KR20040028068A - Method of integration location information service method for connection of mobile network and wireless LAN - Google Patents

Abstract

PURPOSE: An integrated location information service method is provided to achieve improved accuracy of information service by integrating the location information server of mobile communication network and location information server of wireless LAN. CONSTITUTION: An integrated location information service method comprises a first step of permitting an integrated location server to search a subscriber location database and check whether the corresponding mobile terminal is connected to a wireless LAN through the IP address in use; a second step of obtaining a wireless LAN based location of the mobile terminal by searching the location database of the access point where the mobile terminal connected to the wireless LAN belongs; and a third step of obtaining a cell based location position of the mobile terminal by being linked with the home location register governing the mobile terminal which is not connected to the wireless LAN.

Description

Method of integration location information service method for connection of mobile network and wireless LAN}

The present invention relates to an integrated location information service method through interworking of a mobile communication network and a wireless LAN, and to a computer-readable recording medium recording a program for realizing the method. Particularly, the present invention relates to a base station location information and a wireless LAN (W) of a mobile communication network. -LAN: Integrated location information of users of wireless terminals (PCS, Cellular, PDA and Notebook equipped with wireless LAN card) by linking location information of AP (Access Point) of Wireless Local Area Network The computer can record the integrated location information service method and the program for realizing the method by interworking with a mobile communication network and a wireless LAN that can provide location-based services in a communication network or a hotspot (region where a wireless LAN is installed). To a recording medium.

Here, the location-based service refers to various application services that can be provided by using a location tracking technology to find a user's location (Geographical Location) and using the location information, and the characteristics of the wireless Internet of 'personalization' and 'mobility' It is emerging as a representative service that shows the best.

Wireless LAN is installed in hotspots such as hotels, airports, seminar halls, campuses, subways, etc., so that the general public can use the wireless terminal to access the Internet. Therefore, it has a function of a wireless network only in a local area as compared to a mobile communication network having national coverage. The radio range of wireless LAN is 100-200M in open area, and it is narrow in the building about 20-50M. That is, the wireless LAN can be regarded as playing a role of a pico cell of a mobile communication network. On the other hand, the mobile communication network has a large coverage, but its position accuracy is 500m ~ 3Km and the accuracy is very low.

Application fields include corporate services such as logistics control / management, dispatch of sales staff, and cargo tracking, as well as services for retrieving traffic information and public facilities, etc. for individual users in case of emergency rescue or breakdown vehicles. Mobile network operators can also be used for differentiated billing, call quality survey and network design. According to the technology for tracking the location of the user (exactly the location of the user's terminal), the most commonly used technology for the service using the existing mobile communication network is a cell-based tracking method and a GPS (Global Positoning System).

Currently, a location information service using a wireless LAN is available in addition to a mobile communication network, which is a method using an AP. Although the three methods differ in the way of identifying the location of the user, they are called location based services in terms of providing services using the location information of the user, and various application services that add the location of the user to existing information. It is possible to provide high value-added services.

Looking at the domestic market, although location-based services have attracted attention as a killer application of the wireless Internet, they can provide considerable convenience when applied directly to real life, such as large location errors, lack of related contents, and interoperability between mobile carriers. Despite that, it has not caused any user reaction.

Therefore, in order to perform the location information service between the WLAN and the mobile communication network under such a situation, a method of reducing the position error and enabling the location tracking even if the two connection networks are connected is required.

The present invention has been proposed in order to meet the above-described requirements. A wireless terminal (PCS, Cellular) is interworking with location information of a base station of a mobile communication network and location information of a wireless access point (AP) of a wireless LAN (W-LAN). Integrate and build location information of PDA and Notebook users equipped with wireless LAN card to enable mobile network and wireless LAN interworking to provide location-based services in any mobile communication network or hotspot. An integrated location information service method and a computer-readable recording medium recording a program for realizing the method are provided.

1 is an exemplary configuration of an integrated location information system through interworking of a wireless communication network and a wireless LAN to which the present invention is applied.

2 is a flowchart illustrating an embodiment of a cell-based location information acquisition process used in the present invention.

3 is a flowchart illustrating an embodiment of a process for obtaining location information based on a WLAN access point (AP) used in the present invention.

4 is a flowchart illustrating an embodiment of a method for providing integrated location information through interworking of a mobile communication network and a wireless LAN according to the present invention.

The present invention for achieving the above object, in the integrated location information service method through the interworking of a mobile communication network and a wireless LAN (W-LAN), when the location information service request, the integrated location server to the subscriber location information database (DB) A first step of searching for and confirming a wireless LAN connection state of the wireless terminal by an IP (Internet Protocol) address being used by the wireless terminal; A second step of retrieving a location information DB of a WLAN access point (AP) to which the corresponding wireless terminal connected to the wireless LAN is connected according to a result of the checking of the first step to obtain a wireless LAN-based location of the corresponding wireless terminal; And a third step of acquiring a cell-based location of the wireless terminal in association with a home location register (HLR) that manages the wireless terminal that is not being connected to the wireless LAN according to the result of the checking of the first step. Characterized in that made.

In addition, the present invention, when the location information service request to the integrated location information service provided with a processor, the integrated location server searches the subscriber location information database (DB), to the IP (Internet Protocol) address that the wireless terminal is using; A first function of checking a wireless LAN connection state of the corresponding wireless terminal; A second function of retrieving a location information DB of a WLAN access point (AP) to which the corresponding wireless terminal is connected to the wireless LAN and obtaining the wireless LAN-based location of the corresponding wireless terminal according to a result of confirming the first function; And acquiring a cell-based location of the wireless terminal in association with a home location register (HLR) that manages the wireless terminal that is not being connected to the wireless LAN according to a result of confirming the first function. A computer readable recording medium having recorded thereon a program is provided.

The present invention provides a new location-based service by combining the advantages of nationwide coverage of a mobile communication network and the advantages of high location precision of a wireless network through interworking of a mobile communication network and a wireless LAN network. That is, an interworking method of AP location information between a base station location of a mobile communication network and a public WLAN and an integrated location information service through the same are provided.

Therefore, in order to perform the integrated location information service providing method through interworking of the mobile communication network and the wireless LAN according to the present invention, the first mobile communication network periodically polls the location of the user's wireless terminal to locate the base station to which the user belongs to the mobile communication network location. Stores in the information server, and sends the user ID (ID), the ID of the AP currently connected, and the user IP address information provided upon successful authentication to the WLAN location information server through the authentication process when accessing the WLAN. The server finds the location information of the AP by using the ID of the AP and stores the location information of the terminal in the location information server, and thirdly stores each location information in the integrated location information server and requests the user's location information based on this. It is provided to an application service or service requester.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration diagram of an integrated location information system through interworking of a wireless communication network and a wireless LAN to which the present invention is applied.

As shown in Figure 1, by using the user location information of the integrated location information server by interworking with the location information server of the mobile communication network and the wireless LAN to a variety of location-based services (location identification and tracking, advertising push, local tailoring) Information, location-based meeting services, etc.).

To this end, a base station location table and a subscriber location table of a mobile communication network as shown in FIG. 2 are managed, and a location information server is required for this.

Here, the base station location information table has at least the following information.

That is, the base station location information table has a "base station ID" indicating the base station identification key, "GLocation" indicating the geographic location information of the base station, and "Location" indicating the administrative location information of the base station.

In addition, the subscriber location table has at least the following information.

That is, it has a " subscriber terminal ID " representing a subscriber station identification key and a " base station ID " representing a key of the base station to which the user belongs.

The wireless terminal of the subscriber periodically communicates with the base station to which the subscriber belongs and updates the information in the database of the visitor location register (VLR), and the location information server updates the information in the subscriber location information DB.

Meanwhile, in order to secure the subscriber location information of the WLAN, a location information server that manages the terminal AP information table and the subscriber location information table of the WLAN as shown in FIG. 3 and needs to provide user location information is required.

Here, the AP location information table has at least the following information about all installed APs.

That is, it has a " AP-ID " representing a key for identifying an AP, " GLocation " representing a geographic location information of the AP, " Location " representing administrative location information of the AP, and a " Hotspot "

In addition, the subscriber location information table manages the following information.

That is, it has a " user ID " representing a user identification key, " AP-ID " representing a key of an accessing AP, and " IP " representing an IP address currently being allocated and connected.

Here, the subscriber location information table can provide the location information of the user by managing the currently connected user, the corresponding AP, and the connected IP address. The subscriber's location information acquisition procedure determines the location of the AP to which the user belongs by using the IP of the AP and the terminal's IP, which are assigned from a DHCP (Dynamic Host Configuration Protocol) server when the user terminal accesses the network.

The operation of the integrated location information service method through interworking of the mobile communication network and the wireless LAN according to the present invention having the above structure will be described in detail as follows.

2 is a flowchart illustrating an embodiment of a cell-based location information acquisition process used in the present invention.

As shown in FIG. 2, when the cell-based location information server requests location information from the cell-based location information server to the home location register (HLR) (201), the HLR is registered with the current HLR. In the case of an established user, the mobile switching center (MSC) is queried for the location of the base station of the user (202). Then, the mobile switching center (MSC) transmits the information of the base station to which the user radio terminal belongs to the home location register (203).

Subsequently, the home location register transmits the location information to the cell-based location information server (204).

3 is a flowchart illustrating an embodiment of a process for obtaining location information based on a WLAN access point (AP) used in the present invention.

As shown in FIG. 3, in order to obtain AP-based location information, the AP-based location information server searches the AP subscriber location information DB (301) and checks whether the terminal is accessing the terminal using the IP address being used (302). .

Subsequently, when the terminal access state is confirmed in step 302, the mobile station searches for the location information DB of the AP to which the subscriber wireless terminal belongs (303), and transmits the location information of the subscriber to the AP-based location information server (303).

4 is a flowchart illustrating an embodiment of an integrated location information service method through interworking of a mobile communication network and a wireless LAN according to the present invention.

As shown in Figure 4, for the integrated location information service through the interworking of the mobile communication network and the wireless LAN according to the present invention, by searching the AP subscriber location information DB in the integrated location information server, the terminal to the IP address that the terminal is using In step 401, it is checked whether or not a connection is established.

In the case of the wireless LAN, when the terminal is abnormally terminated, whether or not the connection state of the terminal is not updated by termination is confirmed, and it is checked whether the terminal is actually connected (402).

Subsequently, when the access state of the terminal is confirmed, the terminal searches for location information of the AP corresponding to step 401 (403).

On the other hand, when the terminal is not in the wireless LAN connection state in steps 401 and 402, by requesting the location information of the terminal to the HLR of the mobile communication network (404) to the location information of the base station that the terminal is connected to the integrated location information server 405.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

The present invention as described above, to complement the narrow coverage of the location information and location accuracy in the indoor (Indoor) which is a disadvantage of the cell-based location information service of the mobile communication network and a disadvantage of the AP-based location information service By interlocking and integrating the location information server of the mobile communication network and the location information server of the wireless LAN, it provides a variety of location information services with higher precision, thereby providing more useful and diverse location information services to users. There is.

Claims (6)

In the integrated location information service method through interworking of a mobile communication network and a wireless LAN (W-LAN), A first step of, upon requesting location information service, an integrated location server searching a subscriber location information database (DB) and confirming a wireless LAN connection state of the corresponding wireless terminal by an Internet Protocol (IP) address being used by the wireless terminal; A second step of retrieving a location information DB of a WLAN access point (AP) to which the corresponding wireless terminal connected to the wireless LAN is connected according to a result of the checking of the first step to obtain a wireless LAN-based location of the corresponding wireless terminal; And A third step of acquiring a cell-based location of the corresponding wireless terminal in association with a home location register (HLR) that manages the corresponding wireless terminal instead of being connected to the wireless LAN according to the result of the checking of the first step Integrated location information service method through interworking of a mobile communication network and a wireless LAN comprising a. The method of claim 1, The wireless terminal, Integrated location information service method through the interworking of the mobile communication network and the wireless LAN, characterized in that the multi-mode integrated terminal supporting the mobile communication network and the wireless LAN. The method according to claim 1 or 2, The integrated location server, An integrated location information service method through interworking with a mobile communication network and a wireless LAN, characterized in that the integration of the location information server of the mobile communication network and the location information server of the wireless LAN. The method of claim 3, wherein The integrated location server, The integrated location information service method through the interworking of the mobile communication network and the wireless LAN, characterized in that for determining whether the wireless LAN connection by checking the connection state of the user. The method of claim 4, wherein The integrated location server, The location information service method through the interworking of the mobile communication network and the wireless LAN, characterized in that for obtaining the location information in accordance with the connection state of the other party according to the other party's location request. In the integrated location information service with a processor, A first function of, upon requesting location information service, an integrated location server searching a subscriber location information database (DB) and confirming a wireless LAN connection state of the corresponding wireless terminal by an Internet Protocol (IP) address being used by the wireless terminal; A second function of retrieving a location information DB of a WLAN access point (AP) to which the corresponding wireless terminal is connected to the wireless LAN and obtaining the wireless LAN-based location of the corresponding wireless terminal according to a result of confirming the first function; And A third function of acquiring a cell-based location of the corresponding wireless terminal in association with a home location register (HLR) that manages the corresponding wireless terminal and not being connected to the wireless LAN according to a result of confirming the first function A computer-readable recording medium having recorded thereon a program for realizing this.