Sidelink SL positioning authorization method, apparatus, and medium

Abstract

This disclosure provides a sidelink SL positioning authorization method, apparatus, and medium, and belongs to the field of communications technology. A sidelink SL positioning authorization method applicable to a base station includes receiving a first service authorization instruction to indicate terminal SL positioning authorization information transmitted from a first core network element.

Description

Technical Field

[0001] (Cross - reference to Related Applications) This disclosure claims priority based on Chinese Patent Application No. 202310729712.6 filed in China on June 19, 2023, the entire content of which is incorporated herein by reference.

[0002] This disclosure relates to the field of communication technologies, and particularly to a sidelink (SL) positioning permission method, apparatus, and medium.

Background Art

[0003] The positioning architecture in related technologies is mainly a positioning method based on the Uu interface. However, the positioning method based on the Uu interface cannot meet the scenario where the target user equipment (UE, also referred to as a terminal) is not within the network coverage. To obtain the position of the target UE, it is necessary to introduce sidelink (SL) positioning and support the above scenario by assisting positioning through the SL communication link between UEs.

[0004] Generally, there are two resource allocation modes for SL positioning. One is resource allocation by the network, and the other is autonomous resource allocation selection by the UE. When adopting the resource allocation mode by the network, the base station side needs to obtain the service authentication information for SL positioning. In related technologies, the base station side cannot recognize the SL positioning setting of the UE and cannot perform resource allocation for the UE, so there is a problem that SL positioning cannot be realized.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The technical problem to be solved by this disclosure is to provide a sidelink (SL) positioning permission method, apparatus, and medium that enable sidelink positioning to be realized.

Means for Solving the Problems

[0006] To solve the above technical problems, the embodiments of this disclosure provide the following technical means. Embodiments of this disclosure provide a sidelink SL positioning authorization method applicable to a terminal, the method of which The process includes the terminal transmitting first capability information to a first core network element, the first capability information indicating that the terminal supports SL positioning.

[0007] In some embodiments, the aforementioned capability information is further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0008] In some embodiments, the first capability information is transmitted after the terminal enters the effective area.

[0009] In some embodiments, the effective area is comprised of either the network side or the terminal.

[0010] In some embodiments, the size of the effective area is determined by the capability type of the terminal, the distance between the terminal and the base station, or the signal strength measured by the terminal.

[0011] Embodiments of this disclosure also provide a sidelink SL positioning authorization method applicable to a first core network element, the method is The first core network element receives first capability information transmitted from a terminal, wherein the first capability information indicates that the terminal supports SL positioning. The first core network element includes authenticating the first capability information of the terminal and transmitting a first service authorization instruction to the base station to instruct the terminal to provide SL positioning authorization information.

[0012] In some embodiments, the aforementioned capability information is further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0013] In some embodiments, the first capability information is transmitted after the terminal enters the effective area.

[0014] In some embodiments, the effective area is comprised of either the network side or the terminal.

[0015] In some embodiments, the size of the effective area is determined by the capability type of the terminal, or by the distance between the terminal and the base station, or by the signal strength measured by the terminal.

[0016] In some embodiments, the method further includes: the first core network element transmitting the location information of the effective area to the base station.

[0017] In some embodiments, the method further includes: when the terminal is permitted to perform SL positioning service, the first core network element further transmitting the permission type of the terminal to the target base station, and the permission type includes: an anchor terminal in SL positioning, a target terminal in SL positioning, a service terminal in SL positioning, an anchor terminal and a target terminal in SL positioning, an anchor terminal and a service terminal in SL positioning, a target terminal and a service terminal in SL positioning, including one of an anchor terminal, a target terminal, and a service terminal in SL positioning.

[0018] In some embodiments, the method further includes: when the terminal is permitted to perform SL positioning service, the first core network element transmitting at least one of service quality QoS parameters of the SL positioning service, inter-terminal SL communication QoS parameters for SL positioning, the aggregated maximum bit rate AMBR of terminals on the PC5 interface, and cross-RAT PC5 control permission to the target base station.

[0019] In some embodiments, the method further includes: When the terminal is authorized to perform SL positioning operations, and an NG interface switch occurs in the terminal, the following is further included: the terminal sends a switch request signal to the target base station, the switch request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0020] In some embodiments, the QoS parameters for the SL positioning service are: Absolute or relative horizontal positioning accuracy, Vertical coordinate request, Absolute or relative vertical positioning accuracy, Response time, and Includes at least one of the speed requests.

[0021] In some embodiments, the QoS parameters for the SL positioning service are further: 5G QoS identifier 5QI, Assignment and retention priority ARP, Maximum packet loss rate, QoS notification mechanism, and The guaranteed bitrate includes at least one of the guaranteed flow bitrate GFBR and the maximum flow bitrate MFBR for each guaranteed bitrate QoS flow.

[0022] Embodiments of this disclosure also provide a sidelink SL positioning authorization method applicable to a base station, the method is The base station receives a first service authorization instruction for indicating SL positioning authorization information of the terminal transmitted from a first core network element.

[0023] In some embodiments, the method described above is The further includes receiving location information of the effective area transmitted from the first core network element.

[0024] In some embodiments, the method described above is If the terminal is permitted to perform SL positioning, the following is transmitted from the first core network element: SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal aggregated maximum bitrate AMBR on the PC5 interface, and This further includes receiving at least one of the cross-RAT PC5 control permissions.

[0025] In some embodiments, the method described above is When the terminal is authorized to perform SL positioning, and an Xn switch occurs in the terminal, the following is further included: the terminal sends a switch request signal to the target base station, the switch request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0026] The embodiments of this disclosure also provide a sidelink SL positioning authorization device applicable to a terminal, which includes a transceiver and a processor. The transceiver is used to transmit first capability information to a first core network element, the first capability information instructing the terminal to support SL positioning.

[0027] The embodiments of this disclosure also provide a sidelink SL positioning authorization device applied to a first core network element, comprising a transceiver and a processor. The transceiver is used to receive first capability information transmitted from the terminal, the first capability information instructing the terminal to support SL positioning, The processor is used to authenticate the terminal's first capability information and to transmit a first service authorization instruction to the base station to instruct the terminal's SL positioning authorization information.

[0028] The embodiments of this disclosure also provide a sidelink SL positioning authorization device applicable to a base station, which includes a transceiver and a processor. The transceiver is used to receive a first service authorization instruction for specifying SL positioning authorization information of the terminal transmitted from the first core network element.

[0029] Embodiments of the present disclosure also provide a sidelink SL positioning authorization device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the sidelink SL positioning authorization method when executing the program.

[0030] Embodiments of the present disclosure also provide a computer-readable storage medium in which a computer program is stored, and when the program is executed by a processor, the steps of the Sidelink SL positioning authorization method or the steps of the Sidelink SL positioning authorization method are implemented. [Effects of the Invention]

[0031] The embodiments of this disclosure have the following beneficial effects. In the above solution, the terminal transmits its ability to support SL positioning to the first core network element, the first core network element determines whether the terminal is permitted to perform SL positioning based on its ability reported by the terminal, and if it determines that the terminal is permitted to perform SL positioning, it instructs the base station to provide the terminal's SL positioning permission information. In this way, the base station can obtain authentication instructions for the terminal from the core network, know whether the participating terminal is qualified to receive SL positioning settings, and subsequently allocate resources to the terminal, thereby enabling SL positioning. [Brief explanation of the drawing]

[0032] [Figure 1] This is a schematic flowchart of the positioning scheme for related technologies. [Figure 2] This is a schematic diagram of a network coverage scenario (part one). [Figure 3] This is a schematic diagram of the network coverage scenario (part two). [Figure 4] This is a schematic diagram of a network coverage scenario (part three). [Figure 5] This is a schematic flowchart of the sidelink SL positioning authorization method according to an embodiment of the present disclosure (Part 1). [Figure 6] This is a schematic flowchart of the sidelink SL positioning authorization method according to an embodiment of the present disclosure (part two). [Figure 7] This is a schematic flowchart of the sidelink SL positioning authorization method according to an embodiment of the present disclosure (part three). [Figure 8] This is a schematic diagram of the configuration of a sidelink SL positioning authorization device according to an embodiment of the present disclosure. [Figure 9] This is a schematic diagram of the configuration of a sidelink SL positioning authorization device according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0033] To further clarify the technical problems, technical means, and advantages that the embodiments of this disclosure aim to solve, they will be described in detail below with reference to the drawings and specific embodiments.

[0034] In the relevant positioning technology architecture, the Access and Mobility Management Function (AMF) decides to initiate a positioning service for a target UE either by receiving a positioning request for a target UE from another entity (e.g., a Gateway Mobile Location Centre (GMLC) or a User Equipment (UE)) or after receiving an emergency call from a UE. Subsequently, the AMF sends a positioning service request to the Location Management Function (LMF), which processes the request and either measures the UE's location or transmits auxiliary information to assist in the positioning or measurement of the UE. After obtaining the positioning result, the LMF sends the result back to the AMF. If the positioning service was not initiated by the AMF, the AMF returns the positioning result to the entity that initiated the positioning service. The specific flow is shown in Figure 1.

[0035] Currently, positioning for V2X (Vehicle-to-Everything) and positioning for public safety are among the main positioning use cases for 5G. Here, V2X and positioning for public safety mainly involve three network coverage scenarios: in-coverage (IC), out-of-coverage (OOC), and partial coverage (PC). The in-coverage scenario means that all UEs are within network coverage. The partial coverage scenario means that at least one UE is under network coverage and the remaining UEs are outside of network coverage. The out-of-coverage scenario means that all UEs are outside of network coverage. The three coverage scenarios are shown in Figures 2 to 4. Here, Figure 2 is a schematic diagram of the in-coverage scenario, Figure 3 is a schematic diagram of the partial coverage scenario, and Figure 4 is a schematic diagram of the out-of-coverage scenario.

[0036] Here, the communication interface between the UE and the base station is the Uu interface, and the communication interface between two UEs is the PC5 interface. The Uu interface, the PC5 interface, and combinations of the Uu and PC5 interfaces constitute the radio link in positioning. The Uu interface is used in in-coverage and partial-coverage scenarios, and the PC5 interface can be used in all three of the above scenarios.

[0037] Currently, there is no mechanism to support the core network notifying base stations of service authentication instructions and parameters related to SL positioning. If a base station cannot obtain authentication instructions for a UE from the core network, it cannot know whether the participating UE is qualified to receive SL positioning settings, and therefore cannot allocate resources to the UE, thus preventing SL positioning from being achieved. If a base station cannot obtain the UE's SL positioning service quality (QoS) and SL positioning transmission QoS parameters from the core network, it cannot obtain the priority of data operations and cannot perform more granular scheduling management for data operations.

[0038] Embodiments of this disclosure provide a sidelink SL positioning authorization method, apparatus, and medium that enable sidelink positioning.

[0039] Embodiments of this disclosure provide a sidelink SL positioning authorization method applicable to a terminal, the method comprising the following steps, as shown in Figure 5.

[0040] In step 101, the terminal transmits first capability information to the first core network element, and the first capability information instructs the terminal to support SL positioning.

[0041] In this embodiment, the terminal transmits its ability to support SL positioning to the first core network element. Based on the capability reported by the terminal, the first core network element determines whether the terminal is permitted to perform SL positioning, and if it determines that the terminal is permitted to perform SL positioning, it can instruct the base station to provide the terminal's SL positioning permission information. This allows the base station to obtain authentication instructions for the terminal from the core network, to know whether the participating terminal is qualified to receive SL positioning settings, and to subsequently allocate resources to the terminal, thereby enabling SL positioning.

[0042] In this embodiment, when a UE initiates a registration request during the registration phase, the UE may include information in the registration request message indicating its ability to support SL positioning via transparent transmission. The first capability information may be included in the 5th generation mobile communication system mobility management (5GMM) capability information elements (IE), or in the terminal UE mobility management (MM) core network capability IE, or in a new IE, within the registration positioning request message.

[0043] In some embodiments, in addition to including information that the UE supports SL positioning, the first capability information further includes: The aforementioned terminal will support operation as an anchor terminal (anchor UE) in SL positioning. The aforementioned terminal will support operation as a target terminal (target UE) in SL positioning. The aforementioned terminal supports operation as a service terminal (server UE) in SL positioning (i.e., one UE selected from among multiple UEs, which has similar functionality to LMF and must have PC5 connectivity with all UEs). The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0044] This allows the first core network element to determine, based on first capability information, that the UE is authorized to play a role in SL positioning, in order to assist the base station in allocating resources to the terminal when the terminal decides to be authorized to perform SL positioning.

[0045] In some embodiments, the first capability information is transmitted after the terminal enters the valid area. Within this valid area, the SL capability reported by the terminal does not change. If the terminal moves beyond this valid area, the UE can restart authentication renewal to the network side and report the SL capability that the UE supports.

[0046] In some embodiments, the effective area is comprised of the network side (which may be a base station or core network element) or the terminal. When the effective area is comprised of a core network element, the extent of the effective area may be an area defined by the core network element, which may be characterized as a circular area centered on the UE's current location with a radius defined by the core network element, or as an area centered on the base station's current location. This effective area may be set to a uniform size for all UEs, or different sized effective areas may be set for terminals of different capability types, depending on the terminal's different capabilities. If a UE moves outside the current effective area, an authentication update is triggered, and the SL capabilities supported by the UE are reported. If a UE previously reported its capabilities as an anchor UE, but can no longer function as an anchor UE due to a change in location or increased distance from other UEs, the UE must report to the core network element that it supports acting as a target UE. The core network element transmits the effective area location information to the base station. This location information may be the effective radius of the effective area (centered on the UE or the base station) or the coordinate information of the effective area (centered on the base station).

[0047] If the effective area is comprised of a UE, the size of this effective area may be determined based on the UE's position coordinates and distance from the base station. If the UE detects that it has moved outside the range of a particular effective area, the UE can proactively initiate authentication renewal and report to the network side the SL capabilities that the UE supports. The size of the effective area may also be determined by the signal strength measured by the terminal, where the measured quantity includes at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal-to-noise and interference ratio (SINR), and Received Signal Strength Indication (RSSI).

[0048] Embodiments of this disclosure also provide a sidelink SL positioning authorization method applicable to a first core network element, the method comprising the following steps 201-202, as shown in Figure 6.

[0049] In step 201, the first core network element receives first capability information transmitted from the terminal, and the first capability information indicates that the terminal supports SL positioning.

[0050] In step 202, the first core network element authenticates the first capability information of the terminal and transmits a first service authorization instruction to the base station to instruct the terminal to provide SL positioning authorization information.

[0051] The first business authorization instruction may indicate whether the terminal is authorized or not to perform SL positioning operations.

[0052] In this embodiment, the terminal transmits its ability to support SL positioning to the first core network element. Based on the capabilities reported by the terminal, the first core network element determines whether the terminal is authorized to perform SL positioning operations, and if it determines that the terminal is authorized to perform SL positioning operations, it can instruct the base station to provide the terminal's SL positioning authorization information. This allows the base station to obtain authentication instructions for the terminal from the core network, to know whether the participating terminal is qualified to receive SL positioning settings, and to subsequently allocate resources to the terminal, thereby enabling SL positioning.

[0053] In this embodiment, when the UE initiates a registration request during the registration phase, the UE may include its capability to support SL positioning via transparent transmission in the registration request message. The first capability information may be included in the mobility management capability information element 5GMM capability IE, or the terminal mobility management core network capability information element UE MM Core Network Capability IE, or in a new IE in the registration positioning request message.

[0054] Here, the first core network element may be an AMF, which, after receiving a registration request message from the UE via transparent transmission, determines whether it can authorize the UE to perform SL positioning based on the SL positioning data in the user subscription information provided by the Unified Data Management (UDM) and the capabilities reported by the UE. Simultaneously, the AMF stores the authorization information and transmits an authorization instruction to the base station. This authorization instruction may be "the UE is authorized to perform SL positioning services," or "the SL positioning services are authorized," or "the UE is not authorized to perform SL positioning services," or "the SL positioning services are not authorized."

[0055] In some embodiments, the aforementioned capability information is further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0056] This allows the first core network element to determine, based on first capability information, that the UE is authorized to play a role in SL positioning, in order to assist the base station in allocating resources to the terminal when the terminal decides to be authorized to perform SL positioning.

[0057] Within this valid area, the SL capability reported by the terminal does not change. If the valid area is exceeded, the UE can restart authentication renewal to the network side and report the SL capability that the UE supports.

[0058] In some embodiments, the effective area is comprised of the network side (which may be a base station or core network element) or the terminal. When the effective area is comprised of a core network element, the extent of the effective area may be an area defined by the core network element, which may be characterized as a circular area centered on the UE's current location with a radius defined by the core network element, or as an area centered on the base station's current location. This effective area may be set to a uniform size for all UEs, or different sized effective areas may be set for terminals of different capability types, depending on the terminal's different capabilities. If a UE moves outside the current effective area, an authentication update is triggered, and the SL capabilities supported by the UE are reported. If a UE previously reported its capabilities as an anchor UE, but can no longer function as an anchor UE due to a change in location or increased distance from other UEs, the UE must report to the core network element that it supports acting as a target terminal. The core network element transmits the effective area location information to the base station. This location information may be the effective radius of the effective area (centered on the UE or the base station) or the coordinate information of the effective area (centered on the base station).

[0059] If the effective area is defined by the UE, the size of this effective area may be determined based on the UE's position coordinates and distance from the base station. Within this effective area, the SL capability reported by the terminal does not change. If the terminal moves beyond the effective area, the UE can restart the authentication renewal process to the network and report the SL capability it supports. The size of the effective area may also be determined by the signal strength measured by the terminal, where the measured quantity includes at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal-to-noise and interference ratio (SINR), and Received Signal Strength Indication (RSSI).

[0060] In some embodiments, the method described above is If the terminal is authorized to perform SL positioning operations, the first core network element further includes transmitting the authorization type of the terminal to the target base station, wherein the authorization type is Anchor terminal in SL positioning, Target terminal in SL positioning, Service terminals in SL positioning, Anchor terminal and target terminal in SL positioning, Anchor terminals and service terminals in SL positioning, Target terminal and service terminal in SL positioning, Includes one of the anchor terminal, target terminal, and service terminal in SL positioning.

[0061] In this embodiment, the first core network element may determine the authorization type of the terminal before transmitting the authorization type of the terminal.

[0062] In some embodiments, the method described above is If the terminal is not authorized to perform SL positioning operations, the first core network element further includes sending an instructional message to the target base station indicating that the terminal does not support SL positioning operations.

[0063] In some embodiments, the method described above is When the terminal is authorized to perform SL positioning operations, the first core network element, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The Aggregate Maximum Bit Rate (AMBR) on the PC5 interface, and Cross-Radio Access Technology (cross-RAT) further includes transmitting at least one of the PC5 control permissions to the target base station.

[0064] Sidelink (SL) communication is direct communication between terminals via the PC5 interface. SL positioning is based on Sidelink signals transmitted between terminals via the PC5 interface. Inter-terminal SL communication in SL positioning is the transmission of SL signals between terminals via the PC5 interface, i.e., the transmission of SL positioning signals. The inter-terminal SL communication QoS parameters for SL positioning described above may also be called SL positioning transmission QoS parameters. These parameters can be used by the base station to allocate appropriate resources between terminals supporting SL positioning.

[0065] In some embodiments, the QoS parameters for the SL positioning service are: Absolute or relative horizontal positioning accuracy, Vertical coordinate request, Absolute or relative vertical positioning accuracy, Response time, and Includes at least one of the speed requests.

[0066] In some embodiments, the QoS parameters for the SL positioning service are further: 5G QoS Identifier (5QI), Address Resolution Protocol (ARP), which prioritizes allocation and retention of addresses. Maximum packet loss rate, QoS notification mechanism, and The Guaranteed Bit Rate (GBR) includes at least one of the Guaranteed Flow Bit Rate (GFBR) and Maximum Flow Bit Rate (MFBR) for each QoS flow.

[0067] Based on the SL positioning QoS parameters transmitted by the Policy Control Function (PCF), the AMF can transmit SL QoS parameters to the base station for use in base station positioning. The SL QoS parameters include at least one of the following: absolute or relative horizontal positioning accuracy, vertical coordinate requirements (i.e., whether vertical coordinates need to be introduced), absolute or relative vertical positioning accuracy, response time, and velocity requirements (i.e., whether velocity needs to be introduced). Furthermore, they include at least one of the following: 5QI, ARP, maximum packet loss rate, QoS notification mechanism, and guaranteed bit rate (GBR), including guaranteed flow bit rate (GFBR) and maximum flow bit rate (MFBR) per QoS flow. After receiving the QoS parameters, the base station can determine which positioning tasks have high-precision requirements, are latency-sensitive, or require a guaranteed packet loss rate, allowing the base station to prioritize such tasks.

[0068] Furthermore, based on user subscription information transmitted by the UDM, the AMF can also transmit to the base station the UE-AMBR on the UE's PC5 interface, i.e., the aggregated bit rate that all non-Guaranteed Bit Rate (non-GBR) QoS flows within a single UE on the PC5 interface are expected to provide. In addition, the AMF can transmit cross-RAT PC5 control authorization to the base station, which is used for the base station to manage resources for the content transmitted on the UE's SL PC5. This authorization instruction indicates whether, in network resource allocation mode, a Long Term Evolution (LTE) base station has the ability to schedule content transmitted on LTE PC5 and / or New Radio (NR) PC5 interfaces within its coverage, and whether an NR base station has the ability to schedule content transmitted on LTE PC5 and / or NR PC5 interfaces within its coverage.

[0069] In some embodiments, the method described above is When the terminal is authorized to perform SL positioning operations, and a next-generation (NG) interface switch occurs at the terminal, the method further includes sending a switch request signal to the target base station, the switch request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0070] In this embodiment, in a scenario where an NG switch occurs in the UE, the AMF (referring to the target AMF in the case of inter-AMF switching) must send a switch request signal to the target base station. This switch request signal includes at least one of the following: a service authorization message, valid area information, UE-AMBR on the PC5 interface, cross-RAT PC5 control authorization, and SL positioning QoS parameters. This allows the target base station to know whether the participating terminals are eligible to receive SL positioning settings, enabling the base station to subsequently allocate resources to the terminals and ultimately achieve SL positioning.

[0071] Embodiments of this disclosure also provide a sidelink SL positioning authorization method applicable to a base station, the method comprising the following step 301, as shown in Figure 7.

[0072] In step 301, the base station receives a first service authorization instruction to specify the SL positioning authorization information of the terminal transmitted from the first core network element.

[0073] In this embodiment, the base station can obtain authentication instructions for terminals from the core network, the base station can know whether the participating terminal is qualified to receive SL positioning settings, the base station can subsequently allocate resources to the terminal, and ultimately realize SL positioning.

[0074] A terminal may not be authorized to perform SL positioning operations, and the first operation authorization instruction may indicate whether the terminal is authorized or not. If a terminal is not authorized to perform SL positioning operations, the base station initiates a process to prevent the terminal from accessing SL positioning operations.

[0075] In some embodiments, the method described above is The further includes receiving location information of the effective area transmitted from the first core network element.

[0076] In some embodiments, the effective area is configured by the network or by the terminal. When the effective area is configured by the core network element, the extent of the effective area may be an area defined by the core network element, which may be characterized as a circular area centered on the UE's current location with a radius defined by the core network element, or as an area centered on the base station's current location. This effective area may be set to a uniform size for all UEs, or different sized effective areas may be set for terminals of different capability types, depending on the terminal's different capabilities. If the UE moves outside the current effective area, an authentication update is triggered, and the SL capabilities supported by the UE are reported. If the UE previously reported its capabilities as an anchor UE, but can no longer function as an anchor UE due to a change in location or increased distance from other UEs, the UE must report to the core network element that it supports acting as a target terminal. The core network element transmits the effective area location information to the base station. This location information may be the effective radius of the effective area (centered on the UE or the base station) or the coordinate information of the effective area (centered on the base station).

[0077] If the effective area is defined by the UE, the size of this effective area may be determined based on the UE's position coordinates and distance from the base station. Within this effective area, the SL capability reported by the terminal does not change. If the terminal moves beyond the effective area, the UE can restart the authentication renewal process to the network and report the SL capability it supports. The size of the effective area may also be determined by the signal strength measured by the terminal, where the measured quantity includes at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), signal-to-noise and interference ratio (SINR), and Received Signal Strength Indication (RSSI).

[0078] In some embodiments, the method described above is If the terminal is permitted to perform SL positioning, the following is transmitted from the first core network element: SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal aggregated maximum bitrate AMBR on the PC5 interface, and This further includes receiving at least one of the cross-RAT PC5 control permissions.

[0079] After obtaining QoS parameters, the base station can determine which positioning services have high-precision requirements, are latency-sensitive, or require guaranteed packet loss rates, allowing it to prioritize such services. After obtaining the terminal aggregated maximum bitrate AMBR on the PC5 interface, the base station can allocate resources to terminals based on the UE-AMBR. Cross-RAT PC5 control authorization is used for the base station to manage resources for transmission content on the UE's SL PC5. This authorization indicates whether, in network resource allocation mode, a Long Term Evolution (LTE) base station has the ability to schedule content transmitted on LTE PC5 and / or NR PC5 interfaces within its coverage, and whether an NR base station has the ability to schedule content transmitted on LTE PC5 and / or NR PC5 interfaces within its coverage.

[0080] In some embodiments, the method described above is When the terminal is authorized to perform SL positioning, and an Xn switch occurs in the terminal, the following is further included: the terminal sends a switch request signal to the target base station, the switch request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0081] In this embodiment, in a scenario where an Xn switchover occurs in the UE, the source base station must send a switchover request signal to the target base station, which includes at least one of the following: a service authorization message, valid area information, UE-AMBR on the PC5 interface, cross-RAT PC5 control authorization, and SL positioning QoS parameters. This allows the target base station to know whether the participating terminal is eligible to receive the SL positioning settings, enabling the base station to subsequently allocate resources to the terminal and ultimately achieve SL positioning.

[0082] The embodiments of this disclosure also provide a sidelink SL positioning authorization device applied to a terminal, which, as shown in Figure 8, includes a transceiver 51 and a processor 52. The transceiver 51 is used to transmit first capability information to the first core network element, which instructs the terminal to support SL positioning.

[0083] In some embodiments, the aforementioned capability information is further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0084] In some embodiments, the first capability information is transmitted after the terminal enters the effective area.

[0085] In some embodiments, the effective area is comprised of either the network side or the terminal.

[0086] In some embodiments, the size of the effective area is determined by the capability type of the terminal, the distance between the terminal and the base station, or the signal strength measured by the terminal.

[0087] Embodiments of this disclosure also provide a sidelink SL positioning authorization device applied to a first core network element, which, as shown in Figure 8, includes a transceiver 51 and a processor 52. The transceiver 51 is used to receive first capability information transmitted from the terminal, the first capability information instructs the terminal to support SL positioning, The processor 52 is used to authenticate the terminal's first capability information and to transmit a first service authorization instruction to the base station to instruct the terminal's SL positioning authorization information.

[0088] In some embodiments, the aforementioned capability information is further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. This includes supporting the aforementioned terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

[0089] In some embodiments, the first capability information is transmitted after the terminal enters the effective area.

[0090] In some embodiments, the effective area is comprised of either the network side or the terminal.

[0091] In some embodiments, the size of the effective area is determined by the capability type of the terminal, the distance between the terminal and the base station, or the signal strength measured by the terminal.

[0092] In some embodiments, the transceiver 51 is further used to transmit location information of the effective area to a base station.

[0093] In some embodiments, the transceiver 51 is further used to transmit the authorization type of the terminal to the target base station when the terminal is authorized to perform SL positioning operations, and the authorization type is Anchor terminal in SL positioning, Target terminal in SL positioning, Service terminals in SL positioning, Anchor terminal and target terminal in SL positioning, Anchor terminals and service terminals in SL positioning, Target terminal and service terminal in SL positioning, Includes one of the anchor terminal, target terminal, and service terminal in SL positioning.

[0094] In some embodiments, if the terminal is authorized to perform SL positioning operations, the transceiver 51 further: SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal aggregated maximum bitrate AMBR on the PC5 interface, and It is used to transmit at least one of the cross-RAT PC5 control permissions to the base station.

[0095] In some embodiments, when the first core network element permits SL positioning to the terminal, the transceiver 51 is further used to send a switching request signal to the target base station when an NG interface switch occurs at the terminal, and the switching request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0096] In some embodiments, the QoS parameters for the SL positioning service are: Absolute or relative horizontal positioning accuracy, Vertical coordinate request, Absolute or relative vertical positioning accuracy, Response time, and Includes at least one of the speed requests.

[0097] In some embodiments, the QoS parameters for the SL positioning service are further: 5G QoS identifier 5QI, Assignment and retention priority ARP, Maximum packet loss rate, QoS notification mechanism, and The guaranteed bitrate includes at least one of the guaranteed flow bitrate GFBR and the maximum flow bitrate MFBR for each guaranteed bitrate QoS flow.

[0098] Embodiments of this disclosure also provide a sidelink SL positioning authorization device applicable to a base station, which, as shown in Figure 8, includes a transceiver 51 and a processor 52. The transceiver 51 is used to receive a first service authorization instruction for specifying SL positioning authorization information of the terminal transmitted from the first core network element.

[0099] In some embodiments, the transceiver 51 is further used to receive location information of the effective area transmitted from the first core network element.

[0100] In some embodiments, when the terminal is permitted to perform SL positioning, the transceiver 51 further transmits from the first core network element: SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal aggregated maximum bitrate AMBR on the PC5 interface, and Used to receive at least one of the cross-RAT PC5 control authorizations.

[0101] In some embodiments, when the terminal is permitted to perform SL positioning, the transceiver 51 is further used to transmit a switching request signal to the target base station when an Xn switch occurs in the terminal, and the switching request signal includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The terminal AMBR on the PC5 interface, and It includes at least one of the cross-RAT PC5 control permissions.

[0102] Embodiments of the present disclosure also provide a sidelink SL positioning authorization device, as shown in Figure 9, which includes a memory 61, a processor 62, and a computer program stored in the memory 61 and executable on the processor 62, the processor 62 executing the program to realize the steps of the sidelink SL positioning authorization method.

[0103] Embodiments of the present disclosure also provide a computer-readable storage medium in which a computer program is stored, and when the program is executed by a processor, the steps of the Sidelink SL positioning authorization method or the steps of the Sidelink SL positioning authorization method are implemented.

[0104] Computer-readable media include persistent and non-persistent, removable and non-removable media, and information storage can be achieved by any method or technique. Information may be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, Phase-change Memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash Memory or other memory technologies, Read-Only Optical Discs, Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), Digital Video Discs (DVDs) or other optical storage, Magnetic Tape Cartridges, Tape Disk Storage or other Magnetic Storage, or any other non-transmission media that can be used to store information accessible by a detectable terminal device or a computeable detectable terminal device. According to the definitions herein, computer-readable media does not include transient computer-readable media such as modulated data signals and carrier waves.

[0105] The above describes preferred embodiments of the present disclosure, and it should be noted that several improvements and refinements can be made by those in the general art without departing from the principles of the present disclosure, which should be considered to fall within the scope of the present disclosure.

Claims

1. A side-link SL positioning permission method applicable to a terminal, A method for granting SL positioning permission, comprising the terminal transmitting first capability information to a first core network element, wherein the first capability information instructs the terminal to support SL positioning.

2. The preceding 1 capability information further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. The method according to claim 1, further comprising supporting the terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

3. The method according to claim 1, wherein the first capability information is transmitted after the terminal enters the effective area.

4. The method according to claim 3, wherein the effective area is configured by the network side or by the terminal.

5. The method according to claim 4, wherein the size of the effective area is determined by the capability type of the terminal, or by the distance between the terminal and the base station, or by the signal strength measured by the terminal.

6. A sidelink SL positioning authorization method applied to a first core network element, The first core network element receives first capability information transmitted from a terminal, wherein the first capability information indicates that the terminal supports SL positioning. A method for granting SL positioning authorization, comprising the first core network element authenticating first capability information of the terminal and transmitting a first service authorization instruction to a base station to instruct the terminal to grant SL positioning authorization information.

7. The preceding 1 capability information further, The aforementioned terminal supports operation as an anchor terminal in SL positioning. The aforementioned terminal supports operation as a target terminal in SL positioning. The aforementioned terminal supports operation as a service terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and a target terminal in SL positioning. The aforementioned terminal supports operation as an anchor terminal and service terminal in SL positioning. The aforementioned terminal supports operation as a target terminal and service terminal in SL positioning. The method according to claim 6, further comprising supporting the terminal to operate as an anchor terminal, target terminal, and service terminal in SL positioning.

8. The method according to claim 6, wherein the first capability information is transmitted after the terminal enters the effective area.

9. The method according to claim 8, wherein the effective area is configured by the network side or by the terminal.

10. The method according to claim 8, wherein the size of the effective area is determined by the capability type of the terminal, or by the distance between the terminal and the base station, or by the signal strength measured by the terminal.

11. The method according to claim 8, further comprising the first core network element transmitting location information of the effective area to a base station.

12. If the terminal is authorized to perform SL positioning operations, the first core network element further includes transmitting the authorization type of the terminal to the target base station, wherein the authorization type is Anchor terminal in SL positioning, Target terminal in SL positioning, Service terminals in SL positioning, Anchor terminal and target terminal in SL positioning, Anchor terminals and service terminals in SL positioning, Target terminal and service terminal in SL positioning, The method according to claim 6, comprising one of an anchor terminal, a target terminal, and a service terminal in SL positioning.

13. When the terminal is authorized to perform SL positioning operations, the first core network element, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The maximum bitrate AMBR for terminal aggregation on the PC5 interface, and The method according to claim 6, further comprising transmitting at least one of the multi-radio access technology cross-RAT PC5 control permissions to a target base station.

14. If the terminal is authorized to perform SL positioning operations, and an NG interface switch occurs in the terminal, the further includes sending a switch request to the target base station, wherein the switch request includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. Terminal AMBR on the PC5 interface, and The method according to claim 6, further comprising at least one of the cross-RAT PC5 control permissions.

15. The QoS parameters for the aforementioned SL positioning service are: Absolute or relative horizontal positioning accuracy, Vertical coordinate request, Absolute or relative vertical positioning accuracy, Response time, and The method according to claim 13 or 14, comprising at least one of the speed requirements.

16. The QoS parameters for the aforementioned SL positioning service are further: 5G QoS identifier 5QI, Allocation and retention priority ARP, Maximum packet loss rate, QoS notification mechanism, and The method according to claim 15, comprising at least one of the guaranteed flow bitrate GFBR and the maximum flow bitrate MFBR for each guaranteed bitrate QoS flow.

17. A sidelink SL positioning authorization method applicable to a base station, A method for granting SL positioning authorization, comprising a base station receiving a first service authorization instruction for instructing terminal SL positioning authorization information transmitted from a first core network element.

18. The method according to claim 17, further comprising receiving location information of an effective area transmitted from the first core network element.

19. When the terminal is permitted to perform SL positioning, the following is transmitted from the first core network element: SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. The maximum bitrate AMBR for terminal aggregation on the PC5 interface, and The method according to claim 17, further comprising receiving at least one of the cross-RAT PC5 control permissions.

20. When the terminal is permitted to perform SL positioning, and an Xn switch occurs in the terminal, the method further includes sending a switch request to the target base station, wherein the switch request includes: Business permit instructions; Location information of the effective area, SL positioning service quality QoS parameters, Terminal-to-terminal SL communication QoS parameters for SL positioning. Terminal AMBR on the PC5 interface, and The method according to claim 17, further comprising at least one of the cross-RAT PC5 control permissions.

21. A sidelink SL positioning authorization device applicable to a terminal, comprising a transceiver and a processor, The transceiver is used to transmit first capability information to a first core network element, the first capability information being an SL positioning authorization device that instructs the terminal to support SL positioning.

22. A sidelink SL positioning authorization device applied to a first core network element, comprising a transceiver and a processor, The transceiver is used to receive first capability information transmitted from the terminal, the first capability information instructing the terminal to support SL positioning, The processor is used to authenticate the first capability information of the terminal and to transmit a first service authorization instruction to the base station to instruct the terminal on SL positioning authorization information, and is an SL positioning authorization device.

23. A sidelink SL positioning authorization device applicable to a base station, comprising a transceiver and a processor, The transceiver is an SL positioning authorization device used to receive a first service authorization instruction for instructing terminal SL positioning authorization information transmitted from a first core network element.

24. A sidelink SL positioning authorization device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the sidelink SL positioning authorization method described in any one of claims 1 to 20 are realized by the SL positioning authorization device.

25. A computer-readable storage medium in which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the sidelink SL positioning authorization method described in any one of claims 1 to 20 are realized.

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