KR100775538B1 - Method and system for providing location based service for roaming subscriber - Google Patents

Abstract

The present invention relates to a method and system for providing a location based service of a roaming subscriber. The present invention provides a method for providing location-based services to a roaming subscriber who has moved from a home network to a visited network, the method comprising: (a) receiving a request for providing location information for the roaming subscriber; and (b) the roaming terminal belongs to a 3G network. (C) establishing a session with the roaming terminal if the roaming terminal belongs to a 3G network, and (d) calculating a location of the roaming terminal based on GPS through the session setting; It may include. According to the present invention, there is an advantage of providing accurate and convenient location-based services to roaming subscribers.

Roaming, Location, Route, GPS, Mesh, Map, Visiting Network, Home Network

Description

METHOD AND SYSTEM FOR PROVIDING LOCATION BASED SERVICE FOR ROAMING SUBSCRIBER}

1 is a view showing the configuration of a roaming system according to an embodiment of the present invention.

2 is a diagram illustrating a configuration of a system for providing location information according to the present invention.

3 shows a detailed configuration of a positioning system according to the present invention.

4 is a flowchart of a process of providing location information of a roaming subscriber according to the present invention;

5 is a flowchart illustrating a process of identifying a location of a roaming subscriber in a route service according to an exemplary embodiment of the present invention.

6 is a flow chart of a destination and route search process according to a preferred embodiment of the present invention.

7 is a flowchart illustrating a process of providing a route guidance service to a roaming subscriber according to an embodiment of the present invention.

8 is a view showing the configuration of a WARN according to an embodiment of the present invention.

9 is a diagram illustrating a configuration of a location-based service system according to the prior art.

10 is a view showing the configuration of a WARN according to the prior art.

The present invention relates to a method and a system for providing a location based service of a roaming subscriber, and more particularly, to a method and a system capable of providing an accurate and convenient location based service to a roaming subscriber.

Recently, with the rapid increase in the demand for mobile communication, there is an increasing demand for global roaming, which allows a single number to be called anywhere in the world. Global roaming is a function that allows a client to receive mobile communication services while moving around the world, and is a technology that must be applied in the field of next generation mobile communication.

Various service methods have been proposed in connection with roaming services between international mobile phone networks.

Representatively, Korean Patent Publication No. 2001-2308 (Roaming device and method between heterogeneous manganese in mobile communication system), Korean Patent Publication No. 0182235 (Roaming service method between international mobile phone network or heterogeneous mobile phone network), Korea Patent Publication No. 2003-1042 (Global Roaming System and Service Method in Mobile Communication Network), Republic of Korea Patent Publication No. 0319196 (International Automatic Roaming Service Method), Republic of Korea Patent Application Publication No. 2000-45588 (Others in Mobile Communication Network) Subscriber roaming and call processing method), Korean Patent Laid-Open Publication No. 2002-40122 (roaming service providing method for international roaming subscriber in next generation mobile communication network).

Recently, a location based service (LBS), which provides unique information based on a user's mobility, has been highlighted. LBS refers to a service and system for accurately identifying a location of a person or a thing and providing additional information related to the location based on a mobile terminal such as a cellular phone, a PCS, a PDA, a notebook computer, and the like.

The main services of LBS include the traffic information service that searches the user's location and searches the traffic information around it, the vehicle emergency service that automatically searches the location of the broken car and sends the tow truck, Emergency services that service the location of the nearest emergency room to treat injuries, location-based payment services that vary in cost depending on the location of the mobile communications equipment, gas station nearest to the user's location There is a push service for notifying users of special services such as service information for living places such as rest stops and restaurants, sale advertisements, etc., and many other services such as leisure information and theft tracking.

Location tracking technology for providing LBS services include cell-based technology using base station reception signals and handset-based technology (or GPS-based technology) using a GPS receiver. Recently, a hybrid technology that combines two technologies to improve positional accuracy has also been developed.

In relation to such a location-based service, Korean Patent Laid-Open Publication No. 2005-23088 proposes a method for positioning and transmitting location information of a mobile communication terminal, and Korean Patent Publication No. 0459761 proposes a mobile location-based service system. .

However, there has never been proposed a method or system for providing a location-based service for a roaming subscriber station moving from a home network to a visited network.

Recently, location-based services have been provided to mobile subscribers based on GPS.

As shown in FIG. 9, a general mobile communication network may be classified into a CDMA network and a WCDMA network. A mobile communication terminal 900 belonging to a CDMA network may include a CDMA network including a base transceiver station (BTS) 902. The mobile communication terminal 910 connected to the WCDMA network is connected to the WCDMA network through the Node B 912.

A conventional location information providing process will be described with reference to FIG. 9.

The Position Determination Entity (PDE) 904 performs a positioning function of a GPS terminal, that is, a mobile communication terminal 900 supported by the GPS function through interworking with a Global Positioning Management System (GPMS) 908, and the N-MPC (N). The Mobile Positioning Center (906) performs a CDMA network (cell) based location positioning function with reference to the information on the subscriber recorded in the Home Location Register (HLR) 914.

Meanwhile, in the WCDMA network, the Gateway Mobile Location Center (GMLC) 916 also performs the positioning function of the mobile communication terminal 910 belonging to the WCDMA network on a cell basis with reference to the HLR 914.

The location information performed through the above process is transmitted to a location based service platform (LBSP) 926 included in a network providing location information through the S-MPC 920, and the location based service platform. 126 provides a content provider (928) to provide a location of a mobile communication terminal (100, 110) belonging to a CDMA network or a WCDMA network, and at this time, a Geographic Information Service Platform (GISP) 924 is provided. Via the map information may be provided to the content provider 928 together.

As shown in FIG. 9, in the case of requesting a location-based service in a conventional LBS system, the location information providing process is divided into a cell-based (network-based) and a GPS method according to a location positioning method, and a CDMA network and a WCDMA system. It is divided into networks, and the system is distributed and operated by network and positioning method.

However, when the system is distributed and operated by network and location method as described above, not only the system configuration for providing the location-based service is complicated, but also there is a problem in that it is not possible to calculate the exact location result of the subscriber who requested the location-based service.

On the other hand, Figure 10 is a view showing the configuration of the WARN according to the prior art, as shown in Figure 10, the wireless area reference network (WARN) is a GPS antenna 1002, NTP (Network) to communicate with the satellite 1000 Time Protocol, 1004), GPS receiver 1006 and CDMA PDE 1010 including a WARN gateway 1008 to perform time synchronization between NTP (1004) and CDMA PDE (1010), wherein, WARN gateway ( 1008 performs a function of broadcasting a satellite signal provided from the GPS receiver 1006 to the PDE 1010.

However, since the WARN as shown in FIG. 10 is applied only to the CDMA network, the WCDAM network cannot provide the location-based service based on the GPS. Thus, the CDMA network (2G network) of the WCDMA network (3G network) subscriber is not provided. When roaming, service processing procedures become complicated, and when subscribers belonging to the 3G network request location-based services, quality deterioration is caused, and the system is built.In addition, the operation / maintenance cost is increased and the functioning cost of unit positioning technology is improved. There was an increasing problem.

In addition, in the past, a route service based on a precisely calculated location was not provided to roaming subscribers belonging to a WCDMA network, and a route service that could be conveniently used by subscribers because it could not provide map information in an appropriate language to a roaming subscriber abroad There was a problem that does not provide.

In the present invention, in order to solve the problems of the prior art as described above, cell-based or GPS-based location information (or coordinate-based location information) is collected from a subscriber station receiving a roaming service from a home network. Based on the collected location information, we will propose various location based services.

It is another object of the present invention to provide a method and system that can provide GPS-based location-based services when a CDMA or WCDMA network subscriber is roaming.

Another object of the present invention is to provide the location information of the roaming subscriber of the WCDMA network by developing technical requirements such as the function, performance, and protocol specification of the system, and utilizing the GPS positioning function in the WCDMA network to obtain the location result according to the location-based service request. To provide a method and system that can efficiently calculate the.

In order to achieve the above object, according to a preferred embodiment of the present invention, a method for providing a location-based service to roaming subscribers from a home network to a visited network, (a) location information for the roaming subscriber Receiving a request for provision; (b) determining whether the roaming terminal belongs to a 3G network; (c) if the roaming terminal belongs to a 3G network, establishing a session with the roaming terminal; And (d) calculating the location of the roaming terminal on a GPS basis through the session establishment.

According to another aspect of the present invention, a visited network system for providing a location-based service to roaming subscribers moving from a home network to a visited network, comprising: means for receiving a request for providing location information for the roaming subscriber; Means for determining whether the roaming terminal belongs to a 3G network; And a means for establishing a session with the roaming terminal when the roaming terminal belongs to a 3G network, and calculating the location of the roaming terminal based on GPS through the session setting. A provision system is provided.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same number as much as possible even if displayed on different drawings. Hereinafter, a preferred embodiment of a method and system for providing a location based service of a roaming subscriber according to the present invention will be described in detail.

1 is a view showing the configuration of a roaming system according to an embodiment of the present invention.

It is assumed that the home network 100 and the visited network 120 shown in FIG. 1 are networks operated by different operators or separate networks operated in different countries.

The home network 100 of FIG. 1 includes a subscriber's mobile terminal 108 (MS 1), a mobile switching center 102 (MSC 1) to which the mobile terminal belongs, a home location register 104 in which the subscriber's location information and subscriber profile information are stored. Location information providing system 106 for collecting, storing, and managing cell-based location information or GPS-based (or coordinate-based) location information from HLR 1) and roaming subscriber station 128 (roaming terminal MS 2) It includes.

In addition, in FIG. 1, the visited network 120 is a different network from the home network 100, and is connected to the home network 100 through a roaming connection processing apparatus 110.

The visited network 120 is a mobile terminal (128, MS 2) of a subscriber (roaming subscriber) that the subscriber of the MS 1 (108) uses in the visited network for roaming service, to which the MS 2 (128) belongs. Mobile switching center 122 (MSC 2), home location register 124 (HLR 2), which stores location information and subscriber profile information of roaming subscribers.

In addition, in accordance with the present invention, the visited network 120 may include a positioning system 126 for positioning the location of MS 2 128.

Subscriber terminals MS 1 and MS 2 108 and 128 are coupled to the mobile switching centers MSC 1 and MSC 2 102 and 122 via a wireless communication network (including a base station and a base station controller) to make and receive voice calls. And a mobile communication terminal for performing wireless data communication.

In particular, the MS 1 and MS 2 (102 and 122) is preferably a terminal equipped with a GPS receiver for receiving location information from a GPS satellite, it is also possible to use a form equipped with an external GPS receiver. The GPS receiver includes a GPS antenna as a part for receiving the current position information of the mobile communication terminal as latitude and longitude coordinates from a plurality of GPS satellites. In addition, the MS 1 and MS 2 (108 and 128) is a dual-mode (or multi-mode) terminal for roaming between two networks with different air interface specifications, or subscribers containing the subscriber's MIN and ESN, etc. It may be a terminal to which an ID card can be applied.

The roaming connection processor 110 is a device for supporting roaming between a home network and a visited network using different communication methods. The roaming connection processor 110 registers a protocol conversion device or roaming service that supports conversion of protocols between two networks to be interworked. It may include a database for storing the location information and additional service information of the control unit and the like responsible for various control functions required for call processing, maintenance, and the like.

The roaming connection processing apparatus 110 of the present invention is not necessarily limited to the above-described configuration, and of course, various types of design modifications are possible to support smooth roaming between the home network and the visited network. In addition, the roaming connection processing unit 110 may be located in a home network, a visited network or an international exchange network.

Mobile switching centers MSC 1 and MSC 2 108 and 128 are equipped with a plurality of electronic exchanges to handle basic and supplementary services, to handle incoming and outgoing calls of subscribers, to handle location registration procedures and handoff procedures, and to network other networks. Roaming service through interworking with The mobile switching centers 108 and 128 according to the present invention support both IS-95 A / B / C, EV-DO, IS-2000 systems and fourth generation mobile communication networks in synchronous and asynchronous mobile communication networks.

The home location registers HLR 1 and HLR 2 104 and 124 store and manage subscriber information, additional service information for each subscriber, and cell-based location information of the subscriber station. In particular, the home location registers 104 and 124 store profile information of the calling and called terminals. This profile information includes the subscriber station's MIN (subscriber phone number), ESN (mobile phone serial number), subscribed telecommunication service information, and the like.

In particular, when a subscriber is roaming out of the home network, the home location register 104 of the home network stores subscriber information necessary for roaming along with the fact that the subscriber is roaming. In addition, the home location register 124 of the visited network stores cell-based (or network-based) location information of the roaming subscriber station MS 2 128 to be provided to the location information providing system of the home network according to a request from the home network. .

Referring to FIG. 2, the location information providing system 106 includes a location information collector 221, a location information manager 222, a location information provider 223, and a location information database 224. The location information providing system 106 is connected to the application server 250 and the web server 260 via a network to provide location-based services to the user.

As the location information collector 221 reaches the location information collection condition, the location information collector 221 requests the location information management device of the visited network to provide the location information of the roaming subscriber terminal, and the cell-based or coordinate-based data is transmitted from the location information management device. When the location information is received, the location information manager 222 transfers the location information.

The location information manager 222 constructs a location information table in a preset form, determines whether a specific roaming terminal has reached the location information collection condition, and based on the new location information transmitted from the location information collector 221. Update the location information table.

The location information provider 223 searches for the location information database 224 and extracts and provides location information corresponding to the roaming terminal when a request for location information about a specific roaming terminal is requested from the application server 250. .

The location information database 224 stores and manages the most recent location information for each roaming subscriber station. For example, the location information database 224 of the present invention stores a location information table of a predetermined form.

This location information table includes fields such as subscriber number, service type, update period, location information, location type and update time. Here, the subscriber number means MIN, and the service type indicates whether the collection condition of the location information is “on-demand” or periodic update, and the location type indicates whether the location information that can be collected for the corresponding subscriber station is cell based or GPS based. Indicates cognition. For example, if a subscriber station registered in a visited network and receiving roaming service includes a GPS receiver, the location type is GPS-based, and if the subscriber terminal does not include a GPS receiver, the location type is cell-based. do.

The application server 250 requests the location information of the corresponding subscriber terminal to the location information providing system 106 based on the location-based service request of the user transmitted from the web server 260, and from the location information provider 223. Generates content for location-based services based on the delivered location information.

The web server 260 receives a location-based service request from the user, converts the location-based resource from the application server 250 into a web document, and provides the same to the user.

Hereinafter, a method of providing location-based service for a roaming subscriber station according to the present invention will be described in detail based on the above-described configuration of a mobile communication system and a location information providing system.

First, the subscriber will be described the process of performing the location registration in the home network 100 using his terminal MS 1 (108) as follows.

In the home network 200, MS 1 108 is a subscriber station with HLR 1 104 as a home, and assumes that MS 1 108 attempts to register a location in the MSC 1 102 service area. As shown, the location registration message generated at MS 1 108 is forwarded to MSC 1 102 through the base station. The MSC 1 102 analyzes the subscriber number (MIN) of the MS 1 108 requesting the location registration to determine the home location register where the location information should be stored.

In HLR 1 104, which is the home of a subscriber station attempting to register a location in accordance with internal data of MSC 1 102, subscriber location data is updated and a location registration response message is transmitted to MSC 1 102. At this time, the data of the subscriber is generated in the visitor location register (VLR) of the MSC 1, and future call processing and data processing are possible.

Next, a roaming service registration process of a subscriber who has moved from the home network 100 to the visited network 120 will be described.

The subscriber who wants to go to the visited network 120 to receive the roaming service requests the activation of the international roaming service by inputting the subscriber number to the roaming connection processing apparatus 110. Accordingly, the roaming connection processing apparatus 110 verifies the validity of the subscriber who requested the roaming service activation.

When the verification of the validity of the subscriber is completed, the call transfer service registration request is unconditionally transmitted to the subscriber to the HLR 1 104, the home location register of the roaming requesting subscriber. In this case, the call transfer number may be configured by inserting a country code into the terminal number of the MS 2 128, and the registration request message includes the location type information (cell-based, GPS-based) of the MS 2 128.

HLR 1 (104) of the home network receiving the call transfer service registration request unconditionally activates the call transfer service for the subscriber, the visited network 120 received from the roaming connection processing device 110 to the call transfer destination number; Called number of the terminal MS 2 (128) used in the. When registration of the call transfer service for international roaming is completed, the HLR 1 104 transmits a service activation response message to the roaming connection processing apparatus 110.

In addition, since the location registration procedure of the subscriber roaming in the visited network is substantially the same as the location registration procedure in the home network, detailed description thereof will be omitted.

The roaming service registration process described above is merely an example for explaining the feasibility of the present invention, and any roaming service process that has been developed in the past or will be developed in the future may be applied to the present invention as it is.

Hereinafter, a method of providing location based service to a roaming subscriber who has completed roaming service registration and location registration in a visited network will be described.

The location information manager 222 of the location information providing system 106 refers to the location information database 224 to confirm the service type of the roaming subscriber. That is, it checks whether the subscriber's location information collection condition is "on-demand" or "cycle update".

At this time, when the service type is registered as a period update, it is determined whether an update period for the location information of the subscriber is reached by referring to the "update period" field. On the other hand, if the service type is "on-demand", it is determined whether there is a request for providing location information from the application server 250.

In the above, when the location information collection condition for the subscriber is satisfied, the location information manager 222 transmits the subscriber number for the subscriber station MS 1 (108) to the location information collector 221.

Subsequent processing will be described in detail with reference to FIG. 5.

FIG. 5 is a flowchart illustrating a process of identifying a location of a roaming subscriber in a route service according to an embodiment of the present invention. Referring to FIG. 5, the location information collector 221 includes a subscriber station MS 1 108. The mobile switching center MSC 1 102 requests collection of location information (step 100).

The mobile switching center MSC 1 (102) receiving the location information collection request from the location information providing system (106) receives the location information of the subscriber with respect to the home location register HLR 1 (104) in which the subscriber station (MS 1) 108 is registered. Request (step 102).

The home location register HLR 1 (104) received the location information request from the MSC 1 (102) confirms that the subscriber has completed the transfer service registration for international roaming, and receives the location information by using the set transfer destination number. Send a response message to the MSC 1 102 (step 104).

The MSC 1 102, which has received the destination location response message, uses the forwarding number included in the message to roam the subscriber location to the MSC 2 122 of the MS 300 that is the visited network 300. The information collection request message is forwarded (step 106).

At this time, the roaming subscriber location information collection request message should include the location transfer information together with the call forwarding number.

In performing the procedures of steps 104 and 106, the home location register HLR 1 104 communicates only the fact that the subscriber is registered as a roaming subscriber to the MSC 1 102 and the network being visited for roaming. Information about the call forwarding number may be obtained from the roaming connection processing apparatus 110.

The MSC 2 122 of the visited network receiving the roaming subscriber location information collection request message checks the location type information (cell-based or GPS-based) included in the message, and the roaming subscriber station MS 2 128 is registered. Request cell-based location information or coordinate-based location information from the home location register HLR 2 124 or the positioning system 126 (steps 107 to 108).

That is, if the location type of the roaming subscriber station is GPS-based, coordinate-based location information is requested to the positioning system 126, and if cell-based, the cell-based location information is requested to the home location register 124. .

The home location register HLR 2 124 or the positioning system 126, which has received the location information request message from the MSC 2122, transmits cell-based location information or coordinate-based location information (longitude and latitude) to MSC 2 ( 122) (steps 109 to 110).

The location information calculation process of the positioning system 126 will be described in detail below.

The mobile switching center MSC 2 128, which has received the location information response message from the home location register 124 or the positioning device 126, sends the cell-based location information or the coordinate-based location information included in the message to the mobile switching center of the home network 100. Return to MSC 1 (102). In this case, it may be possible to via the roaming connection processing apparatus 110 (step 112).

The MSC 1 102 transmits the location information of the roaming subscriber received from the visited network 120 to the location information collector 221 of the location information providing system 106, and the location information manager 222 transmits the new location information. The corresponding " location information " field of the location information database 224 is newly updated (step 114).

As such, the location of roaming subscribers who have moved to the third visiting network based on the user's on-demand or renewal period can be identified in real time. It is possible to provide a base service.

That is, the application server 250 of FIG. 2 may receive real-time location information of a subscriber terminal roaming at any time from the location information providing system 106.

Meanwhile, each of the home network 100 and the visited network 120 according to the present invention may be classified into a mobile communication network including a CDMA network (2G network) and a WCDMA network (3G network), and the mobile network belongs to the visited network 120. The GPS-based route service is integratedly provided to the communication terminals 300 and 301.

According to the present invention, when a roaming subscriber requests a route service, the roaming subscriber's location system 126 locates the roaming subscriber, and at this time, provides information suitable for roaming subscriber in the home network 100 for the roaming subscriber. can do.

3 is a view showing a detailed configuration of a positioning system according to the present invention with reference to FIG. 3 will be described in detail with respect to the positioning system 126 according to the present invention.

As shown in FIG. 3, the positioning system 126 according to the present invention may be connected to a CDMA network (2G network) and a WCDMA network (3G network), and means for providing 2G GPS-based location information (Position Determination Entity, 310, hereinafter referred to as 'PDE', means for determining whether the subscriber is a 2G or 3G network (Dual Gateway Mobile Location Center, 316, hereinafter referred to as 'DGMLC'), means for providing 3G GPS based location information (Positioning Server, 330, hereinafter referred to as PS, means for transmitting GPS-based location information in a 2G or 3G network to an LBS platform (Location Based Service Platform, 320, hereinafter referred to as 'LBSP') (Mobile Positioning Center, 318) ) May be included.

When a roaming subscriber belonging to the visited network 120 requests a location, the PS 330 according to the present invention may include a Global Positioning Management System (GPMS), a satellite navigation management system (332), an LBS Location Based Service Operation & Management, Location-based service operation and management, 336) and one or more WARNs (340, 342) are connected to calculate the GPS-based location information of the roaming terminal in the 3G network and provide it to the MPC (318).

Here, the GPMS 332 is connected to the OSS Master Database (334), and the LBS O & M 336 is connected to the LBS O & M database server 338 so that the PS 330 needs information for calculating location information. To provide.

Here, WARN is to provide satellite information around the mobile communication terminal, but was conventionally provided only in the CDMA network, as shown in Figure 4, WARN according to the present invention WCDMA PDE 412 in addition to the CDMA PDE (406) It is possible to provide reference information for calculating GPS-based location information for roaming terminals belonging to the WCDMA network.

Meanwhile, according to a preferred embodiment of the present invention, the path between the roaming terminal 128 requesting the route and the LBSP 320 serving as a gateway between the MPC 318 and the PS 330 providing the location information are routed. When the location of the route service gateway 322 and the roaming terminal receiving the service request is confirmed, the route service provider 325 providing route information may be connected.

In the present specification, the route service gateway may be replaced with the term "request request" in that the route request receiver receives the route request and the LBSP receives the location information request from the route service gateway.

According to the present invention, the roaming terminal 128 requests a route service by a predetermined key signal, and a route service application for displaying a location of the roaming terminal on a map using map information provided by the method according to the present invention may be installed. have.

When the roaming subscriber requests the route service, the route service application contacts the route service gateway 322 and requests authentication of the route service. Accordingly, the route service gateway 322 sends the route request to the authentication gateway 324. Inquire whether the roaming subscriber has subscribed to the route service.

The authentication process of the authentication gateway may be performed through the mobile directory number (MDN) of the roaming terminal. If authentication is successful, the international mobile subscriber identity (IMSI) and model information of the roaming terminal are later transmitted to the MPC 318. Can be.

If the route service application is successful in authenticating the route service, the route service gateway 322 requests its own location information, and the route service gateway 322 requests the location information to the LBSP 320.

According to the present invention, since the DGMLC 316 has 2G and 3G base station information, the MPC 318 requests the roaming subscriber's network information to the DGMLC 316 when there is a request for location information from the LBSP 320. And network information from the DGMLC 316.

If the roaming subscriber is in the 3G network, the MPC 318 requests location information from the PS 330, and the PS 330 informs the MPC 318 that it is ready to establish a session with the roaming terminal.

When the session setup is ready, the PS 330 transmits PS information to the MPC 318, where the PS information means access information to the PS 330, and may include PS URL and port information. .

Thereafter, the PS information is transmitted to the route service gateway 322 through the MPC 318, and the route service application is interconnected with the PS 330 through such PS information.

Through the interconnection, the PS 330 may calculate the location of the roaming terminal on a GPS basis, and the calculated location result is transmitted to the MPC 318, which transmits it to the path service gateway 322.

According to the present invention, as described above, after the PS 330 confirms the user's location, that is, the location of the terminal requesting the route service, the route service application requests a page re-request, that is, a location result providing request, to the route service gateway 322. To send).

The route service gateway 322 may transmit the location result calculated by the PS 330 to the route service application, and thereafter, may receive a destination search request from the route service application.

In general, in order to provide a route service to a roaming terminal, map information written in a language that can be checked by a roaming subscriber must be provided, and a route service must be provided to a roaming subscriber by mapping the location of the roaming subscriber calculated on the corresponding map information. .

According to the present invention, a map information service platform (Geographic Information Service Platform, GISP, 107) included in the location information providing system 106 of the home network 100 is located in the region where the roaming subscriber belongs (the visited network belongs). You may be saving from.

If there is a destination search request, the route service gateway 322 according to the present invention may receive the list information corresponding to the destination to the GISP 107 via the roaming connection processing apparatus 110, and route the route list to the destination list. Will be sent to the application.

Thereafter, the roaming subscriber may select one of the corresponding destination lists, and the route service application requests the route service gateway 322 for a route to the destination selected by the subscriber.

According to the present invention, the route service gateway 322 may request the route service provider 325 for the route to the corresponding destination, receive the route result, and transmit the received route result to the route service application.

The route service application receiving the route result to the destination requests the route guidance service to the route service gateway, and the route service providing system according to the present invention uses the authentication, network information confirmation, and PS information of the roaming terminal as described above. The session setting process and the location information calculation process are performed, and the map information is transmitted at the request of the route service application, so that the route service application can perform the route guidance service through the map information corresponding to the location result of the roaming terminal.

As described above, according to the present invention, since the PS 330 included in the route service providing system establishes a session for the roaming terminal belonging to the 3G network and calculates location information based on GPS, It is possible to provide accurate route services.

In addition, according to the present invention there is an advantage that the route service through the map information written in the Korean language can be conveniently used to subscribers abroad.

5 is a flowchart illustrating a process of identifying a location of a route requester in a route service according to an exemplary embodiment of the present invention.

FIG. 5 is a diagram for describing a process of identifying a location of a subscriber who has requested a route in the course of providing a route service. Referring to FIG.

Referring to FIG. 5, the route service application installed in the roaming terminal transmits a route service authentication request to the route service gateway 322 according to a subscriber's request (step 500).

The route service gateway 322 requests the authentication gateway 324 whether the subscriber is a user subscribed to the route service and receives a response (step 502).

In this case, the authentication gateway 324 may be in the visited network 120, but alternatively, the authentication gateway 324 may be in the home network 100 and perform an authentication process upon request.

The route service gateway 322 sends the route service authentication response to the route service application (step 504), and if it is determined that the user is a normally subscribed user, the route service application sends the location service information, that is, route, to the route service gateway 322. Request the location of the requesting terminal (step 506).

Thereafter, the route service gateway 322 requests LCSM information (Location Service Manager information), that is, location calculation information to the LBSP 320 (step 508), and the LBSP 320 requests the location information to the MPC 318. (Step 510).

The MPC 318 according to the present invention requests network information of the corresponding path request terminal to the DGMLC 316 and receives a response thereto (step 512).

If the terminal belongs to the 3G network in step 512, request the location to the PS (330) (step 514), at this time, the Location Service Manager (LCSM) included in the PS 330 is PS information That is, the PS URL and the port information corresponding to the access information to the PS 330 are transmitted to the MPC 318 (step 516).

The PS information is sent from the MPC 318 to the route service gateway 322 (step 518), and the route service gateway 322 sends it to the route service application (step 520).

According to the transmission of the PS information, a session is established between the PS 330 and the path requesting terminal according to the present invention, and the PS 330 refers to the WARN system information shown in FIG. 4 to determine the latitude and longitude information of the path requesting terminal. The calculation is based on GPS (step 522).

On the other hand, the calculated position result is transmitted from the PS 330 to the MPC 318, and the MPC 318 transmits it to the path service gateway 322 (step 524).

Then, if the route service application requests a page re-request to route service gateway 322, i.e., to provide location results (step 526), route services gateway 322 re-requests the location results to LBSP 320, Receive the location result (step 528).

The route service gateway 322 generates a page about the received location result and transmits it to the route service application (step 530).

In the route service, the destination search and the route search process are performed after the user's location, that is, the location of the roaming terminal requesting the route service, is performed. FIG. 6 is a flowchart illustrating a destination and route search process according to an exemplary embodiment of the present invention. .

Referring to FIG. 6, the route service application receiving the page for the location result in FIG. 5 transmits a destination search request to the route service gateway 322 according to a request of a roaming subscriber (step 600).

At this time, the destination search request of the roaming subscriber may be delivered to the home network 100 via the route service gateway 322 and the roaming connection processing unit 110, and the GISP 107 provided in the home network 100 is stored in a database. Using the information, the list corresponding to the destination requested by the subscriber is returned to the route service gateway 322 (step 604).

The return may also be via the roaming connection processor 110.

The route service gateway 322 sends the received destination list to the route service application (step 606).

If the subscriber selects one of the destination lists, the route service application requests the route service gateway 322 for the route to the destination (step 608), and the route service gateway 322 sends the route to the route service provider. Request 325 (step 610).

In this case, when the route service provider 325 exists in the visited network 120, the destination information should be provided in the language applied in the visited network 120.

To this end, when the roaming subscriber selects one of the destination lists or directly inputs the destination, the roaming terminal 128 according to the present invention converts it into a language that can be handled in the visited network 120 to provide a route service provider ( 325).

The route service provider 325 calculates the optimal route, the shortest route, etc. to the corresponding destination by referring to the current location result of the subscriber and the selected destination information, and transmits the calculated route result to the route service gateway 322 (step). 612).

Here, in order to provide a route service, map information of a corresponding country should be stored in the roaming terminal 128. Such map information may be provided by the GISP 107 of the home network 100.

The route service gateway 322 transmits the calculated route result to the route service application to complete the preparation for route guidance (step 614).

7 is a flowchart illustrating a process of providing a route guidance service according to an exemplary embodiment of the present invention, and FIG. 7 illustrates a process in which a roaming terminal receives latitude and longitude information calculated by the PS 330 and outputs route information to a subscriber. It is shown.

Referring to FIG. 7, the route service application receiving the route result transmits a route guidance service request to the route service gateway 322 (step 700).

The route service gateway 322 requests the location information of the roaming terminal to the LBSP 320 (step 702), and the LBSP 320 requests the authentication gateway 324 to authenticate the route request terminal, and sends a response thereto. Receive (step 704).

If authentication is successful, the LBSP 320 requests the location to the MPC 318 (step 706), and the MPC 318 requests the network information for the route request terminal to the DGMLC 316, as described above. Respond to this (step 710).

If the path request terminal is in the 3G network, the MPC 318 requests PS information from the PS 330 (PS LCSM) (step 710) and receives a response thereto (step 712).

The PS information received by the MPC 318, that is, the URL and port information of the PS, is transmitted to the route service application through the LBSP 320 and the route service gateway 322 (steps 714 to 718).

When the PS information is received, the route service application requests a predetermined API (Application Protocol Interface) of the route request terminal (step 720), and thus the route request terminal uses the received PS information to the PS 330. A connection request is made (step 722).

Thereafter, the PS 330 internally processes information about the connection (step 726), informs the session connection to the route request terminal (step 728), initializes the position calculation (step 730), and provides auxiliary information for calculating the location information (step 732), receiving a response thereto (step 734) and internal processing (step 736).

Meanwhile, the route request terminal calculates its own location using the assistance information and transmits the first location information to the route service application (step 738).

When the first location information is calculated, the route service application requests map information corresponding to the first location information to the route service gateway 322 (step 740), and the route service gateway 322 maps from the GISP 107. Receive the information (step 742).

The received map information is transmitted to the route service application (step 744), and the route service application receives second and third location information of the terminal calculated according to the new map information from the route request terminal (steps 746 to 748). ).

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, according to the present invention, since the location information of the roaming terminal moved from the home network to the visited network can be grasped in real time, there is an advantage in that the same location-based service can be provided to subscribers traveling abroad. .

In addition, according to the present invention, when the roaming subscriber belongs to the visited network belonging to the WCDMA network, there is an advantage of accurately calculating the location.

In addition, according to the present invention there is an advantage that the subscriber can conveniently use the route service by providing the map information suitable for the subscriber to the roaming subscriber.

Claims (18)

A method for providing location-based services to roaming subscribers moving from a home network to a visited network, (a) receiving a request for providing location information for the roaming subscriber; (b) determining whether the roaming terminal belongs to a 3G network; (c) if the roaming terminal belongs to a 3G network, establishing a session with the roaming terminal; And (d) calculating a location of the roaming terminal based on GPS through the session establishment. The method of claim 1, The visited network includes a positioning server, The step (c) of the roaming terminal comprises the step of accessing the positioning server using the access information to the positioning server, characterized in that the roaming subscriber location-based service providing method. The method of claim 2, And wherein the access information includes URL and port information of the positioning server. The method of claim 1 The visited network includes a route service gateway, Receiving a route service request from the roaming terminal; Requesting map information matching the visited network to the home network; And And transmitting the map information received from the home network to the roaming terminal. The method of claim 4 And the map information is provided by a map information service platform included in the home network. The method of claim 4 Receiving a destination search request from the roaming terminal; Transmitting the destination search request to the home network; And Receiving a list of destinations received from the home network and transmitting the received destination list to the roaming terminal. The method of claim 6, The visit network further includes a route service provider, And when the selection information about one of the destination lists is received, providing a route result corresponding to the selected destination. The method of claim 1, The steps (b) to (d) are performed when the location information collection condition for the roaming terminal is satisfied in the home network. The method of claim 8, And the location information collection condition is a location information update period for the roaming terminal. A visitor network system that provides location-based services to roaming subscribers who move from a home network to a visitor network. Means for receiving a request for providing location information for the roaming subscriber; Means for determining whether the roaming terminal belongs to a 3G network; And If the roaming terminal belongs to a 3G network, and establish a session with the roaming terminal, the location-based service of the roaming subscriber characterized in that it comprises means for calculating the location of the roaming terminal on a GPS basis through the session setting system. The method of claim 10, The session establishment and location calculation means is a positioning server, And the positioning server establishes a session by transmitting the access information to the positioning server to the roaming terminal. The method of claim 11, And wherein the access information includes URL and port information of the positioning server. The method of claim 10 The visited network includes a route service gateway, When the route service gateway receives a route service request from the roaming terminal, the route service gateway requests map information matching the visited network to the home network, and transmits the map information received from the home network to the roaming terminal. Roaming subscriber location-based service providing system. The method of claim 13, And the map information is provided by a map information service platform included in the home network. The method of claim 13, When the route service gateway receives a destination search request from the roaming terminal, the route service gateway transmits the destination search request to the home network, receives a destination list received from the home network, and transmits the destination search request to the roaming terminal. Location-based service delivery system. The method of claim 15, The visit network further includes a route service provider, The route service provider provides a route result corresponding to the selected destination when the selection information on one of the destination lists is received. The method of claim 10, The session establishment and location calculation is performed when the location information collection condition for the roaming terminal is satisfied in the home network. The method of claim 17, And the location information collection condition is a location information update period for the roaming terminal.

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