by the second terminal, or by The steps of the information transmission instruction method executed by the third terminal, or the steps of the information transmission instruction method executed by the fourth terminal.
  • the embodiment of the present application also provides a communication device configured to execute the above information transmission method executed by the first terminal, or the information transmission method executed by the second terminal, or the information transmission instruction method executed by the third terminal, Alternatively, the steps of the method for indicating information transmission performed by the fourth terminal can achieve the same technical effect, and are not repeated here to avoid repetition.
  • 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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Abstract

本申请公开了一种信息传输方法、信息传输指示方法、装置及终端，属于通信技术领域，本申请实施例的信息传输方法包括：第一终端一次或多次传输请求信息和/或协调信息；其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。

Description

信息传输方法、信息传输指示方法、装置及终端
相关申请的交叉引用
本申请主张在2021年12月23日在中国提交的中国专利申请No.202111593230.X的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种信息传输方法、信息传输指示方法、装置及终端。
背景技术
在新无线(New Radio，NR)直通链路(SideLink，SL)技术中，资源分配方式有两种，一种是基于基站调度(mode 1)，另一种是基于终端自主资源选择。对于基站调度的资源分配方式，终端用于数据传输的直通链路资源由基站决定，并通过下行信令通知发送(Transmit，TX)终端(User Equipment，UE)对于自主选择的资源分配方式，终端在(预)配置的资源池中选择可用的传输资源，终端在资源选择之前先进行信道监听，根据信道监听结果选择出干扰较小的资源集合，再从所述资源集合中随机选择用于传输的资源。
但是，目前还提出了对资源分配方式的增强方案，由终端基于对端终端提供的资源信息，选择直通链路传输资源。如此，该种资源分配方式的增强方案如何实现，已成为亟待解决的技术问题。
发明内容
本申请实施例提供一种信息传输方法、信息传输指示方法、装置及终端，能够解决资源分配方式的增强方案的实现问题。
第一方面，提供了一种信息传输方法，该方法包括：
第一终端一次或多次传输请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
第二方面，提供了一种信息传输装置，包括：
第一发送模块，用于一次或多次传输请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向第二终端提供直通链路资源选择信息。
第三方面，提供了一种信息传输方法，包括：
第二终端接收一次或多次传输的请求信息和/或协调信息；
其中，所述请求信息用于请求所述第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
第四方面，提供了一种信息传输装置，包括：
第一接收模块，用于接收一次或多次传输的请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
第五方面，提供了一种信息传输指示方法，包括：
第三终端发送第一阶段直通链路控制信息(Sidelink Control Information，SCI)和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
第六方面，提供了一种信息传输指示装置，包括：
第二发送模块，用于发送第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
第七方面，提供了一种信息传输指示方法，包括：
第四终端接收第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求所述第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终 端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
第八方面，提供了一种信息传输指示装置，包括：
第二接收模块，用于接收第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
第九方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法，或者如第三方面所述的方法，或者如第五方面所述的方法，或者如第七方面所述的方法的步骤。
第十方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于执行如第一方面所述的方法，或者如第三方面所述的方法，或者如第五方面所述的方法，或者如第七方面所述的方法的步骤。
第十一方面，提供了一种通信系统，包括：终端及网络侧设备，所述终端可用于执行如第一方面所述的方法，或者如第三方面所述的方法，或者如第五方面所述的方法，或者如第七方面所述的方法的步骤。
第十二方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤，或者实现如第五方面所述的方法的步骤，或者实现如第七方面所述的方法的步骤。
第十三方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤，或者实现如第五方面所述的方法的步骤，或者实现如第七方面所述的方法的步骤。
第十四方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤，或者实现如第五方面所述的方法的步骤，或者实现如第七方面所述的方法的步骤。
在本申请实施例中，第一终端通过一次或多次向第二终端发送请求信息，请求第二终端反馈协调信息，以便第一终端获知第二终端向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；第一终端还能够在接收到第二终端发送的请求信息后，通过一次或多次向第二终端反馈协调信息，向第二终端提供SL资源选择信息，以使第二终端根据SL资源选择信息进行资源选择。如此，通过第一终端与第二终端的信息传输，实现了资源分配方式的增强方案。
附图说明
图1为本申请实施例的一种无线通信系统的框图；
图2为本申请实施例的第一终端侧的信息传输方法的流程示意图；
图3为本申请实施例的第二终端侧的信息传输方法的流程示意图；
图4为本申请实施例的第三终端侧的信息传输指示方法的流程示意图；
图5为本申请实施例的第四终端侧的信息传输指示方法的流程示意图；
图6为图2对应的装置模块结构示意图；
图7为图3对应的装置模块结构示意图；
图8为图4对应的装置模块结构示意图；
图9为图5对应的装置模块结构示意图；
图10为本申请实施例的通信设备的结构示意图；
图11为本申请实施例的终端的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer，TPC)、膝上型电脑(Laptop Computer，LC)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(Ultra-Mobile Personal Computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(Augmented Reality，AR)/虚拟现实(Virtual Reality，VR)设备、机器人、可穿戴式设备(Wearable Device，WD)、车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(Personal Computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network，RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、无线局域网络(Wireless Local Area Networks，WLAN)接入点或无线保真(Wireless Fidelity，WiFi)节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的信息传输方法、信息传输指示方法、装置及终端进行详细地说明。
如图2所示，本申请实施例的一种信息传输方法，包括：
步骤201，第一终端一次或多次传输请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
这样，通过上述步骤201，第一终端通过一次或多次向第二终端发送请求信息，请求第二终端反馈协调信息，以便第一终端获知第二终端向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；第一终端还能够在接收到第二终端发送的请求信息后，通过一次或多次向第二终端反馈协调信息，向第二终端提供SL资源选择信息，以使第二终端根据SL资源选择信息进行资源选择。如此，通过第一终端与第二终端的信息传输，实现了资源分配方式的增强方案。
其中，请求信息(request information)和/或协调信息(coordination information)由第二阶段(2nd stage)直通链路控制信息(Sidelink Control Information，SCI)或者媒体接入控制控制单元(Media Access Control Controlel Ement，MAC CE)携带。协调信息通过携带SL资源选择信息或指示SL资源选择信息，向第二终端提供SL资源选择信息。
可选地，步骤201包括：
所述第一终端基于预设重传次数，一次或多次传输所述请求信息和/或所述协调信息。
这里，预设重传次数是配置或预定义的。第一终端基于该预设重传次数，在该预设重传次数为0时，仅进行request information和/或coordination information的一次传输；在该预设重传次数大于0时，进行request information和/或coordination information的预设重传次数的重传。如此，避免request information和/或coordination information重传次数过多造成信令开销(signaling overhead)过大。另外，所述配置或预定义的预设重传次数也可以理解为配置或预定义重传次数的最大值，实际重传次数小于或者等于所述重传次数的最大值。
当然，在配置或预定义多个预设重传次数的情况下，第一终端采用最大值的预设重传次数多次传输request information和/或coordination information。
另外，可以配置或预定义传输次数或者传输次数的最大值，传输次数或者传输次数的最大值减去一次为所述预设重传次数或者重传次数的最大值。 另外，可以为请求信息和/或所述协调信息的传输单独配置或预定义传输次数或者传输次数的最大值，以保证系统能够灵活的控制请求信息和/或所述协调信息的传输的资源开销。
另外，该实施例中，一种方式，request information和/或coordination information的传输支持基于混合自动重传请求反馈(Hybrid Automatic Repeat reQuest ACKnowledgement，HARQ-ACK)的重传。因此，可选地，步骤201之前，还包括：
所述第一终端基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或者第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息；
其中，第一HARQ-ACK信息是第二终端根据解调第二阶段直通链路控制信息SCI是否成功生成的，第二阶段SCI携带所述请求信息和/或所述协调信息；
第二HARQ-ACK信息是所述第二终端根据解调媒体接入控制(Media Access Control，MAC)协议数据单元(Protocol Data Unit，PDU)或者MAC层数据包是否成功生成的，MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的媒体接入控制控制单元MAC CE。
这样，第一终端在接收到第一HARQ-ACK信息或者第二HARQ-ACK信息后，能够确定是否重传request information和/或coordination information。
可选地，所述第一终端基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
在接收到的所述第一HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第一HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第一HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
也就是说，若第一终端是基于第一HARQ-ACK信息来判断是否重传request information和/或coordination information，则能够确定在接收到第一HARQ-ACK信息为否定信息的情况下，重传request information和/或 coordination information；在接收到第一HARQ-ACK信息为确认信息的情况下，停止传输request information和/或coordination information；在没有接收到第一HARQ-ACK信息的情况下，重传request information和/或coordination information。之后第一终端按照所确定的内容，进行传输。
可选地，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
在接收到的所述第二HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第二HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
也就是说，若第一终端是基于第二HARQ-ACK信息来判断是否重传request information和/或coordination information，则确定一种实现是：第一终端会在接收到第二HARQ-ACK信息为否定信息的情况下，重传request information和/或coordination information；在接收到第二HARQ-ACK信息为确认信息的情况下，停止传输request information和/或coordination information；在没有接收到第二HARQ-ACK信息的情况下，重传request information和/或coordination information。之后第一终端按照所确定的内容，进行传输。
可选地，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
在接收到的所述第二HARQ-ACK信息为否定信息或确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息。
也就是说，若第一终端是基于第二HARQ-ACK信息来判断是否重传request information和/或coordination information，则确定另一种实现是：第一终端会在接收到第二HARQ-ACK信息为否定信息或确认信息的情况下(即只要接收到第二HARQ-ACK信息，不论第二HARQ-ACK信息为否定信息还 是确认信息)，停止传输request information和/或coordination information；在没有接收到第二HARQ-ACK信息的情况下，重传request information和/或coordination information。之后第一终端按照所确定的内容，进行传输。
该实施例中，第一HARQ-ACK信息是第二终端基于解调2nd stage SCI是否成功生成的；第二HARQ-ACK信息是基于解调MAC PDU或者MAC层数据包是否成功生成的。
其中，如果第二终端通过解调2nd stage SCI获取request information和/或coordination information的，则第二终端会在解调2nd stage SCI成功(即2nd stage SCI解调正确)时，生成第一HARQ-ACK信息，此时第一HARQ-ACK信息为确认信息ACK；反之，在解调2nd stage SCI未成功(失败)时，生成第一HARQ-ACK信息，此时第一HARQ-ACK信息为否定信息NACK。如此，当第一终端基于第一HARQ-ACK信息确定是否重传request information和/或coordination information，若第一终端收到该第一HARQ-ACK信息，且第一HARQ-ACK信息为ACK，第一终端会停止传输request information和/或coordination information；若第一终端收到该第一HARQ-ACK信息，且第一HARQ-ACK信息为NACK，第一终端会重传request information和/或coordination information；若第一终端没有收到第一HARQ-ACK信息，第一终端也会重传request information和/或coordination information。
当然，对于第二终端生成第一HARQ-ACK信息为ACK还是NACK，还可以基于解调2nd stage SCI是否成功，以及MAC PDU或者MAC层数据包是否仅包括携带request information和/或coordination information的MAC CE确定。即，在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且成功解调2nd stage SCI的情况下，生成第一HARQ-ACK信息为ACK；在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且未成功解调2nd stage SCI的情况下，生成第一HARQ-ACK信息为NACK。
此外，该实施例中，第一终端会根据MAC PDU或者MAC层数据包是否包括除MAC CE之外的其它信息，来判断第一终端基于第一HARQ-ACK信息还是第二HARQ-ACK信息，确定是否重传request information和/或coordination information。
可选地，所述第一终端基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息，包括以下至少一项：
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE的情况下，所述第一终端基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息。
这样，如果MAC PDU或者MAC层数据包仅包括携带request information和/或coordination information的MAC CE，第一终端则会基于第一HARQ-ACK信息确定是否重传request information和/或coordination information；如果MAC PDU或者MAC层数据包包括除携带request information和/或coordination information的MAC CE之外的其它信息，第一终端则会基于第二HARQ-ACK信息确定是否重传request information和/或coordination information。
其中，MAC PDU或者MAC层数据包包括的该其他信息可以是其他直通链路共享信道(SideLink-Shared Channel，SL-SCH)。
当然，此时第二终端是通过解调2nd stage SCI获取request information和/或coordination information的。
也就是说，第二终端通过解调2nd stage SCI获取request information和/或coordination information，如果MAC PDU或者MAC层数据包仅包括携带request information和/或coordination information的MAC CE，只要2nd stage SCI解调成功，第二终端生成并反馈第一HARQ-ACK信息为ACK，则第一终端接收到该第一HARQ-ACK信息后，停止传输request information和/或coordination information；或者2nd stage SCI解调不成功，第二终端生成并反馈第一HARQ-ACK信息为NACK，则第一终端接收到该第一HARQ-ACK信息后，重传request information和/或coordination information；或者不论2nd stage SCI解调是否成功，第一终端未接收到第一HARQ-ACK信息，重传 request information和/或coordination information。
此外，第二终端通过解调2nd stage SCI获取request information和/或coordination information，如果MAC PDU或者MAC层数据包包括除携带request information和/或coordination information的MAC CE之外的其它信息，不论2nd stage SCI解调是否成功，第二终端基于MAC PDU或者MAC层数据包解调是否成功生成并反馈第二HARQ-ACK信息，第一终端基于第二HARQ-ACK信息确定是否重传request information和/或coordination information。
可选地，该实施例中，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息之前，还包括：
所述第一终端确定所述MAC PDU或者MAC层数据包是否包括除所述MAC CE之外的其它信息；
所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE，所述第二HARQ-ACK信息为否定信息或确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
即，第二终端通过解调2nd stage SCI获取request information和/或coordination information，如果MAC PDU或者MAC层数据包包括除携带request information和/或coordination information的MAC CE之外的其它信息，不论2nd stage SCI解调是否成功，第二终端在该MAC PDU或者MAC层数据包解调成功生成并反馈第二HARQ-ACK信息为ACK，则第一终端接收到该第二HARQ-ACK信息后，停止传输request information和/或coordination  information；或者第二终端在该MAC PDU或者MAC层数据包解调未成功生成并反馈第二HARQ-ACK信息为NACK，则第一终端接收到该第二HARQ-ACK信息后，重传request information和/或coordination information。如果MAC PDU或者MAC层数据包仅包括携带request information和/或coordination information的MAC CE，不论2nd stage SCI解调是否成功，不论MAC PDU或者MAC层数据包解调是否成功，第一终端接收到第二HARQ-ACK信息为否定信息或确认信息，停止传输request information和/或coordination information。此时，第一终端不论第二HARQ-ACK信息是否定信息还是确认信息，第一终端接收到该第二HARQ-ACK信息，都会认为第二终端已正确解调2nd stage SCI，获得request information和/或coordination information。
当然，第二HARQ-ACK信息可以是在第二终端通过解调2nd stage SCI获取request information和/或coordination information，且接收到的MAC PDU或者MAC层数据包包括除携带request information和/或coordination information的MAC CE之外的其它信息的情况下，该第二终端根据解调MAC PDU或者MAC层数据包是否成功，生成并发送的。
可选地，该实施例中，步骤201之前，还包括：
所述第一终端发送第一信息，和/或接收所述第二终端发送的第二信息；
其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
即，第一终端能够和第二终端互相通知是否通过解调2nd stage SCI获取request information和/或coordination information。具体的，可以以终端能力(UE capability)的形式互相通知。
可选地，该实施例中，所述第一终端多次传输所述请求信息和/或所述协调信息，包括：
所述第一终端通过预设方式重传所述请求信息和/或所述协调信息；
其中，所述预设方式包括以下至少一项：
盲重传；
基于接收到的第一HARQ-ACK信息或者第二HARQ-ACK信息的重传。
即，第一终端通过盲重传(blind retransmission)，以及基于接收到的第一HARQ-ACK信息或者第二HARQ-ACK信息的重传(HARQ based retransmission)中的至少一种方式重传request information和/或coordination information。
其中，对于blind retransmission，至少携带request information/coordination information的2nd stage SCI/MAC CE中不需要携带HARQ-ACK重传相关参数，以减少signaling overhead。对于blind retransmission和HARQ based retransmission，可以在资源利用率与可靠性之间动态平衡。
可选地，该实施例中，所述协调信息的第一信息域指示资源选择信息，其中，资源选择信息包括倾向或者不倾向第二终端选择的目标传输资源；
所述第一信息域指示的时频资源，或者第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源。
对于2nd stage SCI/MAC CE中的coordination information，coordination information的第一信息域可以是资源组合域(resource combination(s))和初始资源位置域(first resource location(s))。第一信息域指示(直接或间接指示)倾向或者不倾向第二终端选择的目标传输资源(preferred resource/non-preferred resource)。一方面，第一信息域指示的时频资源即preferred resource/non-preferred resource；另一方面，第一信息域指示的时频资源所在的时域资源即preferred resource/non-preferred resource。
当然，第一信息域之外的特定指示域用于指示以下至少一种情况，即所述第一信息域指示的时频资源为所述倾向或者不倾向第二终端选择的目标传输资源，或者所述第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源
所述第一信息域指示信息的两种中解读方式，可以区分基于hidden node issue或基于HD issue而产生的preferred resource/non-preferred resource。
此外，可选地，该实施例中，第一终端发送第一阶段SCI(1st stage SCI)和/或2nd stage SCI；所述2nd stage SCI用于传输request information和/或coordination information；所述1st stage SCI和/或所述2nd stage SCI指示以下 至少一项目标信息：
所述2nd stage SCI用于传输请求信息；
所述2nd stage SCI用于传输协调信息
所述2nd stage SCI用于传输请求信息，且所述请求信息用于请求第二终端提供倾向第一终端选择的资源；
所述2nd stage SCI用于传输协调信息，且所述协调信息用于向第二终端提供倾向第二终端选择的资源；
所述2nd stage SCI用于传输请求信息，且所述请求信息用于请求第二终端提供不倾向第一终端选择的资源；
所述2nd stage SCI用于传输协调信息，且所述协调信息用于向第二终端提供不倾向第二终端选择的资源。
当然，所述1st stage SCI和/或所述2nd stage SCI能够指示所述2nd stage SCI用于传输请求信息和/或协调信息的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第二终端提供倾向第一终端选择的资源，所述协调信息用于向第二终端提供倾向第二终端选择的资源的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第二终端提供不倾向第一终端选择的资源，所述协调信息用于向第二终端提供不倾向第二终端选择的资源的目标信息。
而第二终端获取到该1st stage SCI和/或2nd stage SCI，就能够基于1st stage SCI和/或2nd stage SCI的指示，了解到目标信息，适应的解调2nd stage SCI，以便进行后续处理。
可选地，该实施例中，所述第一阶段SCI通过保留位(reserved bit)和/或第二阶段SCI格式(2nd SCI format)指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
例如，方式一：1st SCI中2nd SCI format指示域用于指示2nd SCI format2-C(即用于传输request information的2nd SCI)，2nd SCI format 2-D(用于传输coordination information的2nd SCI)。其中，‘10’指示2nd SCI format 2-C，‘11’指示2nd SCI format 2-D；当然，反之亦成立。
方式二：1st SCI中reserved bits(如2～4bits)的2bits用于指示2nd SCI  format。其中，若reserved bits大于2bits，则2bits为reserved bits中最后2bits或者是前2bits。全0预留，‘00’表示为可发送给特定终端用于解调的SCI，‘01’指示2nd SCI format可用于传输request information，‘10’指示2nd SCI format可用于传输coordination information，‘11’指示2nd SCI format可用于传输request information和coordination information。
方式三：1st SCI中1bit/2个码点指示2nd SCI format用于preferred resource或non-preferred resource。其中，一个码点指示2nd SCI format用于preferred resource关联的request information和/或coordination information，一个码点指示2nd SCI format用于non-preferred resource关联的request information和/或coordination information。
当然，在仅有1st stage SCI指示上述一项或多项目标信息的情况下，任一目标信息都可以由一个码点指示，如：
一个码点指示2nd stage SCI用于传输请求信息；
一个码点指示2nd stage SCI用于传输协调信息；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息；
一个码点指示2nd stage SCI用于传输请求信息，且所述请求信息用于请求第二终端提供倾向第一终端选择的资源；
一个码点指示2nd stage SCI用于传输协调信息，且所述协调信息用于向第二终端提供倾向第二终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第二终端提供倾向第一终端选择的资源，所述协调信息用于向第二终端提供倾向第二终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息，且所述请求信息用于请求第二终端提供不倾向第一终端选择的资源；
一个码点指示2nd stage SCI用于传输协调信息，且所述协调信息用于向第二终端提供不倾向第二终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第二终端提供不倾向第一终端选择的资源，所述协调信息用于向第二终端提供不倾向第二终端选择的资源。
这里，若reserved bits中的部分bit(s)(例如，前N bits或者后N bits)用于确定2nd SCI formats，其他bit(s)可用于其他用途。
可选地，该实施例中，1st stage SCI和2nd stage SCI联合指示所述目标信息的情况下，所述1st stage SCI与所述2nd stage SCI关联；
所述1st stage SCI指示所述2nd stage SCI用于传输请求信息和协调信息中的任意一个，所述2nd stage SCI通过至少一个信息域指示所述目标信息。
这里，该至少一个信息域可以是专用于指示上述目标信息的特定指示域，也可以是2nd stage SCI的非特定指示域如resource combination(s)和/或first resource location(s)。当然，对于非特定指示域，可以由该非特定指示域的特殊码点指示目标信息，如resource combination(s)和/或first resource location(s)中的固定码点全0或者全1指示2nd stage SCI用于传输request information，其它码点指示2nd stage SCI用于传输coordination information。
具体的，1st SCI和2nd SCI联合指示目标信息，包括：
方式一：1st SCI中2nd SCI format域用于指示2nd SCI format 2-C，表示2nd SCI format 2-C可用于传输request information和/或coordination information；2nd SCI前2bits用于指示该2nd SCI携带的内容，如‘00’指示2nd SCI可用于传输request information，‘01’指示2nd SCI可用于传输coordination information，‘10’指示2nd SCI可用于传输request information和coordination information。
方式二：1st SCI中1bit/2个码点指示2nd SCI用于preferred resource或non-preferred resource，如一个码点指示2nd SCI用于传输preferred resource关联的request information和/或coordination information，一个码点指示2nd SCI用于传输non-preferred resource关联的request information和/或coordination information；2nd SCI前2bits指示该2nd SCI携带的内容，如‘00’指示2nd SCI可用于传输request information，‘01’指示2nd SCI可用于传输coordination information，‘10’指示2nd SCI可用于request information和coordination information。
可选地，该实施例中，所述第二阶段SCI能够通过至少一个信息域指示所述目标信息。
具体的，2nd SCI中至少一个信息域的固定码点指示所述目标信息，如指示该2nd SCI用于传输request information和/或coordination information；指示该2nd SCI用于请求preferred resource和/或non-preferred resource。
需要说明的是，1st SCI即1st stage SCI，2nd SCI即2nd stage SCI。
本申请实施例的信息传输方法，能够避免传输请求信息和/或协调信息的重传次数过多，包含信息过多造成signaling overhead增加的问题；且，对于2nd SCI传输request information和/或coordination information进行的指示，以便完成适应的解调。
如图3所示，本申请实施例的一种信息传输方法，包括：
步骤301，第二终端接收一次或多次传输的请求信息和/或协调信息；
其中，所述请求信息用于请求所述第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
这样，第二终端接收第一终端通过一次或多次发送的请求信息后，能够基于第一终端的请求反馈协调信息，以便第一终端获知第二终端向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；第二终端接收的第一终端通过一次或多次发送的协调信息，可以是第一终端在第二终端通过一次或多次向第一终端发送请求信息后反馈的，第二终端能够基于接收到的协调信息获知第一终端向第二终端提供的SL资源选择信息，以使第二终端根据SL资源选择信息进行资源选择。如此，通过第一终端与第二终端的信息传输，实现了资源分配方式的增强方案。
可选地，所述第二终端接收一次或多次传输的所述请求信息和/或所述协调信息之后，还包括：
所述第二终端发送第一HARQ-ACK信息或者第二HARQ-ACK信息；
其中，所述第一HARQ-ACK信息是所述第二终端根据解调第二阶段SCI是否成功生成的，所述第二阶段SCI携带所述请求信息和/或所述协调信息；
所述第二HARQ-ACK信息是所述第二终端根据解调MAC PDU或者MAC层数据包是否成功生成的，所述MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的MAC CE。
可选地，所述第二终端发送所述第一HARQ-ACK信息，包括：
在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息的情况下，所述第二终端根据解调所述第二阶段SCI是否成功，生成对应的第一HARQ-ACK信息，并发送所述第一HARQ-ACK信息。
可选地，所述第二终端根据解调所述第二阶段SCI是否成功，生成对应的第一HARQ-ACK信息，包括：
在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且成功解调所述第二阶段SCI的情况下，生成确定信息；
在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且未成功解调所述第二阶段SCI的情况下，生成否定信息。
可选地，所述第二终端发送所述第二HARQ-ACK信息，包括：
在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息，且接收到的MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，所述第二终端根据解调所述MAC PDU或者MAC层数据包是否成功，生成对应的第二HARQ-ACK信息，并发送所述第二HARQ-ACK信息。
此时，将针对第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息，且接收到的MAC PDU或者MAC层数据包包括除携带所述请求信息和/或所述协调信息的MAC CE之外的其它信息的情况，第一终端能够获取到第二HARQ-ACK信息。
可选地，所述第二终端接收一次或多次传输的请求信息和/或协调信息之前，还包括：
所述第二终端发送第二信息，和/或接收所述第一终端发送的第一信息；
其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
需要说明的是，该方法是与上述由第一终端执行的信息传输方法配合实现的，上述方法实施例的实现方式适用于该方法，也能达到相同的技术效果。
如图4所示，本申请实施例的一种信息传输指示方法，包括：
步骤401，第三终端发送第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
这里，第三终端向第四终端发送第一阶段SCI(1st stage SCI)和/或第二阶段SCI(2nd stage SCI)，通过第二阶段SCI传输request information和/或coordination information，所述第一阶段SCI和/或所述第二阶段SCI指示所述目标信息，以使第四终端接收第二阶段SCI完成解调第二阶段SCI，以便后续进行处理。
当然，所述1st stage SCI和/或所述2nd stage SCI能够指示所述2nd stage SCI用于传输请求信息和/或协调信息的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源，所述协调信息用于向第四终端提供倾向第四终端选择的资源的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源，所述协调信息用于向第四终端提供不倾向第四终端选择的资源的目标信息。
应该知道的是，该实施例中，第三终端可以是上述信息传输方法实施例中的第一终端，第四终端可以是上述信息传输方法实施例中的第二终端；或者，该第三终端可以是上述信息传输方法实施例中的第二终端，第四终端可 以是上述信息传输方法实施例中的第一终端。
可选地，该实施例中，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
例如，方式一：1st SCI中2nd SCI format指示域用于指示2nd SCI format 2-C(即用于传输request information的2nd SCI)，2nd SCI format 2-D(用于传输coordination information的2nd SCI)。其中，‘10’指示2nd SCI format 2-C，‘11’指示2nd SCI format 2-D；当然，反之亦成立。
方式二：1st SCI中reserved bits(如2～4bits)的2bits用于指示2nd SCI format。其中，若reserved bits大于2bits，则2bits为reserved bits中最后2bits或者是前2bits。全0预留，‘00’表示为可发送给特定终端用于解调的SCI，‘01’指示2nd SCI format可用于传输request information，‘10’指示2nd SCI format可用于传输coordination information，‘11’指示2nd SCI format可用于传输request information和coordination information。
方式三：1st SCI中1bit/2个码点指示2nd SCI format用于preferred resource或non-preferred resource。其中，一个码点指示2nd SCI format用于preferred resource关联的request information和/或coordination information，一个码点指示2nd SCI format用于non-preferred resource关联的request information和/或coordination information。
当然，在仅有1st stage SCI指示上述一项或多项目标信息的情况下，任一目标信息都可以由一个码点指示，如：
一个码点指示2nd stage SCI用于传输请求信息；
一个码点指示2nd stage SCI用于传输协调信息；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息；
一个码点指示2nd stage SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
一个码点指示2nd stage SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源，所述协调信息用于 向第四终端提供倾向第四终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
一个码点指示2nd stage SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源；
一个码点指示2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源，所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
这里，若reserved bits中的部分bit(s)(例如，前N bits或者后N bits)用于确定2nd SCI formats，其他bit(s)可用于其他用途。
可选地，该实施例中，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
这里，该至少一个信息域可以是专用于指示上述目标信息的特定指示域，也可以是2nd stage SCI的非特定指示域如resource combination(s)和/或first resource location(s)。当然，对于非特定指示域，可以由该非特定指示域的特殊码点指示目标信息，如resource combination(s)和/或first resource location(s)中的固定码点全0或者全1指示2nd stage SCI用于传输request information，其它码点指示2nd stage SCI用于传输coordination information。
具体的，1st SCI和2nd SCI联合指示目标信息，包括：
方式一：1st SCI中2nd SCI format域用于指示2nd SCI format 2-C，表示2nd SCI format 2-C可用于传输request information和/或coordination information；2nd SCI前2bits用于指示该2nd SCI携带的内容，如‘00’指示2nd SCI可用于传输request information，‘01’指示2nd SCI可用于传输coordination information，‘10’指示2nd SCI可用于传输request information和coordination information。
方式二：1st SCI中1bit/2个码点指示2nd SCI用于preferred resource或non-preferred resource，如一个码点指示2nd SCI用于传输preferred resource 关联的request information和/或coordination information，一个码点指示2nd SCI用于传输non-preferred resource关联的request information和/或coordination information；2nd SCI前2bits指示该2nd SCI携带的内容，如‘00’指示2nd SCI可用于传输request information，‘01’指示2nd SCI可用于传输coordination information，‘10’指示2nd SCI可用于request information和coordination information。
可选地，该实施例中，所述第二阶段SCI能够通过至少一个信息域指示所述目标信息。
具体的，2nd SCI中至少一个信息域的固定码点指示所述目标信息，如指示该2nd SCI用于传输request information和/或coordination information；指示该2nd SCI用于请求preferred resource和/或non-preferred resource。
需要说明的是，1st SCI即1st stage SCI，2nd SCI即2nd stage SCI。
综上，对于2nd SCI传输request information和/或coordination information进行的指示，可便完成接收端进行适应的解调处理。
如图5所示，本申请实施例的一种信息传输指示方法，包括：
步骤501，第四终端接收第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求所述第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端 提供不倾向第四终端选择的资源。
这里，第四终端接收第三终端发送的1st stage SCI和/或2nd stage SCI，通过第二阶段SCI传输request information和/或coordination information，所述第一阶段SCI和/或所述第二阶段SCI指示所述目标信息，在接收第二阶段SCI后完成解调，以便后续进行处理。
当然，所述1st stage SCI和/或所述2nd stage SCI能够指示所述2nd stage SCI用于传输请求信息和/或协调信息的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源，所述协调信息用于向第四终端提供倾向第四终端选择的资源的目标信息；所述2nd stage SCI用于传输请求信息和/或协调信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源，所述协调信息用于向第四终端提供不倾向第四终端选择的资源的目标信息。
可选地，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
可选地，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
需要说明的是，该方法是与上述由第三终端执行的信息传输指示方法配合实现的，上述方法实施例的实现方式适用于该方法，也能达到相同的技术效果。
本申请实施例提供的信息传输方法，执行主体可以为信息传输装置。本申请实施例中以信息传输装置执行信息传输方法为例，说明本申请实施例提供的信息传输装置。
如图6所示，本申请实施例的一种信息传输装置600，包括：
第一发送模块610，用于一次或多次传输请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向第二终端提供直通链路资源选择信息。
可选地，所述第一发送模块还用于：
基于预设重传次数，一次或多次传输所述请求信息和/或所述协调信息。
可选地，所述装置还包括：
确定模块，用于基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或者第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息；
其中，第一HARQ-ACK信息是第二终端根据解调第二阶段直通链路控制信息SCI是否成功生成的，第二阶段SCI携带所述请求信息和/或所述协调信息；
第二HARQ-ACK信息是所述第二终端根据解调媒体接入控制协议数据单元MAC PDU或者MAC层数据包是否成功生成的，MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的媒体接入控制控制单元MAC CE。
可选地，所述确定模块还用于：
在接收到的所述第一HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第一HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第一HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，所述确定模块还用于：
在接收到的所述第二HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第二HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，所述确定模块还用于：
在接收到的所述第二HARQ-ACK信息为否定信息或确认信息的情况下，停止传输所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息 和/或所述协调信息。
可选地，所述确定模块还用于：
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE的情况下，基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息。
可选地，所述装置还包括：
处理模块，用于确定所述MAC PDU或者MAC层数据包是否包括除所述MAC CE之外的其它信息；
所述确定模块还用于：
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE，所述第二HARQ-ACK信息为否定信息或确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，所述装置还包括：
第一交互模块，用于发送第一信息，和/或接收所述第二终端发送的第二信息；
其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
可选地，所述第一发送模块还用于通过预设方式重传所述请求信息和/或所述协调信息；
其中，所述预设方式包括以下至少一项：
盲重传；
基于接收到的第一HARQ-ACK信息或者第二HARQ-ACK信息的重传。
可选地，所述协调信息的第一信息域指示资源选择信息，其中，资源选择信息包括倾向或者不倾向第二终端选择的目标传输资源；
所述第一信息域指示的时频资源，或者第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源。
该装置通过一次或多次向第二终端发送请求信息，请求第二终端反馈协调信息，以便获知第二终端向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；该装置还能够在接收到第二终端发送的请求信息后，通过一次或多次向第二终端反馈协调信息，向第二终端提供SL资源选择信息，以使第二终端根据SL资源选择信息进行资源选择。如此，通过与第二终端的信息传输，实现了资源分配方式的增强方案。
需要说明的是，该装置是应用了上述由第一终端执行的信息传输方法的装置，上述方法实施例的实现方式适用于该装置，也能达到相同的技术效果。
如图7所示，本申请实施例的一种信息传输装置700，包括：
第一接收模块710，用于接收一次或多次传输的请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
可选地，所述装置还包括：
HARQ-ACK信息反馈模块，用于发送第一HARQ-ACK信息或者第二HARQ-ACK信息；
其中，所述第一HARQ-ACK信息是所述第二终端根据解调第二阶段SCI是否成功生成的，所述第二阶段SCI携带所述请求信息和/或所述协调信息；
所述第二HARQ-ACK信息是所述第二终端根据解调MAC PDU或者MAC层数据包是否成功生成的，所述MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的MAC CE。
可选地，所述HARQ-ACK信息反馈模块还用于：
在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述 协调信息的情况下，根据解调所述第二阶段SCI是否成功，生成对应的第一HARQ-ACK信息，并发送所述第一HARQ-ACK信息。
可选地，所述HARQ-ACK信息反馈模块还用于：
在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且成功解调所述第二阶段SCI的情况下，生成确定信息；
在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且未成功解调所述第二阶段SCI的情况下，生成否定信息。
可选地，所述HARQ-ACK信息反馈模块还用于：
在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息，且接收到的MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，根据解调所述MAC PDU或者MAC层数据包是否成功，生成对应的第二HARQ-ACK信息，并发送所述第二HARQ-ACK信息。
可选地，所述装置还包括：
第二交互模块，用于发送第二信息，和/或接收第一终端发送的第一信息；
其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
该装置接收第一终端通过一次或多次发送的请求信息后，能够基于第一终端的请求反馈协调信息，以便第一终端获知向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；该装置接收的第一终端通过一次或多次发送的协调信息，可以是第一终端在接收到一次或多次向其发送的请求信息后反馈的，该装置能够基于接收到的协调信息获知第一终端向该装置提供的SL资源选择信息，以使该装置根据SL资源选择信息进行资源选择。如此，通过与第一终端的信息传输，实现了资源分配方式的增强方案。
需要说明的是，该装置是应用了上述由第二终端执行的信息传输方法的装置，上述方法实施例的实现方式适用于该装置，也能达到相同的技术效果。
如图8所示，本申请实施例的一种信息传输指示装置800，包括：
第二发送模块810，用于发送第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
可选地，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
可选地，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
该装置向第四终端发送第一阶段SCI和/或第二阶段SCI，通过第二阶段SCI传输request information和/或coordination information，所述第一阶段SCI和/或所述第二阶段SCI指示所述目标信息，以使第四终端接收第二阶段SCI完成解调第二阶段SCI，以便后续进行处理。
需要说明的是，该装置是应用了上述由第三终端执行的信息传输指示方法，上述方法实施例的实现方式适用于该装置，也能达到相同的技术效果。
如图9所示，本申请实施例的一种信息传输指示装置900，包括：
第二接收模块910，用于接收第一阶段SCI和/或第二阶段SCI；
其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信 息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
所述第二阶段SCI用于传输请求信息；
所述第二阶段SCI用于传输协调信息
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
可选地，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
可选地，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
该装置接收第三终端发送的第一阶段SCI和/或第二阶段SCI，通过第二阶段SCI传输request information和/或coordination information，所述第一阶段SCI和/或所述第二阶段SCI指示所述目标信息，在接收第二阶段SCI后完成解调，以便后续进行处理。
需要说明的是，该装置是应用了上述由第四终端执行的信息传输指示方法，上述方法实施例的实现方式适用于该装置，也能达到相同的技术效果。
本申请实施例中的装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network  Attached Storage，NAS)等，本申请实施例不作具体限定。
可选的，如图10所示，本申请实施例还提供一种通信设备1000，包括处理器1001和存储器1002，存储器1002上存储有可在所述处理器1001上运行的程序或指令，例如，该通信设备1000为终端时，该程序或指令被处理器1001执行时实现上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，通信接口用于一次或多次传输请求信息和/或协调信息；其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。该终端实施例与上述第一终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图11为实现本申请实施例的一种终端的硬件结构示意图。
该终端1100包括但不限于：射频单元1101、网络模块1102、音频输出单元1103、输入单元1104、传感器1105、显示单元1106、用户输入单元1107、接口单元1108、存储器1109以及处理器1110等中的至少部分部件。
本领域技术人员可以理解，终端1100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图11中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1104可以包括图形处理单元(Graphics Processing Unit，GPU)11041和麦克风11042，图形处理器11041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1106可包括显示面板11061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板11061。用户输入单元1107包括触控面板11071以及其他输入设备11072中的至少一种。触控面板11071，也称为触摸屏。触控面板11071可包括触摸检测装置和触摸 控制器两个部分。其他输入设备11072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1101接收来自网络侧设备的下行数据后，可以传输给处理器1110进行处理；另外，射频单元1101可以向网络侧设备发送上行数据。通常，射频单元1101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1109可用于存储软件程序或指令以及各种数据。存储器1109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1109可以包括易失性存储器或非易失性存储器，或者，存储器1109可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器1109包括但不限于这些和任意其它适合类型的存储器。
处理器1110可包括一个或多个处理单元；可选的，处理器1110集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1110中。
其中，射频单元1101用于一次或多次传输请求信息和/或协调信息；
其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
可选地，射频单元1101还用于基于预设重传次数，一次或多次传输所述请求信息和/或所述协调信息。
可选地，处理器1110用于基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或者第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息；
其中，第一HARQ-ACK信息是第二终端根据解调第二阶段直通链路控制信息SCI是否成功生成的，第二阶段SCI携带所述请求信息和/或所述协调信息；
第二HARQ-ACK信息是所述第二终端根据解调媒体接入控制协议数据单元MAC PDU或者MAC层数据包是否成功生成的，MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的媒体接入控制控制单元MAC CE。
可选地，处理器1110还用于在接收到的所述第一HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第一HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第一HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，处理器1110还用于在接收到的所述第二HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
在接收到的所述第二HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，处理器1110还用于：
在接收到的所述第二HARQ-ACK信息为否定信息或确认信息的情况下停止传输所述请求信息和/或所述协调信息；或者，
在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息。
可选地，处理器1110还用于：
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE的情况下，基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息。
可选地，处理器1110还用于：
确定所述MAC PDU或者MAC层数据包是否包括除所述MAC CE之外的其它信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息；
在所述MAC PDU或者MAC层数据包仅包括所述MAC CE，所述第二HARQ-ACK信息为否定信息或确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
可选地，射频单元1101还用于：
发送第一信息，和/或接收所述第二终端发送的第二信息；
其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
可选地，射频单元1101还用于：
通过预设方式重传所述请求信息和/或所述协调信息；
其中，所述预设方式包括以下至少一项：
盲重传；
基于接收到的第一HARQ-ACK信息或者第二HARQ-ACK信息的重传。
可选地，所述协调信息的第一信息域指示资源选择信息，其中，资源选择信息包括倾向或者不倾向第二终端选择的目标传输资源；
所述第一信息域指示的时频资源，或者第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源。
该终端作为第一终端，通过一次或多次向第二终端发送请求信息，请求第二终端反馈协调信息，以便获知第二终端向其提供的SL资源选择信息，并根据该SL资源选择信息进行资源选择；还能够在接收到第二终端发送的请求信息后，通过一次或多次向第二终端反馈协调信息，向第二终端提供SL资源选择信息，以使第二终端根据SL资源选择信息进行资源选择。如此，通过与第二终端的信息传输，实现了资源分配方式的增强方案。
还需要说明的是，图11所示的终端，还能够作为上述第二终端、第三终端或者第四终端，实现对应的方法，在此不再赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片， 芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：终端及网络侧设备，所述终端可用于执行上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法的步骤。
本申请实施例还提供了一种通信设备，被配置为执行上述由第一终端执行的信息传输方法，或者由第二终端执行的信息传输方法，或者由第三终端执行的信息传输指示方法，或者由第四终端执行的信息传输指示方法的步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的 技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (35)

  1. 一种信息传输方法，包括：
    第一终端一次或多次传输请求信息和/或协调信息；
    其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
  2. 根据权利要求1所述的方法，其中，所述第一终端一次或多次传输所述请求信息和/或所述协调信息，包括：
    所述第一终端基于预设重传次数，一次或多次传输所述请求信息和/或所述协调信息。
  3. 根据权利要求1或2所述的方法，其中，所述第一终端一次或多次传输所述请求信息和/或协调信息之前，还包括：
    所述第一终端基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或者第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息；
    其中，第一HARQ-ACK信息是第二终端根据解调第二阶段直通链路控制信息SCI是否成功生成的，第二阶段SCI携带所述请求信息和/或所述协调信息；
    第二HARQ-ACK信息是所述第二终端根据解调媒体接入控制协议数据单元MAC PDU或者MAC层数据包是否成功生成的，MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的媒体接入控制控制单元MAC CE。
  4. 根据权利要求3所述的方法，其中，所述第一终端基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
    在接收到的所述第一HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第一HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
    在接收到的所述第一HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
  5. 根据权利要求3所述的方法，其中，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
    在接收到的所述第二HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第二HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；或者，
    在接收到的所述第二HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
  6. 根据权利要求3所述的方法，其中，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息，包括：
    在接收到的所述第二HARQ-ACK信息为否定信息或确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第二HARQ-ACK信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息。
  7. 根据权利要求3所述的方法，其中，所述第一终端基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息，包括以下至少一项：
    在所述MAC PDU或者MAC层数据包仅包括所述MAC CE的情况下，所述第一终端基于所述第一HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息；
    在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息。
  8. 根据权利要求3所述的方法，其中，所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信息和/或所述协调信息之前，还包括：
    所述第一终端确定所述MAC PDU或者MAC层数据包是否包括除所述MAC CE之外的其它信息；
    所述第一终端基于所述第二HARQ-ACK信息确定是否重传所述请求信 息和/或所述协调信息，包括：
    在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为否定信息的情况下，所述第一终端重传所述请求信息和/或所述协调信息；
    在所述MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息，所述第二HARQ-ACK信息为确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息；
    在所述MAC PDU或者MAC层数据包仅包括所述MAC CE，所述第二HARQ-ACK信息为否定信息或确认信息的情况下，所述第一终端停止传输所述请求信息和/或所述协调信息。
  9. 根据权利要求1的方法，其中，所述第一终端一次或多次传输所述请求信息和/或所述协调信息之前，还包括：
    所述第一终端发送第一信息，和/或接收所述第二终端发送的第二信息；
    其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
  10. 根据权利要求1或2的方法，其中，所述第一终端多次传输所述请求信息和/或所述协调信息，包括：
    所述第一终端通过预设方式重传所述请求信息和/或所述协调信息；
    其中，所述预设方式包括以下至少一项：
    盲重传；
    基于接收到的第一HARQ-ACK信息或者第二HARQ-ACK信息的重传。
  11. 根据权利要求3所述的方法，其中，所述协调信息的第一信息域指示资源选择信息，其中，资源选择信息包括倾向或者不倾向第二终端选择的目标传输资源；
    所述第一信息域指示的时频资源，或者第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源。
  12. 一种信息传输方法，包括：
    第二终端接收一次或多次传输的请求信息和/或协调信息；
    其中，所述请求信息用于请求所述第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
  13. 根据权利要求12所述的方法，其中，所述第二终端接收一次或多次传输的所述请求信息和/或所述协调信息之后，还包括：
    所述第二终端发送第一HARQ-ACK信息或者第二HARQ-ACK信息；
    其中，所述第一HARQ-ACK信息是所述第二终端根据解调第二阶段SCI是否成功生成的，所述第二阶段SCI携带所述请求信息和/或所述协调信息；
    所述第二HARQ-ACK信息是所述第二终端根据解调MAC PDU或者MAC层数据包是否成功生成的，所述MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的MAC CE。
  14. 根据权利要求13所述的方法，其中，所述第二终端发送所述第一HARQ-ACK信息，包括：
    在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息的情况下，所述第二终端根据解调所述第二阶段SCI是否成功，生成对应的第一HARQ-ACK信息，并发送所述第一HARQ-ACK信息。
  15. 根据权利要求14所述的方法，其中，所述第二终端根据解调所述第二阶段SCI是否成功，生成对应的第一HARQ-ACK信息，包括：
    在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且成功解调所述第二阶段SCI的情况下，生成确定信息；
    在接收到的MAC PDU或者MAC层数据包仅包括所述MAC CE，且未成功解调所述第二阶段SCI的情况下，生成否定信息。
  16. 根据权利要求13所述的方法，其中，所述第二终端发送所述第二HARQ-ACK信息，包括：
    在所述第二终端通过解调所述第二阶段SCI获取所述请求信息和/或所述协调信息，且接收到的MAC PDU或者MAC层数据包包括除所述MAC CE之外的其它信息的情况下，所述第二终端根据解调所述MAC PDU或者MAC层数据包是否成功，生成对应的第二HARQ-ACK信息，并发送所述第二HARQ-ACK信息。
  17. 根据权利要求12所述的方法，其中，所述第二终端接收一次或多次 传输的请求信息和/或协调信息之前，还包括：
    所述第二终端发送第二信息，和/或接收第一终端发送的第一信息；
    其中，所述第一信息用于指示所述第一终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息；所述第二信息用于指示所述第二终端是否通过解调第二阶段SCI获取所述请求信息和/或所述协调信息。
  18. 一种信息传输指示方法，包括：
    第三终端发送第一阶段SCI和/或第二阶段SCI；
    其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
    所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
    所述第二阶段SCI用于传输请求信息；
    所述第二阶段SCI用于传输协调信息；
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
  19. 根据权利要求18所述的方法，其中，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
  20. 根据权利要求18所述的方法，其中，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
    所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
  21. 一种信息传输指示方法，包括：
    第四终端接收第一阶段SCI和/或第二阶段SCI；
    其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求所述第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
    所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
    所述第二阶段SCI用于传输请求信息；
    所述第二阶段SCI用于传输协调信息
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
  22. 根据权利要求21所述的方法，其中，所述第一阶段SCI通过保留位和/或第二阶段SCI格式指示域指示所述目标信息，所述第二阶段SCI与所述第一阶段SCI关联。
  23. 根据权利要求21所述的方法，其中，所述第一阶段SCI和所述第二阶段SCI联合指示所述目标信息的情况下，所述第一阶段SCI与所述第二阶段SCI关联；
    所述第一阶段SCI指示所述第二阶段SCI用于传输请求信息和协调信息中的任意一个，所述第二阶段SCI通过至少一个信息域指示所述目标信息。
  24. 一种信息传输装置，包括：
    第一发送模块，用于一次或多次传输请求信息和/或协调信息；
    其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向第二终端提供直通链路资源选择信息。
  25. 根据权利要求24所述的装置，其中，所述第一发送模块还用于：
    基于预设重传次数，一次或多次传输所述请求信息和/或所述协调信息。
  26. 根据权利要求24或25所述的装置，其中，还包括：
    确定模块，用于基于接收到的第一混合自动重传请求反馈HARQ-ACK信息或者第二HARQ-ACK信息，确定是否重传所述请求信息和/或协调信息；
    其中，第一HARQ-ACK信息是第二终端根据解调第二阶段直通链路控制信息SCI是否成功生成的，第二阶段SCI携带所述请求信息和/或所述协调信息；
    第二HARQ-ACK信息是所述第二终端根据解调媒体接入控制协议数据单元MAC PDU或者MAC层数据包是否成功生成的，MAC PDU或者MAC层数据包包括携带所述请求信息和/或所述协调信息的媒体接入控制控制单元MAC CE。
  27. 根据权利要求26所述的装置，其中，所述确定模块还用于：
    在接收到的所述第一HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第一HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
    在接收到的所述第一HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
  28. 根据权利要求26所述的装置，其中，所述确定模块还用于：
    在接收到的所述第二HARQ-ACK信息为否定信息的情况下，重传所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息和/或所述协调信息；或者，
    在接收到的所述第二HARQ-ACK信息为确认信息的情况下，停止传输所述请求信息和/或所述协调信息。
  29. 根据权利要求26所述的装置，其中，所述确定模块还用于：
    在接收到的所述第二HARQ-ACK信息为否定信息或确认信息的情况下，停止传输所述请求信息和/或所述协调信息；或者，
    在没有接收到所述第二HARQ-ACK信息的情况下，重传所述请求信息 和/或所述协调信息。
  30. 根据权利要求26所述的装置，其中，所述协调信息的第一信息域指示资源选择信息，其中，资源选择信息包括倾向或者不倾向第二终端选择的目标传输资源；
    所述第一信息域指示的时频资源，或者第一信息域指示的时频资源所在的时域资源为所述倾向或者不倾向第二终端选择的目标传输资源。
  31. 一种信息传输装置，包括：
    第一接收模块，用于接收一次或多次传输的请求信息和/或协调信息；
    其中，所述请求信息用于请求第二终端反馈协调信息，所述协调信息用于向所述第二终端提供直通链路资源选择信息。
  32. 一种信息传输指示装置，包括：
    第二发送模块，用于发送第一阶段SCI和/或第二阶段SCI；
    其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
    所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
    所述第二阶段SCI用于传输请求信息；
    所述第二阶段SCI用于传输协调信息
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
  33. 一种信息传输指示装置，包括：
    第二接收模块，用于接收第一阶段SCI和/或第二阶段SCI；
    其中，所述第二阶段SCI用于传输请求信息和/或协调信息，所述请求信 息用于请求第四终端反馈协调信息，所述协调信息用于向所述第四终端提供直通链路资源选择信息；
    所述第一阶段SCI和/或所述第二阶段SCI指示以下至少一项目标信息：
    所述第二阶段SCI用于传输请求信息；
    所述第二阶段SCI用于传输协调信息
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供倾向第四终端选择的资源；
    所述第二阶段SCI用于传输请求信息，且所述请求信息用于请求第四终端提供不倾向第三终端选择的资源；
    所述第二阶段SCI用于传输协调信息，且所述协调信息用于向第四终端提供不倾向第四终端选择的资源。
  34. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，其中，所述程序或指令被所述处理器执行时实现如权利要求1至11任一项所述的信息传输方法，或者实现如权利要求12至17任一项所述的信息传输方法，或者实现如权利要求18至20任一项所述的信息传输指示方法，或者，实现如权利要求21至23任一项所述的信息传输指示方法的步骤。
  35. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至11任一项所述的信息传输方法，或者实现如权利要求12至17任一项所述的信息传输方法，或者实现如权利要求18至20任一项所述的信息传输指示方法，或者，实现如权利要求21至23任一项所述的信息传输指示方法的步骤。
PCT/CN2022/141059 2021-12-23 2022-12-22 信息传输方法、信息传输指示方法、装置及终端 WO2023116829A1 (zh)

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