CN114080021A

CN114080021A - Method and device for obtaining geographic position information of terminal

Info

Publication number: CN114080021A
Application number: CN202010839681.6A
Authority: CN
Inventors: 李健翔
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2022-02-22
Anticipated expiration: 2040-08-19
Also published as: WO2022037453A1; CN114080021B

Abstract

The disclosure relates to the field of communication, and discloses a method and a device for obtaining geographic position information of a terminal, which are used for reducing transmission delay and improving system service quality. The method comprises the following steps: the service network element sends a positioning request message to the AMF, wherein the positioning request message at least carries the terminal ID of the target terminal; and the AMF sends the positioning request message to the LMF, the LMF acquires the geographical position information of the target terminal after interacting with the target terminal, the LMF sends the geographical position information of the target terminal to the AMF, and the AMF sends the geographical position information of the target terminal to the service network element. Therefore, the service network element can smoothly obtain the geographical position information of the target terminal, thereby greatly reducing the round-trip delay in the process of interacting with the target terminal, further effectively improving the message response speed, improving the success rate of random access and switching and the satisfaction degree of QoS (quality of service), and leading the 5G and NTN network to be fused more closely.

Description

Method and device for obtaining geographic position information of terminal

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method and an apparatus for obtaining geographic location information of a terminal.

Background

In the prior art, referring to fig. 1, a Non-Terrestrial communication network (NTN), i.e., a satellite internet, is introduced by the third Generation Partnership Project (3rd Generation Partnership Project Release 17, 3GPP R17), which has the advantages of wide coverage, small influence by natural disasters and physical attacks, and the like. Meanwhile, the method can be deeply integrated with a ground mobile communication network, such as: fifth generation mobile communication technology (5th generation mobile networks, 5G). The coverage of the ground mobile network is made up, a fusion network system with complementary advantages, close fusion and three-dimensional layering is formed with the ground network, and the information transmission and interaction in the global range are realized.

In the prior art, the coverage radius of an NTN network is generally 200km, and a positioning Service cannot be provided for a terminal, which causes an increase in Round-Trip Time (RTT), and an excessively large delay also causes a decrease in success rate of random access and handover, thereby greatly reducing the satisfaction of Quality of Service (QoS).

Therefore, a method for obtaining geographical location information of a terminal is needed to solve the above problems.

Disclosure of Invention

The embodiment of the disclosure provides a method and a device for obtaining geographic position information of a terminal, which are used for reducing transmission delay and improving system service quality.

The specific technical scheme provided by the disclosure is as follows:

in a first aspect, a method for obtaining geographic location information of a terminal includes:

sending a positioning request message to an Authentication Management Function (AMF), wherein the positioning request message at least carries a terminal Identification (ID) of a target terminal;

and receiving the geographical position information of the target terminal returned by the AMF, wherein the geographical position information of the target terminal is obtained after the AMF triggers a position management service entity (LMF) to interact with the target terminal based on the positioning request message.

Optionally, the location request message further carries any one or any combination of the following information:

positioning a service grade;

a position accuracy requirement, the position accuracy requirement comprising a position accuracy and a response time;

location integrity requirements;

the triggering type of the positioning request message is an access network request;

the positioning request message sent by the terminal is sent periodically or triggered and sent in an event manner;

the geographical position information of the target terminal is reported periodically or reported by event triggering;

reporting period of the geographical position information of the target terminal;

and reporting the sample number of the geographical position information of the target terminal.

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers an LMF to interact with the target terminal based on the location request message, and the method includes any one of the following operations:

triggering the LMF to perform the following operations: calculating and obtaining geographic position information of the target terminal based on reference signal time difference RSTD and reference signal received power RSRP between the target terminal and each service network element reported by the target terminal;

triggering the LMF to perform the following operations: receiving geographical position information reported by the target terminal, wherein the geographical position information is obtained after the target terminal adopts an assisted global navigation satellite system A-GNSS positioning function for calculation;

triggering the LMF to perform the following operations: and receiving the geographical position information reported by the target terminal, wherein the geographical position information is obtained by calculating on the basis of the obtained RSTD after the RSTD between the target terminal and a plurality of service network elements is measured by adopting a positioning signal sent by a non-terrestrial communication network (NTN).

Optionally, the receiving the geographical location information of the target terminal returned by the AMF includes:

receiving the geographic position information of the target terminal returned by the AMF and subjected to fuzzification processing;

wherein the content of the first and second substances,

the target horizontal geographic position contained in the geographic position information of the target terminal is generated by adding a value in a first preset value interval to an original horizontal geographic position contained in the geographic position information;

and the target vertical geographic position contained in the geographic position information of the target terminal is generated by adding a value in a second preset value interval to the original vertical geographic position contained in the geographic position information.

In a second aspect, a method for obtaining geographical location information of a terminal includes:

receiving a positioning request message sent by a service network element, wherein the positioning request message at least carries a terminal identification ID of a target terminal;

sending the positioning request message to a location management service entity (LMF);

and receiving the geographical position information of the target terminal returned by the LMF, wherein the geographical position information of the target terminal is obtained after the LMF interacts with the target terminal based on the positioning request message.

And sending the geographical position information of the target terminal to the service network element.

positioning a service grade;

location integrity requirements;

Optionally, receiving the geographical location information of the target terminal returned by the LMF, where the geographical location information of the target terminal is obtained after the LMF interacts with the target terminal based on the location request message, and the receiving includes:

receiving the geographical location information of the target terminal returned by the LMF, wherein the geographical location information of the target terminal is obtained by adopting any one of the following operations:

the LMF is obtained after calculation based on reference signal time difference RSTD and reference signal received power RSRP between the target terminal and each service network element reported by the target terminal;

the target terminal is obtained by adopting an assisted global navigation satellite system A-GNSS positioning function for calculation;

and the target terminal is obtained by calculating based on the obtained RSTDs after measuring the RSTDs between the target terminal and a plurality of service network elements by adopting a positioning signal sent by a non-terrestrial communication network (NTN).

Optionally, sending the geographical location information to the serving network element includes:

after the geographic position information is fuzzified, sending the fuzzified geographic position information to the service network element, wherein the fuzzification processing comprises the following steps:

adding a value in a first preset value interval to the original horizontal geographic position contained in the geographic position information to generate a corresponding target horizontal geographic position;

and adding a value in a second preset value interval to the original vertical geographic position contained in the geographic position information to generate a corresponding target vertical geographic position.

In a third aspect, a method for obtaining geographic location information of a terminal includes:

receiving a positioning request message sent by an authentication management function entity (AMF), wherein the positioning request message is sent by a service network element and at least carries a terminal Identification (ID) of a target terminal;

based on the positioning request message, obtaining the geographical position information of the target terminal after interacting with the target terminal;

and sending the geographical position information of the target terminal to the AMF, and enabling the AMF to send the geographical position information of the target terminal to the service network element.

positioning a service grade;

location integrity requirements;

Optionally, obtaining the geographic location information of the target terminal after interacting with the target terminal based on the positioning request message includes any one of the following operations:

calculating and obtaining geographic position information of the target terminal based on reference signal time difference RSTD and reference signal received power RSRP between the target terminal and each service network element reported by the target terminal;

receiving geographical position information reported by the target terminal, wherein the geographical position information is obtained after the target terminal adopts an assisted global navigation satellite system A-GNSS positioning function for calculation;

and receiving the geographical position information reported by the target terminal, wherein the geographical position information is obtained by calculating on the basis of the obtained RSTD after the RSTD between the target terminal and a plurality of service network elements is measured by adopting a positioning signal sent by a non-terrestrial communication network (NTN).

Optionally, the sending the geographical location information of the target terminal to the AMF, and causing the AMF to send the geographical location information of the target terminal to the serving network element includes:

sending the geographical position information of the target terminal to the AMF, and enabling the AMF to fuzzify the geographical position information of the target terminal and then send the fuzzified geographical position information of the target terminal to the service network element;

wherein the blurring process includes:

In a fourth aspect, a serving network element comprises:

a memory for storing an executable computer program;

a processor for reading the computer program in the memory, performing the following processes:

and receiving the geographical position information of the target terminal returned by the AMF through a transceiver, wherein the geographical position information of the target terminal is obtained after the AMF triggers a position management service entity (LMF) to interact with the target terminal based on the positioning request message.

positioning a service grade;

location integrity requirements;

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers an LMF to interact with the target terminal based on the location request message, and the processor is configured to perform any one of the following operations:

Optionally, the processor is configured to receive geographic location information of the target terminal returned by the AMF, and is configured to:

wherein the content of the first and second substances,

In a fifth aspect, an authentication management function entity AMF includes:

a memory for storing an executable computer program;

receiving a positioning request message sent by a service network element through a transceiver, wherein the positioning request message at least carries a terminal identification ID of a target terminal;

positioning a service grade;

location integrity requirements;

Optionally, the geographic location information of the target terminal returned by the LMF is received, where the geographic location information of the target terminal is obtained after the LMF interacts with the target terminal based on the location request message, and the processor is configured to:

Optionally, the processor is configured to send the geographic location information to the serving network element, and to:

In a sixth aspect, a location management service entity, LMF, comprises:

a memory for storing an executable computer program;

receiving a positioning request message sent by an authentication management function entity (AMF) through a transceiver, wherein the positioning request message is sent by a service network element and at least carries a terminal Identification (ID) of a target terminal;

positioning a service grade;

location integrity requirements;

Optionally, based on the positioning request message, after interacting with the target terminal, obtaining geographic location information of the target terminal, where the processor is configured to perform any one of the following operations:

Optionally, the geographic location information of the target terminal is sent to the AMF, the AMF is enabled to send the geographic location information of the target terminal to the serving network element, and the processor is configured to:

wherein the blurring process includes:

In a seventh aspect, an apparatus for obtaining geographic location information of a terminal includes:

a sending unit, configured to send a location request message to an authentication management function entity AMF, where the location request message at least carries a terminal identifier ID of a target terminal;

and the receiving unit is used for receiving the geographical position information of the target terminal returned by the AMF, wherein the geographical position information of the target terminal is obtained after the AMF triggers a position management service entity LMF to interact with the target terminal based on the positioning request message.

In an eighth aspect, an apparatus for obtaining geographic location information of a terminal includes:

a first receiving unit, configured to receive a positioning request message sent by a serving network element, where the positioning request message at least carries a terminal identifier ID of a target terminal;

the first sending unit is used for sending the positioning request message to a location management service entity LMF;

and a second receiving unit receives the geographical position information of the target terminal returned by the LMF, wherein the geographical position information of the target terminal is obtained after the LMF interacts with the target terminal based on the positioning request message.

And the second sending unit is used for sending the geographical position information of the target terminal to the service network element.

In a ninth aspect, an apparatus for obtaining geographical location information of a terminal includes:

a receiving unit, configured to receive a positioning request message sent by an authentication management function entity AMF, where the positioning request message is sent by a serving network element, and the positioning request message at least carries a terminal identifier ID of a target terminal;

the processing unit is used for acquiring the geographical position information of the target terminal after interacting with the target terminal based on the positioning request message;

a sending unit, configured to send the geographic location information of the target terminal to the AMF, so that the AMF sends the geographic location information of the target terminal to the serving network element.

A tenth aspect is a computer-readable storage medium, wherein instructions that, when executed by a processor, enable the processor to perform the method of any of the first aspects.

In an eleventh aspect, a computer-readable storage medium, wherein instructions when executed by a processor, enable the processor to perform the method of any of the second aspects.

Twelfth, a computer readable storage medium, wherein instructions, when executed by a processor, enable the processor to perform the method of any of the third above.

In the embodiment of the disclosure, a service network element sends a positioning request message to an AMF, wherein the positioning request message at least carries a terminal ID of a target terminal; and the AMF sends a positioning request message to the LMF, the LMF acquires the geographical position information of the target terminal after interacting with the target terminal, the LMF sends the geographical position information of the target terminal to the AMF, and the AMF sends the geographical position information of the target terminal to the service network element. Therefore, the service network element can smoothly obtain the geographical position information of the target terminal, thereby greatly reducing the round-trip delay in the process of interacting with the target terminal, further effectively improving the message response speed, improving the success rate of random access and switching and the satisfaction degree of QoS (quality of service), and leading the 5G and NTN network to be fused more closely.

Drawings

FIG. 1 is a schematic diagram of an NTN network system architecture in the prior art;

fig. 2 is a schematic flow chart illustrating a process of acquiring a geographical location of a terminal according to an embodiment of the present disclosure;

fig. 3 is a schematic flow chart illustrating interaction between a first LMF and a terminal and obtaining a geographic location of the terminal in the embodiment of the present disclosure;

fig. 4 is a schematic flow chart illustrating interaction between a second LMF and a terminal and obtaining a geographic location of the terminal in the embodiment of the present disclosure;

fig. 5 is a schematic flow chart illustrating interaction between a third LMF and a terminal and obtaining a geographic location of the terminal in the embodiment of the present disclosure;

fig. 6 is a schematic entity architecture diagram of a serving network element in an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of the physical architecture of an AMF according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of the physical architecture of an LMF in an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a logical architecture of a serving network element in an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of the logic architecture of an AMF in an embodiment of the present disclosure;

FIG. 11 is a logical architecture diagram of an LMF in an embodiment of the present disclosure.

Detailed Description

In order to reduce transmission delay and improve system service quality, in the embodiment of the present disclosure, a service network element sends a Location request message carrying at least an Identity (ID) of a terminal to an Authentication Management Function (AMF), the AMF sends the Location request message to a Location Management service entity (LMF) after receiving the Location request message, the LMF interacts with the target terminal after receiving the Location request message to obtain geographic Location information of the target terminal, and then the LMF sends the obtained geographic Location information of the target terminal to the AMF, and the AMF feeds the geographic Location information of the target terminal back to the service network element.

In practical applications, the serving network element refers to all entities in the core network that can process the positioning information, and in the embodiment of the present disclosure, the serving network element is taken as an example of a base station.

Preferred embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 2, in the embodiment of the present disclosure, a specific process of acquiring the geographic location information of the target terminal is as follows:

step 200: and the base station sends a positioning request message to the AMF, wherein the positioning request message at least comprises a terminal ID.

The positioning request message further carries any one or any combination of the following information:

positioning a service grade;

location integrity requirements;

Step 210: the AMF sends a location request message to the LMF.

Specifically, the AMF sends the location request message to the LMF by using the existing mechanism.

Step 220: triggering a Lightweight Presence Protocol (LPP) flow, interacting with a target terminal, and obtaining the geographical position information of the target terminal.

Specifically, the target terminal has the following two situations:

case 1: the target terminal supports a Global Navigation Satellite System (GNSS) function;

case 2: the target terminal does not support GNSS functions.

Aiming at the situation 1, the LMF interacts with the target terminal in the following two ways to obtain the geographical position information of the target terminal:

mode 1:

and the LMF calculates and obtains the geographical position information of the target terminal based on the Reference Signal Time Difference (RSTD) and the Reference Signal Receiving Power (RSRP) reported by the target terminal.

Mode 2:

the LMF receives geographical position information reported by the target terminal, wherein the geographical position information is obtained after the target terminal is calculated by adopting an Assisted-Global Navigation Satellite System (A-GNSS) positioning function.

For the situation 2, the LMF receives geographical location information reported by the target terminal, where the geographical location information is obtained by calculating a positioning signal sent by the target terminal through a Non-Terrestrial communication network (NTN).

Step 230: and the LMF sends the geographical position information of the target terminal to the AMF.

In a specific implementation, the manner of sending the geographical location information of the target terminal to the AMF by the LMF is the same as the manner of sending the location request message to the LMF by the AMF.

Step 240: and the AMF sends the geographical position information of the target terminal to the base station.

In the embodiment of the present disclosure, when receiving geographic location information of a target terminal sent by an LMF, an AMF receives accurate information of both an original horizontal geographic location and an original vertical geographic location included in the geographic location information, and in order to avoid privacy of the target terminal from being leaked, the AMF may fuzzify the original horizontal geographic location and the original vertical geographic location included in the geographic location information within a reasonable range before sending the geographic location information of the target terminal to the base station without affecting a service used by the target terminal, which specifically includes:

the AMF adds a value in a first preset value interval to an original horizontal geographic position contained in the geographic position information to generate a corresponding target horizontal geographic position;

and the AMF adds a value in a second preset value interval to the original vertical geographic position contained in the geographic position information to generate a corresponding target vertical geographic position.

In the embodiment of the present disclosure, it is assumed that the accurate information of the original horizontal geographic location is 2 kilometers (km) from the base station, and the accurate information of the original vertical geographic location is 10 meters (m) from the ground, which are included in the geographic location information.

For example, assuming that the first preset value interval is 5km to 20km, the AMF randomly selects one value from 5km to 20km, assuming that the value is 12.5km, and then the AMF adds 12.5km to the original horizontal geographic location included in the geographic location information by 2km to generate a corresponding target horizontal geographic location of 4.5 km.

And assuming that the second preset value interval is 10m to 100m, then the AMF randomly selects one value from 10m to 100m, assuming that the value is 55m, and then the AMF adds 55m to the original vertical geographic position 10m contained in the geographic position information to generate a corresponding target vertical geographic position of 65 m.

Thus, the geographic location information after the fuzzification processing is as follows: 4.5km from the base station and 65m from the ground.

And the AMF sends the geographic position information of the target terminal after fuzzification processing to a base station.

Three different scenarios are used below to further detail three different implementations of the above step 220.

For the case of mode 1 in case 1, referring to fig. 3, step 220 is performed as follows:

step 22000: and the target terminal reports the RSTD and the RSRP between the target terminal and each base station to the LMF.

Specifically, the RSTD with each base station refers to a reference signal time difference between the target terminal and each base station around the target terminal.

Step 22001: and the LMF calculates the geographical position information of the target terminal based on RSTD and RSRP between the target terminal and each site reported by the target terminal.

Specifically, the RSTD is assumed to be 0 second, the RSRP is assumed to be y watts (the distance corresponding to the y watts is assumed to be the radius of the ring, and the radius is assumed to be 200km), and the base station is assumed to be 50m higher. The RSRP limits the annular range of a target terminal to a base station, and the RSTD limits the linear distance of the target terminal to the base station, that is, after the target terminal reports data of 0 second and y watts, the LMF calculates the accurate information of the original horizontal geographic position to be 200km away from the base station and the accurate information of the original vertical geographic position to be 50m away from the ground through a simple sine and cosine function formula.

For the case of mode 2 in case 1, referring to fig. 4, the step 220 is performed as follows:

step 22010: and the target terminal obtains the geographical position information of the target terminal after calculation by adopting an A-GNSS positioning function.

Specifically, the a-GNSS provides assistance information to allow the GNSS receiver to know the frequency range to be acquired prior to acquisition, and then the assistance data provides information on the geographical location of the satellites used to calculate the geographical location information of the GNSS target terminal. After the satellite signals are captured, the pseudorange measurement is started, and then the a-GNSS receiver starts to calculate the target terminal geographical location information, for example, the accurate information of the original horizontal geographical location is directly calculated to be 200km from the base station, and the accurate information of the original vertical geographical location is calculated to be 50m from the ground.

Step 22011: and the target terminal reports the geographical position information of the target terminal to the LMF.

For the above case 2, referring to fig. 5, the step 220 is performed as follows:

step 22020: and the target terminal adopts the positioning signals sent by the NTN, measures the RSTD between the target terminal and a plurality of sites, and calculates and obtains the geographical position information of the target terminal based on each obtained RSTD.

Specifically, the target terminal measures RSTDs between the target terminal and the plurality of base stations according to a downlink positioning signal sent by the NTN network, and then calculates geographical location information of the target terminal according to the RSTDs. Assuming that the measured RSTDs are all 0 second, it can be concluded that the target terminal is located at the intersection of the loops and the positions from the base station are all base station coverage radii, assuming that the base station coverage radius is 200km, the accurate information of the original horizontal geographic position can be directly calculated to be 200km from the base station, and the accurate information of the original vertical geographic position is 50m from the ground.

Step 22021: and the target terminal reports the geographical position information of the target terminal to the LMF.

Based on the same inventive concept, referring to fig. 6, an embodiment of the present disclosure provides a network device (e.g., a serving network element), which at least includes:

a memory 601 for storing an executable computer program;

a processor 602 for reading the computer program in the memory, and executing the following processes:

Wherein in fig. 6 the bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented in particular by processor 602, and various circuits of memory, represented by memory 601, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 602 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 602 in performing operations.

positioning a service grade;

location integrity requirements;

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers, based on the location request message, an LMF to interact with the target terminal, and the processor 602 is configured to perform any one of the following operations:

Optionally, the processor 602 is configured to receive the geographic location information of the target terminal returned by the AMF, and:

wherein the content of the first and second substances,

The memory 601 and the processor 602 cooperate with each other to implement any one of the methods performed by the serving network element in steps 200 to 240 in the foregoing embodiments, which are not described herein again.

Based on the same inventive concept, referring to fig. 7, an embodiment of the present disclosure provides a network device (e.g., AMF) including at least:

a memory 701 for storing an executable computer program;

a processor 702 for reading the computer program in the memory, and executing the following processes:

Wherein in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 702, and various circuits, represented by memory 701, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 702 in performing operations.

positioning a service grade;

location integrity requirements;

Optionally, the geographic location information of the target terminal returned by the LMF is received, where the geographic location information of the target terminal is obtained after the LMF interacts with the target terminal based on the location request message, and the processor 702 is configured to:

Optionally, the processor 702 is configured to send the geographic location information to the serving network element, and to:

The memory 701 and the processor 702 cooperate with each other to implement any one of the methods executed by the AMF in steps 200 to 240 in the above embodiments, which is not described herein again.

Based on the same inventive concept, referring to fig. 8, an embodiment of the present disclosure provides a network device (e.g., LMF) including at least:

a memory 801 for storing executable computer programs;

a processor 802 for reading the computer program in the memory, performing the following processes:

Where in fig. 8 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 802 and various circuits of memory represented by memory 801 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 802 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 802 in performing operations.

positioning a service grade;

location integrity requirements;

Optionally, based on the positioning request message, after interacting with the target terminal, obtaining the geographic location information of the target terminal, where the processor 802 is configured to perform any one of the following operations:

Optionally, the geographic location information of the target terminal is sent to the AMF, so that the AMF sends the geographic location information of the target terminal to the serving network element, and the processor 802 is configured to:

wherein the blurring process includes:

The memory 801 and the processor 802 cooperate with each other to implement any one of the methods performed by the LMF in steps 200 to 240 in the above embodiments, which is not described herein again.

Based on the same inventive concept, in the embodiments of the present disclosure, a serving network element is provided, as shown in fig. 9, and at least includes: a transmitting unit 901 and a receiving unit 902, wherein,

a sending unit 901, configured to send a location request message to an authentication management function entity AMF, where the location request message at least carries a terminal identifier ID of a target terminal;

a receiving unit 902, configured to receive the geographical location information of the target terminal returned by the AMF, where the geographical location information of the target terminal is obtained after the AMF triggers a location management service entity LMF to interact with the target terminal based on the location request message.

The sending unit 901 and the receiving unit 902 cooperate with each other to implement any one of the methods executed by the serving network element in steps 200 to 240 in the foregoing embodiments, which is not described herein again.

Based on the same inventive concept, in the embodiments of the present disclosure, an AMF is provided, as shown in fig. 10, which at least includes: a first receiving unit 1001, a first transmitting unit 1002, a second receiving unit 1003 and a second transmitting unit 1004, wherein,

a first receiving unit 1001, configured to receive a positioning request message sent by a serving network element, where the positioning request message at least carries a terminal identifier ID of a target terminal;

a first sending unit 1002, configured to send the location request message to a location management service entity LMF;

a second receiving unit 1003, configured to receive the geographic location information of the target terminal returned by the LMF, where the geographic location information of the target terminal is obtained after the LMF interacts with the target terminal based on the location request message.

A second sending unit 1004, configured to send the geographic location information of the target terminal to the serving network element.

The first sending unit 1002 and the first receiving unit 1001 cooperate with each other, and the second sending unit 1004 and the second receiving unit 1003 cooperate with each other, so as to implement any one of the methods executed by the AMF in steps 200 to 240 in the foregoing embodiment, which is not described herein again.

Based on the same inventive concept, in the embodiments of the present disclosure, an LMF is provided, as shown in fig. 11, and at least includes: a receiving unit 1101, a processing unit 1102 and a sending unit 1103, wherein,

a receiving unit 1101, configured to receive a positioning request message sent by an authentication management function entity AMF, where the positioning request message is sent by a serving network element, and the positioning request message at least carries a terminal identifier ID of a target terminal;

a processing unit 1102, configured to obtain geographic location information of the target terminal after interacting with the target terminal based on the positioning request message;

a sending unit 1103, configured to send the geographic location information of the target terminal to the AMF, so that the AMF sends the geographic location information of the target terminal to the serving network element.

The receiving unit 1101, the processing unit 1102 and the sending unit 1103 cooperate with each other to implement any one of the methods executed by the LMF in steps 200 to 240 in the above embodiments, which is not described herein again.

Based on the same inventive concept, the embodiments of the present disclosure provide a computer-readable storage medium, and when instructions in the storage medium are executed by a processor, the processor can execute any one of the methods performed by the serving network element in the above-mentioned processes.

Based on the same inventive concept, the disclosed embodiments provide a computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor, enable the processor to perform any one of the methods performed by the AMF in the above-described flow.

Based on the same inventive concept, the embodiments of the present disclosure provide a computer-readable storage medium, and when instructions in the storage medium are executed by a processor, the processor can execute any one of the methods executed by the LMF in the above-mentioned flow.

In summary, in the embodiment of the present disclosure, a serving network element sends a location request message to an AMF, where the location request message at least carries a terminal ID of a target terminal; and the AMF sends a positioning request message to the LMF, the LMF acquires the geographical position information of the target terminal after interacting with the target terminal, the LMF sends the geographical position information of the target terminal to the AMF, and the AMF sends the geographical position information of the target terminal to the service network element. Therefore, the service network element can smoothly obtain the geographical position information of the target terminal, thereby greatly reducing the round-trip delay in the process of interacting with the target terminal, further effectively improving the message response speed, improving the success rate of random access and switching and the satisfaction degree of QoS (quality of service), and leading the 5G and NTN network to be fused more closely.

On the other hand, on the premise of not influencing the service used by the target terminal, the AMF performs fuzzification processing on the geographic position information of the target terminal, so that the privacy of the target terminal is prevented from being leaked.

As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present disclosure have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the disclosure.

It will be apparent to those skilled in the art that various changes and modifications may be made to the disclosed embodiments without departing from the spirit and scope of the disclosed embodiments. Thus, if such modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to encompass such modifications and variations.

Claims

1. A method for obtaining geographical location information of a terminal, applied to a serving network element, comprising:

2. The method of claim 1, wherein any one or any combination of the following information is further carried in the positioning request message:

positioning a service grade;

location integrity requirements;

3. The method as claimed in claim 1 or 2, wherein the geographic location information of the target terminal is obtained after the AMF triggers an LMF to interact with the target terminal based on the location request message, and includes any one of the following operations:

4. The method according to claim 1 or 2, wherein receiving the geographical location information of the target terminal returned by the AMF comprises:

wherein the content of the first and second substances,

5. A method for obtaining geographic location information of a terminal is applied to an Authentication Management Function (AMF), and comprises the following steps:

receiving the geographical position information of the target terminal returned by the LMF, wherein the geographical position information of the target terminal is obtained after the LMF interacts with the target terminal based on the positioning request message;

6. The method of claim 5, wherein any one or any combination of the following information is further carried in the positioning request message:

positioning a service grade;

location integrity requirements;

7. The method as claimed in claim 5 or 6, wherein receiving the geographical location information of the target terminal returned by the LMF, the geographical location information of the target terminal being obtained by the LMF after interacting with the target terminal based on the location request message, comprises:

8. The method of claim 5 or 6, wherein sending the geographical location information to the serving network element comprises:

9. A method for obtaining geographic location information of a terminal, which is applied to a location management service entity (LMF), includes:

10. The method of claim 9, wherein any one or any combination of the following information is further carried in the positioning request message:

positioning a service grade;

location integrity requirements;

11. The method according to claim 9 or 10, wherein obtaining the geographical location information of the target terminal after interacting with the target terminal based on the positioning request message comprises any one of the following operations:

12. The method of claim 9 or 10, wherein sending the geographical location information of the target terminal to the AMF, causing the AMF to send the geographical location information of the target terminal to the serving network element, comprises:

wherein the blurring process includes:

13. A serving network element, comprising:

a memory for storing an executable computer program;

14. The serving network element of claim 13, wherein the positioning request message further carries any one or any combination of the following information:

positioning a service grade;

location integrity requirements;

15. The serving network element of claim 13 or 14, wherein the geographical location information of the target terminal is obtained by the AMF after triggering an LMF to interact with the target terminal based on the location request message, and wherein the processor is configured to any one of:

16. The serving network element of claim 13 or 14, wherein receiving the geographical location information of the target terminal returned by the AMF, the processor is configured to:

wherein the content of the first and second substances,

17. An authentication management function, AMF, comprising:

a memory for storing an executable computer program;

18. The AMF of claim 17, wherein the location request message further carries any one or any combination of the following information:

positioning a service grade;

location integrity requirements;

19. The AMF of claim 17 or 18, wherein the LMF is configured to receive the geographical location information of the target terminal returned by the LMF, the geographical location information of the target terminal being obtained by the LMF after interacting with the target terminal based on the location request message, and the processor is configured to:

20. The AMF of claim 17 or 18, wherein the geographical location information is sent to the serving network element, the processor being configured to:

21. A location management service entity, LMF, comprising:

a memory for storing an executable computer program;

22. The LMF of claim 21 wherein the location request message further carries any one or any combination of the following information:

positioning a service grade;

location integrity requirements;

23. The LMF of claim 21 or 22, wherein the geographical location information of the target terminal is obtained after interacting with the target terminal based on the location request message, and wherein the processor is configured to any one of:

24. The LMF of claim 21 or 22, wherein the sending of the geographical location information of the target terminal to the AMF causes the AMF to send the geographical location information of the target terminal to the serving network element, the processor being configured to:

wherein the blurring process includes:

25. An apparatus for obtaining geographical location information of a terminal, applied to a serving network element, includes:

26. An apparatus for obtaining geographic location information of a terminal, applied to an authentication management function entity (AMF), includes:

a second receiving unit, configured to receive geographic location information of the target terminal returned by the LMF, where the geographic location information of the target terminal is obtained after the LMF interacts with the target terminal based on the location request message;

27. An apparatus for obtaining geographical location information of a terminal, wherein the apparatus applied to a location management service entity (LMF) comprises:

28. A computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor, enable the processor to perform the method of any of claims 1-4.

29. A computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor, enable the processor to perform the method of any of claims 5-8.

30. A computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor, enable the processor to perform the method of any of claims 9-12.