WO2022037453A1

WO2022037453A1 - Method and apparatus for obtaining geographical location information of terminal

Info

Publication number: WO2022037453A1
Application number: PCT/CN2021/112000
Authority: WO
Inventors: 李健翔
Original assignee: 大唐移动通信设备有限公司
Priority date: 2020-08-19
Filing date: 2021-08-11
Publication date: 2022-02-24
Also published as: CN114080021B; CN114080021A

Abstract

The present disclosure relates to the field of communications, and discloses a method and apparatus for obtaining geographical location information of a terminal, to reduce transmission delay and improve quality of service (QoS) of the system. The method comprises: a serving network element sends a positioning request message to an AMF, the positioning request message carrying at least a terminal ID of a target terminal; the AMF sends the positioning request message to an LMF; the LMF interacts with the target terminal to obtain geographical location information of the target terminal; the LMF then sends the geographical location information of the target terminal to the AMF; the AMF sends the geographical location information of the target terminal to the serving network element. In this way, the serving network element can smoothly obtain the geographical location information of the target terminal, thereby greatly reducing the round-trip time in the process of interacting with the target terminal, and thus effectively increasing the message response speed, and improving the success rates of random access and handover as well as the degree of satisfaction of QoS, and also making the integration of 5G and NTN networks closer.

Description

A method and device for obtaining geographic location information of a terminal

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application with the application number 202010839681.6 and the application title "A Method and Device for Obtaining Geographic Information of a Terminal" filed with the China Patent Office on August 19, 2020, the entire contents of which are by reference Incorporated in this application.

technical field

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

Background technique

In the prior art, as shown in FIG. 1 , the 3rd Generation Partnership Project Release 17 (3GPP R17) introduced a non-terrestrial communication network (Non-Terrestrial Networks, NTN), that is, the satellite Internet, the NTN It has the advantages of wide coverage and little impact from natural disasters and physical attacks. At the same time, it can be deeply integrated with terrestrial mobile communication networks, such as 5th generation mobile networks (5G). It makes up for the lack of coverage of the terrestrial mobile network, and forms a fusion network system with complementary advantages, close integration, and three-dimensional layering with the terrestrial network, and realizes the transmission and interaction of information on a global scale.

In the prior art, the coverage radius of the NTN network is generally 200km, and it cannot provide positioning services for terminals, which increases the round-trip delay (RTT), and the large delay also brings random access. The success rate of incoming and handover is reduced, thereby greatly reducing the satisfaction of Quality of Service (QoS).

Therefore, there is a need for a method for obtaining geographic location information of a terminal to solve the above problems.

SUMMARY OF THE INVENTION

Embodiments of the present disclosure provide a method and apparatus for obtaining geographic location information of a terminal, so as to reduce transmission delay and improve system service quality.

The specific technical solutions provided by the present disclosure are as follows:

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

sending a positioning request message to the authentication management function entity AMF, where the positioning request message at least carries the terminal identification ID of the target terminal;

Receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is obtained after the AMF triggers the location management service entity LMF to interact with the target terminal based on the location request message.

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

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers the interaction between the LMF and the target terminal based on the positioning request message, including any one of the following operations:

Trigger the LMF to perform the following operations: calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

Triggering the LMF to perform the following operations: receiving geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the Assisted Global Navigation Satellite System A-GNSS positioning function to perform calculations;

Trigger the LMF to perform the following operations: receive geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using a non-terrestrial communication network NTN, measure the distance between the target terminal and multiple serving network elements After the RSTD is obtained, it is calculated based on the obtained individual RSTD.

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

receiving the obfuscated geographic location information of the target terminal returned by the AMF;

in,

The target horizontal geographic location included in the geographic location information of the target terminal is generated by adding a value within the first preset value interval to the original horizontal geographic location included in the geographic location information;

The target vertical geographic location included in the geographic location information of the target terminal is generated by adding a value within the second preset value interval to the original vertical geographic location included in the geographic location information.

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

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

sending the location request message to the location management service entity LMF;

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 positioning request message.

Sending the geographic location information of the target terminal to the serving network element.

Positioning business level;

Location integrity requirements;

Optionally, receiving 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 positioning request message, including:

Receive the geographic location information of the target terminal returned by the LMF, where the geographic location information of the target terminal is obtained by adopting any one of the following operations:

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

The target terminal is obtained after calculation using the auxiliary global navigation satellite system A-GNSS positioning function;

The target terminal adopts the positioning signal sent by the non-terrestrial communication network NTN, and after measuring the RSTD with multiple serving network elements, it is calculated and obtained based on the obtained RSTDs.

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

After the geographic location information is fuzzed, it is sent to the serving network element, where the fuzzification includes:

On the original horizontal geographic location included in the geographic location information, a value within the first preset value interval is added to generate a corresponding target horizontal geographic location;

To the original vertical geographic location included in the geographic location information, a value within the second preset value interval is added to generate a corresponding target vertical geographic location.

A third aspect provides a method for obtaining geographic location information of a terminal, comprising:

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

Based on the positioning request message, after interacting with the target terminal, obtain geographic location information of the target terminal;

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.

Positioning business level;

Location integrity requirements;

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

Calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

receiving the geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the assisted global navigation satellite system A-GNSS positioning function to perform calculation;

Receive the geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using the non-terrestrial communication network NTN, after measuring the RSTD with multiple serving network elements, based on the obtained obtained by RSTD calculation.

Optionally, sending 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, including:

sending the geographic location information of the target terminal to the AMF, so that the AMF fuzzifies the geographic location information of the target terminal and sends it to the serving network element;

Wherein, the fuzzification processing includes:

In a fourth aspect, a service network element includes:

memory for storing executable computer programs;

The processor, for reading the computer program in the memory, performs the following processes:

Receive the geographic location information of the target terminal returned by the AMF through the transceiver, where the geographic location information of the target terminal is the result after the AMF triggers the location management service entity LMF to interact with the target terminal based on the location request message. acquired.

Positioning business level;

Location integrity requirements;

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers the interaction between the LMF and the target terminal based on the positioning request message, and the processor is used for any of the following operations:

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

in,

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

memory for storing executable computer programs;

A processor for reading a computer program in memory to perform the following processes:

Receive, through the transceiver, a positioning request message sent by the serving network element, where the positioning request message at least carries the terminal identification ID of the target terminal;

Positioning business level;

Location integrity requirements;

Optionally, 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 positioning request message, and the The processor is used to:

The target terminal uses the positioning signal sent by the non-terrestrial communication network NTN to measure the RSTD with multiple serving network elements, and then calculate and obtain based on the obtained RSTD.

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

A sixth aspect, a location management service entity LMF, comprising:

memory for storing executable computer programs;

Receive, through the transceiver, a positioning request message sent by the authentication management function entity AMF, where the positioning request message is sent by the serving network element, and the positioning request message at least carries the terminal identification ID of the target terminal;

Positioning business level;

Location integrity requirements;

Optionally, based on the positioning request message, after interacting with the target terminal, obtain geographic location information of the target terminal, and the processor is used for any one of the following operations:

Optionally, 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, and the processor is configured to:

Wherein, the fuzzification processing includes:

A seventh aspect, an apparatus for obtaining geographic location information of a terminal, comprising:

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

A receiving unit, configured to receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is that the AMF triggers the location management service entity LMF and the target terminal based on the location request message obtained after interaction.

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

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

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

The second receiving unit receives 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 positioning request message.

The second sending unit is configured to send the geographic location information of the target terminal to the serving network element.

A ninth aspect, an apparatus for obtaining geographic location information of a terminal, comprising:

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

a processing unit, 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, 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.

In a tenth aspect, a computer-readable storage medium, when the instructions in the storage medium are executed by a processor, enable the processor to perform any one of the methods described in the first aspect above.

In an eleventh aspect, a computer-readable storage medium, when the instructions in the storage medium are executed by a processor, enable the processor to perform any one of the methods described in the second aspect above.

In a twelfth aspect, a computer-readable storage medium, when the instructions in the storage medium are executed by a processor, enable the processor to perform the method of any one of the third aspects above.

In the embodiment of the present disclosure, the serving network element sends a positioning request message to the AMF, where the positioning request message at least carries the terminal ID of the target terminal; the AMF sends the positioning request message to the LMF, and the LMF interacts with the target terminal After obtaining the geographic location information of the target terminal, the LMF sends the geographic location information of the target terminal to the AMF, and the AMF sends the geographic location information of the target terminal to the serving network element. In this way, the serving network element can successfully obtain the geographic location information of the target terminal, thereby greatly reducing the round-trip delay in the process of interacting with the target terminal, thereby effectively improving the message response speed, and improving random access and handover. The success rate and QoS satisfaction also make 5G and NTN networks more closely integrated.

Description of drawings

1 is a schematic diagram of an NTN network system architecture under the prior art;

FIG. 2 is a schematic flowchart of obtaining the geographic location of a terminal in an embodiment of the present disclosure;

3 is a schematic flowchart of a first LMF interacting with a terminal in an embodiment of the present disclosure, and acquiring the geographic location of the terminal;

FIG. 4 is a schematic flowchart of a second type of LMF interacting with a terminal in an embodiment of the present disclosure, and acquiring the geographic location of the terminal;

FIG. 5 is a schematic flowchart of a third type of LMF interacting with a terminal in an embodiment of the present disclosure, and acquiring the geographic location of the terminal;

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

7 is a schematic diagram of an entity architecture of an AMF in an embodiment of the present disclosure;

8 is a schematic diagram of an entity architecture of an LMF in an embodiment of the present disclosure;

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

10 is a schematic diagram of the logical architecture of AMF in an embodiment of the present disclosure;

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

detailed description

In order to reduce the transmission delay and improve the system service quality, in the embodiment of the present disclosure, the service network element sends a positioning request message carrying at least a terminal identity document (ID) to an authentication management function entity (Authentication Management Function, AMF). , the AMF sends the location request message to a location management service entity (Location Management Function, LMF) after receiving the location request message, and the LMF, after receiving the location request message, The target terminal interacts to obtain the geographical position information of the target terminal, and then the LMF sends the obtained geographical position information of the target terminal to the AMF, and the AMF feeds back the geographical position information of the target terminal to the AMF. the serving network element.

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

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

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

Step 200: The base station sends a positioning request message to the AMF, where the positioning request message at least includes a terminal ID.

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

Positioning business level;

Location integrity requirements;

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

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

Step 220: Trigger a Lightweight Presentation Protocol (LPP) process, interact with the target terminal, and obtain geographic location information of the target terminal.

Specifically, the target terminal has the following two situations:

Case 1: The target terminal supports the Global Navigation Satellite System (GNSS) function;

Case 2: The target terminal does not support the GNSS function.

For the situation 1, the LMF adopts the following two ways to interact with the target terminal to obtain the geographic location information of the target terminal:

Way 1:

The LMF calculates and obtains the geographic location information of the target terminal based on the reference signal time difference (Reference Signal Time Difference, RSTD) and the reference signal received power (Reference Signal Receiving Power, RSRP) reported by the target terminal.

Way 2:

The LMF receives the geographic location information reported by the target terminal, and the geographic location information is obtained after the target terminal uses the Assisted-Global Navigation Satellite System (Assisted-Global Navigation Satellite System, A-GNSS) positioning function to calculate.

For the case 2, the LMF receives the geographic location information reported by the target terminal, where the geographic location information is calculated by the target terminal using a positioning signal sent by a non-terrestrial network (Non-Terrestrial Networks, NTN). acquired.

Step 230: The LMF sends the geographic location information of the target terminal to the AMF.

In a specific implementation, the manner in which the LMF sends the geographic location information of the target terminal to the AMF is the same as the manner in which the AMF sends a positioning request message to the LMF.

Step 240: The AMF sends the geographic location information of the target terminal to the base station.

In the embodiment of the present disclosure, when the AMF receives the geographic location information of the target terminal sent by the LMF, the original horizontal geographic location and the original vertical geographic location included in the geographic location information are both accurate information. Leakage, on the premise of not affecting the business services used by the target terminal, before sending the geographical position information of the target terminal to the base station, the AMF can, within a reasonable range, verify the original horizontal geographical position and the geographical position contained in the geographical position information. The original vertical geographic location is fuzzed, including:

The AMF adds a value in the first preset value interval to the original horizontal geographic location included in the geographic location information to generate a corresponding target horizontal geographic location;

The AMF adds a value within the second preset value interval to the original vertical geographic location included in the geographic location information to generate a corresponding target vertical geographic location.

In the embodiment of the present disclosure, it is assumed that the precise information of the original horizontal geographic location is 2 kilometers (kilometer, km) away from the base station, and the precise information of the original vertical geographic location is 10 meters (meter, km) away from the ground. m).

For example, assuming that the first preset value interval is 5km to 20km, then AMF randomly selects a value from 5km to 20km, assuming that it is 12.5km, and then AMF adds 12.5km to the geographic location information including The original horizontal geographic location is 2km, and the corresponding target horizontal geographic location is 4.5km.

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

In this way, the geographic location information after fuzzification is: 4.5km away from the base station and 65m away from the ground.

The AMF will send the obscured geographic location information of the target terminal to the base station.

The three different implementation manners of the foregoing step 220 are further described in detail below using three different scenarios.

For the situation of Mode 1 in the above-mentioned situation 1, referring to FIG. 3 , the execution process of step 220 is as follows:

Step 22000: The target terminal reports the RSTD and RSRP with each base station to the LMF.

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

Step 22001: The LMF calculates the geographic location information of the target terminal based on the RSTD and RSRP reported by the target terminal with each site.

Specifically, it is assumed that RSTD is 0 seconds, RSRP is assumed to be y watts (assuming that the distance corresponding to y watts is the radius of the ring, and the assumed radius is 200km), and the base station is assumed to be 50m high. RSRP limits the annular range of the target terminal to the base station, while RSTD limits the straight-line distance of the target terminal to the base station. That is to say, after the target terminal reports data for 0 seconds and y watts, the LMF can pass a simple sine and cosine function formula. The precise information of the original horizontal geographic location is calculated to be 200 km away from the base station, and the precise information of the original vertical geographic location is 50 m away from the ground.

For the situation of Mode 2 in the above situation 1, referring to FIG. 4 , the execution process of step 220 is as follows:

Step 22010: The target terminal obtains the geographic location information of the target terminal after performing calculation using the A-GNSS positioning function.

Specifically, A-GNSS provides assistance information, so that the GNSS receiver knows the frequency range that should be acquired before acquisition, and then the assistance data provides the geographic location information of the satellite used to calculate the geographic location information of the GNSS target terminal. After capturing the satellite signal, start to measure the pseudorange, and then the A-GNSS receiver starts to calculate the geographic location information of the target terminal. The precise information is 50m from the ground.

Step 22011: The target terminal reports the geographic location information of the target terminal to the LMF.

For the above situation 2, referring to FIG. 5, the execution process of step 220 is as follows:

Step 22020: The target terminal uses the positioning signal sent by the NTN to measure the RSTD with multiple sites, and calculates and obtains the geographic location information of the target terminal based on the obtained RSTDs.

Specifically, the target terminal measures the RSTDs between the target terminal and multiple base stations according to the downlink positioning signal sent by the NTN network, and then calculates the geographic location information of the target terminal according to these RSTDs. Assuming that the measured RSTDs are all 0 seconds, it can be inferred that the target terminal is located at the intersection of several rings, and the distance from the base station is the base station coverage radius. Assuming that the base station coverage radius is 200km, it can be calculated directly The precise information of the original horizontal geographic location is 200 km away from the base station, and the precise information of the original vertical geographic location is 50 m away from the ground.

Step 22021: The target terminal reports the geographic location 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 (eg, a service network element), which at least includes:

memory 601 for storing executable computer programs;

The processor 602, for reading the computer program in the memory, performs the following processes:

6, the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 602 and various circuits of memory represented by memory 601 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. A transceiver may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices 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 business level;

Location integrity requirements;

Optionally, the geographic location information of the target terminal is obtained after the AMF triggers the interaction between the LMF and the target terminal based on the positioning request message, and the processor 602 is used for any one of the following operations:

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

in,

The above-mentioned 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 above-mentioned embodiment, which will not be repeated here.

Based on the same inventive concept, referring to FIG. 7 , an embodiment of the present disclosure provides a network device (eg, AMF), which at least includes:

a memory 701 for storing executable computer programs;

The processor 702, for reading the computer program in the memory, performs the following processes:

Wherein, in FIG. 7 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 702 and various circuits of memory represented by memory 701 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. A transceiver may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices 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 business level;

Location integrity requirements;

Optionally, 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 positioning request message, and the Processor 702 is used to:

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

The above-mentioned memory 701 and the processor 702 cooperate with each other to implement any one of the methods performed by the AMF in steps 200 to 240 in the above-mentioned embodiment, which will not be repeated here.

Based on the same inventive concept, referring to FIG. 8 , an embodiment of the present disclosure provides a network device (eg, LMF), which at least includes:

a memory 801 for storing executable computer programs;

The processor 802, for reading the computer program in the memory, performs the following processes:

8, the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 802 and various circuits of memory represented by memory 801 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. A transceiver may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices 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 business level;

Location integrity requirements;

Optionally, based on the positioning request message, after interacting with the target terminal, the geographic location information of the target terminal is obtained, and the processor 802 is used for any one of the following operations:

Optionally, 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, and the processor 802 is configured to:

Wherein, the fuzzification processing includes:

The above-mentioned 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-mentioned embodiment, and details are not described herein again.

Based on the same inventive concept, an embodiment of the present disclosure provides a service network element, as shown in FIG. 9 , which at least includes: a sending unit 901 and a receiving unit 902, wherein,

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

The receiving unit 902 is configured to receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is the location management service entity LMF that the AMF triggers based on the location request message to communicate with the target terminal based on the location request message. obtained after terminal interaction.

The foregoing sending unit 901 and the receiving unit 902 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 embodiment, which will not be repeated here.

Based on the same inventive concept, an embodiment of the present disclosure provides an AMF, as shown in FIG. 10 , at least including: a first receiving unit 1001 , a first sending unit 1002 , a second receiving unit 1003 and a second sending 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 identification ID of a target terminal;

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

The second receiving unit 1003 is 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 positioning request message. of.

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

The above-mentioned first sending unit 1002 and the first receiving unit 1001 cooperate with each other, and the above-mentioned second sending unit 1004 and the second receiving unit 1003 cooperate with each other to implement any one of the methods performed by the AMF in steps 200 to 240 in the above-mentioned embodiment. , and will not be repeated here.

Based on the same inventive concept, an embodiment of the present disclosure provides an LMF, as shown in FIG. 11 , at least including: 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 the 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 the terminal identification ID of the 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;

The sending unit 1103 is 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 performed by the LMF in steps 200 to 240 in the foregoing embodiment, which will not be repeated here.

Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium, which, when an instruction in the storage medium is executed by a processor, enables the processor to execute any one of the execution of the service network element in the above process method.

Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium, when the instructions in the storage medium are executed by a processor, the processor can execute any one of the methods performed by the AMF in the above process.

Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium, when the instructions in the storage medium are executed by a processor, the processor can execute any one of the methods performed by the LMF in the above process.

To sum up, in the embodiment of the present disclosure, the serving network element sends a positioning request message to the AMF, and the positioning request message carries at least the terminal ID of the target terminal; the AMF sends the positioning request message to the LMF, and the LMF and the The target terminal obtains the geographic location information of the target terminal after interaction, the LMF sends the geographic location information of the target terminal to the AMF, and the AMF sends the geographic location information of the target terminal to the service network element. In this way, the serving network element can successfully obtain the geographic location information of the target terminal, thereby greatly reducing the round-trip delay in the process of interacting with the target terminal, thereby effectively improving the message response speed, and improving random access and handover. The success rate and QoS satisfaction also make 5G and NTN networks more closely integrated.

On the other hand, on the premise of not affecting the business services used by the target terminal, the AMF fuzzes the geographic location information of the target terminal, so as to avoid leakage of the privacy of the target terminal.

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, etc.) 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 in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

While the preferred embodiments of the present disclosure have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are appreciated. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present disclosure.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, provided that these 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 cover such modifications and variations.

Claims

A method for obtaining geographic location information of a terminal, characterized in that, applied to a service network element, comprising:

sending a positioning request message to the authentication management function entity AMF, where the positioning request message at least carries the terminal identification ID of the target terminal;

Receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is obtained after the AMF triggers the location management service entity LMF to interact with the target terminal based on the location request message.
The method of claim 1, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.
The method according to claim 1 or 2, wherein the geographic location information of the target terminal is obtained after the AMF triggers the LMF to interact with the target terminal based on the positioning request message, including any one of the following operations:

Trigger the LMF to perform the following operations: calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

Triggering the LMF to perform the following operations: receiving geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the Assisted Global Navigation Satellite System A-GNSS positioning function to perform calculations;

Trigger the LMF to perform the following operations: receive geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using a non-terrestrial communication network NTN, measure the distance between the target terminal and multiple serving network elements After the RSTD is obtained, it is calculated based on the obtained individual RSTD.
The method according to claim 1 or 2, wherein receiving the geographic location information of the target terminal returned by the AMF comprises:

receiving the obfuscated geographic location information of the target terminal returned by the AMF;

in,

The target horizontal geographic location included in the geographic location information of the target terminal is generated by adding a value within the first preset value interval to the original horizontal geographic location included in the geographic location information;

The target vertical geographic location included in the geographic location information of the target terminal is generated by adding a value within the second preset value interval to the original vertical geographic location included in the geographic location information.
A method for obtaining geographic location information of a terminal, characterized in that, applied to an authentication management function entity AMF, comprising:

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

sending the location request message to the location management service entity LMF;

receiving 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 positioning request message;

Sending the geographic location information of the target terminal to the serving network element.
The method of claim 5, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.
The method according to claim 5 or 6, wherein the geographic location information of the target terminal returned by the LMF is received, and the geographic location information of the target terminal is the same as the location request message of the LMF based on the location request message. What is obtained after the interaction of the target terminal includes:

Receive the geographic location information of the target terminal returned by the LMF, where the geographic location information of the target terminal is obtained by adopting any one of the following operations:

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

The target terminal is obtained after calculation using the auxiliary global navigation satellite system A-GNSS positioning function;

The target terminal adopts the positioning signal sent by the non-terrestrial communication network NTN, and after measuring the RSTD with multiple serving network elements, it is calculated and obtained based on the obtained RSTDs.
The method according to claim 5 or 6, wherein sending the geographic location information to the serving network element comprises:

After the geographic location information is fuzzed, it is sent to the serving network element, where the fuzzification includes:

On the original horizontal geographic location included in the geographic location information, a value within the first preset value interval is added to generate a corresponding target horizontal geographic location;

To the original vertical geographic location included in the geographic location information, a value within the second preset value interval is added to generate a corresponding target vertical geographic location.
A method for obtaining geographic location information of a terminal, characterized in that, applied to a location management service entity LMF, comprising:

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

Based on the positioning request message, after interacting with the target terminal, obtain geographic location information of the target terminal;

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 method of claim 9, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

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

Calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

receiving the geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the assisted global navigation satellite system A-GNSS positioning function to perform calculation;

Receive the geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using the non-terrestrial communication network NTN, after measuring the RSTD with multiple serving network elements, based on the obtained obtained by RSTD calculation.
The method according to claim 9 or 10, wherein the geographic location information of the target terminal is sent to the AMF, and the AMF is made to send the geographic location information of the target terminal to the serving network element ,include:

sending the geographic location information of the target terminal to the AMF, so that the AMF fuzzifies the geographic location information of the target terminal and sends it to the serving network element;

Wherein, the fuzzification processing includes:

On the original horizontal geographic location included in the geographic location information, a value within the first preset value interval is added to generate a corresponding target horizontal geographic location;

To the original vertical geographic location included in the geographic location information, a value within the second preset value interval is added to generate a corresponding target vertical geographic location.
A service network element, characterized in that it includes:

memory for storing executable computer programs;

The processor, for reading the computer program in the memory, performs the following processes:

sending a positioning request message to the authentication management function entity AMF, where the positioning request message at least carries the terminal identification ID of the target terminal;

Receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is obtained after the AMF triggers the location management service entity LMF to interact with the target terminal based on the location request message.
The service network element according to claim 13, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.
The service network element according to claim 13 or 14, wherein the geographic location information of the target terminal is obtained after the AMF triggers the interaction between the LMF and the target terminal based on the positioning request message, and the The processor is used for any of the following operations:

Trigger the LMF to perform the following operations: calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

Triggering the LMF to perform the following operations: receiving geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the Assisted Global Navigation Satellite System A-GNSS positioning function to perform calculations;

Trigger the LMF to perform the following operations: receive geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using a non-terrestrial communication network NTN, measure the distance between the target terminal and multiple serving network elements After the RSTD is obtained, it is calculated based on the obtained individual RSTD.
The service network element according to claim 13 or 14, wherein, after receiving the geographic location information of the target terminal returned by the AMF, the processor is configured to:

receiving the obfuscated geographic location information of the target terminal returned by the AMF;

in,

The target horizontal geographic location included in the geographic location information of the target terminal is generated by adding a value within the first preset value interval to the original horizontal geographic location included in the geographic location information;

The target vertical geographic location included in the geographic location information of the target terminal is generated by adding a value within the second preset value interval to the original vertical geographic location included in the geographic location information.
A kind of authentication management function entity AMF, is characterized in that, comprises:

memory for storing executable computer programs;

The processor, for reading the computer program in the memory, performs the following processes:

Receive, through the transceiver, a positioning request message sent by the serving network element, where the positioning request message at least carries the terminal identification ID of the target terminal;

sending the location request message to the location management service entity LMF;

receiving 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 positioning request message;

Sending the geographic location information of the target terminal to the serving network element.
The AMF of claim 17, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.
The AMF according to claim 17 or 18, characterized in that, receiving the geographic location information of the target terminal returned by the LMF, the geographic location information of the target terminal being the LMF based on the location request message, and obtained after the interaction of the target terminal, the processor is used for:

Receive the geographic location information of the target terminal returned by the LMF, where the geographic location information of the target terminal is obtained by adopting any one of the following operations:

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

The target terminal is obtained after calculation using the auxiliary global navigation satellite system A-GNSS positioning function;

The target terminal adopts the positioning signal sent by the non-terrestrial communication network NTN, and after measuring the RSTD with multiple serving network elements, it is calculated and obtained based on the obtained RSTDs.
The AMF according to claim 17 or 18, wherein the processor is configured to: send the geographic location information to the serving network element:

After the geographic location information is fuzzed, it is sent to the serving network element, where the fuzzification includes:

On the original horizontal geographic location included in the geographic location information, a value within the first preset value interval is added to generate a corresponding target horizontal geographic location;

To the original vertical geographic location included in the geographic location information, a value within the second preset value interval is added to generate a corresponding target vertical geographic location.
A location management service entity LMF, characterized in that it includes:

memory for storing executable computer programs;

The processor, for reading the computer program in the memory, performs the following processes:

Receive, through the transceiver, a positioning request message sent by the authentication management function entity AMF, where the positioning request message is sent by the serving network element, and the positioning request message at least carries the terminal identification ID of the target terminal;

Based on the positioning request message, after interacting with the target terminal, obtain geographic location information of the target terminal;

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 LMF of claim 21, wherein the positioning request message further carries any one or any combination of the following information:

Positioning business level;

Position accuracy requirements, which include position accuracy and response time;

Location integrity requirements;

The trigger type of the positioning request message is an access network request;

The positioning request message sent by the terminal is sent periodically or triggered by an event;

The geographic location information of the target terminal is reported periodically or triggered by an event;

the reporting period of the geographic location information of the target terminal;

The number of reported samples of the geographic location information of the target terminal.
The LMF according to claim 21 or 22, wherein, based on the positioning request message, after interacting with the target terminal, the geographic position information of the target terminal is obtained, and the processor is used for any one of the following operations:

Calculate and obtain the geographic location information of the target terminal based on the reference signal time difference RSTD and the reference signal received power RSRP reported by the target terminal and each serving network element;

receiving the geographic location information reported by the target terminal, where the geographic location information is obtained by the target terminal using the assisted global navigation satellite system A-GNSS positioning function to perform calculation;

Receive the geographic location information reported by the target terminal, where the geographic location information is a positioning signal sent by the target terminal using the non-terrestrial communication network NTN, after measuring the RSTD with multiple serving network elements, based on the obtained obtained by RSTD calculation.
The LMF according to claim 21 or 22, wherein 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 , the processor is used to:

sending the geographic location information of the target terminal to the AMF, so that the AMF fuzzifies the geographic location information of the target terminal and sends it to the serving network element;

Wherein, the fuzzification processing includes:

On the original horizontal geographic location included in the geographic location information, a value within the first preset value interval is added to generate a corresponding target horizontal geographic location;

To the original vertical geographic location included in the geographic location information, a value within the second preset value interval is added to generate a corresponding target vertical geographic location.
A device for obtaining geographic location information of a terminal, characterized in that, applied to a service network element, comprising:

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

A receiving unit, configured to receive the geographic location information of the target terminal returned by the AMF, where the geographic location information of the target terminal is that the AMF triggers the location management service entity LMF and the target terminal based on the location request message obtained after interaction.
A device for obtaining geographic location information of a terminal, characterized in that, applied to an authentication management function entity AMF, comprising:

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

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

The second receiving unit is 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 positioning request message ;

The second sending unit is configured to send the geographic location information of the target terminal to the serving network element.
A device for obtaining geographic location information of a terminal, characterized in that, being applied to the location management service entity LMF comprises:

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

a processing unit, 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, 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 computer-readable storage medium, characterized in that, when the instructions in the storage medium are executed by a processor, the processor can perform the method according to any one of claims 1-12.