Method, device, equipment and system for determining SL-PRS sending parameters and storage medium

Abstract

The invention discloses a method, device, equipment and system for determining SL-PRS sending parameters and a storage medium, and belongs to the technical field of communication, and the method for determining the SL-PRS sending parameters in the embodiment of the invention comprises the steps that first communication equipment obtains a positioning request, the positioning request comprises at least one of the following items: a positioning QoS requirement, an identifier of the first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first communication device sends first information to the first terminal according to the positioning request, the first information comprising at least one of the following items: a first SL-PRS time-frequency resource demand, a first SL-PRS sending priority, a first BWP identifier, and a first SL resource pool identifier; the first information is used for determining a sending parameter of the SL-PRS.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a method, device, equipment, system and storage medium for determining SL-PRS transmission parameters. Background Art

[0002] In the New Radio (NR) system, during the selection or reselection of sidelink (SL) transmission resources, the terminal can determine the SL transmission parameters, such as the number of hybrid automatic repeat request (HARQ) retransmissions, frequency domain resources and modulation and coding scheme (MCS), according to the channel occupancy, such as the channel busy rate (CBR).

[0003] However, for the Sidelink-Positioning Reference Signal (SL-PRS), there is currently no solution for how the terminal determines the transmission parameters of the SL-PRS to achieve SL positioning when triggering the SL-PRS resource selection / reselection process. Summary of the invention

[0004] The embodiments of the present application provide a method, apparatus, device, system and storage medium for determining SL-PRS transmission parameters, which can solve the problem of how to determine the transmission parameters of SL-PRS to achieve SL positioning.

[0005] In a first aspect, a method for determining SL-PRS sending parameters is provided, the method comprising: a first communication device obtains a positioning request, the positioning request comprising at least one of the following: a positioning service quality (Quality of Service, QoS) requirement, an identifier of a first terminal, an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first communication device sends first information to the first terminal according to the positioning request, the first information comprising at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first bandwidth part (Bandwidth Part, BWP) identifier, a first SL resource pool identifier; the first information is used to determine the SL-PRS sending parameters.

[0006] In a second aspect, a method for determining SL-PRS sending parameters is provided, the method comprising: a first terminal receives first information sent by a first communication device; wherein the first information is determined according to a positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, an identifier of the first terminal, an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first BWP identifier, a first SL resource pool identifier; the first terminal determines the SL-PRS sending parameters according to the first information.

[0007] According to a third aspect, a device for determining SL-PRS transmission parameters is provided, and the device includes: an acquisition module and a sending module. The acquisition module is used to obtain a positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning. The sending module is used to send first information to the first terminal according to the positioning request obtained by the acquisition module, and the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier; the first information is used to determine the transmission parameters of the SL-PRS.

[0008] In a fourth aspect, a device for determining SL-PRS transmission parameters is provided, the device comprising: a receiving module and a determining module. The receiving module is used to receive first information sent by a first communication device; wherein the first information is determined according to a positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, an identifier of a first terminal, an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier. The determining module is used to determine the transmission parameters of the SL-PRS according to the first information received by the receiving module.

[0009] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0010] In a sixth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the processor is used to obtain a positioning request, the positioning request including at least one of the following: positioning QoS requirements, an identifier of a first terminal, an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning. The communication interface is used to send first information to the first terminal according to the positioning request, the first information including at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier; the first information is used to determine the transmission parameters of the SL-PRS.

[0011] In a seventh aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0012] In an eighth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first information sent by a first communication device; wherein the first information is determined according to a positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, an identifier of the first terminal, an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier. The processor is used to determine the transmission parameters of the SL-PRS according to the first information.

[0013] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0014] In the tenth aspect, a wireless communication system is provided, comprising: a communication device and a terminal, wherein the communication device can be used to execute the steps of the method described in the first aspect, and the terminal can be used to execute the steps of the method described in the second aspect.

[0015] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0016] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method for determining the SL-PRS transmission parameters as described in the first aspect, or to implement the steps of the method for determining the SL-PRS transmission parameters as described in the second aspect.

[0017] In an embodiment of the present application, the first communication device may obtain a positioning request, the positioning request including at least one of the positioning QoS requirements, the identifier of the first terminal, and the identifier of the service or resident cell of the first terminal, and according to the positioning request, send first information for determining the transmission parameters of the SL-PRS to the first terminal, the first information including at least one of the following: the first SL-PRS time-frequency resource requirement, the first SL-PRS transmission priority, the first BWP identifier, and the first SL resource pool identifier. Through this solution, the first communication device can configure the resource information for determining the transmission parameters of the SL-PRS to the first terminal according to the obtained positioning request of the terminal to be located, so that the transmission parameters of the SL-PRS determined by the first terminal can meet the positioning QoS requirements, improve the transmission effectiveness of the SL-PRS, and improve the efficiency of the SL positioning of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0019] Figure 2 It is one of the flowcharts of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0020] Figure 3 This is a second flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0021] Figure 4 This is a flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0022] Figure 5 This is a fourth flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0023] Figure 6 This is a flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0024] Figure 7 This is a flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0025] Figure 8 This is the seventh flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0026] Fig. 9 This is a flowchart of an SL-PRS transmission parameter determination method provided in an embodiment of the present application;

[0027] Fig.10 This is a ninth flowchart of a method for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0028] Fig.11 This is one of the structural schematic diagrams of a device for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0029] Fig.12 This is a second structural diagram of a device for determining SL-PRS transmission parameters provided in an embodiment of the present application;

[0030] Fig.13 It is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0031] Fig.14 It is a schematic diagram of the hardware structure of a network side device provided in an embodiment of the present application;

[0032] Fig.15 It is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0034] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0036] The terms "at least one (item)", "at least one of" and the like in this application refer to any one, any two or a combination of more than two of the objects included therein. For example, at least one (item) of a, b, and c can be represented by: "a", "b", "c", "a and b", "a and c", "b and c" and "a, b and c", where a, b, and c can be single or multiple. Similarly, "at least two (items)" refers to two or more, and its meaning is similar to that of "at least one (item)".

[0037] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0038] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0039] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), Location Management Function (LMF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0040] The following is an explanation of some concepts and / or terms involved in a method, apparatus, device, system and storage medium for determining SL-PRS transmission parameters provided in an embodiment of the present application.

[0041] 1. NR SL resource allocation method

[0042] NR SL supports two SL resource allocation modes: one is mode 1 (mode1), that is, the base station schedules SL resources; the other is mode 2 (mode2), that is, the terminal selects SL resources from the resource pool. The information of the resource pool can come from the base station's dedicated signaling message, broadcast message or pre-configured information.

[0043] If the terminal is in a Radio Resource Control (RRC) connected state, the SL resource allocation mode can be mode1 or mode2; if the terminal is within the network coverage but in a non-RRC connected state, or the terminal is outside the network coverage, the SL resource allocation mode can only be mode2.

[0044] For mode 2, during the SL resource selection process, the specific process of terminal layer interaction is as follows:

[0045] 1) The RRC layer of the transmitting (TX) terminal receives the SL configuration and sends the relevant parameters to the Media Access Control (MAC) layer and the Physical (PHY) layer;

[0046] 2) After receiving the SL data transmission request, the MAC layer selects the SL grant;

[0047] 3) The MAC layer selects the appropriate resource pool for SL data;

[0048] 4) The MAC layer performs transmission resource selection / reselection decision;

[0049] 5) If resource selection / reselection is triggered, MAC determines SL transmission parameters, such as the number of HARQ retransmissions and frequency domain resources, and triggers the PHY layer to determine a set of candidate resources; otherwise, reuse the previously selected / reserved SL grant and jump to step 8;

[0050] 6) The PHY layer determines the resource selection window and sensing window according to the instructions of the RRC layer and the MAC layer, and determines the candidate resource set according to the reference signal receiving power (RSRP) threshold and channel occupancy ratio (CR) limit, and feeds back to the MAC layer;

[0051] 7) The MAC layer randomly selects a transmission resource from the candidate resource set;

[0052] 8) The MAC layer determines the time domain parameters of the Physical Sidelink Control Channel (PSCCH) and the Physical Sidelink Shared Channel (PSSCH);

[0053] 9) The MAC layer determines the PSSCH transmission parameters, such as MCS and HARQ process identifier.

[0054] 2. SL channel busy rate (CBR)

[0055] SL CBR is the number of sub-channels whose SL received signal strength indicator (RSSI) is greater than the configured or pre-configured threshold value measured by the UE in slot n within the CBR measurement window [na, n-1], divided by the total number of sub-channels in the range [na, n-1]. Where a = 100 or 100·2 μ slots, which can be configured through RRC, and μ is a parameter associated with the subcarrier spacing.

[0056] If the network is configured with a mapping relationship between the CBR range and the optional range of SL PSSCH transmission parameters, the terminal MAC layer needs to determine the SL PSSCH transmission parameters based on the CBR measurement value; if the CBR measurement value cannot be obtained, the SL PSSCH transmission parameters are determined based on the default optional range of SL PSSCH transmission parameters.

[0057] 3. SL channel occupancy rate (CR)

[0058] SL CR is: the value evaluated by the terminal PHY layer in slot n, which is the sum of the number of subchannels that the terminal has transmitted in the range of slots [na, n-1] + the number of subchannels that the terminal has reserved / indicated in the range of slots [n, n+b], divided by the total number of subchannels in the range [na, n+b].

[0059] The terminal PHY layer sends PSSCH in slot n. The terminal needs to ensure that the ∑ i≥k CR(i)≤CR Limi ( t k). CR(i) refers to the CR of the PSSCH with priority i evaluated in slot nN. Limit (k) is the SL CR limit threshold value of the priority k configured by the high layer, and N is the congestion control processing time.

[0060] The following, in combination with the accompanying drawings, describes in detail the method for determining the SL-PRS sending parameters provided in the embodiments of the present application through some embodiments and their application scenarios.

[0061] Currently, there is no solution for how the terminal determines the transmission parameters of the SL-PRS to achieve SL positioning when triggering the SL-PRS resource selection / reselection process.

[0062] In order to solve the above problems, an embodiment of the present application provides a method for determining SL-PRS transmission parameters, wherein a first communication device may obtain a positioning request, wherein the positioning request includes at least one of positioning QoS requirements, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal, and according to the positioning request, a first information for determining the transmission parameters of the SL-PRS is sent to the first terminal, wherein the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier. Through this solution, the first communication device may configure resource information for determining the transmission parameters of the SL-PRS to the first terminal according to the obtained positioning request of the terminal to be located, so that the transmission parameters of the SL-PRS determined by the first terminal can meet the positioning QoS requirements, improve the transmission effectiveness of the SL-PRS, and improve the efficiency of the SL positioning of the terminal.

[0063] The embodiment of the present application provides a method for determining SL-PRS transmission parameters. Figure 2 FIG. 1 is a flow chart showing a method for determining SL-PRS transmission parameters provided in an embodiment of the present application. Figure 2 As shown, the method for determining the SL-PRS transmission parameters provided in the embodiment of the present application may include the following steps 201 to 204.

[0064] Step 201: A first communication device obtains a positioning request.

[0065] In the embodiment of the present application, the positioning request includes at least one of the following: positioning QoS requirement, an identifier of the first terminal, and an identifier of a service or resident cell of the first terminal. The first terminal is a terminal related to SL positioning.

[0066] In the embodiment of the present application, the above SL positioning is based on the positioning of the terminal and the terminal, including absolute positioning, relative positioning, and ranging. Among them, absolute positioning is to determine the absolute coordinates of the terminal, relative positioning is to determine the coordinates of the terminal relative to a reference point, and ranging is to determine at least one of the distance and angle of the terminal relative to a reference point.

[0067] Optionally, in an embodiment of the present application, the first communication device may be a LMF network element or a positioning service terminal.

[0068] It should be noted that the first communication device may be one or more network elements in the core network device. In one embodiment of the present application, the first communication device is described as an LMF network element in the core network device.

[0069] The above-mentioned positioning service terminal (positioning server UE) refers to a service terminal participating in SL positioning and has the capability of location management.

[0070] Optionally, in the embodiment of the present application, the above-mentioned first terminal may include at least one of the following: a second terminal that needs to be located, and a third terminal with a known position.

[0071] It should be noted that the second terminal that needs to be located may be referred to as a target UE, and the third terminal with a known location may be referred to as an Anchor UE.

[0072] Optionally, in an embodiment of the present application, the known position may be an absolute position, that is, the absolute coordinates of the third terminal; or the known position may be a relative position, that is, the coordinates of the third terminal relative to a reference point.

[0073] In the embodiment of the present application, the above positioning request is a positioning request of the second terminal that needs to be located. The manner in which the first communication device obtains the positioning request includes the following situations:

[0074] Case 1: When the first communication device is a positioning service terminal, if the second terminal (Target UE) to be located is a positioning service terminal, then the first communication device obtains the positioning request, that is, the Target UE obtains its own positioning request, without interacting with other terminals to obtain the positioning request.

[0075] Case 2: The first communication device obtains a positioning request from the Target UE. Exemplarily, the above step 201 can be implemented through the following step 201a.

[0076] Step 201a: The first communication device receives a positioning request sent by a second terminal that needs to be positioned.

[0077] It can be understood that in one case, when the above-mentioned first communication device is a positioning service terminal, if the above-mentioned second terminal (Target UE) that needs to be located is not a positioning service terminal, then the first communication device obtains the positioning request, that is, the positioning service terminal obtains the positioning request from the Target UE.

[0078] In another case, when the above-mentioned first communication device is a LMF network element, the first communication device obtains the positioning request, that is, the LMF network element obtains the positioning request from the Target UE.

[0079] Optionally, in an embodiment of the present application, when the first communication device is an LMF network element, the second terminal may send a positioning request to the first communication device through the AMF network element.

[0080] Optionally, in an embodiment of the present application, the above-mentioned positioning QoS requirement includes at least one of the following: positioning accuracy requirement and latency requirement.

[0081] In the embodiment of the present application, the identifier of the first terminal is used to uniquely identify the first terminal.

[0082] Step 202: The first communication device sends first information to the first terminal according to the positioning request.

[0083] Step 203: The first terminal receives first information sent by the first communication device.

[0084] In an embodiment of the present application, the first information is determined according to the positioning request. The first information is used to determine the transmission parameters of the SL-PRS. The first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier.

[0085] It should be noted that the SL-PRS time-frequency resource requirement refers to the time-frequency resources required for sending the SL-PRS, and the SL-PRS time-frequency resource requirement is a parameter that characterizes the transmission performance of the SL-PRS (SL-PRS transmission characteristics). The SL-PRS time-frequency resource requirement can be a specific value or a value range.

[0086] Optionally, in an embodiment of the present application, the SL-PRS time-frequency resource requirement includes at least one of the following: SL-PRS period, SL-PRS bandwidth, SL-PRS comb structure size (comb size), number of SL-PRS repeated transmissions, and the number of symbols occupied by SL-PRS in each time slot.

[0087] It should be noted that the above-mentioned SL-PRS time-frequency resource requirement may be the above-mentioned first SL-PRS time-frequency resource requirement, or may be the second SL-PRS time-frequency resource requirement or the third SL-PRS time-frequency resource requirement in the following embodiments.

[0088] Optionally, in an embodiment of the present application, the above-mentioned SL-PRS bandwidth may include at least one of the following: sub-channel, resource block (Resource Block, RB), physical resource block (Physical Resource Block, PRB), and BWP.

[0089] Optionally, in an embodiment of the present application, the above step 202 can be specifically implemented by the following step 301, and the above step 203 can be specifically implemented by the following step 302.

[0090] Step 301: The first communication device sends a fourth request to the first terminal according to the positioning request.

[0091] In an embodiment of the present application, the fourth request is used to request sending SL-PRS, and the fourth request includes the first information.

[0092] Step 302: The first terminal receives a fourth request sent by the first communication device.

[0093] Optionally, in the embodiment of the present application, the fourth request may be a Sidelink Positioning Protocol (SLPP) message.

[0094] Optionally, in one implementation of the embodiment of the present application, in combination Figure 2 ,like Figure 3 As shown, the above step 202 can be specifically implemented through the following steps 202a to 202f.

[0095] Step 202a: The first communication device determines second information according to the positioning request.

[0096] In an embodiment of the present application, the above-mentioned second information includes at least one of the following: SL-PRS resource pool type requirement, and second SL-PRS time-frequency resource requirement.

[0097] Optionally, in an embodiment of the present application, the above-mentioned SL-PRS resource pool type requirement includes any one of the following: the network schedules the resources for sending SL-PRS, and the terminal autonomously selects the resources for sending SL-PRS.

[0098] For example, for positioning requirements with low latency requirements, mode 1 is selected, that is, the network schedules resources for sending SL-PRS.

[0099] Optionally, in an embodiment of the present application, if the positioning request indicates to adopt SL positioning, or the first communication device decides to adopt SL positioning, the first communication device determines the second information based on the positioning request.

[0100] Step 202b: The first communication device sends a first request to the second communication device.

[0101] In an embodiment of the present application, the first request is used to request to configure a SL-PRS resource pool configuration for the first terminal for SL-PRS sending, and the first request includes second information.

[0102] Optionally, in an embodiment of the present application, the second communication device is a base station corresponding to a serving or resident cell of the first terminal.

[0103] The second communication device is determined by the cell identifier indicated in the positioning request, or is determined by the first communication device through searching according to the identifier of the first terminal.

[0104] Optionally, in the embodiment of the present application, the first communication device is a positioning service terminal. The step 202b can be implemented by any one of the following steps 202b1 to 202b3.

[0105] Step 202b1: The positioning service terminal sends a first request to the second communication device via the third communication device.

[0106] The third communication device is a base station corresponding to a service cell of the positioning service terminal, and the first request also includes an identifier of a service or resident cell of the first terminal and an identifier of the first terminal.

[0107] It can be understood that the positioning service terminal can send a request to the service cell of the positioning service terminal, which includes the identifier of the service or resident cell of the first terminal, the identifier of the first terminal and the second information; after receiving the request, the service cell of the positioning service terminal forwards it to the service or resident cell of the first terminal.

[0108] Step 202b2: The positioning service terminal sends a first request to the second communication device via the LMF network element.

[0109] The first request also includes an identifier of the first terminal.

[0110] It can be understood that the positioning service terminal can send a request to the LMF network element, and the request includes the identifier of the first terminal and the second information. The LMF network element sends the second information to the service or resident cell of the first terminal.

[0111] Step 202b3: The positioning service terminal sends a first request to the second communication device via the first terminal.

[0112] It can be understood that the positioning service terminal sends a request to the first terminal, and then the first terminal sends a request to the serving or camping cell of the first terminal, and the request includes the second information.

[0113] Step 202c: The second communication device receives the first request sent by the first communication device, and configures a first SL-PRS resource pool configuration for the first terminal according to the first request.

[0114] Step 202d: The second communication device sends a first response to the first communication device.

[0115] Step 202e: The first communication device receives a first response sent by the second communication device.

[0116] In an embodiment of the present application, the first response is used to indicate that a first SL-PRS resource pool configuration has been configured for the first terminal, and the first SL-PRS resource pool configuration is configured based on the second information.

[0117] Optionally, in an embodiment of the present application, the above-mentioned first SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a first SL-PRS sending priority, a SL channel busy rate CBR range, and an optional range of SL-PRS time-frequency resources.

[0118] Step 202f: The first communication device sends first information to the first terminal according to the first response.

[0119] Optionally, in an embodiment of the present application, when the first response does not include the first SL-PRS resource pool configuration, the first information includes a first SL-PRS time-frequency resource requirement, and the first SL-PRS time-frequency resource requirement is the same as the second SL-PRS time-frequency resource requirement in the second information.

[0120] Optionally, in an embodiment of the present application, when the first response includes the first SL-PRS resource pool configuration, the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement and third information in the first SL-PRS resource pool configuration. The first SL-PRS time-frequency resource requirement is determined based on the optional range of SL-PRS time-frequency resources in the first SL-PRS resource pool configuration, and the third information includes at least one of the following: a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier.

[0121] Exemplarily, the second SL-PRS time-frequency resource requirement in the second information sent by the first communication device to the second communication device is an interval range 1; the second communication device configures the first SL-PRS resource pool configuration according to the interval range 1 as an optional range of SL-PRS time-frequency resources as interval range 2 (for example, interval range 2 is smaller than interval range 1), and feeds back the first SL-PRS resource pool configuration to the first communication device through a first response, for example, including the optional range of SL-PRS time-frequency resources; after receiving the first SL-PRS resource pool configuration, the first communication device determines that the first SL-PRS time-frequency resource requirement is interval range 2, or range 3 or a specific value which is smaller than interval range 2, based on the second SL-PRS time-frequency resource requirement and the optional range of SL-PRS time-frequency resources in the first SL-PRS resource pool configuration.

[0122] Optionally, in an embodiment of the present application, the optional range of the SL-PRS time-frequency resource and the first SL-PRS time-frequency resource requirement meet any of the following:

[0123] The optional range of the SL-PRS time-frequency resources mentioned above includes the first SL-PRS time-frequency resource requirement mentioned above;

[0124] The first SL-PRS time-frequency resource requirement includes the optional range of the SL-PRS time-frequency resources;

[0125] The above-mentioned SL-PRS time-frequency resource optional range and the above-mentioned first SL-PRS time-frequency resource requirement do not include each other but have an intersection.

[0126] Optionally, in another implementation of the embodiment of the present application, in combination with Figure 2 ,like Figure 4 As shown, the above step 202 can be specifically implemented through the following steps 202g and 202h.

[0127] Step 202g: The first communication device obtains the second SL-PRS resource pool configuration of the first terminal according to the positioning request.

[0128] Optionally, in an embodiment of the present application, the above-mentioned second SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a second SL-PRS sending priority, an SL CBR range, and an optional range of SL-PRS time-frequency resources.

[0129] Optionally, in an embodiment of the present application, the above-mentioned SL-PRS transmission priority may refer to an optional range of SL-PRS transmission parameters, and the optional range of SL-PRS transmission parameters includes multiple SL-PRS transmission parameter values, and the multiple SL-PRS transmission parameter values ​​represent different SL-PRS transmission priorities. It should be noted that the SL-PRS transmission priority here can be the above-mentioned first SL-PRS transmission priority, or the second SL-PRS transmission priority.

[0130] Optionally, in an embodiment of the present application, the first terminal may obtain the second SL-PRS resource pool configuration from the second communication device in advance. For example, the second communication device may send the second SL-PRS resource pool configuration to the first terminal via RRC dedicated signaling or broadcasting.

[0131] Optionally, in an embodiment of the present application, if the positioning request indicates the use of SL positioning, or the first communication device decides to use SL positioning, the first communication device obtains the second SL-PRS resource pool configuration of the first terminal according to the positioning request.

[0132] Step 202h: The first communication device sends first information to the first terminal according to the second SL-PRS resource pool configuration.

[0133] Among them, in this implementation, the above-mentioned first information includes at least one of the following items in the second SL-PRS resource pool configuration: a first BWP identifier, a first SL resource pool identifier.

[0134] It can be understood that in this implementation method, after the first communication device obtains the positioning request, at least one of the following items in the second SL-PRS resource pool configuration of the first terminal: the first BWP identifier, the first SL resource pool identifier, can be directly sent to the first terminal, so that the first terminal can determine the sending parameters of the SL-PRS.

[0135] Optionally, in another implementation of the embodiment of the present application, in combination with Figure 2 ,like Figure 5 As shown, the above step 202 can be specifically implemented through the following steps 202i to 202k.

[0136] Step 202i: The first communication device obtains the second SL-PRS resource pool configuration of the first terminal according to the positioning request.

[0137] Optionally, in the embodiment of the present application, the above step 202g or step 202i can be specifically implemented through the following step 303.

[0138] Step 303: The first communication device sends a second request to a second terminal that needs to be located, and receives a second SL-PRS resource pool configuration of the first terminal fed back by the second terminal.

[0139] In the embodiment of the present application, the second request includes an identifier of a third terminal with a known location.

[0140] Optionally, in an embodiment of the present application, before the above step 203, the method for determining the SL-PRS sending parameters provided in the embodiment of the present application further includes the following step 304.

[0141] Step 304: The first terminal receives the second request sent by the first communication device, and feeds back the second SL-PRS resource pool configuration of the fourth terminal to the first communication device.

[0142] The first terminal in step 304 is the second terminal to be located, the fourth terminal includes at least one of the following: the second terminal and a third terminal with a known location, and the second request includes an identifier of the third terminal.

[0143] It can be understood that, in combination with step 303 and step 304, the specific process of the first communication device obtaining the second SL-PRS resource pool configuration is: the first communication device sends a second request to the second terminal that needs to be located; the second terminal receives the second request sent by the first communication device; the second terminal feeds back the second SL-PRS resource pool configuration of the fourth terminal to the first communication device; the first communication device receives the second SL-PRS resource pool configuration of the first terminal fed back by the second terminal. It should be noted that the fourth terminal here is the same as the first terminal here.

[0144] Optionally, in the embodiment of the present application, the above step 202g or step 202i can be specifically implemented through the following step 305.

[0145] Step 305: The first communication device sends a third request to the first terminal, and receives the SL-PRS resource pool configuration fed back by each terminal in the first terminal.

[0146] Optionally, in an embodiment of the present application, when the first communication device is an LMF network element, the first communication device may send a third request to the first terminal through the AMF network element.

[0147] Optionally, in an embodiment of the present application, before the above step 203, the method for determining the SL-PRS sending parameters provided in the embodiment of the present application further includes the following step 306.

[0148] Step 306: The first terminal receives the third request sent by the first communication device, and feeds back the second SL-PRS resource pool configuration to the first communication device.

[0149] The second SL-PRS resource pool configuration includes the SL-PRS resource pool configuration of each terminal in the first terminal.

[0150] It can be understood that, in combination with step 305 and step 306, the specific process of the first communication device obtaining the second SL-PRS resource pool configuration is: the first communication device sends a third request to the first terminal; the first terminal receives the third request sent by the first communication device; the first terminal feeds back the second SL-PRS resource pool configuration to the first communication device, including the SL-PRS resource pool configuration of each terminal in the first terminal; the first communication device receives the SL-PRS resource pool configuration fed back by each terminal in the first terminal.

[0151] Step 202j: The first communication device determines fourth information according to the positioning request.

[0152] In an embodiment of the present application, the fourth information includes at least one of the following: SL-PRS resource pool type requirement, and third SL-PRS time-frequency resource requirement.

[0153] For example, when all SL-PRS resource pools of the first terminal cannot meet the positioning requirements / time-frequency resource requirements, the SL-PRS resource pool type requirement can be selected as mode 1, that is, the network schedules the resources for sending SL-PRS.

[0154] Step 202k: The first communication device determines the first information according to the second SL-PRS resource pool configuration and the fourth information, and sends the first information to the first terminal.

[0155] Among them, in this implementation, the above-mentioned first information includes at least one of the following: a first SL-PRS sending priority, and a first SL-PRS time-frequency resource requirement.

[0156] Optionally, in an embodiment of the present application, when the above-mentioned second SL-PRS resource pool configuration includes at least a second SL-PRS transmission priority, the first SL-PRS transmission priority in the first information here can be generated according to the SL-PRS transmission parameter optional range corresponding to the second SL-PRS transmission priority (the SL-PRS transmission parameter optional range includes multiple SL-PRS transmission parameter values, and the multiple SL-PRS transmission parameter values ​​represent different SL-PRS transmission priorities) and the third SL-PRS time-frequency resource demand in the fourth information.

[0157] Optionally, in an embodiment of the present application, the first SL-PRS time-frequency resource requirement in the first information here can be generated based on the SL-PRS transmission parameter optional range corresponding to the first SL-PRS priority in the first information (the SL-PRS transmission parameter optional range includes multiple SL-PRS transmission parameter values, and the multiple SL-PRS transmission parameter values ​​represent different SL-PRS transmission priorities) and the third SL-PRS time-frequency resource requirement in the fourth information.

[0158] Step 204: The first terminal determines a transmission parameter of the SL-PRS according to the first information.

[0159] Optionally, in the embodiment of the present application, combined with Figure 2 ,like Figure 6 As shown, the above step 204 can be specifically implemented through the following steps 204a and 204b.

[0160] Step 204a: The first terminal selects a first resource pool corresponding to the first BWP identifier and the first SL resource pool identifier according to the first information.

[0161] Step 204b: The first terminal selects SL-PRS time-frequency resource parameters within the optional range of SL-PRS time-frequency resources associated with the first resource pool and the first SL-PRS time-frequency resource requirement according to the first SL-PRS transmission priority and the measured SL CBR to determine the transmission parameters of the SL-PRS.

[0162] In an embodiment of the present application, after the SLPP layer of the first terminal receives the above-mentioned fourth request, it sends the first information in the fourth request to the MAC layer of the first terminal; after the MAC layer of the first terminal triggers resource pool reselection, it gives priority to selecting the first resource pool corresponding to the first BWP identifier and the first SL resource pool identifier; after the MAC layer of the first terminal triggers resource selection or reselection, according to the first SL-PRS sending priority and the measured CBR, selects the SL-PRS time-frequency resource parameters from the intersection of the SL-PRS time-frequency resource optional range associated with the selected first resource pool and the first SL-PRS sending time-frequency resource requirement, and sends them to the PHY layer of the first terminal, determines the optional resource set, and obtains the SL-PRS sending parameters.

[0163] Optionally, in an embodiment of the present application, before the above step 203, the method for determining the SL-PRS sending parameters provided in the embodiment of the present application further includes the following step 401.

[0164] Step 401: A first terminal receives a first SL-PRS resource pool configuration sent by a second communication device.

[0165] In an embodiment of the present application, the first SL-PRS resource pool configuration is configured for the first terminal based on the second information. The second information is determined based on the positioning request, and the second information includes at least one of the following: SL-PRS resource pool type requirement, second SL-PRS time-frequency resource requirement.

[0166] It can be understood that after configuring the first SL-PRS resource pool configuration for the first terminal according to the above-mentioned first request, the second communication device can send the first SL-PRS resource pool configuration to the first terminal.

[0167] Optionally, in an embodiment of the present application, the above-mentioned first SL-PRS resource pool configuration is sent to the first terminal by the second communication device through RRC dedicated signaling or broadcasting.

[0168] Optionally, in the embodiment of the present application, the first information includes the first SL-PRS time-frequency resource requirement. The step 204 can be specifically implemented by the following step 204c.

[0169] Step 204c: The first terminal determines the SL-PRS sending parameters according to the first information and the first SL-PRS resource pool configuration.

[0170] It can be understood that the first terminal can determine the transmission parameters of the SL-PRS according to the first SL-PRS time-frequency resource requirements and the information in the first SL-PRS resource pool configuration, such as at least one of the following items in the first SL-PRS resource pool configuration: the first BWP identifier, the first SL resource pool identifier, and the first SL-PRS transmission priority. The specific implementation method can be found in the description of the above steps 204a and 204b, which will not be repeated here.

[0171] The embodiment of the present application provides a method for determining SL-PRS transmission parameters, where a first communication device can obtain a positioning request, where the positioning request includes at least one of positioning QoS requirements, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal, and based on the positioning request, sends first information for determining SL-PRS transmission parameters to the first terminal, where the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS transmission priority, a first BWP identifier, and a first SL resource pool identifier. Through this solution, the first communication device can configure resource information for determining SL-PRS transmission parameters to the first terminal based on the obtained positioning request of the terminal to be located, so that the SL-PRS transmission parameters determined by the first terminal can meet the positioning QoS requirements, improve the transmission effectiveness of the SL-PRS, and improve the efficiency of the terminal's SL positioning.

[0172] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation method can be determined according to actual usage requirements, and the embodiments of the present application do not limit this.

[0173] The following describes the interaction process of various communication devices involved in the method for determining the SL-PRS transmission parameters of the embodiment of the present application through specific implementation methods (implementation one to implementation four).

[0174] Implementation method 1: The resource pool used by SL-PRS can be configured as required, for network-based positioning (NW-based positioning), that is, positioning involving LMF network elements.

[0175] like Figure 7 As shown, the process of the method for determining the SL-PRS transmission parameters of an embodiment of the present application includes the following steps 20 to 27.

[0176] Step 20: The second terminal that needs to be located sends a positioning request to the LMF network element.

[0177] Step 21: The LMF network element receives a positioning request sent by the second terminal that needs to be located.

[0178] The positioning request includes at least one of the following: positioning QoS requirement, an identifier of the first terminal, and an identifier of a service or resident cell of the first terminal.

[0179] Step 22: If the positioning request indicates to use SL positioning, or the LMF network element decides to use SL positioning, the LMF network element determines the second information based on the positioning request.

[0180] The second information includes at least one of the following: SL-PRS resource pool type requirement, second SL-PRS time-frequency resource requirement. One confirmation method is to select mode 1 for positioning requirements with low latency requirements, that is, the network schedules resources for sending SL-PRS.

[0181] Step 23: The LMF network element sends the second information to the base station.

[0182] The base station here refers to the second communication device mentioned above, that is, the base station corresponding to the service or resident cell of the first terminal.

[0183] Step 24: The base station sends the first SL-PRS resource pool configuration to the first terminal according to the second information.

[0184] Optionally, the first terminal includes at least one of the following: a second terminal to be located, a third terminal with a known location, Figure 7In the figure, an example is taken in which the first terminal includes a second terminal that needs to be located and a third terminal whose location is known.

[0185] Optionally, the base station may send a first SL-PRS resource pool configuration that can be used for SL-PRS transmission to the first terminal via RRC dedicated signaling or broadcasting.

[0186] Step 25: The base station sends a first response to the LMF network element, indicating that the first SL-PRS resource pool configuration has been configured for the first terminal.

[0187] Optionally, the first response includes a first SL-PRS resource pool configuration.

[0188] Step 26: The LMF network element sends a fourth request to the first terminal, where the fourth request includes the first information.

[0189] The fourth request is a SL-PRS sending request, i.e., used to request the first terminal to send SL-PRS. The first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first BWP identifier, and a first SL resource pool identifier.

[0190] Optionally, the SL-PRS sending request may be a SLPP message.

[0191] Step 27a: After receiving the first information, the SLPP layer of the first terminal sends the first information to the MAC layer of the first terminal.

[0192] It can be understood that after receiving the fourth request, the SLPP layer of the first terminal sends the first information in the fourth request to the MAC layer of the first terminal.

[0193] Step 27b: After the MAC layer of the first terminal triggers resource pool reselection, the first resource pool corresponding to the first BWP identifier and the first SL resource pool identifier is preferentially selected.

[0194] Step 27c, after the MAC layer of the first terminal triggers resource selection or reselection, based on the first SL-PRS transmission priority and the measured CBR, select the SL-PRS time-frequency resource parameters within the optional range of SL-PRS time-frequency resources associated with the selected first resource pool and the first SL-PRS time-frequency resource requirements, and send them to the PHY layer of the first terminal to determine the optional resource set and obtain the SL-PRS transmission parameters.

[0195] It should be noted that, for the contents, specific implementation methods and beneficial effects involved in the above steps 20 to 27, please refer to the description in the above embodiments, which will not be repeated here.

[0196] Implementation method 2: The resource pool used by SL-PRS can be configured as required, for positioning involving only UE (UE-only positioning), that is, positioning in which the LMF network element does not participate.

[0197] like Figure 8 As shown, the process of the method for determining the SL-PRS transmission parameters of an embodiment of the present application includes the following steps 31 to 37.

[0198] Step 31: The positioning service terminal obtains a positioning request.

[0199] The positioning request includes at least one of the following: positioning QoS requirement, an identifier of the first terminal, and an identifier of a service or resident cell of the first terminal.

[0200] Optionally, when the second terminal to be located serves as a positioning service terminal, the positioning service terminal obtains the positioning request for the second terminal to obtain its own positioning request, and there is no need to interact with other terminals to obtain the positioning request. When the second terminal to be located does not serve as a positioning service terminal, the positioning service terminal obtains the positioning request for the positioning service terminal to receive the positioning request from the second terminal.

[0201] Step 32: The positioning service terminal determines the second information according to the positioning request.

[0202] The second information includes at least one of the following: SL-PRS resource pool type requirement and second SL-PRS time-frequency resource requirement.

[0203] Step 33: The positioning service terminal sends the second information to the base station.

[0204] The base station here refers to the second communication device mentioned above, that is, the base station corresponding to the service or resident cell of the first terminal.

[0205] Optionally, the sending manner of the positioning service terminal sending the second information to the base station includes any one of the following:

[0206] The positioning service terminal sends a request to its own serving cell, the request including an identifier of a serving or resident cell of the first terminal, an identifier of the first terminal, and second information; after receiving the request, the serving cell of the positioning service terminal forwards the request to the serving or resident cell of the first terminal;

[0207] The positioning service terminal sends a request to the LMF network element, the request includes the identifier of the first terminal and the second information, and the LMF network element sends the second information to the service or resident cell of the first terminal;

[0208] The positioning service terminal sends a request to the first terminal, and then the first terminal sends a request to the serving or camping cell of the first terminal, wherein the request includes the second information.

[0209] Step 34: The base station sends the first SL-PRS resource pool configuration to the first terminal according to the second information.

[0210] Optionally, the first terminal includes at least one of the following: a second terminal to be located, a third terminal with a known location, Figure 8 In the figure, an example is taken in which the first terminal includes a second terminal that needs to be located and a third terminal whose location is known.

[0211] Optionally, the base station may send a first SL-PRS resource pool configuration that can be used for SL-PRS transmission to the first terminal via RRC dedicated signaling or broadcasting.

[0212] Step 35: The base station sends a first response to the positioning service terminal, indicating that the first SL-PRS resource pool configuration has been configured for the first terminal.

[0213] Optionally, the first response includes a first SL-PRS resource pool configuration.

[0214] Step 36: The positioning service terminal sends a fourth request to the first terminal, where the fourth request includes the first information.

[0215] The fourth request is a SL-PRS sending request, i.e., used to request the first terminal to send SL-PRS. The first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first BWP identifier, and a first SL resource pool identifier.

[0216] Optionally, the SL-PRS sending request may be a SLPP message.

[0217] Steps 37a to 37c are the same as the above-mentioned steps 27a to 27c and will not be repeated here.

[0218] It should be noted that, for the contents, specific implementation methods and beneficial effects involved in the above steps 31 to 37, please refer to the description in the above embodiments, which will not be repeated here.

[0219] Implementation method three: The resource pool used by SL-PRS cannot be configured as required, targeting network-based positioning (NW-based positioning), that is, positioning involving LMF network elements.

[0220] like Fig. 9 As shown, the process of the method for determining the SL-PRS transmission parameters of the embodiment of the present application includes the following steps 40 to 46.

[0221] Step 40: The first terminal obtains the second SL-PRS resource pool configuration.

[0222] Optionally, the first terminal includes at least one of the following: a second terminal to be located, a third terminal with a known location, Fig. 9 In the figure, an example is taken in which the first terminal includes a second terminal that needs to be located and a third terminal whose location is known.

[0223] The second communication device may send the second SL-PRS resource pool configuration to the first terminal via RRC dedicated signaling or broadcasting.

[0224] Step 41: The second terminal sends a positioning request to the LMF network element.

[0225] Step 42: The LMF network element receives a positioning request sent by the second terminal.

[0226] The positioning request includes at least one of the following items: positioning QoS requirement and an identifier of the first terminal.

[0227] Step 43: If the positioning request indicates to use SL positioning, or the LMF network element decides to use SL positioning, the LMF network element obtains the second SL-PRS resource pool configuration of the first terminal.

[0228] Among them, the acquisition method of the LMF network element acquiring the second SL-PRS resource pool configuration of the first terminal includes any of the following:

[0229] The LMF network element sends a request to the second terminal, where the request includes an identifier of the third terminal, and the second terminal feeds back the second SL-PRS resource pool configuration of the first terminal;

[0230] The LMF network element sends a request to the first terminal. For example, the LMF network element can send a request to the first terminal through the AMF network element, and each terminal in the first terminal feeds back its own SL-PRS resource pool configuration.

[0231] Step 44: The LMF network element determines the fourth information according to the positioning request.

[0232] Among them, the above-mentioned fourth information includes at least one of the following: SL-PRS resource pool type requirement, third SL-PRS time-frequency resource requirement.

[0233] Optionally, the third SL-PRS time-frequency resource requirement: One confirmation method is that if all SL-PRS resource pool configurations of the current first terminal cannot meet the time-frequency resource requirements, mode 1 is selected, that is, the network schedules the resources for sending SL-PRS.

[0234] Optionally, the third SL-PRS time-frequency resource requirement: a confirmation method is to select an optional parameter value from an optional range of SL-PRS time-frequency resources in the SL-PRS resource pool configuration of the first terminal.

[0235] Step 45: The LMF network element determines the first information according to the second SL-PRS resource pool configuration and the fourth information, and sends the first information to the first terminal.

[0236] The first information includes at least one of the following: a first SL-PRS transmission priority, a first SL-PRS time-frequency resource requirement. Optionally, the first information may also include at least one of the following: a first BWP identifier, a first SL resource pool identifier.

[0237] Optionally, the first information may be sent via an SLPP message.

[0238] Steps 46a to 46c are the same as the above-mentioned steps 27a to 27c and will not be repeated here.

[0239] It should be noted that, for the contents, specific implementation methods and beneficial effects involved in the above steps 40 to 46, please refer to the description in the above embodiments, which will not be repeated here.

[0240] Implementation method 4: The resource pool used by SL-PRS cannot be configured as required, for positioning involving only UE (UEonly positioning), that is, positioning in which the LMF network element does not participate.

[0241] like Fig.10 As shown, the process of the method for determining the SL-PRS transmission parameters of an embodiment of the present application includes the following steps 50 to 55.

[0242] Step 50: The first terminal obtains the second SL-PRS resource pool configuration.

[0243] Optionally, the first terminal includes at least one of the following: a second terminal to be located, a third terminal with a known location, Fig.10 In the figure, an example is taken in which the first terminal includes a second terminal that needs to be located and a third terminal whose location is known.

[0244] The second communication device may send the second SL-PRS resource pool configuration to the first terminal via RRC dedicated signaling or broadcasting.

[0245] Step 51: The positioning service terminal obtains a positioning request.

[0246] The positioning request includes at least one of the following items: positioning QoS requirement and an identifier of the first terminal.

[0247] Optionally, when the second terminal to be located serves as a positioning service terminal, the positioning service terminal obtains the positioning request for the second terminal to obtain its own positioning request, and there is no need to interact with other terminals to obtain the positioning request. When the second terminal to be located does not serve as a positioning service terminal, the positioning service terminal obtains the positioning request for the positioning service terminal to receive the positioning request from the second terminal.

[0248] Step 52: The positioning service terminal obtains the second SL-PRS resource pool configuration of the first terminal.

[0249] The method in which the positioning service terminal obtains the second SL-PRS resource pool configuration of the first terminal includes any of the following:

[0250] The positioning service terminal sends a request to the second terminal, where the request includes an identifier of the third terminal, and the second terminal feeds back the second SL-PRS resource pool configuration of the first terminal;

[0251] The positioning service terminal sends a request to the first terminal, and each terminal in the first terminal feeds back its own SL-PRS resource pool configuration.

[0252] Step 53: The positioning service terminal determines fourth information according to the positioning request.

[0253] Among them, the above-mentioned fourth information includes at least one of the following: SL-PRS resource pool type requirement, third SL-PRS time-frequency resource requirement.

[0254] Optionally, the third SL-PRS time-frequency resource requirement: One confirmation method is that if all SL-PRS resource pool configurations of the current first terminal cannot meet the time-frequency resource requirements, mode 1 is selected, that is, the network schedules the resources for sending SL-PRS.

[0255] Optionally, the third SL-PRS time-frequency resource requirement: a confirmation method is to select an optional parameter value from an optional range of SL-PRS time-frequency resources in the SL-PRS resource pool configuration of the first terminal.

[0256] Step 54: The positioning service terminal determines the first information according to the second SL-PRS resource pool configuration and the fourth information, and sends the first information to the first terminal.

[0257] The first information includes at least one of the following: a first SL-PRS transmission priority, a first SL-PRS time-frequency resource requirement. Optionally, the first information may also include at least one of the following: a first BWP identifier, a first SL resource pool identifier.

[0258] Optionally, the first information may be sent via an SLPP message.

[0259] Steps 55a to 55c are the same as the above-mentioned steps 27a to 27c and will not be repeated here.

[0260] It should be noted that, for the contents, specific implementation methods and beneficial effects involved in the above steps 50 to 55, please refer to the description in the above embodiments, which will not be repeated here.

[0261] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation method can be determined according to actual usage requirements, and the embodiments of the present application do not limit this.

[0262] The method for determining SL-PRS transmission parameters provided in the embodiment of the present application may be executed by a device for determining SL-PRS transmission parameters. In the embodiment of the present application, the device for determining SL-PRS transmission parameters provided in the embodiment of the present application is described by taking the method for determining SL-PRS transmission parameters performed by the device for determining SL-PRS transmission parameters as an example.

[0263] Fig.11 FIG. 2 shows a possible structural diagram of a device for determining SL-PRS transmission parameters involved in an embodiment of the present application. Fig.11 As shown, the SL-PRS transmission parameter determination device 60 may include: an acquisition module 61 and a transmission module 62.

[0264] Among them, the acquisition module 61 is used to obtain a positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, an identifier of the first terminal, and an identifier of the service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning. The sending module 62 is used to send first information to the first terminal according to the positioning request obtained by the acquisition module 61, and the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first BWP identifier, and a first SL resource pool identifier; the first information is used to determine the sending parameters of the SL-PRS.

[0265] An embodiment of the present application provides a device for determining SL-PRS sending parameters. The device for determining SL-PRS sending parameters can configure resource information for determining SL-PRS sending parameters to a first terminal based on an acquired positioning request of a terminal that needs to be positioned, so that the SL-PRS sending parameters determined by the first terminal can meet the positioning QoS requirements, improve the transmission effectiveness of the SL-PRS, and improve the efficiency of SL positioning of the terminal.

[0266] In a possible implementation, the first communication device is a LMF network element or a positioning service terminal; the first terminal includes at least one of the following: a second terminal that needs to be located, and a third terminal with a known position.

[0267] In a possible implementation, the sending module 62 is specifically configured to:

[0268] Determine second information according to the positioning request, where the second information includes at least one of the following: a SL-PRS resource pool type requirement, a second SL-PRS time-frequency resource requirement; and

[0269] Sending a first request to a second communication device, the first request being used to request configuration of an SL-PRS resource pool for SL-PRS transmission for the first terminal, the first request including second information; and,

[0270] receiving a first response sent by a second communication device, the first response being used to indicate that a first SL-PRS resource pool configuration has been configured for the first terminal, the first SL-PRS resource pool configuration being configured based on the second information; and,

[0271] According to the first response, first information is sent to the first terminal.

[0272] In one possible implementation, when the first response does not include the first SL-PRS resource pool configuration, the first information includes a first SL-PRS time-frequency resource requirement, which is the same as the second SL-PRS time-frequency resource requirement in the second information.

[0273] In a possible implementation, the first SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a first SL-PRS transmission priority, an SL CBR range, and an optional range of SL-PRS time-frequency resources.

[0274] In a possible implementation, when the first response includes the first SL-PRS resource pool configuration, the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement and third information in the first SL-PRS resource pool configuration; wherein the first SL-PRS time-frequency resource requirement is determined based on the optional range of SL-PRS time-frequency resources in the first SL-PRS resource pool configuration, and the third information includes at least one of the following: a first SL-PRS sending priority, a first BWP identifier, and a first SL resource pool identifier.

[0275] In a possible implementation, the first communication device is a positioning service terminal; and the sending module 62 is specifically used for any of the following:

[0276] Sending a first request to the second communication device via a third communication device, where the third communication device is a base station corresponding to a service cell of the positioning service terminal, and the first request also includes an identifier of a service or resident cell of the first terminal and an identifier of the first terminal;

[0277] Sending a first request to the second communication device via the LMF network element, where the first request also includes an identifier of the first terminal;

[0278] A first request is sent to a second communication device via the first terminal.

[0279] In a possible implementation, the second communication device is a base station corresponding to a serving or resident cell of the first terminal; wherein the second communication device is determined by a cell identifier indicated by a positioning request, or is determined by the first communication device based on an identifier of the first terminal.

[0280] In a possible implementation, the above-mentioned sending module 62 is specifically used to obtain the second SL-PRS resource pool configuration of the first terminal according to the positioning request; and, according to the second SL-PRS resource pool configuration, send first information to the first terminal; wherein the first information includes at least one of the following items in the second SL-PRS resource pool configuration: a first BWP identifier, a first SL resource pool identifier.

[0281] In a possible implementation, the sending module 62 is specifically configured to:

[0282] acquiring, according to the positioning request, a second SL-PRS resource pool configuration of the first terminal; and,

[0283] Determine fourth information according to the positioning request, where the fourth information includes at least one of the following: a SL-PRS resource pool type requirement, a third SL-PRS time-frequency resource requirement; and

[0284] According to the second SL-PRS resource pool configuration and the fourth information, the first information is determined and sent to the first terminal; wherein the first information includes at least one of the following: a first SL-PRS sending priority and a first SL-PRS time-frequency resource requirement.

[0285] In a possible implementation, the second SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a second SL-PRS transmission priority, an SL CBR range, and an optional range of SL-PRS time-frequency resources.

[0286] In a possible implementation, the sending module 62 is specifically used for any of the following:

[0287] Sending a second request to a second terminal that needs to be located, and receiving a second SL-PRS resource pool configuration of the first terminal fed back by the second terminal, wherein the second request includes an identifier of a third terminal whose location is known;

[0288] A third request is sent to the first terminal, and an SL-PRS resource pool configuration fed back by each terminal in the first terminal is received.

[0289] In a possible implementation, the above-mentioned SL-PRS resource pool type requirement includes any one of the following: the network schedules the resources for sending the SL-PRS, and the terminal autonomously selects the resources for sending the SL-PRS.

[0290] In a possible implementation manner, the optional range of the SL-PRS time-frequency resource and the first SL-PRS time-frequency resource requirement meet any of the following:

[0291] The optional range of SL-PRS time-frequency resources includes the first SL-PRS time-frequency resource requirement;

[0292] The first SL-PRS time-frequency resource requirement includes an optional range of SL-PRS time-frequency resources;

[0293] The optional range of SL-PRS time-frequency resources and the first SL-PRS time-frequency resource requirement do not include each other but have an intersection.

[0294] In one possible implementation, the above-mentioned SL-PRS time-frequency resource requirements include at least one of the following: SL-PRS period, SL-PRS bandwidth, SL-PRS comb structure size, number of SL-PRS repeated transmissions, and number of symbols occupied by SL-PRS in each time slot.

[0295] In a possible implementation, the acquisition module 61 is specifically configured to receive a positioning request sent by a second terminal that needs to be located.

[0296] In a possible implementation, the sending module 62 is specifically configured to send a fourth request to the first terminal according to the positioning request, where the fourth request is used to request sending the SL-PRS, and the fourth request includes the first information.

[0297] The device for determining the SL-PRS transmission parameters in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0298] The SL-PRS transmission parameter determination device provided in the embodiment of the present application can implement each process implemented by the first communication device in the above-mentioned SL-PRS transmission parameter determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0299] Fig.12 FIG. 2 shows a possible structural diagram of a device for determining SL-PRS transmission parameters involved in an embodiment of the present application. Fig.12 As shown, the SL-PRS transmission parameter determination device 70 may include: a receiving module 71 and a determining module 72.

[0300] The receiving module 71 is used to receive the first information sent by the first communication device; the first information is determined according to the positioning request, and the positioning request includes at least one of the following: positioning QoS requirements, the identifier of the first terminal, the identifier of the service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: the first SL-PRS time-frequency resource requirement, the first SL-PRS transmission priority, the first BWP identifier, and the first SL resource pool identifier. The determining module 72 is used to determine the transmission parameters of the SL-PRS according to the first information received by the receiving module 71.

[0301] An embodiment of the present application provides a device for determining SL-PRS transmission parameters. The device for determining SL-PRS transmission parameters can determine the transmission parameters of SL-PRS according to first information sent by a first communication device, and the first information is a positioning request of a terminal to be located obtained by the first communication device, so as to configure resource information for determining the transmission parameters of SL-PRS to the first terminal, so that the transmission parameters of SL-PRS determined by the device for determining SL-PRS transmission parameters can meet the positioning QoS requirements, improve the transmission effectiveness of SL-PRS, and improve the efficiency of SL positioning of the terminal.

[0302] In a possible implementation, the first communication device is a LMF network element or a positioning service terminal; the first terminal includes at least one of the following: a second terminal that needs to be located, and a third terminal with a known position.

[0303] In a possible implementation, the above-mentioned receiving module 71 is also used to receive a first SL-PRS resource pool configuration sent by a second communication device before receiving the first information sent by the first communication device, and the first SL-PRS resource pool configuration is configured for the first terminal based on the second information; wherein the second information is determined based on the positioning request, and the second information includes at least one of the following: SL-PRS resource pool type requirement, second SL-PRS time-frequency resource requirement.

[0304] In a possible implementation, the first information includes a first SL-PRS time-frequency resource requirement; the determination module 72 is specifically configured to determine the transmission parameters of the SL-PRS according to the first information and the first SL-PRS resource pool configuration.

[0305] In a possible implementation, the first SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a first SL-PRS transmission priority, an SL CBR range, and an optional range of SL-PRS time-frequency resources.

[0306] In a possible implementation, the above-mentioned SL-PRS resource pool type requirement includes any one of the following: the network schedules the resources for sending the SL-PRS, and the terminal autonomously selects the resources for sending the SL-PRS.

[0307] In a possible implementation, the second communication device is a base station corresponding to a serving or resident cell of the first terminal; wherein the second communication device is determined by a cell identifier indicated by a positioning request, or is determined by the first communication device based on an identifier of the first terminal.

[0308] In a possible implementation, the receiving module 71 is further configured to, before receiving the first information sent by the first communication device, further include any of the following:

[0309] receiving a second request sent by a first communication device, and feeding back a second SL-PRS resource pool configuration of a fourth terminal to the first communication device, where the first terminal is a second terminal that needs to be located, and the fourth terminal includes at least one of the following: the second terminal and a third terminal with a known location, and the second request includes an identifier of the third terminal;

[0310] A third request sent by the first communication device is received, and a second SL-PRS resource pool configuration is fed back to the first communication device, where the second SL-PRS resource pool configuration includes the SL-PRS resource pool configuration of each terminal in the first terminal.

[0311] In a possible implementation, the second SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, a first BWP identifier, a first SL resource pool identifier, a second SL-PRS transmission priority, an SL CBR range, and an optional range of SL-PRS time-frequency resources.

[0312] In a possible implementation manner, the optional range of the SL-PRS time-frequency resource and the first SL-PRS time-frequency resource requirement meet any of the following:

[0313] The optional range of SL-PRS time-frequency resources includes the first SL-PRS time-frequency resource requirement;

[0314] The first SL-PRS time-frequency resource requirement includes an optional range of SL-PRS time-frequency resources;

[0315] The optional range of SL-PRS time-frequency resources and the first SL-PRS time-frequency resource requirement do not include each other but have an intersection.

[0316] In one possible implementation, the above-mentioned SL-PRS time-frequency resource requirements include at least one of the following: SL-PRS period, SL-PRS bandwidth, SL-PRS comb structure size, number of SL-PRS repeated transmissions, and number of symbols occupied by SL-PRS in each time slot.

[0317] In a possible implementation, the above-mentioned determination module 72 is specifically used to select the first resource pool corresponding to the first BWP identifier and the first SL resource pool identifier according to the first information; and, according to the first SL-PRS transmission priority and the measured SL CBR, select the SL-PRS time-frequency resource parameters within the optional range of SL-PRS time-frequency resources associated with the first resource pool and the first SL-PRS time-frequency resource requirements to determine the transmission parameters of the SL-PRS.

[0318] In a possible implementation, the receiving module 71 is specifically configured to receive a fourth request sent by the first communication device, where the fourth request is used to request to send the SL-PRS, and the fourth request includes the first information.

[0319] The device for determining the SL-PRS transmission parameters in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0320] The SL-PRS transmission parameter determination device provided in the embodiment of the present application can implement the various processes implemented by the first terminal in the above-mentioned SL-PRS transmission parameter determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0321] Alternatively, if Fig.13As shown, the embodiment of the present application also provides a communication device 5000, including a processor 5001 and a memory 5002, and the memory 5002 stores a program or instruction that can be run on the processor 5001. For example, when the communication device 5000 is the above-mentioned first communication device, the program or instruction is executed by the processor 5001 to implement the various steps of the above-mentioned first communication device side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 5000 is the above-mentioned first terminal, the program or instruction is executed by the processor 5001 to implement the various steps of the above-mentioned first terminal side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0322] It should be noted that, in the embodiment of the present application, the first communication device may be a core network device of a network side device, such as an LMF network element, or the first communication device may be a positioning service terminal. The following embodiments illustrate the hardware structures of the network side device and the terminal respectively.

[0323] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the steps in the above method embodiment. The network side device embodiment corresponds to the above first communication device side method embodiment, and each implementation process and implementation method of the above method embodiment can be applied to the network side device embodiment and can achieve the same technical effect.

[0324] Specifically, the embodiment of the present application also provides a network side device. Fig.14 As shown, the network side device 800 includes: a processor 801, a network interface 802 and a memory 803. The network interface 802 is, for example, a Common Public Radio Interface (CPRI).

[0325] Specifically, the network side device 800 of the embodiment of the present invention also includes: instructions or programs stored in the memory 803 and executable on the processor 801. The processor 801 calls the instructions or programs in the memory 803 to execute the methods executed by the modules shown in the above embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0326] The network side device provided in the embodiment of the present application can implement each process implemented by the first communication device in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0327] The embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the steps in the above method embodiment. The terminal embodiment corresponds to the above method embodiment on the first communication device side or the first terminal side, and each implementation process and implementation method of the above method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, Fig.15 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0328] The terminal 7000 includes but is not limited to: a radio frequency unit 7001, a network module 7002, an audio output unit 7003, an input unit 7004, a sensor 7005, a display unit 7006, a user input unit 7007, an interface unit 7008, a memory 7009 and at least some of the components of a processor 7010.

[0329] Those skilled in the art will appreciate that the terminal 7000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 7010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.15 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0330] It should be understood that in the embodiment of the present application, the input unit 7004 may include a graphics processing unit (GPU) 70041 and a microphone 70042, and the graphics processor 70041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 7006 may include a display panel 70061, and the display panel 70061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 7007 includes a touch panel 70071 and at least one of other input devices 70072. The touch panel 70071 is also called a touch screen. The touch panel 70071 may include two parts: a touch detection device and a touch controller. Other input devices 70072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0331] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 7001 can transmit the data to the processor 7010 for processing; in addition, the RF unit 7001 can send uplink data to the network side device. Generally, the RF unit 7001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0332] The memory 7009 can be used to store software programs or instructions and various data. The memory 7009 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 instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 7009 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 7009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0333] The processor 7010 may include one or more processing units; optionally, the processor 7010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 7010.

[0334] The terminal provided in the embodiment of the present application can implement each process implemented by the first communication device or the first terminal in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0335] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned SL-PRS sending parameter determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0336] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0337] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned SL-PRS sending parameter determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0338] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0339] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned SL-PRS sending parameter determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0340] The embodiment of the present application also provides a communication system, including: a communication device and a terminal, wherein the communication device can be used to perform the steps of the method for determining the SL-PRS transmission parameters as described above, and the terminal can be used to perform the steps of the method for determining the SL-PRS transmission parameters as described above. The communication device here can be the LMF network element or the positioning service terminal in the above embodiment.

[0341] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0342] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0343] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A method for determining a sidelink positioning reference signal SL-PRS transmission parameter, characterized in that: include: The first communication device obtains a positioning request, where the positioning request includes at least one of the following: a positioning service quality QoS requirement, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; The first communication device sends first information to the first terminal based on the positioning request, and the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first bandwidth part BWP identifier, and a first SL resource pool identifier; the first information is used to determine the sending parameters of the SL-PRS.

2. The method according to claim 1, characterized in that The first communication device is a location management function LMF network element or a positioning service terminal; The first terminal includes at least one of the following: a second terminal that needs to be located, and a third terminal with a known location.

3. The method according to claim 1 or 2, characterized in that: The first communication device sending first information to the first terminal according to the positioning request includes: The first communication device determines second information according to the positioning request, where the second information includes at least one of the following: a SL-PRS resource pool type requirement and a second SL-PRS time-frequency resource requirement; The first communication device sends a first request to the second communication device, where the first request is used to request to configure a SL-PRS resource pool configuration for the first terminal for SL-PRS sending, and the first request includes the second information; The first communication device receives a first response sent by the second communication device, where the first response is used to indicate that a first SL-PRS resource pool configuration has been configured for the first terminal, and the first SL-PRS resource pool configuration is configured based on the second information; The first communication device sends the first information to the first terminal according to the first response.

4. The method according to claim 3, characterized in that In a case where the first SL-PRS resource pool configuration is not included in the first response, the first information includes the first SL-PRS time-frequency resource requirement, and the first SL-PRS time-frequency resource requirement is the same as the second SL-PRS time-frequency resource requirement in the second information.

5. The method according to claim 3, characterized in that: The first SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, the first BWP identifier, the first SL resource pool identifier, the first SL-PRS sending priority, SL channel busy rate CBR range, and SL-PRS time-frequency resource optional range.

6. The method according to claim 3 or 5, characterized in that: In the case where the first response includes the first SL-PRS resource pool configuration, the first information includes at least one of the following: the first SL-PRS time-frequency resource requirement and third information in the first SL-PRS resource pool configuration; Among them, the first SL-PRS time-frequency resource requirement is determined based on the optional range of SL-PRS time-frequency resources in the first SL-PRS resource pool configuration, and the third information includes at least one of the following: the first SL-PRS sending priority, the first BWP identifier, and the first SL resource pool identifier.

7. The method according to any one of claims 3 to 6, characterized in that The first communication device is a positioning service terminal; The first communication device sending a first request to the second communication device includes any one of the following: The positioning service terminal sends the first request to the second communication device via a third communication device, where the third communication device is a base station corresponding to a serving cell of the positioning service terminal, and the first request further includes an identifier of a serving or resident cell of the first terminal and an identifier of the first terminal; The positioning service terminal sends the first request to the second communication device via the LMF network element, where the first request also includes an identifier of the first terminal; The positioning service terminal sends the first request to the second communication device via the first terminal.

8. The method according to any one of claims 3 to 7, characterized in that The second communication device is a base station corresponding to a serving or camping cell of the first terminal; The second communication device is determined by the cell identifier indicated by the positioning request, or is determined by the first communication device according to the identifier of the first terminal.

9. The method according to claim 1 or 2, characterized in that: The first communication device sending first information to the first terminal according to the positioning request includes: The first communication device acquires, according to the positioning request, a second SL-PRS resource pool configuration of the first terminal; The first communication device sends the first information to the first terminal according to the second SL-PRS resource pool configuration; The first information includes at least one of the following items in the second SL-PRS resource pool configuration: the first BWP identifier and the first SL resource pool identifier.

10. The method according to claim 1 or 2, characterized in that: The first communication device sending first information to the first terminal according to the positioning request includes: The first communication device acquires, according to the positioning request, a second SL-PRS resource pool configuration of the first terminal; The first communication device determines fourth information according to the positioning request, where the fourth information includes at least one of the following: a SL-PRS resource pool type requirement and a third SL-PRS time-frequency resource requirement; The first communication device determines the first information according to the second SL-PRS resource pool configuration and the fourth information, and sends the first information to the first terminal; Among them, the first information includes at least one of the following: the first SL-PRS sending priority and the first SL-PRS time-frequency resource requirement.

11. The method according to claim 9 or 10, characterized in that: The second SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, the first BWP identifier, the first SL resource pool identifier, the second SL-PRS transmission priority, the SL CBR range, and the SL-PRS time-frequency resource optional range.

12. The method according to any one of claims 9 to 11, characterized in that The first communication device acquires, according to the positioning request, a second SL-PRS resource pool configuration of the first terminal, including any of the following: The first communication device sends a second request to a second terminal that needs to be located, and receives the second SL-PRS resource pool configuration of the first terminal fed back by the second terminal, wherein the second request includes an identifier of a third terminal with a known location; The first communication device sends a third request to the first terminal, and receives the SL-PRS resource pool configuration fed back by each of the first terminals.

13. The method according to claim 3 or 10, characterized in that: The SL-PRS resource pool type requirement includes any one of the following: resources for sending SL-PRS scheduled by the network, and resources for sending SL-PRS autonomously selected by the terminal.

14. The method according to claim 5, 6 or 11, characterized in that The optional range of the SL-PRS time-frequency resource and the first SL-PRS time-frequency resource requirement meet any of the following conditions: The optional range of the SL-PRS time-frequency resources includes the first SL-PRS time-frequency resource requirement; The first SL-PRS time-frequency resource requirement includes the optional range of the SL-PRS time-frequency resource; The optional range of SL-PRS time-frequency resources and the first SL-PRS time-frequency resource requirement do not include each other but have an intersection.

15. The method according to any one of claims 1 to 14, characterized in that The SL-PRS time-frequency resource requirement includes at least one of the following: SL-PRS period, SL-PRS bandwidth, SL-PRS comb structure size, SL-PRS repetition transmission times, and the number of symbols occupied by SL-PRS in each time slot.

16. The method according to any one of claims 1 to 15, characterized in that The first communication device obtains a positioning request, including: The first communication device receives the positioning request sent by the second terminal that needs to be positioned.

17. The method according to any one of claims 1 to 16, characterized in that The first communication device sending first information to the first terminal according to the positioning request includes: The first communication device sends a fourth request to the first terminal according to the positioning request, where the fourth request is used to request sending SL-PRS, and the fourth request includes the first information.

18. A method for determining a sidelink positioning reference signal SL-PRS transmission parameter, characterized in that: include: The first terminal receives first information sent by the first communication device; wherein the first information is determined according to a positioning request, and the positioning request includes at least one of the following: positioning service quality QoS requirement, an identifier of the first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first bandwidth part BWP identifier, and a first SL resource pool identifier; The first terminal determines the sending parameters of the SL-PRS according to the first information.

19. The method according to claim 18, characterized in that The first communication device is a location management function LMF network element or a positioning service terminal; The first terminal includes at least one of the following: a second terminal that needs to be located, and a third terminal with a known location.

20. The method according to claim 18 or 19, characterized in that Before the first terminal receives the first information sent by the first communication device, the method further includes: The first terminal receives a first SL-PRS resource pool configuration sent by a second communication device, where the first SL-PRS resource pool configuration is configured for the first terminal based on second information; The second information is determined based on the positioning request, and the second information includes at least one of the following: SL-PRS resource pool type requirement and second SL-PRS time-frequency resource requirement.

21. The method according to claim 20, characterized in that The first information includes the first SL-PRS time-frequency resource requirement; The first terminal determines, according to the first information, a sending parameter of the SL-PRS, including: The first terminal determines the SL-PRS sending parameters according to the first information and the first SL-PRS resource pool configuration.

22. The method according to claim 20 or 21, characterized in that The first SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, the first BWP identifier, the first SL resource pool identifier, the first SL-PRS sending priority, SL channel busy rate CBR range, and SL-PRS time-frequency resource optional range.

23. The method according to any one of claims 20 to 22, characterized in that The SL-PRS resource pool type requirement includes any one of the following: resources for sending SL-PRS scheduled by the network, and resources for sending SL-PRS autonomously selected by the terminal.

24. The method according to any one of claims 20 to 23, characterized in that The second communication device is a base station corresponding to a serving or camping cell of the first terminal; The second communication device is determined by the cell identifier indicated by the positioning request, or is determined by the first communication device according to the identifier of the first terminal.

25. The method according to claim 18 or 19, characterized in that Before the first terminal receives the first information sent by the first communication device, the method further includes any one of the following: The first terminal receives the second request sent by the first communication device, and feeds back a second SL-PRS resource pool configuration of a fourth terminal to the first communication device, wherein the first terminal is a second terminal that needs to be located, and the fourth terminal includes at least one of the following: the second terminal and a third terminal with a known location, and the second request includes an identifier of the third terminal; The first terminal receives the third request sent by the first communication device, and feeds back a second SL-PRS resource pool configuration to the first communication device, where the second SL-PRS resource pool configuration includes the SL-PRS resource pool configuration of each terminal in the first terminal.

26. The method according to claim 25, characterized in that The second SL-PRS resource pool configuration includes at least one of the following: SL-PRS resource pool type, the first BWP identifier, the first SL resource pool identifier, the second SL-PRS transmission priority, the SL CBR range, and the SL-PRS time-frequency resource optional range.

27. The method according to claim 22 or 26, characterized in that The optional range of the SL-PRS time-frequency resource and the first SL-PRS time-frequency resource requirement meet any of the following conditions: The optional range of the SL-PRS time-frequency resources includes the first SL-PRS time-frequency resource requirement; The first SL-PRS time-frequency resource requirement includes the optional range of the SL-PRS time-frequency resource; The optional range of SL-PRS time-frequency resources and the first SL-PRS time-frequency resource requirement do not include each other but have an intersection.

28. The method according to any one of claims 18 to 27, characterized in that The SL-PRS time-frequency resource requirement includes at least one of the following: SL-PRS period, SL-PRS bandwidth, SL-PRS comb structure size, SL-PRS repetition transmission times, and the number of symbols occupied by SL-PRS in each time slot.

29. The method according to any one of claims 18 to 28, characterized in that The first terminal determines, according to the first information, a sending parameter of the SL-PRS, including: The first terminal selects, according to the first information, a first resource pool corresponding to the first BWP identifier and the first SL resource pool identifier; The first terminal selects SL-PRS time-frequency resource parameters within the optional range of SL-PRS time-frequency resources associated with the first resource pool and the first SL-PRS time-frequency resource requirements based on the first SL-PRS transmission priority and the measured SL CBR to determine the SL-PRS transmission parameters.

30. The method according to any one of claims 18 to 29, characterized in that The first terminal receives first information sent by a first communication device, including: The first terminal receives a fourth request sent by the first communication device, where the fourth request is used to request sending an SL-PRS, and the fourth request includes the first information.

31. A device for determining a transmission parameter of a sidelink positioning reference signal SL-PRS, characterized in that: include: Get module and send module; The acquisition module is used to acquire a positioning request, wherein the positioning request includes at least one of the following: a positioning service quality QoS requirement, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; The sending module is used to send first information to the first terminal according to the positioning request obtained by the acquisition module, and the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first bandwidth part BWP identifier, and a first SL resource pool identifier; the first information is used to determine the sending parameters of the SL-PRS.

32. A device for determining a sidelink positioning reference signal SL-PRS transmission parameter, characterized in that: include: A receiving module and a determining module; The receiving module is used to receive first information sent by a first communication device; wherein the first information is determined according to a positioning request, and the positioning request includes at least one of the following: positioning service quality QoS requirement, an identifier of a first terminal, and an identifier of a service or resident cell of the first terminal; the first terminal is a terminal related to SL positioning; the first information includes at least one of the following: a first SL-PRS time-frequency resource requirement, a first SL-PRS sending priority, a first bandwidth part BWP identifier, and a first SL resource pool identifier; The determining module is used to determine the sending parameters of the SL-PRS according to the first information received by the receiving module.

33. A communication device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for determining the sidelink positioning reference signal SL-PRS transmission parameters according to any one of claims 1 to 17 are implemented.

34. A terminal, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for determining the sidelink positioning reference signal SL-PRS transmission parameters as described in any one of claims 18 to 30 are implemented.

35. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the method for determining the sidelink positioning reference signal SL-PRS transmission parameters as described in any one of claims 1 to 17, or implements the steps of the method for determining the SL-PRS transmission parameters as described in any one of claims 18 to 30.

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