WO2019196817A1 - 一种定位方法及相关设备 - Google Patents

一种定位方法及相关设备 Download PDF

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Publication number
WO2019196817A1
WO2019196817A1 PCT/CN2019/081858 CN2019081858W WO2019196817A1 WO 2019196817 A1 WO2019196817 A1 WO 2019196817A1 CN 2019081858 W CN2019081858 W CN 2019081858W WO 2019196817 A1 WO2019196817 A1 WO 2019196817A1
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WO
WIPO (PCT)
Prior art keywords
network element
terminal device
location
access type
indication information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/081858
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English (en)
French (fr)
Inventor
朱浩仁
诸华林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP19785196.7A priority Critical patent/EP3761679B1/en
Priority to BR112020020623-7A priority patent/BR112020020623A2/pt
Publication of WO2019196817A1 publication Critical patent/WO2019196817A1/zh
Priority to ZA2020/06094A priority patent/ZA202006094B/en
Priority to US17/067,342 priority patent/US11457331B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/303—Terminal profiles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0257—Hybrid positioning
    • G01S5/0263—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a positioning method and related devices.
  • the fifth-generation (5th-Generation, 5G) mobile communication technology standard defines a positioning process suitable for different scenarios, including a network-initiated location request request (NI-LR) and a mobile termination location request process (Mobile). Terminating Location Request (MT-LR), Mobile Originating Location Request (MO-LR), etc.
  • NI-LR network-initiated location request request
  • Mobile mobile termination location request process
  • Terminating Location Request MT-LR
  • MO-LR Mobile Originating Location Request
  • the above positioning process is currently designed primarily for 5G's 3rd Generation Partnership Project (3GPP) architecture.
  • 3GPP 3rd Generation Partnership Project
  • N3GPP non-3GPP access architecture
  • the prior art does not teach how to perform positioning.
  • the embodiment of the present application discloses a positioning method and related device, which can prevent the finally determined positioning method from being applicable to the current access type of the terminal device.
  • the embodiment of the present application provides a positioning method, where the method includes: determining, by a location management function, a positioning method of the terminal device according to an access type of the terminal device, and acquiring an access type of the positioning parameter;
  • the management function network element sends the positioning method and the indication information to the mobility management network element, where the indication information is used to instruct the mobility management network element to acquire the positioning parameter by using the access type of acquiring the positioning parameter.
  • the location management function network element LMF is determined according to the terminal when determining the positioning method.
  • the current access type of the device can prevent the finalized positioning method from being applicable to the current access type of the terminal device.
  • the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, including: the location management function network element is configured according to The access type of the terminal device and the connection state of the terminal device determine a positioning method of the terminal device and an access type for acquiring a positioning parameter. It can be seen that the positioning method in which the corresponding access network device cannot be real-time can be filtered out through the connection state.
  • the location management function network element before the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, the location management function network element further includes: the location management function.
  • the network element sends a request message to the mobility management network element, where the request message is used to request location information of the terminal device, access type information of the terminal device, and at least one of the connection state information. .
  • the location management function network element before the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, the location management function network element further includes: the location management function. Receiving, by the network element, a location request message sent by the mobility management network element, where the location request message includes a current access type of the terminal device and the connection state, or the location request message includes a current location of the terminal device Access type.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate an access type of the acquiring a positioning parameter, and the second indication information is And the method is configured to obtain the positioning parameter according to an access type of the positioning parameter and a connection state of the terminal device.
  • the location management function network element before the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, the location management function network element further includes: the location management function.
  • the network element receives the location request message sent by the mobility management network element, where the location request message includes a current access type of the terminal device.
  • the embodiment of the present application provides a positioning method, where the method includes: a mobility management network element receives a positioning method and indication information of a terminal device sent by a network element of a location management function, where the indication information is used to indicate acquiring a positioning parameter.
  • the access management type acquires the positioning parameter of the terminal device according to the positioning method and the indication information.
  • the location management function network element LMF is determined according to the terminal when determining the positioning method.
  • the current access type of the device can prevent the finalized positioning method from being applicable to the current access type of the terminal device.
  • the method before the mobility management network element receives the location method and the indication information of the terminal device sent by the location management function network element, the method further includes: the mobility management network element receiving the location management function a request message sent by the network element; the mobility management network element sends the location information of the terminal device to the location management function network element according to the request message, the access type information of the terminal device, and the connection At least one of the status information.
  • the method before the mobility management network element receives the location method and the indication information of the terminal device sent by the location management function network element, the method further includes: the mobility management network element managing the location The function network element receives the sending location request message, where the location request message includes the current access type of the terminal device and the connection state, or the location request message includes the current access type of the terminal device.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate an access type of the acquiring a positioning parameter, and the second indication information is And the acquiring the positioning parameter according to the access type of the positioning parameter and the connection state of the terminal device; the mobility management network element acquiring the positioning parameter of the terminal device according to the positioning method and the indication information,
  • the method includes: acquiring, by the mobility management network element, a positioning parameter of the terminal device according to the positioning method, the first indication information, and the second indication information. It can be seen that the positioning method in which the corresponding access network device cannot be real-time can be filtered out through the connection state.
  • the method before the mobility management network element receives the location method and the indication information of the terminal device sent by the location management function network element, the method further includes: the mobility management network element managing the location The function network element sends a location request message, where the location request message includes an access type of the terminal device.
  • the indication information indicates the first access type and the second access type; the mobility management network element acquires the according to the positioning method and indication information.
  • the positioning parameter of the terminal device includes: the mobility management network element selects an access point from a first access point of the first access type and a second access point of the second access type. Obtaining a positioning parameter of the terminal device.
  • the embodiment of the present application provides a location management function network element, where the location management function network element includes a transceiver unit and a processing unit, where the processing unit is configured to determine the terminal according to an access type of the terminal device. a positioning method of the device and an access type for obtaining the positioning parameter; the transceiver unit is configured to send the positioning method and the indication information to the mobility management network element, where the indication information is used to indicate that the mobility management network element is used Obtaining the positioning parameter by acquiring the access type of the positioning parameter.
  • the location management function network element there are multiple possibilities for the current access type of the terminal device, and different access methods are also applicable to the access type.
  • the location management function network element LMF determines the positioning method. According to the current access type of the terminal device, it can be avoided that the finally determined positioning method is not applicable to the current access type of the terminal device.
  • the processing unit is configured to determine, according to an access type of the terminal device, a positioning location management function network element of the terminal device, and an access type for obtaining a positioning parameter, specifically: the processing And a unit, configured to determine, according to an access type of the terminal device and a connection state of the terminal device, a positioning location management function network element of the terminal device, and an access type for acquiring a positioning parameter. It can be seen that the positioning method in which the corresponding access network device cannot be real-time can be filtered out through the connection state.
  • the transceiver unit is further configured to determine, according to an access type of the terminal device, the positioning location management function network element of the terminal device, and an access type for acquiring a positioning parameter, according to the access type of the terminal device. And sending a request message to the mobility management network element, where the request message is used to request location information of the terminal device, access type information of the terminal device, and at least one of the connection state information. .
  • the transceiver unit is further configured to determine, according to an access type of the terminal device, the positioning location management function network element of the terminal device, and an access type for acquiring a positioning parameter, according to the access type of the terminal device. And receiving the location request message sent by the mobility management network element, where the location request message includes a current access type of the terminal device and the connection state, or the location request message includes a current location of the terminal device. Access type.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate an access type of the acquiring a positioning parameter, and the second indication information is And the method is configured to obtain the positioning parameter according to an access type of the positioning parameter and a connection state of the terminal device.
  • the transceiver unit is further configured to determine, according to an access type of the terminal device, the positioning location management function network element of the terminal device, and an access type for acquiring a positioning parameter, according to the access type of the terminal device.
  • the location request message sent by the mobility management network element is received, where the location request message includes a current access type of the terminal device.
  • the embodiment of the present application provides a mobility management network element, including a transceiver unit and a processing unit, where:
  • the transceiver unit is configured to receive a positioning mobility management network element and indication information of the terminal device that is sent by the location management function network element, where the indication information is used to indicate an access type for acquiring a positioning parameter, and the processing unit is configured to: Obtaining a positioning parameter of the terminal device according to the positioning mobility management network element and the indication information.
  • the location management function network element LMF is determined to be located. In the method, according to the current access type of the terminal device, it can be avoided that the finally determined positioning method is not applicable to the current access type of the terminal device.
  • the transceiver unit is further configured to: before receiving the location mobility management network element and the indication information of the terminal device sent by the location management function network element, receive the location management function network element to send a request message, the transceiver unit is further configured to send the location information of the terminal device to the location management function network element according to the request message, the access type information of the terminal device, and the connection state information. At least one of them.
  • the transceiver unit is further configured to receive, before receiving the location mobility management network element and the indication information of the terminal device sent by the location management function network element, the location management function network element. Sending a location request message, where the location request message includes a current access type of the terminal device and the connection state, or the location request message includes a current access type of the terminal device.
  • the indication information includes first indication information and second indication information, where the first indication information is used to indicate an access type of the acquiring a positioning parameter, and the second indication information is
  • the processing unit is configured to acquire the positioning parameter according to the access type of the positioning parameter and the connection state of the terminal device, where the processing unit is configured to acquire the terminal device according to the positioning mobility management network element and the indication information.
  • the positioning parameter is specifically: the processing unit is configured to acquire the positioning parameter of the terminal device according to the positioning mobility management network element, the first indication information, and the second indication information. It can be seen that the positioning method in which the corresponding access network device cannot be real-time can be filtered out through the connection state.
  • the transceiver unit is further configured to send, to the location management function network element, before receiving the location mobility management network element and the indication information of the terminal device sent by the location management function network element. And a positioning request message, where the positioning request message includes an access type of the terminal device.
  • the indication information indicates the first access type and the second access type
  • the processing unit is configured to acquire the positioning parameter of the terminal device according to the positioning mobility management network element and the indication information, where the processing unit is configured to use the first connection from the first access type.
  • the access point and the second access point of the second access type are selected to perform the positioning mobility management network element to obtain the positioning parameter of the terminal device.
  • the location information includes a cell identifier of the terminal device camping cell, and an internet protocol address IP of the terminal device. And a source user datagram protocol UDP port number of the terminal device and at least one of a network element identifier of a non-3th generation partner plan 3GPP interconnect function network element connected to the terminal device.
  • the indication information is specifically used to indicate an access type according to the positioning parameter and a connection status of the terminal device. Obtain the positioning parameter.
  • the access type comprises using a 3rd Generation Partnership Project 3GPP technology access and/or not using the third generation Partner Program N3GPP technology access.
  • connection status includes a first between the terminal device and a first access point of the first access type. a state of a link and a state of a second link between the terminal device and a second access point of the second access type.
  • the present application provides a computer readable storage medium having stored therein program instructions, when the program instructions are executed on a processor, implementing the first aspect or the second aspect Methods.
  • the present application provides a program product that implements the method described in the first aspect or the second aspect when the program product is run on a processor.
  • the location management function network element LMF determines the positioning method. According to the current access type of the terminal device, it can be avoided that the finally determined positioning method is not applicable to the current access type of the terminal device.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of still another communication system according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a positioning method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart diagram of still another positioning method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of still another positioning method provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a location management function network element according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of still another location management function network element according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a mobility management network element according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of still another mobility management network element according to an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure, where the wireless communication system includes a terminal device, a next-generation wireless access node NGRAN, a non-3GPP access network device, an N3IWF, an AMF, LMF, SMF, UPF, may also include other network elements but not shown here; in addition, N1, N2, N3, N4, N6, N11, Y1, Y2 are used to indicate different message types; The various network elements listed above are introduced.
  • Terminal equipment can be user equipment (UE), handheld terminal, notebook computer, subscriber unit, cellular phone, smart phone, wireless data card, personal digital assistant (personal Digital assistant, PDA) computer, tablet, wireless modem, handheld, laptop computer, cordless phone, or wireless local loop (WLL)
  • UE user equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine type communication
  • Next Generation Radio Access Node It is also an access network device. It is mainly responsible for radio resource management, quality of service (QoS) management, data compression and encryption on the air interface side.
  • the access network device may include various forms of base stations, such as a macro base station, a micro base station (also referred to as a small station), a relay station, an access point, and the like.
  • the name of a device having a base station function may be different, for example, in a 5th generation (5th generation, 5G) system, called gNB; in an LTE system, It is an evolved Node B (eNB or eNodeB); in a 3rd generation (3G) system, it is called a Node B or the like.
  • 5G 5th generation
  • gNB 5th generation
  • LTE Long Term Evolution
  • eNB evolved Node B
  • 3G 3rd generation
  • Access and mobility management function (AMF) network element belongs to the core network element and is mainly responsible for signaling processing, such as access control, mobility management, attach and detach, and gateway selection.
  • AMF Access and mobility management function
  • the AMF network element provides a service for the session in the terminal device, the storage resource of the control plane is provided for the session, and the session identifier, the SMF network element identifier associated with the session identifier, and the like are stored.
  • Non-3GPP Access Network device allows non-3GPP technology interworking between the terminal device and the 3GPP core network.
  • non-3GPP technologies such as Wireless Fidelity (Wi-Fi) ), Worldwide Interoperability for Microwave Access (WiMAX) network, etc.
  • the non-3GPP access network device may be an untrusted non-3GPP access network device.
  • the 3GPP core network can be directly connected to the trusted non-3GPP access network device, and the network element needs to communicate with the 3GPP core network through a secure tunnel established by the security gateway, for example, an evolved packet data gateway (Evolved) Packet Data Gateway (ePDG) or non-3GPP Interworking Function (N3IWF) network element.
  • Evolved evolved packet data gateway
  • ePDG Packet Data Gateway
  • N3IWF non-3GPP Interworking Function
  • Non-3GPP Interworking Function (N3IWF) network element:
  • the network element is a security gateway between the untrusted non-3GPP access network device and the 3GPP core network.
  • the network element is used to provide interaction between the required positioning method according to the positioning accuracy requirement, the delay requirement, and the corresponding communication protocol to complete the positioning.
  • the LMF is also used to provide additional information needed for location services, or to locate policies.
  • Session Management Function responsible for user plane network element selection, user plane network element redirection, Internet protocol (IP) address allocation, bearer establishment, modification and release, and QoS control.
  • IP Internet protocol
  • User Plane Function (UPF) NE responsible for forwarding and receiving user data in the terminal device.
  • the user data may be received from the data network and transmitted to the terminal device through the access network device.
  • the UPF network element may also receive user data from the terminal device through the access network device and forward the data to the data network.
  • the transmission resources and scheduling functions for the terminal devices in the UPF network element are managed and managed by the SMF network element.
  • the functions and interfaces of the network elements are merely exemplary. When each network element is applied to the embodiment of the present application, not all functions are required. All or part of the network element of the core network may be a physical entity network element or a virtualized network element, which is not limited herein.
  • "/" is merely an association relationship describing an association object, indicating that there may be three relationships.
  • A/B can mean that there are three cases where A exists separately, and A and B exist at the same time, and B exists separately.
  • "a plurality" means two or more than two.
  • a network element obtains information from another network element (for example, a B network element), and may refer to that the A network element directly receives information from the B network element, or may The A network element receives information from the B network element through other network elements (for example, the C network element).
  • the C network element can transparently transmit information, and can also process the information, for example, carrying the information in different messages for transmission or filtering the information. Only the filtered information is sent to the A network element.
  • the A network element sends information to the B network element, which may be that the A network element directly sends information to the B network element, and may also refer to the A network element passing through other network elements (for example, the C network). Meta) sends information to the B network element.
  • the information interaction process mainly involves the network element including LMF201, AMF202, NGRAN203, N3IWF204, terminal device 205 and service invoking device 206.
  • the corresponding architecture is shown in Figure 2 (the dotted line indicates the need The links of other nodes are relayed, and the solid line indicates that the links of other nodes are not required to be transferred.
  • the subsequent positioning method flow will focus on the network elements in the architecture shown in Figure 2.
  • FIG. 3 is a positioning method provided by an embodiment of the present application.
  • the method may be applied to a network triggered positioning request procedure NI-LR, a mobile termination positioning request procedure MT-LR, and a mobile origination positioning request procedure MO.
  • a positioning scenario such as -LR, the method includes but is not limited to the following steps:
  • Step S301 The mobility management network element AMF sends the location request message to the location management network element.
  • the AMF receiving service invoking device sends (directly or indirectly) a positioning request message for the terminal device, where the positioning request message includes a positioning requirement, for example, a delay request, an accuracy requirement, and the like.
  • the AMF forwards the location requirement message of the service invoking device to the LMF, so that the LMF selects one or some positioning methods that can satisfy the positioning requirement from among a plurality of positioning methods.
  • Current positioning methods include, but are not limited to, network assisted Global Navigation Satellite System (GNSS) methods, downlink positioning, enhanced cell ID (eCID) positioning, upstream positioning, air pressure sensor positioning, wireless local area network (Wireless Local Area Networks, WLAN positioning), Bluetooth positioning and terrestrial beacon system positioning methods.
  • the service invoking device may be a network expo function (NEF) network element, a positioning server, etc., or the AMF itself may be a service invoking device. If the AMF is a service invoking device, then the AMF in step S301 It is not necessary to receive the location request message sent by other devices.
  • NEF network expo function
  • Step S302 The location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device.
  • the location management network element not only considers the requirements of accuracy, delay, etc., but also considers the current access type of the terminal device, that is, when other factors (accuracy, delay, etc.) are the same, If the access types of the terminal devices are different, the location management function network element LMF determines that the location methods of the terminal devices are different.
  • the access type of the terminal device has the following three possibilities: 1. the terminal device accesses through the 3GPP technology; 2. the terminal device accesses through the non-3GPP technology; 3. the terminal device accesses and passes the 3GPP technology. Non-3GPP technology access.
  • the application also needs to determine the required access type for obtaining the positioning parameter, so as to obtain the positioning parameters required for positioning the terminal device based on the access type. For example, if the downlink positioning method needs to be implemented based on the access type of 3GPP access to obtain the positioning parameter, the access type for acquiring the positioning parameter needs to be 3GPP access; for example, the WLAN positioning method can be based on 3GPP access and non- The 3GPP accesses the two access types to implement to obtain positioning parameters, and the type of obtaining the positioning parameters may be 3GPP access and/or non-3GPP access.
  • the positioning parameter may include a cell identifier (Cell ID) of the terminal device accessing the cell, an identifier of the N3IWF accessed by the terminal device, an IP address of the terminal device, WLAN information related to the terminal device, latitude and longitude information of the terminal device, and a terminal. At least one of a wireless signal strength and a propagation delay of the device.
  • the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, which specifically includes but is limited to the following two situations:
  • the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, and the location management network element determines that the location method does not use the connection state of the terminal.
  • the connection status of the terminal device includes a state of a first link between the terminal device and a first access point (eg, NGRAN) of a first access type (eg, a 3GPP access type), and the The state of the second link between the terminal device and a second access point (e.g., N3 IWF) of the second access type (e.g., non-3GPP access type).
  • the state of any one of the links may be a connected state or an idle state.
  • the access type of the terminal device used by the terminal device can be obtained as follows:
  • the location management function network element sends a request message to the mobility management network element, where the request message is used to request access type information of the terminal device, and correspondingly, the mobility management network element is configured according to the The request message feeds back the obtained access type information of the terminal device to the location management network element.
  • the location management function network element may further request location information of the terminal by sending a request message, where the location information includes a cell identifier of the camped cell of the terminal device, an internet protocol address IP of the terminal device, At least one of a source user datagram protocol UDP port number of the terminal device and a network element identifier of a non-3GPP interconnect function network element to which the terminal device is connected.
  • the location management function network element sends a subscription request message to the mobility management network element, for example, through a Namf_Event Exposure_Subscribe interface, where the subscription request message is used to request a location
  • the mobility management network element performs the following operations:
  • the location information of the terminal device changes, the location information is fed back to the location management network element, where the feedback location information includes location information after the change occurs, and may also include location information before the change occurs. It should be noted that the location information may be used to estimate the approximate location of the terminal device. When the accuracy requirement is not high, the location where the location information is identified may be directly located at the location of the terminal device. This operation 1 is an optional operation.
  • the access management type of the terminal device is fed back to the location management network element;
  • the feedback access type includes an access type after the change, and may also include The type of access before the change occurred.
  • the mobility management network element AMF feeds back information such as location information, access type, and the like to the location management function network element LMF immediately after receiving the subscription request message.
  • Mode B When the mobility management network element sends a location request message for requesting the location of the terminal device to the location management function network element (for example, through the Namf_Location_DetermineLocation serviced interface), the mobility request network element actively carries the current location of the terminal device in the location request message. The access type information, so that the location management function network element can obtain the current access type of the terminal device according to the location request message.
  • the location management function network element determines the location method of the terminal device and the access type of the location parameter according to the access type of the terminal device, and the process of determining the location method by the location management network element uses the connection state. For example, if some positioning methods are determined according to the access type (also positioning accuracy, positioning delay, etc.), and some of these positioning methods are only applicable to 3GPP access, some are only applicable to non-3GPP access. Some of the non-3GPP access types are in the idle state, and the location management network element can be filtered out from the positioning methods. In the non-3GPP positioning method, the remaining positioning method after the filtering is the positioning method of the terminal device that is determined by the location management network element according to the access type of the terminal device and the connection state of the terminal device.
  • the access type and connection status of the terminal device used by the terminal device can be obtained as follows:
  • the location management function network element sends a request message to the mobility management network element, where the request message is used to request access type information and connection status of the terminal device, and correspondingly, the mobility management network The element feeds back the access type information and the connection state information of the obtained terminal device to the location management network element according to the request message.
  • the location management function network element may further request location information of the terminal by sending a request message.
  • the mobility management network element performs the following operations:
  • operation 1 if the location information of the terminal device changes, the location information is fed back to the location management network element, where the feedback location information includes location information after the change occurs, and may also include location information before the change occurs.
  • This operation 1 is an optional operation.
  • the access management type of the terminal device is fed back to the location management network element;
  • the feedback access type includes an access type after the change, and may also include The type of access before the change occurred.
  • connection state of the terminal device changes, the connection state is fed back to the location management network element, and the feedback connection state includes the connection state after the change, and may also include changing the previous connection state.
  • the mobility management network element AMF feeds back information such as location information, access type, connection status, and the like to the location management function network element LMF immediately after receiving the subscription request message.
  • Mode B When the mobility management network element sends a location request message for requesting the location of the terminal device to the location management function network element (for example, through the Namf_Location_DetermineLocation serviced interface), the mobility request network element actively carries the current location of the terminal device in the location request message.
  • the access type information and the connection status information so that the location management function network element can obtain the current access type of the terminal device and the connection status of the terminal device according to the location request message; or the location request message actively carries the The current access type information of the terminal device, so that the location management function network element can obtain the current access type of the terminal device according to the location request message.
  • the location management network element obtains the connection status of the terminal device in other manners.
  • Step S303 The location management function network element sends the positioning method and the indication information to the mobility management network element.
  • Step S304 The mobility management network element receives a positioning method and indication information of the terminal device sent by the location management function network element.
  • Step S305 The mobility management network element acquires a positioning parameter of the terminal device according to the positioning method and the indication information.
  • the indication information is used to indicate that the mobility management network element acquires the positioning parameter by using the access type that acquires the positioning parameter.
  • the mobility management network element implements a positioning method sent by the location management network element according to the access type of the positioning parameter, thereby obtaining the positioning parameter.
  • the location management function network element also sends N1 or N2 type information to the mobility management network element for indicating whether to send the positioning method to the terminal device or the access node (for example, an access point of a 3GPP access type, or a non-3GPP) Access type access point) to tell which nodes get the positioning parameters.
  • the indication information further carries N1 or N2 type information, used to indicate whether the positioning method is sent to the UE or the access node (for example, an access point of a 3GPP access type, or a non-3GPP Access type access point) to tell which nodes get the positioning parameters.
  • the N1 type information is used to indicate that the positioning method is sent to the terminal device to acquire the positioning parameter by using the terminal device
  • the N2 type information is used to indicate that the positioning method is sent to the access node to acquire the positioning parameter by using the access node.
  • the indication information is included in the N1 or N2 type information.
  • the indication information is specifically used to indicate that the positioning parameter is obtained according to an access type of the positioning parameter and a connection state of the terminal device.
  • the indication information includes first indication information and second indication information, where the first indication information marks an access type of the positioning parameter determined above, and the second indication information indicates that the positioning parameter is determined according to the positioning parameter.
  • the positioning methods are only applicable to 3GPP access technologies, some are applicable only to non-3GPP access technologies, and some are applicable to 3GPP access technologies.
  • the technology is applicable to the non-3GPP access technology, and the connection status of the non-3GPP access type is idle.
  • the location management network element can filter the positioning method applicable only to non-3GPP from the positioning methods, and then The positioning method remaining after filtering is used to obtain the positioning parameter, specifically based on the access type applicable to the remaining positioning method.
  • the remaining positioning method is implemented to obtain positioning parameters.
  • the indication information further carries N1 or N2 type information, used to indicate whether the positioning method is sent to the UE or the access node (for example, an access point of a 3GPP access type, or a non-3GPP Access type access point) to tell which nodes get the positioning parameters.
  • the N1 type information is used to indicate that the positioning method is sent to the terminal device to acquire the positioning parameter by using the terminal device
  • the N2 type information is used to indicate that the positioning method is sent to the access node to acquire the positioning parameter by using the access node.
  • the indication information is included in the N1 or N2 type information.
  • the mobility management network element may select a part of the positioning methods from the multiple positioning methods as a final method for obtaining The positioning method of the positioning parameters. It is possible that some of the positioning methods need to be implemented by the 3GPP access type, and other positioning methods need to be implemented by the non-3GPP access type; it is also possible that the part of the positioning method needs to be implemented by the 3GPP access type; It is possible that this part of the positioning method needs to be implemented by a non-3GPP access type.
  • the foregoing indication information indicates the first access type and the second access type
  • the mobility management network element acquires the positioning parameter of the terminal device according to the positioning method and the indication information, which may be specifically:
  • the mobility management network element selects an access type from the first access type and the second access type to implement a positioning method, which is equivalent to a first access point and a location from the first access type.
  • One of the second access points of the second access type is selected to perform the positioning method.
  • the AMF sends the positioning method to the 3GPP access network device NGRAN, so that the NGRAN uses the positioning method to acquire the positioning parameter.
  • the NGRAN may send a message to the terminal device to enable the terminal device to acquire the positioning parameter and feed back to the NGRAN; then the NGRAN feeds back the positioning parameter to the AMF for forwarding by the AMF or processing and forwarding to the LMF. .
  • the AMF sends the positioning method to the security gateway N3IWF in the non-3GPP access, so that the N3IWF uses the positioning method to obtain the positioning parameter; optionally, the N3IWF can be used to the terminal.
  • the device sends a message to enable the terminal device to acquire the positioning parameter and feed back to the N3IWF; after that, the N3IWF feeds back the positioning parameter to the AMF for forwarding by the AMF or processing and forwarding to the LMF.
  • the LMF determines the location of the terminal device according to the positioning parameter, and sends the determined location to the AMF, and the AMF feeds back the location to the service invoking device (ie, the requester of the location of the terminal device).
  • the link between the access network device and the terminal device of the access type applicable to the positioning method determined by the location management function network element LMF according to the requirements of accuracy, delay, and the like is idle, then the link is idle.
  • the LMF may feed back an error prompt message to the AMF to notify that there is no applicable positioning method, or the location management network element re-determines a positioning method according to other information, and ensures that the re-determined positioning method is applicable between the access type and the terminal device.
  • the link is connected. It can be seen that the positioning method in which the corresponding access network device cannot be implemented can be filtered out by the connection state.
  • the location management function network element LMF is determining the location. In the method, according to the current access type of the terminal device, it can be avoided that the finally determined positioning method is not applicable to the current access type of the terminal device.
  • FIG. 3 describes various possible implementations. The following is a more complete description of the processes of several implementations in conjunction with FIGS. 4-6 to facilitate understanding, since the implementation principles of the important steps involved are in FIG. 3. The detailed description has been made in the illustrated embodiment, so the principle of the corresponding steps will not be explained too much here.
  • FIG. 4 is a positioning method provided by an embodiment of the present application.
  • the positioning method mainly sends a subscription request message sent by the LMF to the AMF to request an access type, a connection state, location information, and the like required for determining the positioning method.
  • the positioning method specifically includes the following steps:
  • Step 401 The LMF sends a subscription request message to the AMF.
  • Step 402 The AMF sends information such as location information, access type, and connection status to the LMF according to the subscription rule.
  • Step 403 The AMF sends a positioning request message for the terminal device to the LMF.
  • Step 404 The LMF selects a positioning method according to the access type and the connection state of the terminal device, and determines an access type to which the positioning method is applicable.
  • Step 405 The LMF sends the determined positioning method and the access type applicable to the positioning method to the AMF.
  • Step 406 The AMF implements the positioning method according to an access type to which the positioning method is applicable.
  • Step 407 If the determined positioning method is applicable to the 3GPP access type, the AMF implements the positioning method by using a 3GPP access type to obtain a positioning parameter.
  • Step 408 If the determined positioning method is applicable to the non-3GPP access type, the AMF uses the non-3GPP access type to implement the positioning method to obtain the positioning parameter.
  • Step 409 The AMF sends the acquired positioning parameters to the LMF.
  • Step 410 The LMF receives the positioning parameter sent by the AMF, and determines the location of the terminal device according to the positioning parameter.
  • Step 411 The LMF sends the location of the terminal device to the AMF, so that the AMF sends the location of the terminal device to the service invoking device.
  • FIG. 5 is a positioning method provided by an embodiment of the present application.
  • the positioning method mainly includes an access type, a connection state, and the like required for determining a positioning method when the AMF sends a positioning request message to the LMF; Including the following steps:
  • Step 501 The AMF sends a location request message for the terminal device to the LMF, where the location request message carries information such as an access type and a connection state.
  • Step 502 The LMF selects a positioning method according to the access type and the connection state of the terminal device, and determines an access type to which the positioning method is applicable.
  • Step 503 The LMF sends the determined positioning method and the access type applicable to the positioning method to the AMF.
  • Step 504 The AMF implements the positioning method according to an access type to which the positioning method is applicable.
  • Step 505 If the determined positioning method is applicable to the 3GPP access type, the AMF implements the positioning method by using a 3GPP access type to obtain a positioning parameter.
  • Step 506 If the determined positioning method is applicable to the non-3GPP access type, the AMF uses the non-3GPP access type to implement the positioning method to obtain the positioning parameter.
  • Step 507 The AMF sends the acquired positioning parameters to the LMF.
  • Step 508 The LMF receives the positioning parameter sent by the AMF, and determines the location of the terminal device according to the positioning parameter.
  • Step 509 The LMF sends the location of the terminal device to the AMF, so that the AMF sends the location of the terminal device to the service invoking device.
  • FIG. 6 is a positioning method provided by an embodiment of the present application.
  • the positioning method mainly determines that an approximate positioning method is first determined by the LMF according to an access type, and then the AMF is combined with the connection state to filter the determined positioning method. Therefore, the final positioning method is determined, and the positioning method specifically includes the following steps:
  • Step 601 The AMF sends a location request message to the LMF for the terminal device, where the location request message carries the access type.
  • Step 602 The LMF selects a positioning method according to the access type of the terminal device, and determines an access type to which the positioning method is applicable.
  • Step 603 The LMF sends the determined positioning method and the access type applicable to the positioning method to the AMF.
  • Step 604 The AMF selects a partial positioning method from the received positioning methods according to the connection state, and determines an access type to which the selected positioning method is applicable.
  • Step 605 If the determined positioning method is applicable to the 3GPP access type, the AMF implements the positioning method by using a 3GPP access type to obtain a positioning parameter.
  • Step 606 If the determined positioning method is applicable to the non-3GPP access type, the AMF uses the non-3GPP access type to implement the positioning method to obtain the positioning parameter.
  • Step 607 The AMF sends the acquired positioning parameters to the LMF.
  • Step 608 The LMF receives the positioning parameter sent by the AMF, and determines the location of the terminal device according to the positioning parameter.
  • Step 609 The LMF sends the location of the terminal device to the AMF, so that the AMF sends the location of the terminal device to the service invoking device.
  • each network element such as a location management function network element and a mobility management network element, in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function.
  • a location management function network element and a mobility management network element in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in conjunction with the network elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may divide the function module of the location management function network element and the mobility management network element according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated.
  • a processing module In a processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 7 is a schematic diagram showing a possible structure of the location management function network element involved in the foregoing embodiment.
  • the location management function network element includes: a processing unit 701, and a receiving and receiving unit. Unit 702.
  • the processing unit 701 is configured to support the location management function network element to perform other functions except the sending and receiving functions performed by the location management function network element in the method embodiment
  • the transceiver unit 702 is configured to support the location management function network element to perform location management.
  • the functional network element receives the information and sends the information in the method embodiment.
  • the processing unit 701 may be a processor or a processing circuit, etc.; the transceiver unit 702 may include a receiver and/or a transmitter, or include a receiving circuit and/or a transmitting circuit, or a communication interface, etc., the processing unit 701
  • the transceiver unit 702 can be controlled to cause the transceiver unit to perform corresponding operations.
  • the processing unit 701 may include one or more processing subunits, which are not limited herein.
  • FIG. 8 is a schematic diagram showing a possible logical structure of a location management function network element involved in the foregoing embodiment provided by an embodiment of the present application.
  • the location management function network element includes a processor 802.
  • the processor 802 is configured to control and manage the action of the location management function network element.
  • the processor 802 is configured to support the location management function network element to perform the location management function. The operation of determining the access method of the positioning method and the positioning parameter.
  • the location management function network element may further include a memory 801, a transceiver 803, wherein the processor 802, the transceiver 803, and the memory 801 may be connected to each other (e.g., connected to each other through a bus).
  • the memory 801 is configured to store code and data of the location management function network element.
  • the transceiver 803 is configured to support the operation of transmitting and receiving information performed by the location management function network element in the method embodiment.
  • the memory 801 can be a memory in the processor 802 or a memory independent of the processor 802.
  • the transceiver 803 can also be a communication interface of the location management function network element or a communication interface of the processor 802.
  • the processor 802 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
  • FIG. 9 is a schematic diagram showing a possible structure of the mobility management network element involved in the foregoing embodiment.
  • the mobility management network element includes: a transceiver unit 903 and processing. Unit 902.
  • the transceiver unit 903 is configured to support the step of the mobile management network element to perform receiving and transmitting information in the method embodiment
  • the processing unit 902 is configured to support the mobility management network element to execute the mobility management network element.
  • the processing unit 903 may include one or more processing subunits, which are not limited herein.
  • the transceiver unit 903 may include a receiver and/or a transmitter, or include a receiving circuit and/or a transmitting circuit, or a communication interface or the like.
  • the processing unit 902 can be a processor or a processing circuit or the like.
  • FIG. 10 is a schematic diagram showing a possible logical structure of a mobility management network element involved in the foregoing embodiment provided by an embodiment of the present application.
  • the mobility management network element includes a processor 1002.
  • the processor 1002 is configured to control and manage the actions of the mobility management network element in the embodiment.
  • the mobility management network element may further include a memory 1001 and a transceiver 1003.
  • the processor 1002, the transceiver 1003, and the memory 1001 may be connected to each other (for example, connected to each other through a bus).
  • the memory 1001 is configured to store program codes and data of the mobility management network element, and the transceiver 1003 is configured to support the operation of transmitting and receiving information performed by the mobility management network element in the method embodiment.
  • the memory 1001 may be a memory in the processor 1002 or a memory independent of the processor 1002.
  • the transceiver 1003 can also be a communication interface of the location management function network element or a communication interface of the processor 1002.
  • the processor 1002 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
  • a readable storage medium wherein the readable storage medium stores computer execution instructions, when a device (which may be a single chip microcomputer, a chip, etc.) or the processor can invoke the readable storage medium
  • the step of storing the mobility management network element and the location management function network element in the positioning method provided in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 6 is stored in the computer execution instruction.
  • the aforementioned readable storage medium may include various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.
  • a computer program product comprising computer executable instructions stored in a computer readable storage medium; at least one processor of the device Reading the storage medium to read the computer to execute the instruction, and the at least one processor executing the computer to execute the instruction, so that the device implements the mobility management network element and the location management function network element in the measurement method provided in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 6 step.
  • Yet another aspect of the present application is directed to an apparatus that includes code in the processor running memory such that the apparatus performs the various methods described above.
  • the memory stores code and data.
  • the memory is located in the device, the memory being coupled to the processor.
  • the memory can also be located outside of the device.
  • the names of request messages, response messages, and other various messages are employed for convenience of description. However, these messages are merely illustrative of the content to be carried or the functions to be carried.
  • the specific name of the message is not limited to the present application, for example, it may be a first message, a second message, a third message, or the like. These messages can be specific messages and can be some of the fields in the message. These messages can also represent various service operations.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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Abstract

本申请实施例提供一种定位方法及相关设备，该方法包括：位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型；所述位置管理功能网元向移动性管理网元发送所述定位方法和指示信息，所述指示信息用于指示所述移动性管理网元采用所述获取定位参数的接入类型获取所述定位参数。采用本申请实施例，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。

Description

一种定位方法及相关设备 技术领域
本申请涉及通信技术领域，尤其涉及一种定位方法及相关设备。
背景技术
第五代(5th-Generation，5G)移动通信技术标准中定义了适用于不同场景的定位流程，包括网络触发的定位请求流程(Network Induced Location Request，NI-LR)、移动终止定位请求流程(Mobile Terminating Location Request，MT-LR)、移动始发定位请求流程(Mobile Originating Location Request，MO-LR)等。
上述定位流程目前主要是为5G的第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)架构设计的。随着5G标准的推进，现已提出了非3GPP(non-3GPP，N3GPP)接入架构。然而，在引入非3GPP接入架构后，现有技术并没有给出如何进行定位。
发明内容
本申请实施例公开了一种定位方法及相关设备，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
第一方面，本申请实施例提供一种定位方法，该方法包括：位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型；所述位置管理功能网元向移动性管理网元发送所述定位方法和指示信息，所述指示信息用于指示所述移动性管理网元采用所述获取定位参数的接入类型获取所述定位参数。
在该方法中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
在一种可选的方案中，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型，包括：所述位置管理功能网元根据所述终端设备的接入类型和所述终端设备的连接状态确定所述终端设备的定位方法以及获取定位参数的接入类型。可以看出，通过连接状态可以滤除其中无法被相应接入网设备实时的定位方法。
在又一种可选的方案中，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：所述位置管理功能网元向所述移动性管理网元发送请求消息，所述请求消息用于请求所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
在又一种可选的方案中，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：所述位置管理功能网元接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
在又一种可选的方案中，所述指示信息包括第一指示信息和第二指示信息，所述第一 指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
在又一种可选的方案中，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：所述位置管理功能网元接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型。
第二方面，本申请实施例提供一种定位方法，该方法包括：移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息，所述指示信息用于指示获取定位参数的接入类型；所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数。
在该方法中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
在一种可选的方案中，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：所述移动性管理网元接收所述位置管理功能网元发送的请求消息；所述移动性管理网元根据所述请求消息向所述位置管理功能网元发送所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
在又一种可选的方案中，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：所述移动性管理网元向所述位置管理功能网元接收发送定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
在又一种可选的方案中，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数；所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数，包括：所述移动性管理网元根据所述定位方法、所述第一指示信息和所述第二指示信息获取所述终端设备的定位参数。可以看出，通过连接状态可以滤除其中无法被相应接入网设备实时的定位方法。
在又一种可选的方案中，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：所述移动性管理网元向所述位置管理功能网元发送定位请求消息，所述定位请求消息包含所述终端设备的接入类型。
在又一种可选的方案中，所述指示信息指示了所述第一接入类型和所述第二接入类型；所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数，包括：所述移动性管理网元从所述第一接入类型的第一接入点和所述第二接入类型的第二接入点中选择一个接入点来获取所述终端设备的定位参数。
第三方面，本申请实施例提供一种位置管理功能网元，该位置管理功能网元包括收发单元和处理单元，其中：所述处理单元，用于根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型；所述收发单元，用于向移动性管理网元发送所述定位方法和指示信息，所述指示信息用于指示所述移动性管理网元采用所述获取定位参 数的接入类型获取所述定位参数。
在位置管理功能网元中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
在一种可选的方案中，所述处理单元，用于根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型，具体为：所述处理单元，用于根据所述终端设备的接入类型和所述终端设备的连接状态确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型。可以看出，通过连接状态可以滤除其中无法被相应接入网设备实时的定位方法。
在又一种可选的方案中，所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，向所述移动性管理网元发送请求消息，所述请求消息用于请求所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
在又一种可选的方案中，所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
在又一种可选的方案中，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
在又一种可选的方案中，所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型。
第四方面，本申请实施例提供一种移动性管理网元，包括收发单元和处理单元，其中：
所述收发单元，用于接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息，所述指示信息用于指示获取定位参数的接入类型；所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数。
在该移动性管理网元中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
在一种可选的方案中，所述收发单元，还用于在接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息之前，接收所述位置管理功能网元发送的请求消息；所述收发单元，还用于根据所述请求消息向所述位置管理功能网元发送所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
在又一种可选的方案中，所述收发单元，还用于在接收位置管理功能网元发送的终端 设备的定位移动性管理网元和指示信息之前，向所述位置管理功能网元接收发送定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
在又一种可选的方案中，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数；所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数，具体为：所述处理单元，用于根据所述定位移动性管理网元、所述第一指示信息和所述第二指示信息获取所述终端设备的定位参数。可以看出，通过连接状态可以滤除其中无法被相应接入网设备实时的定位方法。
在又一种可选的方案中，所述收发单元，还用于在接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息之前，向所述位置管理功能网元发送定位请求消息，所述定位请求消息包含所述终端设备的接入类型。
在又一种可选的方案中，所述指示信息指示了所述第一接入类型和所述第二接入类型；
所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数，具体为：所述处理单元，用于从所述第一接入类型的第一接入点和所述第二接入类型的第二接入点中选择一个接入点来执行所述定位移动性管理网元，以获取所述终端设备的定位参数。
结合上述任一方面或者任一方面的可选的方案，在又一种可选的方案中，所述位置信息包括所述终端设备驻留小区的小区标识、所述终端设备的互联网协议地址IP、所述终端设备的源用户数据报协议UDP端口号和所述终端设备连接的非第三代合作伙伴计划3GPP互连功能网元的网元标识中至少一项。
结合上述任一方面或者任一方面的可选的方案，在又一种可选的方案中，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
结合上述任一方面或者任一方面的可选的方案，在又一种可选的方案中，所述接入类型包括采用第三代合作伙伴计划3GPP技术接入和/或非采用第三代合作伙伴计划N3GPP技术接入。
结合上述任一方面或者任一方面的可选的方案，在又一种可选的方案中，所述连接状态包括所述终端设备与第一接入类型的第一接入点之间的第一链路的状态，以及所述终端设备与第二接入类型的第二接入点之间的第二链路的状态。
第五方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质中存储有程序指令，当所述程序指令在处理器上运行时，实现第一方面或者第二方面所描述的方法。
第六方面，本申请提供一种程序产品，当所述程序产品在处理器上运行时，实现第一方面或者第二方面所描述的方法。
在本申请实施例中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类 型。
附图说明
以下对本申请实施例用到的附图进行介绍。
图1是本申请实施例提供的一种通信系统的架构示意图；
图2是本申请实施例提供的又一种通信系统的架构示意图；
图3是本申请实施例提供的一种定位方法的流程示意图；
图4是本申请实施例提供的又一种定位方法的流程示意图；
图5是本申请实施例提供的又一种定位方法的流程示意图；
图6是本申请实施例提供的又一种定位方法的流程示意图；
图7是本申请实施例提供的一种位置管理功能网元的结构示意图；
图8是本申请实施例提供的又一种位置管理功能网元的结构示意图；
图9是本申请实施例提供的一种移动性管理网元的结构示意图；
图10是本申请实施例提供的又一种移动性管理网元的结构示意图。
具体实施方式
下面结合本申请实施例中的附图对本申请实施例进行描述。
请参见图1，图1是本申请实施例提供的一种无线通信系统的架构示意图，该无线通信系统包括终端设备、下一代无线接入节点NGRAN、非3GPP接入网设备、N3IWF、AMF、LMF、SMF、UPF，还可能包括其他的网元但此处并未示出；另外，N1、N2、N3、N4、N6、N11、Y1、Y2均用于表示不同的消息类型；下面对上面列举的各个网元进行介绍。
终端设备：可为用户设备(user equipment，UE)、手持终端、笔记本电脑、用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication，MTC)终端或是其他可以接入网络的设备。
下一代无线接入节点(Next Generation Radio Access Node，NGRAN)：也属于接入网设备，主要负责空口侧的无线资源管理、服务质量(quality of service，QoS)管理、数据压缩和加密等功能。所述接入网设备可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如，在第五代(5th generation，5G)系统中，称为gNB；在LTE系统中，称为演进的节点B(evolved NodeB，eNB或者eNodeB)；在第三代(3rd generation，3G)系统中，称为节点B(Node B)等。
接入和移动性管理功能(access and mobility management function，AMF)网元：属于核心网网元，主要负责信令处理部分，例如：接入控制、移动性管理、附着与去附着以及网关选择等功能。AMF网元为终端设备中的会话提供服务的情况下，会为该会话提供 控制面的存储资源，以存储会话标识、与会话标识关联的SMF网元标识等。
非3GPP接入网(non-3GPP Access Network)设备：该网元允许终端设备和3GPP核心网之间采用非3GPP技术互连互通，其中，非3GPP技术例如：无线保真(WirelessFidelity，Wi-Fi)、全球微波互联接入(Worldwide Interoperability for Microwave Access，WiMAX)网络等。该非3GPP接入网设备可以是不可信非3GPP接入网设备。相对于可信的非3GPP接入网设备可直接接入3GPP核心网，该网元需要通过安全网关建立的安全隧道来与3GPP核心网互连互通，安全网关例如：演进型分组数据网关(Evolved Packet Data Gateway，ePDG)或非3GPP互通功能(Non-3GPP InterWorking Function,N3IWF)网元。
非3GPP互通功能(Non-3GPP InterWorking Function,N3IWF)网元：该网元为不可信的非3GPP接入网设备与3GPP核心网之间的安全网关。
位置管理功能(Location Management Function，LMF)网元：该网元用于提供根据定位精度要求、时延要求等选择相应的定位方法、以及选择相应的通信协议来完成定位所需信息的交互。该LMF还用于为定位服务提供所需的其他信息，或者定位策略。
会话管理功能(Session Management Function，SMF)网元：负责用户面网元选择，用户面网元重定向，因特网协议(internet protocol，IP)地址分配，承载的建立、修改和释放以及QoS控制。
用户面功能(User Plane Function，UPF)网元：负责终端设备中用户数据的转发和接收。可以从数据网络接收用户数据，通过接入网设备传输给终端设备；UPF网元还可以通过接入网设备从终端设备接收用户数据，转发到数据网络。UPF网元中为终端设备提供服务的传输资源和调度功能由SMF网元管理控制的。
可以理解的是，在图1所示的通信系统中，各网元的功能以及接口仅为示例性的，各个网元在应用于本申请的实施例中时，并非全部功能都是必需的。核心网的全部或者部分网元可以是物理上的实体网元，也可以是虚拟化的网元，在此不做限定。
在本申请的实施例中，“/”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。例如，A/B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在本申请的描述中，“多个”是指两个或多于两个。
在本申请的实施例中，某一网元(例如：A网元)获取来自另一网元(例如：B网元)的信息，可以指A网元直接从B网元接收信息，也可以指A网元经其他网元(例如：C网元)从B网元接收信息。当A网元经C网元从B网元接收信息时，C网元可以对信息进行透传，也可以将信息进行处理，例如：将信息携带在不同的消息中进行传输或者对信息进行筛选，只发送筛选后的信息给A网元。类似的，在本申请的各实施例中，A网元向B网元发送信息，可以指A网元直接向B网元发送信息，也可以指A网元经其他网元(如：C网元)向B网元发送信息。
本申请重点关注定位服务中的信息交互流程，该信息交互流程主要涉及网元包括LMF201、AMF202、NGRAN203、N3IWF204、终端设备205和服务调用设备206，相应的架构如图2所示(虚线表示需要其他节点中继的链路，实线表示不需要其他节点中转的链路)，后续的定位方法流程将重点围绕图2所示架构中的网元来展开描述。
请参见图3，图3是本申请实施例提供的一种定位方法，该方法可以应用于网络触发 的定位请求流程NI-LR、移动终止定位请求流程MT-LR、移动始发定位请求流程MO-LR等定位场景中，该方法包括但不限于如下步骤：
步骤S301：移动性管理网元AMF将所述定位请求消息发送给位置管理网元。
具体地，AMF接收服务调用设备发送(直接或者间接发送)的针对终端设备的定位请求消息，该定位请求消息中包含定位要求，例如，时延要求、精度要求，等等。该AMF将该服务调用设备的定位需求消息转发给LMF，以便LMF以从众多的定位方法中选择一个或者一些能够满足该定位需求的定位方法来。目前定位方法包括但不限于：网络辅助的全球卫星导航系统(Global Navigation Satellite System，GNSS)方法、下行定位、增强的小区标识(enhanced Cell ID,eCID)定位、上行定位、气压传感器定位、无线局域网(Wireless Local Area Networks，WLAN定位)、蓝牙定位和地面信标系统定位方法等。另外，该服务调用设备可以为网络暴露功能(NEF，Network Exposure Function)网元、定位服务器等设备，也有可能该AMF自己就是服务调用设备，若该AMF为服务调用设备，那么该步骤S301中AMF就不需要接收其他设备发送的定位请求消息了。
步骤S302：位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型。
具体地，该位置管理网元在确定定位方法时不仅会考虑精度、时延等要求，还会考虑终端设备当前的接入类型，即在其他因素(精度、时延等)相同的情况下，若终端设备的接入类型不同则可能导致位置管理功能网元LMF确定出的终端设备的定位方法不同。可选的，该终端设备的接入类型至少存在如下三种可能：1、终端设备通过3GPP技术接入；2、终端设备通过非3GPP技术接入；3、终端设备通过3GPP技术接入和通过非3GPP技术接入。
本申请还需要确定获取定位参数的所需的接入类型，以便后续基于该接入类型获取对终端设备定位所需的定位参数。例如，如果下行定位方法需要基于3GPP接入这一接入类型来实施以获得定位参数，那么获取定位参数的接入类型需要为3GPP接入；再如，WLAN定位方法可以基于3GPP接入和非3GPP接入这两个接入类型来实施以获得定位参数，那么获取定位参数的类型可以为3GPP接入和(或)非3GPP接入。另外，该定位参数可以包括终端设备接入小区的小区标识(Cell ID)，终端设备接入的N3IWF的标识，终端设备的IP地址，与终端设备相关的WLAN信息，终端设备的经纬度信息，终端设备的无线信号强度和传播时延等中的至少一项。
需要说明的是，位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型，具体包括但限于如下两种情况：
情况一，位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型，该位置管理网元确定定位方法的过程没有使用该终端的连接状态，所述终端设备的连接状态包括所述终端设备与第一接入类型(例如，3GPP接入类型)的第一接入点(例如，NGRAN)之间的第一链路的状态，以及所述终端设备与第二接入类型(例如，非3GPP接入类型)的第二接入点(例如，N3IWF)之间的第二链路的状态。其中，任意一个链路的状态可以为连接态，也可以为空闲态。
在这种情况下，终端设备用到的终端设备的接入类型可以通过如下方式获取：
方式A：所述位置管理功能网元向所述移动性管理网元发送请求消息，所述请求消息 用于请求所述终端设备的接入类型信息，相应地，该移动性管理网元根据该请求消息将获取的终端设备的接入类型信息反馈给该位置管理网元。可选的，该位置管理功能网元还可以通过发送请求消息的方式请求该终端的位置信息，该位置信息包括所述终端设备驻留小区的小区标识、所述终端设备的互联网协议地址IP、所述终端设备的源用户数据报协议UDP端口号和所述终端设备连接的非3GPP互连功能网元的网元标识中至少一项。下面以该请求消息为订阅请求消息为例进行举例说明：所述位置管理功能网元(如通过Namf_EventExposure_Subscribe接口)向所述移动性管理网元发送订阅请求消息，所述订阅请求消息用于请求所述移动性管理网元执行如下操作：
操作1，若终端设备的位置信息发生改变，则向所述位置管理网元反馈所述位置信息，反馈的位置信息包括发生改变之后的位置信息，还可以包括发生改变之前的位置信息。需要说明的是，该位置信息可以用于估计终端设备的大致位置，在精度要求不高的时候可以直接将该位置信息标识的位置座位该终端设备的位置。该操作1为可选操作。
操作2，若所述终端设备的接入类型发生改变，则向所述位置管理网元反馈所述终端设备的接入类型；反馈的接入类型包括发生改变之后的接入类型，还可以包括为发生改变之前的接入类型。
在一种可能的实现方式中，该移动性管理网元AMF在接收到订阅请求消息之后立即向位置管理功能网元LMF反馈位置信息、接入类型等信息。
方式B：移动性管理网元在(如通过Namf_Location_DetermineLocation服务化接口)向位置管理功能网元发送用于请求终端舍设备的位置的定位请求消息时，在该定位请求消息中主动携带该终端设备当前的接入类型信息，这样该位置管理功能网元就可以根据该定位请求消息获得该终端设备当前的接入类型。
情况二，位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型，该位置管理网元确定定位方法的过程使用了连接状态。举例来说，假若先根据接入类型(还有定位精度、定位时延等)确定出了一些定位方法，且这些定位方法中有些仅适用于3GPP接入，有一些仅适用于非3GPP接入，还有一些既适用于3GPP接入又适用于非3GPP接入，而此时非3GPP接入类型的连接状态为空闲态，那么该位置管理网元可以从该一些定位方法中滤除仅适用于非3GPP的定位方法，滤除后剩余的定位方法即为该位置管理网元根据该终端设备的接入类型和该终端设备的连接状态共同确定出的终端设备的定位方法。
在这种情况下，终端设备用到的终端设备的接入类型和连接状态可以通过如下方式获取：
方式A：所述位置管理功能网元向所述移动性管理网元发送请求消息，所述请求消息用于请求所述终端设备的接入类型信息和连接状态，相应地，该移动性管理网元根据该请求消息将获取的终端设备的接入类型信息和连接状态信息反馈给该位置管理网元。可选的，该位置管理功能网元还可以通过发送请求消息的方式请求该终端的位置信息。下面以该请求消息为订阅请求消息为例进行举例说明：所述位置管理功能网元(如通过Namf_EventExposure_Subscribe接口)向所述移动性管理网元发送订阅请求消息，所述订阅请求消息用于请求所述移动性管理网元执行如下操作：
操作1，若终端设备的位置信息发生改变，则向所述位置管理网元反馈所述位置信息，反馈的位置信息包括发生改变之后的位置信息，还可以包括发生改变之前的位置信息。该操作1为可选操作。
操作2，若所述终端设备的接入类型发生改变，则向所述位置管理网元反馈所述终端设备的接入类型；反馈的接入类型包括发生改变之后的接入类型，还可以包括为发生改变之前的接入类型。
操作3，若终端设备的连接状态发生改变，则向所述位置管理网元反馈所述连接状态，反馈的连接状态包括改变之后的连接状态，还可以包括改变之前的连接状态。
在一种可能的实现方式中，该移动性管理网元AMF在接收到订阅请求消息之后立即向位置管理功能网元LMF反馈位置信息、接入类型、连接状态等信息。
方式B：移动性管理网元在(如通过Namf_Location_DetermineLocation服务化接口)向位置管理功能网元发送用于请求终端舍设备的位置的定位请求消息时，在该定位请求消息中主动携带该终端设备当前的接入类型信息和连接状态信息，这样该位置管理功能网元就可以根据该定位请求消息获得该终端设备当前的接入类型和该终端设备的连接状态；或者该定位请求消息中主动携带该终端设备当前的接入类型信息，这样该位置管理功能网元就可以根据该定位请求消息获得该终端设备当前的接入类型。该位置管理网元通过其他方式获取该终端设备的连接状态。
步骤S303：所述位置管理功能网元向移动性管理网元发送所述定位方法和指示信息。
步骤S304：所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息。
步骤S305：所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数。
具体地，在上述情况一和情况二下该指示信息具体指示的内容存在差异，下面分别说明。
在情况一的前提下，所述指示信息用于指示所述移动性管理网元采用所述获取定位参数的接入类型获取所述定位参数。该移动性管理网元根据该定位参数的接入类型来实施位置管理网元发送的定位方法，从而获得该定位参数。另外，位置管理功能网元还向移动性管理网元发送N1或者N2类型信息，用于指示将定位方法发送给终端设备还是接入节点(例如，3GPP接入类型的接入点，或者非3GPP接入类型的接入点)，以告知通过哪些节点获取定位参数。
在另一种可能的实现方式中，该指示信息还携带了N1或者N2类型信息，用于指示将定位方法发送给UE还是接入节点(例如，3GPP接入类型的接入点，或者非3GPP接入类型的接入点)，以告知通过哪些节点获取定位参数。例如：N1类型信息用于指示将定位方法发送给终端设备以通过终端设备获取定位参数，N2类型信息用于指示将定位方法发送给接入节点以通过接入节点获取定位参数。
在另一种可能的实现方式中，指示信息包括在该N1或者N2类型信息中。
在情况二的前提下，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。在一种可能的实现方式中，该指示信息包括第一 指示信息和第二指示信息，第一指示信息标记了以上确定出来的定位参数的接入类型，第二指示信息指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数；相应地，该移动性管理获知该指示信息指示的内容之后，要先确定该终端设备的连接状态，然后根据该连接状态对该位置管理网元发送的一些定位方法进行过滤，例如，假若这一些定位方法中有些仅适用于3GPP接入技术，有一些仅适用于非3GPP接入技术，还有一些既适用于3GPP接入技术又适用于非3GPP接入技术，而此时非3GPP接入类型的连接状态为空闲态，那么该位置管理网元可以从该一些定位方法中滤除仅适用于非3GPP的定位方法，然后使用滤除后剩余的定位方法来获取定位参数，具体是基于该剩余的定位方法所适用的接入类型来实施该剩余的定位方法，从而获得定位参数。
在另一种可能的实现方式中，该指示信息还携带了N1或者N2类型信息，用于指示将定位方法发送给UE还是接入节点(例如，3GPP接入类型的接入点，或者非3GPP接入类型的接入点)，以告知通过哪些节点获取定位参数。例如：N1类型信息用于指示将定位方法发送给终端设备以通过终端设备获取定位参数，N2类型信息用于指示将定位方法发送给接入节点以通过接入节点获取定位参数。
在另一种可能的实现方式中，指示信息包括在该N1或者N2类型信息中。
在一种可能的实现方式中，如果根据接入类型和连接状态确定出的定位方法有多种，那么该移动性管理网元可以从该多种定位方法中选择一部分定位方法作为最终用来获取定位参数的定位方法。可能该一部分定位方法中有一些定位方法需要通过3GPP接入类型来实施，另一些定位方法需要通过非3GPP接入类型来实施；也可能该一部分定位方法都需要通过3GPP接入类型来实施；也可能该一部分定位方法都需要通过非3GPP接入类型来实施。可选的，上述指示信息指示了第一接入类型和第二接入类型，那么所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数，可以具体为：所述移动性管理网元从该第一接入类型和该第二接入类型中选择一个接入类型来实施定位方法，相当于从所述第一接入类型的第一接入点和所述第二接入类型的第二接入点中选择一个接入点来执行所述定位方法。
对于需要通过3GPP接入类型来实施的定位方法，AMF将该定位方法发送给3GPP接入网设备NGRAN，以便NGRAN使用该定位方法来获取定位参数。在一种可能的实现方式中，NGRAN可以向终端设备发送消息以使该终端设备获取定位参数并反馈给该NGRAN；之后NGRAN将定位参数反馈给AMF，以由AMF转发或者经处理后转发给LMF。
对于需要通过非3GPP接入类型来实施的定位方法，AMF将该定位方法发送给非3GPP接入中的安全网关N3IWF，以便N3IWF使用该定位方法来获取定位参数；可选的，N3IWF可以向终端设备发送消息以使该终端设备获取定位参数并反馈给该N3IWF；之后N3IWF将定位参数反馈给AMF，以由AMF转发或者经处理后转发给LMF。
最后LMF根据定位参数确定终端设备的位置，并将确定出的位置发送给AMF，AMF再将该位置反馈给服务调用设备(即终端设备的位置的请求者)。
在本申请实施例中，如果位置管理功能网元LMF根据精度、时延等要求确定出的定位方法适用的接入类型的接入网设备与终端设备之间的链路为空闲态，那么该LMF可向AMF反馈错误提示消息以通知没有适用的定位方法，或者该位置管理网元根据其他信息重新确 定出一个定位方法，要保证重新确定出的定位方法适用的接入类型与终端设备之间的链路为连接态。可以看出，通过连接状态可以滤除其中无法被相应接入网设备实施的定位方法。
在图3所描述的方法中，终端设备当前的接入类型存在多种可能性，不同的定位方法适用的接入类型也存在差异，在这种情况下该位置管理功能网元LMF在确定定位方法时根据终端设备当前的接入类型，能够避免最终确定出的定位方法不适用于终端设备当前的接入类型。
图3所示实施例描述了多种可能的实现方案，下面结合图4-图6针对其中几种实现方案的流程做更完整的描述以方便理解，由于涉及的重要步骤的执行原理在图3所示实施例中已做了详细说明，因此此处不再对相应步骤的原理做过多解释。
请参见图4，是本申请实施例提供的一种定位方法，该定位方法主要体现由LMF向AMF发送订阅请求消息，以请求确定定位方法所需的接入类型、连接状态、位置信息等；该定位方法具体包括如下步骤：
步骤401：LMF向AMF发送订阅请求消息。
步骤402：AMF按照订阅规则向LMF发送位置信息、接入类型、连接状态等信息。
步骤403：AMF向LMF发送针对终端设备的定位请求消息。
步骤404：LMF根据终端设备的接入类型和连接状态选择定位方法，并确定该定位方法适用的接入类型。
步骤405：LMF将确定出的定位方法以及该定位方法适用的接入类型发送给AMF。
步骤406：AMF根据该定位方法适用的接入类型来实施该定位方法。
步骤407：若确定出的定位方法适用于3GPP接入类型，则AMF采用3GPP接入类型来实施该定位方法，以获得定位参数。
步骤408：若确定出的定位方法适用于非3GPP接入类型，则AMF采用非3GPP接入类型来实施该定位方法，以获得定位参数。
步骤409：AMF将获取的定位参数发送给LMF。
步骤410：LMF接收AMF发送的定位参数，并根据该定位参数确定终端设备的位置。
步骤411：LMF将终端设备的位置发送给AMF，以便AMF将终端设备的位置发送给服务调用设备。
请参见图5，是本申请实施例提供的一种定位方法，该定位方法主要体现AMF向LMF发送定位请求消息时主动携带确定定位方法所需的接入类型、连接状态等；该定位方法具体包括如下步骤：
步骤501：AMF向LMF发送针对终端设备的定位请求消息，该定位请求消息中携带接入类型、连接状态等信息。
步骤502：LMF根据终端设备的接入类型和连接状态选择定位方法，并确定该定位方法适用的接入类型。
步骤503：LMF将确定出的定位方法以及该定位方法适用的接入类型发送给AMF。
步骤504：AMF根据该定位方法适用的接入类型来实施该定位方法。
步骤505：若确定出的定位方法适用于3GPP接入类型，则AMF采用3GPP接入类型来实施该定位方法，以获得定位参数。
步骤506：若确定出的定位方法适用于非3GPP接入类型，则AMF采用非3GPP接入类型来实施该定位方法，以获得定位参数。
步骤507：AMF将获取的定位参数发送给LMF。
步骤508：LMF接收AMF发送的定位参数，并根据该定位参数确定终端设备的位置。
步骤509：LMF将终端设备的位置发送给AMF，以便AMF将终端设备的位置发送给服务调用设备。
请参见图6，是本申请实施例提供的一种定位方法，该定位方法主要体现先由LMF根据接入类型确定大致的定位方法，然后由AMF结合连接状态对确定出的该定位方法进行筛选，从而确定出最终的定位方法，该定位方法具体包括如下步骤：
步骤601：AMF向LMF发送针对终端设备的定位请求消息，定位请求消息中携带接入类型。
步骤602：LMF根据终端设备的接入类型选择定位方法，并确定该定位方法适用的接入类型。
步骤603：LMF将确定出的定位方法以及该定位方法适用的接入类型发送给AMF。
步骤604：AMF根据连接状态从接收的定位方法中选择部分定位方法，并确定选择出的定位方法适用的接入类型。
步骤605：若确定出的定位方法适用于3GPP接入类型，则AMF采用3GPP接入类型来实施该定位方法，以获得定位参数。
步骤606：若确定出的定位方法适用于非3GPP接入类型，则AMF采用非3GPP接入类型来实施该定位方法，以获得定位参数。
步骤607：AMF将获取的定位参数发送给LMF。
步骤608：LMF接收AMF发送的定位参数，并根据该定位参数确定终端设备的位置。
步骤609：LMF将终端设备的位置发送给AMF，以便AMF将终端设备的位置发送给服务调用设备。
上述详细阐述了本申请实施例的方法，下面提供了本申请实施例的装置。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如位置管理功能网元和移动性管理网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的网元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对位置管理功能网元和移动性管理网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功 能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图7示出了上述实施例中所涉及的位置管理功能网元的一种可能的结构示意图，位置管理功能网元包括：处理单元701和收发单元702。处理单元701用于支持位置管理功能网元执行位置管理功能网元在所在方法实施例中执行的除发送和接收功能以外的其他功能等，收发单元702用于支持位置管理功能网元执行位置管理功能网元在所在方法实施例中接收信息和发送信息的步骤。
在硬件实现上，上述处理单元701可以为处理器或者处理电路等；收发单元702可以包括接收器和/或发射器，或者包括接收电路和/或发射电路，或者通信接口等，该处理单元701可以对收发单元702进行控制，以使收发单元执行相应操作。该处理单元701可以包括一个或者多个处理子单元，在此不做限定。
图8所示，为本申请的实施例提供的上述实施例中所涉及的位置管理功能网元的一种可能的逻辑结构示意图。位置管理功能网元包括：处理器802。在本申请的实施例中，处理器802用于对该位置管理功能网元的动作进行控制管理，例如，处理器802用于支持位置管理功能网元执行位置管理功能网元在所在方法实施例中确定定位方法和定位参数的接入类型的操作。位置管理功能网元还可以包括存储器801，收发器803，其中，处理器802、收发器803以及存储器801可以相互连接(例如，通过总线相互连接)。其中，该存储器801用于存储位置管理功能网元的代码和数据。收发器803用于支持该位置管理功能网元在所在方法实施例中执行的发送信息和接收信息的操作。
该存储器801可以是处理器802中的存储器，也可以是于处理器802相互独立的存储器。
该收发器803也可以是该位置管理功能网元的通信接口，或者该处理器802的通信接口。
其中，处理器802可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。
在采用对应各个功能划分各个功能模块的情况下，图9示出了上述实施例中所涉及的移动性管理网元的一种可能的结构示意图，移动性管理网元包括：收发单元903和处理单元902。其中，收发单元903用于支持移动性管理网元在所在的方法实施例中执行接收信息和发送信息的步骤；处理单元902，用于支持移动性管理网元执行移动性管理网元在所在方法实施例中执行的除发送和接收功能以外的其他功能等。该处理单元903可以包括一个或者多个处理子单元，在此不做限定。
在硬件实现上，上述收发单元903可以包括接收器和/或发射器，或者包括接收电路和/或发射电路，或者通信接口等。处理单元902，可以为处理器或者处理电路等。
图10所示，为本申请的实施例提供的上述实施例中所涉及的移动性管理网元的一种可 能的逻辑结构示意图。移动性管理网元包括：处理器1002。在本申请的实施例中，处理器1002用于对实施例中移动性管理网元的动作进行控制管理。可选的，移动性管理网元还可以包括存储器1001和收发器1003，处理器1002、收发器1003以及存储器1001可以相互连接(例如，通过总线相互连接)。其中，存储器1001用于存储移动性管理网元的程序代码和数据，收发器1003用于支持该移动性管理网元在所在方法实施例中执行的发送信息和接收信息的操作。
该存储器1001可以是处理器1002中的存储器，也可以是于处理器1002相互独立的存储器。
该收发器1003也可以是该位置管理功能网元的通信接口，或者该处理器1002的通信接口。
其中，处理器1002可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。
在本申请的另一实施例中，还提供一种可读存储介质，可读存储介质中存储有计算机执行指令，当一个设备(可以是单片机，芯片等)或者处理器可以调用可读存储介质中存储有计算机执行指令来执行图3或者图4或者图5或者图6所提供的定位方法中移动性管理网元、位置管理功能网元的步骤。前述的可读存储介质可以包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
在本申请的另一实施例中，还提供一种计算机程序产品，该计算机程序产品包括计算机执行指令，该计算机执行指令存储在计算机可读存储介质中；设备的至少一个处理器可从计算机可读存储介质读取该计算机执行指令，至少一个处理器执行该计算机执行指令使得设备实施图3或者图4或者图5或者图6所提供的测量方法中移动性管理网元、位置管理功能网元的步骤。
本申请的又一方面提了一种设备，所述设备包括所述处理器运行存储器中的代码使得所述设备执行前述的各种方法。该存储器中存储代码和数据。该存储器位于所述设备中，该所述存储器所述处理器耦合。该存储器也可以位于所述设备之外。
在本申请的各实施例中，为了方便理解，进行了多种举例说明。然而，这些例子仅仅是一些举例，并不意味着是实现本申请的最佳实现方式。
在本申请的各实施例中，为了方便的描述，采用了请求消息，响应消息以及其他各种消息的名称。然而，这些消息仅仅是以举例方式说明需要携带的内容或者实现的功能，消息的具体名称并不对本申请的做出限定，例如：还可以是第一消息，第二消息，第三消息等。这些消息可以是具体的一些消息，可以是消息中的某些字段。这些消息还可以代表各种服务化操作。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部 分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
最后应说明的是：以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种定位方法，其特征在于，包括：
    位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型；
    所述位置管理功能网元向移动性管理网元发送所述定位方法和指示信息，所述指示信息用于指示所述移动性管理网元采用所述获取定位参数的接入类型获取所述定位参数。
  2. 根据权利要求1所述的方法，其特征在于，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型，包括：
    所述位置管理功能网元根据所述终端设备的接入类型和所述终端设备的连接状态确定所述终端设备的定位方法以及获取定位参数的接入类型。
  3. 根据权利要求1或2所述的方法，其特征在于，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：
    所述位置管理功能网元向所述移动性管理网元发送请求消息，所述请求消息用于请求所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
  4. 根据权利要求1或2所述的方法，其特征在于，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：
    所述位置管理功能网元接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
  5. 根据权利要求1所述的方法，其特征在于，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
  6. 根据权利要求5所述的方法，其特征在于，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
  7. 根据权利要求5或6所述的方法，其特征在于，所述位置管理功能网元根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型之前，还包括：
    所述位置管理功能网元接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型。
  8. 根据权利要求2-7任一项所述的方法，其特征在于，所述连接状态包括所述终端设 备与第一接入类型的第一接入点之间的第一链路的状态，以及所述终端设备与第二接入类型的第二接入点之间的第二链路的状态。
  9. 一种定位方法，其特征在于，包括：
    移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息，所述指示信息用于指示获取定位参数的接入类型；
    所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数。
  10. 根据权利要求9所述的方法，其特征在于，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：
    所述移动性管理网元接收所述位置管理功能网元发送的请求消息；
    所述移动性管理网元根据所述请求消息向所述位置管理功能网元发送所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
  11. 根据权利要求9所述的方法，其特征在于，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：
    所述移动性管理网元向所述位置管理功能网元接收发送定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
  12. 根据权利要求9所述的方法，其特征在于，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
  13. 根据权利要求12所述的方法，其特征在于，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数；
    所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数，包括：
    所述移动性管理网元根据所述定位方法、所述第一指示信息和所述第二指示信息获取所述终端设备的定位参数。
  14. 根据权利要求10或13所述的方法，其特征在于，所述移动性管理网元接收位置管理功能网元发送的终端设备的定位方法和指示信息之前，还包括：
    所述移动性管理网元向所述位置管理功能网元发送定位请求消息，所述定位请求消息包含所述终端设备的接入类型。
  15. 根据权利要求10-14任一项所述的方法，其特征在于，所述连接状态包括所述终端设备与第一接入类型的第一接入点之间的第一链路的状态，以及所述终端设备与第二接 入类型的第二接入点之间的第二链路的状态。
  16. 根据权利要求15所述的方法，其特征在于，所述指示信息指示了所述第一接入类型和所述第二接入类型；所述移动性管理网元根据所述定位方法和指示信息获取所述终端设备的定位参数，包括：
    所述移动性管理网元从所述第一接入类型的第一接入点和所述第二接入类型的第二接入点中选择一个接入点来获取所述终端设备的定位参数。
  17. 一种位置管理功能网元，其特征在于，包括收发单元和处理单元，其中：
    所述处理单元，用于根据终端设备的接入类型确定所述终端设备的定位方法以及获取定位参数的接入类型；
    所述收发单元，用于向移动性管理网元发送所述定位方法和指示信息，所述指示信息用于指示所述移动性管理网元采用所述获取定位参数的接入类型获取所述定位参数。
  18. 根据权利要求17所述的位置管理功能网元，其特征在于，所述处理单元，用于根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型，具体为：
    所述处理单元，用于根据所述终端设备的接入类型和所述终端设备的连接状态确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型。
  19. 根据权利要求17或18所述的位置管理功能网元，其特征在于：
    所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，向所述移动性管理网元发送请求消息，所述请求消息用于请求所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
  20. 根据权利要求17或18所述的位置管理功能网元，其特征在于：
    所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
  21. 根据权利要求17所述的位置管理功能网元，其特征在于，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
  22. 根据权利要求21所述的位置管理功能网元，其特征在于，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所 述定位参数。
  23. 根据权利要求21或22所述的位置管理功能网元，其特征在于：
    所述收发单元，还用于在所述处理单元根据终端设备的接入类型确定所述终端设备的定位位置管理功能网元以及获取定位参数的接入类型之前，接收所述移动性管理网元发送的定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型。
  24. 根据权利要求18-23任一项所述的位置管理功能网元，其特征在于，所述连接状态包括所述终端设备与第一接入类型的第一接入点之间的第一链路的状态，以及所述终端设备与第二接入类型的第二接入点之间的第二链路的状态。
  25. 一种移动性管理网元，其特征在于，包括收发单元和处理单元，其中：
    所述收发单元，用于接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息，所述指示信息用于指示获取定位参数的接入类型；
    所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数。
  26. 根据权利要求25所述的移动性管理网元，其特征在于：
    所述收发单元，还用于在接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息之前，接收所述位置管理功能网元发送的请求消息；
    所述收发单元，还用于根据所述请求消息向所述位置管理功能网元发送所述终端设备的位置信息，所述终端设备的接入类型信息，和所述连接状态信息中的至少一种。
  27. 根据权利要求25所述的移动性管理网元，其特征在于：
    所述收发单元，还用于在接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息之前，向所述位置管理功能网元接收发送定位请求消息，所述定位请求消息包含所述终端设备当前的接入类型和所述连接状态，或者所述定位请求消息包含所述终端设备当前的接入类型。
  28. 根据权利要求25所述的移动性管理网元，其特征在于，所述指示信息具体用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数。
  29. 根据权利要求28所述的移动性管理网元，其特征在于，所述指示信息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述获取定位参数的接入类型，所述第二指示信息用于指示根据所述定位参数的接入类型和所述终端设备的连接状态获取所述定位参数；
    所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数，具体为：
    所述处理单元，用于根据所述定位移动性管理网元、所述第一指示信息和所述第二指示信息获取所述终端设备的定位参数。
  30. 根据权利要求26或29所述的移动性管理网元，其特征在于:
    所述收发单元，还用于在接收位置管理功能网元发送的终端设备的定位移动性管理网元和指示信息之前，向所述位置管理功能网元发送定位请求消息，所述定位请求消息包含所述终端设备的接入类型。
  31. 根据权利要求26-30任一项所述的移动性管理网元，其特征在于，所述连接状态包括所述终端设备与第一接入类型的第一接入点之间的第一链路的状态，以及所述终端设备与第二接入类型的第二接入点之间的第二链路的状态。
  32. 根据权利要求31所述的移动性管理网元，其特征在于，所述指示信息指示了所述第一接入类型和所述第二接入类型；
    所述处理单元，用于根据所述定位移动性管理网元和指示信息获取所述终端设备的定位参数，具体为：
    所述处理单元，用于从所述第一接入类型的第一接入点和所述第二接入类型的第二接入点中选择一个接入点来获取所述终端设备的定位参数。
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