WO2020173324A1

WO2020173324A1 - Method and device for acquiring location of terminal, network device and storage medium

Info

Publication number: WO2020173324A1
Application number: PCT/CN2020/075550
Authority: WO
Inventors: 杨立; 李振东; 马子江
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-02-26
Filing date: 2020-02-17
Publication date: 2020-09-03
Also published as: CN110536411A; CN110536411B

Abstract

Provided herein are a method and device for acquiring the location of a terminal, a network device and a storage medium. The method comprises: receiving a downlink message from an AMF network element, the downlink message comprising a location reporting indication and location reporting configuration information of a terminal at an auxiliary service side, and the location reporting configuration information comprising at least one location reporting event type; according to the location reporting indication, acquiring current location information of the terminal at the auxiliary service side; and in response to an event corresponding to the location reporting configuration information, sending an uplink message to the AMF network element, the uplink message comprising a current location information result of the terminal at the auxiliary service side.

Description

Terminal location acquisition method, device, network equipment and storage medium. This application requires the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910142651.7 on February 26, 2019. The entire content of this application is incorporated into this application by reference in. Technical field

This application relates to the field of communications, for example, to a method, device, network device, and storage medium for obtaining a terminal location. Background technique

The fifth generation land-based cellular mobile communication system includes a fifth generation core network (5 Generation Core, 5GC) and a next generation radio access network (Next Generation Radio Access Network, NG-RAN).

5 The GC includes network nodes such as Access Mobility Function (AMF) nodes, Session Management Function (SMF) nodes, and User Plane Function (UPF) nodes. NG-RAN includes at least two different radio access technology (Radio Access Technology, RAT) types of base stations, namely: the next-generation evolution based on the fourth-generation evolved base station (4 Generation evolved NodeB, 4G eNB) that continues to evolve smoothly The next generation base station (Next Generation evolved NodeB, ng-eNB) and the next generation base station (Next Generation NodeB, gNB) with a new physical layer air interface design. NG-RAN also includes interfaces between base stations and related network element entities. Among them, the ng-eNB air interface still supports the evolved Universal Terrestrial Radio Access (E-UTRA) RAT standard, and the gNB air interface supports the New Radio (NR) RAT standard.

When the user equipment (User Equipment, UE) is connected to the NG-RAN base station, the AMF can request the NG-RAN base station to report the UE’s single user location information (User Location Information, ULI) on the side of the primary base station. When an NG-RAN base station or multiple serving cell groups (Cell Group) are in a multi-connection mode, the AMF cannot perceive the UE's location information on the secondary base station side or the secondary serving cell and its aggregate information. Summary of the invention

The embodiment of the present application provides a method for acquiring a terminal location, including:

Receive a downlink message from an AMF network element, where the downlink message includes a position report indication and position report configuration information of the terminal on the secondary service side, and the position report configuration information includes at least one Location report event type;

According to the position report instruction, obtain the current position information of the terminal on the auxiliary service side; and in response to an event corresponding to the position report configuration information, send an uplink message to the AMF network element, where the uplink message includes The current location information result of the terminal on the auxiliary service side.

Send a downlink message to the primary base station, where the downlink message includes the terminal's location reporting indication on the secondary serving side and location reporting configuration information, the location reporting configuration information includes at least one location reporting event type, and the location reporting The indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side;

Receiving an uplink message sent by the primary base station in response to an event corresponding to the location reporting configuration information, where the uplink message includes the current location information result of the terminal on the secondary service side.

An embodiment of the present application provides a terminal location acquisition device, including:

The first receiving module is configured to receive a downlink message from an AMF network element, where the downlink message includes a position report indication of the terminal on the secondary service side and position report configuration information, and the position report configuration information includes at least one Location report event type;

A first obtaining module, configured to obtain the current location information of the terminal on the auxiliary service side according to the location reporting instruction;

The first sending module is configured to send an uplink message to the AMF network element in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the auxiliary service side.

The second sending module is configured to send a downlink message to the primary base station, where the downlink message includes a position report indication and position report configuration information of the terminal on the secondary serving side, and the position report configuration information includes at least one type of position report Event type, where the location report indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side;

The second receiving module is configured to receive an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the secondary service side.

An embodiment of the present application provides a network device. The network device includes a processor and a memory; the processor is configured to execute a program stored in the memory to implement any method in the embodiments of the present application. The embodiment of the present application provides a storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, any one of the methods in the embodiments of the present application is implemented.

According to the method, device, network equipment, and storage medium for obtaining terminal location provided by the embodiments of the present application, the location information of the terminal on the secondary service side can be obtained through the primary base station through the auxiliary service side location information reporting process between the AMF and the primary base station. The result is sent to the core network, so that the core network can reasonably perform policy configuration and management based on more complete location information. Description of the drawings

Figure 1 is an architecture diagram of a centralized NG-RAN base station (Centralized Unit, CU)/Distributed Unit (DU) air interface protocol stack without separation;

Figure 2 is the architecture diagram of the separated NG-RAN base station gNB CU/DU air interface protocol stack in the case of separation; Figure 3 is a schematic diagram of heterogeneous networks deployed in macro and micro cells with different RAT standards;

Fig. 4a and Fig. 4b are schematic diagrams of the UE in dual connection mode;

Figure 5 is a schematic diagram of ULI reporting when the UE is in a dual-connection working mode;

Fig. 6 shows a flowchart of a method for acquiring a terminal location according to an embodiment of the present application;

Fig. 7 shows a flowchart of a method for acquiring a terminal location according to an embodiment of the present application;

Fig. 8a is a schematic diagram of a scenario where the UE is in the ng-eNB NR Dual Connection (NGEN-DC) dual connection mode of the next-generation evolved base station;

Figure 8b is a flowchart of reporting user location information (Secondary Node User Location Information, SN-ULI) on the secondary base station side when the UE is in the NGEN-DC dual connection mode;

Figure 9a is a schematic diagram of a scenario where the UE is in a new wireless dual connection (NR Dual Connection, NR-DC) dual connection mode;

Figure 9b is a flowchart of SN-ULI reporting when the UE is in NR-DC dual connectivity mode;

Figure 10a is a schematic diagram of a scenario where the UE is in the NGEN-DC dual connection mode;

Figure 10b is a flowchart of SN-ULI reporting when the UE is in NGEN-DC dual connectivity mode;

Figure 11a is a schematic diagram of a scenario where the UE is in NR-DC dual connectivity mode;

Figure lib is the SN-ULI reporting flowchart when the UE is in NR-DC dual connectivity mode;

FIG. 12 shows a schematic structural diagram of a terminal location obtaining apparatus according to an embodiment of the present application;

FIG. 13 shows a schematic structural diagram of an apparatus for acquiring a terminal position according to an embodiment of the present application. detailed description Hereinafter, the embodiments of the present application will be described in detail with reference to the drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

NG-RAN base stations (gNB or ng-eNB) are connected to 5GC through standardized NG interfaces, including next generation control plane connections (Next Generation-Control Plane, NG-C) and next generation user plane connections (Next Generation-User Plane, NG-U ). NG-C is a 5G core network element control plane connection used for signaling transmission; NG-U is a 5G core network element user plane connection used for user data transmission. NG-RAN base stations (gNB or ng-eNB) are connected to each other through the Xn interface, including the control plane connection between NG-RAN base stations (Xn-Control Plane, Xn-C) and the user plane connection between NG-RAN base stations (Xn- User Plane, Xn-U ). Figure 1 is an architecture diagram of an aggregated (Aggregated) NG-RAN base station CU/DU air interface protocol stack without separation. Figure 2 is a diagram of the architecture of a separated (Disaggregated) NG-RAN base station gNB CU/DU air interface protocol stack. Taking the gNB-CU/DU separation of the Third Generation Partnership Project (3GPP) protocol as an example, a single gNB is separated into a single gNB-CU and multiple gNB-DU network node entities. They are interconnected through standardized F1 interfaces, including F1-C control plane connection and F1-U user plane connection. The external interfaces of the gNB after CU/DU separation and the non-separated gNB/ng-eNB are NG and Xn interfaces. The control plane connection of each network interface described above is used to transmit control signaling messages between network nodes, and the user plane connection is used to transmit user service data (packets). Next Generation Application Protocol (NGAP), XnAP, and F1AP are Radio Network Layer (RNL) protocols of NG-C, Xn-C, and Fl-C control planes, respectively. They are based on the transport network layer (Transport Network Layer, TNL) transport bearer (such as Streaming Control Transport Protocol (SCTP) connection) in the lower layer of the network to transmit control signaling on the corresponding interface. NG-U, Xn-U, F1-U user plane interface user service data frame, based on the lower layer of the network TNL transmission bearer (such as General Packet Radio Service (GPRS) Tunnel Protocol-User Plane, GTP) -U) tunnel) to transmit user service data (packets) on the corresponding interface.

In the future mixed deployment of heterogeneous macro and micro cells, there may be various types of RAN base stations with different RAT standards, different frequency bandwidths, and different wireless coverage capabilities, such as legacy eNB (legacy eNB), gNB, ng -eNB, wireless local area network access point (Wireless Local Area Networks Access Point, WLAN AP) and other base stations. As shown in Figure 3, in a certain physical area, a master base station (Master Node, MN) can be used to provide wireless macro coverage. In local hotspots or areas with weak coverage, numerous secondary base stations (SN) groups can be used to provide enhanced micro cell coverage, so as to improve network coverage capacity and overall performance. These different types of RAN base stations face the terminal UE and can provide wireless devices with different capabilities. Line access function and performance. The RAN base station and the terminal UE are connected to each other through the Uu air interface (i.e. wireless air interface) standardized by 3GPP, including the air interface control plane connection to carry the signaling radio bearer (SRB) and the air interface user plane connection to carry the data radio bearer (Data Radio Bearer, DRB ). Among them, SRB is used to transmit air interface control signaling, and DRB is used to transmit air interface user service data packets.

The 5G NG-RAN system supports terminal UE single connection (Single Connectivity, SC) and multiple connection modes. In the embodiments of the present application, the working mode of Dual/Multiple Connectivity (DC/MC) is collectively referred to as the multi-connection mode. In the SC mode, the UE has only one data transmission channel on both the air interface and the network side. In the DC/MC mode, the UE has two or more data transmission channels on the air interface or the network side, and the SRB or DRB bearer can be configured among multiple transmission channels. In Figure 4a and Figure 4b, the dotted line represents the control plane connection between the network element nodes, and the dotted line represents the user plane connection between the network element nodes. Figure 4a shows the SN termination (Terminated) mode. Between the network element node MN/SN and the UPF node (may be referred to as UPF), there are the following two NG-U interface data transmission channels. The first channel is the data transmission channel between UPF and MN provided by NG-U (MN), which is used to transmit specific protocol data unit (Protocol Data Unit, PDU) session (Session)/Quality of Service (Quality of Service, QoS) ) Uplink and downlink data packets carried on Flows. The establishment of this channel requires UPF to provide "MN side uplink data transmission channel address" and MN to provide "MN side downlink data transmission channel address". The above two transmission channel address information for the uplink and downlink pairing passes through the NG-C control plane signaling process To interactively complete. Similarly, the second channel is a data transmission channel between UPF and SN provided by NG-U (SN), which is used to transmit uplink and downlink data packets carried on specific PDU Session/QoS Flows. The establishment of this channel requires UPF to provide "SN side uplink data transmission channel address" and SN to provide "SN side downlink data transmission channel address". The two transmission channel address information of the above-mentioned uplink and downlink pairing pass NG-C+Xn-C. The two control plane signaling procedures are interactively completed. Figure 4b shows the MN Terminated mode, focusing on the MN and UPF. There is one NG-U interface data transmission channel as follows: NG-U (MN) provides a data transmission channel between UPF and MN. But there is no NG-U interface data transmission channel between SN and UPF. Compared with Figure 4a, Figure 4b has no NG-U (SN) channel, SN is completely transparent to 5GC, that is, 5GC cannot perceive the existence of SN. In addition, since there is no NG-C control plane link between the SN and the AMF node (may be abbreviated as AMF)/SMF node (may be abbreviated as /SMF), all the configuration information on the SN side (including the address information of the downlink transmission channel on the SN side) is The instance needs to be connected through the Xn-C control plane, and then forwarded to AMF/SMF through the MN relay.

When a terminal, for example, a UE and an NG-RAN base station are in a radio resource control (Radio Resource Control, RRC) connection state, the AMF of the core network can request the NG-RAN base station to report that the UE is on the side of the primary base station The location information, referred to as ULI. In this way, the core network can perceive the approximate cell-level location of the UE in the heterogeneous large network. Unlike obtaining accurate geographic location information of the UE through various positioning (Positioning) methods, the minimum accuracy of the ULI is the serving cell. The AMF senses the UE's ULI, which facilitates differentiated policy configuration and processing for different locations of the UE. For example, the AMF may request the NG-RAN base station to report the ULI of the UE. For example: request to directly report the information of the serving cell the UE is currently camping on (report directly ); request to report the target serving cell information when the UE changes in the serving cell (report upon change of serving cell ); request when the UE enters a specific area of interest ( Area of Interest (AOI), report target AOI information (report UE presence in the area of interest), etc.

As shown in FIG. 5, the primary base station MN provides macro coverage (for example, a cell radius of 10 km), and many secondary base station SN micro cell groups (for example, a cell radius of 100 m) provide continuous micro coverage at different frequencies. A certain terminal UE is under the joint coverage of the macro cell MN Cell-1 and the micro cell SN Cell-7, and is performing dual connectivity operations. The AMF of the core network can learn that the UE is under the service coverage of MN's Cell-1 through the ULI reporting process on the MN side, but cannot learn that the UE is also under the service coverage of SN's Cell-7. When the UE is in dual connectivity and moves between SN micro cell groups, but never leaves Cell-1 of the MN, AMF cannot sense the latest location of the UE or whether it enters/leaves a secondary serving cell or secondary service on the SN side Cell set (Secondary Cell Group, SCG) or AOI. If the AMF is to perceive the ULI of the UE in a certain SN, the UE needs to enter the single connection mode in the micro cell group of the SN through the handover process. After the SN is upgraded to the new primary base station of the UE, the AMF can perceive the location information of the new primary base station. But this cannot take full advantage of the multi-connection mode. If the UE multi-connection operation is only configured in MN Terminated mode (as shown in Figure 4b), SN and 5GC have no control plane NG-C and user plane NG-U interface connection, and the core network cannot perceive whether the UE is in multi-connection. Working mode. Therefore, the location information of the UE on the secondary service side, such as the location information on the SN side (SN-ULI for short) reporting process, can be added between the AMF and the MN, so that the AMF of the core network can also be used when the UE remains in the multi-connection mode. Perceive the location information of the UE on the SN side.

Fig. 6 shows a flowchart of a method for acquiring a terminal location according to an embodiment of the present application. As shown in FIG. 6, the method may be applied to the main base station of the access network, and the method may include the following steps.

Step S11: Receive a downlink message from an AMF network element, where the downlink message includes a position report indication and position report configuration information of the terminal on the secondary server side, and the position report configuration information includes at least one type of a position report event .

Step S12: Acquire the current position of the terminal on the auxiliary service side according to the position report instruction 置信息。 Set information.

Step S13: In response to an event corresponding to the location report configuration information, send an uplink message to the AMF network element, where the uplink message includes the current location information result of the terminal on the auxiliary service side.

In the embodiment of the present application, the secondary serving side may include at least one of the secondary serving cell on the primary base station side, the secondary serving cell set on the primary base station side, and the secondary base station side. The primary base station and the secondary base station may include any of the aforementioned NG-RAN base stations. In the embodiment of the present application, the working mode of the terminal such as the UE may include a single connection mode and a multiple connection mode. The UE can transmit user service data between the primary and secondary base stations connected at the same time. The working mode in which the UE establishes a wireless connection with a primary base station (MN) belongs to the single connection mode. The working mode in which the UE establishes a wireless connection with one MN and at least one secondary base station (SN) at the same time belongs to the multi-connection mode. The working mode in which the UE establishes a wireless connection with one master cell group (Master Cell Group, MCG) and at least one secondary serving cell group (SCG) at the same time belongs to the multi-connection mode. For example, in the separated base station shown in FIG. 2, the working mode in which the UE establishes a wireless connection with the gNB-CU of the primary base station and at least two related gNB-DUs at the same time belongs to the multi-connection mode.

In the multi-connection mode, the working mode in which the UE is simultaneously connected to one MN and one SN can be called dual-connection mode. The working mode in which the UE is connected to the gNB-CU of the MN and its related two gNB-DUs at the same time can also be called the dual connection mode.

In the embodiment of this application, the downlink message received by the primary base station from the AMF network element may be an NGAP downlink message. For example, the NGAP downlink message can be obtained by extending a location report control (LOCATION REPORTING CONTROL) message. For another example, the NGAP downlink message may be a newly defined new message such as: MC-LOCATION REPORTING CONTROL.

The NGAP downlink message may include at least one of a first location report instruction, a second location report instruction, and a third location report instruction. The first location report indication is used to indicate to report the connection mode of the terminal; the second location report indication is used to indicate to report location information of the terminal on the secondary service side; the third location report indication is used to indicate Jointly report the location information of the terminal on the primary base station side and the secondary serving side. These position reporting instructions can be expressed in the form of enumerated type (Enumerated), bit string (Bitmap), etc. The uplink message sent by the primary base station to the AMF network element may be an NGAP uplink message. The NGAP downlink message may include multiple location information results of the UE on the SN side. For example, the location information result reported for the first location reporting indication may include connection mode status information. The location information result reported for the second location reporting instruction may include location information corresponding to various location reporting event types on the auxiliary service side. The location information result reported for the third location reporting instruction may include Multiple joint location information of the main service side and the auxiliary service side.

In this embodiment of the application, the location reporting event type in the location reporting configuration information includes but is not limited to at least one of the following:

Report the change of the multi-connection mode of the terminal;

Report the auxiliary serving cell or the set of auxiliary serving cells;

Report the change of the auxiliary serving cell or the set of auxiliary serving cells;

The reporting terminal appears within the AOI range on the secondary base station side;

Stop reporting the location information of the terminal on the auxiliary service side;

Stop reporting the change of the secondary serving cell or the set of secondary serving cells of the terminal;

Stop reporting that the terminal appears within the AOI range on the secondary base station side.

In the embodiment of the present invention, the location report configuration information included in the downlink message may be one set or multiple sets. The downlink message may also include a reference index identifier corresponding to at least one set of location reporting configuration information. Correspondingly, the uplink message also includes the same position report configuration information as in the received downlink message and the corresponding reference index identifier.

The NGAP downlink message sent by AMF to the primary base station may include each set of location report configuration information and its corresponding reference index identification. In this way, the NGAP uplink message received by the AMF may also include the reported configuration information and its corresponding reference index identifier at the same position as in the NGAP downlink message. After the AMF receives the NGAP uplink message, it can associate the location information result with the specific configuration information according to the reference index identifier therein. In this way, AMF can perform differentiated policy configuration management based on different location information results.

In an implementation manner, step S12 includes: obtaining the current location information of the terminal on the auxiliary service side through the XnAP or F1AP interface according to the location report instruction, for example, it may include any of the following methods:

Manner 1: The primary base station actively obtains the SN-ULI of the UE from the secondary base station.

For example, the primary base station sends a location information request message to the secondary base station through an XnAP interface, where the location information request message includes the identification information of the terminal. The primary base station receives the location information response message returned by the secondary base station according to the terminal's identification information through the XnAP interface, where the location information response message includes the current user location information of the terminal at the secondary base station side (where the terminal The current user location information on the secondary base station side may be referred to as SN-ULI).

For another example, the primary base station sends a location information request message to the secondary serving cell of the primary base station or the gNB-DU node to which the secondary serving cell set belongs via the F1AP interface, where the location information request message includes the terminal The identification information of the; receiving the secondary serving cell of the primary base station or the gNB-DU node to which the set of secondary serving cells belongs through the F1AP interface, and the location information response message returned according to the identification information of the terminal, the location information response message includes the Information about the secondary serving cell or the secondary serving cell set (SCG) where the terminal is currently on the primary base station side.

Manner 2: The primary base station directly receives the SN-ULI of the UE from the secondary base station.

For example, the primary base station receives the user location information SN-ULI of the terminal on the secondary base station side from the secondary base station through the XnAP interface. In this way, various messages sent by the secondary base station to the primary base station can carry SN-ULI, so that the primary base station can receive the SN-ULI from the secondary base station periodically or in real time.

For another example, the primary base station receives the secondary serving cell or SCG information of the secondary serving cell or SCG of the primary base station from the secondary serving cell of the primary base station or the gNB-DU node to which the secondary serving cell set belongs through the F1AP interface. Various messages sent by the gNB-DU node to the primary base station can carry information about the secondary serving cell or SCG, so that the primary base station can receive the secondary serving cell or SCG information from the gNB-DU node regularly or in real time.

In this embodiment of the application, the position report indication and the position report configuration information included in the NGAP downlink message received by the primary base station from the AMF network element may be different. The result of the primary base station may be different according to the current location information of the terminal on the secondary service side reported to the AMF network element.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a first location reporting indication and the location reporting configuration information, and the first location reporting instruction is used for When instructing to report the connection mode of the terminal, the location reporting event type in the location reporting configuration information includes reporting the change of the multi-connection mode of the terminal. Step S13 includes: in response to the event that the multi-connection mode of the terminal changes, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes whether the terminal is in the multi-connection mode and the multi-connection of the terminal At least one of the time of the mode change, the length of time the terminal is in various multi-connection modes, the number of secondary base stations currently connected to the terminal, and the current secondary serving cell or secondary serving cell set information of the terminal item.

The event of changing the multi-connection mode of the terminal may include at least one of the following:

The terminal changes from a single connection mode to a multiple connection mode. For example, the UE changes from connecting the primary base station MN and the secondary base station SN1 to only connecting to the MN. In this case, the primary base station can report the time when the UE becomes multi-connected, the length of time in a single connection, the connected primary and secondary base stations, and primary and secondary serving cells.

The terminal changes from the multi-connection mode to the single-connection mode. For example, the UE changes from only connecting to the primary base station MN to simultaneously connecting to the MN and the secondary base stations SN1 and SN2. In this case, the primary base station can report the time when the UE becomes single-connected, the length of time the UE is in single-connection, the connected primary base station and the primary serving cell, etc. In the multi-connection mode, the secondary base station currently connected to the terminal changes. For example, the secondary base station to which the UE is currently connected changes from SN1 to SN2. In this case, the primary base station can report the time when the UE starts to connect to SN2, the length of time to connect to SN2, and so on.

In the multi-connection mode, the number of secondary base stations currently connected to the terminal changes. For example, the number of secondary base stations currently connected to the UE increases or decreases. In this case, the primary base station can report the number of secondary base stations currently connected to the UE, the time when the number changes, and the length of time in the current multi-connection mode.

In the multi-connection mode, the number of secondary serving cells or sets of secondary serving cells to which the terminal is currently connected changes. For example, the number of secondary serving cells or sets of secondary serving cells to which the UE is currently connected increases or decreases. In this case, the primary base station can report the number of secondary serving cells or sets of secondary serving cells to which the UE is currently connected, the time when the number changes, and the length of time in the current multi-connection mode.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report instruction and the location report configuration information, and the second location report instruction is used for When instructing to report the location information of the terminal on the secondary serving side, the location reporting event type in the location reporting configuration information includes reporting a current secondary serving cell or a set of secondary serving cells. Step S13 includes: in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the current secondary serving cell or secondary service of the terminal Information about the cell collection.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report instruction and the location report configuration information, and the second location report instruction is used for When instructing to report the location information of the terminal on the secondary serving side, the location reporting event type in the location reporting configuration information includes reporting the current secondary serving cell or the change of the secondary serving cell set. Step S13 includes: in response to an event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the secondary serving cell after the terminal is changed. Information about serving cell or auxiliary serving cell collection.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report instruction and the location report configuration information, and the second location report instruction It is used to indicate to report the location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range on the secondary base station side. Step S13 includes: in response to an event that the terminal appears within the range of the AOI on the secondary base station side, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the terminal’s current presence on the secondary base station side. Information within the scope of AOI. In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting instruction It is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting the current secondary serving cell or the set of secondary serving cells. Step S13 includes: in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the current secondary serving cell or secondary service of the terminal The information of the cell set and the ULI of the terminal currently on the primary base station side.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting instruction It is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting the current secondary serving cell or the change of the secondary serving cell set. Step S13 includes: in response to the event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the secondary serving cell after the terminal has changed. Information of the serving cell or the set of secondary serving cells and the ULI of the terminal currently on the primary base station side.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting instruction It is used to indicate to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range of the secondary base station side. Step S13 includes: in response to an event that the terminal appears within the AOI range on the secondary base station side, sending an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the terminal’s current presence on the secondary base station side. Information within the AOI range and the ULI of the terminal currently at the main base station side.

If the primary base station is required to stop reporting the results of the terminal's location information on the auxiliary service side to the AMF in response to various events, the NGAP downlink message sent by the AMF to the primary base station can include various types of events that stop reporting.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stopping reporting that the terminal is on the auxiliary service side Location information. The method further includes: stopping reporting the location information of the terminal on the secondary serving side to the AMF network element in response to the event that the terminal is in the secondary serving cell. In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stopping reporting the secondary serving cell of the terminal or The set of auxiliary serving cells is changed. The method further includes: stopping to report to the AMF network element information of the secondary serving cell or the secondary serving cell set after the terminal has changed in response to the event that the secondary serving cell or the set of secondary serving cells of the terminal changes.

In an example, step S11 includes: receiving an NGAP downlink message from the AMF network element, where the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stopping reporting that the terminal appears at the secondary base station side Within the scope of the AOI. The method further includes: stopping to report to the AMF network element the information that the terminal currently appears within the AOI range of the secondary base station in response to the event that the terminal appears within the AOI range of the secondary base station side.

Fig. 7 shows a flowchart of a method for acquiring a terminal location according to an embodiment of the present application. As shown in FIG. 7, the method may be applied to the AMF network element of the core network, and the method may include the following steps.

Step S21: Send a downlink message to the primary base station, where the downlink message includes the terminal's location reporting indication on the secondary serving side and location reporting configuration information, and the location reporting configuration information includes at least one location reporting event type, and The location report indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side.

Step S22: Receive an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the secondary service side.

In the embodiment of this application, the downlink message received by the primary base station from the AMF network element may be an NGAP downlink message. The NGAP downlink message may include at least one of a first location report instruction, a second location report instruction, and a third location report instruction. The first location report indication is used to indicate to report the connection mode of the terminal; the second location report indication is used to indicate to report location information of the terminal on the secondary service side; the third location report indication is used to indicate Jointly report the location information of the terminal on the primary base station side and the secondary serving side. The uplink message sent by the primary base station to the AMF network element may be an NGAP uplink message. The NGAP downlink message may include multiple location information results. For example, the location information result reported for the first location reporting indication may include connection mode status information. The location information result reported for the second location reporting indication may include the location information of the auxiliary service side. For the third location report, the location information result reported by the indication may include multiple joint location information of the primary serving side and the secondary serving side.

In an implementation manner, the location reporting event type in the location reporting configuration information includes but is not limited to at least one of the following:

Report the change of the multi-connection mode of the terminal; Report the auxiliary serving cell or the set of auxiliary serving cells;

In the embodiment of the present invention, the downlink message may also include a reference index identifier corresponding to at least one set of location reporting configuration information, and the uplink message may also include the same location reporting configuration information as in the received downlink message And its corresponding reference index identification.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a first location report instruction and the location report configuration information, and the first location report instruction is used to instruct to report all information. For the connection mode of the terminal, the location reporting event type in the location reporting configuration information includes reporting the change of the multi-connection mode of the terminal. Step S22 includes: receiving an NGAP uplink message sent by the primary base station in response to an event of the terminal's multi-connection mode change, where the NGAP uplink message includes whether the terminal is in the multi-connection mode and the terminal's multi-connection mode At least one of the time of change, the length of time the terminal is in various multi-connection modes, the number of secondary base stations currently connected to the terminal, and the current secondary serving cell or secondary serving cell set information of the terminal .

The event of the change of the multi-connection mode of the terminal may include at least one of the following: the terminal changes from a single-connection mode to a multi-connection mode, the terminal changes from a multi-connection mode to a single-connection mode, and the terminal is in the multi-connection mode. The secondary base station to which the terminal is currently connected changes, the number of secondary base stations to which the terminal is currently connected in multi-connection mode changes, and the number of secondary serving cells or sets of secondary serving cells to which the terminal is currently connected in multi-connection mode change.

In an example, step S21 includes: sending an NGAP downlink message NGAP downlink message to the primary base station, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location report indication is for Instructing to report the location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the terminal is in the secondary serving cell or secondary serving cell set, where the NGAP uplink message includes the current secondary serving cell or secondary serving cell of the terminal Collection of information.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location The reporting instruction is used to instruct to report the location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting secondary serving cell or secondary serving cell set change. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the current secondary serving cell or secondary serving cell set of the terminal is changed, where the NGAP uplink message includes the secondary service after the terminal is changed Information about the collection of cells or auxiliary serving cells.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a second location report instruction and the location report configuration information, and the second location report instruction is used to instruct to report all information. The location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range on the secondary base station side. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the terminal appears within the AOI range of the secondary base station side, where the NGAP uplink message includes the AOI that the terminal currently appears on the secondary base station side Information within range.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting indication is used to indicate joint reporting The location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the terminal is in the secondary serving cell or secondary serving cell set, where the NGAP uplink message includes the current secondary serving cell or secondary serving cell of the terminal The aggregated information and the ULI of the terminal currently on the primary base station side.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting indication is used to indicate joint reporting The location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cell changes. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the current secondary serving cell or the set of secondary serving cells of the terminal is changed, where the NGAP uplink message includes the secondary serving cell after the terminal is changed Or the information of the secondary serving cell set and the ULI of the terminal currently on the primary base station side.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third location reporting indication and the location reporting configuration information, and the third location reporting indication is used to indicate joint reporting The location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting the AOI pattern that the terminal appears on the secondary base station side. Within the surrounding. Step S22 includes: receiving the NGAP uplink message sent by the primary base station in response to the event that the terminal appears within the AOI range of the secondary base station side, where the NGAP uplink message includes the AOI that the terminal currently appears on the secondary base station side Information within the range and the terminal’s current status at the main base station

ULI.

In an example, step S21 includes: sending an NGAP downlink message to the primary base station, and the location reporting event type in the location reporting configuration information in the NGAP downlink message includes at least one of the following: stop reporting that the terminal is on the secondary service side Stop reporting the location information of the terminal, the secondary serving cell or the set of secondary serving cells change, and stop reporting that the terminal appears within the AOI range on the secondary base station side. After receiving the NGAP downlink message, the primary base station can stop reporting the position information results of the terminal on the secondary service side to the AMF in response to various events.

In the embodiment of this application, the UE can be in a multi-connection mode. For example, the UE can be in the RRC connection state with one MN, and be in the RRC connection state with several SNs at the same time. Through the reporting process of the location information on the auxiliary service side between the AMF and the primary base station, the AMF of the core network can perceive multiple location information results of the UE on the auxiliary service side. For example, AMF can sense connection mode status information such as whether the UE is in the multi-connection mode, when it is in the multi-connection mode, and the length of time in the multi-connection mode. AMF can also perceive the information of the secondary serving cell or set of secondary serving cells on the SN-ULL MN side of the UE on the SN side. AMF can also perceive the UE's multiple ULI joint location information (ULI+SN-ULI) on both sides of the primary and secondary services. Furthermore, AMF can perform differentiated policy configuration and management based on different location information based on the received location information results of the auxiliary service side.

In an application example, the SN-ULI reporting process between AMF and the primary base station may include the following steps:

SI: AMF instructs the NG-RAN base station through the NGAP downlink message. In an implementation manner, the NGAP downlink message may be an extension of the LOCATION REPORTING CONTROL message, or it may be a newly defined new message such as: MC-LOC ATION REPORTING CONTROL message.

For example, the position report indication of the terminal on the auxiliary service side in the NGAP downlink message may include one or more of the following:

C 1: Whether to report the change of the UE's multi-connection mode. The change of the UE's multi-connection mode includes many situations. For example, the UE changes from the multi-connection mode from the single-connection mode to the multi-connection mode, the UE changes from the multi-connection mode to the single-connection mode, the secondary base station to which the UE is currently connected in the multi-connection mode changes, and the UE is currently connected in the multi-connection mode. The number of connected secondary base stations changes, and the number of secondary serving cell sets currently connected to the UE changes in the multi-connection mode. C2: Whether to independently report the user location information SN-ULI of the UE on the SN side.

C3: Whether to jointly report the user location information ULI on the primary base station side and the user location information SN-ULI on the secondary base station side. If C3=Tme or 1, the base station evaluates the location report event type in the location report configuration information on the SN side, and prepares to report the UE location information result on the SN side. In addition, the NG-RAN base station can also report the location information result on the MN side at the same time. In other words, the ULI on the main base station side and the SN-ULI on the SN side are used to form a joint report result.

In addition, the AMF sends the location report configuration information and its corresponding reference index identifier to the NG-RAN base station through the aforementioned NGAP downlink message. Wherein, the location reporting configuration information includes specific configuration information related to various location event evaluation and reporting of the service area on the SN side, which can be represented by the Location Reporting Request Type for SN (Location Reporting Request Type for SN). The reference index identifier corresponding to each set of configuration information can be represented by the Location Report Reference id (location report reference identifier). Among them, the content of the SN side configuration information Location Reporting Request Type for SN and the MN side configuration information Location Reporting Request Type can be independent of each other.

In an embodiment, for the UE, the AMF may provide multiple sets of different specific configuration information at the same time, Location Reporting Request Type for SN, to achieve different location event evaluation purposes. Each set of configuration information can be correlated and distinguished with different Location Report Reference id.

In an embodiment, each set of configuration information may include one or more location reporting event types. The location report event types include the types related to various location event evaluation and reporting of the serving cell on the SN side, which can be represented by Event Type. The above configuration information may also include an AOI configuration list (List) related to the SN side of the secondary base station.

The following is an example of Event Type:

UE Enter MC Mode, this type means that the secondary base station, secondary serving cell, and secondary serving cell set that the UE is currently connected to are reported when the UE enters or is already in the multi-connection mode.

UE Exit MC Mode, this type indicates that when the UE exits the multi-connection mode and is already in the single-connection mode, the time when the UE exits the multi-connection mode, the currently connected base station and other information are reported.

Direct Report, this type means directly reporting the secondary serving cell (PScell) or the set of secondary serving cells on the current SN side of the UE.

change of serving cell, this type means that the SN-ULI is reported when the secondary serving cell or set of secondary serving cells on the SN side changes.

UE presence in the area of interest, this type indicates that SN-ULI is reported when the UE enters or is in a certain configured AOI area on the SN side. stop change of serving cell, this type indicates the SN-ULI report evaluation when the secondary serving cell on the SN side changes before the stop.

stop UE presence in the area of interest, this type indicates the SN-ULI report evaluation of the UE entering a certain AOI area on the SN side before stopping.

cancel location reporting for the UE, this type means to stop evaluating and reporting all SN-ULIs on the current SN side.

In an embodiment, the content composition of the AOI configuration list on the SN side may be the same as the composition of the AOI configuration list on the MN side. For example, the Cell List (cell list), Node List (node list), TAI List (tracking Area list) to build the AOI configuration list. The specific configuration content in the AOI configuration list on the SN side and MN side can be independent of each other. Of course, the internal answers specifically configured in the AOI configuration list on the SN side and the MN side can also be different.

S2: The NG-RAN base station receives the above-mentioned NGAP downlink message issued by the AMF, obtains at least one indication of Cl, C2, and C3, and specific configuration information related to location reporting on the SN side. Location Reporting Request Type for SN and each set corresponding The reference index identifies the Location Report Reference id. The NG-RAN base station performs the SN-ULI location event assessment of the UE on the SN side and the preliminary report of the SN-ULI result according to the above-mentioned one or more sets of specific configuration information.

In addition, the NG-RAN base station can also receive specific configuration information related to MN side location reporting at the same time, Location Reporting Request Type, and perform UE ULI location event evaluation on the MN side and preliminary ULI result reporting.

In an embodiment, for different indications, the operation example of the NG-RAN base station is as follows:

When Cl=Tme or 1, and Event Type = UE Enter MC Mode or UE Exit MC Mode, the NG-RAN base station needs to report whether the UE is in the multi-connection mode, when it is in the multi-connection mode, the length of time in the multi-connection mode, and the UE The number of secondary base stations currently connected, the number of secondary serving cells or secondary serving cell groups of the UE, etc.

When C2=Tme or 1, the NG-RAN base station performs evaluation based on the Location Reporting Request Type for SN in the specific configuration information related to the SN-ULI location event evaluation report on the SN side, and prepares to report the SN-ULI result of the UE on the SN side.

When C3=Tme or 1, the NG-RAN base station also receives the specific configuration information related to the ULI location event evaluation report on the MN side Location Reporting Request Type and the specific configuration information related to the SN-ULI location event evaluation report on the SN side Location Reporting Request Type for SN, to jointly report the combined ULI and SN-ULI multiple location information of the UE on both sides of the primary and secondary base stations. Which joint on The reported ULI and SN-ULI can be relatively independent.

S3: The MN first obtains the SN-ULI result of the UE from the SN side. For example, the MN obtains the SN-ULI result of the UE from the SN side through the XnAP interface. The MN then sends an NGAP uplink message to the AMF to report the SN-ULI result of the UE on the SN side. It can also report the combined ULI and SN-ULI information of the UE on both sides of the primary and secondary base station.

In an embodiment, the NGAP uplink message may be an extension of the LOCATION REPORT message, or may be a newly defined new message such as the MC-LOCATION REPORT message. The NGAP uplink message can include:

MC Status/Number/Time. Status indicates the information that the UE is in the multi-connection mode, for example: whether/when/how long the UE is in the multi-connection mode. Number represents the number of serving base stations (including primary base stations and secondary base stations), serving cells, and serving cell sets to which the UE is currently connected. Time represents the time the UE has been in the dual multiple connection mode.

SN-ULI: Indicates the SN-ULI location information of the UE on the SN side of the secondary base station.

MC-ULI: The combined ULI and SN-ULI information of the UE on both sides of the primary and secondary base station.

The Location Reporting Request Type for SN and its corresponding location reporting Reference id enable the core network to perform correlation processing on the received SN-ULI result.

S4: AMF is based on the SN-ULI result of the UE on the SN side reported by the MN (may also refer to the ULI result of the terminal UE on the MN side at the same time) to obtain the location information and connection status of the UE. AMF performs differentiated policy configuration management based on the different location information and connection status of the UE, such as service QoS parameter setting, MDT configuration, and terminal location monitoring and tracking.

In this application example, for the UE in the multi-connection mode, the AMF of the core network can perceive the primary and secondary multi-location joint information. On the one hand, the terminal UE can try to maintain the dual-multiple connection working mode, so as to give full play to the advantages of multi-connection operation. On the other hand, the core network AMF can also timely sense the UE’s multi-connection mode change, the UE’s ULI location information on the SN side, and the UE’s multiple location information combination on the MC side and the SN side according to the needs of local specific policy adaptation. Information, so as to perform differentiated strategy adaptation and management based on different location information.

In this application example, when the location reporting indication and the location reporting event type are different, there are different processing methods. Examples are as follows.

Example 1:

As shown in Figure 8a, the UE is currently in the NGEN-DC dual connection mode. The UE is simultaneously connected with the primary base station MeNB and the secondary base station SgNB. MeNB provides large coverage of macro cell Cell-1, SgNB provides micro cell Continuous small coverage of Cell-2/3...9. The current primary and secondary serving cells of the UE are Cell-1 and Cell-6, respectively, and are moving toward Cell-7. AMF needs to sense that the UE is in the dual-connection mode and the cell location change of the UE on the SgNB side. This example includes the following steps.

Step 101: As shown in Figure 8b, the AMF sends an extended LOCATION REPORTING CONTROL message to the primary base station MeNB. The message includes instructions for Cl=Tme and C2=Tme. In this message, the specific configuration information related to the location event evaluation report on the SgNB side Location Reporting Request Type for SgNB and its corresponding reference index identification Location Report Reference id are as follows:

The configuration information associated with Location Report Reference id=l is:

Event Type: UE Enter MC Mode;

The configuration information associated with Location Report Reference id=2 is:

Event Type= change of serving cell.

Step 102: The primary base station MeNB receives the above LOCATION REPORTING CONTROL message, parses out relevant indication commands and specific configuration information, and evaluates the SN-ULI location information of the UE.

Since the UE is in the dual connection mode and Cl=Tme, Event Type=UE Enter MC Mode, the MeNB can prepare to report the UE entering the multi-connection mode (UE Enter MC Mode) event and the current status of the UE with two serving base stations.

Since C2=Tme, Event Type=change of serving cell, as the UE moves from the secondary serving cell Cell-6 to Cell-7, the MeNB may prepare to report a change of serving cell event on the SgNB side.

Step 103: The primary base station MeNB obtains the SN-ULI of the terminal from the SgNB side. For example, the MeNB obtains the SN-ULI of the UE from the SgNB side through the XnAP interface. For another example, a certain DU in the primary base station can also establish a secondary service connection with the UE, and mark the DU as SgNB-DU. In this case, the MeNB can obtain the UE's secondary serving cell or set of secondary serving cells on the MN side from the SgNB-DU through the F1AP interface.

Step 104: The MeNB successively sends two extended LOCATION REPORT messages to the AMF. In step 104a, the MeNB first sends the first LOCATION REPORT message to the AMF. Including the event type "UE Enter MC Mode" on the SgNB side, the current status of two serving base stations is "MC No.=2", the UE's current secondary serving cell Cell-6 and the associated Location Report Reference id=1. In step 104b, after the UE completes the movement from Cell-6 to Cell-7 and changes the PScell, the MeNB first sends a second LOCATION REPORT message to the AMF. These include the event type "change of serving cell" on the SgNB side, the status of the UE currently having two serving base stations "MC No.=2", the current new secondary serving cell of the UE Cell-7 and the associated Location Report Reference id=2.

Step 105: The AMF receives the first LOCATION REPORT message reported by the primary base station, and knows that the UE is currently in a dual-connection state and that the UE is in Cell-6 on the SgNB side. Later, the AMF receives the second LOCATION REPORT message reported by the primary base station, and learns that the UE has a change of serving cell event on the SgNB side, and that the UE is in Cell-7 on the SgNB side. Based on the above event information, if necessary, the AMF can adapt and manage new strategies for different locations of the UE.

Example two:

As shown in Figure 9a, the UE is currently in NR-DC dual connectivity mode. The UE is simultaneously connected to the primary base station MgNB and the secondary base station SgNB. The low-frequency deployment of MgNB provides large coverage of the macro cell Cell-1, and the high-frequency deployment of SgNB provides continuous small coverage of the micro cell Cell-2/3-9. The UE's current primary and secondary serving cells are Cell-1 and Cell-9, respectively, and continue to move to the right. AMF needs to sense that the UE is in dual-connection mode and the UE's cell location changes on the SgNB side. This example includes the following steps.

Step 201: As shown in Figure 9b, the AMF sends an extended LOCATION REPORTING CONTROL message to the main base station MgNB. The message includes the instruction command Cl=True. In this message, the specific configuration information related to the location event evaluation report on the SgNB side Location Reporting Request Type for SgNB and its corresponding reference index identification Location Report Reference id are as follows:

Event Type: UE Enter MC Mode;

Event Type: UE Exit MC Mode.

Step 202: The main base station MgNB receives the above LOCATION REPORTING CONTROL message, parses out relevant indication commands and specific configuration information, and evaluates the SN-ULI location information of the UE.

Since the UE is in the dual connection mode and Cl=Tme, Event Type=UE Enter MC Mode, MgNB can prepare to report the UE Enter MC Mode event and the current status of the UE with two serving base stations.

Since Cl=Tme, Event Type= UE Exit MC Mode, as the UE moves from the secondary serving cell Cell-9 to a location without secondary serving cell coverage, the MgNB can prepare to report the UE exits on the SgNB side. Connection mode (UE Exit MC Mode) event.

Step 203: The main base station MgNB obtains the terminal SN-ULI from the SgNB side. For example, the MgNB obtains the SN-ULI of the UE from the SgNB side through the XnAP interface. For another example, a certain DU in the primary base station can also establish a secondary connection with the UE, and mark the DU as an SgNB-DU. In this case, the MeNB can obtain the information of the secondary serving cell or the set of secondary serving cells of the UE on the MN side from the SgNB-DU through the F1AP interface.

Step 204: MgNB sends two extended LOCATION REPORT messages to AMF. In step 204a, MgNB first sends the first LOCATION REPORT message to AMF. Including the event type is "UE Enter MC Mode", the current status of two serving base stations is "MC No.=2", the UE's current secondary serving cell Cell-9 and the associated Location Report Reference id=1.

In step 204b, after the UE completes the removal from Cell-9 and the deletion of the old PScell, the MgNB first sends the second LOCATION REPORT message to the AMF. It includes the event type "UE Exit MC Mode" on the SgNB side and the associated Location Report Reference id=2. The message can also include the current status of a serving base station "MC No.=1".

Step 205: The AMF receives the first LOCATION REPORT message reported by the primary base station, and knows that the UE is currently in a dual-connection state and that the UE is in Cell-9 on the SgNB side. Later, the AMF received the second LOCATION REPORT message reported by the primary base station, and learned that the UE Exit MC Mode event occurred on the SgNB side of the UE, and the UE was in a position without SgNB secondary serving cell coverage. Based on the above event information, if necessary, the AMF can adapt and manage new strategies for different locations of the UE.

Example three:

As shown in Figure 10a, the UE is in the NGEN-DC dual connection mode. The UE is simultaneously connected to the primary base station MeNB and the secondary base station SgNB. MeNB provides large coverage of macro cell Cell-1, and SgNB provides continuous small coverage of micro cell Cell-2/3. Among them, Cell-2/3/6/7 constitute the area of interest AOI1, and Cell-4/5/8/9 constitute the area of interest AOI2. The UE is currently in a single connection mode, the primary serving cell is Cell-1, and it moves in the direction of the trajectory of Cell-6, 7, 8, and 5. AMF needs to sense that the UE is in the dual connection mode and the UE's AOI change on the SgNB side. This example includes the following steps.

Step 301: As shown in FIG. 10b, the AMF sends an extended LOCATION REPORTING CONTROL message to the main base station MeNB. The message includes Cl=True, C2=Tme indicating commands. In this message, the specific configuration information related to the location event evaluation and reporting on the SgNB side Location Reporting Request Type for SgNB and its corresponding reference index identification Location Report Reference id such as Down:

Event Type: UE presence in the area of interest, and AOI=l;

Event Type: UE presence in the area of interest, and AOI=2;

Step 302: The primary base station MeNB receives the aforementioned LOCATION REPORTING CONTROL message, parses out the relevant indication commands and specific configuration information, and evaluates the SN-ULI location information of the UE.

Since the UE enters Cell-6 and is in dual connectivity mode and C2=True, Event Type= UE presence in the area of interest, the MeNB can prepare to report the UE presence in the AOI (UE presence in the AOI) event and current AOI1 where the UE is located.

Since C2=Tme, Event Type= UE presence in the area of interest, as the UE moves from the secondary serving cell Cell-7 to Cell-8, the MeNB can prepare to report the UE presence in the AOI event on the SgNB side and the current UE location AOI2.

Step 303: The primary base station MeNB obtains the terminal SN-ULI from the SgNB side.

Step 304: The MeNB successively sends two extended existing LOCATION REPORT messages to the AMF.

In step 304a, the MeNB first sends the first LOCATION REPORT message to the AMF. It includes the event type "UE presence in the AOI" on the SgNB side, and the UE currently has two serving base station status "MC No.=2", the UE is currently in AOI1 and the associated Location Report Reference id=1.

In step 304b, the UE completes the movement from Cell-7 to Cell-8 and changes the target AOI, and the MeNB first sends the second LOCATION REPORT message to the AMF. This includes the event type "UE presence in the AOI" on the SgNB side, the new AOI2 where the UE is currently located and the associated Location Report Reference id=2.

Step 305: The AMF receives the first LOCATION REPORT message reported by the primary base station, and learns that the UE is currently in the DC dual connection state and the UE is in the AOI1 interest area on the SgNB side. Later, the AMF receives the second LOCATION REPORT message reported by the primary base station, and learns that the UE presence in the AOI event has occurred again on the SgNB side of the UE, and that the UE is currently in the AOI2 interest area on the SgNB side. Based on the foregoing event information, if necessary, the AMF can adapt and manage a new strategy for different locations of the UE. Example four:

As shown in Figure 11a, the UE is in NR-DC dual connectivity mode. The UE is simultaneously connected to the primary base station MgNB and the secondary base station SgNB. The low frequency deployment of MgNB provides large coverage of the macro cell Cell-1, and the high frequency deployment of SgNB provides continuous small coverage of the micro cell Cell-2/3…9. Among them, Cell-2/3/6/7 constitute the area of interest AOI1, and Cell-4/5/8/9 constitute the area of interest AOI2. The UE is currently in dual connectivity mode, and the current primary and secondary serving cells are Cell-1 and Cell-7 respectively, and they are moving in the direction of the trajectory of Cell-8/9. AMF needs to sense that the UE is in the dual connection mode state and the UE's AOI change on the SgNB side. This example includes the following steps.

Step 401: As shown in Figure 11b, the AMF sends a brand new MC-LOCATION REPORTING CONTROL message to the main base station MgNB. The message includes Cl=Tme, C2=Tme, C3=Tme indicating commands. In this message, the specific configuration information related to the location event evaluation report on the SgNB side Location Reporting Request Type for SgNB and its corresponding reference index identification Location Report Reference id are as follows:

Event Type: UE presence in the area of interest, and AOI=l, 2;

Event Type: UE Exit MC Mode;

The MC-LOCATION REPORTING CONTROL message may also include specific configuration information related to location event evaluation and reporting on the MgNB side. Location Reporting Request Type and its corresponding reference index identification Location Report Reference id. For specific configuration content, refer to the foregoing related description.

Step 402: The primary base station MgNB receives the above MC-LOCATION REPORTING CONTROL message, parses out relevant indication commands and specific configuration information, and evaluates the ULI and SN-ULI location information of the UE on both sides of the primary and secondary base stations.

If the UE is already in the dual connectivity mode and Cl=Tme, C2=Tme, Event Type=UE presence in the area of interest, the MgNB can prepare to report the UE presence in the AOI event on the SgNB side and the AOI1 where the UE is currently located. Since AOI1 and AOI2 belong to the same set of parameter configurations, when the UE moves from the secondary serving cell Cell-7 (belonging to AOI1) to Cell-8 (belonging to AOI2), there is no need to re-report the UE presence in the AOI event on the SgNB side.

Since C3=Tme, the UE can prepare to jointly report the location information of the MgNB side of the primary base station according to the configuration information on the MgNB side. Since Event Type = UE Exit MC Mode, as the UE moves from the secondary serving cell Cell-9 to the outside, it is necessary to prepare to report the UE Exit MC Mode event on the SgNB side. Step 403: The main base station MgNB obtains the terminal SN-ULI from the SgNB side.

Step 404: MgNB sends two brand new MC-LOCATION REPORT messages to AMF.

In step 404a, MgNB first sends the first MC-LOCATION REPORT message to AMF. Including the event type "UE presence in the AOI event" on the SgNB side, and the UE currently has two serving base station status "MC No.=2", and the current status of the SgNB side is AOI l or 2, the current primary base station MgNB side Location Cell-1 and the associated Location Report Reference id=l.

In step 404b, after the UE finishes moving from Cell-9 to the coverage area of the cell without SgNB, the MgNB sends a second MC-LOCATION REPORT message to the AMF. It includes the event type "UE Exit MC Mode event" on the SgNB side, the current location Cell-1 on the MgNB side and the associated Location Report Reference id=2.

Step 404: The AMF receives the first MC-LOCATION REPORT message reported by the primary base station, and learns that the UE is currently in the DC dual connectivity state and the UE is in Cell-1 on the MgNB side, and is within the AOI1 or 2 interest area on the SgNB side Inside. Later, the AMF receives the second MC-LOCATION REPORT message reported by the primary base station, and learns that the UE Exit MC Mode event has occurred on the SgNB side of the UE, and that the UE is in Cell-1 on the MgNB side. Based on the foregoing event information, if necessary, the AMF can adapt and manage a new strategy for different locations of the UE.

Fig. 12 shows a schematic structural diagram of a terminal location obtaining apparatus according to an embodiment of the present application. The device can be installed in the main base station. As shown in Figure 12, the device may include:

The first receiving module 51 is configured to receive a downlink message from an AMF network element, where the downlink message includes a position report indication of the terminal on the auxiliary service side and position report configuration information, and the position report configuration information includes at least one Types of events reported in various locations;

The first obtaining module 52 is configured to obtain the current location information of the terminal on the auxiliary service side according to the location report instruction;

The first sending module 53 is configured to send an uplink message to the AMF network element in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the auxiliary service side .

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a first location report indication and the location report configuration information, so The first location reporting indication is used to indicate to report the connection mode of the terminal, and the location reporting event type in the location reporting configuration information includes reporting the change of the multi-connection mode of the terminal; The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event of the terminal's multi-connection mode change, where the NGAP uplink message includes whether the terminal is in the multi-connection mode, The time when the multi-connection mode of the terminal changes, the length of time that the terminal is in various multi-connection modes, the number of secondary base stations currently connected to the terminal, and the current secondary serving cell or set of secondary serving cells of the terminal At least one item of the information.

In an embodiment, the event of the change of the multi-connection mode of the terminal includes at least one of the following: the terminal changes from the single-connection mode to the multi-connection mode, the terminal changes from the multi-connection mode to the single-connection mode, In the multi-connection mode, the secondary base station to which the terminal is currently connected changes, in the multi-connection mode the number of secondary base stations to which the terminal is currently connected changes, and in the multi-connection mode, the secondary serving cell or secondary base station to which the terminal is currently connected The number of serving cell sets changes.

In an implementation manner, the first receiving module 51 includes further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location reporting indication and the location reporting configuration information, The second location reporting indication is used to instruct to report location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells;

The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, where the NGAP uplink message includes the current information of the terminal Information about the secondary serving cell or the set of secondary serving cells.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report indication and the location report configuration information, so The second location reporting indication is used to instruct to report location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting secondary serving cell or secondary serving cell set change;

The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, where the NGAP uplink message includes the Information about the secondary serving cell or set of secondary serving cells after the terminal has changed.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report indication and the location report configuration information, so The second location report indication is used to indicate to report location information of the terminal on the secondary service side, and the location report event type in the location report configuration information includes reporting that the terminal appears within the AOI range of the secondary base station side; The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the terminal appears within the AOI range on the secondary base station side, and the NGAP uplink message includes the current Information appearing within the AOI range on the secondary base station side.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location report indication and the location report configuration information, so The third location reporting indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells;

The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, where the NGAP uplink message includes the current information of the terminal The information of the secondary serving cell or the set of secondary serving cells and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location report indication and the location report configuration information, so The third location reporting indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a secondary serving cell set change;

The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, where the NGAP uplink message includes the terminal The information of the changed secondary serving cell or the set of secondary serving cells and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third location report indication and the location report configuration information, so The third location report indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range of the secondary base station ；

The first sending module 53 is further configured to send an NGAP uplink message to the AMF network element in response to an event that the terminal appears within the AOI range on the secondary base station side, and the NGAP uplink message includes the current Information that appears within the AOI range on the secondary base station side and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the first receiving module 51 is further configured to receive data from the AMF network Elementary NGAP downlink message, where the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stopping reporting the location information of the terminal on the auxiliary service side;

The device further includes: a first stopping module configured to stop reporting the location information of the terminal on the secondary serving side to the AMF network element in response to the event that the terminal is in the secondary serving cell.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, and the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stop Report the change of the secondary serving cell or the set of secondary serving cells of the terminal;

The device further includes: a second stopping module, configured to stop reporting to the AMF network element the changed secondary serving cell or secondary serving cell or secondary serving cell of the terminal in response to the event that the secondary serving cell or secondary serving cell set of the terminal changes. Information about serving cell collection.

In an implementation manner, the first receiving module 51 is further configured to receive an NGAP downlink message from the AMF network element, and the location reporting event type in the location reporting configuration information in the NGAP downlink message includes stop The reporting terminal appears within the AOI range on the secondary base station side;

The device further includes: a third stopping module, configured to stop reporting to the AMF network element the AOI range that the terminal currently appears on the secondary base station side in response to the event that the terminal appears within the AOI range on the secondary base station side Information within.

In an implementation manner, the downlink message further includes a reference index identifier corresponding to at least one set of location reporting configuration information, and the uplink message further includes the same location reporting configuration information as in the received downlink message. The corresponding reference index ID.

In an implementation manner, the first obtaining module is further configured to obtain the current location information of the terminal on the auxiliary service side through an XnAP or FI AP interface according to the location report instruction.

In an implementation manner, the first acquisition module is further configured to send a location information request message to the secondary base station through an XnAP interface, where the location information request message includes identification information of the terminal; and receive the location information through an XnAP interface A location information response message returned by the secondary base station according to the identification information of the terminal, where the location information response message includes user location information SN-ULI of the terminal currently on the secondary base station side.

In an implementation manner, the first acquiring module is further configured to send a location information request message to the secondary serving cell of the primary base station or the gNB-DU node to which the secondary serving cell set belongs through the F1AP interface, where the location information request message includes The identification information of the terminal; receiving the secondary serving cell of the primary base station or the gNB-DU node to which the set of secondary serving cells belongs through the F1AP interface, and the location information response message returned according to the identification information of the terminal, in the location information response message Including that the terminal is currently in the main Information about the secondary serving cell or the set of secondary serving cells on the base station side.

In an implementation manner, the first acquiring module is further configured to receive the location information of the terminal on the secondary service side from the secondary base station through an XnAP interface.

In an embodiment, the first acquiring module is further configured to receive the secondary serving cell of the primary base station or the gNB-DU node to which the secondary serving cell set belongs through the FI AP interface. Or information about the set of auxiliary serving cells.

FIG. 13 shows a schematic structural diagram of an apparatus for acquiring a terminal position according to an embodiment of the present application. The device can be set in the AMF, as shown in Figure 13, the device can include:

The second sending module 61 is configured to send a downlink message to the primary base station, where the downlink message includes a position report indication of the terminal on the secondary service side and position report configuration information, and the position report configuration information includes at least one position Reporting event type, where the location reporting indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side;

The second receiving module 62 is configured to receive an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the secondary service side.

In an implementation manner, the downlink message is an NGAP downlink message, and the NGAP downlink message includes at least one of a first location reporting instruction, a second location reporting instruction, and a third location reporting instruction;

The first location report indication is used to indicate to report the connection mode of the terminal; the second location report indication is used to indicate to report location information of the terminal on the secondary service side; the third location report indication is used to indicate Jointly report the location information of the terminal on the primary base station side and the secondary serving side.

In an implementation manner, the location reporting event type in the location reporting configuration information includes at least one of the following:

Report the change of the multi-connection mode of the terminal;

Report the auxiliary serving cell or the set of auxiliary serving cells;

In an implementation manner, the second sending module 61 is further configured to send the NGAP download to the main base station The NGAP downlink message includes a first location report indication and the location report configuration information, the first location report indication is used to indicate to report the connection mode of the terminal, and the location in the location report configuration information The reported event type includes the change of the multi-connection mode of the reporting terminal;

The second receiving module 62 is further configured to receive an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, including: receiving an event that the primary base station responds to a change in the multi-connection mode of the terminal In the sent NGAP uplink message, the NGAP uplink message includes whether the terminal is in the multi-connection mode, the time when the multi-connection mode of the terminal is changed, the length of time the terminal is in various multi-connection modes, the current and the At least one of the number of secondary base stations to which the terminal is connected, and the current secondary serving cell or set of secondary serving cells of the terminal.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message NGAP downlink message to the primary base station, where the NGAP downlink message includes a second location report indication and the location report configuration information, and The second location report indication is used to indicate to report location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells;

The second receiving module 62 is further configured to receive an NGAP uplink message sent by the primary base station in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, where the NGAP uplink message includes the current secondary serving cell of the terminal. Information about serving cell or auxiliary serving cell collection.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message to the primary base station, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location The reporting indication is used to instruct to report the location information of the terminal on the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting secondary serving cell or secondary serving cell set change;

The second receiving module 62 is further configured to receive an NGAP uplink message sent by the primary base station in response to an event that the current secondary serving cell or secondary serving cell set of the terminal changes, where the NGAP uplink message includes the terminal Information about the secondary serving cell or set of secondary serving cells after the change.

In an implementation manner, the second sending module 61 is further configured to send the NGAP download to the main base station Message, the NGAP downlink message includes a second location report instruction and the location report configuration information, the second location report instruction is used to instruct to report the location information of the terminal on the secondary service side, and the location report configuration The location report event type in the information includes the presence of the reporting terminal within the AOI range on the secondary base station side;

The second receiving module 62 is further configured to receive an NGAP uplink message sent by the primary base station in response to an event that the terminal appears within the AOI range on the secondary base station side, and the NGAP uplink message includes the current appearance of the terminal Information within the AOI range on the secondary base station side.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third position report indication and the position report configuration information, and the third position The reporting indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting a secondary serving cell or a set of secondary serving cells;

The second receiving module 62 is further configured to receive an NGAP uplink message sent by the primary base station in response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, where the NGAP uplink message includes the current secondary serving cell of the terminal. Information of the serving cell or the set of secondary serving cells and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third position report indication and the position report configuration information, and the third position The reporting indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting secondary serving cell or secondary serving cell set change;

The second receiving module 62 is further configured to receive an NGAP uplink message sent by the primary base station in response to an event that the current secondary serving cell or secondary serving cell set of the terminal changes, where the NGAP uplink message includes the terminal occurrence The information of the changed secondary serving cell or the set of secondary serving cells and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message to the primary base station, where the NGAP downlink message includes a third position report indication and the position report configuration information, and the third position The report indication is used to indicate to jointly report the location information of the terminal on the primary base station side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range of the secondary base station side;

The second receiving module 62 is further configured to receive the primary base station in response to the appearance of the terminal on the secondary base station. The NGAP uplink message sent by an event within the AOI range on the station side, the NGAP uplink message includes the information that the terminal currently appears within the AOI range on the secondary base station side and the ULI of the terminal currently on the primary base station side.

In an implementation manner, the second sending module 61 is further configured to send an NGAP downlink message to the primary base station, and the location report event type in the location report configuration information in the NGAP downlink message includes at least one of the following: Stop reporting the location information of the terminal on the secondary serving side, stop reporting the secondary serving cell of the terminal or change of the secondary serving cell set, and stop reporting that the terminal appears within the AOI range on the secondary base station side.

In an implementation manner, the downlink message further includes a reference index identifier corresponding to at least one set of location report configuration information, and the uplink message further includes the same location report configuration information as in the received downlink message. The corresponding reference index ID.

For the functions of the modules in the devices in the embodiments of the present application, refer to the corresponding descriptions in the foregoing method embodiments, and details are not described herein again.

The present application provides a network device, where the network device includes a processor and a memory; the processor is configured to execute a program stored in the memory, so as to implement the method in the foregoing embodiment of the present application.

The present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, the method in the foregoing embodiment is implemented.

Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, this application may adopt the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a bootable computer or other programmable data processing equipment In a computer-readable memory that works in a specific manner, the instructions stored in the computer-readable memory generate an article of manufacture including an instruction device, which implements one process or multiple processes in a flowchart and/or a block in a block diagram Or functions specified in multiple boxes.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment is executed The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Claims

1. A method for obtaining a terminal location, including:

Receive a downlink message from an access mobility function AMF network element, where the downlink message includes a position report indication and a position report configuration information of the terminal on the auxiliary service side, and the position report configuration information includes at least one position report event Types of;

According to the position report instruction, obtain the current position information of the terminal on the auxiliary service side; and send an uplink message to the AMF network element in response to an event corresponding to the position report configuration information, where the uplink message Includes the current location information result of the terminal on the auxiliary service side.

2. The method according to claim 1, wherein said receiving a downlink message from an AMF network element comprises:

Receive a next-generation application protocol NGAP downlink message from the AMF network element, where the NGAP downlink message includes a first position report indication and the position report configuration information, and the first position report indication is used to instruct to report all The connection mode of the terminal, and the location report event type in the location report configuration information includes reporting the change of the multi-connection mode of the terminal;

The sending an uplink message to the AMF network element in response to the event corresponding to the location reporting configuration information includes:

In response to the event that the multi-connection mode of the terminal changes, an NGAP uplink message is sent to the AMF network element, where the NGAP uplink message includes at least one of the following: whether the terminal is in the multi-connection mode, the terminal The time at which the multi-connection mode changes, the length of time the terminal is in multiple multi-connection modes, the number of secondary base stations currently connected to the terminal, and information about the current secondary serving cell or secondary serving cell set of the terminal.

3. The method according to claim 2, wherein the event of the change of the multi-connection mode of the terminal includes at least one of the following: the terminal changes from the single connection mode to the multi-connection mode, and the terminal changes from the The multi-connection mode is changed to the single-connection mode, the secondary base station to which the terminal is currently connected in the multi-connection mode is changed, the number of secondary base stations to which the terminal is currently connected in the multi-connection mode is changed, In the multi-connection mode, the number of secondary serving cells or sets of secondary serving cells to which the terminal is currently connected changes.

4. The method according to claim 1, wherein the receiving a downlink message from an AMF network element comprises:

Receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location report indication is used to instruct to report that the terminal is at all The location information of the auxiliary service side, the location in the location report configuration information The report event type includes reporting the current auxiliary serving cell or the set of auxiliary serving cells;

In response to an event that the terminal is in a secondary serving cell or a set of secondary serving cells, send an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the current secondary serving cell or set of secondary serving cells of the terminal Information.

5. The method according to claim 1, wherein the receiving a downlink message from an AMF network element comprises:

Receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location report indication is used to instruct to report that the terminal is at all For the location information of the secondary serving side, the location reporting event type in the location reporting configuration information includes reporting a current secondary serving cell or a change in a set of secondary serving cells;

In response to the event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, an NGAP uplink message is sent to the AMF network element, where the NGAP uplink message includes the secondary serving cell after the terminal is changed Or information about the set of auxiliary serving cells.

6. The method according to claim 1, wherein the receiving a downlink message from an AMF network element comprises:

Receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a second location report indication and the location report configuration information, and the second location report indication is used to instruct to report that the terminal is at all The location information of the secondary serving side, the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI area of interest on the secondary base station side; and the response corresponding to the location reporting configuration information The event, sending an uplink message to the AMF network element, includes:

In response to the event that the terminal appears within the AOI range on the secondary base station side, send an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the AOI range where the terminal currently appears on the secondary base station side Information within.

7. The method according to claim 1, wherein said receiving a downlink message from an AMF network element comprises:

Receiving an NGAP downlink message from the AMF network element, where the NGAP downlink message includes Including a third location report instruction and the location report configuration information, the third location report instruction is used to instruct to jointly report the location information of the terminal on the primary service side and the secondary service side, and the location report configuration information The location reporting event type includes reporting the current auxiliary serving cell or the set of auxiliary serving cells;

In response to the event that the terminal is in the secondary serving cell or the set of secondary serving cells, send an NGAP uplink message to the AMF network element, where the NGAP uplink message includes the current secondary serving cell or set of secondary serving cells of the terminal And the user location information ULI of the terminal currently on the primary service side.

8. The method according to claim 1, wherein said receiving a downlink message from an AMF network element comprises:

Receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third position report indication and the position report configuration information, and the third position report indication is used to instruct to jointly report that the terminal is The location information of the primary serving side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting the current secondary serving cell or the set of secondary serving cells change; the response corresponding to the location reporting configuration information The event, sending an uplink message to the AMF network element, includes:

In response to the event that the current secondary serving cell or the set of secondary serving cells of the terminal changes, an NGAP uplink message is sent to the AMF network element, where the NGAP uplink message includes the secondary serving cell or the secondary serving cell after the terminal is changed. The information of the secondary serving cell set and the ULI of the terminal currently on the primary serving side.

9. The method according to claim 1, wherein the receiving a downlink message from an AMF network element comprises:

Receive an NGAP downlink message from the AMF network element, where the NGAP downlink message includes a third position report indication and the position report configuration information, and the third position report indication is used to instruct to jointly report that the terminal is Location information of the primary serving side and the secondary serving side, and the location reporting event type in the location reporting configuration information includes reporting that the terminal appears within the AOI range on the secondary base station side;

In response to the event that the terminal appears within the AOI range on the secondary base station side, report to the AMF network element Sending an NGAP uplink message, where the NGAP uplink message includes the information that the terminal currently appears within the AOI range of the secondary base station side and the ULI of the terminal currently on the primary serving side.

10. The method according to any one of claims 1 to 9, wherein the location reporting event type in the location reporting configuration information further comprises at least one of the following: stop reporting the terminal's information on the auxiliary service side Position information, stop reporting the secondary serving cell or secondary serving cell set change of the terminal, stop reporting that the terminal appears within the AOI range on the secondary base station side.

11. The method according to any one of claims 1 to 9, wherein the downlink message further includes a reference index identifier corresponding to at least one set of location reporting configuration information, and the uplink message further includes The configuration information and its corresponding reference index identifier are reported at the same position in the received downlink message.

12. The method according to any one of claims 1 to 9, wherein the obtaining the current location information of the terminal on the auxiliary service side according to the location report instruction comprises:

According to the location report instruction, the current location information of the terminal on the auxiliary service side is obtained through the Xn application protocol XnAP interface or the F1 application protocol F1AP interface.

13. The method according to claim 12, wherein the obtaining the current location information of the terminal on the auxiliary service side through the XnAP interface or the F1AP interface comprises:

Send a location information request message to the secondary base station through the XnAP interface, where the location information request message includes the identification information of the terminal; receive the location returned by the secondary base station according to the terminal identification information through the XnAP interface An information response message, where the location information response message includes user location information SN-ULI of the terminal currently on the secondary base station side; or

Send a location information request message to the secondary serving cell of the primary base station or the next-generation base station distributed processing unit gNB-DU node to which the set of secondary serving cells belongs through the F1AP interface, where the location information request message includes the identification of the terminal Information; receiving, through the FI AP interface, the location information response message returned by the secondary serving cell of the primary base station or the gNB-DU node to which the set of secondary serving cells belongs according to the identification information of the terminal, where the location information response message Includes the information of the secondary serving cell or the set of secondary serving cells of the terminal currently on the primary base station side.

14. The method according to claim 12, wherein the acquiring location information of the terminal on the auxiliary service side through an XnAP interface or an F1AP interface comprises:

Receiving the location information of the terminal on the secondary serving side from the secondary base station through the XnAP interface; or

Through the F1AP interface, receive information from the secondary serving cell of the primary base station or the gNB-DU node to which the secondary serving cell set belongs to the terminal in the secondary serving cell or secondary serving cell set of the primary base station.

15. The method according to any one of claims 1 to 9, wherein the secondary serving side includes at least one of a secondary serving cell on the primary base station side, a secondary serving cell set on the primary base station side, and a secondary base station side.

16. A method for acquiring a terminal location, including:

Send a downlink message to the primary base station, where the downlink message includes a position report indication of the terminal on the secondary serving side and position report configuration information, the position report configuration information includes at least one type of position report event, and the position report The indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side;

Receiving an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the auxiliary service side.

17. The method according to claim 16, wherein the downlink message is a next-generation application protocol NGAP downlink message, and the NGAP downlink message includes a first location report instruction, a second location report instruction, and a third location report instruction At least one of

Wherein, the first location report indication is used to indicate to report the connection mode of the terminal; the second location report indication is used to indicate to report the location information of the terminal on the auxiliary service side; the third location report The indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side.

18. The method according to claim 16 or 17, wherein the location reporting event type in the location reporting configuration information includes at least one of the following:

Reporting the change of the multi-connection mode of the terminal;

Report the auxiliary serving cell or the set of auxiliary serving cells;

Report that the terminal appears within the AOI range of the area of interest on the secondary base station side;

Stop reporting that the terminal appears within the AOI range of the secondary base station side.

19. A terminal location acquisition device, including:

The first receiving module is configured to receive a downlink message from an access mobility function AMF network element, where the downlink message includes a position report indication and position report configuration information of the terminal on the auxiliary service side, and the position report configuration The information includes at least one location report event type;

A first obtaining module, configured to obtain the current location information of the terminal on the auxiliary service side according to the location report instruction; The first sending module is configured to send an uplink message to the AMF network element in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information of the terminal on the auxiliary service side result.

20. The apparatus according to claim 19, wherein the first obtaining module is further configured to obtain the terminal's current location in the auxiliary device through an Xn application protocol XnAP interface or an F1 application protocol F1AP interface according to the location report instruction. Location information on the server side.

21. The apparatus according to claim 19 or 20, wherein the downlink message is a next-generation application protocol NGAP downlink message, and the NGAP downlink message includes a first position report indication, a second position report indication, and a third position At least one of the reporting instructions;

Wherein, the first location report indication is used to indicate to report the connection mode of the terminal; the second location report indication is used to indicate to report the location information of the terminal on the auxiliary service side; and the third location report The indication is used to instruct to jointly report the location information of the terminal on the primary base station side and the secondary serving side.

22. The apparatus according to claim 19 or 20, wherein the location reporting event type in the location reporting configuration information includes at least one of the following:

Reporting the change of the multi-connection mode of the terminal;

Report the auxiliary serving cell or the set of auxiliary serving cells;

23. A terminal location acquisition device, including:

The second sending module is configured to send a downlink message to the primary base station, where the downlink message includes a position report indication of the terminal on the secondary serving side and position report configuration information, and the position report configuration information includes at least one A location reporting event type, where the location reporting indication is used to instruct the primary base station to obtain the current location information of the terminal on the secondary serving side;

The second receiving module is configured to receive an uplink message sent by the primary base station in response to an event corresponding to the location report configuration information, where the uplink message includes the current location information result of the terminal on the auxiliary service side .

24. The apparatus according to claim 23, wherein the downlink message is a next-generation application Use the protocol NGAP downlink message, where the NGAP downlink message includes at least one of a first location report instruction, a second location report instruction, and a third location report instruction;

25. The apparatus according to claim 23, wherein the location reporting event type in the location reporting configuration information includes at least one of the following:

Reporting the change of the multi-connection mode of the terminal;

Report the auxiliary serving cell or the set of auxiliary serving cells;

26. A network device including a processor and a memory;

Wherein, the processor is configured to execute a program stored in the memory, so as to implement the method according to any one of claims 1-18.

27. A storage medium storing a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1-18 is implemented.