WO2023217025A1

WO2023217025A1 - Sidelink positioning method, information sending method, and terminal, server and device

Info

Publication number: WO2023217025A1
Application number: PCT/CN2023/092470
Authority: WO
Inventors: 张宏平; 潘翔; 郑倩
Original assignee: 维沃移动通信有限公司
Priority date: 2022-05-11
Filing date: 2023-05-06
Publication date: 2023-11-16
Also published as: CN117098223A

Abstract

The present application belongs to the technical field of communications. Disclosed are a sidelink positioning method, an information sending method, and a terminal, a server and a device. The sidelink positioning method in the embodiments of the present application comprises: a first terminal acquiring N sets of sidelink (SL) positioning reference signal configurations of a second terminal, wherein the first terminal is a target terminal for SL positioning, the second terminal is an auxiliary terminal or an anchor terminal for SL positioning, and N is a positive integer; the first terminal determining a target SL positioning reference signal configuration from the N sets of SL positioning reference signal configurations; the first terminal sending a first message, wherein the first message is used for requesting for activation: sending an SL positioning reference signal corresponding to the target SL positioning reference signal configuration; and the first terminal performing an SL positioning reference signal measurement on the basis of the target SL positioning reference signal configuration.

Description

Side link positioning method, information sending method, terminal, server and equipment

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202210515811.X filed in China on May 11, 2022, the entire content of which is incorporated herein by reference.

Technical field

This application belongs to the field of communication technology, and specifically relates to a side link positioning method, an information sending method, a terminal, a server and a device.

Background technique

In some communication systems, sidelink (SL) transmission is supported, that is, data transmission is performed directly between terminals on the physical layer. However, currently the terminal only supports positioning technology based on mobile networks, that is, the wireless access network equipment sends downlink positioning reference signals and the terminal performs measurements, or the terminal sends uplink positioning reference signals and the wireless access network equipment performs measurements to achieve positioning. It can be seen that the current terminal cannot support SL positioning, resulting in poor terminal positioning performance.

Contents of the invention

Embodiments of the present application provide a side link positioning method, device, terminal, server and wireless access network equipment to solve the problem of poor positioning performance of the terminal due to the inability of the terminal to support SL positioning.

In the first aspect, a side link positioning method is provided, including:

The first terminal acquires N sets of side link SL positioning reference signal configurations of the second terminal, where the first terminal is a target terminal for SL positioning, and the second terminal is an auxiliary terminal or anchor terminal for SL positioning, N is a positive integer;

The first terminal determines the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

The first terminal sends a first message, the first message is used to request activation: sending an SL positioning reference signal corresponding to the target SL positioning reference signal configuration;

The first terminal executes the SL positioning reference signal based on the target SL positioning reference signal configuration. No. measurement.

In the second aspect, a side link positioning method is provided, including:

The second terminal receives an instruction message, the instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration, and the second terminal is an auxiliary terminal or anchor terminal for SL positioning;

The second terminal sends an SL positioning reference signal based on the target SL positioning reference signal configuration.

In a third aspect, a method of sending information includes:

The wireless access network device sends a system information message, where the system information message includes side link SL positioning reference signal configurations of the M terminals;

Wherein, M is a positive integer, the M terminals include a second terminal, the SL positioning reference signal configuration of the second terminal includes N sets of SL positioning reference signal configurations, and the second terminal is an auxiliary terminal or anchor for SL positioning. Point terminal, N is a positive integer.

In the fourth aspect, a side link positioning device is provided, including:

An acquisition module configured to acquire N sets of side link SL positioning reference signal configurations of a second terminal, where the first terminal corresponding to the device is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning or Anchor terminal, N is a positive integer;

A determination module, configured to determine the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

A first sending module, configured to send a first message, where the first message is used to request activation: sending the SL positioning reference signal corresponding to the target SL positioning reference signal configuration;

An execution module, configured to perform SL positioning reference signal measurement based on the target SL positioning reference signal configuration.

In the fifth aspect, a side link positioning device is provided, including:

The first receiving module is used to receive an instruction message. The instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration. The second terminal corresponding to the device is an auxiliary device for SL positioning. terminal or anchor terminal;

The first sending module is configured to send the SL positioning reference signal based on the target SL positioning reference signal configuration.

In a sixth aspect, an information sending device is provided, including:

A first sending module, configured to send a system information message, where the system information message includes side link SL positioning reference signal configurations of M terminals;

In a seventh aspect, a terminal is provided. The terminal is a first terminal and includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The programs or instructions are processed by the processor. When the processor is executed, the steps of the side link positioning method on the first terminal side as provided in the embodiment of the present application are implemented.

In an eighth aspect, a terminal is provided. The terminal is a first terminal and includes a processor and a communication interface, wherein the communication interface is used to obtain N sets of side link SL positioning reference signal configurations of the second terminal, wherein , the first terminal is the target terminal for SL positioning, the second terminal is an auxiliary terminal or anchor terminal for SL positioning, and N is a positive integer; the processor or communication interface is used to generate the N sets of SL positioning reference signals. In the configuration, the target SL positioning reference signal configuration is determined; the communication interface is also used to send a first message, the first message is used to request activation: send the SL positioning reference signal corresponding to the target SL positioning reference signal configuration; based on the Target SL positioning reference signal configuration, perform SL positioning reference signal measurement.

In a ninth aspect, a terminal is provided. The terminal is a second terminal, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. The programs or instructions are processed by the processor. When the server is executed, the steps of the side link positioning method on the second terminal side provided by the embodiment of the present application are implemented.

In a tenth aspect, a terminal is provided. The terminal is a second terminal and includes a processor and a communication interface. The communication interface is used to receive an instruction message. The instruction message is used to request activation: send target side chain. The SL positioning reference signal is configured with a corresponding SL positioning reference signal, and the second terminal corresponding to the device is an auxiliary terminal or anchor terminal for SL positioning; based on the target SL positioning reference signal configuration, the SL positioning reference signal is sent.

In an eleventh aspect, a radio access network device is provided, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are processed by the processor. When the processor is executed, the steps of the information sending method provided by the embodiment of the present application are implemented.

In a twelfth aspect, a wireless access network device is provided, including a processor and a communication interface, wherein the communication interface is used to send a system information message, and the system information message includes side link SL positioning of M terminals Reference signal configuration; where M is a positive integer, the M terminals include a second terminal, the SL positioning reference signal configuration of the second terminal includes N sets of SL positioning reference signal configurations, and the second terminal is SL positioned. Auxiliary terminal or anchor terminal, N is a positive integer.

In a thirteenth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the side chain on the first terminal side provided by the embodiment of the present application is implemented. The steps of the path positioning method, or when the program or instructions are executed by the processor, the steps of the side link positioning method on the second terminal side provided by the embodiment of the present application are implemented, or when the program or instructions are executed by the processor Steps to implement the information sending method provided by the embodiments of this application.

In a fourteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the first method provided by the embodiment of the present application. A side link positioning method on the terminal side, or the processor is used to run a program or instructions to implement the side link positioning method on the second terminal side provided by the embodiment of the present application, or the processor is used to run a program or instructions to implement the information sending method provided by the embodiments of this application.

In a fifteenth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the methods provided by the embodiments of the present application. The steps of the side link positioning method on the first terminal side, or the computer program/program product is executed by at least one processor to implement the steps of the side link positioning method on the second terminal side provided by the embodiment of the present application, or , the computer program/program product is executed by at least one processor to implement the steps of the information sending method provided by the embodiment of the present application.

In a sixteenth aspect, a positioning system is provided, including: a first terminal, a second terminal and a wireless access network device. The terminal can be used to perform the steps of the side link positioning method described in the first aspect, so The second terminal may be configured to perform the steps of the side link positioning method described in the second aspect, and the radio access network device may be configured to perform the steps of the information sending method described in the third aspect.

In this embodiment of the present application, the first terminal obtains N sets of side link SL positioning reference signal configurations of the second terminal, where the first terminal is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning. Or anchor terminal, N is a positive integer; the first terminal is positioned in the N sets of SLs In the reference signal configuration, the target SL positioning reference signal configuration is determined; the first terminal sends a first message, the first message is used to request activation: sending the SL positioning reference signal corresponding to the target SL positioning reference signal configuration; so The first terminal performs SL positioning reference signal measurement based on the target SL positioning reference signal configuration. This enables the terminal to support SL positioning to improve terminal positioning performance.

Description of the drawings

Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is a flow chart of a side link positioning method provided by an embodiment of the present application;

Figure 3 is a flow chart of another side link positioning method provided by an embodiment of the present application;

Figure 4 is a flow chart of an information sending method provided by an embodiment of the present application;

Figure 5 is a schematic diagram of a side link positioning method provided by an embodiment of the present application;

Figure 6 is a schematic diagram of another side link positioning method provided by an embodiment of the present application;

Figure 7 is a schematic diagram of another side link positioning method provided by an embodiment of the present application;

Figure 8 is a schematic diagram of another side link positioning method provided by an embodiment of the present application;

Figure 9 is a structural diagram of a side link positioning device provided by an embodiment of the present application;

Figure 10 is a structural diagram of another side link positioning device provided by an embodiment of the present application;

Figure 11 is a structural diagram of an information sending device provided by an embodiment of the present application;

Figure 12 is a structural diagram of a communication device provided by an embodiment of the present application;

Figure 13 is a structural diagram of a terminal provided by an embodiment of the present application;

Figure 14 is a structural diagram of a radio access network device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be used in other forms than as illustrated or described herein. The objects can be implemented in a sequence other than those mentioned above, and the objects distinguished by "first" and "second" are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (Long Term Evolution, LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , Vehicle User Equipment (VUE), Pedestrian User Equipment (PUE), Road side unit (RSU), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or Furniture, etc.), game consoles, personal computers (PCs), teller machines or self-service machines and other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, Smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, smart helmets, smart joysticks, etc.), smart wristbands, smart Can clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11.

In the embodiment of the present application, sidelink (sidelink, or translated as secondary link, side link, side link, etc., referred to as SL) transmission can be performed between terminals 11, that is, the terminals 11 can directly transmit on the physical layer. Perform data transfer. SL transmission between terminals 11 may be broadcast, unicast, multicast or multicast, etc. And the terminals for SL transmission can be all online or all offline, or some devices can be online and some offline.

The network side equipment 12 may include radio access network equipment and core network equipment, where the radio access network equipment may also be called a radio access network (Radio Access Network, RAN), radio access network function or radio access network unit. . Wireless access network equipment can include base stations, Wireless Local Area Network (WLAN) access points or Wireless Fidelity (WiFi) nodes, etc. The base station can be called Node B, Evolved Node B (Evolved Node B) , eNB), access point, base transceiver station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended service set (Extended Service Set, ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms, and needs to be explained However, in the embodiment of this application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), applied function Function (Application Function, AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiment of this application, only the core network equipment in the NR system is used as an example for introduction, and the specific type of the core network equipment is not limited.

In this embodiment of the present application, the positioning server may be a core network device, such as an LMF.

In some embodiments, SL transmission may include two resource allocation modes (modes). One is mode1, which schedules resources for network-side devices; the other is mode2, where the terminal decides what resources to use for transmission. The resource information may come from broadcast messages or preconfigured information from network-side devices. If the terminal works within the range of the network side device and has a Radio Resource Control (RRC) connection with the network side device, it can use the resources of mode1 and/or mode2. If the terminal works within the range of the network side device but is connected to the network side The device does not have an RRC connection and can work in mode2. If the terminal is outside the range of the network side device, it can work in mode2 and perform SL transmission according to the preconfigured information.

Among them, for mode 2, the working method can be as follows:

1) After resource selection is triggered, the terminal first determines the resource selection window. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered, and the upper boundary of the resource selection is at the T2 time after the trigger, where T2 is the terminal implementation method. The value selected within the packet delay budget (PDB) transmitted by its Transport Block (TB), T2 is not earlier than T1.

2) Before resource selection, the terminal needs to determine the candidate resources for resource selection and the candidate resource set (candidate resource set), based on the reference signal received power (RSRP) measured on the resources within the resource selection window and The corresponding RSRP threshold (RSRP threshold) is compared. If the RSRP is lower than the RSRP threshold, the resource can be included in the alternative resource set.

3) After the resource set is determined, the terminal randomly selects transmission resources from the alternative resource set. In addition, the terminal can reserve transmission resources for subsequent transmissions during this transmission.

A side link positioning method, device, terminal and server provided by embodiments of the present application will be described in detail below through some embodiments and application scenarios with reference to the accompanying drawings.

Please refer to Figure 2. Figure 2 is a flow chart of a side link positioning method provided by an embodiment of the present application. As shown in Figure 2, it includes the following steps, including:

Step 201: The first terminal acquires N sets of side link SL positioning reference signal (PRS) configurations of the second terminal, where the first terminal is a target terminal (target UE) for SL positioning, and the first terminal The second terminal is an auxiliary terminal or anchor terminal (anchor UE) for SL positioning, and N is a positive integer.

The above-described acquisition of the N sets of side-link SL positioning reference signal configurations of the second terminal may be to receive the N sets of side-link SL positioning reference signal configurations of the second terminal sent by the wireless access network device, or may be to receive the configuration of the N sets of side-link SL positioning reference signals of the second terminal. The N sets of side link SL positioning reference signal configurations of the second terminal may also be obtained by obtaining the N sets of side link SL positioning reference signal configurations of the second terminal preconfigured by the second terminal.

It should be noted that in the embodiment of the present application, step 201 may be a pre-configuration step, that is, the N sets of SL positioning reference signal configuration configured in this step may occur before receiving the SL positioning request, or may be used once or multiple times. SL positioning, that is to say, in the embodiment of this application, step 201 does not need to be performed every time SL positioning is performed. Step 201 can be performed once for one or multiple SL positionings, and the above N sets can be used in different SL positionings. The same or different configurations in the SL positioning reference signal configuration.

It should be noted that in this application, SL positioning refers to one or more terminals sending SL positioning reference signals on the side link interface (PC5) interface, and one or more other terminals measuring the SL positioning reference signals to obtain Position positioning mechanism.

In this embodiment of the present application, the SL positioning reference signal configuration may include but is not limited to at least one of the following:

The bandwidth of the SL positioning reference signal, the transmission resources of the SL positioning reference signal, the physical layer configuration of the SL positioning reference signal, the sparsity of the SL positioning reference signal, the transmission power of the SL positioning reference signal, etc.

The above-mentioned second terminal may be one or more terminals determined by the first terminal, or the above-mentioned second terminal may be one or more terminals indicated by the network side.

Step 202: The first terminal determines a target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations.

The above-mentioned first terminal determines the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations. The terminal selects the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations, for example: based on the positioning service quality ( Quality of Service, QoS) selects the above target SL positioning reference signal configuration. Or, in some embodiments, the above target SL positioning parameters The signal configuration may also be a target SL positioning reference signal configuration selected from N sets of SL positioning reference signal configurations based on the SL layer 2 identifier associated with the received target SL positioning reference signal configuration.

Step 203: The first terminal sends a first message, where the first message is used to request activation: sending an SL positioning reference signal corresponding to the target SL positioning reference signal configuration.

The above-mentioned first message may be sent to the radio access network device, may be sent to the second terminal, or the first message may be broadcast.

In addition, the above-mentioned first message may be used to request activation: the second terminal sends the SL positioning reference signal corresponding to the target SL positioning reference signal configuration.

The above-mentioned sending of the SL positioning reference signal corresponding to the target SL positioning reference signal configuration can be understood as sending the SL positioning reference signal based on the target SL positioning reference signal configuration. Specifically, the second terminal sends the SL positioning reference signal based on the target SL positioning reference signal configuration. SL positioning reference signal.

Step 204: The first terminal performs SL positioning reference signal measurement based on the target SL positioning reference signal configuration.

The first terminal performing SL positioning reference signal measurement based on the target SL positioning reference signal configuration may include the first terminal performing SL positioning reference signal measurement on resources associated with the target SL positioning reference signal configuration.

Wherein, the above-mentioned measurement of the SL positioning reference signal is performed to obtain the measurement result, which is used to determine the positioning of the first terminal.

In this embodiment, the SL positioning reference signal can be a reference signal sent by the terminal on the PC5 port that can be used for positioning measurement. For example, it can be a newly introduced positioning reference signal on PC5, or it can reuse the reference signal of the PC5 port that has been defined in the protocol. .

In the embodiment of the present application, the above steps can be used to realize that the terminal supports SL positioning, thereby improving the terminal positioning performance, and realizing terminal positioning in a scenario without mobile network coverage.

In addition, the above-mentioned N sets of SL positioning reference signal configurations can be configured in advance, so that when positioning is required, the above-mentioned first message is directly sent to request activation of sending the SL positioning reference signal corresponding to the target SL positioning reference signal configuration, thereby reducing positioning delay.

As an optional implementation manner, the first terminal obtains N sets of side link SL positioning reference signal configurations of the second terminal, including:

The first terminal receives a system information message from a wireless access network device, and the system information message The information message includes: SL positioning reference signal configuration of M terminals;

Wherein, M is a positive integer, the M terminals include the second terminal, and the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning reference signal configurations.

The above-mentioned system information messages are system information messages broadcast by wireless access network equipment. For example, the system information messages include system information block (System Information Block, SIB), or positioning system information block (Positioning SIB, posSIB), or SL positioning system information. block (sidelink posSIB).

And the above-mentioned first terminal receiving the system information message from the radio access network device may receive the system information message from one or more radio access network devices, such as receiving the system information message in multiple cells.

In this embodiment, it is possible to obtain the SL positioning reference signal configurations of M terminals through the wireless access network device.

Optionally, the system information message also includes at least one of the following:

Information about the M terminals;

Transmission resource information associated with the SL positioning reference signal configuration of the M terminals;

The positioning service quality QoS information corresponding to the SL positioning reference signal configuration of the M terminals;

The SL Layer 2 ID (Layer 2 ID) associated with the SL positioning service;

The target SL positioning reference signal is configured with an associated SL layer 2 identifier.

Among them, the information of the above M terminals includes at least one of the following:

The location information of the M terminals;

Identification information of the M terminals.

The location information of the M terminals may be the longitude and latitude information of the M terminals.

The identification information of the M terminals may include the SL layer 2 identification or terminal identification of the M terminals.

Each terminal can include one or more sets of SL positioning reference signal configurations. In the case of multiple sets of SL positioning reference signal configurations, each set of SL positioning reference signal configurations has a corresponding configuration index, and each set of SL positioning reference signal configurations corresponds to Transport resources.

In some implementations, the above transmission resources may include at least one of the following:

The first configuration authorization type resources, the second configuration authorization type resources, dynamic scheduling resources and autonomous selection resources;

Wherein, the first configuration authorization type resource is: a transmission resource that the first terminal can directly send the SL positioning reference signal;

The second configuration authorization type resource is: a transmission resource for the first terminal to send an SL positioning reference signal based on an activation command;

The dynamic scheduling resources are resources dynamically scheduled by the radio access network device for sending SL positioning reference signals;

The autonomously selected resource is a resource selected by the first terminal through perception for sending the SL positioning reference signal.

The above-mentioned first configured grant type resource may be a configured grant type 1 (configured grant type 1) resource in mode 1 (mode1) defined in the protocol. The above-mentioned transmission resource that the first terminal can directly send the SL positioning reference signal can be understood as, The terminal can immediately use these transmission resources to send SL positioning reference signals. In addition, the above configuration message may indicate the resource pool in which the first configuration authorization type resource is located.

The above-mentioned second configured grant type resource may be a configured grant type 2 (configured grant type 2) resource in mode 1 (mode1) defined in the protocol. The above-mentioned transmission resource for the first terminal to send the SL positioning reference signal based on the activation command can be understood as , the terminal needs to receive the activation command of these resources before it can send SL positioning reference signals on these resources.

The above self-selected resources may be mode 2 resources defined by the protocol. These resources are resources self-selected by the terminal. These self-selected resources may be one or more self-selected resources indicated by the network side for sending SL positioning reference signals. Resource pool of resources.

The positioning QoS corresponding to the above SL positioning reference signal configuration may be used by the first terminal to use the target SL positioning reference signal configuration according to this selection.

The above-mentioned SL layer 2 identifier associated with the SL positioning service may be used by the first terminal to use the target SL positioning reference signal configuration according to this selection.

It should be noted that in some embodiments, the SL layer 2 identifier associated with each set of SL positioning reference signal configuration, the QoS information corresponding to each set of SL positioning reference signal configuration, and the SL layer 2 identifier associated with the SL positioning service may be pre-configured. of.

It should be noted that in this embodiment of the present application, the SL layer 2 identifiers associated with different positioning services may be the same or different. In different situations, a specific SL layer 2 identifier is associated with a specific positioning service. The SL layer 2 identifiers associated with different SL positioning reference signal configurations may be the same or different. In different situations, a specific SL layer 2 identifier is associated with a specific SL positioning reference signal configuration.

In this embodiment, based on the content included in the system information message, the first terminal can select the corresponding target SL positioning reference signal configuration to perform SL positioning reference signal measurement, so as to improve the flexibility of SL positioning.

The first terminal receives a broadcast message from a second terminal device, the broadcast message includes: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning reference signal configurations.

Wherein, the first terminal receiving the broadcast message from the second terminal device may receive broadcast messages from one or more second terminal devices.

In this embodiment, the SL positioning reference signal configuration of the second terminal can be obtained by receiving a broadcast message from the second terminal device, so that terminal positioning can be achieved in a scenario without mobile network coverage. Of course, in this embodiment, in Terminal positioning can also be achieved in scenarios with mobile network coverage.

Optionally, the broadcast message also includes at least one of the following:

The location information of the second terminal;

Transmission resource information associated with the SL positioning reference signal configuration of the second terminal;

QoS information configured by the SL positioning reference signal of the second terminal;

The SL layer 2 identifier associated with the SL positioning service;

The location information of the second terminal may be the latitude and longitude information of the second terminal.

The transmission resources, QoS information and SL layer 2 identifier associated with the above SL positioning reference signal configuration can be found in the corresponding descriptions of the above embodiments, and will not be described again here.

It should be noted that in some embodiments, the transmission resources, QoS information and SL layer 2 identifier associated with the above-mentioned SL positioning reference signal configuration may also be pre-configured.

In this embodiment, based on the content included in the above broadcast message, the first terminal can select the corresponding target SL positioning reference signal configuration to perform SL positioning reference signal measurement, so as to improve the flexibility of SL positioning.

As an optional implementation manner, the first terminal sends a first message, including:

The first terminal sends the first message to the radio access network device, where the first message includes at least one of the following:

The identification information of the second terminal;

The identification information of the target SL positioning reference signal configuration;

QoS information, the QoS information matches the target SL positioning reference signal configuration.

The above-mentioned first message may be an RRC message, such as an SL terminal information message (sidelink UE information), or a newly introduced RRC message, or a media access control (Media Access Control, MAC) control element (Control Element, CE).

The identification information of the target SL positioning reference signal configuration may be an index or identification of the target SL positioning reference signal configuration.

In this embodiment, it is possible to send a request to the radio access network device to activate the SL positioning reference signal corresponding to the target SL positioning reference signal configuration. Specifically, after receiving the above first message, the radio access network device sends a request to the second terminal. Send an instruction message to instruct the second terminal to send the SL positioning reference signal based on the target SL positioning reference signal configuration.

The first terminal broadcasts the first message on the PC5 interface, wherein the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference. The signal configuration, or the SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.

In this implementation, the above-mentioned first message may be a discovery message, such as a discovery announcement message, or a direct link establishment request message (DIRECT LINK ESTABLISHMENT REQUEST) message, or a sidelink positioning protocol layer message.

The SL destination layer 2 ID of the first message uses the SL layer 2 ID corresponding to the SL positioning service. That is, the SL positioning service corresponds to an SL layer 2 ID. The SL layer 2 ID can be the second one in step 5. The terminal or the wireless access network device sends the first terminal, or It is preset or specified by the protocol, that is, it is preset or specified by the protocol that a certain SL layer 2 identifier corresponds to the SL positioning service.

In addition, in this embodiment, since the SL layer 2 identifier of the first message corresponds to the target SL positioning reference signal configuration or the SL layer 2 identifier corresponds to the QoS corresponding to the target SL positioning reference signal configuration, the first message can be implemented Indicates activation of sending the target SL positioning reference signal configuration, such as the SL layer 2 identifier at the target SL positioning reference signal configuration level. The first terminal determines to use the target SL positioning through the above SL layer 2 identifier.

Optionally, when the SL layer 2 identifier of the first message corresponds to the SL positioning service, the identification information of the first terminal is preset or specified by the protocol.

In this embodiment, it is possible to activate and send the SL positioning reference signal corresponding to the target SL positioning reference signal configuration through the PC5 interface, so as to realize terminal positioning in a scenario without mobile network coverage. Of course, in this embodiment, when there is mobile Terminal positioning can also be achieved in network coverage scenarios.

In this embodiment of the present application, the first terminal obtains N sets of side link SL positioning reference signal configurations of the second terminal, where the first terminal is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning. Or an anchor terminal, N is a positive integer; the first terminal determines the target SL positioning reference signal configuration in the N sets of SL positioning reference signal configurations; the first terminal sends a first message, the first message Used to request activation: send the SL positioning reference signal corresponding to the target SL positioning reference signal configuration; the first terminal performs SL positioning reference signal measurement based on the target SL positioning reference signal configuration. This enables the terminal to support SL positioning to improve terminal positioning performance.

Please refer to Figure 3. Figure 3 is a flow chart of another side link positioning method provided by an embodiment of the present application. As shown in Figure 3, it includes the following steps:

Step 301. The second terminal receives an instruction message, which is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration. The second terminal is an auxiliary terminal or anchor point for SL positioning. terminal.

The above instruction message may be an instruction message received from the radio access network device, or may be an instruction message received from the first terminal.

Step 302: The second terminal sends an SL positioning reference signal based on the target SL positioning reference signal configuration.

The above-mentioned sending of the SL positioning reference signal may include sending the SL positioning reference signal on the side link interface (PC5 port), so that the first terminal measures the SL positioning reference signal to obtain a measurement result, and the measurement result is used to determine the first terminal positioning.

As an optional implementation manner, the second terminal receives an indication message, including:

The second terminal receives the instruction message from the radio access network device, where the instruction message includes at least one of the following:

The target SL positioning reference signal configures associated transmission resources.

The above indication message can be sent through MAC CE or Downlink Control Information (DCI), which can activate the SL positioning reference signal transmission through MAC CE or DCI. Specifically, it can activate the target SL positioning reference signal configuration, or activate the SL Transmission resources associated with the positioning reference signal, such as activating the transmission resources associated with the target SL positioning reference signal configuration, which means activating the transmission of the SL positioning reference signal corresponding to the target SL positioning reference signal configuration.

In some embodiments, the above indication message may include an identification or index of the target SL positioning reference signal configuration, or may include an index of a resource associated with the target SL positioning reference signal configuration. In addition, when the transmission resource associated with the target SL positioning reference signal configuration is a configured grant type 2 resource of mode 1, the above activation message can also carry the time-frequency resource information of the configured grant type 2 resource. Therefore, the second terminal directly sends the SL positioning reference signal on the resource corresponding to the time-frequency resource information.

In this embodiment, the target SL positioning reference signal configuration is determined through the instruction message, so that the transmission of the corresponding SL positioning reference signal is activated only when needed, so as to save the wireless resources of the PC5 port and improve the flexibility of SL positioning. In addition, when the activation message is MAC CE or DCI, through Activation through MAC CE or DCI can reduce latency compared to activation through RRC messages.

As an optional implementation, before the second terminal receives the indication message, the method further includes:

The second terminal receives a configuration message from the wireless access network device, the configuration message includes N sets of SL positioning reference signal configurations, and the target SL positioning reference signal configuration is one of the N sets of SL positioning reference signal configurations. Configuration, N is a positive integer.

In some implementations, the above configuration message may be an RRC configuration message, such as an RRC Reconfiguration (RRC Reconfiguration) message.

It should be noted that in the embodiment of the present application, the above step can be understood as a pre-configuration step, that is, the N sets of SL positioning reference signal configuration configured in this step can occur before receiving the SL positioning request, or can be used for one or more times. Multiple SL positioning, that is to say, in the embodiment of the present application, this step does not need to be performed every time SL positioning is performed. Performing this step once can be used for one or multiple SL positioning, and the above N can be used in different SL positioning. Set the same or different configurations in the SL positioning reference signal configuration.

Optionally, the configuration message also includes at least one of the following:

Transmission resource information associated with the N sets of SL positioning reference signal configurations;

The activation status of the N sets of SL positioning reference signal configurations;

The activation status of the transmission resources associated with the N sets of SL positioning reference signal configurations;

The SL layer 2 identifier associated with the SL positioning service;

In some implementations, the transmission resources corresponding to the transmission resource information may include at least one of the following:

Wherein, the first configuration authorization type resource is: a transmission resource that the second terminal can directly send the SL positioning reference signal;

The second configuration authorization type resource is: a transmission resource for the second terminal to send an SL positioning reference signal based on an activation command;

The dynamic scheduling resource is dynamically scheduled by the wireless access network device for sending SL positioning parameters. Resources for testing signals;

The autonomously selected resource is a resource selected by the second terminal through perception for sending the SL positioning reference signal.

The activation status of the above-mentioned N sets of SL positioning reference signal configurations may be, and each set of SL positioning reference signal configurations has a corresponding activation status, such as activated or inactive. When the activation state is active, the first terminal can immediately use these transmission resources to send the SL positioning reference signal. When the activation state is inactive, the first terminal needs to wait for subsequent receipt of the activation command before using these transmission resources to send the SL positioning reference signal. Signal. The activation status of the transmission resources associated with the above N sets of SL positioning reference signal configurations is the same.

The second terminal receives the first message broadcast by the first terminal on the PC5 interface, wherein the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target The SL positioning reference signal configuration, or the SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.

Optionally, the first message further includes: identification information of the target SL positioning reference signal configuration.

Optionally, before the second terminal receives the first message broadcast by the first terminal on the PC5 interface, the method further includes:

The second terminal sends a broadcast message, the broadcast message includes: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning Reference signal configuration.

Optionally, the broadcast message also includes at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

The location information of the second terminal;

Transmission resource information associated with the SL positioning reference signal of the second terminal;

In this implementation manner, the above broadcast message may refer to the corresponding description of the embodiment shown in FIG. 2 and will not be described again here.

As an optional implementation manner, the second terminal is preset with at least one of the following:

The SL layer 2 identifier corresponding to the SL positioning service;

The SL positioning reference signal configuration of the second terminal;

QoS information configured by the SL positioning reference signal of the second terminal.

The above-mentioned second terminal preset may be defined by the protocol or obtained by the second terminal in advance.

It should be noted that this embodiment is an implementation of the second terminal corresponding to the embodiment shown in Figure 2. For its specific implementation, please refer to the relevant description of the embodiment shown in Figure 2 to avoid repeated description. No further details will be given in this embodiment.

Please refer to Figure 4. Figure 4 is a flow chart of an information sending method provided by an embodiment of the present application. As shown in Figure 4, it includes the following steps:

Step 401: The wireless access network device sends a system information message, where the system information message includes side link SL positioning reference signal configurations of M terminals;

For the above system information message, please refer to the corresponding description of the embodiment shown in FIG. 2 and will not be described again here.

In this embodiment, through the above system information message, the second terminal can send an SL positioning reference signal based on the SL positioning reference signal configuration, and the first terminal performs SL positioning reference signal measurement, thereby enabling the terminal to support SL positioning and improving the terminal's positioning performance.

As an optional implementation, the system information message also includes at least one of the following:

Information about the M terminals;

Transmission resource information associated with the SL positioning reference signals of the M terminals;

Positioning QoS information configured by the SL positioning reference signals of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

Optionally, the information of the M terminals includes at least one of the following:

The location information of the M terminals;

Identification information of the M terminals.

Optionally, the identification information of the M terminals includes SL layer 2 identities of the M terminals.

Optionally, the system information message includes a system information block, a positioning system information block, or an SL positioning system information block.

In this implementation manner, reference can be made to the corresponding description of the embodiment shown in FIG. 2 for the above system information message, and will not be described again here.

As an optional implementation, the method further includes:

The radio access network device receives a first message sent by a first terminal, where the first terminal is a target terminal for SL positioning, and the first message is used to request activation: sending a target SL positioning reference signal configuration corresponding to SL positioning reference signal.

Optionally, the first message includes at least one of the following:

The identification information of the second terminal;

Quality of service QoS information, the QoS information matches the target SL positioning reference signal configuration.

In this implementation manner, reference may be made to the corresponding description of the embodiment shown in FIG. 2 for the above first message, which will not be described again here.

Optionally, the method also includes:

The radio access network device sends an instruction message to the second terminal, where the instruction message is used to request activation: sending the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration.

Optionally, the indication message includes at least one of the following:

In this implementation manner, for the above instruction message, reference may be made to the corresponding description of the embodiment shown in FIG. 3 and will not be described again here.

As an optional implementation manner, before the radio access network device sends the system information message, the method further includes:

The radio access network device sends a configuration message to the second terminal, where the configuration message is used to configure N sets of SL positioning reference signal configurations, where N is a positive integer.

Optionally, the configuration message is also used to include at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

Optionally, the transmission resources corresponding to the transmission resource information include at least one of the following:

In this implementation manner, for the above configuration message, reference may be made to the corresponding description of the embodiment shown in FIG. 3 , and will not be described again here.

As an optional implementation, the method further includes:

The wireless access network device receives an auxiliary message sent by the positioning server, where the auxiliary message includes:

Information about the M terminals;

SL positioning reference signal configuration of the M terminals;

The corresponding positioning service quality QoS information configured by the SL positioning reference signals of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The SL layer 2 identifier associated with the target SL positioning reference signal configuration.

For the content included in the above-mentioned auxiliary message, please refer to the corresponding description of the above-mentioned embodiments, and will not be described again here.

In this embodiment, since the receiving positioning server sends the above assistance message, it can assist The wireless access network device can better complete SL positioning-related operations, for example, it can assist the wireless access network device in sending a more accurate instruction message to the second terminal.

It should be noted that this embodiment is an implementation of the radio access network equipment corresponding to the embodiments shown in Figures 2 and 3. For its specific implementation, please refer to the embodiments shown in Figures 2 and 3. Relevant descriptions will not be repeated in this embodiment in order to avoid repeated descriptions.

The following is an example of the side link positioning method provided by the embodiment of the present application through two embodiments:

Example 1:

The main technical solutions of this embodiment are:

For PC5 port-based positioning (that is, the SL terminal provides positioning functions similar to LMF), the network configures one or more sets of SL PRS configurations for the anchor UE (such as RSU), and the base station broadcasts this information through system information. When the target UE needs to perform positioning based on the PC5 port, the target UE decides which anchor UE configuration to use, sends a message to the base station to request activation of the SL PRS corresponding to these PRS configurations, and then the base station activates the UE through MAC CE or DCI. The PC5 interface sends this set of SL PRS configuration. By configuring multiple sets of SL PRS configurations in advance and broadcasting them, when positioning measurement is required, the target UE requests activation of SL PRS transmission, and the base station quickly activates through MAC CE or DCI, thus reducing the positioning delay, as shown in Figure 5. Includes the following steps:

Step 1: The base station sends an RRC Reconfiguration (RRC Reconfiguration) message to one or more anchor UEs (also called auxiliary UEs). The message carries one or more sets of SL PRS configurations and corresponding SL PRS (in PC5 port) transmission resources, each set of configurations can correspond to a configuration index.

Optionally, the above message also carries the activation status of the SL PRS configuration (or SL PRS transmission resource). When the activation status is activated, the anchor UE immediately uses these transmission resources to send SL PRS. When the activation status is inactive, the anchor UE The UE needs to wait for subsequent receipt of the activation command before sending the SL PRS.

Optionally, the transmission resource of SL PRS can be configured grant type 1 resource or configured grant type 2 resource of mode1. These two resources are periodic grant resources. When it is the former, the anchor UE immediately uses these transmission resources to send SL PRS. In this case, the base station can indicate the resource pool where the configured grant type 1 resource is located. When it is the latter, The anchor UE needs to wait for subsequent receipt of the activation command before sending SL PRS.

Optionally, the transmission resources of SL PRS can also be resources dynamically scheduled by the base station in mode 1, or resources independently selected by the anchor UE in mode 2. Optionally, for the latter, one or more resource pools that can be used to send SL PRS can be indicated.

SL PRS is a reference signal sent by the UE on the PC5 port that can be used for positioning measurements. It can be a newly introduced positioning reference signal on PC5, or it can reuse the reference signal of the existing PC5 port.

Optionally, before step 1, the base station receives a message sent by the LMF, which is used to request to obtain the SL PRS configuration information of the anchor UE under the base station, thereby triggering the base station to perform step 1. The message can include one or more of the following:

Requested PRS characteristic information (such as PRS bandwidth, PRS transmission cycle, etc.);

Requested QoS information, such as positioning delay, positioning accuracy, etc.;

Number of sets of SL PRS configurations (different SL PRS configurations correspond to different QoS requirements).

Step 2: The anchor UE sends an RRC Reconfiguration Complete message to the base station; if the anchor UE receives the SL PRS configuration that needs to be sent immediately in step 1 (for example, the activation status is active, or the configuration is mode1 configured grant type 1 resource), the UE starts sending SL PRS on PC5 port, otherwise the configuration is saved but SL PRS is not sent.

Step 3: The base station sends a message to the LMF. The message carries one or more sets of SL PRS configurations of the anchor UE, the configuration index (if there are multiple sets), and the resources corresponding to each set of configurations. Optionally, the message also carries one or more of the following information:

The location information of each anchor UE, such as latitude and longitude information.

The ID information of each anchor UE, such as the Layer 2 ID of the anchor UE.

It should be noted that the response message may include the SL PRS configuration of one or more anchor UEs.

Step 4: The LMF sends a message to the base station, such as an Assistance Information Control (Assistance Information Control) message. This message is used to provide the base station with auxiliary information broadcast by the base station. The message carries posSIB or sidelink posSIB. These posSIBs or sidelink posSIBs carry the anchor UE's SL PRS configuration and associated SL resources. Among them, sidelink posSIB can be considered as posSIB used for sidelink positioning.

Optionally, these posSIBs or sidelink posSIBs may include SL PRS configurations and associated SL resources of multiple base stations (this base station and adjacent base stations) or multiple anchor UEs in multiple cells.

Among them, steps 3 and 4 are optional steps. In step 4, the positioning server can encrypt posSIB or sidelink posSIB, so that in subsequent step 5, only the authenticated UE can decrypt and use the information in these posSIB or sidelink posSIB.

Step 5: The base station broadcasts system information. The broadcast system information includes SIB (for example, SIB12) or posSIB or sidelink posSIB, which includes the SL PRS configuration of the anchor UE and the associated SL resources. Target UE obtains these SIB or posSIB or sidelink posSIB including SL PRS configuration.

Optionally, the broadcast system information may include SL PRS configurations and associated SL resources of multiple base stations (this base station and adjacent base stations) or multiple anchor UEs under multiple cells.

Optionally, each anchor UE can include one or more sets of SL PRS configurations, configuration index (if there are multiple sets) and resources corresponding to each set of configurations. Optionally, it also includes the positioning QoS corresponding to each set of SL PRS configurations. Used by target UE to choose which set of SL PRS configuration to use.

Optionally, also carry one or more of the following information:

The ID information of each anchor UE, such as the Layer 2 ID of the anchor UE.

Step 6: When the target UE needs positioning, the terminal selects one or more anchor UEs and/or the SL PRS configuration of the anchor UE based on the positioning QoS.

Step 7: The target UE sends a message to the base station, such as an RRC message (for example, sidelink UE information or a newly introduced RRC message), or MAC CE. This message is used to request activation of SL PRS transmission. This message can carry the anchor UE list. and/or the SL PRS configuration index or QoS to be activated.

Step 8: The base station sends MAC CE or DCI to the anchor UE to activate SL PRS transmission, or activate the transmission resources associated with SL PRS. The MAC CE or DCI can carry the SL PRS configuration index, or the index of its associated resources; Optionally, when the transmission resource in step 1 is the configured grant type 2 resource of mode1, the MAC CE or DCI also carries the time-frequency resource information of the configured grant type 2 resource. Activation through MAC CE or DCI can reduce latency compared to RRC messages.

Step 9: The anchor UE transmits SL PRS on the designated (activated) resource on the PC5 port.

Step 10: The target UE performs SL PRS measurement and obtains the location.

Example 2:

In Embodiment 1, the target UE sends a request to the base station to activate SL PRS transmission. In this embodiment, the difference is that the target UE sends a broadcast message on the PC5 interface to request the anchor UE to activate and send SL PRS. The broadcast message uses the layer 2 ID corresponding to the sidelink positioning service or a specific SL PRS configuration. Through the broadcast message The transmission avoids the establishment of a sidelink unicast connection with each anchor UE, reduces the delay, and saves sidelink resources. As shown in Figure 6, it includes the following steps:

Step 1: The base station sends an RRC Reconfiguration message (RRC Reconfiguration message) to one or more anchor UEs (also called auxiliary UEs). The message carries one or more sets of SL PRS configurations and corresponding SL PRS ( In the transmission resources of PC5 port), each set of configurations can correspond to a configuration index.

Optionally, the transmission resource of SL PRS can be configured grant type 1 resource or configured grant type 2 resource of mode1. These two resources are periodic grant resources. When it is the former, the anchor UE immediately uses these transmission resources to send SL PRS. In this case, the base station can indicate the resource pool where the configured grant type 1 resource is located. When it is the latter, The anchor UE needs to wait for the subsequent activation command to be sent before sending the SL PRS.

The RRC reconfiguration message sent in the above step 1 can also carry the layer 2 ID. The layer 2 ID is preset. The layer 2 ID is used by the anchor UE to monitor the layer 2 ID to activate the corresponding SL PRS transmission. The layer 2 ID can be one, or It can be configured per SL PRS, that is, each set of SL PRS configuration corresponds to a layer 2 ID. Anchor UE starts monitoring the layer 2 ID after step 1 to activate SL PRS transmission after listening to the layer ID.

The ID information of each anchor UE, such as the Layer 2 ID of the anchor UE.

Optionally, these posSIBs or sidelink posSIBs may include SL PRS configurations and associated SL resources of multiple base stations (this base station and adjacent base stations) or multiple anchor UEs under multiple cells.

Step 5: The base station broadcasts system information, and the broadcast system information includes SIB (for example, SIB12) Or posSIB or sidelink posSIB, which includes the anchor UE's SL PRS configuration and associated SL resources. The Target UE obtains the SIB or posSIB or sidelink posSIB including the SL PRS configuration.

The above broadcast system information can also include layer 2 ID, or the layer 2 ID is preset. The layer 2 ID can be per SL positioning service, or it can be configured per SL PRS, that is, a specific layer2 ID and sidelink positioning service or a certain An SL PRS configuration association.

Step 6: When the target UE needs to perform positioning, the target UE broadcasts a Discovery message (such as discovery announcement) on the PC5 port, or broadcasts a DIRECT LINK ESTABLISHMENT REQUEST message on the PC5 port. , or broadcast sidelink positioning protocol layer messages on PC5 port. The destination layer 2 ID of this message uses the layer 2 ID corresponding to the SL positioning service, that is, the SL positioning service corresponds to a layer 2 ID. The layer 2 ID can be the one sent to the target UE in step 5, or It is preset or stipulated by the agreement, that is, it is preset or the agreement stipulates that a certain layer 2 ID corresponds to the SL positioning service. Optionally, these messages carry information used to indicate which set of SL PRS configuration is sent for activation; or for the layer 2 ID of the SL PRS configuration level, the target UE determines which set of SL PRS configuration to use, and the destination layer ID of these messages ) Use the determined layer 2 ID corresponding to the SL PRS configuration.

Step 7: There may be some anchor UEs around the target UE. The anchor UE that receives the message in step 6 triggers the sending of SL PRS based on the layer 2 ID. If the layer 2 ID is configured per SL PRS, the anchor UE triggers the sending of the layer 2 ID. Corresponding SL PRS. Optionally, if the resource used for SL PRS transmission configured by the base station in step 1 is the grant type 2 resource of mode 1, the anchor UE sends a message to the base station requesting activation of the grant type 2 resource. After the base station activates the resource, the anchor UE The UE sends SL PRS.

Only the anchor UE that can receive the message in step 6 will activate the sending of SL PRS. The anchor UE that has not received the message in step 6 will not trigger the sending of SL PRS, thus saving the sidelink transmission resources of the PC5 interface.

Step 8: The anchor UE transmits SL PRS on the designated (activated) resource on the PC5 port.

Step 9: The target UE performs SL PRS measurement and obtains the position.

Embodiment three:

Embodiments 1 and 2 are for scenarios with base station coverage (in coverage scenarios). At this time, the sidelink can communicate with the base station. For sidelink communication, there may be no base station coverage (out of coverage scenario), such as in a tunnel. This embodiment can be applied to out-of-coverage scenarios. The main idea is: the anchor UE is pre-configured with one or more sets of SL PRS configurations, and the target UE broadcasts by using the SL positioning service or positioning QoS or the layer 2 ID associated with the SL PRS configuration. To activate the anchor UE sends the corresponding SL PRS. As shown in Figure 7, it includes the following steps:

Step 1: The anchor UE is pre-configured with one or more sets of SL PRS configurations or one or more positioning QoS, and the L2 ID associated with the sidelink positioning service is pre-configured or specified by the protocol; optionally, it is pre-configured or specified by the protocol. Set SL PRS configuration or positioning QoS associated with a layer 2 ID.

Step 2: The target UE obtains the layer 2 ID associated with the SL positioning service or positioning QoS or SL PRS configuration. There are two possible solutions:

2a: The target UE is preconfigured or the protocol specifies the L2 ID associated with the sidelink positioning service; optionally, the target UE is preconfigured or the protocol specifies that each positioning QoS is associated with a layer 2 ID

2b: anchor UE broadcasts one or more sets of SL PRS configuration or positioning QoS on PC5 port, such as through Discovery message (for example, discovery announcement), or DIRECT LINK ESTABLISHMENT REQUEST message, or sidelink positioning protocol layer message. This message The destination layer 2 ID uses the layer 2 ID corresponding to the SL positioning service in step 1, that is, the SL positioning service corresponds to a layer 2 ID. Optionally, these messages carry the layer 2 ID associated with each positioning QoS or each SL PRS configuration. Optionally, it also carries the location information of the anchor UE, such as latitude and longitude information.

The one or more positioning QoS may be, for example, high-precision positioning QoS, medium-precision positioning QoS, low-precision positioning QoS, etc.

Step 3: When the target UE needs SL positioning, the target UE broadcasts a message on the PC5 port to request the anchor UE to send SL PRS, such as through a Discovery message (for example, discovery announcement), or a DIRECT LINK ESTABLISHMENT REQUEST message, or the sidelink positioning protocol layer. news. The destination layer 2 ID of this message uses the layer 2 ID corresponding to the SL positioning service, or the layer 2 ID corresponding to the positioning QoS, or the layer 2 ID corresponding to the SL PRS configuration. Optionally, the layer 2 ID corresponding to the positioning QoS or SL PRS configuration. The target UE selects according to its own positioning QoS from the layer 2 ID corresponding to multiple positioning QoS or multiple SL PRS configurations. Determined, for example, when the UE requires high-precision positioning, select the layer 2 ID of high-precision positioning QoS or the layer 2 ID of the SL PRS configuration corresponding to high-precision positioning QoS.

Step 4: There may be some anchor UEs around the target UE. The anchor UE that receives the message in step 3 triggers the sending of SL PRS based on the layer 2 ID; optionally, if the layer 2 ID is configured per SL PRS or positioning QoS, then the anchor UE The UE triggers and sends the SL PRS corresponding to the layer 2 ID.

Step 5: The anchor UE transmits SL PRS on the designated (activated) resource on the PC5 port.

Step 6: The target UE performs SL PRS measurement and obtains the position.

It should be noted that in this embodiment, there may be a technical solution that is parallel to the embodiment shown in FIG. 2 . In this parallel technical solution, steps 201 and 202 in the embodiment shown in FIG. 2 may not be performed. That is, That is to say, in the embodiments of this application, in some implementations, step 201 and step 202 shown in Figure 2 may not be executed. In addition, step 204 may configure a corresponding SL positioning reference signal for the first terminal to measure the target SL positioning reference signal. Specific plans can be as follows:

The first terminal measures the SL positioning reference signal corresponding to the target SL positioning reference signal configuration.

Embodiment 4:

This embodiment mainly describes the activation of SL PRS transmission by the core network, as shown in Figure 8, including the following steps:

Optionally, the transmission resource of SL PRS can be configured grant type 1 resource or configured grant type 2 resource of mode1. Both of these resources are periodic authorization resources. When it is the former , the anchor UE immediately uses these transmission resources to send SL PRS. In this case, the base station can specify the resource pool where the configured grant type 1 resource is located. When it is the latter, the anchor UE needs to wait for subsequent receipt of the activation command before sending SL PRS. .

In addition, the above message RRC reconfiguration message can carry the application code (application code) or restricted code (restricted code) corresponding to the positioning service.

The ID information of each anchor UE, such as the Layer 2 ID of the anchor UE.

Step 4: The LMF sends a message to the base station, such as an Assistance Information Control message. This message is used to provide the base station with assistance information broadcast by the base station. The message carries posSIB or sidelink posSIB. These posSIBs or sidelink posSIBs carry the anchor UE's SL PRS configuration and associated SL resources. Among them, sidelink posSIB can be considered as posSIB used for sidelink positioning.

Optionally, also carry one or more of the following information:

The ID information of each anchor UE, such as the Layer 2 ID of the anchor UE.

The above system information can also broadcast the application code or restricted code corresponding to the positioning service.

It should be noted that steps 1 and 5 may not carry the above information, and the application code or restricted code corresponding to the broadcast positioning service may be preset.

Step 7: The anchor UE sends a Discovery Announce message, which carries the application code or restricted code corresponding to the positioning service.

Step 8: The target UE receives the Discovery Announce sent by one or more anchor UEs. After receiving the message, in step 8, the anchor UE IDs of these UEs are sent to the core network node, such as Direct Discovery Name Management Function (DDNMF), and the core network sends messages (such as Announcing Alert messages) to these anchor UEs. To trigger the anchor UE to activate SL PRS transmission.

Step 9: The core network node sends a message to the anchor UE to trigger SL PRS transmission.

Step 10: The anchor UE transmits SL PRS on the designated (activated) resource on the PC5 port.

Step 11: The target UE performs SL PRS measurement and obtains the position.

In the embodiment of this application, positioning based on PC5 port can be implemented as follows:

Method 1: The base station configures one or more sets of SL PRS configurations for the anchor UE, and the base station broadcasts this information through system information. When the target UE needs to perform positioning based on the PC5 port, the target UE decides which anchor UE configuration to use, sends a message to the base station to request activation of the SL PRS corresponding to these PRS configurations, and then the base station activates the UE through MAC CE or DCI. The PC5 interface sends this set of SL PRS configuration.

Among them, the system information can be SIB, posSIB, or sidelink posSIB;

System information may include SL PRS configurations and associated SL resources of multiple base stations (this base station and adjacent base stations) or multiple anchor UEs under multiple cells.

In the system information, each anchor UE can include one or more sets of SL PRS configurations, configuration index (if there are multiple sets) and the resources corresponding to each set of configurations. Optionally, it also carries the location information of each anchor UE, such as Longitude and latitude information, or ID information of each anchor UE, such as the Layer 2 ID of anchor UE.

Target UE sends a message to the base station to request activation of SL PRS transmission. The message can carry the anchor UE list and/or the SL PRS configuration index to be activated.

Method 2: The base station configures one or more sets of SL PRS configurations for the anchor UE, and the base station broadcasts this information through system information. The target UE sends a broadcast message on the PC5 interface to request the anchor UE to activate and send SL PRS. The broadcast message uses the layer 2 ID corresponding to the sidelink positioning service or specific SL PRS configuration.

Among them, the base station carries the layer 2 ID corresponding to the sidelink positioning service or specific SL PRS configuration in the message configuring the SL PRS configuration for the anchor UE, and the anchor UE monitors the message corresponding to the layer 2 ID to activate SL PRS transmission.

The system message carries the layer 2 ID corresponding to the sidelink positioning service or specific SL PRS configuration.

Target UE broadcasts a message to activate anchor UE to send SL PRS. The message destination layer 2 ID uses the SL positioning service or the corresponding layer 2 ID configured by SL PRS.

Method 3: It can be applied to out-of-coverage scenarios without base stations. The anchor UE is pre-configured with one or more sets of SL PRS configurations, and the target UE uses the SL positioning service or positioning QoS or the layer 2 ID associated with the SL PRS configuration. Broadcast to activate the anchor UE to send the corresponding SL PRS.

Method 4: The base station configures one or more sets of SL PRS configurations for the anchor UE, and the base station broadcasts this information through system information. The Anchor UE sends a discovery announce message, and the target UE reports the detected anchor UE to the core network. The core network triggers anchor UE to activate SL PRS sending.

In the embodiment of this application, for positioning based on PC5 port, multiple sets of SL PRS configurations are configured in advance and broadcasted. When positioning measurement is required, the target UE requests to activate SL PRS transmission, and the base station performs quick activation through MAC CE or DCI, or The target UE broadcasts the layer 2 ID corresponding to the sidelink positioning service or SL PRS configuration, thereby triggering the anchor UE to activate and send SL PRS, thus reducing the positioning delay and saving sidelink resources.

Please refer to Figure 9. Figure 9 is a structural diagram of a side link positioning device provided by an embodiment of the present application. As shown in Figure 9, the side link positioning device 900 includes:

Acquisition module 901 is used to obtain N sets of side link SL positioning reference signal configurations of a second terminal, where the first terminal corresponding to the device is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning. Or anchor terminal, N is a positive integer;

Determining module 902, configured to determine the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

The first sending module 903 is configured to send a first message, where the first message is used to request activation: sending the SL positioning reference signal corresponding to the target SL positioning reference signal configuration;

Execution module 904 is configured to perform SL positioning reference signal measurement based on the target SL positioning reference signal configuration.

Optionally, the acquisition module 901 is used for:

Receive a system information message from a wireless access network device, where the system information message includes: SL positioning reference signal configuration of M terminals;

Information about the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The location information of the M terminals;

Identification information of the M terminals.

Optionally, the acquisition module 901 is used for:

Receive a broadcast message from a second terminal device, the broadcast message including: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes the N sets of side links SL positioning reference signal configuration.

Optionally, the broadcast message also includes at least one of the following:

The location information of the second terminal;

The SL layer 2 identifier associated with the SL positioning service;

Optionally, the first sending module 903 is used for:

Send the first message to a radio access network device, where the first message includes at least one of the following:

The identification information of the second terminal;

Optionally, the first sending module 903 is used for:

The first message is broadcast on the PC5 interface, where the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference signal configuration, or the The SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.

The above-mentioned side link positioning device can improve the positioning performance of the terminal.

The side link positioning device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, the terminal may include but is not limited to the types of terminals listed in the embodiments of this application, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiments of this application.

The side link positioning device provided by the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Please refer to Figure 10. Figure 10 is a structural diagram of another side link positioning device provided by an embodiment of the present application. As shown in Figure 10, the side link positioning device 1000 includes:

The first receiving module 1001 is used to receive an instruction message, the instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration, and the second terminal corresponding to the device is SL positioned. Auxiliary terminal or anchor terminal;

The first sending module 1002 is configured to send an SL positioning reference signal based on the target SL positioning reference signal configuration.

Optionally, the first receiving module 1001 is used for:

Receive the indication message from the radio access network device, wherein the indication message includes at least one of the following:

Optionally, the device also includes:

The second receiving module is configured to receive a configuration message from a wireless access network device, where the configuration message includes N sets of SL positioning reference signal configurations, and the target SL positioning reference signal configuration is the N sets of SL positioning reference signal configurations. In the configuration, N is a positive integer.

The optional configuration message also includes at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

The optional transmission resources corresponding to the transmission resource information include at least one of the following:

Optionally, the first receiving module 1001 is used for:

Receive the first message broadcast by the first terminal on the PC5 interface, wherein the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference signal configuration , or the SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.

Optionally, the device also includes:

The second sending module is configured to send a broadcast message. The broadcast message includes: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes the N sets of side links. SL positioning reference signal configuration.

Optionally, the broadcast message also includes at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

The location information of the second terminal;

Optionally, the second terminal is preset with at least one of the following:

The SL layer 2 identifier corresponding to the SL positioning service;

The SL positioning reference signal configuration of the second terminal;

The side link positioning device provided by the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 3 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Please refer to Figure 11. Figure 11 is a structural diagram of an information sending device provided by an embodiment of the present application. As shown in Figure 11, it includes:

The first sending module 1101 is used to send a system information message, where the system information message includes side link SL positioning reference signal configurations of M terminals;

Wherein, M is a positive integer, the M terminals include a second terminal, and the SL of the second terminal The positioning reference signal configuration includes N sets of SL positioning reference signal configurations, the second terminal is an auxiliary terminal or an anchor terminal for SL positioning, and N is a positive integer.

Information about the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The location information of the M terminals;

Identification information of the M terminals.

Optionally, the device also includes:

A first receiving module, configured to receive a first message sent by a first terminal, where the first terminal is a target terminal for SL positioning, and the first message is used to request activation: sending a target SL positioning reference signal configuration corresponding to SL positioning reference signal.

Optionally, the first message includes at least one of the following:

The identification information of the second terminal;

Optionally, the device also includes:

The second sending module is configured to send an instruction message to the second terminal, where the instruction message is used to request activation: sending the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration.

Optionally, the indication message includes at least one of the following:

Optionally, the device also includes:

The third sending module is configured to send a configuration message to the second terminal, where the configuration message is used to configure N sets of SL positioning reference signal configurations, where N is a positive integer.

The SL layer 2 identifier associated with the SL positioning service;

Optionally, the device also includes:

The second receiving module is used to receive the auxiliary message sent by the positioning server, where the auxiliary message includes:

Information about the M terminals;

SL positioning reference signal configuration of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The above information sending device can improve the positioning performance of the terminal.

The information sending device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a radio access network device.

The information sending device provided by the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 4 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 12, this embodiment of the present application also provides a communication device 1200, which includes a processor 1201 and a memory 1202. The memory 1202 stores programs or instructions that can be run on the processor 1201, such as , when the communication device 1200 is a terminal, when the program or instruction is executed by the processor 1201, each step of the side link positioning method embodiment on the first terminal side is implemented, and the same technical effect can be achieved. When the communication device 1200 is a second terminal, when the program or instruction is executed by the processor 1201, each step of the side link positioning method embodiment on the second terminal side is implemented, and the same technical effect can be achieved. When the communication device 1200 is a wireless access network device, when the program or instruction is executed by the processor 1201, each step of the above information sending method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.

An embodiment of the present application also provides a terminal, including a processor and a communication interface. When the terminal is a first terminal, the communication interface is used to obtain N sets of side link SL positioning reference signal configurations of the second terminal. , wherein the first terminal is a target terminal for SL positioning, the second terminal is an auxiliary terminal or anchor terminal for SL positioning, and N is a positive integer; the processor or communication interface is used to perform positioning on the N sets of SL In the reference signal configuration, the target SL positioning reference signal configuration is determined; the communication interface is also used to send a first message, the first message is used to request activation: send the SL positioning reference signal corresponding to the target SL positioning reference signal configuration; based on The target SL positioning reference signal is configured to perform SL positioning reference signal measurement. When the terminal is a second terminal, the communication interface is used to receive an instruction message, and the instruction message is used to request activation: sending the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration, the The second terminal corresponding to the device is an auxiliary terminal or an anchor terminal for SL positioning; based on the target SL positioning reference signal configuration, the SL positioning reference signal is sent. This terminal embodiment corresponds to the above-mentioned first terminal and second terminal-side method embodiments. Each implementation process and implementation manner of the above-mentioned method embodiments can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 13 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 1300 includes but is not limited to: a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, a processor 1310, etc. At least some parts.

Those skilled in the art can understand that the terminal 1300 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 1310 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 13 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 1304 may include a graphics processing unit (Graphics Processing Unit, GPU) 13041 and a microphone 13042. The graphics processing unit 13041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 1306 may include a display panel 13061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072 . Touch panel 13071, also called touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. Other input devices 13072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1301 can transmit it to the processor 1310 for processing; in addition, the radio frequency unit 1301 can send uplink data to the network side device. Generally, the radio frequency unit 1301 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 1309 may be used to store software programs or instructions as well as various data. The memory 1309 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 1309 may include volatile memory or nonvolatile memory, or memory 1309 may include both volatile and nonvolatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 1309 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, the processor 1310 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1310.

Wherein, when the above terminal is the first terminal:

The radio frequency unit 1301 or the processor 1310 is used to obtain the N sets of side link SL positioning reference signal configurations of the second terminal, where the first terminal is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning. Terminal or anchor terminal, N is a positive integer;

The radio frequency unit 1301 or the processor 1310 is configured to determine the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

The radio frequency unit 1301 is also used to send a first message, the first message is used to request activation: send the SL positioning reference signal corresponding to the target SL positioning reference signal configuration; and perform SL based on the target SL positioning reference signal configuration. Positioning reference signal measurements.

Optionally, the obtaining of N sets of side link SL positioning reference signal configurations of the second terminal includes:

Receive a system information message from a wireless access network device, where the system information message includes: SL positioning reference signal configurations of M terminals;

Information about the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The location information of the M terminals;

Identification information of the M terminals.

Optionally, the broadcast message also includes at least one of the following:

The location information of the second terminal;

The SL layer 2 identifier associated with the SL positioning service;

Optionally, sending the first message includes:

The identification information of the second terminal;

Optionally, sending the first message includes:

The first terminal broadcasts the first message on the PC5 interface, where the SL of the first message The layer 2 identifier corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference signal configuration, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference signal configuration. QoS.

Among them, when the above-mentioned terminal is the first terminal:

Radio frequency unit 1301, used for the second terminal to receive an instruction message, the instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration, and the second terminal is an auxiliary terminal for SL positioning. or an anchor terminal; and based on the target SL positioning reference signal configuration, transmit the SL positioning reference signal.

Optionally, the reception indication message includes:

Optionally, before the second terminal receives the indication message, the radio frequency unit 1301 is also used to:

Receive a configuration message from the radio access network device, the configuration message includes N sets of SL positioning reference signal configurations, the target SL positioning reference signal configuration is a configuration in the N sets of SL positioning reference signal configurations, and N is a positive integer.

The SL layer 2 identifier associated with the SL positioning service;

Wherein, the first configuration authorization type resource is: the second terminal can directly send SL positioning Reference signal transmission resources;

Optionally, the reception indication message includes:

Optionally, before receiving the first message broadcast by the first terminal on the PC5 interface, the radio frequency unit 1301 is also used to:

Send a broadcast message, where the broadcast message includes: the SL positioning reference signal configuration of the second terminal, where the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning reference signal configurations.

Optionally, the broadcast message also includes at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

The location information of the second terminal;

Optionally, the second terminal is preset with at least one of the following:

The SL layer 2 identifier corresponding to the SL positioning service;

The SL positioning reference signal configuration of the second terminal;

The above terminal can improve the positioning performance of the terminal.

An embodiment of the present application also provides a wireless access network device, including a processor and a communication interface, wherein the communication interface is used to send a system information message, and the system information message includes side link SL positioning references of M terminals Signal configuration; where M is a positive integer, the M terminals include a second terminal, the SL positioning reference signal configuration of the second terminal includes N sets of SL positioning reference signal configurations, and the second terminal is an auxiliary to SL positioning Terminal or anchor terminal, N is a positive integer. This radio access network equipment embodiment corresponds to the above radio access network equipment side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this radio access network equipment embodiment, and can achieve the same technical effects.

Specifically, embodiments of the present application also provide a radio access network device. As shown in Figure 14, the radio access network equipment 1400 includes: an antenna 1401, a radio frequency device 1402, a baseband device 1403, a processor 1404 and a memory 1405. Antenna 1401 is connected to radio frequency device 1402. In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401 and sends the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402. The radio frequency device 1402 processes the received information and then sends it out through the antenna 1401.

The method performed by the radio access network device in the above embodiment can be implemented in the baseband device 1403, which includes a baseband processor.

The baseband device 1403 may include, for example, at least one baseband board, which is provided with multiple chips, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The wireless access network device may also include a network interface 1406, which is, for example, a common public radio interface (CPRI).

Specifically, the radio access network device 1400 in this embodiment of the present invention also includes: instructions or programs stored in the memory 1405 and executable on the processor 1404. The processor 1404 calls the instructions or programs in the memory 1405 to execute the steps shown in Figure 9 It shows the execution method of each module and achieves the same technical effect. To avoid duplication, it will not be repeated here.

The radio frequency device 1402 is configured to send a system information message, where the system information message includes side link SL positioning reference signal configurations of M terminals;

Information about the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The location information of the M terminals;

Identification information of the M terminals.

Optionally, the radio frequency device 1402 is also used for:

The first message of the radio frequency device 1402 includes at least one of the following:

The identification information of the second terminal;

Optionally, the radio frequency device 1402 is also used for:

Optionally, the indication message includes at least one of the following:

Optionally, before the radio access network device sends the system information message, the radio frequency device 1402 is also used to:

The SL layer 2 identifier associated with the SL positioning service;

Optionally, the radio frequency device 1402 is also used for:

Receive auxiliary messages sent by the positioning server. The auxiliary messages include:

Information about the M terminals;

SL positioning reference signal configuration of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The above wireless access network equipment can improve the positioning performance of the terminal.

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the side link positioning method or information provided by the embodiments of the present application is implemented. The steps of the sending method.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above side link positioning method or Each process of the embodiment of the information sending method can achieve the same technical effect. To avoid duplication, it will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above side link positioning method. Or each process of the embodiment of the information sending method, and can achieve the same technical effect, so to avoid repetition, they will not be described again here.

Embodiments of the present application also provide a side link positioning system, including: a first terminal, a second terminal and a wireless access network device. The terminal can be used to perform the side link positioning method as described in the first aspect. The second terminal may be configured to perform the steps of the side link positioning method described in the second aspect, and the radio access network device may be configured to perform the steps of the information sending method described in the third aspect.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that this application The scope of the methods and apparatuses in the embodiments is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in a reverse order depending on the function involved. For example, the functions may be performed in different The described methods are performed in the order described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A side link positioning method, including:

The first terminal acquires N sets of side link SL positioning reference signal configurations of the second terminal, where the first terminal is a target terminal for SL positioning, and the second terminal is an auxiliary terminal or anchor terminal for SL positioning, N is a positive integer;

The first terminal determines the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

The first terminal sends a first message, the first message is used to request activation: sending an SL positioning reference signal corresponding to the target SL positioning reference signal configuration;

The first terminal performs SL positioning reference signal measurement based on the target SL positioning reference signal configuration.
The method of claim 1, wherein the first terminal obtains N sets of side link SL positioning reference signal configurations of the second terminal, including:

The first terminal receives a system information message from a wireless access network device, where the system information message includes: SL positioning reference signal configurations of M terminals;

Wherein, M is a positive integer, the M terminals include the second terminal, and the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning reference signal configurations.
The method of claim 2, wherein the system information message further includes at least one of the following:

Information about the M terminals;

Transmission resource information associated with the SL positioning reference signal configuration of the M terminals;

The positioning service quality QoS information corresponding to the SL positioning reference signal configuration of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The target SL positioning reference signal is configured with an associated SL layer 2 identifier.
The method of claim 3, wherein the information of the M terminals includes at least one of the following:

The location information of the M terminals;

Identification information of the M terminals.
The method of claim 4, wherein the identification information of the M terminals includes SL layer 2 identifications of the M terminals.
The method according to any one of claims 2 to 5, wherein the system information message includes a system information block, a positioning system information block, or an SL positioning system information block.
The method of claim 1, wherein the first terminal obtains N sets of side link SL positioning reference signal configurations of the second terminal, including:

The first terminal receives a broadcast message from a second terminal device, the broadcast message includes: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes the N sets of side link SL positioning reference signal configurations.
The method of claim 7, wherein the broadcast message further includes at least one of the following:

The location information of the second terminal;

Transmission resource information associated with the SL positioning reference signal configuration of the second terminal;

QoS information configured by the SL positioning reference signal of the second terminal;

The SL layer 2 identifier associated with the SL positioning service;

The target SL positioning reference signal is configured with an associated SL layer 2 identifier.
The method of claim 1, wherein the first terminal sending the first message includes:

The first terminal sends the first message to the radio access network device, where the first message includes at least one of the following:

The identification information of the second terminal;

The identification information of the target SL positioning reference signal configuration;

QoS information, the QoS information matches the target SL positioning reference signal configuration.
The method of claim 1, wherein the first terminal sending the first message includes:

The first terminal broadcasts the first message on the PC5 interface, wherein the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target SL positioning reference. The signal configuration, or the SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.
The method according to claim 10, wherein when the SL layer 2 identifier of the first message corresponds to the SL positioning service, the identification information of the first terminal is preset or specified by the protocol.
A side link positioning method, including:

The second terminal receives an instruction message, the instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration, and the second terminal is an auxiliary terminal or anchor terminal for SL positioning;

The second terminal sends an SL positioning reference signal based on the target SL positioning reference signal configuration.
The method of claim 12, wherein the second terminal receives an indication message, including:

The second terminal receives the instruction message from the radio access network device, where the instruction message includes at least one of the following:

The identification information of the target SL positioning reference signal configuration;

The target SL positioning reference signal configures associated transmission resources.
The method of claim 12, wherein before the second terminal receives the indication message, the method further includes:

The second terminal receives a configuration message from the wireless access network device, the configuration message includes N sets of SL positioning reference signal configurations, and the target SL positioning reference signal configuration is one of the N sets of SL positioning reference signal configurations. Configuration, N is a positive integer.
The method of claim 14, wherein the configuration message further includes at least one of the following:

Transmission resource information associated with the N sets of SL positioning reference signal configurations;

The activation status of the N sets of SL positioning reference signal configurations;

The activation status of the transmission resources associated with the N sets of SL positioning reference signal configurations;

The SL layer 2 identifier associated with the SL positioning service;

The target SL positioning reference signal is configured with an associated SL layer 2 identifier.
The method of claim 15, wherein the transmission resources corresponding to the transmission resource information include at least one of the following:

The first configuration authorization type resources, the second configuration authorization type resources, dynamic scheduling resources and autonomous selection resources;

Wherein, the first configuration authorization type resource is: the second terminal can directly send SL positioning Reference signal transmission resources;

The second configuration authorization type resource is: a transmission resource for the second terminal to send an SL positioning reference signal based on an activation command;

The dynamic scheduling resources are resources dynamically scheduled by the radio access network device for sending SL positioning reference signals;

The autonomously selected resource is a resource selected by the second terminal through perception for sending the SL positioning reference signal.
The method of claim 12, wherein the second terminal receives an indication message, including:

The second terminal receives the first message broadcast by the first terminal on the PC5 interface, wherein the SL layer 2 identifier of the first message corresponds to the SL positioning service, or the SL layer 2 identifier of the first message corresponds to the target The SL positioning reference signal configuration, or the SL layer 2 identifier of the first message corresponds to the QoS corresponding to the target SL positioning reference signal configuration.
The method of claim 17, wherein the first message further includes identification information of the target SL positioning reference signal configuration.
The method of claim 17 or 18, wherein before the second terminal receives the first message broadcast by the first terminal on the PC5 interface, the method further includes:

The second terminal sends a broadcast message, the broadcast message includes: the SL positioning reference signal configuration of the second terminal, wherein the SL positioning reference signal configuration of the second terminal includes N sets of side link SL positioning reference signals. configuration.
The method of claim 19, wherein the broadcast message further includes at least one of the following:

The SL layer 2 identifier associated with the SL positioning service;

The location information of the second terminal;

Transmission resource information associated with the SL positioning reference signal of the second terminal;

QoS information configured by the SL positioning reference signal of the second terminal;

The target SL positioning reference signal is configured with an associated SL layer 2 identifier.
The method according to claim 17 or 18, wherein the second terminal is preset with at least one of the following:

The SL layer 2 identifier corresponding to the SL positioning service;

The SL positioning reference signal configuration of the second terminal;

Transmission resource information associated with the SL positioning reference signal of the second terminal;

QoS information configured by the SL positioning reference signal of the second terminal.
A method of sending information, including:

The wireless access network device sends a system information message, where the system information message includes side link SL positioning reference signal configurations of the M terminals;

Wherein, M is a positive integer, the M terminals include a second terminal, the SL positioning reference signal configuration of the second terminal includes N sets of SL positioning reference signal configurations, and the second terminal is an auxiliary terminal or anchor for SL positioning. Point terminal, N is a positive integer.
The method of claim 22, wherein the system information message further includes at least one of the following:

Information about the M terminals;

Transmission resource information associated with the SL positioning reference signals of the M terminals;

Positioning QoS information configured by the SL positioning reference signals of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The SL layer 2 identifier associated with the target SL positioning reference signal configuration.
The method of claim 23, wherein the information of the M terminals includes at least one of the following:

The location information of the M terminals;

Identification information of the M terminals.
The method of claim 24, wherein the identification information of the M terminals includes SL layer 2 identifications of the M terminals.
The method according to any one of claims 22 to 25, wherein the system information message includes a system information block, a positioning system information block, or an SL positioning system information block.
The method of any one of claims 22 to 25, wherein the method further comprises:

The radio access network device receives a first message sent by a first terminal, where the first terminal is a target terminal for SL positioning, and the first message is used to request activation: sending a target SL positioning reference signal configuration corresponding to SL positioning reference signal.
The method of claim 27, wherein the first message includes at least one of the following:

The identification information of the second terminal;

The identification information of the target SL positioning reference signal configuration;

Quality of service QoS information, the QoS information matches the target SL positioning reference signal configuration.
The method of claim 27, wherein the method further includes:

The radio access network device sends an instruction message to the second terminal, where the instruction message is used to request activation: sending the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration.
The method of claim 29, wherein the indication message includes at least one of the following:

The identification information of the target SL positioning reference signal configuration;

The target SL positioning reference signal configures associated transmission resources.
The method according to any one of claims 22 to 25, wherein before the radio access network device sends the system information message, the method further includes:

The radio access network device sends a configuration message to the second terminal, where the configuration message is used to configure N sets of SL positioning reference signal configurations, where N is a positive integer.
The method of claim 31, wherein the configuration message is further configured to include at least one of the following:

Transmission resource information associated with the N sets of SL positioning reference signal configurations;

The activation status of the N sets of SL positioning reference signal configurations;

The activation status of the transmission resources associated with the N sets of SL positioning reference signal configurations;

The SL layer 2 identifier associated with the SL positioning service;

The SL layer 2 identifier associated with the target SL positioning reference signal configuration.
The method of claim 32, wherein the transmission resources corresponding to the transmission resource information include at least one of the following:

The first configuration authorization type resources, the second configuration authorization type resources, dynamic scheduling resources and autonomous selection resources;

Wherein, the first configuration authorization type resource is: a transmission resource that the second terminal can directly send the SL positioning reference signal;

The second configuration authorization type resource is: a transmission resource for the second terminal to send an SL positioning reference signal based on an activation command;

The dynamic scheduling resources are resources dynamically scheduled by the radio access network device for sending SL positioning reference signals;

The autonomously selected resource is a resource selected by the second terminal through perception for sending the SL positioning reference signal.
The method according to any one of claims 22 to 25, further comprising:

The wireless access network device receives an auxiliary message sent by the positioning server, where the auxiliary message includes:

Information about the M terminals;

SL positioning reference signal configuration of the M terminals;

Transmission resource information associated with the SL positioning reference signals of the M terminals;

The corresponding positioning service quality QoS information configured by the SL positioning reference signals of the M terminals;

The SL layer 2 identifier associated with the SL positioning service;

The SL layer 2 identifier associated with the target SL positioning reference signal configuration.
A side link positioning device, including:

An acquisition module configured to acquire N sets of side link SL positioning reference signal configurations of a second terminal, where the first terminal corresponding to the device is a target terminal for SL positioning, and the second terminal is an auxiliary terminal for SL positioning or Anchor terminal, N is a positive integer;

A determination module, configured to determine the target SL positioning reference signal configuration among the N sets of SL positioning reference signal configurations;

A first sending module, configured to send a first message, where the first message is used to request activation: sending the SL positioning reference signal corresponding to the target SL positioning reference signal configuration;

An execution module, configured to perform SL positioning reference signal measurement based on the target SL positioning reference signal configuration.
A side link positioning device, including:

The first receiving module is used to receive an instruction message. The instruction message is used to request activation: send the SL positioning reference signal corresponding to the target side link SL positioning reference signal configuration. The second terminal corresponding to the device is an auxiliary device for SL positioning. terminal or anchor terminal;

The first sending module is configured to send the SL positioning reference signal based on the target SL positioning reference signal configuration.
An information sending device including:

A first sending module, configured to send a system information message, where the system information message includes side link SL positioning reference signal configurations of M terminals;

Wherein, M is a positive integer, the M terminals include a second terminal, the SL positioning reference signal configuration of the second terminal includes N sets of SL positioning reference signal configurations, and the second terminal is an auxiliary terminal or anchor for SL positioning. Point terminal, N is a positive integer.
A terminal, the terminal being a first terminal, including a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and the programs or instructions are implemented when executed by the processor The steps of the side link positioning method according to any one of claims 1 to 11.
A terminal, the terminal being a second terminal, including a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and the programs or instructions are implemented when executed by the processor The steps of the side link positioning method according to any one of claims 12 to 21.
A radio access network device, including a processor and a memory, wherein the memory stores a program or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the implementation as claimed in claim 22 Go to the steps of the information sending method described in any one of 34.
A readable storage medium on which a program or instructions are stored, wherein when the program or instructions are executed by a processor, the side link positioning method according to any one of claims 1 to 11 is implemented. Steps, or when the program or instructions are executed by the processor, the steps of the side link positioning method as claimed in any one of claims 12 to 21 are implemented, or when the program or instructions are executed by the processor, the steps of the side link positioning method as claimed in any one of claims 12 to 21 are implemented. The steps of the information sending method described in any one of claims 22 to 34.