WO2023208185A1 - Procédé de transmission de signal, terminal et support d'enregistrement lisible - Google Patents

Procédé de transmission de signal, terminal et support d'enregistrement lisible Download PDF

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Publication number
WO2023208185A1
WO2023208185A1 PCT/CN2023/091538 CN2023091538W WO2023208185A1 WO 2023208185 A1 WO2023208185 A1 WO 2023208185A1 CN 2023091538 W CN2023091538 W CN 2023091538W WO 2023208185 A1 WO2023208185 A1 WO 2023208185A1
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Prior art keywords
reference signal
information
sequence
sci
types
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PCT/CN2023/091538
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English (en)
Chinese (zh)
Inventor
王园园
司晔
彭淑燕
邬华明
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维沃移动通信有限公司
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Publication of WO2023208185A1 publication Critical patent/WO2023208185A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a signal transmission method, terminal and readable storage medium.
  • LTE Long Term Evolution
  • UE User Equipment
  • LTE SL is based on broadcast communication. Although it can be used to support basic security communications of vehicle to everything (V2X), it is not suitable for other more advanced V2X services.
  • V2X vehicle to everything
  • the 5G New Radio (NR) system will support more advanced SL transmission designs, such as unicast, multicast or multicast, etc., thus supporting more comprehensive service types.
  • Embodiments of the present application provide a signal transmission method, a terminal and a readable storage medium, which can solve the problem of how to transmit an SL reference signal for positioning between two terminals in SL transmission.
  • a signal transmission method which method includes:
  • the first terminal receives the first transmission content from the second terminal.
  • the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI.
  • the first terminal sends a second SL reference signal to the second terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the second SL reference signal Both are reference signals used for positioning.
  • a signal transmission device including:
  • a receiving module configured to receive first transmission content from the second terminal, where the first transmission content includes at least one of a first secondary link SL reference signal and a first secondary link control information SCI, where the first SCI is associated with the first SL reference signal;
  • a sending module configured to send a second SL reference signal to the second terminal, the second SL reference signal being associated with the first transmission content, the first SL reference signal and the second SL reference signal Both are reference signals used for positioning.
  • a signal transmission method which method includes:
  • the second terminal sends first transmission content to the first terminal.
  • the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI.
  • the first SCI is related to the first secondary link control information SCI.
  • the second terminal receives a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the second SL reference signal
  • the signals are all reference signals used for positioning.
  • a signal transmission device including:
  • a sending module configured to send first transmission content to the first terminal, where the first transmission content includes at least one of a first secondary link SL reference signal and a first secondary link control information SCI, where the first SCI associated with the first SL reference signal;
  • a receiving module configured to receive a second SL reference signal from the first terminal, the second SL reference signal being associated with the first transmission content, the first SL reference signal and the second SL reference signal
  • the signals are all reference signals used for positioning.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in the first aspect or the third aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive first transmission content from the second terminal, where the first transmission content includes a first secondary link SL reference signal and At least one item of first secondary link control information SCI, the first SCI is associated with the first SL reference signal; sending a second SL reference signal to the second terminal, the second SL reference signal is associated with the first SL reference signal.
  • the first transmission content is associated, and the first SL reference signal and the second SL reference signal are both reference signals used for positioning;
  • the communication interface is used to send first transmission content to the first terminal, where the first transmission content includes at least one of a first secondary link SL reference signal and a first secondary link control information SCI, where the first SCI and The first SL reference signal is associated; receiving a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the The second SL reference signals are all reference signals used for positioning.
  • a communication device including a first terminal and a second terminal.
  • the first terminal is used to perform the steps of the method described in the first aspect
  • the second terminal is used to perform the steps of the method described in the third aspect. steps of the method described.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first or third aspect are implemented. .
  • a chip in a ninth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the first aspect or the third aspect. steps of the method.
  • 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 first aspect or the third aspect. The steps of the method described in this aspect.
  • the first terminal receives the first transmission content from the second terminal, and the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI.
  • the first SCI is associated with the first SL reference signal;
  • the first terminal sends a second SL reference signal to the second terminal, and
  • the second SL reference signal is associated with the first transmission content ,
  • the first SL reference signal and the second SL reference signal are both reference signals used for positioning.
  • the second terminal since the second SL reference signal is associated with the first SL reference signal, the second terminal can learn that the second SL reference signal sent by the first terminal is a response of the first terminal based on the first SL reference signal, which facilitates the second terminal.
  • the terminal performs subsequent positioning based on the second SL reference signal.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • FIG. 2 is one of the flow charts of the signal transmission method provided by the embodiment of the present application.
  • Figure 3a is a schematic diagram of a format of the SL reference signal provided by the embodiment of the present application.
  • Figure 3b is a schematic diagram of the time difference between two terminals sending SL reference signals according to the embodiment of the present application
  • Figure 4 is the second flow chart of the signal transmission method provided by the embodiment of the present application.
  • Figure 5 is one of the structural diagrams of the signal transmission device provided by the embodiment of the present application.
  • Figure 6 is the second structural diagram of the signal transmission device provided by the embodiment of the present application.
  • Figure 7 is a structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 8 is a structural diagram of a terminal provided by an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th generation Generation, 6G) communication system.
  • 6G 6th generation Generation
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet device
  • augmented reality augmented reality, AR
  • VR virtual reality
  • robots wearable devices
  • Vehicle user equipment VUE
  • pedestrian terminal pedestrian terminal
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side equipment 12 may include access network equipment or core network equipment, where the access network equipment may also be called wireless access network equipment, radio access network (Radio Access Network, RAN), radio access network function or wireless access network unit.
  • Access network equipment can include base stations, Wireless Local Area Network (WLAN) access points or WiFi nodes, etc.
  • WLAN Wireless Local Area Network
  • the base station can be called Node B, Evolved Node B (eNB), access point, base transceiver station ( Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, sending and receiving point ( Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the NR system is used The base station is introduced as an example, and the specific type of base station is not limited. The signal transmission method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.
  • this embodiment of the present application provides a signal transmission method, which includes the following steps:
  • Step 201 The first terminal receives first transmission content from the second terminal, where the first transmission content includes at least one of a first SL reference signal and a first sidelink control information (Sidelink Control Information, SCI), The first SCI is associated with the first SL reference signal.
  • SCI Sidelink Control Information
  • Figure 3a shows a schematic diagram of a first SL PRS provided by an embodiment of the present application.
  • the SL reference signal can be understood as a reference signal used for positioning, and may include: SL positioning reference signal (Positioning Reference Signal (PRS), and signals used for positioning extended by the SL reference signal, such as: SideLink Synchronization Signal Block (S-SSB), SL channel state information Reference Signal (Channel state information Reference Signal, CSI-RS), SL phase-tracking reference signal (PTRS), SL demodulation reference signal (Demodulation Reference Signal, DMRS), etc.
  • PRS SL positioning reference signal
  • S-SSB SideLink Synchronization Signal Block
  • CSI-RS SL channel state information Reference Signal
  • PTRS phase-tracking reference signal
  • DMRS Demodulation Reference Signal
  • Step 202 The first terminal sends a second SL reference signal to the second terminal, where the second SL reference signal is associated with the first transmission content.
  • the second SL reference signal may be associated with the first SL reference signal and/or associated with the first SCI. Since the first SCI is associated with the first SL reference signal, the second SL reference signal may be associated with only the first SL reference signal. An SCI association can also be associated with the first SL reference signal. That is to say, the second SL reference signal sent by the first terminal is associated with the first SL reference signal received by the first terminal. After receiving the second SL reference signal, the second terminal can learn the second SL reference signal sent by the first terminal.
  • the second SL reference signal is a response of the first terminal based on the first SL reference signal can further determine whether it is necessary to receive the second SL reference signal, and in the case where there are multiple terminals in the second terminal, such as in a multicast scenario. , these multiple terminals can also learn whether the signal is sent to themselves based on the second SL reference signal, thereby reducing the load of other multicast members in demodulating the second SL reference signal during multicast.
  • the first terminal sends a second SL reference signal to the second terminal, and the second SL reference signal is associated with the information indicated by the first SCI.
  • the first terminal receives the first transmission content from the second terminal, and the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI, so The first SCI is associated with the first SL reference signal; the first terminal sends a second SL reference signal to the second terminal, and the second SL reference signal is associated with the first transmission content.
  • the second terminal since the second SL reference signal is associated with the first SL reference signal, the second terminal can learn that the second SL reference signal sent by the first terminal is a response of the first terminal based on the first SL reference signal, which facilitates the second terminal.
  • the terminal performs subsequent processing based on the second SL reference signal, for example, performs positioning based on the second SL reference signal.
  • the sequence of the second SL reference signal is determined based on at least one of the following information:
  • the Cyclic Redundancy Check (CRC) check code of the first SCI for example, the check code can be 10 bits (bit), 12 bit or 16 bit;
  • a first auxiliary identifier such as 0 or 1.
  • the first auxiliary identifier can be combined with at least one of the above (1)-(7) to determine the sequence of the second SL reference signal;
  • the above items (1)-(8) can be used to determine the sequence ID of the second SL reference signal. Further, the second SL reference signal is determined according to the sequence ID of the second SL reference signal. the sequence of.
  • the sequence of the first SL reference signal is determined based on at least one of the following information:
  • the CRC check code of the first SCI for example, the check code can be 10 bits (bit), 12 bit or 16 bit;
  • a second auxiliary identifier such as 0 or 1.
  • the second auxiliary identifier can be combined with at least one of the above (1)-(7) to determine the sequence of the first SL reference signal.
  • the above items (1)-(8) can be used to determine the sequence ID of the first SL reference signal. Further, the first SL reference signal is determined according to the sequence ID of the first SL reference signal. the sequence of.
  • the sequence of the first SL reference signal is generated based on N1 types of information
  • the sequence of the second SL reference signal is generated based on N2 types of information
  • N1 and N2 are both positive integers
  • the N1 kinds of information and the N2 kinds of information satisfy at least one of the following:
  • N1 and N2 are the same.
  • N1 and N2 are both 2;
  • N1 and N2 are different.
  • N1 is 1 and N2 is 2;
  • N1 kinds of information and N2 kinds of information There are different information in N1 kinds of information and N2 kinds of information; the different information in N1 kinds of information and N2 kinds of information includes at least one of the following:
  • N1 types of information and N2 types of information The same information exists in N1 types of information and N2 types of information.
  • the first SL reference signal is determined based on the CRC check code of the first SCI
  • the second SL reference signal It is determined based on the CRC check code of the first SCI and the sequence ID indicated by the first SCI that the CRC check code of the first SCI is the same information present in the N1 types of information and the N2 types of information.
  • the same information among the N1 types of information and N2 types of information includes at least one of the following:
  • the sequence ID indicated by the first SCI exists in the N1 types of information and the N2 types of information;
  • the same destination ID exists in the N1 types of information and the N2 types of information;
  • the same terminal group ID exists in the N1 types of information and the N2 types of information;
  • the same group member ID exists in the N1 types of information and the N2 types of information;
  • the same auxiliary identifier exists in the N1 types of information and the N2 types of information.
  • N1 kinds of information and N2 kinds of information have the same information, but different information values.
  • the N1 kinds of information include the CRC check code and predetermined value of the first SCI.
  • the configured or pre-indicated sequence ID, the pre-configured or pre-indicated sequence ID of the first SL reference signal is all 0s or all 1s.
  • the N2 kinds of information include the CRC check code of the first SCI and a preconfigured or preindicated sequence ID, and the preconfigured or preindicated sequence ID is the first SCI indication;
  • the N1 information includes the CRC check code of the first SCI and the preconfigured or preindicated sequence ID.
  • the N2 kinds of information include the CRC check code of the second SCI and the preconfigured or preindicated sequence ID, and the preconfigured or preindicated sequence ID bit indicates the first SCI.
  • the N1 information may be the N1 information in the sequence used to generate the first SL reference signal.
  • the information in N1 may be the CRC check code, preconfiguration or preinstruction of the first SCI.
  • the N2 types of information may be the N2 types of the above sequences used to generate the second SL reference signal.
  • the N2 types of information may be the CRC check code of the first SCI, the sequence ID indicated by the first SCI, preconfiguration or preset The indicated sequence ID of the first SL reference signal, the source ID associated with the first SL reference signal, the destination ID associated with the first SL reference signal, the terminal group ID associated with the first SL reference signal, the first SL reference At least one of the group member ID and the first auxiliary identification associated with the signal.
  • the values of N1 and N2 are different, and the N1 kinds of information present in the N2 kinds of information are the same as the N1 kinds of information used to generate the sequence of the first SL reference signal;
  • the M types of information present in the N2 types of information include at least one of the following:
  • N2 is the sum of N1 and M.
  • N2 is 2, N1 and M are both 1, the N2 information includes the group member ID corresponding to the second terminal and the preconfigured or pre-indicated sequence ID of the first SL reference signal, and the N1 information includes the second terminal
  • the corresponding group member ID, M kinds of information include the sequence ID of the first SL reference signal that is preconfigured or preindicated.
  • the sequence ID of the second SL positioning reference signal includes at least one of the following:
  • the cumulative sum of the first value and the second value that is, the first value + the second value, the first value is a value determined based on at least one of the N1 kinds of information, and the second value is A value determined based on at least one of the M types of information;
  • the accumulated sum is a value obtained modulo the K1 value, that is, (first value + second value) mod (i.e. modulo) K1, K1 is a positive integer, and the value can be 10bit, 12bit or 16bit;
  • sequence ID of the second SL positioning reference signal may also include A/K1 and B mod K1, where A is the first value and B is the second value.
  • the sequence seed of the second SL positioning reference signal is generated based on a first value and a second value, where the first value is a value determined based on at least one of the N1 types of information, The second value is a value determined based on at least one of the M types of information.
  • the second SL reference signal is associated with the first transmission content, including at least one of the following:
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal, specifically including:
  • the sequence ID of the second SL positioning reference signal includes the sum of a fourth value and a fifth value, the fourth value is a value determined according to the sequence ID of the first SL positioning reference signal, and the fifth value is equal to The first transmission content is associated.
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal, specifically including:
  • the sequence seed of the second SL positioning reference signal includes a sum of a sixth value and a seventh value, the sixth value is a value determined according to the sequence seed of the first SL positioning reference signal, and the seventh value is equal to The first transmission content is associated.
  • the fifth value or the seventh value is determined based on at least one of the following:
  • the second SL positioning reference signal and the first SL positioning reference signal have the same first information, and the first information is determined based on the first SL positioning reference signal or the first SCI.
  • the second SL positioning reference signal and the first SL positioning reference signal have different second information, and the second information is determined based on the first SL positioning reference signal or the first SCI.
  • the second SL reference signal is associated with the first SL reference signal. It can be understood that the sequence of the second SL reference signal is based on the measurement information of the first SL reference signal. It is determined that the measurement information of the first SL reference signal includes at least one of the following:
  • the measurement information of the first SL reference signal includes the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal, and the difference between the sending time of the second SL reference signal and the receiving time of the second SL reference signal.
  • the difference in reception time of the first SL reference signal includes one of the following:
  • the first subframe is the difference between the first terminal's SL subframe and the first SL reference signal reception time.
  • the first time difference is modulo the value of K2.
  • the first time difference is the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • K2 is a positive integer.
  • K2 is at least one of 1 ms, the time length of the SL subframe, the symbol length used to transmit the SL positioning reference signal, and the slot length used to transmit the SL positioning reference signal.
  • the unit of the time difference may be a subframe or a time slot, and the time difference may be an absolute time difference.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal and includes one of the following:
  • the sequence of the second SL reference signal initial sequence * exp (-1j*w*T Tx-Rx timing difference ), T Tx-Rx timing difference is the sending time of the second SL reference signal and the reception time of the first SL reference signal
  • the time difference is shown as T2 in Figure 3b, w is fc*2* ⁇ , and fc is the subcarrier.
  • T Rx-Tx timing difference is the sending time of the first SL reference signal and the receiving time of the second SL reference signal. difference, as shown by T1 in Figure 3b.
  • the initial sequence is a sequence generated according to the at least one information used to generate the sequence of the second SL reference signal, and the at least one information includes the CRC check code of the first SCI and the sequence ID indicated by the first SCI. , the preconfigured or pre-indicated sequence ID of the first SL reference signal, the source ID associated with the first SL reference signal, the destination ID associated with the first SL reference signal, and the terminal group ID associated with the first SL reference signal. , at least one of the group member ID and the first auxiliary identifier associated with the first SL reference signal.
  • the cyclic offsets of different resource elements (Resource Elements, REs) of the second SL reference signal are determined according to one of the following:
  • the second SL reference signal is associated with the first SL reference signal. It can be understood that the time domain position (such as slot or symbol) of the second SL reference signal is at least as follows: One sure thing:
  • the time domain position indicated by the first SCI (such as time domain offset, absolute time domain position);
  • the group member ID associated with the first SL reference signal is the group member ID associated with the first SL reference signal.
  • the sequence of the second SL reference signal includes a first sequence and a second sequence, and the first sequence and the second sequence satisfy at least one of the following:
  • the first sequence is determined based on the first transmission content
  • the second sequence is determined based on the first transmission content
  • the first sequence is the same as the sequence of the first SL reference signal
  • the second sequence is the same as the sequence of the first SL reference signal
  • the first sequence is determined based on third information
  • the second sequence is determined based on the third information
  • the third information includes at least one of the following:
  • the second SCI is associated with the second SL reference signal.
  • the first sequence is related to the first transmission content, and the second sequence is unrelated to the first transmission content.
  • the first sequence is determined based on the first SL reference signal, and the second sequence has nothing to do with the first SL reference signal.
  • the first sequence is determined according to the first SCI
  • the second sequence is determined according to the second SCI
  • the generation rules of the first sequence and the second sequence are different.
  • the first sequence is related to measurement information, and the second sequence is not related to measurement information.
  • the first SCI may be a dedicated SCI, including at least one of the following:
  • the first SL reference signal enable flag is used to indicate whether the current slot has SL PRS
  • the first SL reference signal resource index (or SL PRS configuration ID) is used to indicate the resource sequence number of the SL PRS selected by the terminal in the resource pool.
  • the mapping relationship between the SL PRS resource index and the SL PRS resource can be obtained by at least one method such as protocol agreement, network configuration (or preconfiguration), and terminal selection;
  • the resource index is sorted according to the order agreed by the protocol.
  • the resource corresponding to the resource index is determined by at least one of a specific frequency domain position, time domain position, and sequence (code domain).
  • the order of the index is arranged according to the frequency domain, time domain.
  • the sequence of domains and/or code domains (such as frequency domain first and then time domain, or code domain first and then frequency domain and then code domain, etc.).
  • the first indication information is used to indicate the time-frequency position of the first SL reference signal or the second SL reference signal in the time slot where the first SCI is located.
  • the frequency domain position indication information includes: at least one of frequency domain starting position and bandwidth;
  • the frequency domain starting position is a relative frequency domain position (relative offset) relative to the first SCI frequency domain position.
  • One implementation indicate the starting position of the frequency domain by an offset relative to the lowest frequency domain position of the first SCI (such as the lowest PRB or the lowest subchannel).
  • the unit of the offset can be a PRB or a subchannel (subchannel);
  • the starting position of the frequency domain is the same as the starting position of the SCI frequency domain, that is, the offset is 0.
  • the bandwidth granularity is an integer multiple of the subchannel
  • the frequency domain starting position and bandwidth are represented by joint coding
  • Second indication information the second indication information is used to indicate the cyclic offset of the second SL reference signal.
  • the protocol agreement or network configuration (preconfiguration) optional cycle offsets are X, and the terminal can select one from them and indicate it through the first SCI.
  • the third indication information is used to indicate the sequence ID of the first SL reference signal
  • One implementation mode There are multiple protocol agreements or network configurations (pre-configuration), and the terminal can select one from them and indicate it through the first SCI.
  • the sequence ID is related to the ID of the second terminal, and may be equal to the ID of the second terminal or generated by the ID of the second terminal in accordance with protocol agreement or network configuration (preconfiguration).
  • the ID of the second terminal can be one of the following: source ID, destination ID, member ID, the second terminal ID predefined by the protocol or preconfigured by the manufacturer, the application layer or IP layer ID, or based on the high-level ID (source ID, destination ID, application layer ID, IP layer ID) generated physical layer ID, etc.
  • the fourth indication information is used to indicate repeated or reserved SL reference signal resources.
  • the fourth indication information is used to indicate, in addition to the current slot where the first SCI is located, SL PRS resources that are repeated or reserved in other slots (or after the current slot, or within a period after the current slot).
  • the destination ID associated with the first SL reference signal is generated from the destination ID of layer 2;
  • the first SCI is a shared SCI, and the first SCI is used to indicate at least one of the following:
  • the second level SCI format includes the format indicating the first SL reference signal configuration and data transmission; in addition to the current second level SCI Format-A/B/C indication, the second level SCI format
  • the first-level SCI format adds a second-level SCI format used to indicate SL PRS configuration and data transmission, such as SCI format 2-D.
  • the reserved time slot indication is used to indicate whether data transmission and the first SL reference signal are shared.
  • the reserved slot indication indicated in the time domain resource allocation is reinterpreted as: pure data slot, or a slot where data is shared with SL PRS, or SL PRS Only slot.
  • the first SL reference signal enable flag is used to indicate whether the current slot and/or reserved slot has SL PRS.
  • One implementation method Use a bitmap to indicate whether the current slot and/or reserved slot has SL PRS, and the length of the bitmap is the number of slots in the current slot and/or reserved slot;
  • the reserved bit indicates whether the nth slot has or does not have SL PRS. (Based on this indication, in one SCI, it can only indicate whether there is a SL PRS in a slot).
  • the current slot and reserved slot have PRS, this indication can be ignored or defaults to 0;
  • the symbols occupied by the first SL reference signal are the symbol positions of the SL PRS of the current slot and/or the reserved slot.
  • the protocol agrees or the network configures (pre-configuration) the symbol positions potentially occupied by SL PRS, and the UE selects a specific symbol position among the potentially occupied symbols for SL PRS transmission, and indicates it through SCI;
  • the symbols occupied by SL PRS may or may not contain symbols occupied by AGC and/or GAP;
  • the terminal can know the second-level SCI format (format), determine the PRB occupied by the second-level SCI format, and decode normally. The terminal can also determine which symbols occupied by the data are decoded normally.
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • Frequency domain resource allocation indication can reinterpret the parameters of the existing first-level SCI indication.
  • the reinterpreted parameters are used to indicate at least one of the following:
  • the bandwidth of the Physical Side Link Shared Channel is different from the bandwidth of the first SL reference signal, the frequency domain position of the first SL reference signal and the frequency domain position of the PSSCH.
  • the frequency domain resource allocation indicates the PSSCH frequency domain position (including bandwidth and/or starting position), and the PSSCH bandwidth may be different from the SL PRS bandwidth.
  • the frequency domain resource allocation indication is used to determine the frequency domain location of the SL PRS.
  • the SL PRS occupies an independent slot and is not multiplexed with the PSSCH.
  • the frequency domain resource allocation indication information is used to determine the frequency domain location of the SL PRS and the frequency domain location of the PSSCH.
  • the preset code point is used to determine the enable/disable of SL PRS; if SL PRS is enabled, the current slot and/or reservation The slot has SL PRS; if SL PRS is disabled, the current slot and/or reserved slot will not have SL PRS;
  • SL PRS exists, the frequency domain location of SL PRS is predefined/preconfigured/configured.
  • the bandwidth of SL PRS is the same as the bandwidth of PSSCH, or in other words, SL PRS determines the bandwidth and location based on the FRIV of SCI format 1-A.
  • the first SCI when the first SCI is a shared SCI, the first SCI also includes indication information for indicating the second-level SCI, and the first SCI and the second-level SCI are used for The first SL reference signal resource and data transmission are jointly indicated.
  • the second level SCI format is SCI format 2-D.
  • the second level SCI format may be indicated by the first level shared SCI.
  • the second-level SCI includes at least one of the following:
  • the fifth indication information is used to indicate the frequency domain position of the first SL reference signal in the target time slot, including the frequency domain starting position and/or bandwidth, and the target time slot includes Current time slot and/or reserved time slot;o
  • the SL PRS bandwidth can be larger than the PSSCH bandwidth.
  • the sixth indication information is used to indicate the comb structure (comb structure) of the first SL reference signal in the target time slot;
  • the seventh indication information is used to indicate the comb offset (comb offset) or RE offset of the first SL reference signal in the target time slot;
  • the eighth indication information is used to indicate the cyclic offset of the first SL reference signal in the target time slot
  • the ninth indication information is used to indicate the sequence ID of the first SL reference signal in the target timeslot;
  • Tenth indication information is used to indicate the time-frequency resource pattern (pattern) (or relative RE offset) of the first SL reference signal in the target timeslot;
  • the eleventh indication information is used to indicate the priority of the first SL reference signal in the target timeslot;
  • the enable flag of the first SL reference signal is used to indicate whether there is an SL PRS in the reserved time slot
  • Twelfth indication information is used to indicate reserved SL reference signal resources for time slots used only for SL reference signals.
  • the twelfth indication information includes: slot position, symbol position, bandwidth, frequency domain starting position, comb, comb offset, cyclic offset, sequence ID, At least one of patterns and cycles. ;
  • the method further include:
  • the first terminal sends a second SCI to the second terminal, and the second SCI and the second SL reference signal association.
  • the terminal can learn whether the second SL reference signal to be received is related to itself according to the second SCI, and thereby decide whether to receive the second SL reference signal. If the terminal finds that the second SL reference signal it is about to receive has nothing to do with itself and is not the signal it wants to obtain, it can reject the second SL reference signal to save power consumption.
  • the second SCI includes at least one of the following:
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the identification information of the second terminal is the identification information of the second terminal.
  • this embodiment of the present application provides a signal transmission method, which includes the following steps:
  • Step 401 The second terminal sends first transmission content to the first terminal.
  • the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI.
  • SCI is associated with the first SL reference signal.
  • Step 402 The second terminal receives a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content, and the first SL reference signal and the first transmission content are The two SL reference signals are both reference signals used for positioning.
  • the second SL reference signal may be associated with the first SL reference signal and/or associated with the first SCI. Since the first SCI is associated with the first SL reference signal, the second SL reference signal may be associated with only the first SL reference signal. An SCI association can also be associated with the first SL reference signal. That is to say, the second SL reference signal sent by the first terminal is associated with the first SL reference signal received by the first terminal. After receiving the second SL reference signal, the second terminal can learn the second SL reference signal sent by the first terminal.
  • the second SL reference signal is the response of the first terminal based on the first SL reference signal, and if there are multiple terminals in the second terminal, such as in a multicast scenario, these multiple terminals can also respond according to the second SL reference signal.
  • the signal knows whether the signal is sent to itself.
  • the second terminal sends the first transmission content to the first terminal, and the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI, and the A first SCI is associated with the first SL reference signal; the second terminal receives a second SL reference signal from the first terminal, and the second SL reference signal is associated with the first transmission content.
  • the second terminal since the second SL reference signal is associated with the first SL reference signal, the second terminal can learn that the second SL reference signal sent by the first terminal is a response of the first terminal based on the first SL reference signal, which facilitates the second terminal.
  • the terminal performs subsequent processing based on the second SL reference signal, for example, performs positioning based on the second SL reference signal.
  • the sequence of the second SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is generated based on N1 types of information
  • the sequence of the second SL reference signal is generated based on N2 types of information
  • N1 and N2 are both positive integers
  • the N1 kinds of information and the N2 kinds of information satisfy at least one of the following:
  • N1 and N2 are the same;
  • N1 and N2 are not the same;
  • N1 kinds of information and N2 kinds of information There is different information in N1 kinds of information and N2 kinds of information;
  • N1 types of information The same information exists in N1 types of information and N2 types of information.
  • the same information among the N1 types of information and N2 types of information includes at least one of the following:
  • the sequence ID indicated by the first SCI exists in the N1 types of information and the N2 types of information;
  • the same destination ID exists in the N1 types of information and the N2 types of information;
  • the same terminal group ID exists in the N1 types of information and the N2 types of information;
  • the same group member ID exists in the N1 types of information and the N2 types of information;
  • the same auxiliary identifier exists in the N1 types of information and the N2 types of information.
  • the different information among the N1 types of information and N2 types of information includes at least one of the following:
  • the values of N1 and N2 are different, and there are N1 kinds of information in the N2 kinds of information.
  • the M types of information present in the N2 types of information include at least one of the following:
  • N2 is the sum of N1 and M.
  • the sequence ID of the second SL positioning reference signal includes at least one of the following:
  • the cumulative sum of a first value and a second value where the first value is a value determined based on at least one of the N1 types of information, and the second value is determined based on at least one of the M types of information. value;
  • the accumulated sum is a value obtained modulo the value of K1, where K1 is a positive integer;
  • a third numerical value, the base of the third numerical value is the first numerical value, and the exponent of the third numerical value is the second numerical value.
  • the sequence seed of the second SL positioning reference signal is generated based on a first value and a second value, where the first value is a value determined based on at least one of the N1 types of information, The second value is a value determined based on at least one of the M types of information.
  • the second SL reference signal is associated with the first transmission content, including at least one of the following:
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the second SL positioning reference signal and the first SL positioning reference signal have the same first information, and the first information is determined based on the first SL positioning reference signal or the first SCI;
  • the second SL positioning reference signal and the first SL positioning reference signal have different second information, and the second information is determined based on the first SL positioning reference signal or the first SCI.
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence ID of the second SL positioning reference signal includes the sum of a fourth value and a fifth value, where the fourth value is a value determined according to the sequence ID of the first SL positioning reference signal;
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence seed of the second SL positioning reference signal includes the sum of a sixth value and a seventh value, where the sixth value is a value determined according to the sequence seed of the first SL positioning reference signal;
  • the fifth value and the seventh value are both associated with the first transmission content.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal.
  • the measurement information of the first SL reference signal includes at least one of the following:
  • the measurement information of the first SL reference signal includes the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal includes one of the following:
  • the first subframe is the SL subframe of the first terminal that is closest to the reception time of the first SL reference signal. SL subframe;
  • the first time difference is modulo the value of K2.
  • the first time difference is the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • K2 is a positive integer.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal, including one of the following:
  • the initial sequence being a sequence generated according to the at least one information
  • the initial sequence is cyclically offset using a function associated with measurement information of the first SL reference signal.
  • the cyclic offsets of different resource elements RE of the second SL reference signal are determined according to one of the following:
  • the time domain position of the second SL reference signal is determined according to at least one of the following:
  • the group member ID associated with the first SL reference signal is the group member ID associated with the first SL reference signal.
  • the sequence of the second SL reference signal includes a first sequence and a second sequence, and the first sequence and the second sequence satisfy at least one of the following:
  • the first sequence is determined based on the first transmission content
  • the second sequence is determined based on the first transmission content
  • the first sequence is the same as the sequence of the first SL reference signal
  • the second sequence is the same as the sequence of the first SL reference signal
  • the first sequence is determined based on third information
  • the second sequence is determined based on the third information
  • the third information includes at least one of the following:
  • the second SCI is associated with the second SL reference signal.
  • the first SCI includes at least one of the following:
  • the first indication information is used to indicate the time-frequency position of the first SL reference signal or the second SL reference signal in the time slot where the first SCI is located;
  • the second indication information being used to indicate the cyclic offset of the second SL reference signal
  • the third indication information is used to indicate the sequence ID of the first SL reference signal
  • the fourth indication information is used to indicate repeated or reserved SL reference signal resources
  • the first SCI is used to indicate at least one of the following:
  • a second-level SCI format includes a format indicating the first SL reference signal configuration and data transmission;
  • a reserved time slot indication is used to indicate whether data transmission and the first SL reference signal are shared;
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the frequency domain resource allocation indication is used to indicate at least one of the following:
  • the bandwidth of the PSSCH is different from the bandwidth of the first SL reference signal, the frequency domain position of the first SL reference signal and the frequency domain position of the PSSCH.
  • the first SCI also includes indication information used to indicate the second-level SCI, and the first SCI and the second-level SCI are used to jointly indicate the first SL reference signal resource. and data transfer.
  • the second-level SCI includes at least one of the following:
  • the fifth indication information is used to indicate the frequency domain position of the first SL reference signal in a target time slot, where the target time slot includes a current time slot and/or a reserved time slot;
  • the sixth indication information is used to indicate the comb structure of the first SL reference signal in the target time slot;
  • the seventh indication information is used to indicate the comb offset of the first SL reference signal in the target time slot;
  • the eighth indication information is used to indicate the cyclic offset of the first SL reference signal in the target time slot;
  • the ninth indication information is used to indicate the sequence ID of the first SL reference signal in the target timeslot;
  • Tenth indication information the tenth indication information is used to indicate the time-frequency resource pattern of the first SL reference signal in the target timeslot;
  • the eleventh indication information is used to indicate the priority of the first SL reference signal in the target timeslot;
  • Twelfth indication information the twelfth indication information is used to indicate reserved SL reference signal resources for time slots used only for SL reference signals;
  • the method further includes :
  • the second terminal receives a second SCI sent by the first terminal, and the second SCI is associated with the second SL reference signal.
  • the second SCI includes at least one of the following:
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the identification information of the second terminal is the identification information of the second terminal.
  • the second terminal has the same technical features as the first terminal. For details, please refer to the records on the first terminal side, which will not be described again here.
  • the execution subject may be a signal transmission device.
  • the signal transmission device executing the signal transmission method is taken as an example to illustrate the signal transmission device provided by the embodiment of the present application.
  • the first signal transmission device 500 includes:
  • Receiving module 501 configured to receive first transmission content from the second terminal, where the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI, and the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI. a SCI associated with the first SL reference signal;
  • the first sending module 502 is configured to send a second SL reference signal to the second terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the second SL reference signals are all reference signals used for positioning.
  • the sequence of the second SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is generated based on N1 types of information
  • the sequence of the second SL reference signal is generated based on N2 types of information
  • N1 and N2 are both positive integers
  • the N1 kinds of information and the N2 kinds of information satisfy at least one of the following:
  • N1 and N2 are the same;
  • N1 and N2 are not the same;
  • N1 kinds of information and N2 kinds of information There is different information in N1 kinds of information and N2 kinds of information;
  • N1 types of information The same information exists in N1 types of information and N2 types of information.
  • the same information among the N1 types of information and N2 types of information includes at least one of the following:
  • the sequence ID indicated by the first SCI exists in the N1 types of information and the N2 types of information;
  • the same destination ID exists in the N1 types of information and the N2 types of information;
  • the same terminal group ID exists in the N1 types of information and the N2 types of information;
  • the same group member ID exists in the N1 types of information and the N2 types of information;
  • the same auxiliary identifier exists in the N1 types of information and the N2 types of information.
  • the information that is different among the N1 types of information and the N2 types of information includes at least one of the following:
  • the values of N1 and N2 are different, and the N1 kinds of information present in the N2 kinds of information are the same as the N1 kinds of information used to generate the sequence of the first SL reference signal;
  • the M types of information present in the N2 types of information include at least one of the following:
  • N2 is the sum of N1 and M.
  • sequence ID of the second SL positioning reference signal includes at least one of the following:
  • the cumulative sum of a first value and a second value where the first value is a value determined based on at least one of the N1 types of information, and the second value is determined based on at least one of the M types of information. value;
  • the accumulated sum is a value obtained modulo the value of K1, where K1 is a positive integer;
  • a third numerical value, the base of the third numerical value is the first numerical value, and the exponent of the third numerical value is the second numerical value.
  • the sequence seed of the second SL positioning reference signal is generated based on a first value and a second value
  • the first value is a value determined based on at least one of the N1 types of information
  • the second The numerical value is a numerical value determined based on at least one of the M types of information.
  • the second SL reference signal is associated with the first transmission content, including at least one of the following:
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the second SL positioning reference signal and the first SL positioning reference signal have the same first information, and the first information is determined based on the first SL positioning reference signal or the first SCI;
  • the second SL positioning reference signal and the first SL positioning reference signal have different second information, and the second information is determined based on the first SL positioning reference signal or the first SCI.
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence ID of the second SL positioning reference signal includes the sum of a fourth value and a fifth value, where the fourth value is a value determined according to the sequence ID of the first SL positioning reference signal;
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence seed of the second SL positioning reference signal includes the sum of a sixth value and a seventh value, where the sixth value is a value determined according to the sequence seed of the first SL positioning reference signal;
  • the fifth value and the seventh value are both associated with the first transmission content.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal.
  • the measurement information of the first SL reference signal includes at least one of the following:
  • the measurement information of the first SL reference signal includes a difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal includes one of the following:
  • the first subframe is the SL subframe of the first terminal that is closest to the reception time of the first SL reference signal. SL subframe;
  • the first time difference is modulo the value of K2.
  • the first time difference is the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • K2 is a positive integer.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal, including one of the following:
  • the initial sequence being a sequence generated according to the at least one information
  • the initial sequence is cyclically offset using a function associated with measurement information of the first SL reference signal.
  • the cyclic offsets of different resource elements RE of the second SL reference signal are determined according to one of the following:
  • the time domain position of the second SL reference signal is determined according to at least one of the following:
  • the group member ID associated with the first SL reference signal is the group member ID associated with the first SL reference signal.
  • the sequence of the second SL reference signal includes a first sequence and a second sequence, and the first sequence and the second sequence satisfy at least one of the following:
  • the first sequence is determined based on the first transmission content
  • the second sequence is determined based on the first transmission content
  • the first sequence is the same as the sequence of the first SL reference signal
  • the second sequence is the same as the sequence of the first SL reference signal
  • the first sequence is determined based on third information
  • the second sequence is determined based on the third information
  • the third information includes at least one of the following:
  • the second SCI is associated with the second SL reference signal.
  • the first SCI includes at least one of the following:
  • the first indication information is used to indicate the time-frequency position of the first SL reference signal or the second SL reference signal in the time slot where the first SCI is located;
  • the second indication information being used to indicate the cyclic offset of the second SL reference signal
  • the third indication information is used to indicate the sequence ID of the first SL reference signal
  • the fourth indication information is used to indicate repeated or reserved SL reference signal resources
  • the first SCI is used to indicate at least one of the following:
  • the second level SCI format includes instructions for the first SL reference signal configuration and data transmission. Input format
  • a reserved time slot indication is used to indicate whether data transmission and the first SL reference signal are shared;
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the frequency domain resource allocation indication is used to indicate at least one of the following:
  • the bandwidth of the PSSCH is different from the bandwidth of the first SL reference signal, the frequency domain position of the first SL reference signal and the frequency domain position of the PSSCH.
  • the first SCI further includes indication information used to indicate a second-level SCI, and the first SCI and the second-level SCI are used to jointly indicate the first SL reference signal resource and data transmission.
  • the second-level SCI includes at least one of the following:
  • the fifth indication information is used to indicate the frequency domain position of the first SL reference signal in a target time slot, where the target time slot includes a current time slot and/or a reserved time slot;
  • the sixth indication information is used to indicate the comb structure of the first SL reference signal in the target time slot;
  • the seventh indication information is used to indicate the comb offset of the first SL reference signal in the target time slot;
  • the eighth indication information is used to indicate the cyclic offset of the first SL reference signal in the target time slot;
  • the ninth indication information is used to indicate the sequence ID of the first SL reference signal in the target timeslot;
  • Tenth indication information the tenth indication information is used to indicate the time-frequency resource pattern of the first SL reference signal in the target timeslot;
  • the eleventh indication information is used to indicate the priority of the first SL reference signal in the target timeslot;
  • Twelfth indication information the twelfth indication information is used to indicate reserved SL reference signal resources for time slots used only for SL reference signals;
  • the apparatus 500 further includes a second sending module, configured to send a second SCI to the second terminal, where the second SCI is associated with the second SL reference signal.
  • a second sending module configured to send a second SCI to the second terminal, where the second SCI is associated with the second SL reference signal.
  • the second SCI includes at least one of the following:
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the identification information of the second terminal is the identification information of the second terminal.
  • the first signal transmission device 500 provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, details will not be described here.
  • the second signal transmission device 600 includes:
  • Sending module 601 configured to send first transmission content to the first terminal, where the first transmission content includes at least one of the first secondary link SL reference signal and the first secondary link control information SCI.
  • SCI is associated with the first SL reference signal;
  • the first receiving module 602 is configured to receive a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the third
  • the two SL reference signals are both reference signals used for positioning.
  • the sequence of the second SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is determined based on at least one of the following information:
  • the sequence of the first SL reference signal is generated based on N1 types of information
  • the sequence of the second SL reference signal is generated based on N2 types of information
  • N1 and N2 are both positive integers
  • the N1 kinds of information and the N2 kinds of information satisfy at least one of the following:
  • N1 and N2 are the same;
  • N1 and N2 are not the same;
  • N1 kinds of information and N2 kinds of information There is different information in N1 kinds of information and N2 kinds of information;
  • N1 types of information The same information exists in N1 types of information and N2 types of information.
  • the same information among the N1 types of information and N2 types of information includes at least one of the following:
  • the sequence ID indicated by the first SCI exists in the N1 types of information and the N2 types of information;
  • the same destination ID exists in the N1 types of information and the N2 types of information;
  • the same terminal group ID exists in the N1 types of information and the N2 types of information;
  • the same group member ID exists in the N1 types of information and the N2 types of information;
  • the same auxiliary identifier exists in the N1 types of information and the N2 types of information.
  • the information that is different among the N1 types of information and the N2 types of information includes at least one of the following:
  • the values of N1 and N2 are different, and the N1 kinds of information present in the N2 kinds of information are the same as the N1 kinds of information used to generate the sequence of the first SL reference signal;
  • the M types of information present in the N2 types of information include at least one of the following:
  • N2 is the sum of N1 and M.
  • sequence ID of the second SL positioning reference signal includes at least one of the following:
  • the cumulative sum of a first value and a second value where the first value is a value determined based on at least one of the N1 types of information, and the second value is determined based on at least one of the M types of information. value;
  • the accumulated sum is a value obtained modulo the value of K1, where K1 is a positive integer;
  • a third numerical value, the base of the third numerical value is the first numerical value, and the exponent of the third numerical value is the second numerical value.
  • the sequence seed of the second SL positioning reference signal is generated based on a first value and a second value
  • the first value is a value determined based on at least one of the N1 types of information
  • the second The numerical value is a numerical value determined based on at least one of the M types of information.
  • the second SL reference signal is associated with the first transmission content, including at least one of the following:
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal
  • the second SL positioning reference signal and the first SL positioning reference signal have the same first information, and the first information is determined based on the first SL positioning reference signal or the first SCI;
  • the second SL positioning reference signal and the first SL positioning reference signal have different second information, and the second information is determined according to the first SL positioning reference signal or the first SCI.
  • the sequence ID of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence ID of the second SL positioning reference signal includes the sum of a fourth value and a fifth value, where the fourth value is a value determined according to the sequence ID of the first SL positioning reference signal;
  • the sequence seed of the second SL positioning reference signal is determined based on the first SL positioning reference signal, including:
  • the sequence seed of the second SL positioning reference signal includes the sum of a sixth value and a seventh value, where the sixth value is a value determined according to the sequence seed of the first SL positioning reference signal;
  • the fifth value and the seventh value are both associated with the first transmission content.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal.
  • the measurement information of the first SL reference signal includes at least one of the following:
  • the measurement information of the first SL reference signal includes a difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal includes one of the following:
  • the first subframe is the SL subframe of the first terminal that is closest to the reception time of the first SL reference signal. SL subframe;
  • the first time difference is modulo the value of K2.
  • the first time difference is the difference between the sending time of the second SL reference signal and the receiving time of the first SL reference signal.
  • K2 is a positive integer.
  • the sequence of the second SL reference signal is determined based on the measurement information of the first SL reference signal, including one of the following:
  • the initial sequence being a sequence generated according to the at least one information
  • the initial sequence is cyclically offset using a function associated with measurement information of the first SL reference signal.
  • the cyclic offsets of different resource elements RE of the second SL reference signal are determined according to one of the following:
  • the time domain position of the second SL reference signal is determined according to at least one of the following:
  • the group member ID associated with the first SL reference signal is the group member ID associated with the first SL reference signal.
  • the sequence of the second SL reference signal includes a first sequence and a second sequence, and the first sequence and the second sequence satisfy at least one of the following:
  • the first sequence is determined based on the first transmission content
  • the second sequence is determined based on the first transmission content
  • the first sequence is the same as the sequence of the first SL reference signal
  • the second sequence is the same as the sequence of the first SL reference signal
  • the first sequence is determined based on third information
  • the second sequence is determined based on the third information
  • the third information includes at least one of the following:
  • the second SCI is associated with the second SL reference signal.
  • the first SCI includes at least one of the following:
  • the first indication information is used to indicate the time-frequency position of the first SL reference signal or the second SL reference signal in the time slot where the first SCI is located;
  • the second indication information being used to indicate the cyclic offset of the second SL reference signal
  • the third indication information is used to indicate the sequence ID of the first SL reference signal
  • the fourth indication information is used to indicate repeated or reserved SL reference signal resources
  • the first SCI is used to indicate at least one of the following:
  • a second-level SCI format includes a format indicating the first SL reference signal configuration and data transmission;
  • a reserved time slot indication is used to indicate whether data transmission and the first SL reference signal are shared;
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the frequency domain resource allocation indication is used to indicate at least one of the following:
  • the bandwidth of the PSSCH is different from the bandwidth of the first SL reference signal, the frequency domain position of the first SL reference signal and the frequency domain position of the PSSCH.
  • the first SCI further includes indication information used to indicate a second-level SCI, and the first SCI and the second-level SCI are used to jointly indicate the first SL reference signal resource and data transmission.
  • the second-level SCI includes at least one of the following:
  • the fifth indication information is used to indicate the frequency domain position of the first SL reference signal in a target time slot, where the target time slot includes a current time slot and/or a reserved time slot;
  • the sixth indication information is used to indicate the comb structure of the first SL reference signal in the target time slot;
  • the seventh indication information is used to indicate the comb offset of the first SL reference signal in the target time slot;
  • the eighth indication information is used to indicate the cyclic offset of the first SL reference signal in the target time slot;
  • the ninth indication information is used to indicate the sequence ID of the first SL reference signal in the target timeslot;
  • Tenth indication information the tenth indication information is used to indicate the time-frequency resource pattern of the first SL reference signal in the target timeslot;
  • the eleventh indication information is used to indicate the priority of the first SL reference signal in the target timeslot;
  • Twelfth indication information the twelfth indication information is used to indicate the time slot reserved only for the SL reference signal.
  • the method further includes:
  • the second terminal receives a second SCI sent by the first terminal, and the second SCI is associated with the second SL reference signal.
  • the second SCI includes at least one of the following:
  • a first identifier is used to indicate the first SL positioning reference signal or the second SL positioning reference signal;
  • the identification information of the second terminal is the identification information of the second terminal.
  • the second signal transmission device 600 provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 4 and achieve the same technical effect. To avoid repetition, details will not be described here.
  • the first signal transmission device 500 or the second signal transmission device 600 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • this embodiment of the present application also provides a communication device 700, which includes a processor 701 and a memory 702.
  • the memory 702 stores programs or instructions that can be run on the processor 701, for example.
  • the communication device 700 is a terminal
  • the program or instruction is executed by the processor 701
  • each step of the signal transmission method embodiment shown in Figure 2 or 4 is implemented, and the same technical effect can be achieved. To avoid duplication, here No longer.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the communication interface is used to receive first transmission content from a second terminal, where the first transmission content includes a first secondary link SL reference signal and a first At least one item of secondary link control information SCI, the first SCI is associated with the first SL reference signal; sending a second SL reference signal to the second terminal, the second SL reference signal is associated with the The first transmission content is associated, and the first SL reference signal and the second SL reference signal are both reference signals used for positioning;
  • the communication interface is used to send first transmission content to the first terminal, where the first transmission content includes at least one of a first secondary link SL reference signal and a first secondary link control information SCI, where the first SCI and The first SL reference signal is associated; receiving a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content, the first SL reference signal and the The second SL reference signals are all reference signals used for positioning.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 8 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, etc. At least some parts.
  • the terminal 800 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 810 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 8 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 804 may include a graphics processing unit (Graphics Processing Unit, GPU) 8041 and a microphone 8042.
  • the graphics processor 8041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 807 includes a touch panel 8071 and at least one of other input devices 8072 .
  • Touch panel 8071 also known as touch screen.
  • the touch panel 8071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 8072 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 described again here.
  • the radio frequency unit 801 after receiving downlink data from the network side device, the radio frequency unit 801 can transmit it to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network side device.
  • the radio frequency unit 801 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 809 may be used to store software programs or instructions as well as various data.
  • the memory 809 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 for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 809 may include volatile memory or non-volatile memory, or memory 809 may include both volatile and non-volatile memory.
  • 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), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash 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 link 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 synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 810 may include one or more processing units; optionally, the processor 810 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 810.
  • the radio frequency unit 801 is used to receive the first transmission content from the second terminal, where the first transmission content includes the first secondary link SL reference signal and the first secondary link control information. At least one of SCI, the first SCI is associated with the first SL reference signal; sending a second SL reference signal to the second terminal, the second SL reference signal is related to the first transmission content In this connection, the first SL reference signal and the second SL reference signal are both reference signals used for positioning.
  • the terminal 800 can implement various steps implemented by the first terminal in the embodiment shown in Figure 2. For details, please refer to the records in the embodiment shown in Figure 2, which will not be described again here.
  • the radio frequency unit 801 is configured to send the first transmission content to the first terminal, where the first transmission content includes the first secondary link SL reference signal and the first secondary link control information SCI. At least one of: the first SCI is associated with the first SL reference signal; receiving a second SL reference signal from the first terminal, the second SL reference signal is associated with the first transmission content , the first SL reference signal and the second SL reference signal are both reference signals used for positioning.
  • the terminal 800 can implement various steps implemented by the second terminal in the embodiment shown in Figure 4. For details, please refer to the records in the embodiment shown in Figure 4, which will not be described again here.
  • Embodiments of the present application also provide some readable storage media. Programs or instructions are stored on the readable storage media. When the programs or instructions are executed by the processor, the signal transmission method embodiment shown in Figure 2 or Figure 4 is implemented. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An 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.
  • the processor is used to run programs or instructions to implement what is shown in Figure 2 or Figure 4.
  • Each process of the signal transmission method embodiment shown above can achieve the same technical effect. To avoid repetition, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above signal transmission method embodiment.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • An embodiment of the present application also provides a communication system, including: a first terminal and a second terminal.
  • the first terminal can be used to perform the steps of the signal transmission method of the embodiment shown in Figure 2 above.
  • the second terminal can be used to Execute the steps of the signal transmission method in the embodiment shown in Figure 4 above.
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes several The instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer-readable storage medium.
  • the program can be stored in a computer-readable storage medium.
  • the process may include the processes of the embodiments of each of the above methods.
  • the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented 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 a computer software product that is essentially or contributes to related technologies.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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

Abstract

La présente demande se rapporte au domaine technique des communications. Un procédé de transmission de signal, un terminal et un support d'enregistrement lisible sont divulgués. Le procédé de transmission de signal dans les modes de réalisation de la présente demande comprend les étapes suivantes : un premier terminal reçoit un premier contenu de transmission en provenance d'un second terminal, le premier contenu de transmission comprenant un premier signal de référence de liaison latérale (SL) et/ou de premières informations de commande de liaison latérale (SCI), et les premières SCI étant associées au premier signal de référence SL; et le premier terminal envoie un second signal de référence SL au second terminal, le second signal de référence SL étant associé au premier contenu de transmission, et le premier signal de référence SL et le second signal de référence SL étant tous deux des signaux de référence pour le positionnement.
PCT/CN2023/091538 2022-04-28 2023-04-28 Procédé de transmission de signal, terminal et support d'enregistrement lisible WO2023208185A1 (fr)

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CN202210470950.5 2022-04-28
CN202210470950.5A CN117014840A (zh) 2022-04-28 2022-04-28 信号传输方法、终端及可读存储介质

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111867032A (zh) * 2019-04-28 2020-10-30 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
WO2021232228A1 (fr) * 2020-05-19 2021-11-25 Qualcomm Incorporated Mesure et/ou transmission de signaux de positionnement d'équipement utilisateur
CN113994742A (zh) * 2019-08-12 2022-01-28 Oppo广东移动通信有限公司 用于传输侧行数据的方法、终端设备和网络设备
CN115004720A (zh) * 2020-12-17 2022-09-02 上海诺基亚贝尔股份有限公司 侧链路定位参考信号的重传

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111867032A (zh) * 2019-04-28 2020-10-30 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN113994742A (zh) * 2019-08-12 2022-01-28 Oppo广东移动通信有限公司 用于传输侧行数据的方法、终端设备和网络设备
WO2021232228A1 (fr) * 2020-05-19 2021-11-25 Qualcomm Incorporated Mesure et/ou transmission de signaux de positionnement d'équipement utilisateur
CN115004720A (zh) * 2020-12-17 2022-09-02 上海诺基亚贝尔股份有限公司 侧链路定位参考信号的重传

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