Bylink SL positioning authentication method and device and medium

Abstract

The invention provides a side link SL positioning authentication method and device and a medium, and belongs to the technical field of communication. The sidelink SL positioning authentication method is applied to a base station, and comprises the following steps: receiving a first service authorization indication sent by a first core network element, and indicating SL positioning authorization information of a terminal. According to the technical scheme of the invention, side link positioning can be realized.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a sidelink SL positioning authentication method, device and medium. Background Art

[0002] The existing positioning architecture is mainly based on the Uu interface positioning solution, but the Uu interface positioning solution cannot meet the scenario where the target UE (User Equipment) is not in network coverage. In order to obtain the location of the target UE, it is necessary to introduce SL (Sidelink) positioning, and assist positioning through the SL communication link between UEs to support the above scenario.

[0003] There are usually two resource allocation modes in SL positioning, one is that resource allocation is arranged by the network, and the other is that the UE independently selects resource allocation. If the mode of network-arranged resource allocation is adopted, the base station side needs to obtain the service authentication information of SL positioning. In the prior art, the base station side cannot know the SL positioning configuration of the UE and cannot allocate resources to the UE, resulting in the inability to implement SL positioning. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sidelink SL positioning authentication method, device and medium, which can realize sidelink positioning.

[0005] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0006] A sidelink SL positioning authentication method, applied to a terminal, comprising:

[0007] The terminal sends first capability information to the first core network element, where the first capability information indicates that the terminal supports SL positioning.

[0008] In some embodiments, the first capability information further includes any one of the following:

[0009] The terminal supports being an anchor terminal in SL positioning;

[0010] The terminal supports being a target terminal in SL positioning;

[0011] The terminal supports serving as a service terminal in SL positioning;

[0012] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0013] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0014] The terminal supports being a target terminal and a service terminal in SL positioning;

[0015] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0016] In some embodiments, the first capability information is sent after the terminal enters a valid area.

[0017] In some embodiments, the valid area is a network side configuration or the terminal configuration.

[0018] 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 a base station, or by the signal strength measured by the terminal.

[0019] The embodiment of the present invention further provides a sidelink SL positioning authentication method, which is applied to a first core network element, including:

[0020] The first core network element receives first capability information sent by the terminal, where the first capability information indicates that the terminal supports SL positioning;

[0021] The first core network element authenticates the first capability information of the terminal and sends a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

[0022] In some embodiments, the first capability information further includes any one of the following:

[0023] The terminal supports being an anchor terminal in SL positioning;

[0024] The terminal supports being a target terminal in SL positioning;

[0025] The terminal supports serving as a service terminal in SL positioning;

[0026] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0027] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0028] The terminal supports being a target terminal and a service terminal in SL positioning;

[0029] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0030] In some embodiments, the first capability information is sent after the terminal enters a valid area.

[0031] In some embodiments, the valid area is a network side configuration or the terminal configuration.

[0032] 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 a base station, or by the signal strength measured by the terminal.

[0033] In some embodiments, the method further comprises:

[0034] The first core network element sends the location information of the valid area to the base station.

[0035] In some embodiments, the method further comprises:

[0036] In the case where the terminal is authorized for the SL positioning service, the first core network element sends the authorization type of the terminal to the target base station, where the authorization type includes any one of the following:

[0037] Anchor terminal in SL positioning;

[0038] Target terminal in SL positioning;

[0039] Service terminal in SL positioning;

[0040] Anchor terminal and target terminal in SL positioning;

[0041] Anchor terminal and service terminal in SL positioning;

[0042] Target terminal and service terminal in SL positioning;

[0043] Anchor terminal, target terminal and service terminal in SL positioning.

[0044] In some embodiments, the method further comprises:

[0045] When the terminal is authorized for the SL positioning service, the first core network element sends at least one of the following to the target base station:

[0046] Quality of service (QoS) parameters for SL positioning services;

[0047] QoS parameters for inter-terminal SL communication used for SL positioning; terminal aggregate maximum bit rate AMBR on PC5 interface;

[0048] Cross-RAT PC5 control authorization.

[0049] In some embodiments, the method further comprises:

[0050] In the case where the terminal is authorized for the SL positioning service, when the terminal undergoes NG interface switching, a switching request signaling is sent to the target base station, where the switching request signaling carries at least one of the following:

[0051] Business authorization instructions;

[0052] Location information of the effective area;

[0053] Quality of service (QoS) parameters for SL positioning services;

[0054] QoS parameters for inter-terminal SL communication used for SL positioning;

[0055] Terminal AMBR on PC5 interface;

[0056] Cross-RAT PC5 control authorization.

[0057] In some embodiments, the QoS parameters of the SL positioning service include at least one of the following:

[0058] Absolute or relative horizontal positioning accuracy;

[0059] Vertical coordinate request;

[0060] Absolute or relative vertical positioning accuracy;

[0061] Response time;

[0062] Speed ​​request.

[0063] In some embodiments, the QoS parameters of the SL positioning service further include at least one of the following:

[0064] 5G QoS identifier 5QI;

[0065] Allocate and occupy priority ARP;

[0066] Maximum packet loss rate;

[0067] QoS notification mechanism;

[0068] For each guaranteed bit rate QoS flow the reserved flow bit rate GFBR and the maximum flow bit rate MFBR.

[0069] The embodiment of the present invention further provides a sidelink SL positioning authentication method, which is applied to a base station, including:

[0070] The base station receives a first service authorization indication sent by a first core network network element, indicating the SL positioning authorization information of the terminal.

[0071] In some embodiments, the method further comprises:

[0072] Receive location information of the valid area sent by the first core network network element.

[0073] In some embodiments, the method further comprises:

[0074] When the terminal is authorized for SL positioning, receiving at least one of the following items sent by the first core network element:

[0075] Quality of service (QoS) parameters for SL positioning services;

[0076] QoS parameters for inter-terminal SL communication used for SL positioning;

[0077] The terminal aggregate maximum bit rate AMBR on the PC5 interface;

[0078] Cross-RAT PC5 control authorization.

[0079] In some embodiments, the method further comprises:

[0080] In the case where the terminal is authorized for SL positioning, when Xn handover occurs in the terminal, a handover request signaling is sent to the target base station, and the handover request signaling carries at least one of the following:

[0081] Business authorization instructions;

[0082] Location information of the effective area;

[0083] Quality of service (QoS) parameters for SL positioning services;

[0084] QoS parameters for inter-terminal SL communication used for SL positioning;

[0085] Terminal AMBR on PC5 interface;

[0086] Cross-RAT PC5 control authorization.

[0087] The embodiment of the present invention also provides a sidelink SL positioning authentication device, which is applied to a terminal and includes a transceiver and a processor.

[0088] The transceiver is used to send first capability information to a first core network element, where the first capability information indicates that the terminal supports SL positioning.

[0089] The embodiment of the present invention also provides a sidelink SL positioning authentication device, which is applied to a first core network element and includes a transceiver and a processor.

[0090] The transceiver is used to receive first capability information sent by a terminal, where the first capability information indicates that the terminal supports SL positioning;

[0091] The processor is used to authenticate the first capability information of the terminal and send a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

[0092] The embodiment of the present invention also provides a side link SL positioning authentication device, which is applied to a base station and includes a transceiver and a processor.

[0093] The transceiver is used to receive a first service authorization indication sent by a first core network network element, indicating SL positioning authorization information of the terminal.

[0094] An embodiment of the present invention also provides a sidelink SL positioning and authentication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the program, the steps in the sidelink SL positioning and authentication method as described above are implemented.

[0095] An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the sidelink SL positioning and authentication method as described above or the steps in the sidelink SL positioning and authentication method as described above are implemented.

[0096] The embodiments of the present invention have the following beneficial effects:

[0097] In the above scheme, the terminal sends its own capability of supporting SL positioning to the first core network element. The first core network element decides whether the terminal is authorized for SL positioning based on the capabilities reported by the terminal, and if it is determined that the terminal is authorized for SL positioning, it indicates the SL positioning authorization information of the terminal to the base station. In this way, the base station can obtain the core network's authentication indication of the terminal. The base station can know whether the joined terminal is eligible to receive the SL positioning configuration, and can subsequently allocate resources to the terminal to achieve SL positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] Figure 1 It is a flowchart of the existing positioning solution;

[0099] Figure 2-Figure 4 This is a schematic diagram of the network coverage scenario;

[0100] Figure 5-Figure 7 It is a flow chart of the sidelink SL positioning and authentication method according to an embodiment of the present invention;

[0101] Figure 8 It is a structural diagram of a sidelink SL positioning and authentication device according to an embodiment of the present invention;

[0102] Fig. 9 It is a schematic diagram of the composition of the sidelink SL positioning authentication device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0103] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0104] In the existing positioning technology architecture, AMF (Access and Mobility Management Function) will receive a positioning request for the target UE from other entities (such as GMLC (Gateway Mobile Location Centre) or UE (User Equipment)), or AMF will spontaneously decide to initiate positioning services for the target UE after receiving an emergency call from the UE. Then, AMF will send a positioning service request to LMF (Location Management Function). LMF will process the positioning service request and locate the UE or send auxiliary information to assist UE in positioning or measurement. After obtaining the positioning result, LMF will send the result to AMF. If the positioning service is not initiated by AMF, AMF will return the positioning result to the entity that initiated the positioning service. The specific process is as follows: Figure 1 shown.

[0105] Currently, V2X (Vehicle-to-Everything) positioning and public safety positioning are among the main 5G positioning use cases. Among them, V2X and public safety positioning mainly include three network coverage scenarios, namely IC (In-coverage), OOC (Out-of-coverage) and PC (Partial coverage). The in-coverage scenario means that all UEs are covered by the network; the partial coverage scenario means that at least one UE is covered by the network, and the remaining UEs have no network coverage; the out-of-coverage scenario means that all UEs have no network coverage. The three coverage scenarios are as follows: Figure 2-4 As shown, Figure 2 is a schematic diagram of the covered internal scene. Figure 3 A schematic diagram of a partially covered scene. Figure 4 A schematic diagram of the covered external scene.

[0106] Among them, the communication interface between UE and base station is Uu interface, and the communication interface between UE and UE is PC5 interface. Uu interface, PC5 interface, Uu and PC5 interface together constitute the wireless link in positioning. Uu interface is used for coverage scenarios and partial coverage scenarios, and PC5 interface can be used in the above three scenarios.

[0107] Currently, there is no mechanism to support the core network to notify the base station side about the service authentication indication and parameters of SL positioning. If the base station cannot obtain the authentication indication of the core network for the UE, the base station side does not know whether the joined UE is eligible to receive the SL positioning configuration, and cannot subsequently allocate resources to the UE, resulting in the failure of SL positioning. If the base station cannot obtain the SL positioning QoS (Quality of Service) parameters of the core network for the UE, the base station side cannot obtain the priority of the data service and cannot perform more refined scheduling and management of the data service.

[0108] The embodiments of the present invention provide a sidelink SL positioning authentication method, device and medium, which can realize sidelink positioning.

[0109] An embodiment of the present invention provides a sidelink SL positioning authentication method, which is applied to a terminal, such as Figure 5 As shown, including:

[0110] Step 101: A terminal sends first capability information to a first core network element, where the first capability information indicates that the terminal supports SL positioning.

[0111] In this embodiment, the terminal sends its own capability of supporting SL positioning to the first core network network element, so that the first core network network element can decide whether the terminal is authorized for SL positioning based on the capabilities reported by the terminal, and if it is determined that the terminal is authorized for SL positioning, indicate the SL positioning authorization information of the terminal to the base station, so that the base station can obtain the core network's authentication indication of the terminal, and the base station can know whether the joined terminal is eligible to receive the SL positioning configuration, and can subsequently allocate resources to the terminal, thereby realizing SL positioning.

[0112] In this embodiment, when the UE initiates a registration request during the registration phase, the UE can carry its own capability to support SL positioning in the registration request message through transparent transmission. The first capability information can be carried in the mobility management capability information element 5GMM capability IE or the terminal mobility management core network capability information element UE MMCore Network Capability IE in the registration positioning request message or in a new IE.

[0113] In some embodiments, in addition to the information that the UE supports SL positioning, the first capability information also includes any one of the following:

[0114] The terminal supports serving as an anchor UE in SL positioning;

[0115] The terminal supports being a target terminal (target UE) in SL positioning;

[0116] The terminal supports being a server UE in SL positioning, i.e., a UE selected from multiple UEs, the UE has LMF-like functions and needs to have a PC5 connection with all UEs;

[0117] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0118] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0119] The terminal supports being a target terminal and a service terminal in SL positioning;

[0120] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0121] In this way, when the first core network element determines that the terminal is authorized for SL positioning, it can determine, based on the first capability information, that the UE is authorized to play a role in SL positioning, so as to assist the base station in allocating resources to the terminal.

[0122] In some embodiments, the first capability information is sent after the terminal enters a valid area. Within the valid area, the SL capability reported by the terminal will not change. If it exceeds the scope of the valid area, the UE can re-initiate authentication to the network side to update the SL capability supported by the UE.

[0123] In some embodiments, the effective area is configured on the network side or the terminal, and the network side may be a base station or a core network element. When the effective area is configured on the core network element, the scope of the effective area may be an area defined by the core network element, and the effective area may be characterized as a circular area with the current position of the UE as the center and the radius defined by the core network element, or may be characterized as an area centered on the current position of the base station. The effective area may be configured to be of uniform size for all UEs, or effective areas of different sizes may be configured for terminals of different capability types according to the different capabilities of the terminals. When the UE moves out of the current effective area, the authentication update may be triggered to report the SL capabilities supported by the UE. If the UE previously reported its capabilities as an anchor UE, it can no longer be used as an anchor UE due to the change in position or the distance from other UEs at this time, and the UE needs to report to the core network element that it supports being a target UE. The core network element sends the location information of the effective area to the base station, and the location information may be the effective radius of the effective area (with the UE as the center or the base station as the center), or the coordinate information of the effective area (with the base station as the center).

[0124] When the effective area is configured for the UE, the size of the effective area can be determined by the UE based on its own location coordinates and the distance from the base station. When the UE finds that it has moved out of the range of a certain effective area, it can actively initiate an authentication update and report the SL capabilities supported by the UE to the network side. The size of the effective area can also be determined by the signal strength measured by the terminal, where the measurement quantity includes at least one of the following: RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (signal-to-noise and interference ratio), RSSI (Received Signal Strength Indication).

[0125] The embodiment of the present invention also provides a sidelink SL positioning authentication method, such as Figure 6 As shown, it is applied to the first core network element, including:

[0126] Step 201: A first core network element receives first capability information sent by a terminal, where the first capability information indicates that the terminal supports SL positioning;

[0127] Step 202: The first core network element authenticates the first capability information of the terminal, and sends a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

[0128] The first service authorization indication may indicate that the terminal is authorized for the SL positioning service or is not authorized for the SL positioning service.

[0129] In this embodiment, the terminal sends its own capability of supporting SL positioning to the first core network network element, so that the first core network network element can decide whether the terminal is authorized for SL positioning service based on the terminal's own capabilities reported by the terminal, and if it is determined that the terminal is authorized for SL positioning service, indicate the SL positioning authorization information of the terminal to the base station, so that the base station can obtain the core network's authentication indication of the terminal, and the base station can know whether the joined terminal is eligible to receive SL positioning configuration, and can subsequently allocate resources to the terminal, thereby realizing SL positioning.

[0130] In this embodiment, when the UE initiates a registration request during the registration phase, the UE can carry its own capability to support SL positioning in the registration request message through transparent transmission. The first capability information can be carried in the mobility management capability information element 5GMM capability IE or the terminal mobility management core network capability information element UE MMCore Network Capability IE in the registration positioning request message or in a new IE.

[0131] Among them, the first core network network element can be AMF. After the first core network network element (AMF) receives the registration request message transparently transmitted from the UE, it decides whether the UE can be authorized for SL positioning based on the SL positioning data in the user subscription information provided by UDM (Unified Data Management) and the capabilities reported by the UE. At the same time, the AMF stores the authorization information and sends a service authorization indication to the base station. The service authorization indication can be "UE is authorized for SL positioning service", or "SL positioning service is authorized", or "UE is not authorized for SL positioning service", or "SL positioning service is not authorized", etc.

[0132] In some embodiments, the first capability information further includes any one of the following:

[0133] The terminal supports being an anchor terminal in SL positioning;

[0134] The terminal supports being a target terminal in SL positioning;

[0135] The terminal supports serving as a service terminal in SL positioning;

[0136] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0137] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0138] The terminal supports being a target terminal and a service terminal in SL positioning;

[0139] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0140] In this way, when the first core network element determines that the terminal is authorized for SL positioning, it can determine, based on the first capability information, that the UE is authorized to play a role in SL positioning, so as to assist the base station in allocating resources to the terminal.

[0141] Within the valid area, the SL capabilities reported by the terminal will not change. If it exceeds the scope of the valid area, the UE can re-initiate authentication update to the network side to report the SL capabilities supported by the UE.

[0142] In some embodiments, the effective area is configured on the network side or the terminal, and the network side may be a base station or a core network element. When the effective area is configured on the core network element, the scope of the effective area may be an area defined by the core network element, and the effective area may be characterized as a circular area with the current position of the UE as the center and the radius defined by the core network element, or may be characterized as an area centered on the current position of the base station. The effective area may be configured to be of uniform size for all UEs, or effective areas of different sizes may be configured for terminals of different capability types according to the different capabilities of the terminals. When the UE moves out of the current effective area, the authentication update may be triggered to report the SL capabilities supported by the UE. If the UE previously reported its capabilities as an anchor UE, it can no longer be used as an anchor UE due to the change in position or the distance from other UEs at this time, and the UE needs to report to the core network element that it supports being a target UE. The core network element sends the location information of the effective area to the base station, and the location information may be the effective radius of the effective area (with the UE as the center or the base station as the center), or the coordinate information of the effective area (with the base station as the center).

[0143] When the effective area is configured for the UE, the size of the effective area can be determined by the UE based on its own location coordinates and the distance from the base station. When the UE finds that it has moved out of the range of a certain effective area, it can actively initiate an authentication update and report the SL capabilities supported by the UE to the network side. The size of the effective area can also be determined by the signal strength measured by the terminal, where the measurement quantity includes at least one of the following: RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (signal-to-noise and interference ratio), RSSI (Received Signal Strength Indication).

[0144] In some embodiments, the method further comprises:

[0145] In the case where the terminal is authorized for the SL positioning service, the first core network element sends the authorization type of the terminal to the target base station, where the authorization type includes any one of the following:

[0146] Anchor terminal in SL positioning;

[0147] Target terminal in SL positioning;

[0148] Service terminal in SL positioning;

[0149] Anchor terminal and target terminal in SL positioning;

[0150] Anchor terminal and service terminal in SL positioning;

[0151] Target terminal and service terminal in SL positioning;

[0152] Anchor terminal, target terminal and service terminal in SL positioning.

[0153] In this embodiment, before sending the authorization type of the terminal, the first core network element may determine the authorization type of the terminal.

[0154] In some embodiments, the method further comprises:

[0155] When the terminal is authorized for the SL positioning service, the first core network element sends at least one of the following to the target base station:

[0156] Quality of service (QoS) parameters for SL positioning services;

[0157] QoS parameters for inter-terminal SL communication used for SL positioning; terminal aggregate maximum bit rate AMBR on PC5 interface;

[0158] Cross-RAT PC5 control authorization.

[0159] In some embodiments, the QoS parameters of the SL positioning service include at least one of the following:

[0160] Absolute or relative horizontal positioning accuracy;

[0161] Vertical coordinate request;

[0162] Absolute or relative vertical positioning accuracy;

[0163] Response time;

[0164] Speed ​​request.

[0165] In some embodiments, the QoS parameters of the SL positioning service further include at least one of the following:

[0166] 5G QoS identifier 5QI;

[0167] Allocate and occupy priority ARP;

[0168] Maximum packet loss rate;

[0169] QoS notification mechanism;

[0170] GFBR and MFBR for each guaranteed bit rate QoS flow.

[0171] Based on the SL positioning QoS parameters sent by the PCF (Policy Control Function), the AMF can send the SL QoS parameters used by the base station for positioning to the base station. The SL QoS parameters include absolute or relative horizontal positioning accuracy, vertical coordinate request (i.e., whether the vertical coordinate needs to be introduced), absolute or relative vertical positioning accuracy, response time and speed request (i.e., whether the speed needs to be introduced). In addition, it also includes 5QI, ARP, maximum packet loss rate, QoS notification mechanism, and GFBR (Guaranteed Flow Bit Rate) and MFBR (Maximum Flow Bit Rate) for each GBR (Guaranteed Bit Rate) QoS flow. After obtaining the QoS parameters, the base station can know which positioning services have high-precision requirements, are sensitive to latency, or need to guarantee packet loss rate, and the base station can give priority to such services.

[0172] In addition, based on the user subscription information sent by UDM, AMF can also send the UE-AMBR of the UE on the PC5 interface to the base station, that is, the aggregate bit rate that can be expected to be provided by all non-GBR (non-Guaranteed Bit Rate) QoS flows in a single UE on the PC5 interface. In addition, AMF can also send a cross-RAT PC5 control authorization to the base station, which is used for the base station to manage the resources of the content transmitted by the UE in SL PC5. The authorization indicates whether the LTE (Long Term Evolution) base station is capable of scheduling the content sent by the LTE PC5 and / or NR PC5 interface within the coverage and whether the NR base station is capable of scheduling the content sent by the LTE PC5 and / or NR PC5 interface within the coverage when the network arranges resource allocation.

[0173] In some embodiments, the method further comprises:

[0174] In the case where the terminal is authorized for the SL positioning service, when the terminal undergoes NG interface switching, a switching request signaling is sent to the target base station, where the switching request signaling carries at least one of the following:

[0175] Business authorization instructions;

[0176] Location information of the effective area;

[0177] Quality of service (QoS) parameters for SL positioning services;

[0178] QoS parameters for inter-terminal SL communication used for SL positioning;

[0179] Terminal AMBR on PC5 interface;

[0180] Cross-RAT PC5 control authorization.

[0181] In this embodiment, for the scenario where UE undergoes NG switching, AMF (if it is inter AMF switching, it refers to the target AMF) needs to send a switching request signaling to the target base station, and carry the service authorization indication message, valid area information, UE-AMBR on the PC5 interface, cross-RAT PC5 control authorization and SL positioning QoS parameters. In this way, the target base station can know whether the joined terminal is eligible to receive the SL positioning configuration, and subsequently allocate resources to the terminal to achieve SL positioning.

[0182] The embodiment of the present invention also provides a sidelink SL positioning authentication method, which is applied to a base station, such as Figure 7 As shown, including:

[0183] Step 301: The base station receives a first service authorization indication sent by a first core network element, indicating SL positioning authorization information of the terminal.

[0184] In this embodiment, the base station can obtain the authentication indication of the terminal from the core network. The base station can know whether the joined terminal is eligible to receive SL positioning configuration, and can subsequently allocate resources to the terminal to achieve SL positioning.

[0185] The terminal may not be authorized for the SL positioning service. The first service authorization indication may indicate whether the terminal is authorized or not. If the terminal is not authorized for the SL positioning service, the base station will initiate a process to prevent the terminal from accessing the SL positioning service.

[0186] In some embodiments, the method further comprises:

[0187] Receive location information of the valid area sent by the first core network network element.

[0188] In some embodiments, the effective area is configured on the network side or configured on the terminal. When the effective area is configured as a core network element, the scope of the effective area can be an area defined by the core network element, and the effective area can be characterized as a circular area with the current position of the UE as the center and the radius defined by the core network element, or it can be characterized as an area centered on the current position of the base station. The effective area can be configured to be a uniform size for all UEs, or different sizes of effective areas can be configured for terminals of different capability types according to the different capabilities of the terminals. When the UE moves out of the current effective area, the authentication update can be triggered to report the SL capabilities supported by the UE. If the UE previously reported its capabilities as an anchor UE, it can no longer be used as an anchor UE due to the change in position or the distance from other UEs at this time. The UE needs to report to the core network element that it supports being a target UE. The core network element sends the location information of the effective area to the base station, and the location information can be the effective radius of the effective area (with the UE as the center or the base station as the center), or it can be the coordinate information of the effective area (with the base station as the center).

[0189] When the effective area is configured for the UE, the size of the effective area can be determined by the UE based on its own location coordinates and the distance from the base station. Within the effective area, the SL capability reported by the terminal will not change. If it exceeds the scope of the effective area, the UE can re-initiate authentication update to the network side to report the SL capabilities supported by the UE. The size of the effective area can also be determined by the signal strength measured by the terminal, where the measurement quantity includes at least one of the following: RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (signal-to-noise and interference ratio), RSSI (Received Signal Strength Indication).

[0190] In some embodiments, the method further comprises:

[0191] When the terminal is authorized for the SL positioning service, receiving at least one of the following items sent by the first core network element:

[0192] Quality of service (QoS) parameters for SL positioning services;

[0193] QoS parameters for inter-terminal SL communication used for SL positioning;

[0194] The terminal aggregate maximum bit rate AMBR on the PC5 interface;

[0195] Cross-RAT PC5 control authorization.

[0196] After obtaining the QoS parameters, the base station can know which positioning services have high-precision requirements, are sensitive to latency, or need to guarantee packet loss rate, and the base station can give priority to such services. After obtaining the terminal aggregate maximum bit rate AMBR on the PC5 interface, the base station can allocate resources to the terminal according to the UE-AMBR. The cross-RAT PC5 control authorization enables the base station to manage resources for the content transmitted by the UE in SL PC5. The authorization indicates whether the LTE (LongTerm Evolution) base station is capable of scheduling the content sent by the LTE PC5 and / or NR PC5 interfaces within the coverage and whether the NR base station is capable of scheduling the content sent by the LTE PC5 and / or NR PC5 interfaces within the coverage when the network arranges resource allocation.

[0197] In some embodiments, the method further comprises:

[0198] In the case where the terminal is authorized for the SL positioning service, when an Xn handover occurs in the terminal, a handover request signaling is sent to the target base station, and the handover request signaling carries at least one of the following:

[0199] Business authorization instructions;

[0200] Location information of the effective area;

[0201] Quality of service (QoS) parameters for SL positioning services;

[0202] QoS parameters for inter-terminal SL communication used for SL positioning;

[0203] Terminal AMBR on PC5 interface;

[0204] Cross-RAT PC5 control authorization.

[0205] In this embodiment, for the scenario where the UE undergoes Xn switching, the source base station needs to send a switching request signaling to the target base station, and carry therein a service authorization indication message, valid area information, UE-AMBR on the PC5 interface, cross-RATPC5 control authorization and SL positioning QoS parameters, so that the target base station can know whether the joined terminal is eligible to receive the SL positioning configuration, and subsequently allocate resources to the terminal to achieve SL positioning.

[0206] The embodiment of the present invention also provides a sidelink SL positioning authentication device, which is applied to a terminal, such as Figure 8 As shown, it includes a transceiver 51 and a processor 52,

[0207] The transceiver 51 is used to send first capability information to the first core network element, where the first capability information indicates that the terminal supports SL positioning.

[0208] In some embodiments, the first capability information further includes any one of the following:

[0209] The terminal supports being an anchor terminal in SL positioning;

[0210] The terminal supports being a target terminal in SL positioning;

[0211] The terminal supports serving as a service terminal in SL positioning;

[0212] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0213] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0214] The terminal supports being a target terminal and a service terminal in SL positioning;

[0215] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0216] In some embodiments, the first capability information is sent after the terminal enters a valid area.

[0217] In some embodiments, the valid area is a network side configuration or the terminal configuration.

[0218] 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 a base station, or by the signal strength measured by the terminal.

[0219] The embodiment of the present invention also provides a sidelink SL positioning authentication device, which is applied to a first core network element, such as Figure 8 As shown, it includes a transceiver 51 and a processor 52,

[0220] The transceiver 51 is used to receive first capability information sent by a terminal, where the first capability information indicates that the terminal supports SL positioning;

[0221] The processor 52 is used to authenticate the first capability information of the terminal and send a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

[0222] In some embodiments, the first capability information further includes any one of the following:

[0223] The terminal supports being an anchor terminal in SL positioning;

[0224] The terminal supports being a target terminal in SL positioning;

[0225] The terminal supports serving as a service terminal in SL positioning;

[0226] The terminal supports being an anchor terminal and a target terminal in SL positioning;

[0227] The terminal supports being an anchor terminal and a serving terminal in SL positioning;

[0228] The terminal supports being a target terminal and a service terminal in SL positioning;

[0229] The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

[0230] In some embodiments, the first capability information is sent after the terminal enters a valid area.

[0231] In some embodiments, the valid area is a network side configuration or the terminal configuration.

[0232] 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 a base station, or by the signal strength measured by the terminal.

[0233] In some embodiments, the transceiver 51 is further configured to send location information of the effective area to a base station.

[0234] In some embodiments, the transceiver 51 is further configured to send the authorization type of the terminal to the target base station when the terminal is authorized for the SL positioning service, and the authorization type includes any one of the following:

[0235] Anchor terminal in SL positioning;

[0236] Target terminal in SL positioning;

[0237] Service terminal in SL positioning;

[0238] Anchor terminal and target terminal in SL positioning;

[0239] Anchor terminal and service terminal in SL positioning;

[0240] Target terminal and service terminal in SL positioning;

[0241] Anchor terminal, target terminal and service terminal in SL positioning.

[0242] In some embodiments, when the terminal is authorized for SL positioning service, the transceiver 51 is further configured to send at least one of the following to the base station:

[0243] Quality of service (QoS) parameters for SL positioning services;

[0244] QoS parameters for inter-terminal SL communication used for SL positioning;

[0245] The terminal aggregate maximum bit rate AMBR on the PC5 interface;

[0246] Cross-RAT PC5 control authorization.

[0247] In some embodiments, when the first core network element authorizes the terminal to perform SL positioning, the transceiver 51 is further configured to send a switching request signaling to the target base station when an NG interface switching occurs in the terminal, and the switching request signaling carries at least one of the following:

[0248] Business authorization instructions;

[0249] Location information of the effective area;

[0250] Quality of service (QoS) parameters for SL positioning services;

[0251] QoS parameters for inter-terminal SL communication used for SL positioning;

[0252] Terminal AMBR on PC5 interface;

[0253] Cross-RAT PC5 control authorization.

[0254] In some embodiments, the QoS parameters of the SL positioning service include at least one of the following:

[0255] Absolute or relative horizontal positioning accuracy;

[0256] Vertical coordinate request;

[0257] Absolute or relative vertical positioning accuracy;

[0258] Response time;

[0259] Speed ​​request.

[0260] In some embodiments, the QoS parameters of the SL positioning service further include at least one of the following:

[0261] 5G QoS identifier 5QI;

[0262] Allocate and occupy priority ARP;

[0263] Maximum packet loss rate;

[0264] QoS notification mechanism;

[0265] For each guaranteed bit rate QoS flow the reserved flow bit rate GFBR and the maximum flow bit rate MFBR.

[0266] The embodiment of the present invention also provides a sidelink SL positioning authentication device, which is applied to a base station, such as Figure 8 As shown, it includes a transceiver 51 and a processor 52,

[0267] The transceiver 51 is used to receive a first service authorization indication sent by a first core network network element, indicating SL positioning authorization information of the terminal.

[0268] In some embodiments, the transceiver 51 is further configured to receive location information of a valid area sent by the first core network element.

[0269] In some embodiments, when the terminal is authorized for SL positioning, the transceiver 51 is further configured to receive at least one of the following items sent by the first core network element:

[0270] Quality of service (QoS) parameters for SL positioning services;

[0271] QoS parameters for inter-terminal SL communication used for SL positioning;

[0272] The terminal aggregate maximum bit rate AMBR on the PC5 interface;

[0273] Cross-RAT PC5 control authorization.

[0274] In some embodiments, when the terminal is authorized for SL positioning, the transceiver 51 is further configured to send a handover request signaling to the target base station when an Xn handover occurs in the terminal, wherein the handover request signaling carries at least one of the following:

[0275] Business authorization instructions;

[0276] Location information of the effective area;

[0277] Quality of service (QoS) parameters for SL positioning services;

[0278] QoS parameters for inter-terminal SL communication used for SL positioning;

[0279] Terminal AMBR on PC5 interface;

[0280] Cross-RAT PC5 control authorization.

[0281] The embodiment of the present invention also provides a sidelink SL positioning authentication device, such as Fig. 9As shown, it includes a memory 61, a processor 62, and a computer program stored in the memory 61 and executable on the processor 62; when the processor 62 executes the program, the steps in the sidelink SL positioning authentication method as described above are implemented.

[0282] An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the sidelink SL positioning and authentication method as described above or the steps in the sidelink SL positioning and authentication method as described above are implemented.

[0283] Computer readable media include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. Information can 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 technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage terminal devices to be detected or any other non-transmission media that can be used to store information that can be accessed by the computer terminal device to be detected. As defined in this article, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carriers.

[0284] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sidelink SL positioning authentication method, characterized in that: Applied to terminals, including: The terminal sends first capability information to the first core network element, where the first capability information indicates that the terminal supports SL positioning.

2. The method according to claim 1, characterized in that The first capability information also includes any of the following: The terminal supports being an anchor terminal in SL positioning; The terminal supports being a target terminal in SL positioning; The terminal supports serving as a service terminal in SL positioning; The terminal supports being an anchor terminal and a target terminal in SL positioning; The terminal supports being an anchor terminal and a serving terminal in SL positioning; The terminal supports being a target terminal and a service terminal in SL positioning; The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

3. The method according to claim 1, characterized in that The first capability information is sent after the terminal enters a valid area.

4. The method according to claim 3, characterized in that The valid area is the network side configuration or the terminal configuration.

5. The method according to claim 4, characterized in that 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 authentication method, characterized in that: Applicable to the first core network element, including: The first core network element receives first capability information sent by the terminal, where the first capability information indicates that the terminal supports SL positioning; The first core network element authenticates the first capability information of the terminal and sends a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

7. The method according to claim 6, characterized in that The first capability information also includes any of the following: The terminal supports being an anchor terminal in SL positioning; The terminal supports being a target terminal in SL positioning; The terminal supports serving as a service terminal in SL positioning; The terminal supports being an anchor terminal and a target terminal in SL positioning; The terminal supports being an anchor terminal and a serving terminal in SL positioning; The terminal supports being a target terminal and a service terminal in SL positioning; The terminal supports being an anchor terminal, a target terminal and a service terminal in SL positioning.

8. The method according to claim 6, characterized in that The first capability information is sent after the terminal enters a valid area.

9. The method according to claim 8, characterized in that The valid area is the network side configuration or the terminal configuration.

10. The method according to claim 8, characterized in that 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, characterized in that The method further comprises: The first core network element sends the location information of the valid area to the base station.

12. The method according to claim 6, characterized in that The method further comprises: In the case where the terminal is authorized for the SL positioning service, the first core network element sends the authorization type of the terminal to the target base station, where the authorization type includes any one of the following: Anchor terminal in SL positioning; Target terminal in SL positioning; Service terminal in SL positioning; Anchor terminal and target terminal in SL positioning; Anchor terminal and service terminal in SL positioning; Target terminal and service terminal in SL positioning; Anchor terminal, target terminal and service terminal in SL positioning.

13. The method according to claim 6, characterized in that The method further comprises: When the terminal is authorized for the SL positioning service, the first core network element sends at least one of the following to the target base station: Quality of service (QoS) parameters for SL positioning services; QoS parameters for inter-terminal SL communication used for SL positioning; terminal aggregate maximum bit rate AMBR on PC5 interface; Cross-RAT PC5 control authorization.

14. The method according to claim 6, characterized in that The method further comprises: In the case where the terminal is authorized for the SL positioning service, when the terminal undergoes NG interface switching, a switching request is sent to the target base station, and the switching request carries at least one of the following: Business authorization instructions; Location information of the effective area; Quality of service (QoS) parameters for SL positioning services; QoS parameters for inter-terminal SL communication used for SL positioning; Terminal AMBR on PC5 interface; Cross-RAT PC5 control authorization.

15. The method according to claim 13 or 14, characterized in that The QoS parameters of the SL positioning service include at least one of the following: Absolute or relative horizontal positioning accuracy; Vertical coordinate request; Absolute or relative vertical positioning accuracy; Response time; Speed ​​request.

16. The method according to claim 15, characterized in that The QoS parameters of the SL positioning service also include at least one of the following: 5G QoS identifier 5QI; Allocate and occupy priority ARP; Maximum packet loss rate; QoS notification mechanism; For each guaranteed bit rate QoS flow the reserved flow bit rate GFBR and the maximum flow bit rate MFBR.

17. A sidelink SL positioning authentication method, characterized in that: Applied to base stations, including: The base station receives a first service authorization indication sent by a first core network network element, indicating the SL positioning authorization information of the terminal.

18. The method according to claim 17, characterized in that The method further comprises: Receive location information of the valid area sent by the first core network network element.

19. The method according to claim 17, characterized in that The method further comprises: When the terminal is authorized for SL positioning, receiving at least one of the following items sent by the first core network element: Quality of service (QoS) parameters for SL positioning services; QoS parameters for inter-terminal SL communication used for SL positioning; The terminal aggregate maximum bit rate AMBR on the PC5 interface; Cross-RAT PC5 control authorization.

20. The method according to claim 17, characterized in that The method further comprises: In the case where the terminal is authorized for SL positioning, when an Xn handover occurs in the terminal, a handover request is sent to the target base station, and the handover request carries at least one of the following: Business authorization instructions; Location information of the effective area; Quality of service (QoS) parameters for SL positioning services; QoS parameters for inter-terminal SL communication used for SL positioning; Terminal AMBR on PC5 interface; Cross-RAT PC5 control authorization.

21. A sidelink SL positioning authentication device, characterized in that: Applied to terminals, including transceivers and processors, The transceiver is used to send first capability information to a first core network element, where the first capability information indicates that the terminal supports SL positioning.

22. A sidelink SL positioning authentication device, characterized in that: Applicable to the first core network element, including a transceiver and a processor, The transceiver is used to receive first capability information sent by a terminal, where the first capability information indicates that the terminal supports SL positioning; The processor is used to authenticate the first capability information of the terminal and send a first service authorization indication to the base station, indicating the SL positioning authorization information of the terminal.

23. A sidelink SL positioning authentication device, characterized in that: Applied to base stations, including transceivers and processors, The transceiver is used to receive a first service authorization indication sent by a first core network network element, indicating SL positioning authorization information of the terminal.

24. A sidelink SL positioning authentication device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: When the processor executes the program, it implements the steps in the sidelink SL positioning authentication method as described in any one of claims 1-20.

25. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in the sidelink SL positioning authentication method as described in any one of claims 1 to 20 are implemented.

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