WO2008092392A1

WO2008092392A1 - A method, apparatus and system for providing location service

Info

Publication number: WO2008092392A1
Application number: PCT/CN2008/070040
Authority: WO
Inventors: Yong Xie
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-01-26
Filing date: 2008-01-08
Publication date: 2008-08-07
Also published as: CN101232700A; CN101232700B

Abstract

A method for providing location service in worldwide interoperability for microwave access system is provided. The method includes: sending the first request message for acquiring the physical location of a target terminal from the locating client to the locating server in the visit network where the target terminal is; sending the second request message for acquiring the physical location of the target terminal from the locating server to the locating control function entity where the target terminal is according to the routing information; performing the locating operation on the target terminal by the locating control function entity, and returning the locating result to the side of the locating client. The embodiments of the present invention are mainly applied in the worldwide interoperability for microwave access system.

Description

Method, device and system for providing location service

The present invention relates to the field of communications, and more particularly to physical positioning techniques in a global access microwave interoperability system.

Background technique

Worldwide Interoperability for Microwave Access (WiMAX) is a wireless metropolitan area network technology based on the IEEE 802.16 standard. Referring to FIG. 1, the WiMAX network is mainly composed of three parts, namely, a mobile subscriber station (Mobile Subscribe Station, MS/MSS), an access service network (ASN), and a connection service network (CSN). The access service network (ASN) includes a base station (BS) and an access service network gateway (Access Service Network GateWay, ASN-GW), and the connection service network (CSN) includes a prepaid server (Pre-Paid Server). , PPS) and Authentication/Authorization/Accounting (AAA) and other entities.

The access service network (ASN) is mainly used to ensure establishment of a layer 2 (LB) connection between a user terminal (MS/MSS) in a WiMAX network and a base station (BS) in a WiMAX network; radio resource management; network discovery And the optimal choice of the network service provider (ASP Network); acting as a proxy server to control the authentication, authorization, and accounting messages of the MS in the proxy mobile IP mode; and providing relay for the establishment of the Layer 3 (L3) application connection of the MS .

The connection service network (CSN) is mainly used for assigning an IP address to an MS for performing a network session; providing Internet Internet access; acting as an authentication and authorization charging proxy server or an authentication and authorization accounting server; and performing policy and access control based on user subscription data. Supports the establishment of tunnels between ASN and CSN; Supports the generation of MS subscriber bills and WiMAX service settlement between operators; Supports the establishment of roaming tunnels between CSNs; Supports mobility between ASNs; Supports multiple WiMAXs Services, such as: end-to-end services and multimedia broadcast and multicast services. However, the current WiMAX network cannot provide the user with location service (LCS). The so-called LCS service refers to obtaining the geographical location information (including longitude coordinates and latitude) of the mobile terminal (MS/MSS) user through the mobile network. Coordinates, and a value-added service that provides location services to users with the support of an electronic map platform. With the development of technology, MS has become an indispensable part of people's life. The importance of mobile location business has become increasingly prominent. After the location-based service is opened, users can easily know where they are and can use the terminal. Find information about various places in the vicinity, such as: Where am I? Where is the nearest hospital to me? What banks are there around me? How to get from here to somewhere? Where is my good friend now? ... Location business can also be used for emergency assistance, elderly tracking, fleet management and so on. Therefore, as a mobile broadband metropolitan area network, the WiMAX network system needs to provide support in positioning technology to meet the needs of wireless location service development. Summary of the invention

In one aspect, embodiments of the present invention provide a method of providing location services that provide location services to users in existing WiMAX systems.

In another aspect, embodiments of the present invention also provide a communication device that provides location services for processing client requests in a location service of a WiMAX system.

In still another aspect, an embodiment of the present invention further provides a communication device for providing location services for performing a positioning operation in a location service of a WiMAX system.

In a further aspect, the embodiment of the invention further provides a system for providing location services, and provides location services for users through WiMAX technology.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

A method of providing location services in a WiMAX system, including:

Sending, by the positioning client, a first request message for acquiring physical location information of the target terminal to a positioning server in the visited network where the target terminal is currently located;

The positioning server sends a second request message for acquiring physical location information of the target terminal to the positioning control function entity where the target terminal is currently located according to the routing information; The positioning control function entity performs a positioning operation on the target terminal and returns a positioning result to the positioning client side.

A communication device comprising:

a module for receiving a first request message sent by the positioning client to obtain physical location information of the target terminal;

And a module for sending a second request message for acquiring physical location information of the target terminal to the positioning control function entity where the target terminal is currently located according to the routing information.

a communication device, configured to receive a second request message sent by a positioning server in a visited network where a client is currently located, and perform a positioning operation on the target terminal according to the second request message, and to the client The side returns the corresponding positioning result.

A communication system comprising:

The positioning client is configured to send the first request message to the positioning server in the visited network where the target terminal is currently located when acquiring the physical location information of the target terminal by the positioning client;

The positioning server is configured to receive the first request message sent by the positioning client, and send a second request message for acquiring the physical location information of the target terminal to the positioning control function entity currently in the target terminal according to the routing information.

The positioning control function entity is used for positioning the target terminal and returning the positioning result to the positioning client side.

In the embodiment of the present invention, when receiving the message for acquiring the physical location information of the target terminal, the location server in the visited network of the target terminal sends the message to the positioning control function entity where the target terminal is currently located, by the positioning. The control function entity performs a positioning operation on the target terminal, and returns a positioning result to the positioning client side. In this way, in a WiMAX system, users can use location-based services and location-based services at any time and anywhere, thereby enhancing the user's experience of using wireless services and meeting their needs for location services.

DRAWINGS

1 is a network architecture diagram of a WiMAX system in the prior art; 1 is a first network architecture diagram of a WiMAX system according to an embodiment of the present invention;

3 is a structural diagram of a function of a positioning server according to an embodiment of the present invention;

4 is a second network architecture diagram of a WiMAX system according to an embodiment of the present invention;

FIG. 5 is a flowchart of physical location information of a target terminal that acquires a roaming state by a positioning client according to an embodiment of the present invention;

FIG. 6 is a flow chart of obtaining physical location information of the positioning client when the positioning client is in a roaming state according to an embodiment of the present invention.

detailed description

In order to solve the problem that the existing global access microwave interoperability system (WiMAX system) cannot provide the location service (LCS service) for the user terminal, in the embodiment of the present invention, the positioning client is used to obtain the physical location information of the target terminal. The first request message is sent to the location server in the visited network where the target terminal is currently located; the location server sends a second request message for acquiring the physical location information of the target terminal to the location control of the target terminal according to the routing information. a function entity: after receiving the second request message, the positioning control function entity performs a positioning operation on the target terminal, and returns a positioning result to the positioning client side.

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

Referring to FIG. 2, the WiMAX system in this embodiment includes a positioning client 20 (LCS Client), a positioning server 21 (LCS Server), an access service network gateway 22 (ASN-GW), and a positioning control function entity 23 (Location). Control Funt ion, LCF) and target terminal 24 (target MS). The location client 20 is a user using a location service (LCS Client), which initiates a location operation procedure for the target terminal 24 to the location server 21; the location server 21 (LCS Server) is generally located in a connection service network (CSN) And configured to receive and process a location request message (including a location service request message and a location service call message), and send a location report control request message to the corresponding location control function entity 23 according to the route information; the access service network gateway 22 uses Receiving the location report control request message sent by the location server 21, and forwarding the message to the corresponding location control function entity 23; the location control function entity 23 is a location function control center in the access service network (ASN), After receiving the location report control request message sent by the location server 21, the target terminal 24 is located according to the quality of service request in the request, and the capabilities of the access service network SN) and the target terminal 24 to select an appropriate positioning method. And generating a corresponding positioning result according to the quality of service requirement and related data obtained during operation, where the positioning result includes physical location information (including horizontal precision information, vertical precision information, and speed direction information) of the target terminal 24; The target terminal 24 includes the function of the LCS C ient, and can be located by itself or by the positioning client 20, that is, the target terminal 24 and the positioning client 20 can be the same entity or different entities that are independent of each other. .

Referring to FIG. 3, the positioning server 21 includes a receiving module 210, a processing module 211, and a sending module 212. The receiving module 210 is configured to receive a location service request message or a location service call message, and receive a positioning result of the target terminal 24; the processing module 211 is configured to obtain related routing information, and perform permission verification on the positioning client 20, And performing the private verification on the positioning client 20 according to the user subscription information of the target terminal 24, or determining whether the positioning result meets the quality of service requirement after receiving the positioning result, and making the positioning result private according to the user subscription information of the target terminal 24. The sending module 212 is configured to send the positioning report control request message to the positioning control function entity 23 where the target terminal 24 is currently located according to the related routing information, and send the corresponding positioning result to the positioning client 20.

The location function server 21 is configured with a policy function entity (PF entity) and an authentication/authorization/accounting function entity (AAA entity). The PF entity is configured to provide the routing information, and the positioning server 21 is connected to the positioning control function entity 23 where the target terminal 24 is currently located; the AAA entity is configured to save the user subscription information and related routing information of the positioning client 20, and The other location server 21 is connected to the location server 21 in the home network of the target terminal 24 or/and the location server 21 in the visited network where the target terminal 24 is currently located.

The PF entity and the AAA entity may be function modules in the location server 21, or may be independent functional entities, which does not affect the final implementation effect. This embodiment is described in the second manner.

In addition, the WiMAX system also includes a base station (BS), a positioning measurement function entity (Loca t ion Measurement Unit, LMU) and Global Positioning Receiver (GPS Receiver). The location measurement function (LMF) in the base station (BS) is used to perform measurement and reporting of information required for positioning; the positioning measurement function entity is used to assist the positioning control function entity 23 in performing measurement of certain related information, The base station or the positioning measurement function entity may broadcast related information of the monthly service base station and the neighboring base station to assist the target terminal 24 to perform positioning measurement and/or location calculation, where the related information includes location information of the serving base station and the neighboring base station, Timing and synchronization information, positioning satellite information and position correction parameters, etc., the content of the related information can be encrypted, only authorized authorized target terminal 24 can receive correctly; global positioning information receiving device is used to receive GPS/Galileo positioning satellite transmission The parameters and information related to the positioning operation can also be used for timing and time correction of the base station, and the device can be located in the base station or access to the monthly network gateway 22.

Based on the foregoing network architecture, in this embodiment, a Mobile Termination-Location Request (MT-LR) is taken as an example. The MT_LR refers to the target terminal 24 (hereinafter referred to as the target MS) as the target. The originator of the location process is an external or internal entity of the network, not the target MS itself. Referring to FIG. 4, when the positioning client 20 (LCS Client) of the external network using the LCS service needs to physically locate a mobile terminal (target MS) in a roaming state, the current visited network of the LCS client is called Requesting Network, the positioning server 21 in the requesting network is called a Requesing-LCS Server (R-LCS Server), and the PF entity in the requesting network is called R-PF, and the AAA entity in the requesting network R-AAA; Similarly, the positioning server 21 in the home network (MS Home Network) of the target MS that needs to be physically located is called Home-LCS Server, H-LCS. Server), the PF entity in the home network is called H-PF, and the AAA entity in the home network is called H-AA A. The network that the target MS is in when roaming is called the visited network (Visited Network). The locating server is called a Visited-LCS Server (V-LCS Server). The PF entity in the visited network is called V-PF, and the AAA entity in the visited network is called V-AAA. In addition, the visited network is called Target to target MS The positioning control function entity 23 performing the positioning operation is called an LCF. Depending on the network configuration, the LCF may be a logical function module on the access service network gateway (Server ASN-GW) currently serving the target terminal 24, or It is an independent entity, which does not affect the final implementation effect. This embodiment is described in the second way.

Referring to FIG. 5, in this embodiment, the detailed process of obtaining the physical location information of the target MS in the roaming state by the LCS C I ient is as follows:

Step 300: The LCS C ient initiates a location service request message (LCS Serv i ce Reques t ) for obtaining physical location information of the target MS to the R-LCS Server. The location service request message includes a user identifier, a requested content (including a horizontal accuracy information request, a vertical precision information request, and a speed direction information request) and a quality of service request, and the location service request message may further include Time requirements, such as: Request message returns the positioning result immediately or allows the positioning result to be returned after a certain time delay.

Step 301: After receiving the location service request message, the R-LCS server performs rights verification on the LCS C ient according to the user identifier in the request message, that is, determines whether the LCS C ient has the right to obtain the physical location information of the target MS. .

Step 302: The R-LCS Server sends a routing request message to the H-AAA of the target MS to obtain the network address of the H-LCS Server of the target MS.

The routing request message may be sent by the R-LCS Server to the H-AAA, or may be sent by the R-AAA to the H-AAA, and the R-LCS Server or the R-AAA may obtain the home network of the target MS by using the identification information of the target MS. Location, and send a routing request message to the H-AAA or H-LCS Server of the home network.

Step 303: The H-AAA verifies, according to the routing request message, whether the R-LCS Server has the right to obtain the network address of the H-LCS Server, and if so, returns the network address of the H-LCS Server of the target MS to the R-LCS Server. ; Otherwise, the corresponding error message is returned.

Step 304: The R-LCS Server forwards the location service request message of the LCS C nit to the H-LCS Server for processing according to the network address of the H-LCS Server. Step 305: The H-LCS Server performs private authentication on the LCS-Client, that is, whether the LCS-Client is allowed to obtain the physical location information of the target MS according to the user subscription information of the target MS.

Step 306: The H-LCS Server queries the H-AAA for the current location of the target MS.

Step 307: When determining that the target MS is in the roaming state, the H-AAA returns the network address of the V-LCS Server in the visited network where the target MS is currently located to the H-LCS Server.

According to the configuration capability of the network, H-AAA can directly return the network address of the V-LCS Server to the H-LCS Server, or obtain the network address of the V-LCS Server from the V-AAA, and then return the network address to the H. -LCS Serve

Step 308: The H-LCS Server forwards the location service request message of the LCS CI ient to the V-LCS Server, and the request message also carries the result of the H-LCS Server performing private verification on the LCS CI ient.

Step 309: The V-LCS Server obtains the local V-PF or V-AAA network address by using an automatic or manual configuration method, and queries the local V-PF or V-AAA for the network address of the LCF where the target MS is currently located.

When the V-LCS Server queries the local V-PF, the V-PF first obtains the network address of the anchor access service network gateway (Anchor ASN GW). The so-called Anchor ASN GW connects the target MS to the connection service through the R3 interface. The network (CSN) gateway, the V-PF records the location information of the Service Flow Authenticator (SFA) on the Anchor ASN GW. Therefore, the V-PF can obtain the network address of the Anchor ASN GW; After the network address, the V-PF further queries the Anchor ASN GW for the network address of the serving service network gateway (Serving ASN GW) that currently serves the target MS, and continues to obtain the network of the LCF where the target MS is currently located through the Serving ASN GW. address.

When the V-LCS server queries the local V-AAA, the V-AAA first obtains the network address of the access service network gateway where the current authentication device (Anchor Authenticator) is located, and then the V-AAA further accesses the access service network. The gateway queries the network address of the Anchor ASN GW, and continues to query the network address of the Serving ASN GW and the LCF where the target MS is currently located through the Anchor ASN GW. website address. That is, the V-LCS Server can query the network address of the Serving ASN GW and the network address of the LCF where the target MS is currently located through the Anchor ASN GW.

Step 310: The V-PF or V-AAA returns the network address information of the LCF where the target MS is currently located to the V-LCS Server.

Step 311: The V-LCS Server sends a positioning control request message (Loca ioReprot Control) to the LCF, where the message includes the content of the request, the quality of service request, and the private verification result of the LCS Cl ient.

In addition, depending on the network configuration, the address information returned by the V-PF to the V-LCS Server may be the network address of the Anchor ASN GW, and the address information returned by the V-AAA to the V-LCS Server may be the Anchor ASN GW. The network address or the network address of the ASN GW where the current Anchor Authent ica tor of the target MS is located. In this case, the V-LCS Server sends a location control control request message to the ASN GW where the Anchor ASN or the Anchor Authent ica tor is located. The message is forwarded by the ASN GW where the Anchor ASN GW or the Anchor Authent ica tor is located to the LCF where the target MS is currently located.

Step 312: After receiving the positioning report control request message, the LCF performs a positioning operation on the target MS. When performing the positioning operation, the LCF first needs to comprehensively consider its own capability, the target MS's capability and the quality of service requirements (QoS requirements), and then select the appropriate positioning method to physically locate the target MS. For example, when the LCF uses the hybrid positioning method, the physical location of the target MS is first selected according to the QoS requirement. If the positioning operation fails or the obtained positioning result fails to meet the requirements, the LCF selects a positioning. The method with lower precision physically locates the target MS. If it is still unsuccessful, the LCF continues to select the method with lower positioning accuracy to physically locate the target MS until the QoS-compliant positioning result or LCS Client is required. The positioning time is reached.

Step 313: The LCF reports the final positioning result to the V-LCS Server, and the content of the positioning result is consistent with the QoS requirement in the positioning report control request message.

Step 314: The V-LCS Server returns a location service response message to the H-LCS Server (Loca t ion Service Response), the message carries the positioning result of the target MS.

If the QoS level is specified in the location report control request message, the V-LCS Server only carries the location result of the target MS in the location service response message when the corresponding positioning result satisfies the requirement of the QoS level; otherwise, the V-LCS Server passes The location service response message sends the corresponding error message to H-LCS Serve

Step 315: The H-LCS Server performs private verification on the positioning result of the target MS according to the user subscription information of the target MS. This time, the private verification is to determine whether the positioning result is allowed to be sent to the positioning client 20, because the target MS may define different privacy settings for different geographical locations, and therefore, the private authentication is performed again. At the same time, the H-LCS Server records the positioning result and the corresponding expiration date after the positioning result of the target MS is verified by private.

Step 316: The H-LCS Server returns a location service response message to the R-LCS Server, where the message carries the location result of the target MS.

Step 317: The R-LCS Server returns a location service response message to the LCS Client, and sends the location result information of the target MS to the LCS client.

In a specific case, any two networks in the Requesting Network, Home Network, and Visiting Network may be the same network, or three networks may be the same network. In this case, the corresponding two networks or three in the foregoing embodiment. The information exchange between the networks does not exist. The port is: When the Visiting Network and the Home Network are the same network (that is, the target MS handles the non-roaming state), then the H-LCS Server receives the location service request message. When the network address of the LCF where the target MS is currently located is obtained, the location report control request message is directly sent to the LCF, and so on.

Different from the above embodiment, the target MS (hereinafter referred to as MS) can also obtain its own physical location information; and after obtaining the corresponding positioning result, send the positioning result to another client (hereinafter referred to as Client). The positioning operation is called a Mobile Origination - Location Request (MO-LR).

Referring to FIG. 6, in this embodiment, when the MS is in a roaming state, it acquires its physical location information. The detailed process is as follows:

Step 350: The MS sends a location service invocation message (LCS Invoke) to the current LCF. The message contains the Q0S requirement.

Step 351: The LCF forwards the location service call message sent by the MS to the selected V-LCS Server. Step 352: The V-LCS Server sends an authentication request to the H-LCS Server of the MS according to the routing message provided by the V-PF or the V-AAA.

Step 353: The H-LCS Server performs the authority verification on the MS according to the user subscription information of the MS, and returns the result of the full certificate to the V-LCS Server.

Step 354: After the MS passes the privilege verification, the V-LCS Server sends a location report control request message to the LCF where the MS is currently located, where the message includes the content requested by the MS, the QOS request, and the privilege verification result of the MS.

Step 355: The LCF selects an appropriate positioning method to initiate a positioning operation on the MS according to the request content of the MS, the QOS requirement, the capability of the MS and the ASN network.

Step 356: After obtaining the positioning result of the MS that satisfies the QoS requirement, the LCF sends the positioning result to the MS and the V-LCS Server.

In this embodiment, the positioning result of the MS is sent to the client, and the LCF sends the positioning result, the validity period of the positioning result, the accuracy indication, and the QoS requirement of the MS to the client.

Step 357: The V-LCS Server forwards the positioning result and related information of the MS to the H-LCS Server of the MS, and records the positioning result and related information by the H-LCS Server.

Step 358: The H-LCS Server sends the positioning result and related information of the MS to the LCS Server where the client is currently located.

Step 359: The LCS Server sends the positioning result and related information of the MS to the corresponding client. Step 360: After processing the positioning result and related information of the MS, the client sends a response message (Ack) to the LCS Server, where the message includes a LCS Return Result.

Step 361: The LCS Server forwards the response message to the H-LCS Server of the MS.

Step 362: The H-LCS Server forwards the response message to the V-LCS after recording the response message. Step 363: After the V-LCS Server records the response message, the corresponding positioning information processing result is sent to the LCF.

Step 364: The LCF forwards the positioning information processing result to the MS.

In the above embodiment, the LCF sends an authentication request to the H-LCS Server directly after receiving the location service invocation message, when the location and the home network are in the non-roaming state. On the other hand, after obtaining the positioning result of the MS, the LCF directly sends the positioning result to the H-LCS Server, and so on.

In this way, in the WiMAX system, the user can use the location service and the location-based service at any time and any place, thereby improving the user's experience of using the wireless service and satisfying the demand for the location service; on the other hand, the operator can Providing a variety of value-added services through location services also increases user satisfaction and loyalty to a certain extent. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Claim

A method for providing location services in a global access microwave interoperability system, comprising the steps of:

The positioning server sends a second request message for acquiring the physical location information of the target terminal to the positioning control function entity where the target terminal is currently located according to the routing information;

The positioning control function entity performs a positioning operation on the target terminal, and returns a positioning result to the positioning client side.

2. The method for providing location services in a global access microwave interoperability system according to claim 1, wherein the positioning client and the target terminal are two mutually independent entities, and When the visited network where the target terminal is located and the home network of the target terminal are the same network, the first request message is first sent to the home network positioning server of the target terminal, and the home network positioning server sends the second request information to the target terminal. The current positioning control function entity.

The method for providing location services in a global access microwave interoperability system according to claim 1, wherein the positioning client and the target terminal are two independent entities, and the When the visited network where the target terminal is currently located and the home network of the target terminal are different networks, the first request message is first sent to the home network positioning server of the target terminal, and the home network positioning server forwards the first request message to The target terminal is currently located in the location server in the visited network, and the location request server sends the second request message to the location control function entity where the target terminal is currently located.

The method for providing a location service in a global access microwave interoperability system according to claim 3, wherein the positioning server in the visited network where the client is currently located acquires the target terminal according to the identification information of the target terminal. Location information of the home network, and obtaining a network address of the home network location server of the target terminal from the authentication/authorization/accounting function entity in the home network, and sending the first request message to the home network according to the network address Locate the server.

The method for providing location services in a global access microwave interoperability system according to claim 1, wherein if the visited network where the client is currently located is the home network of the target terminal, the home network is When receiving the first request message sent by the positioning client, the home network positioning server performs rights verification and private verification on the positioning client according to the user subscription information of the target terminal; if the positioning client is currently located in the visited network non-target The home network of the terminal, when the location server in the visited network receives the first request message sent by the positioning client, performs the right verification on the positioning client, and after the positioning client passes the permission verification, A request message is sent to the home network location server of the target terminal, and the home location network performs a private verification of the location client.

The method for providing location services in a global access microwave interoperability system according to claim 5, wherein the home network positioning server determines that the positioning client passes the corresponding verification, and then the second The request message is sent to the location control function entity where the target terminal is currently located; or the first request message is sent to the location server in the visited network where the target terminal is currently located, and the location request server sends the second request message to the current location of the target terminal. Positioning control function entity.

7. The method for providing location services in a global access microwave interoperability system according to claim 1, wherein the location server in the visited network where the target terminal is currently located is based on a policy function entity or authentication/authorization/billing. The routing information provided by the function entity sends the second request message to the positioning control function entity where the target terminal is currently located.

The method for providing location services in a global access microwave interoperability system according to claim 7, wherein the routing function provided by the policy function entity or the authentication/authorization/accounting function entity is a target terminal. The address of the access service gateway where the current anchor service flow authorization entity/authenticator is located; the location server queries the service location of the target terminal location controller according to the address of the access service gateway where the anchor service flow authorization entity/authenticator is located The gateway address, and sending a second request message to the target terminal location controller according to the service gateway address where the target terminal location controller is located.

9. The method for providing location services in a global access microwave interoperability system according to claim 7, wherein the policy function entity or a routing message provided by an authentication/authorization/accounting function entity The information includes a network address of the location control function entity where the target terminal is currently located, and the location server in the visited network sends the second request message to the location control function entity where the target terminal is currently located according to the network address.

10. The method for providing location services in a global access microwave interoperability system according to claim 9, wherein the policy function entity or the authentication/authorization/accounting function entity is anchored from the target terminal. The ingress gateway network obtains the network address of the positioning control function entity where the target terminal is currently located.

The method for providing location services in a global access microwave interoperability system according to claim 1, wherein the routing function entity or the routing information provided by the authentication/authorization/accounting function entity includes a target. a network address that is anchored to the monthly service network gateway in the visited network, where the positioning server in the visited network sends a second request message to the anchor access service network gateway according to the network address, The anchor access service network gateway forwards the second request message to a positioning control function entity where the target terminal is currently located.

The method for providing location services in a global access microwave interoperability system according to claim 7, wherein the routing information provided by the authentication/authorization/accounting function entity includes the current authentication of the target terminal. The location address of the access service network gateway is located, and the location server in the visited network sends a second request message to the access service network gateway according to the network address, where the access service network gateway The second request message is forwarded to the positioning control function entity where the target terminal is currently located.

The method for providing location services in a global access microwave interoperability system according to any one of claims 1 to 12, wherein the step of returning the positioning result to the positioning client side comprises the following steps: The positioning control function entity currently located sends the positioning result of the target terminal to the positioning server in the visited network where the target terminal is currently located;

The positioning server determines whether the received positioning result meets the quality of service requirement, and returns the positioning result to the positioning client side when determining that the positioning result meets the quality of service requirement.

14. The provision of location services in a global access microwave interoperability system as claimed in claim 1 The method is characterized in that, when the positioning client and the target terminal are the same entity, and the visited network where the positioning client is currently located and the home network of the positioning client are different networks, the first request message is used. Sending to the positioning server in the visited network where the positioning client is currently located, the positioning server sends a second request message to the positioning client after confirming that the positioning client passes the authority of the home network server The positioning control function entity.

The method for providing a location service in a global access microwave interoperability system according to claim 1, wherein the positioning client and the target terminal are the same entity, and the positioning client is currently When the visited network is the same network as the home network of the positioning client, the first request message is sent to the home network positioning server of the positioning client, and the home network positioning server confirms that the positioning client passes the authority verification The second request message is sent to the positioning control function entity where the positioning client is currently located.

The method for providing a location service in a global access microwave interoperability system according to claim 14 or 15, wherein the positioning control function entity currently located by the positioning client obtains the positioning of the positioning client After the result, the positioning result is sent to the positioning client and the home network positioning server of the positioning client.

The method for providing location services in a global access microwave interoperability system according to claim 16, wherein if the positioning client instructs to send its own positioning result to another client, The home network locating server of the locating client sends the corresponding locating result to the locating server in the visited network where the other client is currently located, and the positioning server sends the positioning result to the other client.

The method for providing a location service in a global access microwave interoperability system according to claim 17, wherein the another client receives the positioning result of the positioning client and processes the positioning result. And returning the corresponding processing result to the client side.

The method for providing location services in a global access microwave interoperability system according to claim 1, wherein the positioning control function entity is located in an access service network gateway that provides services for the target terminal.

20. A communication device, comprising:

a receiving module, configured to receive a first request message that is sent by the positioning client to obtain physical location information of the target terminal;

a processing module, configured to acquire related routing information, and generate a second request message for acquiring physical location information of the target terminal;

And a sending module, configured to send the second request message to a positioning control function entity where the target terminal is currently located.

The communication device according to claim 20, wherein the communication device sends the second request message to the current location of the target terminal according to the routing information provided by the policy function entity or the authentication/authorization/accounting function entity. Control function entity.

A communication device, configured to: receive a second request message sent by a positioning server in a visited network where a client is currently located, and perform a positioning operation on the target terminal according to the second request message, And returning corresponding positioning results to the client side.

23. A communication system, comprising:

a positioning server, configured to receive a first request message sent by the positioning client, and send a second request message for acquiring physical location information of the target terminal to the positioning control function entity where the target terminal is currently located according to the routing information;

The positioning control function entity is configured to perform a positioning operation on the target terminal, and return a positioning result to the positioning client side.

The communication system according to claim 23, further comprising a base station or a positioning measurement function entity, wherein the base station or the positioning measurement function entity is configured to send location information, timing, and synchronization information of the serving base station and the neighboring base station. , locate satellite information and position correction parameters.

The communication system according to claim 23 or 24, wherein the location server in the visited network where the target terminal is currently located is provided according to the policy function entity or the authentication/authorization/accounting function entity. The routing information sends the second request message to the positioning control function entity where the target terminal is currently located.

The communication system according to claim 25, wherein the routing information provided by the policy function entity or the authentication/authorization/accounting function entity includes a network address of a positioning control function entity where the target terminal is currently located, The positioning server in the visited network sends the second request message to the positioning control function entity where the target terminal is currently located according to the network address.

The communication system according to claim 25, wherein the routing information provided by the policy function entity includes a network address of an anchor access service network gateway in a visited network where the target terminal is currently located, and the visited network And the positioning server sends a second request message to the anchor access service network gateway according to the network address, and the anchor access service network gateway forwards the second request message to a positioning control where the target terminal is currently located. Functional entity.

The communication system according to claim 25, wherein the routing information provided by the authentication/authorization/accounting function entity includes a network address of an access service network gateway where the current authenticator of the target terminal is located, The positioning server in the visited network sends a second request message to the access service network gateway where the authenticator is currently located according to the network address, and the access service network gateway forwards the second request message to the target terminal. The positioning control function entity.