CN101147407A - Terminal, system and method for providing location information service by interworking between wlan and mobile communication network - Google Patents

Abstract

A WLAN terminal, system and method for providing a SUPL service, are discussed. According to an embodiment, the WLAN terminal includes a controller to establish an IP connection with a mobile communication network through interworking between the mobile communication network and a WLAN, and selectively perform a SUPL procedure with a location server of the mobile communication network through the IP connection in response to a request for location information of the WLAN terminal from the location server.

Description

Terminal, system and method for providing location information service by interworking between WLAN and mobile communication network

technical field

The present invention relates to a location information system, and more particularly, to a User Equipment (UE), system and method for providing a location information service via interworking between a mobile communication system and a Wireless Local Area Network (WLAN).

Background technique

Generally, a mobile communication system has a functional part for calculating a terminal location in a mobile communication network to provide a positioning service, and for transmitting the terminal location to a certain entity periodically or according to a corresponding request.

Depending on the internal network structure, such as 3GPP network, 3GPP2 network, etc., the network structure related to the positioning service is different. Currently, there are several methods for calculating the position (positioning) of a mobile terminal, including the cell ID method for transmitting the ID of the cell to which the mobile terminal belongs, for measuring the time required for radio waves to reach each base station from the mobile terminal via triangulation. A method of measuring and calculating the position of a mobile terminal, and a method of using GPS (Global Positioning System).

In order to provide users with location services, a large amount of signals and location information are transmitted between mobile terminals and location servers. Recently, a positioning technology for providing a positioning service, that is, a positioning service based on a position of a mobile terminal, is gradually being used. These technologies can generally be provided via user plane and control plane, one of which is SUPL (Reliable User Plane Positioning) technology, which provides location service via user plane.

In order to effectively transmit the information needed to calculate the location of the mobile terminal, SUPL (Reliable User Plane Positioning) technology uses user plane data bearers to carry positioning technology-related protocols between the mobile terminal and the SUPL network.

Generally, in the location information system, the SUPL network related to the location service includes SUPL agent, SLP (SUPL location platform) and SET (SUPL enabled terminal) and so on. The SUPL proxy is a serving logical access point (AP) using the actually measured location information, and the SLP is a SUPL serving AP of the network part that accesses network resources to obtain location information. The SET is a device for communicating with a SUPL network using a SUPL interface, and can be, for example, a UE (User Equipment) for UMTS, an MS (Mobile Station) for GSM, an MS for IS-95, and a laptop or PDA with SET functionality (Personal Digital Assistant).

A network where a user initially registers is called a home network, and a network of an area where the user is located after the user has moved from the home network is called an access network. The SLP within the home network is referred to as Home SLP (H-SLP), and the SLP within the access network is referred to as Access Network (V-SLP). When the network initiates the SUPL procedure, the SLP first connected by the external client is called the requesting SLP (R-SLP), which may or may not be the same logical entity as the H-SLP. A SET used for the purpose of tracking its current location is called a target SET.

SLP (Network Element) includes SPC (SUPL Positioning Center) which calculates actual position information (position) of target SET, and SLC (SUPL Positioning Center) which handles additional functions other than calculating position information. For example, the SLC performs and/or supports procedures for roaming, resource management, and the like. The SET may calculate location information via the SLC (in case of proxy mode) by communicating with the SPC, or may calculate location information by directly opening a connection with the SPC (in case of non-proxy mode).

1 is a signal flow diagram illustrating a SUPL procedure of a SUPL-based location information system when a network requests location information on a specific terminal in a proxy mode, and when roaming is not performed.

As shown in Figure 1, the SUPL-based location information system includes SUPL agent 1, SLP3 and target SET5. SLP3 is a location server, and target SET5 is a target terminal.

When SUPL agent 1 transmits MLP (Mobile Location Protocol) SLIR (Standard Location Immediate Request) message to SLP3 to request location information about target SET5 (step S11), this SLP3 checks whether target SET5 is already roaming, that is, whether The target SET5 currently belongs to a different access network, and it is checked whether the target SET5 supports SUPL (step S12).

The SLP3 transmits a SUPL initial message (SUPL INIT) to the target SET5 to start the SUPL procedure with the target SET5 (step S13). In this case, the SUPL initial message includes at least the session ID, the address of the SLP, the location method used, and so on. In addition, the secret can also be included in the SUPL initial message, which can be used in a situation where after the secret of the target SET5 is confirmed by the SLP3, a notification related to the location information of the target SET needs to be provided to the user. In addition, an SLP mode indicator (SLP mode) may be included in the SUPL initial message, which indicates a mode (e.g., proxy mode, non-proxy mode, etc.), which is an inventive concept owned by the assignee of the present application and included in Co-pending US patent application.

If the target SET5 has received the SUPL Initial message, which is not open for a data connection with any network, it requests a data connection from a packet data network, such as 3GPP or 3GPP2 or the like.

When generating a data connection (step S14), the target SET 5 transmits a SUPL position initial message (SUPL POS INIT) to the SLP3 to start the process for determining the location/position information of the target SET 5 (step S15). Then, the target SET5 and the SLP3 exchange the next message for performing actual location determination processing, and the SLP3 or the target SET5 calculates the current position of the SET5 via the next message (step S16). In this case, the SUPL Position Initial (SUPL POS INIT) message includes at least a session ID, a LID (Location Identifier) representing a base station ID, and capabilities of a target SET. Messages exchanged between target SET5 and SLP3 may include session ID, protocol used for positioning (eg, RRLP, RRC or TIA-801), etc.

After calculating the position of the target SET5, SLP3 transmits a SUPL end message (SUPL END) for reporting the termination of the SUPL process to the target SET5 (step S17), and also sends the calculated position information ( posresult) to the SUPL agent 1 (step S18).

Recently, as Internet services using WLANs become more common, there is interest in a technology that allows users of WLAN terminals to connect with WLANs via mobile communication networks to receive Internet services in an area that does not support WLANs. A network for applying this technology can be granted I-WLAN (Interworking WLAN) in 3GPP, and 3GPP that provides various additional services including location information service through interoperability (interworking) with WLAN network (or other mobile communication network) would be desirable.

However, since there is neither a network structure nor a protocol for providing location information services (for example, SUPL service) in the prior art system involving the existing WLAN and 3GPP network, the WLAN terminal according to the prior art The location information service cannot be received via the 3GPP network.

Contents of the invention

technical problem

Accordingly, an object of the present invention is to provide a terminal or user equipment (UE), system and method for providing location information service, which solve the limitations and disadvantages related to the prior art.

Another object of the present invention is to provide a WLAN terminal (UE), system and method for providing location information service, which can define network structure and protocol to provide via interworking between WLAN and mobile communication network/system The location information service is provided to the WLAN terminal.

Another object of the present invention is to provide a WLAN terminal (UE), system and method for providing location information service via interworking between WLAN and mobile communication network, wherein when the location server connected to the mobile communication network When receiving a location information request for a WLAN terminal from a client connected to a mobile communication network, it sends the requested location information of the WLAN terminal to an Communication between entities that interwork across networks is provided to clients.

Yet another object of the present invention is to provide a WLAN terminal (UE), system and method for providing location information services via interworking between a WLAN and a mobile communication network, wherein when the WLAN terminal undergoes authentication and During the registration process, the information related to the location of the terminal is stored, and when the client requests to track the location information of the WLAN terminal, if the location server receives the information from the AAA (authentication/permission/consideration) server or the HSS (local subscriber server)/HLR ( The information related to the terminal location obtained by the home location register) satisfies the QoP (Quality of Positioning) of the request for tracking the location received from the client, and the location server can provide the obtained information related to the terminal location as the location information of the WLAN terminal to the client.

Still another object of the present invention is to provide a WLAN terminal (UE), system and method in which when a client requests location information of a specific WLAN terminal that has registered to a network to receive a service, it checks whether the WLAN terminal has passed through the network Authenticated and connected to the network, and if the WLAN terminal has been authenticated and connected to the network, the location information of the WLAN terminal is detected by using the SUPL process, and then provided to the client.

Technical solutions

In order to achieve all or at least part of the above and other objects, according to one aspect of the present invention, a method for providing terminal location information services between a location server and a client is provided, including: the location server receives the user from the client A request for tracking the location of a specific terminal; confirmation of the routing information of the specific terminal by the location server; and if there is a connection between the terminal and a Packet Data Gateway (PDG), a SUPLINIT message is transmitted via the connection.

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, there is further provided a method for providing a location information service via interworking between a WLAN and a mobile communication network, comprising: receiving from a client by a location server Receive a request for tracking the location of the WLAN terminal; obtain the routing information of the service node to which the WLAN terminal belongs from the HSS/HLR by the location server; obtain the routing information of the WLAN terminal from the service node by the location server; determining a SUPL initial message transmission method and transmitting; calculating location information of the WLAN terminal via a SUPL process between the WLAN terminal having received the SUPL initial message and the location server; and providing the calculated location information of the WLAN terminal to the client by the location server .

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, there is further provided a method for providing a location information service via interworking between a WLAN and a mobile communication network, comprising: receiving from a client by a location server Receiving a request for tracking the location of the WLAN terminal; requesting the routing information of the service node to which the WLAN terminal belongs from the HSS/HLR by the location server; providing the routing information of the service node to the location server by the HSS/HLR; requesting the routing information of the WLAN terminal; providing the routing information of the WLAN terminal to the location server by the service node; and confirming information about the tunnel between the WLAN terminal and a packet data gateway (PDG) including the routing information of the WLAN terminal, and by The location server tunnels the SUPL initial message to the WLAN terminal.

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, there is further provided a method for providing a location information service via interworking between a WLAN and a mobile communication network, comprising: receiving from a client by a location server Receiving a request for tracking the location of the WLAN terminal; requesting the routing information of the service node to which the WLAN terminal belongs from the HSS/HLR by the location server; providing the routing information of the service node to the location server by the HSS/HLR; requesting routing information of the WLAN terminal; providing the routing information of the WLAN terminal to the location server by the service node; and transmitting a SUPL initial message to the WLAN terminal by the location server if no IP address is currently set for the WLAN terminal.

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, there is further provided a method for providing a location information service via interworking between a WLAN and a mobile communication network, comprising: receiving from a client by a location server receiving a request for tracking the location of the WLAN terminal; obtaining routing information of the service node to which the WLAN terminal belongs from the HSS/HLR by the location server; and if the terminal location-related information included in the routing information of the obtained service node satisfies the QoP ( Positioning quality), the location server provides information related to the terminal location to the client.

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, a method for providing location information services via interworking between a WLAN and a mobile communication network is further provided, including: accessing by a WLAN terminal Access network of the WLAN; when authentication is performed via the AAA server and registration is performed via the HSS/HLR, storage of terminal location-related information provided by the WLAN AN; set by the WLAN terminal for packet use by means of a Packet Data Gateway (PDG) The tunnel of the service; the request for tracking the location of the WLAN terminal is received by the location server from the client; the routing information of the service node to which the WLAN terminal belongs is obtained by the location server from the HSS/HLR; and if included in the routing information of the obtained service node The information related to the terminal location satisfies the QoP (Quality of Positioning) of tracking the location tracking request received from the client, and the location server provides the information related to the terminal location to the client.

In order to achieve all or at least part of these advantages, according to another aspect of the present invention, a method for providing location information services via interworking between a WLAN and a mobile communication network is further provided, including: accessing by a WLAN terminal Access network of WLAN; when authentication is performed via AAA server, and registration is performed via HSS/HLR, storing information related to terminal location provided by WLAN AN; request for tracking location of WLAN terminal received by location server from client Obtain the routing information of the service node to which the WLAN terminal belongs to by the location server from the HSS/HLR; and if the terminal location-related information included in the routing information of the obtained service node meets the QoP (Quality of Positioning) of the location tracking request received from the client ), the location server provides information related to the location of the terminal to the client; and if the information about the location of the terminal included in the routing information of the WLAN terminal does not satisfy the QoP, or if the location server wants to perform a SUPL process with the WLAN terminal, the location server The SUPL initial message is transmitted to the WLAN terminal via SMS method or WAP push method, or via TCP/IP or UDP/IP connection.

In order to achieve all or at least a part of these advantages, according to another aspect of the present invention, a method for providing location information services in the system is further provided, wherein a specific WLAN terminal relies on a Packet Data Gateway (PDG) of a 3GPP network Setting up a tunnel to receive a certain service, the method includes: receiving a location information request message about the WLAN terminal from a client by a location server; confirming the privacy of the location information about the WLAN terminal by the location server; using the location server to request information about the WLAN terminal The terminal information request message is sent to HSS (local subscriber server)/HLR (home location register); Check whether there is information about WLAN terminals by HSS/HLR; If there is no information about WLAN terminals, HSS/HLR will request user information The message is sent to the AAA (authentication/permission/consideration) server, which manages information about the WLAN terminal; the terminal information confirmation message including the WLAN terminal information is received by the HSS/HLR from the AAA server, and is transmitted to the location server; The location server of the terminal information confirmation message checks the PDG connection status of the WLAN terminal via the WLAN terminal information, and if the WLAN terminal has been connected with the PDG, sends the location information request message to the PDG; the location server that has received the location information confirmation message from the PDG tracking the location of the WLAN terminal; and sending the location information of the WLAN terminal to the client by the location server.

In order to achieve all or at least a part of these advantages, according to another aspect of the present invention, a method for providing location information services in the system is further provided, wherein a specific WLAN terminal relies on a Packet Data Gateway (PDG) of a 3GPP network Setting up a tunnel to receive a certain service, the method includes: receiving a location information request message about the WLAN terminal from a client by a location server; confirming the privacy of the location information about the WLAN terminal by the location server; using the location server to request information about the WLAN terminal The terminal information request message of the terminal information is sent to HSS (local subscriber server)/HLR (home location register); Check whether there is the information of WLAN terminal by HSS/HLR; If there is no information of WLAN terminal, will include AAA (authentication/ The terminal information confirmation message of the address of the permission/consideration) server is transmitted to the location server, and the AAA server manages the information of the WLAN terminal; the connection/non-connection check message for requesting the WLAN terminal information is transmitted to the AAA server by the location server; The server receives a connection/non-connection check message including WLAN terminal information from the AAA server; if the location server confirms the PDG connection status of the WLAN terminal based on the WLAN terminal information, and there is a connection with the corresponding PDG, a location information request message is sent to the PDG; The location server which has received the location information confirmation message from the PDG tracks the location of the WLAN terminal; and the location server transmits the location information of the WLAN terminal to the client.

According to another aspect, the present invention provides a wireless local area network (WLAN) terminal for providing a reliable user plane location (SUPL) service, comprising: a controller communicating with the mobile communication network via interworking between the mobile communication network and the WLAN An IP connection is established, and in response to a location information request for the WLAN terminal from the location server, a SUPL procedure with the location server of the mobile communication network is selectively performed via the IP connection.

According to another aspect, the present invention provides a wireless local area network (WLAN) terminal for providing a reliable user plane location (SUPL) service, comprising: a controller receiving a SUPL start signal from a location server of a mobile communication network, and The interworking between the communication network and the WLAN establishes an IP connection with the mobile communication network, and transmits a SUPL positioning initiation signal to the location server via the IP connection.

According to another aspect, the present invention provides a mobile communication network for providing a reliable user plane location (SUPL) service, comprising: a location server establishing communication with a wireless local access network via interworking between the mobile communication network and a WLAN (WLAN) IP connection, and selectively executes the SUPL process with the WLAN terminal via the IP connection in response to a request from a client requesting location information of the WLAN terminal.

According to another aspect, the present invention provides a mobile communication network for providing a reliable user plane location (SUPL) service, comprising: a location server selectively transmitting a SUPL activation signal to a wireless local area network (WLAN) terminal, and responding A request from a client requesting location information of a WLAN terminal, establishing an IP connection with the WLAN terminal via interworking between the mobile communication network and the WLAN, and receiving a SUPL positioning start message from the WLAN terminal via the IP connection.

According to another aspect, the present invention provides a method for providing a reliable user plane location (SUPL) service using a wireless local area network (WLAN) terminal, comprising: by the WLAN terminal via interworking between the mobile communication network and the WLAN and the mobile The communication network establishes an IP connection; and selectively performs a SUPL procedure with the location server of the mobile communication network via the IP connection in response to the request from the location server for location information of the WLAN terminal.

According to another aspect, the present invention provides a method for providing a reliable user plane location (SUPL) service using a wireless local area network (WLAN) terminal, comprising: receiving, by the WLAN terminal, a SUPL start signal from a location server of a mobile communication network, and via Interworking between the mobile communication network and the WLAN establishes an IP connection with the mobile communication network; and transmits, by the WLAN terminal, a SUPL location start message to the location server via the IP connection.

According to another aspect, the present invention provides a method for providing a reliable user plane location (SUPL) service using a mobile communication network comprising a location server, comprising: by the location server via interworking between the mobile communication network and the WLAN and A wireless local access network (WLAN) terminal establishes an IP connection; and a SUPL procedure is selectively performed by the location server with the WLAN terminal via the IP connection in response to a request of a client requesting location information of the WLAN terminal.

According to another aspect, the present invention provides a method for providing a reliable user plane location (SUPL) service using a mobile communication network including a location server, comprising: selecting, by the location server, in response to a request from a client requesting location information of a WLAN terminal. selectively transmitting a SUPL start message to a wireless local area network (WLAN) terminal, and establishing an IP connection with the WLAN terminal via interworking between the mobile communication network and the WLAN; and receiving the SUPL location start message from the WLAN terminal via the IP connection by the location server .

According to another aspect, the present invention provides a method of providing a reliable User Plane Location (SUPL) service through interworking between a mobile communication network comprising an access point, a storage unit, and a wireless local area network (WLAN). A location server, and wherein an IP connection is established between the WLAN terminal and the location server via an access point, the method comprising: responding to a location information request from a client, requesting service node routing information and performance information of the WLAN terminal from a storage unit by the location server; receiving, by the location server, the requested service node routing information and performance information from the database; requesting, by the location server, target terminal routing information from the verification server using the received service node routing information in part; receiving, by the location server, the target terminal routing information from the verification server; and A SUPL procedure with the WLAN terminal is performed by the location server in part using the received target terminal routing information via the established IP connection in order to obtain location information of the WLAN terminal.

According to another aspect, the present invention provides a method of providing a reliable User Plane Location (SUPL) service through interworking between a mobile communication network comprising an access point, a storage unit, and a wireless local area network (WLAN). A location server, and wherein an IP connection is established between the WLAN terminal and the location server via an access point, the method comprising: responding to a location information request from a client, requesting service node routing information and performance information of the WLAN terminal from a storage unit by the location server; and information requested by the location server from the database, wherein the service node routing information received by the location server includes address information of the verification server and information related to the terminal location registered in the storage unit; the location server determines the received terminal location related information Whether the information satisfies the QoP (Quality of Positioning) request included in the client's location information request; selectively providing the terminal location-related information as the location information of the WLAN terminal to the client from the location server based on the determination result; if the terminal location-related information The QoP request is not satisfied, the service node routing information received is partially used by the location server to request the target terminal routing information to the authentication server; the target terminal routing information is received by the location server from the authentication server; and partly used by the location server via the established IP connection The received target terminal routing information executes the SUPL procedure with the WLAN terminal.

In the following description, the additional advantages, objects and characteristics of the present invention will be set forth to some extent, when referring to the following content or can be learned from the practice of the present invention, to some extent for those ordinary skills in the art Personnel will become apparent. The objects and advantages of the invention may be realized and attained as particularly pointed out in the appended claims.

Description of drawings

The invention will now be described in detail with reference to the accompanying drawings, in which like reference numerals refer to like elements, in which:

1 is a flowchart illustrating a SUPL procedure for requesting location information of a specific terminal in a non-roaming agent mode;

2 is a schematic structure of a system for providing location information services via interworking between a WLAN and a mobile communication network;

3 is a flowchart illustrating a method for providing location information services via interworking between a WLAN and a mobile communication network according to a first embodiment of the present invention;

4 is a flowchart illustrating a method for providing location information services via interworking between a WLAN and a mobile communication network according to a second embodiment of the present invention;

5 is a flowchart illustrating a method for providing location information services via interworking between a WLAN and a mobile communication network according to a third embodiment of the present invention;

6 is a diagram showing an example of a location information format of a WLAN terminal or a WLAN AP according to an embodiment of the present invention; and

FIG. 7 is a flowchart illustrating a method for providing a location information service via interworking between a WLAN and a mobile communication network according to a fourth embodiment of the present invention.

Detailed ways

The present invention provides a network structure and a protocol for allowing a WLAN terminal (UE) to receive a location information service via a mobile communication network, and provides a corresponding call flow. In particular, the present invention provides a method and system, wherein when a location server of a mobile communication network receives a request for a location of a WLAN terminal from a client, the location server communicates with an entity of the mobile communication network and for allowing It communicates with the interworking entity of the mobile communication network, and provides the location information of the WLAN terminal to the client.

The present invention applies SUPL, that is, a protocol for providing user location information services via a TCP/IP or UDP/IP connection between a location server and a mobile terminal (or UE) to A service of interworking among them, whereby a user of a WLAN terminal can receive a location information service via a mobile communication network.

FIG. 2 is a schematic structure of a system for providing location information services via interworking between a WLAN and a mobile communication network according to an embodiment of the present invention.

As shown in Figure 2, the system for providing location information services according to the present invention includes a WLAN terminal 10, a mobile communication network 30, such as a 3GPP network (Public Land Mobile Network (PLMN)), for connecting the WLAN terminal 10 to the WLAN WLAN access network (WLAN AN) 11 for interworking with mobile communication network 30, and client 40 connected to mobile communication network 30 and requesting location information of WLAN terminal 10 and/or using obtained location information. The WLAN terminal 10 includes a controller/processor 10a and other components known in prior art WLAN terminals and the like. All components of the system of Figure 2 are operatively connected and configured.

The mobile communication network 30 includes a location server for computing requested location information via a SUPL procedure with a corresponding terminal via interworking with the WLAN, and for providing the calculated location information to a client 40 . In this example, the mobile communication network 30 is a 3GPP network, but may be other, such as a 3GPP 2 network or the like. The mobile communication network 30, such as a 3GPP or 3GPP 2 network, includes a Gateway Mobile Location Center (GMLC) 31 which acts as a location server; exists in the mobile communication home network and performs AAA (authentication/permission/ Consider) server 32; HSS/HLR (Local Subscriber Server/Home Location Register) 33 for managing subscriber information and AAA server address of each subscriber; connected with location server (GLMC) 31 and storing subscribers related to location information PPR (Private Profile Register) 34 of the private information; OCS (Online Charging System) 35 for real-time collection of usage fees relative to the WLAN service used by the WLAN terminal 10 according to time and usage; for connecting the WLAN AN11 and the AAA server WLAN access gateway (WAG) 20 of 32; and access point AP (packet data gateway (PDG)) 21 for connecting packet switching network to provide packet switching service of mobile communication to WLAN terminal 10. The HSS/HLR 33 can also be considered as a memory or a database.

FIG. 3 is a flowchart illustrating a method for providing a location information service via interworking between a WLAN and a mobile communication network according to a first embodiment of the present invention. As an example, the method of FIG. 3 is described herein as being performed in the system of FIG. 2, but may be performed in other suitable devices/systems. The processing performed by the WLAN terminal 10 may be performed and/or controlled by the controller 10 a of the WLAN terminal 10 .

Referring to FIG. 3, the WLAN terminal 10 selects an appropriate WLAN AN11 that is currently accessible, and attempts to connect to the WLAN AN11. When the WLAN terminal 10 is connected with the WLAN AN 11 (step S21), the WLAN AN 11 performs a mutual authentication process between the WLAN terminal 10 and the WLAN AN 11 via communication with the AAA server 32 of the mobile communication network 30. In this case, an EAP (Extensible Authentication Protocol) authentication process is performed by using EAP, however, other types of authentication processes may be used. The EAP packet used for the EAP authentication process is transmitted to the AAA server 32 of the mobile communication network 30 via the WLAN AN11. In this case, the WLAN AN11 can go through the AAA proxy server in order to connect with the AAA server 32. Then, in order to perform a mutual authentication process between the WLAN terminal 10 and the AAA server 32, the AAA server 32 may connect and communicate with the HSS/HLR 33 to fetch authentication information therefrom. The authentication information includes an authentication vector that has been pre-registered by the AAA server 32 for authenticating the WLAN terminal 10 , which may include key information related to the WLAN terminal 10 . Usually, the HSS/HLR33 stores therein key or authentication information about each WLAN terminal already registered in the HSS/HLR33.

The AAA server 32 can also receive subscription information of the WLAN terminal 10 from the HSS/HLR 33 connected thereto. The subscription information may include license information, a permanent ID (ie, IMSI (International Mobile Station/Subscriber Identity)) of the WLAN terminal 10, and capabilities of the WLAN terminal 10 (step S22).

The AAA server 32 registers WLAN terminal information, for example, the permanent identifier of the WLAN terminal 10 , by interworking with the HSS/HLR 33 . In this case, the AAA server 32 registers the address that has been subjected to the authentication process by the WLAN terminal 10 to the HSS/HLR 33 (step S23).

After having authenticated the WLAN terminal 10 via the AAA server 32 of the mobile communication network 30 and registered the WLAN terminal 10 via the HSS/HLR 33 of the mobile communication network 30, the WLAN terminal 10 can obtain access to the PDG (Access Point) 21 Information (for example, IP address, etc.) to receive mobile communication packet service via DNS (Domain Name System) query (step S24).

The WLAN terminal 10 selects one of the access information of the access point obtained via DNS query, and forms a tunnel, that is, an IP connection, such as a TCP/IP or UDP/IP connection with the PDG 21, for the selected access point (PDG) 21 supports packet service (step S25). When selecting an access point, the WLAN terminal 10 selects an access point with a similar type of address (for example, IPv4 or IPv6) as its IP address.

After or during the tunneling process, the client 40 requests a service for providing information on the location of the target terminal (step S26). That is, the client 40 generates and transmits a location information service (LCS) request for requesting location information of a target terminal (eg, WLAN terminal 10 ) to the location server (GMLC) 31 .

The location server 31 requests service node routing information and terminal capabilities from the HSS/HLR 33 in order to obtain information on the service node to which the target terminal (WLAN terminal 10) belongs, that is, information (for example, address) of the AAA server (step S27). In this case, the capability information of the target terminal refers to the capability information of the target terminal related to location tracking, such as whether the target terminal supports SUPL, and/or whether the target terminal supports SUPL defined in the existing mobile communication network. location tracking process. The location server 31 may connect with the PPR 34 to confirm pre-registered location tracking service information and private information of a target terminal such as the WLAN terminal 10 before connecting with the HSS/HLR 33 . In this case, the WLAN terminal 10 can pre-register its private information related to the location tracking service on the PPR34, and after checking the private information, when the PPR34 allows the location tracking service requested by the client 40, the location server 31 may execute step S27.

Then, in response to the request in step S27, the HSS/HLR 33 transmits the service node routing information, such as the address of the AAA server 32 of the WLAN terminal 10 and the capability information of the target terminal (WLAN terminal 10), to the location via the service node routing information confirmation message. server 31 (step S28).

In this case, the capability information of the target terminal includes information for selecting a terminal location tracking method, and can be used to determine whether the target terminal supports SUPL, or to determine a location that can be supported by 3GPP or a specific communication network method.

When the WLAN terminal 10 (target terminal) supports SUPL, the location server (GMLC) 31 accesses the AAA server 32 by using the address of the AAA server 32 received from the HSS/HLR 33, and requests the routing information of the WLAN terminal 10 to the AAA server 32 . The routing information of the WLAN terminal 10 (that is, the target terminal routing information) includes at least the following: (i) the IP address of the WLAN terminal 10, and (ii) information about the access point to which the tunnel has been set with the WLAN terminal 10 . The information (ii) may indicate whether a tunnel has been established between the WLAN terminal 10 and the PDG 21 (AP), for example, from step S25. Alternatively, the routing information of the WLAN terminal 10 includes at least the following: (i) the IP address of the WLAN terminal 10, (ii) information about the access point (PDG) to which the tunnel has been set with the WLAN terminal 10, and ( iii) Information on the currently set wireless access point name (W-APN) of the WLAN terminal 10 . The W-APN information (iii) includes a W-APN network identifier (NI) indicating the ID of the external IP network connected to the WLAN terminal 10 via the AP (PDG) 21, and a mobile communication network identifier (NI) indicating that the WLAN terminal 10 has been connected to it. The W-APN Operator Identifier (OI) of the ID of the network 30, and such information may be used as desired. This information (ii) is also referred to herein as tunnel information.

In response to the request at step S29, the AAA server 32 then transmits the routing information of the requested target terminal (ie, the WLAN terminal 10) to the location server 31 (step S30).

The location server 31 generates a SUPL INIT message and transmits it to the WLAN terminal 10 by using the received routing information of the WLAN terminal 10 to start the SUPL procedure. In this case, it is determined that a tunnel has been formed between the WLAN terminal 10 and the AP 21 based on the tunnel information of the target terminal routing information, and the location server 31 initiates SUPL via the established tunnel, that is, via a TCP/IP or UDP/IP connection. The message is transmitted to the WLAN terminal 10 . Thereafter, the SUPL process for tracking the position of the WLAN terminal 10 is continuously performed via the established tunnel (step S31). After calculating the location information of the WLAN terminal 10 by, for example, the location server or the WLAN terminal 10, the location server 31 terminates the SUPL process, and transmits the calculated location information of the WLAN terminal 10 to the client 40, for example, using an LCS response message (step S32). Here, the SUPL procedure of step S31 may be any existing SUPL procedure or the SUPL procedure of FIG. 1 including the use of the SLP mode indicator. Furthermore, in step S31, communication between the WLAN terminal 10 and the location server 31 is realized via the AP 21, ie, via the established tunnel (IP connection).

In the state where the WLAN terminal 10 has gone through the authentication and registration process via the AAA server 32 and the HSS/HLR 33 of the mobile communication network 30, and has formed a tunnel for the packet service between the WLAN terminal 10 and the AP(PDG) 21, When the location server (GMLC) 31 connected to the mobile communication network 30 receives a location information request for the WLAN terminal 10 from the client 40, in the first embodiment of the present invention, the location server 31 is executed via the formed tunnel. and the SUPL process between the WLAN terminal 10, so that there is no need to open a new TCP/IP or UDP/IP connection for performing the SUPL process between the location server 31 and the WLAN terminal 10, and can calculate by using the existing tunnel location information of the WLAN terminal 10 .

In addition, regarding the IP address of the WLAN terminal 10 (for example, set in the target terminal routing information), an inherent (permanent) IP address may be assigned to the WLAN terminal 10 whenever the tunnel is formed with the AP 21, or a dynamic IP address can be assigned to the WLAN terminal 10. When a proper IP address is assigned to the WLAN terminal 10, the assigned proper IP address is stored in the IISS/IILR 33, while a dynamic IP address is stored in the AAA server 32 whenever it changes. Therefore, if the intrinsic IP address is assigned to the WLAN terminal 10, when the service node routing information is requested by the location server 31 in step S27, in step S28, the HSS/HLR 33 can pass the stored IP address of the WLAN terminal 10 to The IP address of the WLAN terminal 10 is transmitted directly to the location server 31 . In this case, steps S29 and S30 can be omitted, and the location server 31 can immediately perform the SUPL process by using the IP address of the WLAN terminal 10 included in the service node routing information. Alternatively, steps S29 and S30 may be performed to obtain only certain information, such as tunnel information, which indicates whether the tunnel has been established. However, this information may be provided in the previous steps to completely omit steps S29 and S30 when the inherent IP address of the WLAN terminal 10 is included.

On the other hand, if the dynamic IP address of the WLAN terminal 10 is included, since the IP address of the WLAN terminal 10 usually changes whenever a tunnel is established between the WLAN terminal 10 and the PDG 21, steps S29 and S30 are performed as discussed above. That is to say, when a dynamic IP address has been assigned to the WLAN terminal 10, the location server 31 may know the IP address of the WLAN terminal 10 via the AAA server 32, as shown in steps S29 and S30.

This SUPL POS INTT message corresponds to a response message to the SUPL initial message transmitted from the location server 31. The SUPL INIT message, SUPL POS INIT message and other related SUPL process messages are known.

Accordingly, the present invention provides an efficient system and method for providing location information services to terminals by interworking a WLAN and a mobile communication network.

FIG. 4 is a flowchart illustrating a method for providing a location information service via interworking between a WLAN and a mobile communication network according to a second embodiment of the present invention. As an example, the method of FIG. 4 is described herein as being performed in the system of FIG. 2, but may be performed in other suitable devices/systems. The processing performed by the WLAN terminal 10 may be performed and/or controlled by the controller 10 a of the WLAN terminal 10 .

Referring to FIG. 4, the process in which the WLAN terminal 10 connects with the mobile communication network 30 via the authentication and registration process (steps S41-S43) is the same as or similar to steps S21-S23 in FIG. 3, respectively. Therefore, descriptions of steps S41 to S43 are omitted for the sake of brevity.

When a location information service request for requesting location information of a target terminal (for example, WLAN terminal 10) is generated by the client 40, the client 40 requests the location server (GMLC) 31 from the location server (GMLC) 31 by sending an LCS request to the location server 31. The location service (LCS) of the terminal (step S44).

In order to obtain information about the service node to which the target terminal belongs, the location server 31 then requests service node routing information (for example, address information of the AAA server 32) and capabilities of the target terminal from the HSS/HLR 33 (step S45). In this case, the capability information of the target terminal refers to the capability information of the target terminal related to location tracking, such as whether the target terminal supports SUPL, and/or whether the target terminal supports SUPL defined in the existing mobile communication network. location tracking process. Before connecting with the HSS/HLR 33, the location server 31 can connect with the PPR 34 to confirm the pre-registered location tracking service information and the private information of the target terminal such as the WLAN terminal 10. In this case, the WLAN terminal 10 can pre-register its private information related to the location tracking service on the PPR34, and after checking the private information, when the PPR34 allows the location tracking service requested by the client 40, the location server 31 may execute step S45.

Responding to the request at step S45, the HSS/HLR 33 transmits the service node routing information (for example, the address of the AAA server 32) of the WLAN terminal 10 and the capabilities of the WLAN terminal 10 to the location server 31 via the service node routing information confirmation message (step S45). S46).

If the WLAN terminal supports SUPL (for example, based on the received capability information of the target terminal), the location server 31 connects with the AAA server 32 by using the address of the AAA server 32 received from the HSS/HLR 33, and requests the WLAN from the AAA server 32. Routing information of the terminal 10 (step S47). The routing information of the WLAN terminal 10 includes at least the following: (i) the address (for example, IP address) of the WLAN terminal 10, and (ii) about the access point (for example, PDG21) to which the tunnel has been set up with the WLAN terminal 10 information (tunnel information). As discussed above, the tunnel information (ii) indicates whether the tunnel has been established between the WLAN terminal 10 and the PDG 21 . Alternatively, the routing information of the WLAN terminal 10 includes at least the following: (i) the IP address of the WLAN terminal 10, (ii) information about the access point (PDG) to which the tunnel has been set with the WLAN terminal 10 (tunnel information ), and (iii) information about the currently set wireless access point name (W-APN) of the WLAN terminal 10. The W-APN information (iii) includes a W-APN network identifier (NI) indicating the ID of the external IP network connected to the WLAN terminal 10 via the AP (PDG) 21, and a mobile communication network identifier (NI) indicating that the WLAN terminal 10 has been connected to it. The W-APN Operator Identifier (OI) of the ID of the network 30, and such information may be used as desired.

Responding to the request at step S47, the AAA server 32 then transmits a target terminal routing information query response message to the location server 31 (step S48). The terminal routing information inquiry response message includes requested information such as routing information of the target terminal (WLAN 10).

The location server 31 receives the target terminal routing information query response message. For example, based on the received target terminal routing information, when the location server 31 determines that an IP connection is not currently set, that is, when there is no tunnel connection between the WLAN terminal 10 and the PDG 21, the location server 31 generates a SUPL initial (SUPL INIT) message, And it transmits it to the WLAN terminal 10 by using the SMS (Short Message Service) method, or the WAP (Wireless Application Protocol) push method, thereby commanding data connection establishment (step S49). As another case, the location server 31 may transmit the SUPL initial message to the WLAN terminal 10 via a TCP/IP or UDP/IP connection.

Then, the WLAN terminal 10 obtains the access information (for example, IP address, etc.) of the AP 21 via DNS (Domain Name System) query to establish a data connection to receive the mobile communication packet service (step S50). The WLAN terminal 10 selects one of the access information of APs obtained via DNS query, and establishes a data connection (tunnel) with the selected AP (step S51). When selecting an AP, the WLAN terminal 10 selects an AP of an address type similar to its IP address.

After having established a tunnel between the WLAN terminal 10 and the AP (PDG) 21, such as an IP connection (for example, a TCP/IP or UDP/IP connection), the WLAN terminal 10 responds to the SUPLINIT message via the established tunnel, that is, via the session , the SUPL position initial (SUPL POS INIT) message for starting the actual position tracking process is transmitted to the position server 31. In this case, the WLAN terminal 10 may transmit its IP address together with or in the SUPL POS INIT message. Thereafter, the SUPL process for tracking the position of the WLAN terminal 10 is continuously performed via the dialog (step S52). When the location information of the WLAN terminal 10 is calculated (for example, by the location server 31 or the WLAN terminal 10), the location server 31 obtains the calculated location information, terminates the SUPL process, and responds to the calculated WLAN terminal 10 to be obtained, for example, via the LCS The location information of is transmitted to the client 40 (step S53).

Regarding the IP address of the WLAN terminal 10 , an inherent (permanent) IP address may be assigned to the WLAN terminal 10 every time a tunnel is formed with the AP 21 , or a dynamic IP address may be assigned to the WLAN terminal 10 . When a proper IP address is assigned to the WLAN terminal 10, the assigned proper IP address is stored in the HSS/HLR 33, while a dynamic IP address can be stored in the AAA server 32 whenever it changes.

In the state where the WLAN terminal 10 has completed the verification and registration process via the AAA server 32 and the HSS/HLR 33 of the mobile communication network 30, when the location server 31 connected to the mobile communication network 30 receives the location for the WLAN terminal 10 from the client 40 At the time of information request, according to the second embodiment of the present invention, a tunnel for packet service (for example, TCP/IP or UDP/IP connection) is not formed between WLAN terminal 10 and AP 21, for example, when checking target terminal route After the information, the AAA server 32 notifies the location server 31 that no tunnel is set between the WLAN terminal 10 and the AP 21 . Then, the location server 31 commands the establishment of a data connection between the WLAN 10 and the AP 21 by transmitting a SUPL initial message to the WLAN terminal 10 . Then, the WLAN terminal 10AP21 establishes a data connection (tunnel), and transmits the SUPL POS initial message to the location server 31 via the set data connection, ie, the session. Therefore, the location information of the WLAN terminal 10 can be calculated or obtained through the location server 31 of the mobile communication network 30 .

FIG. 5 is a flowchart illustrating a method for providing a location information service via interworking between a WLAN and a mobile communication network according to a third embodiment of the present invention. As an example, the method of FIG. 5 is described herein as being performed in the system of FIG. 2, but may be performed in other suitable devices/systems. The processing performed by the WLAN terminal 10 may be performed and/or controlled by the controller 10 a of the WLAN terminal 10 .

Referring to FIG. 5, the WLAN terminal 10 selects an appropriate WLAN AN11 that is currently accessible, and tries to connect to it. When the WLAN terminal 10 is connected with the WLAN AN11 (step S61), the WLAN AN11 and the WLAN terminal 10 perform an authentication process (steps S62 and S63). For example, the WLAN AN11 transmits an EAP (Extensible Authentication Protocol) request message to the WLAN terminal 10 (step S62), and the WLAN terminal 10 responds to the WLAN via an EAP response message (step S63). Other types of authentication protocols may be used.

Then, the WLAN AN11 and the WLAN terminal 10 exchange terminal location-related information with each other. When the WLAN AN11 provides the terminal location-related information to the WLAN terminal 10 via the EAP request message in step S62, the terminal location-related information includes the location information of the WLAN AP that the WLAN terminal 10 has currently visited. Then, as a response, if the WLAN terminal 10 includes a GPS receiver, which can be used to determine the location information of the WLAN terminal 10, when the WLAN terminal 10 provides the terminal location-related information to the WLAN AN11 via the EAP response message in step S63, the The terminal location-related information includes location information of the WLAN terminal 10 . Therefore, each of the WLAN terminal 10 and the WLAN AN 11 obtains the location information of the associated WLAN AP and the WLAN terminal 10, respectively.

Here, the AP location information or the WLAN terminal location information can have a civil address form defined in the IETF GEOPRIV protocol, or coordinate information (x, y, z). Fig. 6 shows an example of a civil address form defined in the IETF, which can be used in the present invention.

The WLAN AN11 performs an authentication process on the WLAN terminal via communication with the AAA server 32. That is, WLAN AN11 transmits the EAP response message that has been received from WLAN terminal 10 to AAA server 32 (step S64). This EAP response message is transmitted to the AAA server 32 via an AAA proxy server (not shown) in the case of roaming of the WLAN terminal 10 . In this case, the WLAN AN 11 provides information related to the location of the terminal, for example, the location information of the AP to which the WLAN terminal 10 belongs, and/or the location information of the WLAN terminal 10 received directly from the WLAN terminal 10 together with the EAP response message. 32 to the AAA server.

In order to perform a mutual authentication process between the WLAN AN 11 and the WLAN terminal 10, the AAA server 32 can be connected with the HSS/HLR 33 to fetch the authentication information stored in the IISS/HLR 33. The authentication information may be an authentication vector, ie, the AAA server 33 has been pre-registered to authenticate the WLAN terminal 10, which may include key information. In addition, the AAA server 32 can also request and receive subscription information of the WLAN terminal 10 from the HSS/HLR 33 by connecting with the HSS/HLR 33 (step S65). The subscription information may be license information, a permanent identifier (for example, IMSI) of the WLAN terminal 10, terminal capabilities, and the like.

The AAA server 32 registers the information of the WLAN terminal 10, for example, the permanent identity (eg, IMSI) of the WLAN terminal 10, by interworking with the HSS/HLR 33. In this case, the AAA server 32 also registers its address, which has been subjected to the authentication process by the WLAN terminal 10, together. In addition, the AAA server 32 can register terminal location-related information (for example, the location information of the WLAN terminal 10 received from the WLAN AN11, and/or the location information of the WLAN AP to which the WLAN terminal 10 belongs) to the HSS/HLR 33 (step S66) . Therefore, the HSS/HLR 33 stores therein information related to the location of the terminal, which is certain location information related to the WLAN terminal, for example, the actual location information of the WLAN terminal 10, and/or the location information of the WLAN AP to which the WLAN terminal 10 belongs .

When the verification/registration process (step S67) is successfully completed, the AAA server 32 notifies the WLAN terminal via the I-WLAN AN11 of the completion of the verification/registration process (steps S68, S69).

The WLAN terminal 10 obtains access information (IP address, etc.) of the AP via DNS query to receive the mobile communication packet service via the AP (step S70). The WLAN terminal 10 selects one of the AP's access information obtained via DNS query, and then forms a tunnel with the selected AP (PDG) 21 for supporting a packet service, such as an IP connection (for example, TCP/IP or UDP/IP connection) (step S71). When selecting an AP, the WLAN terminal 10 may select an AP having a similar type of address (for example, IPv4 or IPv6) to its IP address.

Thereafter, when the location information service request for requesting the location information of the target terminal (for example, the WLAN terminal 10) is generated by the client 40, the client 40 sends an LCS request to the location server (GMLC) 31, and from the location server 31 requests location information of the tracking target terminal (step S72). Here, the request for the location information of the target terminal includes a QoP (Quality of Positioning) request/information.

In order to obtain information (for example, an address) about the service node to which the target terminal (WLAN terminal 10) belongs, and in order to obtain information about the capabilities of the target terminal, the location server 31 sends an inquiry of service node routing information to the HSS/HLR 33 (step S73). In this case, the capability information of the target terminal refers to the capability information of the target terminal related to location tracking, such as whether the target terminal supports SUPL, and/or whether the target terminal supports SUPL defined in the existing mobile communication network. location tracking process. Before being connected with HSS/HLR 33, this location server 31 can be connected with PPR 34, to confirm the location tracking service information of pre-registration and the secret information of target terminal such as WLAN terminal 10. In this case, the WLAN terminal 10 can pre-register its private information related to the location tracking service on the PPR 34, and after checking the private information, when the PPR 34 allows the location tracking service requested by the client 40, the The location server 31 may execute step S73. The target terminal, that is, the user of the WLAN terminal 10 can pre-register private information related to the user's location tracking service, and in this state, when the user allows the location tracking service requested by the corresponding client 40, the location server 31 Step S73 can be executed.

In response to the request at step S73, the HSS/HLR 33 transmits the service node routing information (for example, the address of the AAA server 32) related to the WLAN terminal 10 and the capability information of the WLAN terminal 10 to the location via the service node routing information response message server 31 (step S74). At this point, the HSS/HLR 33 also provides all terminal location-related information received from the WLAN AN11 (and stored therein at step S66) via the service node routing information response message (step S74). Here, the terminal location-related information includes location information of the WLAN AP to which the WLAN terminal 10 belongs, and/or location information of the WLAN terminal 10. If the terminal location-related information is included in the service node routing information response message, and the included terminal location-related information satisfies the QoP (Quality of Positioning) included in the location tracking (LCS) request received from the client 40 at step S72 , the positioning server 31 provides the location information of the WLAN terminal 10 to the client 40 based on the received terminal location-related information (step S78), without performing steps S75-S77.

That is, the location server 31 analyzes the service node routing information response message received from the HSS/HLR 33. If the service node routing response message does not have terminal location related information, or if the included terminal location related information does not satisfy the QoP information identified in the LCS request, the process proceeds from step S74 to step S75 and the subsequent SUPL process. However, if the terminal location-related information from HSS/HLR 33 (for example, the WLAN terminal 10, or the location information of the WLAN AP) satisfies QoP (that is, the location information has sufficient quality), then the WLAN terminal 10 is not calculated. For location information, the location server 31 only transmits the obtained terminal location-related information to the client 40 as the location information of the target terminal in step S78. In this case, the method skips the steps S75-S77 of actually calculating the location of the target terminal via the SUPL procedure.

Furthermore, when the location server 31 wants to connect with the AAA server 32 to directly receive the routing information of the target terminal (WLAN terminal 10) recorded in the AAA server 32, the process proceeds from step S74 to step S75.

At step S75, the location server 31 transmits a target terminal routing information inquiry message for requesting routing information of the target terminal to the AAA server 32. The location server 31 can then obtain the routing information of the WLAN terminal 10 in step S76 in order to directly perform the SUPL procedure with the WLAN terminal 10 . In addition, if the service node routing information response message received from the HSS/HLR 33 in step S74 does not include terminal location-related information, the location server 31 may request terminal location-related information from the AAA server 32 via the target terminal routing information query message in step S75. Information.

In case of receiving the target terminal routing information query message, the AAA server 32 transmits the target terminal (WLAN terminal 10 ) routing information to the location server 31 via the target terminal routing information query response message. Here, the routing information of the WLAN terminal 10 includes at least the following: (i) the address (for example, IP address) of the WLAN terminal 10, and (ii) the access point (PDG 21 ) to which the tunnel has been set with the WLAN terminal 10. ) information (tunnel information), for example, at step S71. As discussed above, the tunnel information (ii) indicates whether the tunnel has been established between the WLAN terminal 10 and the PDG 21 . Alternatively, the routing information of the WLAN terminal 10 includes at least the following: (i) the IP address of the WLAN terminal 10, (ii) information about the access point (PDG) to which the tunnel has been set with the WLAN terminal 10 (tunnel information ), and (iii) information about the currently set wireless access point name (W-APN) of the WLAN terminal 10. The W-APN information (iii) includes a W-APN network identifier (NI) indicating the ID of the external IP network connected to the WLAN terminal 10 via the AP (PDG) 21, and a mobile communication network identifier (NI) indicating that the WLAN terminal 10 has been connected to it. The W-APN Operator Identifier (OI) of the ID of the network 30, and such information may be used as desired.

And if the location server 31 requests terminal location-related information to the AAA server 32 at step S75 (for example, because it was not received at step S74), the AAA server 32 combines the terminal location-related information with the target terminal routing information at step S76 (if any) are provided to the location server 31 together. At this time, if it is determined that the information related to the terminal location is received from the AAA server 32 and meets the QoP information received from the client 40 or from another entity, the location server 31 does not need to perform step S77, and the location information service response message via the location information service The received terminal location-related information (for example, the location information of the WLAN terminal 10, or the WLAN AP of the WLAN terminal 10) is directly transmitted to the client 40 as the location information of the WLAN terminal 10 (step S78). However, if the requested terminal location-related information is not received from the AAA server 32, or the terminal location-related information received from the AAA server 32 does not satisfy the QoP, or the location server 31 wants to The location tracking process is directly performed, and then the location server 31 starts the SUPL process by using the IP address of the WLAN terminal 10 included in the target terminal routing information inquiry response message received from the AAA server 32 . If the location server 31 determines that a tunnel has been formed between the WLAN terminal 10 and the AP 21 by checking the AP information (tunnel information) included in the target terminal routing information query response message, the location server 31 via the established tunnel, such as, TCP/ The IP or UDP/IP connection transmits a SUPL INIT message for starting the SUPL process (S77). Here, the SUPL procedure of step S77 may be any existing SUPL procedure or the SUPL procedure of FIG. 1 including the use of the SLP mode indicator. This SUPL process is continuously performed via the tunnel, thereby calculating the location information of the WLAN terminal 10 . Alternatively, the WLAN terminal 10 can also directly use the information related to the terminal location (when the verification process is performed with the WLAN AN11 on steps S62 and S63, it has been provided The verification process) is transmitted to the location server 31.

When, for example, the location server or WLAN terminal 10 calculates the location information of the WLAN terminal 10 in step S77, the location server 31 obtains the calculated location information (posresult) of the WLAN terminal 10, terminates the SUPL process, and uses the calculated WLAN The location information of the terminal 10 is provided to the client 40 (step S78). As another case as discussed above, if the terminal location-related information is provided from the WLAN terminal 10, and the provided terminal location-related information satisfies the QoP, the location server 31 may use the received terminal location-related information as the location of the target terminal Information (for example, without separately calculating the location of the target terminal) is provided to the client 40 .

When the WLAN terminal 10 is connected with the WLAN AN11, it can receive the location information of the WLANAP to which the WLAN terminal 10 belongs from the WLANAN11, or by having a GPS receiver, and the WLAN terminal 10 can provide its location information to the WLAN AN11. As discussed above, when the WLAN terminal 10 performs authentication and registration via the AAA server 32 and the HSS/HLR 33, the location information of the WLAN AP to which the WLAN terminal 10 belongs, or the location information of the WLAN terminal 10 is stored in the AAA server 32, Then store in IISS/IILR 33. In the state where the tunnel for the packet service has been formed between the WLAN terminal 10 and the AP 21, when the location server 31 connected to the mobile communication network 30 receives a location information request for the WLAN terminal 10 from the client 40, according to In the third embodiment of the present invention, if the terminal location-related information received by the HSS/HLR33 or AAA server 32 satisfies a certain QoP, the location server 31 immediately provides the terminal location-related information to the client 40 without performing the SUPL process for practical use. Calculate the location information. On the other hand, if the terminal location-related information does not satisfy the QoP, the location server 31 performs a SUPL procedure with the WLAN terminal 10 via the tunnel that has been formed between the WLAN 10 and the AP.

In addition, regarding the IP address of the WLAN terminal 10 , an inherent (permanent) IP address may be assigned to the WLAN terminal 10 every time a tunnel is formed with the AP 21 , or a dynamic IP address may be assigned to the WLAN terminal 10 . When a proper IP address is assigned to the WLAN terminal 10, the assigned proper IP address is stored in the HSS/HLR 33, while a dynamic IP address can be stored in the AAA server 32 whenever it changes. Therefore, if the inherent IP address is assigned to the WLAN terminal 10, when the service node routing information is requested by the location server 31 in step S73, in step S74, the HSS/HLR 33 can pass the stored IP address of the WLAN terminal 10 to The IP address of the WLAN terminal 10 is transmitted directly to the location server 31 . In this case, steps S75 and S76 can be omitted, and the location server 31 can immediately perform the SUPL procedure by using the IP address of the WLAN terminal 10 included in the service node routing information. Alternatively, steps S75 and S76 may be performed to obtain only certain information, such as tunnel information, which indicates whether a tunnel has been established. However, this information may be provided in the previous steps to completely omit steps S75 and S76 when the inherent IP address of the WLAN terminal 10 is included.

On the other hand, if the dynamic IP address of the WLAN terminal 10 is included, steps S75 and S76 are performed as discussed above, because the IP address of the WLAN terminal 10 usually changes whenever a tunnel is established between the WLAN terminal 10 and the PDG 21. That is to say, when a dynamic IP address has been assigned to the WLAN terminal 10, the location server 31 can know the IP address of the WLAN terminal 10 via the AAA server 32, as shown in steps S75 and S76.

FIG. 7 is a flowchart illustrating a method for providing a location information service via interworking between a WLAN and a mobile communication network according to a fourth embodiment of the present invention. As an example, the method of FIG. 7 is described herein as being performed in the system of FIG. 2, but may be performed in other suitable devices/systems. The processing performed by the WLAN terminal 10 may be performed and/or controlled by the controller 10 a of the WLAN terminal 10 .

Referring to FIG. 7, after going through the verification and registration process via the AAA server 32 and the HSS/HLR 33, the process of WLAN terminal 10 being connected to mobile communication network 30, and the process when WLAN terminal 10 is verified or registered is in the same manner as in FIG. Steps S61-S69 of 5 are performed in the same or similar manner, the location information of the WLAN terminal 10 is provided by the WLAN terminal 10 itself (for example, by using an internal GPS receiver), or the location information of the WLAN AP to which the WLAN terminal 10 belongs is provided by WLAN AN 11 (steps S81-S89). Therefore, for the sake of brevity, the description of steps S81-S89 will be omitted.

In addition, the following process is also performed in the same or similar manner as steps S72, S73, and S74 of FIG. When the request for location information was transmitted from the client 40 to the location server 31 (step S90), the location server 31 was connected with the HSS/HLR 33 to receive the service node routing information relevant to the target terminal and the performance information of the target terminal (step S90). S90-S92). Therefore, for the sake of brevity, the description of steps S90-S92 will be omitted.

To supplement the explanation, when the terminal location-related information received from the HSS/HLR 33 in step S92 satisfies the QoP included in the LCS received from the client 40, the location server 31 immediately uses the terminal location-related information as the target terminal The location information of (WLAN terminal 10) is provided to the client 40 (step S99), thereby skipping steps S93-S98 as much as possible.

However, after step S92, if the terminal location-related information is not provided from the HSS/HLR 33, or if the provided terminal location-related information does not satisfy the QoP, the location server 31 executes step S93. And, if the location server 31 wants to connect with the AAA server 31 to directly receive the routing information of the target terminal (WLAN terminal 10 ) recorded in the AAA server 32, step S93 is also executed.

The location server 31 transmits a target terminal routing information query message for requesting routing information of the target terminal to the AAA server 32 (S93).

The location server 31 can obtain the routing information of the WLAN terminal 10 in step S94, so as to directly execute the SUPL process with the WLAN terminal 10. In addition, if at step S92, the service node routing information response message received from the HSS/HLR 33 does not include terminal location-related information, the location server 31 may request terminal location-related information from the AAA server 32 via the target terminal routing information query message at step S93. Information.

Upon receiving the target terminal routing information query message, the AAA server 32 transmits the routing information of the target terminal (WLAN terminal 10) to the location server 31 via the target terminal routing information query response message (S94). Here, the routing information of the WLAN terminal 10 includes at least the following: (i) the address (for example, IP address) of the WLAN terminal 10, and (ii) the access point (PDG 21 ) to which the tunnel has been set with the WLAN terminal 10. ) information (tunnel information). As discussed above, the tunnel information (ii) indicates whether a tunnel has been established between the WLAN terminal 10 and the PDG 21 . Alternatively, the routing information of the WLAN terminal 10 includes at least the following: (i) the IP address of the WLAN terminal 10, (ii) information about the access point (PDG) to which the tunnel has been set with the WLAN terminal 10 (tunnel information ), and (iii) information about the currently set wireless access point name (W-APN) of the WLAN terminal 10. The W-APN information (iii) includes a W-APN network identifier (NI) indicating the ID of the external IP network connected to the WLAN terminal 10 via the AP (PDG) 21, and a mobile communication network identifier (NI) indicating that the WLAN terminal 10 has been connected to it. The W-APN Operator Identifier (OI) of the ID of the network 30, and such information may be used as desired.

And if the location server 31 requests terminal location-related information to the AAA server 32 at step S93 (for example, because it has not been received at step S92), the AAA server 32 combines the terminal location-related information with the target terminal routing information at step S94 Provided to the location server 31 together. At this time, if it is determined that the information related to the terminal location is received from the AAA server 32 and satisfies the QoP, the location server 31 sends the information related to the terminal location via the location information service (LCS) response message without performing steps S95-S98. The information is directly transmitted to the client 40 as the location information of the WLAN terminal 10 (step S99). However, if the information related to the location of the terminal requested in step S94 is not received from the AAA server 32, or the information related to the location of the terminal received from the AAA server 32 does not satisfy the QoP, or the location server 31 wants to use the WLAN The SUPL process of the terminal 10 directly executes the location tracking process, and then the location server 31 orders the WLAN terminal 10 to set up a data connection (tunnel) to the location server 31 by transmitting a SUPL initial (SUPLINIT) message, by using the SMS method or WAP (Wireless Application protocol) push method to establish a data connection to the WLAN terminal 10 (step S95). As another case, the location server (GMLC) 31 may transmit the SUPL initial message to the WLAN terminal 10 via a TCP/IP or UDP/IP connection (S95).

When receiving the SUPL initial message via the SMS method, WAP push method, TCP/IP or UDP/IP connection, or other technologies, the WLAN terminal 10 first obtains the access information (for example, IP address, etc.) of the AP via DNS query. etc.) to open the data connection with AP21 (step S96). The WLAN terminal 10 selects one of the access information of the APs obtained via the DNS query, and forms a data connection (tunnel) with the selected AP (step S97). When selecting the AP, the WLAN terminal 10 may select an AP having a similar type of address (for example, IPv4 or IPv6) to its IP address.

Thereafter, the WLAN terminal 10 is connected via a formed tunnel, such as an IP connection (for example, a TCP/IP or UDP/IP connection), that is, via a SUPL position initial (SUPL POS INIT) message that will be used to start the actual position tracking process via a dialog It is transmitted to the location server 31 (S98). In this case, the WLAN terminal 10 may include the IP address of the WLAN terminal 10 in the SUPL POS initial message. The WLAN terminal 10 can also directly transmit the information related to the terminal location received from the WLAN AN11 in steps S82 and S83 to the location server 31 via the established tunnel and the SUPL POS INIT message. The SUPL process is continuously performed between the WLAN terminal 10 and the location server 31 via dialogue at step S98.

When the location information of the WLAN terminal 10 is calculated via the SUPL process in step S98, the location server 31 obtains the location information of the calculated WLAN terminal 10, terminates the SUPL process (step S98), and responds to the calculated WLAN terminal 10 via the LCS, for example. The position information (posresult) of is provided to the client 40 (step S99). On the other hand, if the terminal location-related information is provided from the WLAN terminal 10, and the provided terminal location-related information satisfies the QoP, the location server 31 can directly provide the terminal location-related information as the location information of the target terminal to the client 40, Thus skipping the position calculation process as much as possible.

When the WLAN terminal 10 is connected with the WLAN AN11, it can receive the location information of the WLANAP to which the WLAN terminal 10 belongs from the WLANAN11, or by having a GPS receiver, and the WLAN terminal 10 can provide its location information to the I-WLANAN11. When the WLAN terminal 10 performs authentication and registration via the AAA server 32 and the HSS/HLR 33, the location information of the WLAN AP to which the WLAN terminal 10 belongs, or the location information of the WLAN terminal 10 is stored in the AAA server 32, and/or the HSS/HLR HLR33. In the state where a tunnel for packet service is not formed between the WLAN terminal 10 and the AP 21, if the location server 31 connected to the mobile communication network 30 receives a location information request for the WLAN terminal 10 from the client 40, according to the present invention In the fourth embodiment, then, the location server 31 immediately provides the terminal location-related information to the client 40, if the terminal location-related information is received by the HSS/HLR 33 or the AAA server 32 and satisfies the requirements received from the client 40 QoP for location tracking requests. On the other hand, if the information related to the location of the terminal is not received, or the information related to the location of the terminal received does not satisfy the QoP, the location server 31 initiates the SUPL via SMS method, WAP push method, TCP/IP or UDP/IP connection, etc. A message is sent to the WLAN terminal 10 to instruct the WLAN terminal 10 to establish a data connection (tunnel). When the WLAN terminal 10 establishes a data connection (for example, via IP connection) with the AP 21 according to the command, the location server 31 then performs a SUPL process with the WLAN terminal 10 via the established data connection to calculate the location information of the WLAN terminal 10.

In addition, regarding the IP address of the WLAN terminal 10 , an inherent (permanent) IP address may be assigned to the WLAN terminal 10 every time a tunnel is formed with the AP 21 , or a dynamic IP address may be assigned to the WLAN terminal 10 . When a proper IP address is assigned to the WLAN terminal 10, the assigned proper IP address is stored in the HSS/HLR 33, while a dynamic IP address can be stored in the AAA server 32 whenever it changes.

According to a preferred embodiment of the present invention, the WLAN terminal is a UE or a mobile terminal (but not limited thereto), which is capable of providing location information services, such as SUPL services. Examples of such WLAN terminals could be, but are not limited to, PT (Push to Talk) clients, mobile phones, UE (User Equipment) for UMTS etc., MS (Mobile Station) for GSM etc., laptops, PDAs (Personal Digital Assistant), various types of mobile terminals connected via WLAN or other networks, and the like. The PT client may be a PTT (push to talk) client, such as a PoC (push to talk over cellular) client, a PTV (push to view) client, a PTD (push to data) client, and the like.

According to the present invention, the same or similar steps exist in the first to fourth embodiments discussed here. Thus, other situations discussed in any one embodiment of the present invention can be applied to other embodiments of the present invention as required.

The methods of the present invention can be implemented in part by using existing computer programming languages. Such computer programs may be stored in portable or other types of memory, such as hard disks, RAM, ROM, PROM, etc., associated with one or more computers or computer-based devices, such as web servers and/or WLAN terminals 10 wait. Alternatively, such computer programs can be stored in different storage media, such as USB, magnetic disk, optical disk, magneto-optical disk, and the like. Such a computer program may also take the form of a signal transmitted over the Internet, extranet, intranet or other network and to a destination device (eg, a web server or WLAN 10 ) for storage and implementation. The computer program is readable using known computers or computer-based devices.

The above-described embodiments and advantages are merely exemplary and should not be construed as limiting the invention. The present teachings can be readily applied to other types of devices and/or systems. The description of the present invention is intended to be illustrative, not to limit the scope of the claims. Numerous alternatives, modifications and variations will be apparent to those skilled in the art. In those claims, all means-plus-function clauses are intended to cover the structures described therein as performing the recited function and not only structural equivalents but also equivalent structures.

Claims (75)

1. A wireless local area network (WLAN) terminal for providing reliable user plane location (SUPL) services, comprising: a controller that establishes an IP connection with the mobile communication network via interworking between the mobile communication network and the WLAN, and selectively performs and communicates with the mobile communication network via the IP connection in response to a location information request for the WLAN terminal from a location server. The SUPL process of the location server. 2. The WLAN terminal of claim 1, wherein, to establish the IP connection, the controller accesses the WLAN access network, and performs an authentication process with an authentication server of the mobile communication network via the WLAN access network. 3. The WLAN terminal according to claim 2, wherein the authentication procedure is an EAP (Extensible Authentication Protocol) procedure. 4. The WLAN terminal of claim 2, wherein the controller transmits the location information of the WLAN terminal to the authentication server via the WLAN access network during the authentication process. 5. The WLAN terminal of claim 2, wherein the controller receives location information of an access point of the WLAN to which the WLAN terminal belongs from the WLAN access network during the authentication process. 6. The WLAN terminal according to claim 1, wherein the IP connection is a TCP/IP connection or a UDP/IP connection. 7. The WLAN terminal of claim 1, wherein the mobile communication network is a 3GPP network, and the location server is a Gateway Mobile Location Center (GMLC). 8. The WLAN terminal of claim 1, wherein the controller receives the SUPL start message from the location server via the IP connection according to the SUPL procedure, and exchanges a next location procedure message with the location server. 9. A wireless local area network (WLAN) terminal for providing reliable user plane location (SUPL) services, comprising: a controller that receives a SUPL start message from a location server of the mobile communication network, and establishes an IP connection with the mobile communication network via interworking between the mobile communication network and the WLAN, and transmits the SUPL location start message to the location server via the IP connection . 10. The WLAN terminal of claim 9, wherein, as part of the interworking between the mobile communication network and the WLAN, the controller performs an authentication process with an authentication server of the mobile communication network via an access network of the WLAN. 11. The WLAN terminal according to claim 10, wherein the authentication procedure is an EAP (Extensible Authentication Protocol) procedure. 12. The WLAN terminal of claim 10, wherein the controller transmits location information of the WLAN terminal to the authentication server during the authentication process. 13. The WLAN terminal of claim 10, wherein the controller receives location information of an access point of the WLAN to which the WLAN terminal belongs from an access network of the WLAN during the authentication process. 14. The WLAN terminal according to claim 9, wherein the IP connection is a TCP/IP connection or a UDP/IP connection. 15. The WLAN terminal of claim 9, wherein the mobile communication network is a 3GPP network, and the location server is a Gateway Mobile Location Center (GMLC). 16. The WLAN terminal of claim 9, wherein the controller receives the SUPL start message using an SMS (Short Message Service) method or a WAP (Wireless Application Protocol) push method. 17. A method for providing reliable user plane location (SUPL) services using wireless local area network (WLAN) terminals, comprising: establishing an IP connection with the mobile communication network by the WLAN terminal via interworking between the mobile communication network and the WLAN; and A SUPL procedure is selectively performed with a location server of the mobile communication network via an IP connection in response to a request from the location server for location information of the WLAN terminal. 18. The method according to claim 17, further comprising: accessing the WLAN access network by the WLAN terminal, and The authentication process is performed via the WLAN access network using an authentication server of the mobile communication network. 19. The method according to claim 18, wherein the authentication procedure is an EAP (Extensible Authentication Protocol) procedure. 20. The method of claim 18, wherein the step of performing the verification process comprises: The location information of the WLAN terminal is transmitted by the WLAN terminal to the authentication server via the WLAN access network during the authentication process. 21. The method according to claim 18, wherein the step of performing the verification process further comprises: Location information of the access point of the WLAN to which the WLAN terminal belongs is received by the WLAN terminal from the WLAN access network during the authentication procedure. 22. The method according to claim 17, wherein, in the establishing step, the IP connection is a TCP/IP connection or a UDP/IP connection. 23. The method of claim 17, wherein, in the establishing step, the mobile communication network is a 3GPP network, and the location server is a Gateway Mobile Location Center (GMLC). 24. The method according to claim 17, wherein the step of selectively performing the SUPL process comprises: receiving a SUPL start message from a location server via an IP connection by the WLAN following SUPL procedures, and The next positioning procedure messages are exchanged with the location server. 25. A method for providing reliable user plane location (SUPL) services using a wireless local area network (WLAN) terminal, comprising: receiving a SUPL activation message from a location server of the mobile communication network by the WLAN terminal, and establishing an IP connection with the mobile communication network via interworking between the mobile communication network and the WLAN; and The SUPL Positioning Initiate message is transmitted by the WLAN terminal to the location server via the IP connection. 26. The method of claim 25, wherein, as part of the interworking between the mobile communication network and the WLAN, the method further comprises performing an authentication process with an authentication server of the mobile communication network via the access network of the WLAN. 27. The method according to claim 26, wherein the authentication procedure is an EAP (Extensible Authentication Protocol) procedure. 28. The method of claim 26, wherein the step of performing the verification process comprises: The location information of the WLAN terminal is transmitted by the WLAN terminal to the authentication server via the WLAN access network during the authentication process. 29. The method according to claim 28, wherein the step of performing the verification process further comprises: Location information of the access point of the WLAN to which the WLAN terminal belongs is received by the WLAN terminal from the WLAN access network during the authentication procedure. 30. The method of claim 25, wherein the IP connection is a TCP/IP connection or a UDP/IP connection. 31. The method of claim 25, wherein the mobile communication network is a 3GPP network and the location server is a Gateway Mobile Location Center (GMLC). 32. The method of claim 25, wherein the receiving step receives the SUPL start message using an SMS (Short Message Service) method or a WAP (Wireless Application Protocol) push method. 33. A method of providing a reliable user plane location (SUPL) service using a mobile communication network comprising a location server, comprising: establishing an IP connection with a wireless local access network (WLAN) terminal by the location server via interworking between the mobile communication network and the WLAN; and In response to a request from a client requesting location information of a WLAN terminal, a SUPL procedure is selectively performed with the WLAN terminal via the IP connection by the location server. 34. The method according to claim 33, further comprising: Before an IP connection is established, an authentication process with a WLAN terminal is performed by an authentication server of the mobile communication network. 35. The method according to claim 34, further comprising: storing authentication information related to the WLAN terminal in a database of the mobile communication network; and The stored authentication information is provided to an authentication server for the authentication process. 36. The method according to claim 35, after the verification process, the method further comprising: The verification server registers the performance information of the WLAN terminal and the address information of the verification server in the database. 37. The method according to claim 36, further comprising: The terminal location-related information is registered in the database by the verification server, and the terminal location-related information includes at least one of the following: location information of the WLAN terminal provided by the WLAN terminal via the access network of the WLAN during the authentication process; and Location information of the access point of the WLAN to which the WLAN terminal belongs. 38. The method according to claim 37, further comprising: Responding to the client's location information request, the location server requests service node routing information and WLAN terminal performance information from the database; and The requested information is received by the location server from the database. 39. The method according to claim 38, wherein the service node routing information received by the location server includes address information of the authentication server, and the capability information of the WLAN terminal received by the location server is related to the WLAN terminal supporting the SUPL procedure or other location determination Information about the performance of the process. 40. The method of claim 39, wherein the service node routing information received by the location server further includes terminal location-related information registered in the database. 41. The method according to claim 40, further comprising: determining by the location server whether the terminal location-related information included in the received service node routing information satisfies a QoP (Quality of Positioning) request included in the client's location information request; and Based on the determination result, information related to the location of the terminal is selectively provided from the location server to the client as location information of the WLAN terminal. 42. The method according to claim 41, wherein, in the step of selectively providing, if the received information related to the location of the terminal satisfies the QoP request, the location server directly uses the information related to the location of the terminal as the WLAN terminal without performing the SUPL procedure. The location information is transmitted to the customer. 43. The method according to claim 41, further comprising: If the information related to the location of the terminal does not satisfy the QoP request, the location server uses the received service node routing information in part to request the authentication server for the target terminal routing information. 44. The method according to claim 43, further comprising: The location server receives target terminal routing information from the verification server, and the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 45. The method according to claim 44, wherein the step of performing the SUPL procedure is implemented using the WLAN terminal via the established IP connection in part using the received target terminal routing information. 46. The method according to claim 36, further comprising: Responding to the client's location information request, the location server requests service node routing information and WLAN terminal performance information from the database; and The requested information is received by the location server from the database. 47. The method according to claim 46, wherein the service node routing information received by the location server includes address information of the authentication server, and the capability information of the WLAN terminal received by the location server is related to the WLAN terminal supporting the SUPL procedure or other location determination Information about the performance of the process. 48. The method according to claim 46, further comprising: The target terminal routing information is requested from the authentication server using the received service node routing information in part from the location server. 49. The method according to claim 48, further comprising: The location server receives target terminal routing information from the verification server, and the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 50. The method according to claim 49, wherein the step of performing the SUPL procedure is implemented by the WLAN terminal partly using the received target terminal routing information via the established IP connection. 51. A method of providing a reliable user plane location (SUPL) service using a mobile communication network comprising a location server, comprising: In response to a request from a client requesting location information of a WLAN terminal, a SUPL start message is selectively transmitted to a wireless local area network (WLAN) terminal by the location server, and an IP address is established with the WLAN terminal via interworking between the mobile communication network and the WLAN. connect; and A SUPL location start message is received by the location server from the WLAN terminal via the IP connection. 52. The method according to claim 51, further comprising: Before an IP connection is established, an authentication process is performed by an authentication server of a mobile communication network using a WLAN terminal. 53. The method according to claim 52, further comprising: The pre-stored authentication information related to the WLAN terminal is provided to the authentication server by the database of the mobile communication network for the authentication process. 54. The method according to claim 53, wherein, after the verification process, the method further comprises: The verification server registers the performance information of the WLAN terminal and the address information of the verification server in the database. 55. The method according to claim 54, further comprising: The terminal location-related information is registered in the database by the verification server, and the terminal location-related information includes at least one of the following: location information of the WLAN terminal provided by the WLAN terminal via the access network of the WLAN during the authentication process; and Location information of the access point of the WLAN to which the WLAN terminal belongs. 56. The method according to claim 55, further comprising: Responding to the client's location information request, the location server requests service node routing information and WLAN terminal performance information from the database; and The requested information is received by the location server from the database. 57. The method according to claim 56, wherein the service node routing information received by the location server includes address information of the authentication server, and the capability information of the WLAN terminal received by the location server is related to the WLAN terminal supporting the SUPL procedure or other location determination Information about the performance of the process. 58. The method of claim 57, wherein the serving node routing information received by the location server further includes terminal location related information. 59. The method according to claim 58, further comprising: determining by the location server whether the terminal location-related information included in the received service node routing information satisfies a QoP (Quality of Positioning) request included in the client's location information request; and Based on the result of this determination, information related to the location of the terminal is selectively provided from the location server to the client as location information of the WLAN terminal. 60. The method according to claim 59, wherein, if the received information related to the location of the terminal satisfies the QoP request, the selectively providing step directly transmits the information related to the location of the terminal as the location information of the WLAN terminal from the location server to the client, without performing the SUPL process. 61. The method according to claim 59, further comprising: If the terminal location-related information does not satisfy the QoP request, the location server requests target terminal routing information using the received serving node routing information in part. 62. The method according to claim 61, further comprising: The location server receives target terminal routing information from the verification server, and the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 63. The method of claim 61, wherein the step of selectively transmitting transmits the SUPL initiation message to the WLAN terminal using in part the received target terminal routing information. 64. The method according to claim 54, further comprising: In response to the client's request for location information, the location server requests service node routing information and performance information of the WLAN terminal from the database; and The requested information is received by the location server from the database. 65. The method according to claim 64, wherein the service node routing information received by the location server includes address information of the authentication server, and the capability information of the WLAN terminal received by the location server is related to the WLAN terminal supporting the SUPL procedure or other location determination Information about the performance of the process. 66. The method according to claim 64, further comprising: Target terminal routing information is requested from the location server to the authentication server using the received service node routing information in part. 67. The method according to claim 66, further comprising: The location server receives target terminal routing information from the verification server, and the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection presence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 68. The method of claim 67, wherein the step of selectively transmitting transmits the SUPL initiation message to the WLAN terminal using in part the received target terminal routing information. 69. A method of providing reliable user plane location (SUPL) services by interworking between a mobile communication network and a wireless local area network (WLAN), wherein the mobile communication network comprises an access point, a storage unit and a location server, and wherein Establishing an IP connection between a WLAN terminal and a location server via an access point, the method comprising: In response to the client's request for location information, the location server requests service node routing information from the storage unit; The location server receives the requested service node routing information from the database; The location server partially uses the received service node routing information to request the target terminal routing information from the verification server; receiving, by the location server, destination terminal routing information from the authentication server; and A SUPL procedure is performed with the WLAN terminal by the location server in part using the received target terminal routing information via the established IP connection, so as to obtain location information of the WLAN terminal. 70. The method according to claim 69, wherein, in the step of receiving target terminal routing information, the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, IP connection presence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 71. The method according to claim 69, further comprising: When requesting the service node routing information, the location server requests the capability information of the WLAN terminal from the storage unit; and When receiving the requested service node routing information, the requested capability information of the WLAN terminal is received by the location server from the database. 72. A method of providing reliable user plane location (SUPL) services by interworking between a mobile communication network and a wireless local area network (WLAN), wherein the mobile communication network comprises an access point, a storage unit and a location server, and wherein Establishing an IP connection between a WLAN terminal and a location server via an access point, the method comprising: requesting, by the location server, service node routing information from the storage unit in response to the client's request for location information; and The location server receives the requested service node routing information from the database, wherein the service node routing information received by the location server includes address information of the verification server and information related to the terminal location registered in the storage unit; The location server determines whether the received terminal location-related information satisfies the QoP (Quality of Positioning) request included in the client's location information request; selectively providing information related to the location of the terminal as location information of the WLAN terminal from the location server to the client based on the determination result; If the information related to the location of the terminal does not satisfy the QoP request, the location server partially uses the received service node routing information to request the verification server for the target terminal routing information; receiving, by the location server, destination terminal routing information from the authentication server; and The SUPL procedure with the WLAN terminal is performed by the location server in part using the received target terminal routing information via the established IP connection. 73. The method according to claim 72, wherein, in the step of receiving target terminal routing information, the target terminal routing information includes the following (a) or (b): (a) IP address information of the WLAN terminal, and IP connection existence information indicating whether an IP connection has been established between the WLAN terminal and the location server; or (b) IP address information of the WLAN terminal, and IP connection presence information indicating whether an IP connection has been established between the WLAN terminal and the location server, and W-APN information related to the WLAN terminal. 74. The method according to claim 72, wherein, in the step of selectively providing, if the received terminal location-related information satisfies the QoP request, the location server directly transmits the terminal location-related information as the location information of the WLAN terminal to the client , without performing the SUPL process. 75. The method according to claim 72, further comprising: When requesting the service node routing information, the location server requests the capability information of the WLAN terminal from the storage unit; and When receiving the requested service node routing information, the requested capability information of the WLAN terminal is received by the location server from the database.

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