Communication method and communication device

Abstract

The invention provides a communication method and a communication device, and relates to the field of communication. According to the method provided by the invention, the communication device serving as a receiving end can timely know the antenna through which the communication device serving as a sending end sends the reference signal, so that the communication device of the receiving end can timely process, and the efficiency of a measurement task is improved. The method comprises the following steps: receiving first information, wherein the first information is used for indicating a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a first communication device; receiving second information, wherein the second information is used for indicating the identifier of the first reference signal resource; receiving a first reference signal according to the identifier of the first reference signal resource; and determining an antenna identifier corresponding to the first reference signal according to the mapping relation and the identifier of the first reference signal resource, and determining a measurement result by using the antenna identifier corresponding to the first reference signal.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and a communication device. Background Art

[0002] Different types of reference signals (RS) can be used between communication devices to perform channel measurement, channel estimation, data demodulation, positioning measurement, etc. For example, a sidelink positioning reference signal (SL PRS) is a reference signal used for positioning measurement between terminal devices. A terminal device can obtain the measurement quantity (such as arrival time, arrival angle, etc.) of the SL PRS by sending the SL PRS to other terminal devices and / or receiving the SL PRS from other terminal devices, and obtain the positioning result of the terminal device or other terminal devices by using positioning algorithms such as time difference of arrival (TDOA), time of arrival (TOA), round trip time (RTT), angle of arrival (AOA), or angle of departure (AOD).

[0003] A communication device is generally equipped with multiple antennas, through which reference signals are received or sent. The communication device as the transmitting end decides the choice of antenna by itself. When performing a measurement task based on the reference signal, the communication device as the receiving end cannot know which antenna the communication device as the transmitting end uses to send the reference signal, and cannot process the reference signal in time, affecting the overall efficiency of the measurement task. Summary of the invention

[0004] The present application provides a communication method and a communication device, which are conducive to a communication device as a receiving end to promptly know through which antenna a communication device as a transmitting end sends a reference signal, so that the communication device as the receiving end can make timely processing and improve the efficiency of the measurement task.

[0005] In a first aspect, the present application provides a communication method, comprising: receiving first information, wherein the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a first communication device; receiving second information, wherein the second information is used to indicate an identifier of a first reference signal resource; receiving a first reference signal according to the identifier of the first reference signal resource; determining an antenna identifier corresponding to the first reference signal according to the mapping relationship and the identifier of the first reference signal resource, and determining a measurement result using the antenna identifier corresponding to the first reference signal.

[0006] In a possible implementation, the method may be executed by a first communication device or by a chip in the first communication device. The first communication device may be a terminal device or a network device, which is not limited in the present application.

[0007] In an embodiment of the present application, before sending a first reference signal to a second communication device, the first communication device sends a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of the first communication device to the second communication device through first information, and then indicates the identifier of the first reference signal resource selected for sending the first reference signal this time through second information, and uses the first antenna corresponding to the antenna identifier of the first antenna that has a mapping relationship with the identifier of the first reference signal resource to send the first reference signal. In this way, when the second communication device receives the first reference signal, it can determine, based on the identifier of the first reference signal resource and the mapping relationship received through the first information, the antenna corresponding to the antenna identifier of the first communication device through which the first reference signal is sent, which is conducive to timely determining whether there is a reference signal with the same antenna identifier from the first communication device, and timely processing of the received reference signal, which is conducive to improving the overall efficiency of the measurement task corresponding to the reference signal.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: receiving third information, wherein the third information is used to indicate an identifier of a second reference signal resource; receiving a second reference signal according to the identifier of the second reference signal resource; determining an antenna identifier corresponding to the second reference signal according to the mapping relationship and the identifier of the second reference signal resource; and determining the measurement result using the antenna identifier corresponding to the first reference signal, including: when the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, merging the first reference signal and the second reference signal to obtain the measurement result.

[0009] In an embodiment of the present application, when the second communication device determines that the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, the first reference signal and the second reference signal are merged to improve the reference signal strength. Since the first reference signal and the second reference signal are sent through the same antenna of the first communication device, the measurement result error caused by different angles, phases, etc. of different transmitting antennas can be reduced. Merging the reference signals from the same antenna is beneficial to improving the accuracy of the measurement results.

[0010] In combination with the first aspect, in some implementations of the first aspect, the first reference signal and the second reference signal are received using the same receiving antenna.

[0011] In an embodiment of the present application, the second communication device merges the reference signals received through the same antenna from the same antenna identifier of the first communication device, which can greatly reduce the measurement result error caused by the different channel characteristics (such as timing, angle, signal-to-noise ratio, phase characteristics, etc.) between different transmitting and receiving antennas, and improve the accuracy of the measurement results obtained based on the reference signal.

[0012] In combination with the first aspect, in some implementations of the first aspect, receiving the first information includes: receiving the first information from the first communication device or a positioning server.

[0013] It should be understood that the positioning server is a server that provides positioning services. When the position of the first communication device is a fixed position (for example, a public device dedicated to positioning measurement), or the mapping relationship included in the first information is fixed within a certain period, the first communication device first sends the first information to the positioning server, which can save the signaling overhead of the first communication device and save energy for the first communication device. In addition, in the positioning measurement task managed by the positioning server, the positioning server storing the first information can request positioning measurement while sending the first information to the second communication device, or can first send the first information to the second communication device and then request positioning measurement from the second communication device, without waiting for the first communication device to send the first information to the second communication device, which is conducive to improving the overall efficiency of the measurement task in this scenario.

[0014] In combination with the first aspect, in some implementations of the first aspect, the reference signal is a sidelink positioning reference signal SL PRS.

[0015] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving fourth information, the fourth information including a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the reference signal resource is agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0017] In combination with the first aspect, in some implementations of the first aspect, the antenna identifier is an antenna reference point identifier ARP ID.

[0018] In a second aspect, the present application further provides a communication method, including: sending first information, wherein the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a transmitting end; sending second information, wherein the second information is used to indicate an identifier of a first reference signal resource; using a first antenna to send a first reference signal, wherein the first reference signal is mapped to a reference signal resource corresponding to the identifier of the first reference signal resource, and there is a mapping relationship between the antenna identifier of the first antenna and the identifier of the first reference signal resource.

[0019] In a possible implementation, the method may be executed by a second communication device, or by a chip in the second communication device. The second communication device may be a terminal device or a network device, which is not limited in the present application.

[0020] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: sending third information, wherein the third information is used to indicate an identifier of a second reference signal resource; using a second antenna to send a second reference signal, wherein the second reference signal is mapped to a reference signal resource corresponding to the identifier of the second reference signal resource, and there is a mapping relationship between the antenna identifier of the second antenna and the identifier of the second reference signal resource.

[0021] In combination with the second aspect, in some implementations of the second aspect, sending the first information includes: sending the first information to a second communication device or a positioning server.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the reference signal is a sidelink positioning reference signal SL PRS.

[0023] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sending fourth information, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0024] In combination with the second aspect, in certain implementations of the second aspect, the reference signal resource is agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0025] In combination with the second aspect, in some implementations of the second aspect, the antenna identifier is an antenna reference point identifier ARP ID.

[0026] In a third aspect, the present application provides a communication device, including a processing module and a transceiver module. The transceiver module is used to: receive first information, the first information is used to indicate the mapping relationship between the identifier of the reference signal resource and at least one antenna identifier of the first communication device; receive second information, the second information is used to indicate the identifier of the first reference signal resource; and, according to the identifier of the first reference signal resource, receive a first reference signal; the processing module is used to: determine the antenna identifier corresponding to the first reference signal according to the mapping relationship and the identifier of the first reference signal resource, and determine the measurement result using the antenna identifier corresponding to the first reference signal.

[0027] Optionally, the transceiver module is also used to: receive third information, where the third information is used to indicate an identifier of a second reference signal resource; receive a second reference signal according to the identifier of the second reference signal resource; the processing module is also used to: determine the antenna identifier corresponding to the second reference signal according to the mapping relationship and the identifier of the second reference signal resource; and, when the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, merge the first reference signal and the second reference signal to obtain the measurement result.

[0028] Optionally, the first reference signal and the second reference signal are received using the same receiving antenna.

[0029] Optionally, the transceiver module is specifically used to: receive the first information from the first communication device or a positioning server.

[0030] Optionally, the reference signal is a sidelink positioning reference signal SL PRS.

[0031] Optionally, the transceiver module is further used to: receive fourth information, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0032] Optionally, the reference signal resource is agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0033] Optionally, the antenna identifier is an antenna reference point identifier ARP ID.

[0034] In a fourth aspect, the present application provides another communication device, including a processing module and a transceiver module. The transceiver module is used to: send first information, the first information is used to indicate the mapping relationship between the identifier of the reference signal resource and at least one antenna identifier of the transmitting end; send second information, the second information is used to indicate the identifier of the first reference signal resource; and use the first antenna to send a first reference signal, the first reference signal is mapped to the reference signal resource corresponding to the identifier of the first reference signal resource, and there is a mapping relationship between the antenna identifier of the first antenna and the identifier of the first reference signal resource.

[0035] Optionally, the transceiver module is also used to: send third information, wherein the third information is used to indicate an identifier of a second reference signal resource; use the second antenna to send a second reference signal, wherein the second reference signal is mapped to a reference signal resource corresponding to the identifier of the second reference signal resource, and there is a mapping relationship between the antenna identifier of the second antenna and the identifier of the second reference signal resource.

[0036] Optionally, the transceiver module is specifically used to: send the first information to a second communication device or a positioning server.

[0037] Optionally, the reference signal is a sidelink positioning reference signal SL PRS.

[0038] Optionally, the transceiver module is further used to: send fourth information, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0039] Optionally, the reference signal resource is agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0040] Optionally, the antenna identifier is an antenna reference point identifier ARP ID.

[0041] In a fifth aspect, another communication device is provided, including a processor, the processor is coupled to a memory, and can be used to execute instructions in the memory to implement the method in any possible implementation of the first aspect or the second aspect. Optionally, the device also includes a memory. Optionally, the device also includes a communication interface, and the processor is coupled to the communication interface.

[0042] In a sixth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of the first aspect or the second aspect.

[0043] In the specific implementation process, the processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.

[0044] In a seventh aspect, a processing device is provided, comprising a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the method in any possible implementation of the first aspect or the second aspect.

[0045] Optionally, there are one or more processors and one or more memories.

[0046] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0047] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be set on different chips respectively. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0048] It should be understood that the relevant data interaction process, such as sending indication information, can be a process of outputting indication information from a processor, and receiving capability information can be a process of receiving input capability information from a processor. Specifically, the processed output data can be output to a transmitter, and the input data received by the processor can come from a receiver. Among them, the transmitter and the receiver can be collectively referred to as a transceiver.

[0049] The processing device in the seventh aspect mentioned above can be a chip. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. The memory can be integrated in the processor or can be located outside the processor and exist independently.

[0050] In an eighth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute a method in any possible implementation of the first aspect or the second aspect.

[0051] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer-readable storage medium is run on a computer, the computer executes a method in any possible implementation of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0053] Figure 2 A schematic diagram of a time slot structure provided in an embodiment of the present application;

[0054] Figure 3 A schematic flow chart of a communication method provided in an embodiment of the present application;

[0055] Figure 4 A schematic flow chart of another communication method provided in an embodiment of the present application;

[0056] Figure 5 A schematic block diagram of a communication device provided in an embodiment of the present application;

[0057] Figure 6 A schematic block diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0059] In the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially identical functions and effects. For example, the first value and the second value are only used to distinguish between different values, and do not limit their order. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0060] It should be noted that in the embodiments of the present application, words such as "exemplarily" or "for example" are used to give examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0061] In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (s) or plural item (s). For example, at least one (item) of a, b, or c may represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c may be single or multiple.

[0062] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5th generation (5G) system or New Radio (NR), 6th generation (6G) system, etc.

[0063] The technical solution provided in this application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), device to device (D2D) network, machine to machine (M2M) network, Internet of Things (IoT) network or Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X may include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication or vehicle to network (V2N) communication, etc.

[0064] To facilitate understanding of the embodiments of the present application, first Figure 1 A communication system applicable to an embodiment of the present application is introduced.

[0065] Figure 1 FIG. 1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application. Figure 1 As shown, the communication system 100 may include a terminal device 110 and a terminal device 120. The terminal device 110 and the terminal device 120 may communicate with each other via proximity communication technology (PC5), for example, sending signaling and / or data.

[0066] It should be understood that Figure 1 This is only an example and should not constitute any limitation to the present application. The communication system 100 may also include a greater number of terminal devices.

[0067] Optionally, the communication system 100 may further include a network device 130, and the terminal device 110 or the terminal device 120 may communicate with the network device 130 via a universal user network interface (user to network interface universal, Uu) interface.

[0068] Optionally, the above Figure 1The core network device may also be included (not shown in the figure), and the core network device refers to the device in the core network (CN) that provides service support for the terminal device. The core network device may include: access and mobility management function (AMF) entity, location management function (LMF), etc., which are not listed here one by one. Among them, the AMF entity can be responsible for the access management and mobility management of the terminal device, and is the access node responsible for some control plane functions; the LMF entity manages the overall coordination and scheduling of resources required for the location of the user equipment (UE) registered to the 5G CN or accessing the 5G CN, and can calculate or verify the final location and any speed estimate. In some examples of the present application, the LMF receives a location request for the target UE from the serving AMF, performs positioning calculations on the terminal device and / or network equipment, and obtains a location result. It should be noted that the entity in the present application may also be referred to as a network element or a functional entity. For example, the AMF entity may also be referred to as an AMF network element or an AMF functional entity, and the present application does not limit this.

[0069] Optionally, the above Figure 1 The terminal device 110 and / or the terminal device 120 may also include a location management component (LMC) deployed on the terminal device, which is used to support the positioning service on the PC5 interface, and may be exemplarily referred to as UE-LMC. However, it should be understood that the present application does not specifically limit whether the terminal device includes a location management component, and the name of the component having this function.

[0070] In the embodiment of the present application, the network device may be any device with wireless transceiver function. The network equipment includes, but is not limited to, evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or homeNode B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WiFi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc. It can also be a gNB in ​​a 5G, such as NR, system, or a transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc.

[0071] In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU may be responsible for processing non-real-time protocols and services, such as the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and / or the packet data convergence protocol (PDCP) layer. The DU may be responsible for processing physical layer protocols and real-time services. For example, the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer may be implemented. A DU may be connected to only one CU or to multiple CUs, and a CU may be connected to multiple DUs, and the CU and DU may communicate through the F1 interface. The AAU may implement some physical layer processing functions, RF processing, and related functions of active antennas. Since the information of the RRC layer will eventually be delivered to the PHY layer and become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU, or by DU+AAU.

[0072] It is understandable that the network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), which is not limited in this application.

[0073] The network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment. The cell can belong to a macro base station (for example, macro eNB or macro gNB, etc.), or it can belong to a base station corresponding to a small cell. The small cell here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0074] In an embodiment of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0075] The terminal device can be a device that provides voice / data connectivity to users, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals can be: mobile phones, tablet computers (pad), computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (mobile internet devices, MIDs), virtual reality (virtual reality, VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistants) assistant, PDA), handheld devices with wireless communication function, computing devices or other processing devices connected to a wireless modem, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved public land mobile communication networks (public land mobile network, PLMN), etc.

[0076] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0077] In addition, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.

[0078] In addition, terminal devices can also include sensors such as smart printers, train detectors, gas stations, etc. Their main functions include collecting data (some terminal devices), receiving control information and side data from other terminal devices, and sending electromagnetic waves to transmit side data to other terminal devices.

[0079] In an embodiment of the present application, the terminal device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as it can communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device, or a functional module in the terminal device that can call a program and execute the program.

[0080] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0081] For ease of understanding, the terms involved in this application are briefly explained below.

[0082] 1. Time domain resources

[0083] Time domain resources include symbols, slots, mini-slots, partial slots, sub-frames, radio frames (or frames), sensing slots, etc.

[0084] One of the time slots may include at least one symbol, for example, 14 symbols, or 12 symbols. The time slots may have different time slot types, and different time slot types include different numbers of symbols, such as a mini time slot containing less than 7 symbols, 2 symbols, 3 symbols, 4 symbols, etc., and a normal time slot containing 7 symbols or 14 symbols, etc.

[0085] 2. Frequency domain resources

[0086] Frequency domain resources include subchannels, frequency bands, carriers, bandwidth parts (BWP), resource blocks (RB), etc.

[0087] 3. Resource pool

[0088] A resource pool can be understood as a collection of time-frequency resources. The frequency domain resources contained in the resource pool are continuous. The time domain resources contained in the resource pool can be continuous or discontinuous. Exemplarily, different resource pools are distinguished by different resource pool identifiers (e.g., SL-resource pool ID). The terminal device receives on the receiving resource pool and sends on the sending resource pool. If the resource pools have the same resource pool index, it can be considered that the time-frequency resources of the resource pools are completely overlapping.

[0089] The SL resource pool used to send the sidelink positioning reference signal (SLPRS) can be divided into two types: an exclusive resource pool and a shared resource pool. The resources in the exclusive resource pool can be specifically used to transmit the SL PRS. For example, in order to provide the possibility of a larger bandwidth, they are specially designed to ensure the transmission of the SL PRS and cannot be used to transmit the physical sidelink shared channel (PSSCH). The resources in the shared resource pool can be used to transmit the PSSCH or the SL PRS. In one possible example, the terminal device can allocate part of the symbols occupied by the PSSCH to send to the SL PRS.

[0090] It should be understood that the “resources” described in the embodiments of the present application all refer to time-frequency resources.

[0091] 4. Physical sidelink control channel (PSCCH)

[0092] PSCCH is a physical sidelink control channel used to transmit control information on the sidelink (i.e., device-to-device communication) to support device-to-device (D2D) communication, vehicle-to-vehicle (V2V) communication, and vehicle-to-device (V2X) communication, etc.

[0093] It should be understood that PSCCH can be understood as a physical resource, and can also be understood as data, signaling, etc. transmitted through this physical resource. For example, a terminal device sends control information, such as sidelink control information (SCI), through PSCCH, which can also be expressed as the terminal device sending PSCCH; PSCCH mapped on time-frequency resources can also be understood as SCI transmitted on PSCCH. Those skilled in the art can understand its meaning.

[0094] 5. Physical sidelink shared channel (PSSCH)

[0095] PSSCH is a physical sidelink shared channel used to transmit a part of the physical layer control information and data information submitted by the media access control (MAC) layer to the physical layer on the sidelink (i.e., device-to-device communication), and is used to support device-to-device (D2D) communication, vehicle-to-vehicle (V2V) communication, and vehicle-to-device (V2X) communication, etc.

[0096] It should be understood that PSCCH can be understood as a physical resource, and can also be understood as data, signaling, etc. transmitted through this physical resource. The terminal device can send part of the physical layer control information through PSSCH, such as the second stage sidelink control information (SCI), and can also send data information submitted by the MAC layer to the physical layer through PSSCH, such as MAC control element (MAC CE) and upper layer transmission information received by the MAC layer from the radio link control (RLC) layer. Those skilled in the art can understand its meaning.

[0097] 6. Sidelink positioning reference signal (SL PRS)

[0098] SL PRS is a reference signal required for positioning measurement between terminal devices. It is sent and received through the side link. With the development of vehicle networking and vehicle autonomous driving technology, it is a reference signal designed for mutual positioning measurement and obtaining relative positions between vehicles and other terminal devices with positioning requirements.

[0099] It should be understood that when sending SL PRS, it is necessary to send the indication information of the SL PRS. Exemplarily, the information may include one or more of the following: the priority of the SL PRS, the identification information of the resource pool, the time-frequency resource identification information mapped by the SL PRS, the time-frequency resource identification information reserved for the user to send SL PRS, the device identification information of the transmitting end, the device identification information of the receiving end, the request information for instructing the receiving end to return the SL PRS, etc. The indication information may be SCI, which may be sent in one level (exclusive resource pool) and only sent through PSCCH; or may be sent in two levels (shared resource pool), wherein the first level is sent through PSCCH and the second level is sent through PSSCH.

[0100] For example, Figure 2 FIG. 4 shows the time slot structure for sending SL PRS through the shared resource pool. Figure 2As shown, a physical sidelink control channel (PSCCH), PSSCH, SL PRS, etc. can be sent in a time slot of a shared resource pool. The terminal device selects symbols that can map the SL PRS according to the resource configuration. For example, it can be the last M symbols after excluding the symbols mapped with the demodulation reference signal (DMRS) (not shown in the figure) (taking a time slot containing 14 symbols as an example, the frequency domain corresponding to the last two symbols of this time slot is mapped with DMRS (DMRS and PSSCH frequency division multiplexing), then excluding these two symbols, select M consecutive symbols from the third to last symbol to map the SL PRS). The resource ID occupied by the SL PRS, as well as the number of symbols M, the number of comb teeth, and the comb tooth offset corresponding to the resource ID are indicated through SCI.

[0101] Different types of reference signals (RS) can be used between communication devices to perform channel measurement, channel estimation, data demodulation, positioning measurement, etc. For example, a sidelink positioning reference signal (SL PRS) is a reference signal used for positioning measurement between terminal devices. A terminal device can send an SL PRS to other terminal devices (for example, it can be transmitted through Figure 2 The time slot structure shown is sent through a shared resource pool), and / or, SL PRS is received from other terminal devices, measurement quantities of SLPRS (such as arrival time, arrival angle, etc.) are obtained, and positioning results for the terminal device or other terminal devices are obtained by using positioning algorithms such as time difference of arrival (TDOA), time of arrival (TOA), round trip time (RTT), angle of arrival (AOA), or angle of departure (AOD).

[0102] Wireless communication devices are generally equipped with multiple antennas, and receive or send reference signals through the antennas. At present, the communication device as the transmitting end selects the antenna randomly, and the communication device as the receiving end cannot predict its selection, that is, when it is necessary to send a reference signal, the communication device as the transmitting end may select an antenna from multiple antennas to send a reference signal. However, in a measurement task, sending a reference signal once is often not enough to obtain a measurement result, and the communication device needs to send reference signals multiple times to provide more available signals. However, sending multiple times may cause the communication device at the transmitting end to send reference signals through different antennas. Since the channel characteristics (such as timing, angle, signal-to-noise ratio, phase characteristics, etc.) of different transmitting and receiving antenna pairs between the communication devices at the transmitting and receiving ends are different, the measurement results (such as first path delay, first path angle, first path phase) obtained by the communication device as the receiving end based on the reference signals from different transmitting and receiving antenna pairs will be different.

[0103] In order to avoid the measurement error caused by such differences, in a measurement task, the reference signals corresponding to the same antenna pair between the communication devices at both ends of the transmission and reception can be combined to achieve the purpose of signal enhancement and measurement accuracy improvement. However, at present, when the communication device at the receiving end performs the measurement task of the reference signal, it is impossible to know which antenna the communication device at the transmitting end uses to send the reference signal, and it is also impossible to perform the combination processing in time, which affects the overall efficiency of the measurement task.

[0104] In view of this, the present application provides a communication method, in which the communication device at the transmitting end sends the mapping relationship between the reference signal and the transmitting antenna to the communication device at the receiving end before sending the reference signal, so that the communication device at the receiving end can process the reference signal from the same transmitting antenna in a timely manner, thereby improving the overall efficiency of the measurement task.

[0105] In order to make the purpose and technical solution of this application clearer and more intuitive, the network optimization method and communication device of the embodiment of this application will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0106] Figure 3 A schematic flow chart of a communication method 300 provided in an embodiment of the present application is shown. The method 300 can be applied to the above Figure 1 The communication system 100 shown in the present application is applied to Figure 1 The communication system 100 shown has the following three possible scenarios:

[0107] In the first possible scenario, the first communication device in the embodiment of the present application may be the terminal device 110 or the terminal device 120 in the above-mentioned communication system 100, and the second communication device may be the network device 130 in the above-mentioned communication system 100. The first communication device and the second communication device execute the method provided in the embodiment of the present application in the uplink communication scenario.

[0108] In a second possible scenario, the first communication device may be the network device 130 in the above-mentioned communication system 100, and the second communication device may be the terminal device 110 or the terminal device 120 in the above-mentioned communication system 100. The first communication device and the second communication device execute the method provided in the embodiment of the present application in the downlink communication scenario.

[0109] In a third possible scenario, the first communication device may be the terminal device 110 in the above-mentioned communication system 100, and the second communication device may be the terminal device 120 in the above-mentioned communication system 100. The first communication device and the second communication device execute the method provided in the embodiment of the present application in the side communication scenario.

[0110] The embodiments of the present application do not limit the forms of the first communication device and the second communication device. Figure 3 As shown, the method 300 includes the following steps:

[0111] S301: A first communication device sends first information to a second communication device, where the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of the first communication device. Correspondingly, the second communication device receives the first information.

[0112] S302: The first communication device sends second information to the second communication device, where the second information is used to indicate an identifier of a first reference signal resource. Correspondingly, the second communication device receives the second information.

[0113] S303: The first communication device sends a first reference signal to the second communication device using the first antenna, the first reference signal is mapped to a reference signal resource corresponding to an identifier of the first reference signal resource, and there is a mapping relationship between the antenna identifier of the first antenna and the identifier of the first reference signal resource. Correspondingly, the second communication device receives the first reference signal according to the identifier of the first reference signal resource.

[0114] S304. The second communication device determines the antenna identifier corresponding to the first reference signal according to the mapping relationship included in the first information and the identifier of the first reference signal resource included in the second information, and determines a measurement result using the antenna identifier corresponding to the first reference signal.

[0115] In an embodiment of the present application, before sending a first reference signal to a second communication device, the first communication device sends a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of the first communication device to the second communication device through first information, and then indicates the identifier of the first reference signal resource selected for sending the first reference signal this time through second information, and uses the first antenna corresponding to the antenna identifier of the first antenna that has a mapping relationship with the identifier of the first reference signal resource to send the first reference signal. In this way, when the second communication device receives the first reference signal, it can determine, based on the identifier of the first reference signal resource and the mapping relationship in the first information, the antenna corresponding to the antenna identifier of the first communication device through which the first reference signal is sent, which is conducive to timely determining whether there is a reference signal with the same antenna identifier from the first communication device, and timely processing of the received reference signal, which is conducive to improving the overall efficiency of the measurement task corresponding to the reference signal.

[0116] It should be understood that the identifier of the reference signal resource is an identifier corresponding to the reference signal resource that the first communication device is configured to use to send a reference signal, and the first communication device may be configured with one or more reference signal resources.

[0117] In a possible implementation, the one or more reference signal resources are agreed upon by the protocol, configured at the factory, or configured by a network device or other communication device through signaling. Optionally, the network device may be a base station, a vehicle to X (V2X) wireless communication technology server, or a network device configured at the factory for the first communication device, which is not limited in this application.

[0118] It should also be understood that the above-mentioned reference signal can be a demodulation reference signal (de-modulation reference signal, DMRS), a channel status indication reference signal (channel status indication reference signal, CSI-RS), a sounding reference signal (sounding reference signal, SRS), a phase tracking signal (phase track reference signal, PT-RS), a cell-specific reference signal (cell-specific reference signal, CRS), a positioning reference signal (positioning reference signal, PRS), etc. The above-mentioned reference signal can be applicable to uplink, downlink or sideline scenarios, and the present application does not limit this. Exemplarily, taking the above-mentioned reference signal as a sidelink positioning reference signal (SL PRS) as an example, the resources configured by the first communication device may include resource pool information, and one or more SL PRS resource IDs on the resource pool, the number of symbols corresponding to the SL PRS, the number of comb teeth, and the comb tooth offset, etc., and in the positioning-specific resource pool, the starting symbol of the SL PRS may also be included.

[0119] It is worth noting that the at least one antenna identifier of the above-mentioned first communication device refers to the identifier of the antenna used to send signals on the first communication device. The antenna can be an antenna with both transmitting and receiving functions, or an antenna with only transmitting function. This application does not limit this.

[0120] Optionally, the antenna identification involved in the embodiments of the present application may have multiple forms, such as antenna position identification (antenna position identity, AP ID), antenna reference point identification (antenna reference point identity, ARP ID), etc., and the present application does not make specific limitations on this.

[0121] It should be understood that the antenna position identifier is used to mark the antenna position and is not necessarily associated with a specific antenna. Multiple antennas at the same position can correspond to the same antenna position identifier. In an embodiment of the present application, multiple reference signal resources of the first communication device establish a mapping relationship with the same antenna position identifier (it can also be understood that multiple reference signal resources are marked with the same antenna position identifier). When the first communication device uses these multiple reference signal resources to send reference signals, the antenna corresponding to the same antenna position identifier is used.

[0122] It should also be understood that the antenna reference point identifier is used to mark the antenna reference point, and is not necessarily associated with a specific antenna. When multiple physical antennas in different positions are used for simultaneous transmission, a single antenna reference point identifier can be used. This is usually used in scenarios where array antennas are used for beamforming. The selected single antenna reference point can be the geometric center or phase center of multiple arrays, or the geometric center or phase center of one of the antennas. This application does not limit this. In an embodiment of the present application, multiple reference signal resources of the first communication device establish a mapping relationship with the same antenna reference point identifier (it can be understood that multiple reference signal resources are marked with the same antenna reference point identifier). When the first communication device uses these multiple reference signal resources to send reference signals, the antenna corresponding to the marked same antenna reference point identifier or the antenna array corresponding to the same antenna reference point identifier is used.

[0123] Optionally, the above-mentioned first information may indicate the mapping relationship between the identifier of the reference signal resource and at least one antenna identifier of the first communication device in the form of a mapping relationship list, and the list may include a mapping relationship pair between the identifier of each signal resource and the antenna identifier, but the present application does not specifically limit the presentation form of the mapping relationship. Exemplarily, as shown in Table 1 below, the identifiers of the reference signal resources of the first communication device are 0, 1, and 2, and the antenna identifiers used by the first communication device for transmitting antennas are 0 and 1. The mapping relationship can be presented in the following list, and each row in the list represents a mapping relationship pair between the identifier of a signal resource and the antenna identifier. For example, the mapping relationship presented in Table 1 below can be interpreted as: when the first communication device selects a resource with an identifier of 0 for the reference signal resource to send a reference signal, the reference signal is sent through an antenna with an antenna identifier of 0; when the first communication device selects a resource with an identifier of 1 for the reference signal resource to send a reference signal, the reference signal is sent through an antenna with an antenna identifier of 1; when the first communication device selects a resource with an identifier of 2 for the reference signal resource to send a reference signal, the reference signal is sent through an antenna with an antenna identifier of 0.

[0124] Table 1

[0125] Reference signal resource identification Antenna identification 0 0 1 1 2 0

[0126] Optionally, the above mapping relationship may be fixed, or may be re-determined by the first communication device before each measurement task starts or before the reference signal is sent, and this application does not limit this.

[0127] Optionally, the above-mentioned mapping relationship may also be a mapping relationship between a resource index of a reference signal resource, an identifier of a reference signal resource, and an antenna identifier of the first communication device, and the resource index may be an index established by the first communication device for the identifier of a reference signal resource, and is used to identify the reference signal resource configured by the first communication device. The present application does not limit the specific form of the mapping relationship, and its essence is the correspondence between the identifier of the reference signal resource and the antenna identifier, which may be one-to-one (one antenna identifier corresponds to only one reference signal resource identifier) ​​or many-to-one (multiple reference signal resource identifiers correspond to one antenna identifier), and the present application does not limit this.

[0128] It should be understood that the reference signal resources configured by the first communication device for sending reference signals are not available at all times and may be occupied by other communication devices at the current moment. Therefore, in the above method 300, before the first communication device executes the above S303, the first communication device needs to first select a reference signal resource to determine the identifier of the reference signal resource that can currently be used by the first communication device, and then map the reference signal to the reference signal resource corresponding to the identifier of the reference signal resource, and transmit the reference signal using the antenna corresponding to the antenna identifier that has a mapping relationship with the identifier of the reference signal resource.

[0129] Optionally, the first communication device can determine whether a certain reference signal resource is currently available by interacting with the base station, or can determine whether a certain reference signal resource is currently available by listening to the identifiers of reference signal resources broadcast by other communication devices and occupied by other communication devices. The specific steps can be referred to the relevant existing technologies and will not be repeated here.

[0130] In one possible implementation, the first communication device may send the second information and the first reference signal on the resources corresponding to the same time slot, and the symbol occupied by the second information is before the first reference signal. In this way, after receiving the second information and the first reference signal, the second communication device first learns through the second information that the first reference signal is mapped on the reference signal resource corresponding to the identifier of the first reference signal resource, and then receives the first reference signal from the reference signal resource position corresponding to the identifier of the first reference signal resource.

[0131] As an optional embodiment, the above method 300 also includes the following steps: Step 1: The first communication device sends third information, and the third information is used to indicate the identifier of the second reference signal resource. Correspondingly, the second communication device receives the third information; Step 2: The first communication device uses the second antenna to send a second reference signal, and the second reference signal is mapped to the reference signal resource corresponding to the identifier of the second reference signal resource, and there is a mapping relationship between the antenna identifier of the second antenna and the identifier of the second reference signal resource. Correspondingly, the second communication device receives the second reference signal according to the identifier of the second reference signal resource; Step 3: The second communication device determines the antenna identifier corresponding to the second reference signal according to the mapping relationship and the identifier of the second reference signal resource. Then, a possible implementation method for the second communication device in the above S304 to determine the measurement result using the antenna identifier corresponding to the first reference signal is: when the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, the first reference signal and the second reference signal are merged to obtain the measurement result.

[0132] Optionally, the merging of the first reference signal and the second reference signal can be understood as obtaining a signal with more parameters after merging the first reference signal and the second reference signal, or can be understood as merging the first measurement corresponding to the first reference signal and the second side measurement corresponding to the second reference signal to obtain a merged measurement (the measurement may refer to an intermediate quantity in the process of obtaining the final result based on the reference signal, for example, in a positioning measurement task, the measurement may be an arrival angle, arrival time, arrival time difference, etc. obtained based on the reference signal). The above measurement result may refer to the obtained merged measurement, or may be the final result calculated based on the merged measurement (for example, in a positioning measurement task, the final result may refer to a position result such as the absolute position or relative position of the communication device under test), and this application does not limit this.

[0133] In a possible implementation, the combination of the first measurement amount corresponding to the first reference signal and the second side measurement corresponding to the second reference signal may be the sum and average of the first measurement amount and the second measurement amount, or the first measurement amount and the second measurement amount may be weighted according to a channel signal-to-noise ratio parameter when the first reference signal and the second reference signal are received, and the weighted average of the first measurement amount and the second measurement amount is used as the combined measurement amount, which is not limited in the present application.

[0134] It should be understood that in a measurement task, the first communication device can send multiple reference signals to the second communication device to provide more available signals. The above-mentioned first reference signal and second reference signal can be understood as two reference signals respectively sent by the first communication device in a measurement task. The way in which the first communication device sends the second reference signal is similar to the way in which it sends the first reference signal, which will not be repeated here.

[0135] In an embodiment of the present application, when the second communication device determines that the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, the first reference signal and the second reference signal are merged. Since the first reference signal and the second reference signal are sent through the same antenna of the first communication device, merging the first reference signal and the second reference signal can reduce the measurement result error caused by different angles, phases, etc. of different transmitting antennas. Merging reference signals from the same antenna is beneficial to improving the accuracy of the measurement results, and can make the final measurement results more accurate.

[0136] As an optional embodiment, the first reference signal and the second reference signal are received by the second communication device using the same receiving antenna.

[0137] In an embodiment of the present application, the second communication device merges the reference signals received through the same antenna from the same antenna identifier of the first communication device, which can greatly reduce the measurement result error caused by the different channel characteristics (such as timing, angle, signal-to-noise ratio, phase characteristics, etc.) between different transceiver antenna pairs, and improve the accuracy of the measurement results obtained based on the reference signal.

[0138] As an optional embodiment, the above-mentioned reference signal is a sidelink positioning reference signal SL PRS.

[0139] Below, taking the first communication device as a transmitting user equipment (transport user equipment, Tx UE), the second communication device as a receiving user equipment (receive user equipment, Rx UE), and the positioning measurement between the first communication device and the second communication device through SL PRS as an example, the embodiments of the present application are further described in detail.

[0140] Figure 4 A schematic flow chart of a communication method 400 provided in an embodiment of the present application, which method 400 can be applied to the above Figure 1 In the communication system 100 shown in the present embodiment, the Tx UE may be the terminal device 110 in the communication system 100 , and the Rx UE may be the terminal device 120 in the communication system 100 , but the present application does not limit this.

[0141] like Figure 4 As shown, the method 400 includes the following steps:

[0142] S401: A network device sends a SL PRS resource configuration to a Tx UE, where the SL PRS resource configuration includes an identifier of a SL PRS resource. Correspondingly, the Tx UE receives the resource configuration information.

[0143] S402: The Tx UE sends auxiliary information to the Rx UE, where the auxiliary information includes a mapping relationship between an identifier of the ARP of the Tx UE and an identifier of the SL PRS resource. Correspondingly, the Rx UE receives the auxiliary information.

[0144] S403. The Tx UE selects a currently available first SL PRS resource from the resources indicated by the SL PRS resource configuration.

[0145] S404: The Tx UE sends an identifier of the first SL PRS resource to the Rx UE. Correspondingly, the Rx UE receives the identifier of the first SL PRS resource.

[0146] S405, the Tx UE determines the identifier of the first ARP corresponding to the identifier of the first SL PRS resource based on the mapping relationship, and sends the first SL PRS mapped on the first SL PRS resource through the antenna corresponding to the identifier of the first ARP. Correspondingly, the Rx UE receives the first SL PRS according to the identifier of the first SL PRS resource.

[0147] S406. The Rx UE determines, according to the mapping relationship, that the first SL PRS is sent through the antenna corresponding to the identifier of the first ARP.

[0148] S407. The Tx UE selects a currently available second SL PRS resource from the resources indicated by the SL PRS resource configuration.

[0149] S408: The Tx UE sends the identifier of the second SL PRS resource to the Rx UE. Correspondingly, the Rx UE receives the identifier of the second SL PRS resource.

[0150] S409, the Tx UE determines the identifier of the first ARP corresponding to the identifier of the second SL PRS resource based on the mapping relationship, and sends the second SL PRS mapped on the first SL PRS resource through the antenna corresponding to the identifier of the first ARP. Correspondingly, the Rx UE receives the second SL PRS according to the identifier of the second SL PRS resource.

[0151] S410. The Rx UE determines, according to the mapping relationship, that the second SL PRS and the first SL PRS are both sent through the antenna corresponding to the identifier of the first ARP, and combines the second SL PRS with the first SL PRS to obtain a measurement result.

[0152] In one possible implementation, the Rx UE combines the second SL PRS and the first SL PRS to obtain a measurement quantity, or combines the measurement quantity corresponding to the second SL PRS and the measurement quantity corresponding to the first SL PRS to obtain a combined measurement quantity (for example, arrival time, arrival angle, etc.), and sends the combined measurement quantity to the network device, which sends it to the LMF via the AMF. The LMF performs positioning calculations to obtain a positioning result. The positioning result may be position information such as the absolute position or relative position of the TxUE and the Rx UE. At this time, the measurement result in S410 may refer to the measurement quantity.

[0153] In another possible implementation, the Rx UE combines the measurement value corresponding to the second SL PRS and the measurement value corresponding to the first SL PRS, and obtains a positioning result, or the Rx UE combines the positioning result based on the second SL PRS and the positioning result based on the first SL PRS to obtain a final positioning result. At this time, the measurement result in S410 may refer to the positioning result, and this application does not limit the specific meaning of the measurement result obtained by the Rx UE.

[0154] It should be understood that the above S401 is not a necessary step to implement the present application, and the SL PRS resource configuration may also be agreed upon by a protocol, configured at the factory, or configured to the Tx UE by other terminal devices through signaling, and the present application does not limit this.

[0155] Another possible implementation of "the Tx UE sends auxiliary information to the Rx UE" in the above S403 is: the Tx UE sends the auxiliary information to a location server, and then the location server sends the auxiliary information to the Rx UE. The auxiliary information has the same meaning as the "first information" in the above method 300.

[0156] It should be understood that after the Tx UE sends the auxiliary information to the positioning server, the positioning server can store the information and send the auxiliary information to the Rx UE when it is necessary to start a positioning measurement task related to the Tx UE. Optionally, the positioning server can store the auxiliary information of one or more UEs, which is not limited in this application.

[0157] Optionally, the positioning server is a server that provides positioning services for terminal devices, which may be the LMF of the core network, or a user equipment (SL positioning server UE) for providing side-travel positioning services, which is not limited in this application. When the position of the Tx UE is a fixed position (for example, a public device dedicated to positioning measurement), or the mapping relationship included in its auxiliary information is fixed within a certain period, the Tx UE first sends the auxiliary information to the positioning server, which can save the signaling overhead of the Tx UE and save energy for the Tx UE. In addition, in the positioning measurement task managed by the positioning server, the positioning server storing the auxiliary information can request positioning measurement while sending the auxiliary information to the Rx UE, or can first send the auxiliary information to the Rx UE and then request positioning measurement from the Rx UE, without waiting for the Tx UE to provide the Rx UE with auxiliary information, which is conducive to improving the overall efficiency of the measurement task in this scenario.

[0158] Optionally, a sidelink positioning protocol (SLPP) may be used to transmit auxiliary information between the Tx UE and the Rx UE, between the Tx UE and the positioning server, and between the positioning server and the Rx UE, but this application does not limit this.

[0159] It should be understood that the above S404 and S405 can be sent by the Tx UE through one message, or by the Tx UE through two messages respectively. However, the Rx UE needs to decode and obtain the identifier of the first SL PRS resource before it can receive the first SL PRS according to the identifier of the first SL PRS resource. The execution logic of S408 and S409 is the same as that of S404 and S405, and will not be repeated.

[0160] Optionally, the Tx UE can indicate the corresponding SL PRS resource each time the SL PRS is sent by mapping the SCI on the PSCCH / PSSCH. One way to send S404 and S405 through a message is: indicate the first SL PRS resource through the SCI, the first SL PRS is mapped on the first SL PRS resource indicated by the SCI, and the symbol occupied by the PSCCH mapping the SCI is before the symbol occupied by the first SL PRS. So that after receiving the PSCCH / PSSCH, the Rx UE can obtain the indication information of the SL PRS resource by decoding the PSCCH / PSSCH, so that the Rx UE can further receive the SL PRS according to the first SL PRS resource indicated by the indication information. Optionally, the SCI may include an identifier of the SL PRS resource, or a resource index corresponding to the identifier of the SL PRS resource, which is not limited in this application.

[0161] Optionally, when the SL PRS is sent through the shared resource pool, in one transmission, PSSCH and / or DMRS may also be mapped to other symbols besides the symbols occupied by the SL PRS, which is not limited in the present application.

[0162] In an embodiment of the present application, before sending the SL PRS, the Tx UE has sent auxiliary information including a mapping relationship between the ARP identifier of the Tx UE and the identifier of the SLPRS resource to the Rx UE, so that the Rx UE can promptly obtain the ARP identifier of the Tx UE corresponding to the SL PRS through the identifier of the SL PRS resource each time it receives the SLPRS. In a positioning measurement task that requires sending multiple SL PRSs, the SL PRSs from the same antenna identifier can be merged and processed in a timely manner, which is beneficial to improving the efficiency and accuracy of the positioning measurement task and bringing users a faster and more accurate positioning service experience.

[0163] It should be understood that the steps of the above embodiments may be coupled to each other, and this application does not limit this. Moreover, the sequence numbers of the above processes do not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0164] Combined with the above Figures 1 to 4 , describes in detail the communication method of the embodiment of the present application, and will now be combined with Figure 5 and Figure 6 , describe in detail the communication device of an embodiment of the present application.

[0165] Figure 5 A communication device 500 provided in an embodiment of the present application is shown, and the communication device 500 includes: a transceiver module 501 and a processing module 502.

[0166] In a possible implementation, the communication device 500 is used to implement the steps and processes corresponding to the above-mentioned first communication device.

[0167] Among them, the transceiver module 501 is used to: receive first information, the first information is used to indicate the mapping relationship between the identifier of the reference signal resource and at least one antenna identifier of the first communication device; receive second information, the second information is used to indicate the identifier of the first reference signal resource; and, according to the identifier of the first reference signal resource, receive the first reference signal; the processing module 502 is used to: determine the antenna identifier corresponding to the first reference signal according to the mapping relationship and the identifier of the first reference signal resource, and determine the measurement result using the antenna identifier corresponding to the first reference signal.

[0168] Optionally, the transceiver module 501 is also used to: receive third information, where the third information is used to indicate an identifier of a second reference signal resource; receive a second reference signal according to the identifier of the second reference signal resource; the processing module is also used to: determine the antenna identifier corresponding to the second reference signal according to a mapping relationship and the identifier of the second reference signal resource; and, when the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, merge the first reference signal and the second reference signal to obtain a measurement result.

[0169] Optionally, the first reference signal and the second reference signal are received using the same receiving antenna.

[0170] Optionally, the transceiver module is specifically used to: receive first information from a first communication device or a positioning server.

[0171] Optionally, the reference signal is a sidelink positioning reference signal SL PRS.

[0172] Optionally, the transceiver module 501 is further used to: receive fourth information, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0173] Optionally, the reference signal resource is agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0174] Optionally, the antenna identifier is an antenna reference point identifier ARP ID.

[0175] In another possible implementation, the communication device 500 is used to implement the steps and processes corresponding to the second communication device described above.

[0176] Among them, the transceiver module 501 is used to: send first information, where the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a transmitting end; send second information, where the second information is used to indicate an identifier of a first reference signal resource; and, use a first antenna to send a first reference signal, where the first reference signal is mapped to a reference signal resource corresponding to the identifier of the first reference signal resource, and there is a mapping relationship between the antenna identifier of the first antenna and the identifier of the first reference signal resource.

[0177] Optionally, the transceiver module 501 is also used to: send third information, where the third information is used to indicate an identifier of a second reference signal resource; use the second antenna to send a second reference signal, where the second reference signal is mapped to a reference signal resource corresponding to the identifier of the second reference signal resource, and there is a mapping relationship between the antenna identifier of the second antenna and the identifier of the second reference signal resource.

[0178] Optionally, the transceiver module 501 is specifically used to: send the first information to the second communication device or the positioning server;

[0179] Optionally, the reference signal is a sidelink positioning reference signal SL PRS.

[0180] Optionally, the transceiver module 501 is further used to: send fourth information, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

[0181] Optionally, the multiple reference signal resources are agreed upon by a protocol, configured at the factory, or configured by a network device or other communication apparatus through signaling.

[0182] Optionally, the antenna identifier is an antenna reference point identifier ARP ID.

[0183] It should be understood that the device 500 here is embodied in the form of a functional module. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the device 500 may be specifically the first communication device or the second communication device in the above-mentioned embodiment, or the functions described in the above-mentioned embodiment may be integrated in the device 500, and the device 500 may be used to execute the various processes and / or steps corresponding to the first communication device or the second communication device in the above-mentioned method embodiment, and to avoid repetition, it will not be repeated here.

[0184] The above device 500 has the function of implementing the corresponding steps performed by the first communication device or the second communication device in the above method; the above functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0185] In the embodiments of the present application, Figure 5 The device 500 may also be a chip or a chip system, such as a system on chip (SoC).

[0186] Figure 6 A schematic block diagram of a communication device 600 provided in an embodiment of the present application is shown. The device 600 includes a processor 601, a transceiver 602, and a memory 603. The processor 601, the transceiver 602, and the memory 603 communicate with each other through an internal connection path, the memory 603 is used to store instructions, and the processor 601 is used to execute the instructions stored in the memory 603 to control the transceiver 602 to send signals and / or receive signals.

[0187] It should be understood that the device 600 can be specifically the first communication device or the second communication device in the above embodiment, and can be used to execute the various steps and / or processes corresponding to the first communication device or the second communication device in the above method embodiment. Optionally, the memory 603 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A part of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 601 may be used to execute instructions stored in the memory, and when the processor 601 executes the instructions stored in the memory, the processor 601 is used to execute the various steps and / or processes of the above method embodiment. The transceiver 602 may include a transmitter and a receiver, the transmitter may be used to implement the various steps and / or processes corresponding to the above transceiver for performing the sending action, and the receiver may be used to implement the various steps and / or processes corresponding to the above transceiver for performing the receiving action.

[0188] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0189] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0190] The present application also provides a computer-readable storage medium, which is used to store a computer program, and the computer program is used to implement the method shown in the above method embodiment.

[0191] The present application also provides a computer program product, which includes a computer program (also referred to as code or instruction). When the computer program runs on a computer, the computer can execute the method shown in the above method embodiment.

[0192] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0193] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0194] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0195] 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 distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0196] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0197] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0198] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: receiving first information, where the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a first communication device; receiving second information, where the second information is used to indicate an identifier of a first reference signal resource; receiving a first reference signal according to an identifier of the first reference signal resource; According to the mapping relationship and the identifier of the first reference signal resource, the antenna identifier corresponding to the first reference signal is determined, and the measurement result is determined using the antenna identifier corresponding to the first reference signal.

2. The method according to claim 1, characterized in that The method further comprises: receiving third information, where the third information is used to indicate an identifier of a second reference signal resource; receiving a second reference signal according to an identifier of the second reference signal resource; Determine, according to the mapping relationship and the identifier of the second reference signal resource, an antenna identifier corresponding to the second reference signal; The determining the measurement result by using the antenna identifier corresponding to the first reference signal includes: When the antenna identifier corresponding to the first reference signal and the antenna identifier corresponding to the second reference signal are the same, the first reference signal and the second reference signal are combined to obtain the measurement result.

3. The method according to claim 2, characterized in that The first reference signal and the second reference signal are received using the same receiving antenna.

4. The method according to any one of claims 1 to 3, characterized in that The receiving of the first information comprises: The first information is received from the first communication device or a positioning server.

5. The method according to any one of claims 1 to 4, characterized in that The reference signal is a sidelink positioning reference signal SL PRS.

6. The method according to claim 5, characterized in that The method further comprises: Fourth information is received, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

7. The method according to any one of claims 1 to 6, characterized in that The reference signal resources are agreed upon by the protocol, configured at the factory, or configured by network equipment or other communication devices through signaling.

8. The method according to any one of claims 1 to 7, characterized in that The antenna identifier is an antenna reference point identifier ARP ID.

9. A communication method, characterized in that: include: Sending first information, where the first information is used to indicate a mapping relationship between an identifier of a reference signal resource and at least one antenna identifier of a transmitting end; sending second information, where the second information is used to indicate an identifier of the first reference signal resource; A first reference signal is sent using a first antenna, the first reference signal is mapped to a reference signal resource corresponding to an identifier of the first reference signal resource, and there is a mapping relationship between the antenna identifier of the first antenna and the identifier of the first reference signal resource.

10. The method according to claim 9, characterized in that The method further comprises: Sending third information, where the third information is used to indicate an identifier of a second reference signal resource; A second reference signal is sent using the second antenna, the second reference signal is mapped to a reference signal resource corresponding to the identifier of the second reference signal resource, and there is a mapping relationship between the antenna identifier of the second antenna and the identifier of the second reference signal resource.

11. The method according to claim 9 or 10, characterized in that: The sending of the first information includes: The first information is sent to a second communication device or a positioning server.

12. The method according to any one of claims 9 to 11, characterized in that The reference signal is a sidelink positioning reference signal SL PRS.

13. The method according to claim 12, characterized in that The method further comprises: Fourth information is sent, where the fourth information includes a physical layer sidelink shared channel PSSCH and / or a demodulation reference signal DMRS.

14. The method according to any one of claims 9 to 13, characterized in that The reference signal resources are agreed upon by the protocol, configured at the factory, or configured by network equipment or other communication devices through signaling.

15. The method according to any one of claims 9 to 14, characterized in that The antenna identifier is an antenna reference point identifier ARP ID.

16. A communication device, characterized in that: include: A module for executing the method according to any one of claims 1 to 8, or a module for executing the method according to any one of claims 9 to 15.

17. A communication device, characterized in that: include: A processor, wherein the processor is coupled to a memory, the memory stores computer-executable instructions, and the processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of claims 1 to 8, or executes the method according to any one of claims 9 to 15.

18. A computer-readable storage medium, characterized in that: Used to store a computer program, the computer program comprising instructions for implementing the method according to any one of claims 1 to 8, or instructions for executing the method according to any one of claims 9 to 15.

19. A computer program product, comprising computer program code, characterized in that: When the computer program code runs on a computer, the computer is enabled to implement the method according to any one of claims 1 to 8 or to execute the method according to any one of claims 9 to 15.

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