CN1522085A - A position positioning system and method - Google Patents

Abstract

The invention relates to a system and a method for realizing the location request of the LCS system on the existing circuit domain service. The system includes a wireless communication network, a Gateway Mobile Location Center (GMLC) and a geographic location service system, and also includes a location service server; the method includes: a. the terminal user initiates a location service request to the wireless communication network; b. the wireless communication network will The service request is sent to the location service server; c. The location service server assembles the user's request information into a location service request message and sends it to the GMLC, requesting the GMLC to locate the target user; d. The GMLC locates the target user; e. The positioning result is returned to the terminal user who initiated the request, and the user position positioning service is ended. The present invention solves the problem of compatibility between the LCS system and the terminals that do not support high-speed data services and directly send location requests to the network, increases the flexibility of using location services for users, and is beneficial to the business development of operators.

Description

A position positioning system and method

technical field

The present invention relates to network positioning technology, in particular to a system and method for realizing location request of LCS system on existing circuit domain service.

technical background

First introduce the LCS location service:

The LCS (Location service) of the mobile communication network is to obtain the location information of the target UE user (which can be longitude and latitude information or the location of the local street, etc.) through a certain technology, and provide the location information to the target UE user himself (for Self-location), or the communication system itself (for sub-area billing or operator operation and maintenance functions), or provided to other institutions and individuals who request the user's location (for value-added services). Therefore, location services are widely used in emergency rescue, vehicle navigation and intelligent transportation systems, work scheduling and team management, mobile yellow page query, and enhanced network performance. TS (Technical Specification, technical specification) 22.071 of 3GPP (Third Generation Partnership Project) defines the business specification of LCS, and TS 23.271 defines the functional mode, system structure, status description and message flow of the entire LCS system etc.

From the perspective of functional logic, the LCS system is composed of several functional logic modules including the requester, the LCS client, the gateway mobile positioning center GMLC, the geographic location service system, the 3GPP network, and the target UE. The functional logic structure of the entire LCS system is shown in Figure 1 :

Among them, the functions of each logic module in the 3GPP LCS system are as follows:

Requester: The organization, institution or individual that requests the location information of the target UE from the LCS system through the LCS client is the initiator of the positioning request. For a certain user, it can be both the target UE user and the requester at the same time.

LCS Client: A software or hardware entity interfacing with the LCS system for obtaining user location information of one or more target UEs.

Mobile Gateway Location Center GMLC: GMLC provides a standard location service interface for the LCS client, responsible for authenticating the LCS client and authenticating the location service request message sent by the LCS client, and requesting the 3GPP network to locate the target The UE performs positioning, and can request the geographic location service system to convert the format of the location information returned by the 3GPP network as needed, such as requesting the geographic location service system to translate the longitude and latitude location information of the target UE returned by the 3GPP network into local geographic information. The GMLC is responsible for returning the location information of the final target UE to the LCS client.

Geographic location service system (GLSS): responsible for processing the location information conversion request of the gateway mobile positioning center, and returning the location information format that meets the requirements.

3GPP network: responsible for receiving and managing the request information of the mobile gateway positioning center, and determining the positioning method according to the QoS (quality of service) of the positioning request, completing the positioning of the target UE, and finally responsible for returning the positioning result to the mobile network positioning center; in addition, when the target When the UE directly sends a location request for locating its own location information to the 3GPP network, the 3GPP network directly locates the target UE and returns the location information.

Target UE (User Equipment, user equipment): refers to the target user terminal located in the mobile communication network.

The 3GPP LCS specification defines the implementation process of the location request as shown in Figure 2 and Figure 3:

As shown in Figure 2, the process of the requester requesting the location information of the target UE from the LCS system includes the following steps:

1. The requester sends a location request for locating the target UE to the LCS client;

2. The LCS client forwards the location service request message to the GMLC;

3. The GMLC authenticates the LCS client and the location service request message, and sends a location request to the 3GPP network after successful authentication;

4. The 3GPP network locates the target UE after receiving the positioning request;

5. The 3GPP network returns the positioning result of the target UE to the GMLC;

6. GMLC initiates a location information conversion request message to GLSS according to the requester's needs, and requests GLSS to convert the location information of the target UE in a corresponding format;

7. After the GLSS conversion is completed, return the position information conversion response to the GMLC;

8. The GMLC returns a location service response to the LCS client;

9. The LCS client forwards the location response to the requester;

In addition to the target UE requesting its own location information through the LCS client as a common requester, the LCS specification also defines a positioning method in which the target UE can directly request the location information from the network. As shown in Figure 3, the process of the target UE requesting its own location information from the LCS system includes the following steps:

1. After the target UE establishes a wireless connection with the network, it directly initiates a location request message to the 3GPP network;

2. The 3GPP network authenticates the location request of the target UE, and performs corresponding positioning operations after successful authentication;

3. After the positioning is completed, the 3GPP network returns the positioning result to the target UE;

4. As an option, when the target UE sends a location request to the 3GPP network, it can request the 3GPP network to send its own location information to an external client, and at this time, the 3GPP network forwards a location response to the corresponding GMLC;

5. After receiving the location response message, the GMLC sends a received location information reception response message to the 3GPP network;

6. GMLC sends a location information conversion request to GLSS as needed, requesting GLSS to convert the location information of the target UE into a corresponding format;

7. After the GLSS conversion is completed, return the position information conversion response to the GMLC;

8. The GMLC sends the location information of the target UE to the external client;

9. After receiving the location information reception response message sent by the GMLC, the 3GPP sends a location response to the target UE, including a confirmation indication that the network has sent the location information of the target UE to the external client.

Existing issues:

Several positioning methods defined in the current 3GPP specifications are suitable for user terminals that can perform high-speed data services and can directly send location requests to the network. For user terminals that cannot perform high-speed data services and do not support directly sending location requests to the network, such as Ordinary GSM terminals use the LCS system positioning function is not very suitable, when an ordinary GSM terminal as a requester initiates the positioning of the target UE through the LCS system, it needs to establish a connection with the LCS client first, and then through the interaction with the LCS client For positioning requests, ordinary GSM terminals are limited by the data flow to establish data connections and interactive operations with LCS clients due to their own technical reasons, the system responds slowly and users are inconvenient to operate; When requesting its own location information, because the ordinary GSM terminal cannot support sending a location request message to the 3GPP network, the operation cannot be performed at this time. Therefore, it is necessary to propose a processing method for using the location service of the LCS system on a user terminal that does not support high-speed data services and does not support directly sending location requests to the network using the existing circuit domain service bearer method to realize location services. Compatibility for such end users.

Contents of the invention

The purpose of this patent is to provide a system for realizing position positioning by using existing circuit domain services and a method for realizing position positioning based on the above system; so that users who do not support high-speed data services and do not support directly sending position requests to the network The terminal user can use the existing service bearer mode in the CS domain to request the location.

The position positioning system of the present invention includes a wireless communication network, a gateway mobile positioning center (GMLC) and a geographic location service system; the wireless communication network receives and transmits the request of the requester, receives the positioning request of the gateway mobile positioning center, and After the target terminal locates, it returns the location information of the target terminal to the gateway mobile positioning center, and the gateway mobile positioning center requests the geographic location service system to convert the format of the location information returned by the wireless communication network and returns it to the requester;

It is characterized in that the positioning system also includes a location service server, the location service server receives the service request of the wireless communication network and authenticates the requesting user, and assembles the corresponding service request information into a location service request message and sends it to the gateway Mobile location center.

The location service server includes: a service access module, a service management module and an information processing module;

The service access module performs access processing on the service request sent by the wireless communication network, and initiates an authentication request for the user to the service management module;

The service management module controls and manages the service logic of various applications, authenticates the user's service use according to the authentication message requested by the service access module, and performs corresponding processing according to the service requested by the user;

The information processing module receives the instruction assembly location service request message from the service management module and sends it to the GMLC, and receives the location information returned by the GMLC.

The position positioning method of the present invention is characterized in that comprising the following steps:

a. The end user requester initiates a location service request to the wireless communication network;

b. The wireless communication network sends the service request to the location service server;

c. The location service server assembles the user's request information into a location service request message and sends it to the GMLC, requesting the GMLC to locate the target user;

d. GMLC locates the target user;

e. The positioning result is returned to the requesting terminal user, and the user position positioning service is terminated.

Described step a, the initiation of this service can be finished by the mode of calling, also can be finished by the mode of short message, can also be finished by the mode of USSD (Unstructured Supplementary Service Data unstructured supplementary service data).

Described step c, further comprises the steps:

c1: The location service server authenticates the legality of service use on the terminal that initiates the service.

Described step c further comprises steps:

c2: Return a service response message to the network. If the authentication fails, the terminal user's request will be rejected in the response message. If the authentication is successful, the network service will be notified in the response message to continue.

Described step c further comprises steps:

c3: The location service server further collects the service request information of the end user requester.

In the step c, the location service request message includes the required quality of service of the positioning result and the format of the returned information.

Described step d further comprises steps:

d1: GMLC authenticates the request information and the location service server, and locates the target user if the authentication passes.

In step e, the GMLC may return the positioning result to the location service server, and the location service server may return the result to the location service requester, or the GMLC may return the result to the location service requester.

Through the method of the present invention, the terminal user requester can send a positioning request to the network by using the existing circuit domain service bearer methods such as call, short message or USSD, and finally the location service server will use the service request information of the terminal user requester and The service logic assembles the location service request message and sends it to the GMLC. In this way, the existing circuit domain service request of the end user requester is converted into the location service request message sent to the GMLC through the processing of the location service server, so that high-speed data transmission is not supported. Business and terminal users who do not support sending location requests to the network, such as ordinary GSM terminal users, can also use location services conveniently and enjoy the services provided by various service location services, which solves the compatibility problem between the LCS system and such terminals.

In addition, according to the present invention, terminals (such as 3G terminals) that support high-speed data services and directly send location requests to the network can also use the existing circuit domain service bearing method to send location requests to the network. It provides users with the possibility of using the traditional circuit domain service request mode to request location services, which enriches the way for 3G terminal users to send location requests to the network, increases the flexibility for users to use location services, and is beneficial to Carrier business development.

Description of drawings

FIG. 1 is a logical structure diagram of the LCS system of the prior art 3GPP;

Fig. 2 is a flow chart of realizing the target user location request defined in the LCS specification;

Fig. 3 is a location request implementation process of the target user requesting its own location information flow chart defined in the LCS specification;

Fig. 4 is a logical structural diagram of the user location positioning system of the present invention;

Fig. 5 is a schematic flow diagram of a user location positioning request according to the present invention;

Fig. 6 is a network structure diagram of an embodiment of the present invention.

Detailed ways

The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

According to the present invention, the network system that can be compatible with the user terminal that does not support high-speed data services and does not support directly sending location requests to the network uses the existing service bearer mode in the circuit domain to request location is mainly composed of end user requesters, wireless It is composed of several logical entities such as communication network, location service server, GMLC and geographic location service system, and its logical structure diagram is shown in Figure 4.

Compared with 3GPP's LCS system network logic entity, a location service server with service access function, service management function and information request function is added. For a network that is compatible with the existing service bearing mode in the circuit domain to perform location request Each logical entity in the system is described as follows:

End user requester: An ordinary end user who requests the location information of the target user from the LCS system through the LCS client, which can be a GSM user, a CDMA user, or an end user composed of other communication networks. The originator of the request, for the end user, the requester itself can be the target end user to be located or the requester for the location information at the same time.

Wireless communication network: It can identify the special number called by ordinary terminals, or the short message sent to the specified address, or the specific USSD command sent, and can send these special requests to the corresponding location according to certain rules The service server can perform subsequent operations according to the instruction of the location service server, and can provide relevant data of the user to the location service server. Furthermore, the wireless communication network can also interact with the user according to the instruction of the location service server, collect user information and report the collection result to the location service server. In addition, the wireless network can also receive the location information processing request from the location service server and GMLC, and select an appropriate method to return the location information to the requester according to the requirements in the request.

Location service server: The location service server, as an LCS client of the GMLC, sends a location service request message to the GMLC. The location service server can be divided into three functional modules, a service access module, a service management module and an information request collection module.

Service access module: As the interface module between the network and the location service server, it can perform access processing on service requests sent by the wireless network, such as processing calls triggered by the network, sending short messages and USSD commands, and requesting corresponding services The management module authenticates the user. The service access module can further collect the user's request information from the network or interact with the user through the network according to the instruction of the service management module. Finally, the service access module returns the final location information to the network and informs the network to send it to the user in a certain way according to the instruction of the service management module.

Business management module: As the core processing module of the location service server, it loads, controls and manages the business logic of various applications. On the one hand, the business management module can process the authentication message requested by the service access Validate legality. And it can instruct the service access module to collect further request information from the network or users according to the business logic. On the other hand, the service management module sends the collected information to the information processing module, instructs the information processing module to assemble the corresponding location service request message and send it to the GMLC send. Finally, the service management module sends the location information returned by the information processing module to the service access module, instructing the service access module to notify the network of how to send the final location information to the user.

Information processing module: As an interface module between the location service server and GMLC, it receives instructions from the service management module to assemble a corresponding location service request message and sends it to the GMLC, and receives the location information returned by the GMLC and forwards it to the service management module; further, information processing The module can also request the geographic location information system to convert the location information into a format before forwarding it to the business management module.

Regarding the specific implementation of the above location service server, the following examples can be given, for example, a mobile communication intelligence integrated with SMF (service management function), SDF (service data function), SCEF (service creation environment function) and SCF (service control function) functions The SCP (Service Control Point) in the network can be used as a location service server. The SCF and SDF logical entities in the SCP correspond to the service access module in the location service server, the SMF and SCEF logical entities in the SCP correspond to the service management module in the location service server, and the SCF and SDF logical entities in the SCP also correspond to The information processing module in the location service server.

Mobile Gateway Location Center GMLC: GMLC provides a standard location service interface for the LCS client, responsible for authenticating the LCS client and authenticating the request of the LCS client, requesting the wireless network to locate the target terminal, and can According to the request instruction of the location service server, request the geographic location service system to convert the format of the location information returned by the network, such as requesting the geographic location service system to translate the longitude and latitude location information of the target terminal returned by the network into local geographic information. Finally, the GMLC is responsible for returning the location information of the target terminal to the LCS client, or requesting the network to return the location information of the target terminal to the requester in a certain way according to the instruction of the location service server.

Geographic location service system GLSS: responsible for processing the location information conversion request of the gateway mobile positioning center, and returning the location information format that meets the requirements.

Based on the design of the above-mentioned network structure, the method for locating the position of the terminal user of the present invention includes the following steps:

a. After establishing a wireless connection with the network, the end user requester dials a special number, or sends a short message with a specific meaning to a specified address, or uses a specific USSD command to send a service request message to the network. The service request indicates or implicitly indicates that the user requests the network to accurately locate itself or other terminals;

b. The wireless communication network sends a service request message to the location service server according to the end user requester dialing a special number, or the sending address of the short message, or a specific USSD command, and requests the location service server for subsequent operation instructions;

c. The location service server judges the corresponding service requested by the end user requester according to the special number in the service request message sent by the wireless network, or a short message with a specific meaning, or a specific USSD command, and can further perform the request on the end user requester Authentication, to determine whether the user can use the service;

After the authentication by the location service server, the service response message is returned to the network; if the authentication fails, the user's request is rejected in the response message, otherwise, the network service is notified in the response message that the service will continue.

The location service server can further request user-related information from the network according to the needs of the service logic; and can obtain more detailed request information of the user through service interaction with the user through the network. For example, the location service server instructs the network to deliver corresponding voice prompts or information prompts to users, and collect feedback information from users. This step is optional;

After the location service server collects enough request information from the end user requester, it sends a location service request message to the GMLC. At this time, the location service server can be regarded as an ordinary LCS client sending a location service request message to the GMLC. It can include the Qos of the required positioning result and the format of the returned location information.

d. After the GMLC receives the location information, it can further authenticate the location service request information to identify whether the user has the authority to initiate a positioning request to the target terminal; in addition, the GMLC can also further authenticate the location service server to identify the location Whether the business server is a legal client of the end user requester. If the GMLC authentication fails, the location service request of the location service server is rejected, and the location service server performs subsequent processing according to the business logic at this time; if the GMLC authentication succeeds, a location request is sent to the network;

The network selects the corresponding positioning method according to the QoS in the positioning request message of the GMLC, measures and calculates the location information of the target user, and returns the location information of the target user to the GMLC in a standard format after the positioning is completed;

e. The process of returning location information:

In this step, the system can use two methods to return the location result to the end user requester. The location service server can specify the format of the location information return in the location service request message sent to the GMLC, and the GMLC will send the location information to the geographic location service system. Location information conversion request;

The geographic location service system converts the corresponding format of the location information and returns the converted result to the GMLC.

The GMLC returns a location service response message to the location service server, carrying the corresponding positioning result;

According to the business logic, the location service server requests the network to return the location information to the terminal user requester in an appropriate way.

The network returns the final location information to the end-user requester in a specified manner.

Method 2:

The location service server can specify the format of the location information return and the way the location information is returned to the requester in the location service request message sent to the GMLC, then the GMLC sends a location information conversion request to the geographic location service system;

The geographic location service system converts the corresponding format of the location information and returns the converted result to the GMLC.

After receiving the location result converted by the geographic location service system, GMLC directly requests the network to return the location information to the end user requester in a specified way;

The network returns the final location information to the end-user requester in a specified manner.

As shown in FIG. 5 , it is a detailed flowchart of the above steps.

Look at several specific examples below:

Example 1:

For an end user requester to initiate a positioning request by means of a call, the conversion of the requester's positioning request can be realized through the intelligent network architecture. Taking the GSM network as an example, MSC/SSP (Mobile Switching Center/Service Switching Point) can trigger the call to the corresponding location server, such as SCP (Service Control Point), according to the special number dialed by the GSM terminal user requester. The service request information and service logic generate a corresponding location service request message and send it to the GMLC. Its network logic structure diagram is shown in Figure 6, wherein the SCP is the location service server referred to in the technical solution of the present invention.

In practical applications, the GSM terminal user requester signs a contract in the SCP in advance, and registers that he needs to use certain location request services (for example, registering an 888 service: dialing 888+mobile phone number will return the geographical location of the mobile phone number to the network. Location information), in addition, the requester can authorize the SCP in the GMLC as needed, allowing the SCP to request the LCS client as its own location. When the user dials 888+ mobile phone number, the MSC/SSP triggers the smart service to the SCP according to the dialed number prefix of 888. After receiving the request, the SCP authenticates the user according to the 888 service and checks whether the user has signed the contract. business. Wherein, the SCP may interact with the HLR to request user-related information as required. If the SCP finds the location information of other terminals requested by the user, the SCP can instruct the MSC/SSP to play a prompt voice to the user, obtain the user's relevant authentication information (such as authentication password) for locating other terminals, and after the authentication is passed, the SCP sends a notification to the corresponding The GMLC sends a location service request message, and the request carries the identifier of the requester (such as the calling party number), the authentication password, the target user identifier, the format of the location information to be returned (such as the local geographic location information), and other information, and the GMLC receives After receiving the request message from the SCP, it can further authenticate the location service request message, and can also authenticate whether the SCP can be used as the LCS client of the end user requester to request the legitimacy of the location of the target user. After the authentication is passed, the location The service system requests MSC/SSP to initiate the positioning of the target user, and the MSC/SSP obtains the location information (latitude and longitude information) of the target user through the positioning technology of the BSS (Base Station Subsystem) and returns it to the SCP, and the SCP requests the geographic location according to the business logic The service system converts the format of the location information returned by MSC/SSP (such as converting into local street information), and finally, the SCP generates a short message according to the business logic and sends it to the short message service center SMSC. A short message carrying the positioning result is sent to the end user requester.

Example 2:

The terminal user requester can also use the short message as the bearing mode to initiate a positioning request to the network. The requester edits a short message with a specific meaning and sends it to the specified address, such as sending 9999 to Location+13912340001, indicating that the request network locates the user terminal with the number 13912340001. At this time, the short message center forwards the user request information to a location service server according to the sent address, and the location service server judges that the requester requests the network to locate the 13912340001 terminal according to the Loation command word, and then the request can be initiated according to the service logic The authentication process of the requester, such as sending a password request short message to the requester, requesting the user to enter the permission password for accessing the location of the target terminal user; after the location service server authenticates the requester successfully, it can also send the requester Send an information request short message, requesting the requester to input the positioning type (immediate or delayed), as well as the positioning accuracy and Qos parameters that need to be returned by the network, and the location service server judges according to the positioning accuracy and Qos parameters fed back by the requester based on the positioning capability of the network Whether the network can support the service request of the requester, if not, it can further negotiate with the requester on positioning accuracy and Qos parameter reduction according to the business logic. Finally, after collecting enough information, the location service server assembles the corresponding location service request message and sends it to GMLC, edits the location result returned by GMLC into a short message and sends it to the short message center, and finally the short message center will carry the location result A short message is sent to the end user requester.

Example 3:

The end user requester can also use the USSD command as a bearer to initiate a positioning request to the network. The end user requester edits a USSD command with a specific meaning, such as *#111#13912340001# and sends it to the network. At this time, the USSD center judges that the requester requests the network to locate the terminal of 13912340001 according to the USSD command. After the authorization is successful, the relevant USSD command can be sent to the requester according to the business logic, such as sending the positioning guide menu to the requester to further obtain the requester's request information. After the requester terminal downloads the positioning guide menu, the requester can follow the The positioning wizard menu prompts to operate step by step, such as entering relevant password information and so on. After collecting enough information, the USSD center assembles a location request message and sends it to GMLC, edits the location information returned by GMLC into a short message and sends it to the short message center, and finally the short message center sends the short message carrying the location result to the terminal User Requester.

The present invention discloses a system and a method for implementing a location request for user terminals that do not support high-speed data services and directly send location requests to the network by adding a location service server in the network using the existing service bearing mode of the circuit domain , using this method, for end users who do not support high-speed data services and do not support sending location requests directly to the network, they can use the existing service bearing methods in the circuit domain, such as voice, short message and USSD commands, to make location requests and enjoy various The service provided by this kind of location business solves the problem of compatibility between the LCS system and this kind of terminal. In addition, by using the present invention, for terminal users (such as 3G terminal users) who support high-speed data services or directly send location requests to the network, they can also use the traditional circuit domain service bearing method to perform location requests, which enriches the 3G terminal users' ability to perform location requests. The method of location request increases the flexibility of users to use location services, which is conducive to the development of operators' services.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A position positioning system, comprising a wireless communication network, a gateway mobile positioning center (GMLC) and a geographic location service system; the wireless communication network receives and transmits the request of the requester, receives the positioning request of the gateway mobile positioning center, and After locating the target terminal, return the location information of the target terminal to the gateway mobile positioning center, and the gateway mobile positioning center requests the geographic location service system to convert the format of the location information returned by the wireless communication network and return it to the requester; It is characterized in that the positioning system also includes a location service server, the location service server receives the service request of the wireless communication network and authenticates the requesting user, and assembles the corresponding service request information into a location service request message and sends it to the gateway Mobile location center. 2. The location positioning system according to claim 1, wherein the location service server includes: a service access module, a service management module and an information processing module; The service access module performs access processing on the service request sent by the wireless communication network, and initiates an authentication request for the user to the service management module; The service management module controls and manages the service logic of various applications, authenticates the user's service use according to the authentication message requested by the service access module, and performs corresponding processing according to the service requested by the user; The information processing module receives the instruction assembly location service request message from the service management module and sends it to the GMLC, and receives the location information returned by the GMLC. 3. A position positioning method, characterized in that it comprises the following steps: a. The end user requester initiates a location service request to the wireless communication network; b. The wireless communication network sends the service request to the location service server; c. The location service server assembles the user's request information into a location service request message and sends it to the GMLC, requesting the GMLC to locate the target user; d. GMLC locates the target user; e. The positioning result is returned to the requesting terminal user, and the user position positioning service is terminated. 4. The location positioning method according to claim 3, characterized in that in step a, the initiation of the service can be completed by calling, or by a short message, or by USSD ( Unstructured Supplementary Service Data Unstructured Supplementary Service Data) way to complete. 5. The position positioning method according to claim 3, characterized in that said step c further comprises the steps of: c1: The location service server authenticates the legality of service use on the terminal that initiates the service. 6. The position positioning method according to claim 5, characterized in that said step c further comprises the steps of: c2: Return a service response message to the network. If the authentication fails, the terminal user's request will be rejected in the response message. If the authentication is successful, the network service will be notified in the response message to continue. 7. The position positioning method according to claim 3, characterized in that said step c further comprises the steps of: c3: The location service server further collects the service request information of the end user requester. 8. The location positioning method according to claim 3, characterized in that in the step c, the location service request message includes the required quality of service of the positioning result and the format of the returned information. 9. The position positioning method according to claim 3, characterized in that said step d further comprises the steps of: d1: GMLC authenticates the request information and the location service server, and locates the target user if the authentication passes. 10. The location positioning method according to claim 3, characterized in that in step e, the GMLC may return the positioning result to the location service server, and the location service server may return the result to the location service requester, or it may be provided by The GMLC returns the result to the location service requester.

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