KR100706342B1 - Method and system for providing location information through interworking between positioning systems - Google Patents

Abstract

The present invention relates to a mobile communication system, and more particularly, to a method and system capable of providing accurate location information of a mobile communication terminal through roaming abroad. If the location information providing system requests the location information of the target terminal, establishes a TCP connection with the target terminal, and requests the location information of the base station to which the target terminal belongs in the visited network for calculating the location information of the target terminal. The H-SLP, the V-SLP for calculating the location information of the base station to which the target terminal belongs, and transmitting the H-SLP to the H-SLP, and the TCP connection with the H-SLP. It includes a target terminal whose current position is calculated by one SUPL positioning process. Location-based services can be provided to or to subscribers of a home network located in a visited network through a positioning system interworking between a roaming connected home network and a visited network.

Positioning system, interlocking, SUPL, SLP, terminal

Description

Method and system for providing location information through interworking between positioning systems

1 is a view showing the configuration of a location-based service (LBS) roaming system of a home network for providing location information according to an embodiment of the present invention.

2 is a block diagram of a system for providing location information through roaming according to an embodiment of the present invention.

3 is a flow chart of a method for providing location information of a location requesting terminal itself located in a visited network using GPS according to an embodiment of the present invention.

4 is a flow chart of a SUPL roaming method when SET initiates a SUPL procedure.

5 is a flowchart illustrating a method for providing location information of a target terminal located in a visited network using GPS according to another exemplary embodiment of the present invention.

6 is a flow chart of a SUPL roaming method when the SLP starts a SUPL procedure.

The present invention relates to a mobile communication system, and more particularly, to a method and system capable of providing accurate location information of a mobile communication terminal through roaming abroad.

In the past, the mobile communication terminal was mainly used for a call, but recently, various additional functions such as text message transmission and large file transmission and reception are provided to the mobile communication terminal. Furthermore, various services are provided according to the location of the mobile communication terminal. Location-based services are provided.

Location Based Service (LBS) is a location information based system and service that utilizes mobile communication network such as mobile phone or PDA and IT technology. On the basis of this, not only product information but also traffic-related information and location tracking information are being applied throughout life.

For example, location-based services include traffic-related information such as driving convenience information, public transportation information path search and setting, and location tracking information may include location tracking, personal location information, and lost terminal tracking. In addition, the convenience information may include logistics, convenience services, telephone number services, local information, and the like, and the commerce information may provide services such as notification of desired products and location-based marketing / advertisement.

In addition, as the mobile communication terminal becomes lighter and shorter and the mobile communication network expands globally, mobile communication service users carry their mobile communication terminals while traveling and use calls and other supplementary services using their mobile communication terminals. I want to: Under the environment of global mobile communication system, many users want to receive the above location-based services, and in some countries or mobile communication network areas (for example, Korea mobile communication network area such as SK Telecom or KTF, NTT DoCoMo, Sprint PCS, KDDI, Vodafone, etc.) , Gumi region, mobile communication network, etc.) has commercialized their own location information acquisition system using such a mobile communication terminal.

In order to provide a location based service, a process of determining a location of a mobile communication terminal must be preceded. That is, the location-based service is created based on geographical position information of the mobile communication terminal obtained during the location determination of the mobile communication terminal.

In order to obtain geographical location information of the mobile communication terminal, the mobile communication terminal must be provided with a location determination service regardless of the location of the mobile communication terminal. That is, regardless of whether the mobile communication terminal is in a home network area or a roaming area, that is, a visited network, a location service must be provided. Here, the home network refers to a network in which a mobile communication service provider to which a mobile communication terminal is basically subscribed provides a mobile communication service, and the visited network refers to a service other than a mobile communication service company to which a mobile communication terminal is subscribed. As a providing network, a network in which a mobile communication terminal is currently located.

Methods of determining the location of a mobile communication terminal (hereinafter referred to as UE) in a mobile communication network are various, and are as follows.

First, the position of the mobile communication terminal (UE) is determined using information of a cell closest to the position of the mobile communication terminal (UE) or information of a cell managing the mobile communication terminal (UE). How to determine in units.

Second, the strength of the transmission and reception signal between the base station (node B) and the mobile communication terminal (UE), the time of arrival of the radio wave transmitted from the base station (node B) to the mobile communication terminal (UE) TOA ') or a time difference of arrival (hereinafter referred to as' TDOA') between a plurality of base stations (node B) and a mobile communication terminal (UE), and the TOA or TDOA is calculated by triangulation. A network-based location determination method for determining a location of a mobile communication terminal (UE) by applying.

Third, a method of determining the position of a mobile communication terminal (UE) using a GPS (Global Positioning System, hereinafter referred to as 'GPS') developed by the US Department of Defense.

In providing a location-based service to a mobile communication terminal using location determination methods as described above, a roaming network among methods and systems for providing location information through an interworking system between positioning systems between roaming mobile communication networks, in particular, WCDMA networks There is no method and system for providing location information through a direct connection between a mobile communication terminal located at and a positioning system of a home network.

Accordingly, the present invention provides a method and system for providing location information through roaming that can provide location-based services to or to subscribers of a home network located in a visited network through interworking with a roaming connected home network and a visited network. To provide.

In addition, the present invention provides a location information when the subscriber of the WCDMA network is located in the visited network other than the home network, location information through roaming to provide the location information by directly connecting the mobile communication terminal and the positioning system of the home network Provides a method and system.

Other objects of the present invention will be readily understood through the following description.

In order to achieve the above object, according to an aspect of the present invention, a Secure User Plane Location (SUPL) based location information system comprising a V-SLP (Visited SUPL Location Platform), H-SLP (Home SLP) and a target terminal A method of providing location information in the H-SLP, the method comprising: (a) receiving a SUPL START message from the target terminal; (b) identifying the visited network to which the target terminal belongs by searching the routing information of the target terminal; (c) requesting location information of a base station serving an area where the target terminal is located in the visited network by transmitting a Roaming Location Protocol (RLP) Standard Roaming Location Immediate Request (RLIR) message to the V-SLP of the visited network; Doing; (d) receiving an RLP SRLIA message in response to the RLP SRLIR message from the V-SLP to obtain location information of the base station; (e) transmitting a SUPL RESPONSE message to the target terminal in response to the SUPL START message; (f) receiving a SUPL INIT message from the target terminal; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting a SUPL END message to the target terminal to inform the termination of the SUPL procedure.

Preferably, the H-SLP and the target terminal may have a TCP connection established.

In order to achieve the above objects, according to another aspect of the present invention, a method for providing location information in a home network roaming with a visited network and including a home positioning system (A) receiving a request for providing location information of a target terminal from the location request terminal; (b) determining whether the target terminal is located in the visited network; (c) transmitting the access information of the home positioning system to the target terminal when the target terminal is located in the visited network as a result of the determination; (d) establishing a TCP connection for performing a SUPL procedure between the home positioning system and the target terminal according to the access information; (e) requesting location information of a base station where the target terminal is located from the visited positioning system of the visited network by a SUPL procedure start request from the target terminal; (f) receiving location information of the base station corresponding to the request from the visited positioning system; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting location information of the target terminal to the location request terminal, thereby providing location information providing method through interworking between positioning systems.

Preferably, the location request terminal and the target terminal may be the same. Here, step (b) may include obtaining network information of the target terminal from a dual gateway mobile location center (DGMLC). The location information providing request of step (a) includes current location network information of an HTTP header, and step (b) determines whether the target terminal is in the visited network based on the current location network information. You can judge. The home network includes a Geographic Information Service Platform (GISP), and the step (h) includes requesting map information corresponding to the location information of the target terminal from the map information service platform; And generating a page including the location information of the target terminal and the map information and transmitting the generated page to the location requesting terminal.

In order to achieve the above object, according to another aspect of the present invention, the SUPL based location information system including a SUPL agent, a requesting SLP (R-SLP), V-SLP, H-SLP and a target terminal In the method of providing location information in H-SLP, (a) the SUPL agent transmits a Mobile Location Protocol (MLP) Standard Location Immediate Request (SLIR) message requesting the location information of the target terminal to the R-SLP. step; (b) the R-SLP transmitting the MLP SLIR message to the H-SLP to which the target terminal belongs; (c) checking, by the H-SLP, whether the target terminal supports the SUPL function and is located in a roaming service area; (d) if the target terminal supports a SUPL function and is in a roaming service area, the H-SLP sends a SUPL INIT message to the target terminal to start a SUPL procedure with the target terminal and establish a TCP connection; (e) the H-SLP receiving base station information from the target terminal; (f) the H-SLP requesting the V-SLP for location information of the base station corresponding to the base station information; (g) the H-SLP receiving location information of the base station in response to the request; (h) the H-SLP performing a SUPL procedure with the target terminal to calculate location information of the target terminal based on the location information of the base station; (i) the H-SLP transmitting a SUPL END message to the target terminal to notify the end of the SUPL procedure; (j) the H-SLP transmitting location information of the target terminal to the R-SLP; And (k) the R-SLP may provide a method for providing location information through interworking between positioning systems, including transmitting location information of the target terminal to the SUPL agent.

In order to achieve the above objects, according to another aspect of the present invention, a method for providing location information in a home network roaming connection with a visited network, including a home positioning system, comprising: (a) from a location request terminal to a target terminal; Receiving a request for providing location information of a; (b) determining whether the target terminal is located in the visited network; (c) transmitting a short message for starting a SUPL procedure to the target terminal when the target terminal is located in the visited network as a result of the determination; (d) establishing a TCP connection between the home positioning system and the target terminal to perform a SUPL procedure corresponding to the short message; (e) requesting location information of a base station where the target terminal is located from the visited positioning system of the visited network; (f) receiving location information of the base station corresponding to the request from the visited positioning system; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting location information of the target terminal to the location request terminal, thereby providing location information providing method through interworking between positioning systems.

Preferably, the target terminal may be a terminal other than the location requesting terminal. The step (b) may include obtaining network information of the target terminal from a dual gateway mobile location center (DGMLC). have. The location information providing request of step (a) includes current location network information of an HTTP header, and step (b) determines whether the target terminal is in the visited network based on the current location network information. can do. The home network may include a map information service platform (GISP), and the step (h) may include requesting map information corresponding to the location information of the target terminal from the map information service platform; And generating a page including the location information of the target terminal and the map information and transmitting the generated page to the location requesting terminal.

In order to achieve the above object, according to another aspect of the present invention, in the SUPL-based location information providing system for providing a SUPL service through a direct connection between the home positioning system of the home network and the target terminal, the location of the target terminal An H-SLP for establishing a TCP connection with the target terminal and requesting the location information of the base station to which the target terminal belongs in the visited network for calculating the location information of the target terminal if the information is required; A V-SLP that calculates location information of a base station to which the target terminal belongs and transmits the location information to the H-SLP; And a target terminal in which a TCP connection is established with the H-SLP and a target terminal whose current position is calculated by a SUPL location positioning process based on the location information of the base station. Can be.

Preferably, the SUPL procedure may be started by the H-SLP or the SUPL procedure may be started by the target terminal.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the method and system for providing location information through interworking between the positioning system according to the present invention. In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Numbers (eg, first, second, etc.) used in the description of the present specification are merely identification symbols for sequentially distinguishing identical or similar entities.

In the present invention, the terminal requesting to provide location information is defined as a location requesting terminal, and a terminal that is a target of location tracking is defined as a target terminal. The target terminal is a mobile communication terminal available in the WCDMA network.

1 is a diagram illustrating a configuration of a location based service (LBS) roaming system (hereinafter, referred to as an 'LBS roaming system') of a home network providing location information according to an exemplary embodiment of the present invention. The home network will be described based on KTF's Korean mobile communication network, but it will be apparent to those skilled in the art that it is applicable to other mobile communication networks.

As shown in FIG. 1, the LBS roaming system according to the present invention may be classified into a CDMA network (2G network) and a WCDMA network (3G network), and located in mobile communication terminals 100 and 101 belonging to each network. Provides base services.

First, referring to the CDMA network, the mobile communication terminal (UE) 100 is wirelessly connected to the mobile communication network through a base transceiver system (BTS) 102 and a base station controller (BSC, 104). 104 is connected to a Mobile Switching Center (MSC) 108.

The base station 102 performs a wireless connection with the mobile communication terminal 100 and a wired / wireless connection function between the mobile communication terminal 100 and the base station controller 104, and the base station controller 104 is connected to the base station 102 and the mobile communication switchboard. It is located between 108 and is responsible for base station management and control.

The mobile communication switch 108 is for providing mobile communication services to mobile communication subscribers, and has functions such as circuit switching between subscribers, incoming and outgoing relay processing, handover, and roaming, and a VLR (Visitor Location Register) database. Manage it.

On the other hand, PDSN / IWF (Packet Data Serving Node / Inter-Working Function) 106, which provides packet data service to the mobile communication terminal, is connected to the base station controller 104 to provide a Point-to-Point Protocol (PPP) session for the subscriber. Follow the setup, maintenance and shutdown process.

In the CDMA network, the PDSN / IWF 106 is connected to a Position Determination Entity (PDE) 110, and the PDE 110 has a function of receiving a GPS signal, so that the GPS terminal belonging to the CDMA network, i.e., mobile communication with GPS function, is supported. It performs a positioning function of the terminal 100, and provides the GPS-based position information in the 2G network to the MPC (Mobile Positioning Center, 118).

The MPC 118 may request location information of a specific mobile communication terminal from the PDE 110, receive and cache location information of the terminal calculated by the PDE 110, and receive location-based services. Manage the terminal's authentication and user profiles.

In addition, the MPC 118 may receive not only GPS-based location information, but also base station information in a 2G / 3G network from a dual gateway mobile location center (DGMLC), wherein the DGMLC 116 ) Is connected to the MSC 108 in the 2G network, the MSC 109 in the 3G network and the Home Location Register (HLR) 114 to transmit base station information of the 2G and 3G networks to the MPC 118.

On the other hand, the subscriber accesses the service server (Service Server, 122) and requests the location information of the person or others, the service server 122, if there is a request for the location information of the subscriber, this is based on the Location Based Service Platform (LBSP) Service platform 120, the LBSP 120 requests the location information from the MPC 118, receives the location information provided by the MPC 118 and provides it to the subscriber.

Here, the LBSP 120 may be referred to as a receiving unit in that a location tracking service is started by receiving a subscriber's location request.

Next, referring to the WCDMA network (3G network), the mobile communication terminal 101 belonging to the WCDMA network is connected to the radio base station (Node B, 124), RNC (Radio Network Controller, radio network controller, 126) It processes a control signal transmitted from one radio base station 124 and controls radio access and handover.

Like the CDMA network, in the WCDMA network, the RNC 126 is connected to the mobile communication exchange 109 which manages the VLR database, and the mobile communication exchange 109 handles circuit traffic.

In the WCDMA network, packet data traffic is processed by a serving GPRS support node / gateway GPRS support node 128 (SSGN / GGSN) connected to the RNC 126.

GPS-based location calculation in the WCDMA network is handled by the Positioning Server (PS) 130. Significant signaling and location information must be passed between the mobile communication terminal 101 and the PS 130 for the location calculation. Recently, standardized location technologies (ie, location-based services based on the location of a mobile communication terminal) for providing location-based services are rapidly spreading. Such technologies may be generally provided through a user plane and a control plane. As an example, a secure user plane location (SUPL) providing a location service through the user plane is known. That is, the PS 130 performs a process of establishing a session with a target terminal, which is a target of a location request, using, for example, a Secure User Plane Location (SUPL) protocol, and latitude and longitude information (location information) of the target terminal. Perform the process of calculating.

As shown in FIG. 1, the PS 130 may include a Global Positioning Management System (GPMS) 132, a Location Based Service Operation & Management (LBS O & M), and one or more. It is connected to a Wireless Area Reference Network (WARN) 140 and 142 to calculate GPS-based location information of a mobile communication terminal in a 3G network and provide it to the MPC 118.

Here, the GPMS 132 is connected to the OSS Master Database (Operation Subsystem Master Database) 134, and the LBS O & M 136 is connected to the LBS O & M database server 138 so that the PS 130 can calculate the location information. To provide.

Here, WARN is to provide satellite information around the mobile communication terminal, WARN according to the present invention is provided with a WCDMA PDE in addition to the CDMA PDE can provide reference information for calculating the GPS-based location information in the WCDMA network Will be.

The location information providing service when the target terminal is on the home network will be described with reference to FIG. 1.

When the subscriber requests the location of the target terminal (owner or another terminal) through an application program installed in the mobile communication terminal, the service server 122 receives it and transmits it to the LBSP 120, where the LBSP 120 is located. When the target terminal to be tracked is authenticated, the MPC 118 requests the position of the target terminal.

The authentication may be performed through a mobile directory number (MDN) of the target terminal. If the authentication is successful, the International Mobile Subscriber Identity (IMSI) and model information of the target terminal (whether or not the GPS terminal) are transferred to the MPC 118. Delivered.

According to the present invention, since the DGMLC 116 has 2G and 3G base station information, the MPC 118 requests the subscriber's network information to the DGMLC 116 and receives the network information from the DGMLC 116.

Here, DGMLC may be used as the term network determination unit, it will be apparent to those skilled in the art that the name does not limit the present invention.

If the subscriber is in the 3G network, the MPC 118 requests location information from the PS 130, and the PS 130 informs the MPC 118 that it is ready to establish a session with the target terminal.

The session preparation may be completed by the PS 130 delivering the PS information including the URL and port information of the PS to the MPC 118.

Before the PS information is delivered to the target terminal, the LBSP 120 requests relocation to the MPC 118, whereby the target terminal and the PS 130 are interconnected.

According to the present invention, when the PS 130 interconnects with the target terminal, the PS 130 calculates the position of the target terminal, and the calculated position information is transmitted to the MPC 118 and the LBSP 120.

At this time, the terminal requesting the location information (location request terminal) re-requests the location information to the service server 122, the LBS roaming system according to the present invention after performing authentication for the re-request, the location result calculated above Transmits the location information to the requesting terminal.

In this case, the GISP (Geographic Information Service Platform, not shown) connected to the LBSP 120 corresponds to the calculated location result when there is a request for map information from the LBSP 120. Performs the function of providing map information.

On the other hand, when the target terminal is a terminal of another person, that is, the location requesting terminal requests to provide the location information for the other terminal, as in the above process, the target terminal is in the 3G network, MPC 118 to the PS 130 When requesting PS information, the PS 130 requests a short message (SMS) transmission to a message platform (MP) 112, and the MP 112 transmits a short message to a target terminal and transmits the result to the PS 130. To pass on.

Here, the MP 112 may include a Short Message Service Center (SMSC).

If the SMS transmission is successful, the PS 130 and the target terminal of the other person according to the present invention are connected to each other, accordingly, a location result calculation process is performed on the PS 130, and the first request for the location of another person is performed. When there is a re-request of a location at the location request terminal, the location result calculated by the PS 130 is provided to the location request terminal, and optionally, map information is provided together.

As described above, according to the present invention, the PS 130 that performs location positioning by interconnecting the DGMLC 116 including the base station information and the terminal belonging to the 3G network through the PS information (PS URL and port information). Since location information is provided by using), GPS-based location information can be provided in a WCDMA network.

Hereinafter, a system and a method for receiving location information when the target terminal is located in a roaming visited network, not a home network, which is originally registered, will be described in detail. The home network and the visited network are assumed to be roaming based on the 3G network.

2 is a block diagram of a system for providing location information through roaming according to an embodiment of the present invention. It is assumed that the home network and the visited network are roaming connections, and that voice, short message (SMS), and data roaming connections are established. The target terminal 200 is a mobile communication terminal subscribed to a mobile communication service provided by a home network (for example, a mobile communication service such as KTF in Korea), and is currently visited (for example, an NTT DoCoMo network in Japan, etc.). )

Hereinafter, a description will be given based on SUPL providing a location service through a user plane. SUPL is an efficient way of delivering location information needed to calculate the location of a mobile communication terminal.

The SUPL network for providing location-based services in the location information providing system largely includes a SUPL agent, a SLP (SUPL Location Platform), and a SET (SUPL Enabled Terminal). The SUPL agent represents a logical service access point using the actual measured location information. The SLP represents a SUPL service access point of a network portion that accesses network resources to obtain location information. SET is a device that can communicate with SUPL network using SUPL interface. For example, it may be a user terminal (UMTS) of a UMTS, a mobile station (MS) of a GSM, an MS of an IS-95, or a laptop or a PDA having a built-in SET function. Alternatively, the present invention may be various mobile communication terminals connected through a wireless local area network (WLAN). This SET interworkes with the network via a user plane bearer to support definition procedures in SUPL.

In addition, the SLP in the home network is referred to as H-SLP (Home SLP), and the SLP in the visited network is referred to as V-SLP (Visited SLP). In this case, when the SUPL procedure is started in the network, the SLP to which the external client first connects is called a requesting SLP (R-SLP), which may or may not be the same as the H-SLP as a logical entity. The target terminal is referred to as a target SET.

In the present invention, the SLP, which is a network component, includes an SPC (SUPL Positioning Center), which is an entity that calculates an actual position, and functions other than calculating position information, such as roaming and resource management. It includes a SLC (SUPL Location Center) that performs functions. H-SLP includes H-SPC and H-SLC, and V-SLP includes V-SPC and V-SLC. Therefore, internal communication must be performed between the H-SLC and the H-SPC in order to perform the function of the H-SLP, and internal communication must be performed between the V-SLC and the V-SPC in order to perform the function of the V-SLP. Should be performed.

The MSC 109 of the home network and the SGSN / GGSN 128 are roamed with the UMTS network 202 of the visiting network. The UMTS network 202 of the visited network is an asynchronous mobile communication network, and may be another asynchronous mobile communication network such as a WCDA network. The home positioning system 160 includes an H-SLP 162 or a roaming gateway 164 and is connected between the SGSN / GGSN 128 and the MPC 118 to calculate location information of the mobile communication terminal. .

The LBSP 120 is connected to the authentication gateway 150 (eg, KTF's Juice Gateway), so that the location requesting terminal and / or the target terminal when the location requesting terminal requests to provide location information according to the location-based service. It handles authentication as to whether or not you are subscribed to location-based services.

The visited network includes a visited positioning system 210 that includes a V-SLP 216, which is connected to the UMTS network 202 via a Visted GMLC 212.

Hereinafter, a method of obtaining location information of a location request terminal based on SUPL will be described with reference to FIG. 3.

In general, the roaming method uses the SUPL service provided through the direct connection with the home network, and there are cases where the SET starts the SUPL procedure and the SLP starts the SUPL procedure. Therefore, a method of providing location information and a SUPL roaming method according to the present invention when the SET starts the SUPL procedure, and a method of providing location information and a SUPL roaming method according to the present invention when the SLP starts the SUPL procedure will be described. .

3 is a flowchart of a method of providing location information of a location requesting terminal itself located in a visited network using GPS according to an embodiment of the present invention, and FIG. 4 is a SUPL when a SET starts a SUPL procedure. Flowchart of roaming method. The location requesting terminal and the target terminal 200 are the same, and in the case of outbound roaming where the location requesting terminal is located in the visited network, the location information providing method is provided.

The location requesting terminal located in the visited network requests the location information of itself (the target terminal 200 in FIGS. 3 to 4) from the service server 122 of the home network (step S300). The service server 122 requests the location of the target terminal 200 to the LBSP 120 (step S302), and the LBSP 120 requests the location of the target terminal 200 to the MPC 118 (step S304). .

The MPC 118 requests the network information in which the target terminal 200 is located to the DGMLC 116 (step S306), and the DGMLC 116 checks whether it is a 2G or 3G network, whether it is a home network or a visited network. Respond to MPC 118 (step S308). When the target terminal 200 does not include the current location network information in the HTTP header transmitted, the description has been made based on a method of finding a network to which the target terminal 200 belongs, but the current header is transmitted in the HTTP header transmitted by the target terminal 200. When the location network information is included, a method of obtaining current location network information where the target terminal 200 is located through an HTTP header is also possible.

The location requesting terminal carries an HTTP header containing parameters for the wireless environment of the location requesting terminal. The HTTP header is basically asynchronous network information indicating WCDMA network recorded in the USIM card of the location requesting terminal, mobile country code (MCC), network information (Mobile Network Code (MNC)) where the location requesting terminal is registered, and the base station. It includes parameters such as information (cell ID), and additionally includes current location network information which is information of a network where the location requesting terminal is currently located. The area information and network information recorded in the USIM card are information related to the home network in which the location requesting terminal is registered as a subscriber. In addition to the HTTP header, it will be apparent to those skilled in the art that the same content is applicable to the use of WIPI and BREW billcom3 headers.

Therefore, the LBSP 120 checks the HTTP header and compares the location information and network information recorded in the USIM card with the current location network information, and if it is the same, determines that the location requesting terminal is currently located in the home network. It is possible to determine that the terminal is located in the visited network, not the home network.

Thereafter, the MPC 118 requests location information by providing identification information (msid) of the target terminal 200 to the H-SLP 162 (step S310). The H-SLP 162 transmits response information indicating that the session setup is ready with the target terminal 200 to the MPC 118 (step S312), and the response information includes the H-SLP 162 for session establishment. PS information such as URL, IP address or port is included.

The MPC 118 transmits the connection information to the LBSP 120 (step S314), and the LBSP 120 transmits the connection information to the service server 122 (step S316).

The service server 122 transmits the access information to the target terminal 200 (step S318), and starts the SUPL procedure as the target terminal 200 receives the PS information (step S320).

The target terminal 200 transmits a SUPL START message to the H-SLP 162 based on information such as a URL, an IP address, a port, and the like included in the access information. The SUPL START message includes a sessionid of a location measurement session (SUPL session), a location identifier (lid) (eg, base station ID), and SET capabilities (performance related to positioning methods supported by a target terminal). parameter) to indicate a capability).

The H-SLP 162 requests the cell location from the roaming gateway 164 based on the SUPL START message (step S322). The cell location request message includes identification information (msid) and location identifier (lid) of the target terminal, that is, the target terminal 200. The request for the cell position is because the initial position is required to position the position using GPS, and the position information of the cell where the target terminal is located is required as the initial position.

The roaming gateway 164 transmits the RLP SRLIR message to the visited positioning system, that is, the V-SLP 216 through RLP communication (step S324), and the RLP SRLIR message includes the identification information (msid) of the target terminal 200 and the location. It includes an identifier (lid).

The V-SLP 216 transmits to the roaming gateway 164 an RLP SRLIA message including location information (location information such as latitude and longitude of the base station) of the cell where the target terminal 200 that is posresult is located (step S326). ). The RLP SRLIA message is a response to the RLP SRLIR message.

The roaming gateway 164 forwards the location result of the cell included in the RLP SRLIA message to the H-SLP 162 (step S328), where the H-SLP 162 is a roamed base station Almanac (BSA). The information is updated (step S330). The H-SLP 162 establishes a direct TCP connection with the target terminal based on the base station almanac information and performs location positioning according to the SUPL procedure (step S332).

Steps S320 to S332 are shown in detail in FIG. 4 and will be described in detail with reference to FIG. 4.

Before transmitting the SUPL START message for starting the SUPL procedure, the target terminal 200 checks whether a data connection with the packet data network is established, and if not, sets the packet data network such as 3GPP or 3GPP2. Setup the data connection with (step S400).

Thereafter, the target terminal 200 transmits a SUPL START message to the H-SLP 162 to start the SUPL procedure (step S402). The SUPL START message includes the session ID of the SUPL session for starting the SUPL procedure, the location identifier (lid), and the SET capabilities of the target terminal 200. At this time, the target terminal 200 and the H-SLP 162 establishes a TCP connection corresponding to the SUPL session ID.

The H-SLP 162 manages routing information for each SET, and checks whether the target terminal 200 belongs to the roaming service area by using the routing information (step S404). As a result of the check, if the target terminal 200 belongs to the roaming service area, the H-SLP 162 transmits an RLP SRLIR message to the V-SLP 216 of the visited network (step S406). The RLP SRLIR message includes at least the identification information (msid) and the location identifier (lid) of the target terminal.

The V-SLP 216 acquires the location information (or location information of the base station) corresponding to the location identifier (lid) through internal communication between the internal V-SLC and the V-SPC, and responds to the RLP SRLIR message. The RLP SRLIA message is transmitted to the H-SLP 162 (step S408).

The H-SLP 162 transmits a SUPL RESPONSE message to the target terminal 200 based on the location information of the cell (or location information of the base station) (step S410). The SUPL RESPONSE message contains the session ID and the positioning method (posmethod) to be used.

The target terminal 200 transmits a SUPL POS INIT message to the TCP-connected H-SLP 162 (step S412). The SUPL START message includes a session ID of the SUPL session, a location identifier (lid), and SET capabilities of the target terminal 200.

The H-SLP 162 exchanges successive messages with the target terminal 200 to perform the SUPL POS procedure. The H-SLP 162 or the target terminal 200 locates the target terminal 200 based on the position information of the cell (location information of the base station) obtained in step S608 through a continuous message for positioning. Is calculated (step S414).

When the position of the target terminal 200 is calculated, the H-SLP 162 transmits a SUPL END message to the target terminal 200 to notify the end of the SUPL procedure (step S416). The SUPL END message includes a session ID for releasing a TCP connection established between the target terminal 200 and the H-SLP 162. Thus, the TCP connection between the H-SLP 162 and the target terminal 200 is released.

Through the above process, the H-SLP 162 and the target terminal 200 located in the visited network may perform a positioning procedure through SUPL roaming through a direct connection.

5 is a flowchart of a method for providing location information of a target terminal located in a visited network using GPS according to another exemplary embodiment of the present invention, and FIG. 6 is a diagram of a SUPL roaming method when an SLP starts a SUPL procedure. It is a flow chart.

The location request terminal and the like request the location information of the target terminal 200, and the location request is transmitted to the LBSP 120.

The LBSP 120 requests the location information of the target terminal 200 to the MPC 118 (step S500), and the MPC 118 network information (2G or 3G) where the target terminal 200 is located in the DGMLC 116. Network, home network or visited network) (step S502) and a response thereto (step S504).

When the target terminal 200 is located in the visited network, the MPC 118 requests the location information by providing identification information (msid) of the target terminal 200 to the H-SLP 162 (step S506). The H-SLP 162 requests a short message (SMS) to be sent to the target terminal 200 to the MP 112 to establish a session with the target terminal 200 (step S508), and the MP 112 sends a short message. Is transmitted to the target terminal 200 (step S510). The short message includes a SLP mode which is a session ID, a positioning method, and information about the H-SLP 162 (URL, IP address, port, etc.) for SUPL procedure initialization.

The MP 112 receives a response to the transmission result from the target terminal 200 and transmits the response to the H-SLP 162 (step S512). The H-SLP 162 transmits response information indicating that the session setup with the target terminal 200 is ready to the MPC 118 (step S514), and the MPC 118 sends the response information to the LBSP 120. Transmit (step S516). The response information includes PS information (access information) such as the URL, IP address, or port of the H-SLP 162 for session establishment.

The target terminal 200 transmits a SUPL POS INIT message to the H-SLP 162 based on the information included in the received short message (step S518). The SUPL POS INIT message may include a session-id of a location measurement session (SUPL session), a location identifier (lid) (for example, a base station ID), and SET capabilities (performance related to positioning methods supported by a target terminal). parameter) to indicate a capability).

Thereafter, the H-SLP 162 requests the cell location of only the visit where the target terminal 200 is located and receives the result (steps S520 to S528), which are the same as those of steps S322 to S330 shown in FIG. 3. Bar detailed description is omitted.

Thereafter, the H-SLP 162 starts SUPL positioning from the location result (location result of the base station) of the cell where the target terminal 200 acquired from the visited positioning system, that is, the V-SLP 216, is located (step S530). ).

Then, the SUPL location positioning result is transmitted to the MPC 118 (step S534). If there is a location re-request at the LBSP 120 (step S532), the SUPL location positioning result is transmitted to the LBSP 120 (step S536).

Referring to FIG. 6, the H-SLP 162 illustrates a SUPL roaming method when starting the SUPL procedure.

When the location request terminal or the like requests the location information of the target terminal 200 to the SUPL agent 800, the SUPL agent 800 sends a Mobile Location Protocol (MLP) Standard Location Immediate Request (SLIR) message to the R-SLP 810. Request the location information of the target terminal 200 (step S600). The MLP SLIR message includes the identification information (msid) of the target terminal 200, the ID (client-id) of the SUPL agent 800.

The R-SLP 810 manages routing information and goes through a SUPL agent authentication procedure using the received SUPL agent ID (step S602). The R-SLP 810 may identify identification information (msid) of the target terminal 200. ), Search for the H-SLP 162 to which the target terminal 200 belongs, and then transfer the MLP SLIR message to the searched H-SLP 162 using the RLP SRLIR message (step S604).

The H-SLP 162 manages routing information for each SET, and checks whether the target terminal 200 belongs to the roaming service area by using the routing information (step S606). As a result of the check, if the target terminal 200 belongs to the roaming service area, the H-SLP 162 transmits a SUPL INIT message to the target terminal 200 to start a SUPL procedure with the target terminal 200 (step S608). The SUPL INIT message includes the session ID (session-id) of the location measurement session (SUPL session), the positioning method (posmethod), and information (URL, IP address, port, etc.) about the H-SLP 162 (SLP mode). do.

The target terminal 200 checks whether the data connection with the packet data network is established, and if not, sets up the data connection with the packet data network such as 3GPP or 3GPP2 (step S610). .

The target terminal 200 transmits a SUPL POS INIT message to the H-SLP 162 (step S612). The SUPL POS INIT message may include a session-id of a location measurement session (SUPL session), a location identifier (lid) (for example, a base station ID), and SET capabilities (performance related to positioning methods supported by a target terminal). parameter) to indicate a capability).

The H-SLP 162 transmits an RLP SRLIR message including the identification information (msid) and the location identifier (lid) of the target terminal 200 to the V-SLP 216 of the visited network where the target terminal 200 is located. (Step S614). The H-SLP 162 receives the RLP SRLIA message from the V-SLP 216 in response to the RLP SRLIR message (step S616). The V-SLP 216 transmits the cell location information (latitude, longitude, etc.) of the visited network where the target terminal 200 is located in the RLP SRLIA message.

The H-SLP 162 exchanges successive messages with the target terminal 200 to perform the SUPL POS procedure. The H-SLP 162 or the target terminal 200 calculates the position of the target terminal 200 through a continuous message for positioning (step S618).

When the position of the target terminal 200 is calculated, the H-SLP 162 transmits a SUPL END message to the target terminal 200 to notify the end of the SUPL procedure (step S620). The SUPL END message includes a session ID for releasing a TCP connection established between the target terminal 200 and the H-SLP 162. Thus, the TCP connection between the H-SLP 162 and the target terminal 200 is released.

Through the above process, the H-SLP 162 and the target terminal 200 located in the visited network may perform a positioning procedure through SUPL roaming through a direct connection.

The H-SLP 162 sends an RLP SRLIA message to the R-SLP 810 (step S622). The RLP SRLIA message includes the location result of the target terminal 200.

The R-SLP 810 transmits an MLP SLIA message to the SUPL agent 800 and transmits a location result of the target terminal 200.

After measuring the location of the target terminal 200 by the SUPL procedure as shown in FIG. 3 or FIG. 5, the LBSP 120 receives the location result from the MPC 118. And when there is a location re-request from the location request terminal, the service server 122 makes a location re-request to the LBSP 120, the LBSP 120 makes an authentication request to the authentication gateway 150 and Receive a response. In case of successful authentication, the LBSP 120 transmits the SUPL location positioning result to the service server 122. Here, the LBSP 120 may request and receive a geocoding or map corresponding to the SUPL location positioning result from the GISP, and may additionally transmit the same to the service server 122. The service server 122 may provide the location request terminal with a result page using the SUPL location positioning result and / or map coding and map information received from the LBSP 120.

According to another preferred embodiment of the present invention, when the user with a mobile communication terminal is driving in the visited network, the interworking between the above-described positioning system in the process of providing a route service that can be provided with the optimal route to the current location and destination It is possible to apply your location search method through.

Further, according to another preferred embodiment of the present invention, through the interworking between the positioning system described above in the process of handling the emergency request to rescue the subscriber by tracking the location of the subscriber in an emergency situation in the visited network It is also possible to apply your own location search or location search for others.

As described above, the method and system for providing location information through the interworking between the positioning systems according to the present invention are provided to a subscriber or a subscriber of a home network located in the visited network through the interlocking of the positioning system between the roaming connected home network and the visited network. Location-based services can be provided.

In addition, in the case where the subscriber of the WCDMA network is located in a visited network other than the home network, the location information may be provided by directly connecting the mobile communication terminal and the positioning system of the home network.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (16)

A method for providing location information in the H-SLP of a Secure User Plane Location (SUPL) based location information system including a V-SLP (Visited SUPL Location Platform), an H-SLP (Home SLP), and a target terminal, (a) receiving a SUPL START message from the target terminal; (b) identifying the visited network to which the target terminal belongs by searching the routing information of the target terminal; (c) requesting location information of a base station serving an area where the target terminal is located in the visited network by transmitting a Roaming Location Protocol (RLP) Standard Roaming Location Immediate Request (RLIR) message to the V-SLP of the visited network; Doing; (d) receiving an RLP SRLIA message in response to the RLP SRLIR message from the V-SLP to obtain location information of the base station; (e) transmitting a SUPL RESPONSE message to the target terminal in response to the SUPL START message; (f) receiving a SUPL INIT message from the target terminal; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting a SUPL END message to the target terminal to inform the end of the SUPL procedure; Location information providing method through the interworking between the positioning system comprising a. The method of claim 1, The H-SLP and the target terminal location information providing method through the interworking between the positioning system, characterized in that the TCP connection is established. A method of providing location information in a home network roaming with a visited network and including a home positioning system, the home network comprising: (a) receiving a request for providing location information of a target terminal from a location requesting terminal; (b) determining whether the target terminal is located in the visited network; (c) transmitting the access information of the home positioning system to the target terminal when the target terminal is located in the visited network as a result of the determination; (d) establishing a TCP connection for performing a SUPL procedure between the home positioning system and the target terminal according to the access information; (e) requesting location information of a base station where the target terminal is located from the visited positioning system of the visited network by a SUPL procedure start request from the target terminal; (f) receiving location information of the base station corresponding to the request from the visited positioning system; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting the location information of the target terminal to the location requesting terminal; Location information providing method through the interworking between the positioning system comprising a. The method of claim 3, The location request terminal and the target terminal is location information providing method through the interworking between the positioning system, characterized in that the same. The method of claim 4, wherein The step (b) is a method for providing location information through interworking between positioning systems comprising the step of obtaining network information of the target terminal from a dual gateway mobile location center (DGMLC). The method of claim 4, wherein The location information providing request of step (a) includes current location network information of an HTTP header, The step (b) is a method for providing location information through interworking between positioning systems, characterized in that it is determined whether the target terminal is in the visited network based on the current location network information. The method of claim 4, wherein The home network includes a Geographic Information Service Platform (GISP), The step (h) may include requesting map information corresponding to the location information of the target terminal from the map information service platform; And And generating a page including the location information of the target terminal and the map information and transmitting the generated page to the location requesting terminal. In the method for providing location information in the H-SLP of the SUPL-based location information system including a SUPL agent, a requesting SLP (R-SLP), V-SLP, H-SLP and a target terminal, (a) the SUPL agent transmitting a Mobile Location Protocol (MLP) Standard Location Immediate Request (SLIR) message requesting location information of the target terminal to the R-SLP; (b) the R-SLP transmitting the MLP SLIR message to the H-SLP to which the target terminal belongs; (c) checking, by the H-SLP, whether the target terminal supports the SUPL function and is located in a roaming service area; (d) if the target terminal supports a SUPL function and is in a roaming service area, the H-SLP sends a SUPL INIT message to the target terminal to start a SUPL procedure with the target terminal and establish a TCP connection; (e) the H-SLP receiving base station information from the target terminal; (f) the H-SLP requesting the V-SLP for location information of the base station corresponding to the base station information; (g) the H-SLP receiving location information of the base station in response to the request; (h) the H-SLP performing a SUPL procedure with the target terminal to calculate location information of the target terminal based on the location information of the base station; (i) the H-SLP transmitting a SUPL END message to the target terminal to notify the end of the SUPL procedure; (j) the H-SLP transmitting location information of the target terminal to the R-SLP; And (k) the R-SLP transmitting location information of the target terminal to the SUPL agent Location information providing method through the interworking between the positioning system comprising a. A method for providing location information in a home network roaming with a visited network and including a home positioning system, (a) receiving a request for providing location information of a target terminal from a location requesting terminal; (b) determining whether the target terminal is located in the visited network; (c) transmitting a short message for starting a SUPL procedure to the target terminal when the target terminal is located in the visited network as a result of the determination; (d) establishing a TCP connection between the home positioning system and the target terminal to perform a SUPL procedure corresponding to the short message; (e) requesting location information of a base station where the target terminal is located from the visited positioning system of the visited network; (f) receiving location information of the base station corresponding to the request from the visited positioning system; (g) calculating a location information of the target terminal based on the location information of the base station by performing a SUPL procedure with the target terminal; And (h) transmitting the location information of the target terminal to the location requesting terminal; Location information providing method through the interworking between the positioning system comprising a. The method of claim 9, And the target terminal is a terminal other than the location request terminal. The method of claim 10, The step (b) is a method for providing location information through interworking between positioning systems comprising the step of obtaining network information of the target terminal from a dual gateway mobile location center (DGMLC). The method of claim 10, The location information providing request of step (a) includes the current location network information of the HTTP header, The step (b) is a method for providing location information through interworking between positioning systems, characterized in that it is determined whether the target terminal is in the visited network based on the current location network information. The method of claim 10, The home network includes a Geographic Information Service Platform (GISP), The step (h) may include requesting map information corresponding to the location information of the target terminal from the map information service platform; And And generating a page including the location information of the target terminal and the map information and transmitting the generated page to the location requesting terminal. In the SUPL-based location information providing system for providing a SUPL service through a direct connection between the home positioning system of the home network and the target terminal, An H-SLP for establishing a TCP connection with the target terminal and requesting the location information of the base station to which the target terminal belongs in a visited network for calculating the location information of the target terminal when the location information of the target terminal is requested; A V-SLP that calculates location information of a base station to which the target terminal belongs and transmits the location information to the H-SLP; And A target terminal for establishing a TCP connection with the H-SLP and calculating a current position by a SUPL positioning process based on the position information of the base station Position information providing system through the interworking between the positioning system comprising a. The method of claim 14, SUPL procedure is initiated by the H-SLP, location information providing system through interworking between positioning systems. The method of claim 14, SUPL procedure is initiated by the target terminal location information providing system through interworking between the positioning system.

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