CN117255305A

CN117255305A - Terminal position determining method and device and computer readable storage medium

Info

Publication number: CN117255305A
Application number: CN202210648681.7A
Authority: CN
Inventors: 黄曲芳
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-12-19
Also published as: WO2023237082A1

Abstract

A terminal position determining method and device, computer readable storage medium, the terminal position determining method includes: acquiring first position information reported by a terminal; acquiring second position information issued by a positioning server; and determining whether the first position information is credible or not according to the first position information and the second position information. By adopting the scheme, the first position information reported by the terminal can be verified, so that the fact that the access network equipment maps the terminal to the wrong virtual cell to influence the emergency call flow of the terminal is effectively avoided.

Description

Terminal position determining method and device and computer readable storage medium

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and apparatus for determining a terminal position, and a computer readable storage medium.

Background

In a conventional terrestrial cell, the core network stores the cell in which the terminal is in an IDLE (IDLE) state, and the diameter of the cell is typically only several kilometers or even hundreds of meters. If there is a need for an emergency call, the terminal is first paged in the cell and an emergency call is initiated.

After the satellite cell is adopted for wireless communication, the core network element also needs to initiate an emergency call, so the core network element needs to know the precise geographic position of the terminal so as to initiate the emergency call. The "precise geographical position" precision is the same as the communication scenario of the terrestrial cell, and the diameter is also required to be within several kilometers, whereas the satellite cell diameter is usually several hundred kilometers, even thousands of kilometers. Therefore, if the core network element stores the cell where the terminal is located according to the flow of the ground cell, the required accuracy cannot be achieved.

In the prior art, in order to meet the requirement of a core network element on precision, a terminal acquires own geographic position information through a built-in global navigation satellite system (Global Navigation Satellite System, GNSS) module and reports the geographic position information to access network equipment. The access network equipment maps to a virtual cell according to the geographic position information, and reports the identification of the virtual cell to the core network element.

However, if the geographical location information reported by the terminal is not reliable, the access network device may map the geographical location information of the terminal to the wrong virtual cell, and further cause the core network element to store the wrong virtual cell Identifier (ID), which affects the emergency call flow.

Disclosure of Invention

The technical problem solved by the embodiment of the invention is that the geographic position information reported by the terminal is not credible, so that the access network equipment maps the terminal to the wrong virtual cell, and the emergency call flow of the terminal is influenced.

In order to solve the above technical problems, an embodiment of the present invention provides a method for determining a terminal position, which is applied to an access network device, and the method includes: acquiring first position information reported by the terminal; acquiring second position information issued by a positioning server; and determining whether the first position information is credible or not according to the first position information and the second position information.

Optionally, the obtaining the second location information sent by the positioning server includes: sending a positioning trigger request to a core network element, wherein the positioning trigger request is used for triggering the core network element to request the second position information to the positioning server; and receiving the second position information returned by the core network element.

Optionally, the positioning trigger request is further used for indicating an identification of the terminal.

Optionally, the positioning trigger request is further used for indicating a first period of time, where the first period of time is: and the core network element returns the time range of the second position information.

Optionally, the determining whether the first location information is trusted according to the first location information and the second location information includes: if the error between the first position information and the second position information is smaller than a first threshold and the return time of the second position information is within the first time period, determining that the first position information is credible; and/or if the error between the first position information and the second position information is not smaller than a first threshold, and/or the return time of the second position information is not within the first time period, determining that the first position information is not trusted.

Optionally, the determining whether the first location information is trusted according to the first location information and the second location information includes: and if the error between the first position information and the second position information is smaller than a first threshold, determining that the first position information is credible.

Optionally, if the error between the first location information and the second location information is less than a first threshold, determining that the first location information is trusted includes: if the error between the first position information and the second position information is smaller than the first threshold, sending a position acquisition request to the terminal, wherein the position acquisition request is used for requesting third position information of the terminal; acquiring the third position information, wherein the third position information is used for indicating the position of the terminal; and if the error between the third position information and the second position information is smaller than the first threshold, determining that the first position information is credible.

Optionally, the method for determining the terminal position further includes: and if the error between the third position information and the second position information is not smaller than the first threshold, determining that the first position information is not credible.

Optionally, the determining whether the first location information is trusted according to the first location information and the second location information includes: and if the error between the first position information and the second position information is not smaller than a first threshold, determining that the first position information is not trusted.

Optionally, if the error between the first location information and the second location information is not less than a first threshold, determining that the first location information is not trusted includes: if the error between the first position information and the second position information is not smaller than the first threshold, sending a position acquisition request to the terminal, wherein the position acquisition request is used for requesting third position information of the terminal; the third position information is used for indicating the position of the terminal; acquiring the third position information; and if the error between the third position information and the second position information is not smaller than the first threshold, determining that the first position information is not credible.

Optionally, the method for determining the terminal position further includes: and if the error between the third position information and the second position information is smaller than the first threshold, determining that the first position information is credible.

Optionally, the first threshold is preconfigured; or, the first threshold is determined according to the moving speed of the terminal.

Optionally, the method for determining the terminal position further includes: if the first position information is credible, reporting a virtual cell identifier corresponding to the first position information; or reporting the virtual cell identification corresponding to the second position information.

The embodiment of the invention also provides a device for determining the terminal position, which comprises the following steps: the first acquisition unit is used for acquiring first position information reported by the terminal; the second acquisition unit is used for acquiring second position information issued by the positioning server; and the first determining unit is used for determining whether the first position information is credible or not according to the first position information and the second position information.

The embodiment of the invention also provides another terminal position determining method which is applied to the core network element and comprises the following steps: acquiring first position information of the terminal; acquiring second position information issued by a positioning server; and determining whether the first position information is credible or not according to the first position information and the second position information.

Optionally, the obtaining the second location information sent by the positioning server further includes: sending a positioning request to the positioning server, wherein the positioning request is used for requesting the second position information; and receiving second position information issued by the positioning server.

Optionally, the acquiring the first location information of the terminal includes: and receiving the first position information of the terminal forwarded by the access network equipment.

Optionally, the acquiring the first location information of the terminal includes: obtaining a virtual cell identifier of the terminal reported by access network equipment; and determining the first position information according to the virtual cell identification of the terminal.

Optionally, the method for determining the terminal position further includes: recording the acquisition time of the first position information.

Optionally, the determining whether the first location information is trusted according to the first location information and the second location information includes: if the error between the first position information and the second position information is smaller than a first threshold, and the time difference between the time for acquiring the first position information and the time for acquiring the second position information is smaller than a preset value, determining that the first position information is credible; otherwise, determining that the first location information is not trusted.

Optionally, after determining whether the first location information is authentic, further comprising: if the first position information is determined to be credible, feeding back a result of the credible first position information to access network equipment; and/or, if the first position information is determined to be not trusted, feeding back a result of the first position information being not trusted to the access network equipment.

The embodiment of the invention also provides another device for determining the position of the terminal, which comprises the following steps: a third acquiring unit, configured to acquire first location information of the terminal; a fourth obtaining unit, configured to obtain second location information sent by the positioning server; and the second determining unit is used for determining whether the first position information is credible or not according to the first position information and the second position information.

The embodiment of the invention also provides a terminal position determining method which is applied to the positioning server and comprises the following steps: acquiring first position information and second position information of the terminal; and determining whether the first position information is credible or not according to the first position information and the second position information.

Optionally, the acquiring the first location information of the terminal includes: and receiving the first position information which is transmitted by the access network equipment through the core network element.

Optionally, the acquiring the first location information of the terminal includes: and receiving the first position information reported by a core network element, wherein the first position information is determined by the core network element according to the virtual cell identifier corresponding to the terminal.

The embodiment of the invention also provides a device for determining the terminal position, which comprises the following steps: a fifth obtaining unit, configured to obtain first location information and second location information of the terminal; and the third determining unit is used for determining whether the first position information is credible or not according to the first position information and the second position information.

The embodiment of the invention also provides a computer readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to execute the steps of any one of the terminal position determining methods.

The embodiment of the invention also provides another terminal position determining device, which comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes the steps of any one of the terminal position determining methods when running the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

and comparing the first position information of the terminal with the second position information to determine whether the first position information reported by the terminal is credible. The method can effectively avoid the influence of the access network equipment on the emergency call flow of the terminal by mapping the terminal to the wrong virtual cell.

Drawings

Fig. 1 is a flowchart of a terminal position determining method in an embodiment of the present invention;

fig. 2 is a signaling diagram of a terminal position determining method corresponding to fig. 1;

FIG. 3 is a flow chart of another method of determining a location of a terminal in an embodiment of the invention;

fig. 4 is a signaling diagram of a terminal position determining method corresponding to fig. 3;

FIG. 5 is a flow chart of yet another method of determining a terminal position in an embodiment of the present invention;

fig. 6 is a signaling diagram of a terminal position determining method corresponding to fig. 5;

fig. 7 is a schematic structural diagram of a terminal position determining apparatus in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another terminal position determining apparatus in an embodiment of the present invention;

fig. 9 is a schematic structural view of still another terminal position determining apparatus in the embodiment of the present invention.

Detailed Description

As described above, in the prior art, if the geographical location information reported by the terminal is not trusted, the access network device maps the geographical location information of the terminal to the wrong virtual cell, and further, the core network element stores the wrong virtual cell Identifier (ID), which affects the emergency call flow.

In the embodiment of the invention, the second location information obtained by the location server can be considered to be trusted because the location server is under the control of the wireless network operator. And comparing the first position information of the terminal with the second position information to determine whether the first position information reported by the terminal is credible. The method can effectively avoid the influence of the access network equipment on the emergency call flow of the terminal by mapping the terminal to the wrong virtual cell.

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

The mid-shield terminal in the embodiment of the present invention is a device with a wireless communication function, and may be referred to as a terminal device (terminal), a Mobile Station (MS), a Mobile Terminal (MT), a User Equipment (UE) access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The user equipment may be fixed or mobile. It should be noted that the ue may support at least one wireless communication technology, such as LTE, new radio, NR, etc. For example, the user device may be a mobile phone, tablet, desktop, notebook, all-in-one, in-vehicle, virtual Reality (VR) user device, augmented reality (augmented reality, AR) user device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self-driving), a wireless terminal in tele-surgery (remote medical surgery), a wireless terminal in smart grid, a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city, a wireless terminal in smart home (PLMN), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a user device in a future mobile communication network, or a user device in a future public land mobile network (public land mobile network), etc. In some embodiments of the present application, the user equipment may also be a device with a transceiving function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

In the embodiment of the present invention, the access network device is a device that provides a wireless communication function for the terminal device, and may also be referred to as a radio access network (radio access network, RAN) device, or an access network element, etc. Wherein the access network device may support at least one wireless communication technology, e.g., LTE, NR, etc. By way of example, access network devices include, but are not limited to: next generation base stations (gnbs), evolved node bs (enbs), radio network controllers (radio network controller, RNCs), node bs (node bs, NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBUs), transceiving points (transmitting and receiving point, TRPs), transmitting points (transmitting point, TP), mobile switching centers, and the like in a fifth generation mobile communication system (5 th-generation, 5G). The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the access network device may be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, and an access network device in future mobile communications or an access network device in a future evolved PLMN, etc. In some embodiments, the access network device may also be a device, such as a system-on-a-chip, having the functionality to provide wireless communication for the terminal device. By way of example, the chip system may include a chip, and may also include other discrete devices.

In some embodiments, the access network device may also communicate with an internet protocol (Internet Protocol, IP) network, such as the internet, a private IP network, or other data network, among others.

In the embodiment of the invention, the core network is composed of core network elements. The core network element may be referred to as a core network device, and is a network element deployed in a core network, for example, a core network control plane network element or a core network user plane network element. The Core Network in the embodiment of the application may be an evolved packet Core Network (Evolved Packet Core, EPC), a 5G Core Network (5G Core Network), or may be a new Core Network in a future communication system. For example, the 5G core network is composed of a set of network elements, and implements access and mobility management functions (Access and Mobility Management Function, AMF) for functions such as mobility management, user plane functions (User Plane Function, UPF) for functions such as packet routing forwarding and QoS (Quality of Service) management, session management functions (Session Management Function, SMF) for functions such as session management, IP address allocation and management, and the like. The EPC may be composed of a mobility management entity (Mobility Management Entity, MME) providing functions of mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions of packet forwarding, etc., and a PDN Gateway (P-GW) providing functions of terminal address allocation, rate control, etc. For multicast broadcast service (Multicast Broadcast Service, MBS), the core network may include several new network elements to implement functions such as forwarding of data packets, MBS session management, qoS management, transmission mode switching (switching between unicast and multicast/broadcast transmission modes), and so on. Alternatively, the functions may be implemented by an existing core network element.

The embodiment of the invention provides a terminal position determining method, and the method is described in detail through specific steps with reference to fig. 1.

In a specific implementation, the method for determining the terminal position corresponding to the following steps 101 to 103 may be executed by a chip having a data processing function in the access network device, or may be executed by a chip module of the chip including the data processing function in the access network device.

Step 101, obtaining first position information reported by a terminal.

In a specific implementation, a positioning module can be built in the terminal, and the terminal can acquire the geographic position information of the terminal through the positioning module. The positioning module may be a global navigation satellite system (Global Navigation Satellite System, GNSS) module, in particular a beidou satellite positioning module or a global positioning system (Global Positioning System, GPS), or other satellite positioning modules.

In the embodiment of the present invention, for simplicity of description, the geographic location information of the terminal acquired by the positioning module is simply referred to as first location information. The first location information of the terminal may be latitude and longitude information of the terminal. After acquiring the first location information, the terminal may report the first location information to the access network device. The access network device may receive the first location information reported by the terminal.

Step 102, obtaining second position information issued by the positioning server.

In a specific implementation, after receiving the first location information reported by the terminal, the access network device may send a location trigger request to the core network element, where the location trigger request is used to trigger the core network element to request the location server for the second location information.

In the embodiment of the present invention, after receiving the first location information, the Access network device may send a location trigger request to an Access & mobile public function (AMF) module.

In the embodiment of the invention, when the access network equipment sends the positioning trigger request to the core network element, the access network equipment can also indicate the identification information of the terminal in the positioning trigger request. The core network element can determine the terminal to be positioned according to the identification information of the terminal.

After receiving the location trigger request, the core network element generates a location request and sends the generated location request to a location server (LMF).

After receiving the positioning request sent by the core network element, the positioning server can perform a positioning process together with the terminal, and calculates the geographic position of the terminal through the information fed back by the terminal. The geographic position of the terminal calculated by the positioning server is the second position information of the terminal. And the positioning server sends the second position information of the terminal to the core network element.

The core network element may receive the second location information sent by the positioning server.

In the embodiment of the present invention, the format of the first location information may be the same as or different from the format of the second location information. If the format of the first position information is different from the format of the second position information, either one of the two can be subjected to format conversion to obtain the first position information and the second position information with the same format, so that subsequent processing is facilitated.

Specifically, if the format of the first location information is different from the format of the second location information, the access network device may convert the format of the first location information, where the format of the converted first location information is the same as the format of the second location information. Alternatively, the access network device may convert the format of the second location information, where the format of the converted second location information is the same as the format of the first location information.

It may be understood that the core network device may also convert the format of the first location information, where the format of the converted first location information is the same as the format of the second location information. Alternatively, the core network device may convert the format of the second location information, where the format of the converted second location information is the same as the format of the first location information.

In the embodiment of the present invention, the specific implementation process and principle of the positioning procedure performed by the positioning server and the terminal together may refer to the existing protocol, and will not be described herein.

Step 103, determining whether the first position information is trusted according to the first position information and the second position information.

In a specific implementation, after receiving the second location information, the access network device may compare the first location information with the second location information, and determine whether the first location information is trusted according to a comparison result of the first location information and the second location information.

In the embodiment of the invention, if the error between the first position information and the second position information is smaller than the first threshold, the first position information can be determined to be credible; and/or if the error between the first location information and the second location information is not less than the first threshold, determining that the first location information is not trusted.

In practical applications, since the positioning server is under the control of the wireless network operator, the positioning result (i.e. the second location information) of the positioning server can be considered to be trusted. Therefore, whether the first position information reported by the terminal is credible or not is determined by comparing the first position information and the second position information.

In a specific implementation, the terminal may be in a mobile state, if the positioning server returns the second position information after a long time, the position of the terminal may be changed greatly, so that a great difference exists between the second position information returned by the positioning server and the first position information of the terminal, and further, the access network device misjudges that the first position information reported by the terminal is not credible.

Aiming at the scene, in order to avoid the situation that the access network equipment misjudges that the first position information reported by the terminal is not credible, the access network equipment can also indicate a first time period in a sent positioning trigger request, wherein the first time period can be the time for the core network element to return the second position information.

That is, the access network device may indicate to the core network element that the second location information of the terminal needs to be returned within the first time period.

In the embodiment of the present invention, the specific form of the first period may be a duration T, and the meaning may be: after receiving the positioning trigger request, the core network element must return second position information within the time range of the duration T; or the access network equipment informs the core network equipment that the time length T is waited after the core network equipment sends the positioning trigger request, and if the second position information is not received in the time length T, the second position information is not waited.

In the embodiment of the invention, if the error between the first position information and the second position information is smaller than the first threshold and the return time of the second position information is within the first time period, the first position information can be determined to be credible;

if the error between the first position information and the second position information is smaller than the first threshold and the return time of the second position information is outside the first time period, the first position information can be determined to be unreliable;

if the error between the first position information and the second position information is not smaller than the first threshold and the return time of the second position information is not within the first time period, the first position information can be determined to be unreliable;

if the error between the first position information and the second position information is not smaller than the first threshold and the return time of the second position information is within the first time period, the first position information can be determined to be not trusted.

In the embodiment of the invention, the first threshold may be preconfigured for the core network element, and the specific value of the first threshold may be set according to an actual application scenario. For example, the first threshold is preconfigured to be 50 meters.

The first threshold may also be related to the moving speed of the terminal in consideration of a scene in which the terminal is in a moving state, and the first threshold is calculated according to the moving speed of the terminal.

In an embodiment of the present invention, if the moving speed of the terminal is v and the maximum duration corresponding to the first period is t, the first threshold is v×t.

In a specific implementation, after determining whether the first position information is trusted according to the error between the second position information and the first position information, the obtained result of whether the first position information is trusted may be checked for a second time, and the result of the second check is finally used as a final result of whether the first position information is trusted.

That is, after determining that the first position information is authentic according to the error between the second position information and the first position information, the obtained result of the first position information being authentic may be subjected to a secondary review. After determining that the first position information is not trusted according to the error between the second position information and the first position information, the obtained result of the first position information being not trusted may also be checked for a second time.

In the embodiment of the invention, after determining whether the first location information is trusted, the access network device may further send a location acquisition request to the terminal, where the location acquisition request may be used to request third location information of the terminal, where the third location information is used to indicate a location of the terminal.

In a specific implementation, whether the first location information is authentic or not can be checked twice by an error between the third location information and the second location information. If the error between the third position information and the second position information is smaller than the first threshold, determining that the first position information is credible; if the error between the third position information and the second information is not smaller than the first threshold, the first position information is determined to be not credible.

In the embodiment of the present invention, substantially both the first location information and the third location information are used to indicate the location of the terminal. The first position information is different from the third position information in that the terminal is the first position information and the third position information acquired at different times, and the time when the terminal acquires the first position information is earlier than the time when the terminal acquires the third position information.

If the error between the third position information and the second position information is less than the first threshold, it is substantially indicative of less error between the third position information and the first position information. In other words, the moving distance of the terminal in the time period from the time T1 when the access network device receives the first location information to the time T3 when the access network device receives the third location information is smaller.

If the error between the third position information and the second position information is not less than the first threshold, the error between the third position information and the first position information is substantially larger. That is, the movement distance of the terminal is larger in the time period from the time T1 when the first location information is received to the time T3 when the third location information is received by the access network device, and T1 to T3.

In some cases, for example, the terminal is in a slow moving state, the displacement of the terminal in the period of T1 to T3 does not change greatly. Alternatively, the terminal may be in a fast moving state, but if the error between the third position information and the second position information is not less than the first threshold, this means that the displacement of the terminal changes beyond expectations.

Therefore, in the embodiment of the present invention, if the access network device detects that the error between the third location information and the second location information is smaller than the first threshold, it may be determined that the first location information is trusted. Otherwise, if the error between the third position information and the second position information is detected to be not smaller than the first threshold, the first position information is determined to be not trusted.

In a specific implementation, after determining that the first location information is trusted, the access network device may map the first location information of the terminal to a corresponding virtual cell, and send the virtual cell corresponding to the first location information to the core network element.

In the embodiment of the invention, after the first position information is determined to be trusted, the access network device can map the second position information to the corresponding virtual cell and send the virtual cell corresponding to the second position information to the core network element.

If the first position information is determined to be not trusted, the access network equipment does not acquire the virtual cell corresponding to the first position information. At this time, the core network element will not receive the virtual cell about the terminal sent by the access network device.

In order to more intuitively describe the terminal position determining method provided in the above embodiment, with reference to fig. 2, signaling diagrams corresponding to the above steps 101 to 103 are given.

In step 201, the terminal transmits first location information.

In a specific implementation, the terminal sends first location information to the access network device. The first location information may be acquired by a positioning module built in the terminal.

Step 202, the access network device sends a location trigger request to the AMF.

In step 203, the amf generates a location request and sends it to the LMF.

And 204, performing a positioning process by the LMF and the terminal.

In a specific implementation, after the LMF and the terminal execute the positioning procedure, the second location information of the terminal may be obtained.

In step 205, the lmf transmits the second location information to the AMF.

The amf forwards the second location information to the access network device, step 206.

In step 207, the access network device determines whether the first location information is trusted.

In the embodiment of the present invention, the specific process of determining whether the first location information is trusted by the access network device may refer to step 103 described above, which is not described herein.

If the access network device determines that the first location information is trusted, the following steps 208 to 209 are performed.

Step 208, obtaining the virtual cell corresponding to the first location information.

Step 209, the virtual cell identity is sent to the AMF.

In a specific implementation, the steps 208 to 209 are optional, that is, after the first location information is determined to be authentic, the steps 208 to 209 may not be performed.

In a specific implementation, if the access network device determines that the first location information is not trusted, the access network device may cancel the procedure of periodically reporting the location information of the terminal. Or, the access network device may also report "terminal XX is not trusted" to the core network element, and "location information reported by terminal XX is not trusted".

In summary, in the embodiment of the present invention, since the positioning server is under the control of the wireless network operator, the second location information obtained by the positioning server can be considered to be trusted. By comparing the first position information and the second position information of the terminal, whether the first position information reported by the terminal is credible or not is determined, and the fact that the access network equipment maps the terminal to an incorrect virtual cell and influences the emergency call flow of the terminal can be effectively avoided.

Referring to fig. 3, another terminal position determining method in an embodiment of the present invention is given, and detailed description is given below through specific steps.

In a specific implementation, the method for determining the terminal position corresponding to the following steps 301 to 303 may be executed by a chip having a data processing function in a core network element, or may be executed by a chip module of a chip including a data processing function in a core network element.

Step 301, obtaining first location information of a terminal.

Step 302, obtaining second location information issued by the location server.

In the embodiment of the invention, the terminal can acquire the own geographic position information through the positioning module, and the geographic position information of the terminal can comprise longitude and latitude information of the terminal. After acquiring the self geographic position information, the terminal can report the acquired geographic position information to the access network equipment. The access network device may receive the geographic location information reported by the terminal.

In the embodiment of the invention, after receiving the geographic position information reported by the terminal, the access network device can directly take the geographic position information reported by the terminal as the first position information and send the first position information to the core network element.

After receiving the first location information, the core network element may send a location request to a location server, where the location request may be used to request second location information of the terminal. The positioning server can perform a positioning process with the terminal to obtain second position information. And the positioning server sends the obtained second position information to the core network element.

In the embodiment of the invention, after receiving the geographic position information of the terminal, the access network device can map the geographic position information of the terminal to obtain the corresponding virtual cell and send the obtained identifier of the virtual cell to the core network element. The core network element may store a mapping relationship between the identifier of the virtual cell and the geographical location information of the terminal. Therefore, the core network element can determine the first position information of the terminal or the range of the first position information of the terminal according to the identifier of the virtual cell reported by the access network equipment.

Step 303, determining whether the first location information is trusted according to the first location information and the second location information.

In a specific implementation, after receiving the second location information, the core network element may compare the first location information with the second location information, and determine whether the first location information is trusted according to a comparison result of the first location information and the second location information.

In a specific implementation, the terminal may be in a mobile state, if the positioning server returns the second position information after a long time, the position of the terminal may be changed greatly, so that a great difference exists between the second position information returned by the positioning server and the first position information of the terminal, and further, the core network element misjudges that the first position information reported by the terminal is unreliable.

Aiming at the scene, in order to avoid the situation that the core network element misjudges that the first position information reported by the terminal is not credible, the core network element can also acquire the time of receiving the first position information and the time of receiving the second position information.

In the embodiment of the invention, if the error between the first position information and the second position information is smaller than a first threshold and the time difference between the time for acquiring the second position information and the time for acquiring the first position information is smaller than a preset value, the first position information can be determined to be credible;

if the error between the first position information and the second position information is smaller than a first threshold, and the time difference between the time for acquiring the second position information and the time for acquiring the first position information is not smaller than a preset value, the first position information can be determined to be unreliable;

if the error between the first position information and the second position information is not smaller than a first threshold, and the time difference between the time for acquiring the second position information and the time for acquiring the first position information is smaller than a preset value, the first position information can be determined to be unreliable;

if the error between the first position information and the second position information is not smaller than the first threshold, and the time difference between the time of acquiring the second position information and the time of acquiring the first position information is not smaller than a preset value, the first position information can be determined to be unreliable.

In the embodiment of the present invention, the preset value of the time difference may be preset. For example, the preset value is 2s. If the error between the first position information and the second position information is smaller than the first threshold and the difference between the time of acquiring the first position information and the time of acquiring the second position information is smaller than 2s, the first position information is determined to be credible.

In a specific implementation, after determining that the first location information is trusted, the core network element may feed back a result of the trusted first location information to the access network device. After the core network element determines that the first location information is not trusted, the core network element may also feed back a result of the trusted first location information to the access network device. Or, whether the first location information is trusted or not, the core network element may feed back the result of whether the first location information is trusted or not to the access network device.

In order to more intuitively describe the terminal position determining method provided in the above embodiment, signaling diagrams corresponding to the above steps 301 to 303 are given with reference to fig. 4.

In step 401, the terminal sends geographical location information.

Step 402, the access network device maps the geographic position information of the terminal to obtain the identifier of the virtual cell corresponding to the geographic position information.

In step 403, the access network device sends the identity of the virtual cell to the AMF.

Step 404, the amf obtains the first location information of the terminal according to the identifier of the virtual cell.

In step 405, the amf generates a location request and sends it to the LMF.

In step 406, the lmf performs a positioning procedure with the terminal.

In step 407, the lmf sends the second location information to the AMF.

In step 408, the AMF compares the second location information to the first location information to determine if the first location information is authentic.

In the embodiment of the present invention, the specific process of determining whether the first location information is trusted by the core network element may refer to step 303, which is not described herein.

It can be seen that in the embodiment of the present invention, since the positioning server is under the control of the wireless network operator, the second location information obtained by the positioning server can be considered to be trusted. By comparing the first position information and the second position information of the terminal, whether the first position information reported by the terminal is credible or not is determined, and the fact that the access network equipment maps the terminal to an incorrect virtual cell and influences the emergency call flow of the terminal can be effectively avoided.

Referring to fig. 5, a further terminal position determining method according to an embodiment of the present invention is provided, and detailed description is given below through specific steps.

In a specific implementation, the method for determining the terminal position corresponding to the following steps 501 to 502 may be executed by a chip having a data processing function in the positioning server, or may be executed by a chip module of the chip having the data processing function in the positioning server.

Step 501, acquiring first location information and second location information of a terminal.

In the embodiment of the invention, after receiving the geographic position information reported by the terminal, the access network device can directly take the geographic position information reported by the terminal as the first position information and send the first position information to the core network element. The core network element may send the received first location information to the location server.

After receiving the first position information, the positioning server can trigger the operation of the positioning process with the terminal. And obtaining second position information through a positioning process with the terminal.

In the embodiment of the invention, after receiving the geographic position information of the terminal, the access network device can map the geographic position information of the terminal to obtain the corresponding virtual cell and send the obtained identifier of the virtual cell to the core network element. The core network element may store a mapping relationship between the identifier of the virtual cell and the geographical location information of the terminal. Therefore, the core network element can determine the first position information of the terminal or the range of the first position information of the terminal according to the identifier of the virtual cell reported by the access network equipment. The core network element forwards the determined first location information of the terminal to the location server.

Step 502, determining whether the first location information is trusted according to the first location information and the second location information.

In a specific implementation, after the positioning server obtains the second position information, the positioning server may compare the first position information with the second position information, and determine whether the first position information is trusted according to a comparison result of the first position information and the second position information.

In the embodiment of the invention, the first threshold may be preconfigured for the positioning server, and the specific value of the first threshold may be set according to an actual application scenario. For example, the first threshold is preconfigured to be 50 meters.

In order to more intuitively describe the terminal position determining method provided in the above embodiment, with reference to fig. 6, signaling diagrams corresponding to the above steps 501 to 502 are given.

In step 601, the terminal transmits geographical location information.

Step 602, the access network device maps the geographic position information of the terminal to obtain the identifier of the virtual cell corresponding to the geographic position information.

In step 603, the access network device sends the identity of the virtual cell to the AMF.

In step 604, the amf obtains first location information of the terminal according to the identifier of the virtual cell.

In the embodiment of the invention, the first position information of the terminal acquired by the AMF is geographic position information of the terminal.

In step 605, the amf transmits first location information of the terminal to the LMF.

In step 606, the lmf performs a positioning procedure with the terminal.

In step 607, the lmf compares the second location information to the first location information to determine whether the first location information is authentic.

In the embodiment of the present invention, the specific process of determining whether the first location information is trusted by the location server may refer to step 502 described above, which is not described herein.

Referring to fig. 7, a terminal position determining apparatus 70 according to an embodiment of the present invention is provided, including: a first acquisition unit 701, a second acquisition unit 702, and a first determination unit 703, wherein:

a first obtaining unit 701, configured to obtain first location information reported by the terminal;

a second obtaining unit 702, configured to obtain second location information sent by the positioning server;

a first determining unit 703, configured to determine whether the first location information is trusted according to the first location information and the second location information.

In specific implementation, the specific execution process of the first acquisition unit 701, the second acquisition unit 702, and the first determination unit 703 may refer to steps 101 to 103 correspondingly, which is not described herein.

In a specific implementation, the terminal position determining device 70 may correspond to a Chip with a data transmission function in the access network device, or corresponds to a Chip with a data processing function, for example, a System-On-a-Chip (SOC), a baseband Chip, etc.; or corresponds to a chip module which comprises a chip with a data transmission function in the access network equipment; or corresponds to a chip module with a data processing function chip or corresponds to an access network device.

Referring to fig. 8, another terminal position determining apparatus 80 in an embodiment of the present invention is provided, including: a third acquisition unit 801, a fourth acquisition unit 802, and a second determination unit 803, wherein:

a third obtaining unit 801, configured to obtain first location information of the terminal;

a fourth obtaining unit 802, configured to obtain second location information sent by the positioning server;

a second determining unit 803, configured to determine whether the first location information is trusted according to the first location information and the second location information.

In specific implementation, the specific execution process of the third obtaining unit 801, the fourth obtaining unit 802, and the second determining unit 803 may correspond to the reference steps 301 to 303, which are not described herein.

In a specific implementation, the above-mentioned terminal position determining device 80 may correspond to a Chip with a data transmission function in a core network element, or a Chip with a data processing function, for example, a System-On-a-Chip (SOC), a baseband Chip, etc.; or a chip module corresponding to the core network element and comprising a chip with a data transmission function; or corresponds to a chip module with a data processing function chip or corresponds to a core network element.

Referring to fig. 9, there is provided still another terminal position determining apparatus 90 in an embodiment of the present invention, including: a fifth acquisition unit 901 and a third determination unit 902, wherein:

a fifth acquiring unit 901, configured to acquire first location information and second location information of the terminal;

a third determining unit 902, configured to determine whether the first location information is trusted according to the first location information and the second location information.

In specific implementation, the specific execution process of the fifth obtaining unit 901 and the third determining unit 902 may refer to steps 501 to 502 correspondingly, which is not described herein.

In a specific implementation, the terminal position determining device 90 may correspond to a Chip with a data transmission function in the positioning server, or a Chip with a data processing function, such as a System-On-a-Chip (SOC), a baseband Chip, etc.; or corresponds to a chip module which comprises a chip with a data transmission function in the positioning server; or corresponds to a chip module having a data processing function chip or corresponds to a positioning server.

The embodiment of the invention also provides a computer readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to execute the steps of the terminal position determining method provided by any embodiment.

The embodiment of the invention also provides another terminal position determining device, which comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes the steps of the terminal position determining method provided by any embodiment when running the computer program.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software elements in the processor for execution. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor executes instructions in the memory to perform the steps of the method described above in conjunction with its hardware. To avoid repetition, a detailed description is not provided herein.

In an embodiment of the present application, the processor of the above apparatus may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The present application also provides a computer storage medium storing a computer program for electronic data exchange, the computer program causing a computer to execute some or all of the steps of any one of the methods described in the method embodiments above.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the methods described in the method embodiments above. The computer program product may be a software installation package.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and the division of elements, such as those described above, is merely a logical function division, and may be implemented in other manners, such as multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purposes of the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution contributing to the prior art or in the form of a software product stored in a memory, comprising several instructions for causing a computer device (which may be a personal computer, a server or TRP, etc.) to perform all or part of the steps of the methods of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims

1. A terminal position determining method applied to an access network device, the method comprising:

acquiring first position information reported by the terminal;

acquiring second position information issued by a positioning server;

and determining whether the first position information is credible or not according to the first position information and the second position information.

2. The method for determining a terminal position according to claim 1, wherein the obtaining the second position information sent by the positioning server includes:

sending a positioning trigger request to a core network element, wherein the positioning trigger request is used for triggering the core network element to request the second position information to the positioning server;

and receiving the second position information returned by the core network element.

3. The terminal location determination method of claim 2, wherein the location trigger request is further used to indicate an identity of the terminal.

4. A terminal location determining method as claimed in claim 2 or 3, wherein the location trigger request is further used to indicate a first period of time, the first period of time being: and the core network element returns the time range of the second position information.

5. The method for determining a location of a terminal according to claim 4, wherein determining whether the first location information is authentic based on the first location information and the second location information comprises:

if the error between the first position information and the second position information is smaller than a first threshold and the return time of the second position information is within the first time period, determining that the first position information is credible; and/or the number of the groups of groups,

and if the error between the first position information and the second position information is not smaller than a first threshold and/or the return time of the second position information is not in the first time period, determining that the first position information is not credible.

6. The method of determining a location of a terminal according to claim 1, wherein determining whether the first location information is trusted based on the first location information and the second location information comprises:

and if the error between the first position information and the second position information is smaller than a first threshold, determining that the first position information is credible.

7. The method of determining a location of a terminal of claim 6, wherein determining that the first location information is trusted if an error between the first location information and the second location information is less than a first threshold comprises:

If the error between the first position information and the second position information is smaller than the first threshold, sending a position acquisition request to the terminal, wherein the position acquisition request is used for requesting third position information of the terminal;

acquiring the third position information, wherein the third position information is used for indicating the position of the terminal;

and if the error between the third position information and the second position information is smaller than the first threshold, determining that the first position information is credible.

8. The method as recited in claim 7, further comprising:

and if the error between the third position information and the second position information is not smaller than the first threshold, determining that the first position information is not credible.

9. The method of determining a location of a terminal according to claim 1, wherein determining whether the first location information is trusted based on the first location information and the second location information comprises:

and if the error between the first position information and the second position information is not smaller than a first threshold, determining that the first position information is not trusted.

10. The terminal position determining method of claim 9, wherein determining that the first position information is not trusted if an error between the first position information and the second position information is not less than a first threshold comprises:

If the error between the first position information and the second position information is not smaller than the first threshold, sending a position acquisition request to the terminal, wherein the position acquisition request is used for requesting third position information of the terminal; the third position information is used for indicating the position of the terminal;

acquiring the third position information;

11. The terminal position determining method as claimed in claim 10, further comprising:

12. The terminal position determining method according to any one of claims 6 to 11, wherein the first threshold is preconfigured; or, the first threshold is determined according to the moving speed of the terminal.

13. The terminal position determining method as claimed in claim 1, further comprising:

if the first position information is credible, reporting a virtual cell identifier corresponding to the first position information; or alternatively, the first and second heat exchangers may be,

And reporting the virtual cell identification corresponding to the second position information.

14. A terminal position determining apparatus, comprising:

the first acquisition unit is used for acquiring first position information reported by the terminal;

the second acquisition unit is used for acquiring second position information issued by the positioning server;

and the first determining unit is used for determining whether the first position information is credible or not according to the first position information and the second position information.

15. A computer readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having stored thereon a computer program, characterized in that the computer program when being executed by a processor performs the steps of the terminal position determining method according to any of claims 1 to 13.

16. A terminal position determining device comprising a memory and a processor, said memory having stored thereon a computer program executable on said processor, characterized in that said processor, when executing said computer program, performs the steps of the terminal position determining method according to any of claims 1-13.