KR20030037114A - Position information support apparatus for mobil communication terminal using local area radio network and method thereof - Google Patents

Abstract

PURPOSE: An apparatus and a method for providing position information of a mobile communication terminal by using a local area network are provided to sense movement between terminals by using a Bluetooth, a local area network, thereby providing position information of the terminal. CONSTITUTION: Plural terminals have a short distance wireless transmission module. One or more Bluetooth base stations(100) interlink plural PICONETs with a LAN(Local Area Network) by plural terminals as a PICONET unit. A server(200) manages plural base stations and stores the change of IP(Internet Protocol) address of each terminal. The server also recognizes the change of IP address as the change of position and thus transmits the position change of a specific terminal to the each registered terminal. A gateway(300) interlinks the LAN(Local Area Network) with Internet network or PSTN(Public Switched Telephone Network).

Description

Device and method for providing location information of mobile communication terminal using local area wireless network {POSITION INFORMATION SUPPORT APPARATUS FOR MOBIL COMMUNICATION TERMINAL USING LOCAL AREA RADIO NETWORK AND METHOD THEREOF}

The present invention relates to an apparatus and method for providing location information of a mobile communication terminal using a short range wireless network. In particular, the present invention relates to a short range wireless network for detecting a movement between terminals and providing the user with location information. An apparatus and method for providing location information of a mobile communication terminal using a wireless network are provided.

Recently, as the mobile communication terminal is popularized, researches on portable computers for wireless Internet and electronic mail transmission / reception in connection with this are being actively conducted, and a lot of diffusion has been made.

The mobile communication terminals are currently performing wireless communication and wired communication between terminals using CDMA and GSM methods, and are being converted to W-CDMA and CDMA2000 methods for next generation mobile communication (IMT-2000). .

By the way, the communication method of the terminal is a long-distance communication method, and the infrared communication (IrDA) method is used for short-range direct communication between terminals.

However, in the infrared communication method, the terminal to be communicated should face each other due to the characteristics of the infrared ray having the straightness, and when there are obstacles between the two terminals, communication cannot be performed. The next-generation near-field interface specification was created in May 1998 by the Bluetooth Special Interest Group (SIG).

Here, Bluetooth refers to a technology that wirelessly connects portable devices such as portable PCs and mobile phones within a narrow range at low cost. In other words, it uses radio frequency to exchange voice and data between various digital devices without a physical cable.

For example, if Bluetooth technology is implemented in mobile phones and notebook computers, you no longer need to use the cable you currently use to connect your phone and notebook. As a result, virtually any digital device, including printers, desktops, fax machines, keyboards and joysticks, can be part of a Bluetooth system.

1 is an exemplary view illustrating a concept of a piconet and a scatternet topology of Bluetooth.

As shown in FIG. 1, communication between each device using Bluetooth is always a master (M), and around seven devices are slaves (S), and a total of eight devices can directly communicate with each other. The network configuration that can communicate is called PICONET.

In this case, each of the slave devices S may set itself as a master M and other seven devices as slaves. That is, every device can form its own piconet, each with its own master.

In addition, a single scatternet (SCATTERNET) is formed by tying up the ten piconets as described above, so that communication with each other within a maximum of 80 ranges (scatternet range) is also possible with devices belonging to other piconets without belonging to their own piconets. It becomes possible.

In other words, direct communication between devices belonging to its own piconet range is possible, and devices belonging to different piconet ranges can be routed to a maximum of 80 piconets by way of a piconet whose master is a slave device belonging to its own piconet range. Can communicate within a maximum of 10 ranges.

However, many services using Bluetooth have not been developed, and one of them, in detecting the position of the terminal, can detect the movement of the terminal by whether it is out of the piconet range and provide accurate location information service of the Bluetooth terminal. There was a problem that could not be provided.

In view of the above problems, the present invention provides an apparatus and method for providing location information of a mobile communication terminal using a short range wireless network, which detects movement between terminals using Bluetooth, which is a short range wireless network, and provides the user with location information. Has its purpose.

1 is an exemplary view shown to explain the concept of piconet and scatternet topology of Bluetooth.

2 is a block diagram of an apparatus for providing location information of a mobile communication terminal using a short-range wireless network according to the present invention.

3 is a flow chart of a method for providing location information of a mobile communication terminal using a local area wireless network of the present invention.

** Description of symbols for the main parts of the drawing **

100: Bluetooth base station 200: server

300: Gateway

As described above, a plurality of terminals agreeing to exchange location information, transmitting current status information through periodic communication, and receiving and displaying location information of another terminal agreed to exchange location information, and the plurality of terminals A plurality of Bluetooth base stations for interworking a plurality of piconets with a LAN using a terminal as a piconet unit; A server for managing the plurality of Bluetooth base stations, storing changes in IP addresses of terminals, recognizing changes in IP addresses as changes in positions, and transferring position changes of specific terminals to each registered terminals; The local wireless network is configured as a gateway for interworking with an Internet network or a PSTN network to detect a change in IP address according to the movement of the piconet unit of each terminal user, and the location information is transferred to another terminal that has agreed to exchange location information. It is achieved by sending, described in detail with reference to the accompanying drawings, the present invention as follows.

FIG. 2 is a block diagram illustrating a configuration of an apparatus for providing location information of a mobile communication terminal using a short range wireless network according to the present invention. As shown in FIG. 2, two short range wireless transmission modules are provided to enable data communication. The terminal BD; At least one Bluetooth base station (BBS) 100 for interworking a plurality of piconets and a LAN; A server 200 for managing the plurality of Bluetooth base stations (BBS); The gateway 300 is configured to interwork with the local area network or the Internet network or the PSTN network.

A network consisting of the plurality of piconets and a plurality of Bluetooth base stations (BBSs) interworking them into a single LAN is called a blue pack.

Hereinafter, the configuration and operation of the present invention configured as described above in more detail.

First, the Bluetooth device includes link management means for performing link setting, encryption, etc. of Bluetooth, wireless transmission / reception means for performing a radio signal transmission / reception operation in a predetermined frequency range (2.402 GHz to 2.480 GHz), and storing an ID of a counterpart device to communicate with. And a means for generating an alarm and a control means for controlling the respective means in a module form.

In addition, the communicable distance of the Bluetooth is determined by the power class, and Bluetooth is classified into three types of power classes. In other words, there are Class 1 that can communicate up to 100m radius with maximum 20dBm output, and Class 2 that can communicate up to 20m radius with class 2 that can communicate up to 20m radius, and Class 3 that can output up to 0dBm below.

In addition, every Bluetooth device has a unique BD_ADDR (Bluetooth device address), and the Bluetooth link management means on the master side becomes the main, and the inquiry operation is performed at predetermined time intervals to see if other Bluetooth devices are in a certain range. It is supposed to perform

That is, when the Bluetooth link management means of the master sends an inquiry to the Bluetooth device of the slave, the Bluetooth link management means of the slave sends its BD_ADDR (Bluetooth device address) to the master.

3 is a flowchart of a method for providing location information of a mobile communication terminal using a short-range wireless network according to the present invention. As shown in FIG. 3, users A and B of the terminal BD agree to provide location information using IP addresses of each other. Then, it is determined whether the users A and B use the terminals BD in the same blue pack, and the location information can be exchanged through different paths according to the determination result.

First, if the terminal BD of the user A and the B is using the terminal BD in the same bluepack, the unique IP address of the terminal BD of the A and B is registered in the server 200 managing the bluepack. Inform the agreement to provide the location information.

Then, the A and B terminals BD periodically transmit their information to the corresponding BBS 100, and the BBS 100 makes the server 200 recognize the authorized information.

If A or B, A, and B move and move out of the range of their piconet while moving to another piconet, the terminals BD of users A or B, A, and B are different. You will be assigned an IP address. Such an IP address is a foreign IP address (FOREIGN IP ADDRESS), which is an IP address given when entering the current piconet from another piconet.

As described above, the A or B, which is given the foreign IP address, and the terminal BD used by the A and B recognize the IP address again to the BBS 100, and the BBS 100 changes the IP address. Notify the server 200.

The server 200 receiving the IP address change of each terminal BD grasps the location information of the piconet corresponding to the IP address. When the IP address of each terminal BD is changed, the terminal BD is changed. If it is determined that the terminal agrees with the location information exchange, and the terminal agrees with the location information exchange, it notifies that the location information of each terminal BD can be exchanged between the terminals BD.

That is, if both A and B located in the same piconet (PICONET (0)) move and move to different piconets (PICONET (1), PICONET (3)), A and B respectively move the piconet (PICONET ( 1), a foreign IP address given to PICONET 3) is given, and the changed IP address is transferred to the BBS 100, and this information is updated in the server 200, and the IP address is changed. The recognized server 200 transmits the location information of B to the terminal BD of user A, and transmits the location information of user A to the terminal of user B.

By repeating the above process, user A can keep track of the location of user B, and likewise user B can also know the location of user A.

In addition, the above process is a case where A and B are located in the same blue pack, and if the user A and user B are not a user located in the same blue pack, the above method cannot be used. Each registers its own IP address with its HOME AGENT and the other home agent (FOREIGN AGENT), as well as its BluePack and Piconet information.

The home agent is a home network router of a mobile node. When the mobile node leaves the home, the home agent transmits a datagram through a tunnel and transmits current location information of the mobile node. It plays a role.

After registering as described above, the terminal BD of the user A and the user B transmits their information to the home agent through periodic communication.

The information thus delivered is stored in the server 200 of each home agent.

Through the information transmitted as described above, the server 200 of the home agent can detect a change in the IP address of the terminal of the user A and the user B. At this time, when the IP address is changed, the other user terminal registered to be changed. (BD) to inform the location information.

The above example is intended for two terminal users, but the present invention is not limited to the number of terminal users.

As described above, the location can be provided, and various applications and conveniences can be expanded.

For example, if a child's terminal and a parent's terminal are registered for location information transmission, the parent can know the child's location in the department store, amusement park, etc. through the terminal, and the server can change the position and speed of the terminal that the child carries. By storing it, you can also know the direction of the child to prevent the occurrence of the missing child.

Each such application service requires an application of a corresponding terminal, and various applications can be realized through the development of the application.

In addition, in order to easily recognize the change in the position, the radius of the piconet is reduced as much as possible, and as the distance between the adjacent piconets becomes more dense, the precise position information of the terminal can be transmitted.

As described above, an apparatus and method for providing location information of a mobile communication terminal using a local area wireless network according to the present invention detects a location movement of a specific terminal on a piconet basis and transfers the location movement information to another registered terminal of the mobile terminal. By knowing the location information and the direction and speed information, it is possible to provide a variety of user applications and use a pre-configured short range wireless communication network without using another system to implement the location movement information. Therefore, there is an effect that can provide the information desired by the user more effectively and inexpensively.

In addition, various services are possible by the development of various applications, thereby improving the use efficiency of the Bluetooth terminal.

Claims (6)

A plurality of terminals that agree to exchange location information, transmit current status information through periodic communication, and receive and display location information of other terminals agreed to exchange location information, and the plurality of terminals in piconet units. A plurality of Bluetooth base stations for interworking a plurality of piconets with a LAN; A server for managing the plurality of Bluetooth base stations, storing changes in IP addresses of terminals, recognizing changes in IP addresses as changes in positions, and transferring position changes of specific terminals to each registered terminals; Apparatus for providing location information of a mobile communication terminal using a short-range wireless network, characterized in that configured as a gateway for interworking with the short-range wireless network and the Internet network or PSTN network. According to claim 1, If the terminal agreed to the exchange of a plurality of location information is located in the same blue pack, the information is registered only in the corresponding server, and if not located in the same blue pack, each server of each home agent Device for providing location information of a mobile communication terminal using a short-range wireless network, characterized in that for registering information in the. The method of claim 1, wherein the plurality of terminals are provided with short-range wireless application software that receives information on the position movement of a specific terminal stored in a server and calculates a moving direction and speed by changing the position of the terminal. An apparatus for providing location information of a mobile communication terminal using a network. A plurality of terminal users agree to exchange location information; Registering location information exchange agreements with a server of a corresponding home agent if the plurality of terminal users are all located in the same blue pack; Detecting and updating, at the server, a change in the IP address according to the positional movement of the piconet unit of the terminal; Recognizing the IP address change of the terminal as a change in the location of the terminal and transmitting the location information of the specific terminal to the other terminal registered with the exchange of the location information providing location information of the mobile communication terminal using a short-range wireless network Way. According to claim 4, If there is one or a plurality of terminals that are not located in the same blue pack among the plurality of terminal users agreed to the exchange of location information, the information of all the terminals are registered in the server of the home agent of each terminal, A location information providing method of a mobile communication terminal using a short range wireless network, characterized in that for updating the location information of the terminal. [5] The mobile communication terminal of claim 4, wherein the piconet is configured to be as small as possible within a range that does not violate the intended use, and the spacing between each piconet is as compact as possible. How to provide location information.