Delay positioning method and device

Abstract

The embodiment of the invention relates to a delayed positioning method and device, after a terminal device sends an event report to an AMF, an LCS association identifier is generated through the AMF, so that the AMF can identify the LCS association identifier, and the context of a positioning session is associated through the LCS association identifier. By sending the event report and the LCS association identifier generated by the AMF to the LMF, the LMF can initiate the delayed positioning process based on the LCS association identifier, thereby ensuring the normal operation of the delayed positioning process, improving the reliability of the delayed positioning execution, and solving the problem that in the related technology, after the AMF releases the positioning session resource, the delay positioning process cannot be executed. And the problem that the subsequent delay positioning process cannot be normally executed due to the fact that the LCS association identifier is released is solved.

Description

Technical Field

[0001] This disclosure relates to the field of delayed positioning technology, and more particularly to a delayed positioning method and apparatus. Background Technology

[0002] Delayed positioning refers to a positioning technology that sends the positioning results to the requesting party when a predefined event (such as UE availability event, area event, periodic location event, and motion event) is triggered.

[0003] In delayed location technology, the Location Service (LCS) association identifier is an important identifier. This identifier serves as the identifier for sessions related to the location of the User Equipment (UE) within the Access and Mobility Management Function (AMF). It is used to establish the association of session contexts and is a prerequisite for UE location.

[0004] However, in practice, when the UE detects a predefined event and reports it, it will use the delayed route identifier as the LCS association identifier. The delayed route identifier cannot be used as a session identifier, nor can it be used as a prerequisite for UE positioning, thus causing UE positioning to fail. Summary of the Invention

[0005] To address the aforementioned technical problems, this disclosure provides a delayed positioning method and apparatus.

[0006] A first aspect of this disclosure provides a delayed positioning method, the method comprising: a terminal device sending an event report to an AMF, the AMF receiving the event report, generating an LCS association identifier, and sending the LCS association identifier and the event report to a Location Management Function (LMF); and receiving an event report confirmation message sent by the AMF.

[0007] In some implementations, the method may further include:

[0008] The terminal device receives a second location message sent by the AMF, which includes a routing identifier. The routing identifier is set to the LMF identifier. The second location message is sent by the AMF after receiving the first location message sent by the LMF. The first location message includes the LCS association identifier and the LMF identifier. The terminal device also sends a third location message to the AMF, which includes a routing identifier. The AMF uses the routing identifier to send a fourth location message to the LMF. The fourth location message includes the LCS association identifier.

[0009] A second aspect of this disclosure provides a delayed positioning method, the method comprising:

[0010] The AMF receives event reports from the terminal device and sends event reports and LCS association identifiers to the LMF. The LCS association identifiers are generated after receiving event reports from the terminal device.

[0011] In some implementations, the method may further include, before sending the event report and LCS association identifier to the LMF:

[0012] AMF generates an LCS association identifier and binds the LCS association identifier to the location session of the terminal device.

[0013] In some embodiments, the method provided in the second aspect of this disclosure may further include:

[0014] AMF receives a first location message sent by LMF, the first location message including an LCS association identifier and an LMF identifier; and

[0015] A second location message is sent to the terminal device. The second location message includes a routing identifier, and the routing identifier is set to the LMF identifier.

[0016] In some implementations, the LMF identifier referred to in the embodiments of this disclosure may be a fully qualified domain name (FQDN).

[0017] In some embodiments, the method provided in the second aspect of this disclosure may further include:

[0018] AMF receives a third location message sent by the terminal device, the third location message including a routing identifier; and

[0019] Based on the routing identifier, a fourth location message is sent to the LMF, which includes the LCS association identifier.

[0020] In some embodiments, the method provided in the second aspect of this disclosure may further include:

[0021] AMF receives a first indication message to indicate that location measurement of the terminal device should be stopped, and releases the location session resources of the terminal device.

[0022] Alternatively, receive a second indication message to instruct continued location measurement of the terminal device, and retain the location session resources of the terminal device;

[0023] This location session resource includes the LCS association identifier.

[0024] In some embodiments, the method provided in the second aspect of this disclosure may further include:

[0025] AMF receives an event report confirmation message sent by LMF, which includes either a first indication message or a second indication message.

[0026] In some implementations, releasing the location session resources of a terminal device includes: releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0027] A third aspect of this disclosure provides a delayed positioning method, the method comprising:

[0028] The LMF receives event reports and LCS association identifiers sent by the AMF. The LCS association identifier is generated by the AMF after receiving event reports sent by the terminal device.

[0029] Send an event report confirmation message to the AMF.

[0030] In some embodiments, the method provided in the third aspect of this disclosure may further include:

[0031] LMF sends a first location message to AMF, which includes the LCS association identifier and the LMF identifier;

[0032] AMF is used to send a second location message to the terminal device after receiving the first location message. The second location message includes a routing identifier, the value of which is the LMF identifier.

[0033] In some embodiments, the method provided in the third aspect of this disclosure may further include:

[0034] LMF receives the fourth location message sent by AMF, which includes the LCS association identifier;

[0035] The fourth location message is sent by the AMF after it receives the third location message from the terminal device. The third location message includes a routing identifier.

[0036] In some implementations, the event report confirmation message includes a first indication message for indicating to stop location measurement of the terminal device, and the AMF is used to release the location session resources of the terminal device;

[0037] Alternatively, the event report confirmation message may include a second instruction to continue location measurement of the terminal device, and the AMF may be used to retain the location session resources of the terminal device; the location session resources include the LCS association identifier.

[0038] In some implementations, the AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0040] A fourth aspect of this disclosure provides a terminal device, the terminal device comprising:

[0041] Memory, transceiver, processor:

[0042] Memory is used to store computer programs; transceiver is used to send and receive data under the control of the processor; processor is used to read the computer programs from memory and perform the following operations:

[0043] The transceiver sends event reports to the Access and Mobility Management Function (AMF) network element. The AMF receives the event reports, generates a Location Service (LCS) association identifier, and sends the LCS association identifier and event report to the Location Management Function (LMF) network element.

[0044] Receive event report confirmation messages sent by AMF.

[0045] In some implementations, the processor is also used for:

[0046] The transceiver receives a second location message sent by the AMF. This second location message includes a routing identifier, the value of which is the LMF identifier. The second location message is sent by the AMF after receiving the first location message from the LMF. The first location message includes an LCS association identifier and the LMF identifier.

[0047] A third location message is sent to the AMF, which includes a routing identifier. The AMF uses this routing identifier to send a fourth location message to the LMF, which includes an LCS association identifier.

[0048] A fifth aspect of this disclosure provides an access and mobility management device, including: a memory, a transceiver, and a processor.

[0049] Memory is used to store computer programs; transceiver is used to send and receive data under the control of the processor; processor is used to read the computer programs from memory and perform the following operations:

[0050] Receive event reports sent by terminal devices via transceiver; and

[0051] Send event reports and location service (LCS) association identifiers to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

[0052] In some implementations, the processor is also used for:

[0053] Generate an LCS association identifier and bind the LCS association identifier to the location session of the terminal device.

[0054] In some implementations, the processor is also used for:

[0055] The transceiver receives the first location message sent by the LMF, which includes the LCS association identifier and the LMF identifier; and

[0056] A second location message is sent to the terminal device. The second location message includes a routing identifier, and the routing identifier is set to the LMF identifier.

[0057] In some implementations, the LMF identifier can be a fully qualified domain name (FQDN).

[0058] In some implementations, the processor is also used for:

[0059] The transceiver receives a third location message sent by the terminal device, the third location message including a routing identifier; and

[0060] Based on the routing identifier, a fourth location message is sent to the LMF, which includes the LCS association identifier.

[0061] In some implementations, the processor is also used for:

[0062] By receiving a first indication message from the transceiver to stop location measurement of the terminal device, the positioning session resources of the terminal device are released; or...

[0063] The transceiver receives a second indication message to continue location measurement of the terminal device, and retains the location session resources of the terminal device; the location session resources include the LCS association identifier.

[0064] In some implementations, the processor is also used for:

[0065] The transceiver receives an event report confirmation message sent by the LMF, which includes either a first indication message or a second indication message.

[0066] In some implementations, the processor is used for:

[0067] The location session resources of the terminal device are released within a first preset time period, or after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0068] A sixth aspect of this disclosure provides a location management device, including a memory, a transceiver, and a processor:

[0069] Memory is used to store computer programs; transceiver is used to send and receive data under the control of the processor; processor is used to read the computer programs from memory and perform the following operations:

[0070] The receiver receives event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element. The LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment.

[0071] Send an event report confirmation message to the AMF.

[0072] In some implementations, the processor is also used for:

[0073] The receiver sends a first location message to the AMF, which includes the LCS association identifier and the LMF identifier.

[0074] AMF is used to send a second location message to the terminal device after receiving the first location message. The second location message includes a routing identifier, the value of which is the LMF identifier.

[0075] In some implementations, the processor is also used for:

[0076] The receiver receives the fourth positioning message sent by the AMF, which includes the LCS association identifier.

[0077] The fourth location message is sent by the AMF after it receives the third location message from the terminal device. The third location message includes a routing identifier.

[0078] In some implementations, the processor is also used for:

[0079] The event report confirmation message includes a first indication message for indicating to stop location measurement of the terminal device, and the AMF is used to release the location session resources of the terminal device.

[0080] Alternatively, the event report confirmation message may include a second indication message for instructing continued location measurement of the terminal device, wherein the AMF is used to reserve the location session resources of the terminal device;

[0081] The location session resource includes the LCS association identifier.

[0082] In some implementations, the AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0083] A seventh aspect of this disclosure provides an auxiliary delayed positioning device, comprising:

[0084] The sending unit is used to send event reports to the Access and Mobility Management Function (AMF) network element. The AMF is used to receive the event reports, generate the Location Service (LCS) association identifier, and send the LCS association identifier and the event report to the Location Management Function (LMF) network element.

[0085] The receiving unit is used to receive event report confirmation messages sent by the AMF.

[0086] An eighth aspect of this disclosure provides an auxiliary delayed positioning device, comprising:

[0087] The receiving unit is used to receive event reports sent by the terminal device;

[0088] The sending unit is used to send event reports and location service (LCS) association identifiers to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

[0089] A ninth aspect of this disclosure provides an auxiliary delayed positioning device, comprising:

[0090] The receiving unit is used to receive event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element. The LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment.

[0091] The sending unit is used to send event report confirmation messages to the AMF.

[0092] A tenth aspect of this disclosure provides a processor-readable storage medium storing a program for causing a processor to perform the method described in any one of the first to third aspects described above.

[0093] The technical solution provided in this disclosure has the following advantages compared with related technologies:

[0094] In this embodiment, after the terminal device sends an event report to the AMF, the AMF generates an LCS association identifier, enabling the AMF to recognize the LCS association identifier and associate it with the context of the positioning session. By sending the event report and the LCS association identifier generated by the AMF to the LMF, the LMF can initiate a delayed positioning process based on the LCS association identifier, thereby ensuring the normal execution of the delayed positioning process, improving the reliability of delayed positioning execution, and solving the problem in related technologies where the delayed positioning process cannot be executed normally after the AMF releases positioning session resources and uses the delayed routing identifier as the LCS association identifier. Attached Figure Description

[0095] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0096] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0097] Figure 1 This is a schematic diagram of the delayed location request initiation process provided by related technologies;

[0098] Figure 2 This is a flowchart of the UE positioning process provided by related technologies;

[0099] Figure 3 This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure;

[0100] Figure 4 This is a flowchart of a UE positioning process provided in an embodiment of this disclosure;

[0101] Figure 5 This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure;

[0102] Figure 6 This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure;

[0103] Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure;

[0104] Figure 8 This is a schematic diagram of the structure of an access and mobility management device provided in an embodiment of this disclosure;

[0105] Figure 9This is a schematic diagram of the structure of a location management device provided in an embodiment of this disclosure. Detailed Implementation

[0106] In this embodiment of the invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0107] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0108] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0109] This disclosure provides a delayed positioning method and apparatus to solve the problem in the related art where the delayed positioning process cannot be executed normally due to the release of positioning session resources (including LCS association identifiers bound to the positioning session).

[0110] The methods and apparatus provided in the embodiments of this disclosure are based on the same application concept. Since the methods and apparatus solve problems in similar principles, the implementation of the apparatus and methods can refer to each other, and repeated parts will not be described again.

[0111] Example, Figure 1 This is a schematic diagram illustrating the delayed location request initiation process provided by related technologies. See also... Figure 1 The delayed location request initiation process provided by the relevant technologies includes at least the following steps 1-15:

[0112] Step 1: The location requester (such as an LCS client, Network Exposure Function (NEF), Application Function (AF), etc.) initiates a delayed location request to the Gateway Mobile Location Center (GMLC). The GMLC obtains user data from the User Data Management (UDM) and sends the delayed location request to the UE's serving AMF. The AMF then requests the UE to verify privacy requirements.

[0113] Step 2: After selecting a target LMF based on parameters such as LMF capabilities, LMF load, and location request type, the AMF sends a location request message to the target LMF (i.e., ...). Figure 1 The Nlmf_Location_DetermineLocation Request message shown contains location-related parameters received by the AMF from the GMLC, such as the location request type, GMLC address, and scheduled location time. It also includes parameters generated by the AMF itself, including the LCS Correlation identifier, which identifies the current location session within the AMF. This identifier will be used in subsequent UE location steps.

[0114] Step 3, UE location process. This process assumes that the target LMF has received the LCS association identifier transmitted from the AMF.

[0115] Example, Figure 2 It is a flowchart of the UE positioning process provided by related technologies, such as Figure 2 As shown. In some implementations, the UE positioning process includes steps 21-27.

[0116] In step 21, the target LMF uses the service operation Namf_Communication_N1N2MessageTransfer to request the AMF to transmit a downlink location message. This message may use the LCS association identifier as a session identifier, for example.

[0117] In steps 22-23, the network-triggered service request process and downlink NAS transmission process are executed. The AMF uses a downlink non-access stratum (NAS) transmission (DL NAS TRANSPORT) message to send a downlink location message to the UE. The message contains a routing identifier, which is set to the LCS association identifier.

[0118] In steps 24-26, the UE performs positioning measurements and calculations and sends an uplink positioning message to the AMF. The uplink NAS transfer message contains the routing identifier (i.e., LCS association identifier) ​​received in step 3 above.

[0119] In step 27, the AMF uses the service operation Namf_Communication_N1InfoNotify to transmit the uplink location message to the target LMF, carrying the LCS association identifier.

[0120] UE positioning can be achieved through steps 21-27 above. It should be noted that the above process is only a general description of UE positioning, not a detailed explanation. For a detailed process of UE positioning, please refer to the relevant technologies, which will not be repeated here.

[0121] exist Figure 1 In the illustrated process, in steps 4-5, the target LMF sends a delayed location request via the AMF (i.e., Figure 1 The LCS cycle shown in the figure (trigger location call request) is sent to the UE, and the UE sends a response message to the target LMF through the AMF (i.e., Figure 1 The LCS periodic location call response is shown in the diagram. After receiving a delayed location request, the UE monitors for events and sends event reports based on the content of the delayed location request. These events can be one or more of the following: UE availability events, area events, periodic location events, and motion events. Availability events refer to events where the UE and core network re-establish a connection, typically used when the UE temporarily loses wireless connectivity or deregisters. Area events refer to events where the UE enters, leaves, or remains within a predefined geographical area. Periodic location events refer to events where the UE periodically sends event reports to the network. Motion events refer to events where the UE triggers a motion event report when the straight-line distance between the UE's current location and the last location report exceeds a predefined value.

[0122] It is important to note that the delayed location request sent to the UE includes a deferred routing identifier. This deferred routing identifier can be the identifier of the target LMF (Local Management Function), hereinafter referred to as the LMF identifier. This identifier can be globally unique (e.g., an IP address, a Universally Unique Identifier (UUID), or a Uniform Resource Identifier (URI)) or locally unique. The deferred routing identifier is primarily used by the AMF to route event reports to the target LMF during subsequent event reporting.

[0123] Step 6: The target LMF responds to the request in Step 2 by calling the service operation Nlmf_Location_DetermineLocation Response.

[0124] Step 7: After receiving the Nlmf_Location_Determined Location response from the target LMF, the AMF returns the initial positioning result (i.e., the positioning result obtained in Step 3) to the requester via a location event notification. It is important to note that after Step 7, the AMF releases all positioning session resources, including the LCS association identifier bound to the positioning session. The binding of the LCS association identifier to the positioning session can be understood as follows: after establishing a positioning session, the AMF associates its own generated LCS association identifier with that positioning session; the LCS association identifier associated with the positioning session can serve as the session identifier for the positioning session.

[0125] Steps 8-10: The UE detects the event and obtains the location measurement results. If the UE is in an idle state, it initiates a UE-triggered service request process.

[0126] In step 11, the UE sends an event report to the serving AMF, which then forwards it to the target LMF. Simultaneously, the UE also sends the "delayed routing identifier" received in step 4 to the AMF. The AMF uses this identifier to locate the target LMF and sends it as the LCS association identifier to the target LMF.

[0127] It is important to note that since the location session resources have been released at this point, the relevant technologies will send the delayed routing identifier as the LCS association identifier to the target LMF. Additionally, due to factors such as UE movement and AMF changes, the UE's serving AMF may differ from the AMF in the previous steps.

[0128] Step 12: After receiving the event report, the target LMF returns an event report confirmation message to the UE.

[0129] Step 13, UE positioning process. This process is the same as step 3.

[0130] Step 14: The target LMF sends the event report and location results to the requester.

[0131] Step 15: The UE continues to monitor location events.

[0132] Depend on Figure 1 and Figure 2 As can be seen from the process shown, on the one hand, in Figure 1In steps 4-5 of the process, the LMF identifier is sent to the UE as a delayed routing identifier. After step 7, the AMF releases all location session resources, including the LCS association identifier bound to the location session. To enable the UE's messages to be sent to the target LMF, step 11 sends the delayed route to the AMF along with the event report. The AMF then sends the delayed route identifier as the LCS association identifier along with the event report to the target LMF. Upon receiving the event report, the target LMF uses the LCS association identifier (now the delayed routing identifier, i.e., the LMF identifier) ​​as the location session identifier in the event report confirmation message it sends back to the UE. However, the delayed routing identifier is primarily used to route messages to the target LMF and cannot be used as the location session identifier. Therefore, the AMF cannot associate the LMF with the location session after receiving the event report confirmation message. Furthermore, after step 11, the LCS association identifier has become the delayed routing identifier; see [link to relevant documentation]. Figure 2 The positioning process shown assumes that the target LMF has received the LCS association identifier sent by the AMF. However, after step 7, the LCS association identifier generated by the AMF has been released. In the UE positioning process after step 11, there is actually no real LCS association identifier; instead, a delayed routing identifier is used instead. Therefore, the requirement of a true LCS association identifier is not met. Figure 2 The prerequisites for the positioning process shown are therefore Figure 2 The positioning process shown cannot be executed normally. To address the issue of UE positioning failing due to unmet preconditions, related technologies have proposed a scheme where the target LMF generates a new LCS association identifier after receiving an event report, and sends the new LCS association identifier and an event report confirmation message to the AMF. However, since this LCS association identifier is not generated by the AMF, the AMF still cannot recognize the identifier, cannot associate it with a specific positioning session, and therefore cannot continue the subsequent positioning process.

[0133] To address the aforementioned problems in related technologies, this disclosure provides a delayed positioning method. For example, Figure 3 This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure. Figure 3 As shown, the method includes:

[0134] Step 301: The AMF receives the event report sent by the terminal device.

[0135] The terminal devices involved in the embodiments of this disclosure may be devices that provide location services to users, devices that provide voice and / or data connectivity, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in 5G or 6G systems, the terminal device may be called User Equipment (UE). Wireless terminal devices may be USB storage devices, other personal computer memory devices, and dongles. They may also communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices may be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they may be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablets, and Machine-type Communication (MTC) terminal devices. Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile terminals, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers / modems that meet the limitations of this definition, but are not limited to these specific embodiments in this disclosure.

[0136] In this embodiment, after detecting a preset event (such as one or more of a User Equipment Availability event, Area event, Periodic location event, and Motion event), the terminal device sends an event report and a delayed routing identifier to the AMF. The delayed routing identifier is sent to the terminal device by the AMF via a delayed location request. Specifically, in this embodiment, the delayed routing identifier can be an LMF identifier, used to route messages from the terminal device to the LMF. The LMF identifier can be a globally unique identifier (such as an IP address, a Universally Unique Identifier (UUID), a Fully Qualified Domain Name (FQDN), or a Uniform Resource Identifier (URI)) or a locally unique identifier. For ease of understanding, the LMF identifier involved in this embodiment can be understood as an FQDN. In related technologies, the LMF identifier is usually a UUID, while the LMF identifier in this embodiment uses an FQDN to directly identify the identified object as an LMF. For example, in an LMF identifier example, the LMF identifier could be "LMF1.mnc00.mcc460.3gpp.org". In this example, it is intuitive to read that the object identified by this FQDN is LMF1. Of course, this is just an example to illustrate the LMF identifier, not the only valid one.

[0137] It should be noted that, in this embodiment of the present disclosure, the AMF has already released the location session resources of the terminal device as referred to in this embodiment of the present disclosure, including the LCS association identifier bound to the location session of the terminal device.

[0138] Step 302: Send the event report and location service (LCS) association identifier to the LMF. The LCS association identifier is generated after receiving the event report sent by the terminal device.

[0139] After receiving the event report and delayed routing identifier from the terminal device, the AMF generates a new LCS association identifier and establishes a location session for the terminal device. The newly generated LCS association identifier is then associated with this location session; alternatively, it can be described as binding the newly generated LCS association identifier to the terminal device's location session. The LCS association identifier bound to the location session can serve as the session identifier for that location session. Following this, the AMF locates the corresponding LMF based on the delayed routing identifier and sends the event report and LCS association identifier to the LMF. Upon receiving the event report and LCS association identifier, the LMF sends an event report confirmation message to the AMF and uses the LCS association identifier as the session identifier.

[0140] Since the LCS association identifier is generated by the AMF, the AMF can recognize it and associate the event report confirmation message sent by the LMF with the location session of the terminal device. This solves the problem in related technologies where, after the AMF releases the location session resources of the terminal device, using the delayed routing identifier as the LCS association identifier fails to associate the location session context. Furthermore, after the new LCS association identifier generated by the AMF is sent to the LMF, the preconditions for the UE location process are met, thus ensuring that the UE location process can be executed normally.

[0141] In this embodiment, after the terminal device sends an event report to the AMF, the AMF generates an LCS association identifier, enabling the AMF to recognize the LCS association identifier and associate it with the context of the positioning session. By sending the event report and the LCS association identifier generated by the AMF to the LMF, the LMF can initiate a delayed positioning process based on the LCS association identifier, thereby ensuring the normal execution of the delayed positioning process, improving the reliability of delayed positioning execution, and solving the problem in related technologies where the delayed positioning process cannot be executed normally after the AMF releases positioning session resources and uses the delayed routing identifier as the LCS association identifier.

[0142] Example, Figure 4 This is a flowchart of a UE positioning process provided in an embodiment of this disclosure, such as... Figure 4 As shown, in some implementations, after receiving the event report and LCS association identifier sent by the AMF, the LMF can implement the UE positioning process based on the following procedure.

[0143] Step 41: The AMF receives the first location message from the LMF, which includes the LCS association identifier and the LMF identifier.

[0144] For example, in some implementations, the LMF can transmit the first location message to the AMF via a preset message (such as the Namf_communication_N1N2 message, but not limited to the Namf_communication_N1N2 message). The first location message can be a downlink location message. The first location message includes an LCS association identifier (i.e., an LCS association identifier that the AMF can generate after receiving an event report) and an LMF identifier. The LMF identifier can be a globally unique identifier (such as an IP address, a Universally Unique Identifier (UUID), a Fully Qualified Domain Name (FQDN), or a Uniform Resource Identifier (URI)) or a locally unique identifier.

[0145] Step 42: AMF sends a second location message to the terminal device. The second location message includes a routing identifier, and the routing identifier is set to the LMF identifier.

[0146] In one exemplary implementation, the AMF can transmit the second location message to the terminal device via a downlink NAStransport message. In this embodiment, the second location message can be understood as a downlink location message.

[0147] In this embodiment of the disclosure, the routing identifier included in the second location message is an LMF identifier.

[0148] It should be noted that in the second location message in this embodiment, i.e., the downlink location message sent by the AMF to the terminal device, the routing identifier is the LMF identifier, not the LCS association identifier. This is because in this embodiment, the LCS generated by the AMF after receiving the event report is only transmitted to the LMF and not to the UE. Therefore, in order for the terminal device's message to reach the LMF, the routing identifier is set to the LMF identifier.

[0149] Step 43: The AMF receives the third location message sent by the terminal device. The third location message includes the routing identifier.

[0150] For example, after receiving the second positioning message, the terminal device performs positioning measurement and calculation, and sends a third positioning message to the AMF. This third positioning message is an uplink positioning message, which can be transmitted to the AMF via an uplink NAS transfer (UL NASTRANSPORT) message.

[0151] It should be noted that since the routing identifier is set to LMF identifier in step 42 instead of LCS association identifier, the routing identifier carried by the terminal device in the third location message is set to LMF identifier instead of LCS association identifier.

[0152] Step 44: AMF sends a fourth location message to LMF based on the routing identifier. The fourth location message includes the LCS association identifier.

[0153] After receiving the third location message, AMF obtains the routing identifier, i.e., the LMF identifier, from it. Based on this LMF identifier, the fourth location message can be transmitted to the LMF. The fourth location message is an uplink location message, which can be transmitted to the LMF via the Namf_communication_N1 information notification.

[0154] It should be noted that, since the LCS association identifier in this embodiment is generated by the AMF itself and sent to the LMF after receiving the event report from the terminal device, and the AMF establishes a location session for the terminal device after receiving the event report from the terminal device and binds the location session with the LCS association identifier, after receiving the third location message sent by the terminal device (sent on the established location session), the AMF can find the LCS association identifier bound to the location session of the terminal device based on the binding relationship, and send the LCS association identifier as the session identifier in the fourth location message to the LMF.

[0155] In this embodiment of the disclosure, after receiving an event report from the terminal device, the AMF generates a new LCS association identifier. The LMF triggers the UE positioning process based on the newly generated LCS association identifier by the AMF, which can ensure that the UE positioning process is executed normally and solves the problem that the UE positioning process cannot be executed normally after the delayed routing identifier is used as the LCS association identifier in related technologies.

[0156] For example, in some embodiments of this disclosure, after sending an event report to the LMF, if the AMF receives a first instruction indicating to stop location measurement of the terminal device, it releases the location session resources of the terminal device; or if it receives a second instruction indicating to continue location measurement of the terminal device, it retains the location session resources of the terminal device. The timing of the AMF releasing the location session resources can be set as needed. For example, in one feasible embodiment, the location session of the terminal device can be released within a first preset time after receiving the first instruction, or a timer can be set to release the location session resources after a second preset time after receiving the first instruction. The first preset time is earlier than the second preset time. Alternatively, the AMF can also release the location session resources if it does not receive the second instruction within a preset time after sending the event report to the LMF. Of course, this is merely an example and not a limitation.

[0157] It should be noted that the aforementioned first indication information and / or second indication information can be transmitted to the AMF through a preset transmission message or through an event report confirmation message. This embodiment of the disclosure does not specifically limit this.

[0158] In this embodiment of the disclosure, by releasing the location session resources of the terminal device when a first instruction is received to stop measuring the location of the terminal device, or when a second instruction is not received to continue measuring the location of the terminal device, the occupation of location session resources can be reduced, resources can be saved, and resource utilization can be improved.

[0159] Figure 5This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure, see [link to flowchart]. Figure 5 In some implementations, the delayed positioning method provided in this disclosure may include the following steps:

[0160] Step 501: The LMF receives the event report and LCS association identifier sent by the AMF. The LCS association identifier is generated by the AMF after receiving the event report sent by the terminal device.

[0161] Step 502: Send an event report confirmation message to the AMF.

[0162] In some implementations, after receiving the event report and LCS association identifier sent by the AMF, the LMF may include the step of sending a first location message to the AMF, the first location message including the LCS association identifier and the LMF identifier, wherein the AMF is used to send a second location message to the terminal device after receiving the first location message, the second location message including a routing identifier, the value of which is the LMF identifier.

[0163] In another implementation, the LMF may further include the step of receiving a fourth location message sent by the AMF, the fourth location message including an LCS association identifier; wherein the fourth location message is sent after the AMF receives a third location message from the terminal device, the third location message including a routing identifier.

[0164] In another implementation, the event report confirmation message sent by the LMF to the AMF may include a first indication message for indicating to stop location measurement of the terminal device, and the AMF may release the location session resources of the terminal device; or, the event report confirmation message may include a second indication message for indicating to continue location measurement of the terminal device, and the AMF may retain the location session resources of the terminal device; the location session resources include an LCS association identifier.

[0165] In another implementation, the AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0166] The method for LMF execution in this disclosure embodiment, as well as the specific implementation and beneficial effects of the method, can be found in the above. Figure 3 or Figure 4 The method of LMF execution in the embodiments will not be described in detail here.

[0167] Figure 6 This is a flowchart of a delayed positioning method provided in an embodiment of this disclosure, see [link to flowchart]. Figure 6In some other embodiments, the delayed positioning method provided by this disclosure may include the following steps:

[0168] Step 601: The terminal device sends an event report to the AMF. The AMF receives the event report, generates an LCS association identifier, and sends the LCS association identifier and the event report to the LMF.

[0169] Step 602: Receive the event report confirmation message sent by AMF.

[0170] In some implementations, the terminal device may further include a step of receiving a second location message sent by the AMF, wherein the second location message includes a routing identifier, and the routing identifier is set to the LMF identifier. It should be noted that the second location message is sent by the AMF after receiving the first location message sent by the LMF, and the first location message includes an LCS association identifier and the LMF identifier.

[0171] Furthermore, after receiving the second location message sent by the AMF, the terminal device may also include the step of sending a third location message to the AMF, wherein the third location message includes a routing identifier, and the AMF uses the routing identifier to send a fourth location message to the LMF, wherein the fourth location message includes an LCS association identifier.

[0172] The method executed by the terminal device in this embodiment, as well as the specific implementation and beneficial effects of the method, can be found in the above description. Figure 3 or Figure 4 The method executed by the terminal device in the embodiments will not be described in detail here.

[0173] Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure, such as... Figure 7 As shown, the terminal device may include:

[0174] Memory 71, transceiver 72, processor 73:

[0175] Memory 71 is used to store computer programs; transceiver 72 is used to send and receive data under the control of the processor; processor 73 is used to read the computer program from the memory and perform the following operations:

[0176] The transceiver sends event reports to the Access and Mobility Management Function (AMF) network element. The AMF receives the event reports, generates a Location Service (LCS) association identifier, and sends the LCS association identifier and event report to the Location Management Function (LMF) network element.

[0177] Receive event report confirmation messages sent by AMF.

[0178] In some implementations, the processor is also used for:

[0179] The transceiver receives a second location message sent by the AMF. This second location message includes a routing identifier, the value of which is the LMF identifier. The second location message is sent by the AMF after receiving the first location message from the LMF. The first location message includes an LCS association identifier and the LMF identifier.

[0180] A third location message is sent to the AMF, which includes a routing identifier. The AMF uses this routing identifier to send a fourth location message to the LMF, which includes an LCS association identifier.

[0181] exist Figure 7 In this context, the bus interface can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors (represented by a processor) and memories (represented by memory). The bus interface can also link various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. A transceiver can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 74 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0182] The processor is responsible for managing the bus architecture and general processing, while the memory stores the data used by the processor during operation.

[0183] Optionally, the processor can be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor can also adopt a multi-core architecture.

[0184] The processor executes any of the methods described in the embodiments of this disclosure according to the obtained executable instructions by invoking a program stored in memory. The processor and memory may also be physically separated.

[0185] The terminal device provided in this disclosure embodiment, its execution method, and beneficial effects can be found in the above description. Figure 3 or Figure 4The execution method and beneficial effects of the terminal device will not be elaborated here.

[0186] Figure 8 This is a schematic diagram of the structure of an access and mobility management device provided in an embodiment of this disclosure, as shown below. Figure 8 As shown, the access and mobility management device may include:

[0187] The system includes a memory 81, a transceiver 82, and a processor 83; wherein the memory 81, transceiver 82, and processor 83 are connected to a bus interface.

[0188] Memory 81 is used to store computer programs; transceiver 82 is used to send and receive data under the control of the processor; processor 83 is used to read the computer program from the memory and perform the following operations:

[0189] Receive event reports sent by terminal devices via transceiver; and

[0190] Send event reports and location service (LCS) association identifiers to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

[0191] In some implementations, the processor is also used for:

[0192] Generate an LCS association identifier and bind the LCS association identifier to the location session of the terminal device.

[0193] In some implementations, the processor is also used for:

[0194] The transceiver receives the first location message sent by the LMF (Leadership Provider) via the LCS (Leadership Component) identifier; the first location message includes the LCS association identifier and the LMF identifier; and

[0195] A second location message is sent to the terminal device. The second location message includes a routing identifier, and the routing identifier is set to the LMF identifier.

[0196] In some implementations, the LMF identifier can be a fully qualified domain name (FQDN).

[0197] In some implementations, the processor is also used for:

[0198] The transceiver receives a third location message sent by the terminal device, the third location message including a routing identifier; and

[0199] Based on the routing identifier, a fourth location message is sent to the LMF, which includes the LCS association identifier.

[0200] In some implementations, the processor is also used for:

[0201] By receiving a first indication message from the transceiver to stop location measurement of the terminal device, the positioning session resources of the terminal device are released; or...

[0202] The transceiver receives a second indication message to continue location measurement of the terminal device, and retains the location session resources of the terminal device; the location session resources include the LCS association identifier.

[0203] In some implementations, the processor is also used for:

[0204] The transceiver receives an event report confirmation message sent by the LMF, which includes either a first indication message or a second indication message.

[0205] In some implementations, the processor is used for:

[0206] The location session resources of the terminal device are released within a first preset time period, or after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0207] The access and mobility management function apparatus provided in this disclosure embodiment, its execution method and beneficial effects can be found in the above description. Figure 3 or Figure 4 The implementation method and beneficial effects of the Access and Mobility Management Function (AMF) network element will not be elaborated here.

[0208] Figure 9 This is a schematic diagram of the structure of a location management device provided in an embodiment of this disclosure, as shown below. Figure 9 As shown, in one embodiment of this disclosure, the location management device includes:

[0209] The system includes a memory 91, a transceiver 92, and a processor 93; the memory 91, transceiver 92, and processor 93 are all connected to a bus interface.

[0210] Memory 91 is used to store computer programs; transceiver 92 is used to send and receive data under the control of the processor; processor 93 is used to read the computer programs from the memory and perform the following operations:

[0211] The receiver receives event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element. The LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment.

[0212] Send an event report confirmation message to the AMF.

[0213] In some implementations, the processor is also used for:

[0214] The receiver sends a first location message to the AMF, which includes the LCS association identifier and the LMF identifier.

[0215] AMF is used to send a second location message to the terminal device after receiving the first location message. The second location message includes a routing identifier, the value of which is the LMF identifier.

[0216] In some implementations, the processor is also used for:

[0217] The receiver receives the fourth positioning message sent by the AMF, which includes the LCS association identifier.

[0218] The fourth location message is sent by the AMF after it receives the third location message from the terminal device. The third location message includes a routing identifier.

[0219] In some implementations, the processor is also used for:

[0220] The event report confirmation message includes a first indication message for indicating to stop location measurement of the terminal device, and the AMF is used to release the location session resources of the terminal device.

[0221] Alternatively, the event report confirmation message may include a second indication message for instructing continued location measurement of the terminal device, wherein the AMF is used to reserve the location session resources of the terminal device;

[0222] The location session resource includes the LCS association identifier.

[0223] In some implementations, the AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

[0224] The location management device provided in this disclosure embodiment, its execution method and beneficial effects can be found in the above description. Figure 3 or Figure 4 The execution method and beneficial effects of the location management network element LMF will not be elaborated here.

[0225] For example, in one embodiment of this disclosure, an auxiliary delayed positioning device is provided, comprising:

[0226] The sending unit is used to send event reports to the Access and Mobility Management Function (AMF) network element. The AMF is used to receive the event reports, generate the Location Service (LCS) association identifier, and send the LCS association identifier and the event report to the Location Management Function (LMF) network element.

[0227] The receiving unit is used to receive event report confirmation messages sent by the AMF.

[0228] In another embodiment of this disclosure, an auxiliary delayed positioning device is also provided, comprising:

[0229] The receiving unit is used to receive event reports sent by the terminal device;

[0230] The sending unit is used to send event reports and location service (LCS) association identifiers to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

[0231] In another embodiment of this disclosure, an auxiliary delayed positioning device is also provided, comprising:

[0232] The receiving unit is used to receive event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element. The LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment.

[0233] The sending unit is used to send event report confirmation messages to the AMF.

[0234] It should be noted that the auxiliary delay positioning device provided in this embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0235] It should also be noted that the division of units in the above-mentioned auxiliary delay positioning device in this disclosure is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0236] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure.

[0237] The sending unit is used to send event report confirmation messages to the AMF.

[0238] This disclosure also provides a processor-readable storage medium storing a program for causing a processor to perform the method of any of the above method embodiments.

[0239] In this embodiment of the disclosure, the processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0240] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0241] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus, and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0242] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0243] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A delayed positioning method, characterized in that, include: An event report is sent to the Access and Mobility Management Function (AMF) network element. The AMF is used to receive the event report, generate a Location Service (LCS) association identifier, and send the LCS association identifier and the event report to the Location Management Function (LMF) network element. Receive the event report confirmation message sent by the AMF.

2. The method according to claim 1, characterized in that, The method further includes: The system receives a second location message sent by the AMF, the second location message including a routing identifier, the routing identifier being an LMF identifier. The second location message is sent by the AMF after receiving a first location message sent by the LMF, the first location message including the LCS association identifier and the LMF identifier. A third location message is sent to the AMF, the third location message including the routing identifier. The AMF is used to send a fourth location message to the LMF based on the routing identifier, the fourth location message including the LCS association identifier.

3. A delayed positioning method, characterized in that, The method includes: Receive event reports sent by terminal devices; The event report and location service (LCS) association identifier are sent to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

4. The method according to claim 3, characterized in that, Before sending the event report and location service (LCS) association identifier to the location management function (LMF) network element, the method further includes: Generate the LCS association identifier and bind the LCS association identifier to the location session of the terminal device.

5. The method according to claim 3, characterized in that, The method further includes: Receive a first location message sent by the LMF, wherein the first location message includes the LCS association identifier and the LMF identifier; A second location message is sent to the terminal device. The second location message includes a routing identifier, the value of which is the LMF identifier.

6. The method according to claim 5, characterized in that, The LMF identifier is the fully qualified domain name (FQDN).

7. The method according to claim 5, characterized in that, The method further includes: Receive a third location message sent by the terminal device, the third location message including the routing identifier; Based on the routing identifier, a fourth location message is sent to the LMF, the fourth location message including the LCS association identifier.

8. The method according to claim 3, characterized in that, The method further includes: Receive a first indication message for instructing the cessation of location measurement of the terminal device, and release the location session resources of the terminal device; Alternatively, receive a second indication message for instructing continued location measurement of the terminal device, and retain the location session resources of the terminal device; The location session resource includes the LCS association identifier.

9. The method according to claim 8, characterized in that, The method includes: Receive the event report confirmation message sent by the LMF, wherein the event report confirmation message includes either the first indication information or the second indication information.

10. The method according to claim 8, characterized in that, The release of the terminal device's location session resources includes: The location session resources of the terminal device are released within a first preset time period, or after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

11. A delayed positioning method, characterized in that, The method includes: The system receives event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element, wherein the LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment. Send an event report confirmation message to the AMF.

12. The method according to claim 11, characterized in that, The method further includes: Send a first location message to the AMF, the first location message including the LCS association identifier and the LMF identifier; The AMF is used to send a second location message to the terminal device after receiving the first location message. The second location message includes a routing identifier, and the value of the routing identifier is the LMF identifier.

13. The method according to claim 12, characterized in that, The method further includes: Receive the fourth location message sent by the AMF, the fourth location message including the LCS association identifier; The fourth location message is sent by the AMF after it receives the third location message from the terminal device, and the third location message includes the routing identifier.

14. The method according to claim 11, characterized in that, The event report confirmation message includes a first indication message for indicating to stop location measurement of the terminal device, and the AMF is used to release the location session resources of the terminal device. Alternatively, the event report confirmation message may include a second indication message for instructing continued location measurement of the terminal device, wherein the AMF is used to reserve the location session resources of the terminal device; The location session resource includes the LCS association identifier.

15. The method according to claim 14, characterized in that, The AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

16. A terminal device, characterized in that, include: Memory, transceiver, processor: Memory, used to store computer programs; Transceiver, used to send and receive data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: The transceiver sends an event report to the Access and Mobility Management Function (AMF) network element. The AMF receives the event report, generates a Location Service (LCS) association identifier, and sends the LCS association identifier and the event report to the Location Management Function (LMF) network element. as well as Receive the event report confirmation message sent by the AMF.

17. The terminal device according to claim 16, characterized in that, The processor is also used for: The transceiver receives a second location message sent by the AMF, the second location message including a routing identifier whose value is an LMF identifier. The second location message is sent by the AMF after receiving a first location message sent by the LMF, the first location message including the LCS association identifier and the LMF identifier. A third location message is sent to the AMF, the third location message including the routing identifier. The AMF is used to send a fourth location message to the LMF based on the routing identifier, the fourth location message including the LCS association identifier.

18. An access and mobility management device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Receive event reports sent by terminal devices via transceiver; and The event report and location service (LCS) association identifier are sent to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

19. The apparatus according to claim 18, characterized in that, The processor is also used for: Generate the LCS association identifier and bind the LCS association identifier to the location session of the terminal device.

20. The apparatus according to claim 18, characterized in that, The processor is also used for: The transceiver receives a first location message sent by the LMF, the first location message including the LCS association identifier and the LMF identifier; and A second location message is sent to the terminal device. The second location message includes a routing identifier, the value of which is the LMF identifier.

21. The apparatus according to claim 20, characterized in that, The LMF identifier is the fully qualified domain name (FQDN).

22. The apparatus according to claim 20, characterized in that, The processor is also used for: The transceiver receives a third location message sent by the terminal device, the third location message including the routing identifier; and Based on the routing identifier, a fourth location message is sent to the LMF, the fourth location message including the LCS association identifier.

23. The apparatus according to claim 18, characterized in that, The processor is also used for: By receiving a first indication message from the transceiver to stop location measurement of the terminal device, the positioning session resources of the terminal device are released; or... The transceiver receives a second indication message to continue location measurement of the terminal device, and retains the location session resources of the terminal device; the location session resources include the LCS association identifier.

24. The apparatus according to claim 23, characterized in that, The processor is also used for: The transceiver receives the event report confirmation message sent by the LMF, which includes either the first indication information or the second indication information.

25. The apparatus according to claim 23, characterized in that, The processor is used for: The location session resources of the terminal device are released within a first preset time period, or after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

26. A location management device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: The receiver receives event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element, wherein the LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment. as well as Send an event report confirmation message to the AMF.

27. The apparatus according to claim 26, characterized in that, The processor is also used for: The receiver sends a first location message to the AMF, the first location message including the LCS association identifier and the LMF identifier; The AMF is used to send a second location message to the terminal device after receiving the first location message. The second location message includes a routing identifier, and the value of the routing identifier is the LMF identifier.

28. The apparatus according to claim 27, characterized in that, The processor is also used for: The receiver receives the fourth positioning message sent by the AMF, which includes the LCS association identifier; The fourth location message is sent by the AMF after it receives the third location message from the terminal device, and the third location message includes the routing identifier.

29. The apparatus according to claim 26, characterized in that, The event report confirmation message includes a first indication message for indicating to stop location measurement of the terminal device, and the AMF is used to release the location session resources of the terminal device. Alternatively, the event report confirmation message may include a second indication message for instructing continued location measurement of the terminal device, wherein the AMF is used to reserve the location session resources of the terminal device; The location session resource includes the LCS association identifier.

30. The apparatus according to claim 29, characterized in that, The AMF releases the location session resources of the terminal device, including releasing the location session resources of the terminal device within a first preset time period, or releasing the location session resources after a second preset time period, wherein the first preset time period is earlier than the second preset time period.

31. An auxiliary delay positioning device, characterized in that, include: The sending unit is used to send an event report to the Access and Mobility Management Function (AMF) network element. The AMF is used to receive the event report, generate a Location Service (LCS) association identifier, and send the LCS association identifier and the event report to the Location Management Function (LMF) network element. The receiving unit is used to receive the event report confirmation message sent by the AMF.

32. An auxiliary delay positioning device, characterized in that, include: The receiving unit is used to receive event reports sent by the terminal device; The sending unit is used to send the event report and the location service (LCS) association identifier to the location management function (LMF) network element. The LCS association identifier is generated after receiving the event report sent by the terminal device.

33. An auxiliary delay positioning device, characterized in that, include: The receiving unit is used to receive event reports and LCS association identifiers sent by the Access and Mobility Management Function (AMF) network element, wherein the LCS association identifier is generated by the AMF after receiving the event reports sent by the terminal equipment. The sending unit is used to send an event report confirmation message to the AMF.

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