KR20100018415A - Method and device for making buddy group using short distance wireless communication network - Google Patents

Abstract

PURPOSE: A method and a terminal for forming a buddy group using a short distance wireless communication network are provided to form a buddy group using a short distance wireless communication network based on a client-client, thereby reducing a load of a system related to a central server. CONSTITUTION: A searcher(210) searches a buddy terminal. A transceiver(220) transmits buddy request information and representative terminal identification information to the searched buddy terminal. The transceiver receives buddy approving information and buddy terminal identification information. A buddy group manager(270) sets a communication link to form a buddy group.

Description

Method and device for making buddy group using short distance wireless communication network using short-range wireless communication

The present invention relates to group communication, and more particularly, to an apparatus and method for generating a buddy group using short-range wireless communication.

With the development of short-range wireless communication technology, which has been actively studied since the 1990s, products that exchange predetermined information with peripheral devices in relatively short distances have been commercialized. Products that use short-range wireless communication between devices and peripherals are being introduced.

Short-range wireless communication can be largely divided into infrared (IR) and high frequency (RF), high frequency means that the communication using the radio frequency band, it is characterized in that the frequency band in advance to operate at the corresponding frequency. Representative examples of high frequency methods include radio frequency identification (RFID), Bluetooth, Zigbee, and wireless local area network (LAN).

On the other hand, personal computer (PC) applications, such as instant messengers, that allow users to check the availability of users with respect to other user lists have been successful in the PC industry. For example, applications of this kind provided by a service such as America OnLine have a PC user registered with the same service to create a list of other users, and any one of the other users may have started to use the service. To be notified whether it is in an access state.

In addition, users can generate status messages describing their availability, and users can also exchange messages, files and other data through their lists. Most of these applications rely on the Internet and their IP-based addressing system to operate regardless of the actual location and distance of the application. Thus, users can use communication to know each other's digital activities regardless of their actual location.

However, it is often convenient to establish a buddy group with people who are close to you. There is a need for a system for forming and changing a buddy group according to the location of a user terminal.

In addition, the instant messenger on the premise of a conventional server-client requires a lot of cost and related infrastructure for forming a buddy group, and takes a long time.

Accordingly, the present invention has been made to solve the above-described problem, and aims to reduce the load on the system side associated with the central server by forming a buddy group based on the client-client using short-range wireless communication.

In addition, an object of the present invention is to allow a user terminal to form a buddy group based on the location, thereby forming a community with people near the user.

According to an aspect of the present invention for achieving the above object, a method for forming a buddy group using short-range wireless communication in the representative terminal, (a) searching for a buddy terminal located within the communication range of the short-range wireless communication; (B) transmitting buddy request information and representative terminal identification information to the retrieved buddy terminal through the short range wireless communication; and (c) a buddy through the short range wireless communication in response to the buddy request information from the retrieved buddy terminal. Receiving the approval information and the buddy terminal identification information (d) establishing a communication link with the buddy terminal receiving the buddy approval information and the buddy terminal identification information to form a buddy group; and (e) the position of the representative terminal is If changed, the buddy with the communication link released by repeating steps (a), (b), (c) and (d) above. Excluding a terminal from a buddy group, a buddy group forming method using short-range wireless communication may be provided by including a buddy terminal with a newly established communication link in a buddy group.

According to another aspect of the present invention, a method for providing a recording medium in which instructions executable in a digital processing apparatus are implemented by the above method and in which a program that can be read by the digital processing apparatus is recorded.

According to another aspect of the present invention, in the representative terminal to form a buddy group using short-range wireless communication, the short-range wireless communication to the searched buddy terminal to search for a buddy terminal located within the communication range of the short-range wireless communication Transmitting and receiving the buddy request information and representative terminal identification information through the short-range wireless communication in response to the buddy request information from the retrieved buddy terminal through the short-range wireless communication and the buddy approval A buddy group is formed by establishing a communication link with a buddy terminal that has received the information and the buddy terminal identification information. When the position of the representative terminal is changed, the buddy terminal whose communication link is released is excluded from the buddy group. Set buddy terminal to buddy group By including it is possible to provide a representative device for forming a buddy group using a short-range wireless communication including a buddy group management unit that forms a new buddy group.

According to the present invention, by forming a buddy group based on the client-client using short-range wireless communication, it is possible to reduce the load on the system side associated with the central server.

In addition, the present invention allows the user terminal to form a buddy group based on the location, thereby forming a community with people near the user.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in describing the present invention with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals regardless of the reference numerals. Duplicate explanations will be omitted.

1 is a schematic view showing an overall system for forming a buddy group according to an embodiment of the present invention.

As shown in FIG. 1, in order to form a buddy group using short-range wireless communication according to the present invention, a representative terminal 10 attempting to form a buddy group for the first time, and the short-term wireless communication with the representative terminal 10 are determined. At least one buddy terminal 20-1, 20-2, 20-3, 20-4, 20-5, which is formed as a terminal group by exchanging information of a general terminal, commonly referred to as 20 It is composed of).

In the present invention, the 'representative terminal 10' is a representative terminal 10 that attempts to group terminals for the first time, and the 'buddy terminal 20' refers to grouping by receiving buddy request information from a predetermined terminal (representative terminal 10). One or more communication terminals that become members of the group by participating in the.

However, the representative terminal 10 and the buddy terminal 20 may be implemented as separate terminals having different hardware structures for a specific purpose, but generally include a short range wireless communication module having the same or similar hardware structure. It is preferable that the terminal is implemented to be used as the representative terminal 10 or the buddy terminal 20 according to the situation (grouping attempt or not), and thus the 'representative terminal 10' and the 'buddy terminal 20' in the present invention. The term should be understood to be used merely to distinguish between terminals attempting a terminal grouping request for the first time.

The representative terminal 10 is a terminal that attempts to group terminals by using short-range wireless communication, and transmits buddy request information and representative terminal identification information to at least one or more terminals within a range capable of short-range wireless communication.

In this embodiment, the representative terminal is a terminal whose position can be changed, a PDC (Personal Digital Cellular) phone, a PCS (Personal Communication Service) phone, a PHS (Personal Handyphone System) phone, a CDMA-2000 (1X, 3X) phone, WCDMA ( Wideband CDMA phone, Dual Band / Dual Mode phone, Global Standard for Mobile (GSM) phone, Mobile Broadband System (MBS) phone, Digital Multimedia Broadcasting (DMB) phone, Smart phone, Handheld devices that may include communication functions such as mobile phones, public switched telephone network (PSTN) terminals, Voice over Internet Protocol (VoIP), Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), Media Gateway Control (MEGACO) , Personal digital assistants (PDAs), hand-held PCs, notebook computers, laptop computers, WiBro terminals, MP3 players, MD players, and more, and international roaming services. IM provides mobile communication service A portable electric and electronic device means a handheld-based wireless communication device of all kinds, including a T-2000 (International Mobile Telecommunication-2000) terminal, a Universal Mobile Telecommunication Service (UMTS) -based terminal, and the like.

'Buddy request information' is information for forming a buddy group, and simply includes a request for the buddy terminal 20 to receive it whether or not to participate in the buddy group. This can include information about characteristics, introductions, existing members, and so on.

In addition, the 'representative terminal identification information' is information that can identify the representative terminal 10 as it is expressed. Preferably, the terminal includes a telephone number, a location identifier, for example, a location area identity, a routing area identity, and the like. It can be an International Mobile Station Identity (IMSI) or Temporary Mobile Subscriber Identity (TMSI), even though it uses a terminal serial number and terminal subscriber information instead of a telephone number. If the information is identifiable by the other party (buddy terminal 20) by connecting to a server (for example, location information management server, home location register) will correspond to this.

The buddy terminal 20 receives the buddy request information and the representative terminal identification information transmitted from the representative terminal 10, and transmits corresponding buddy approval information and buddy terminal identification information back to the representative terminal 10.

'Buddy approval information' is information for notifying whether the buddy group attends, and may simply be information about joining or not participating in the buddy group, and when the buddy request information requests personal information of the user of the buddy terminal 20 Will include the personal information (eg, name, gender). In addition, 'buddy terminal identification information' will be considered to correspond to the information that can identify the representative terminal 10, like the above representative terminal identification information.

The representative terminal 10 receives a buddy approval information and each buddy terminal identification information from at least one buddy terminal 20, and forms a buddy group based on the buddy approval information. Then, the result information is transmitted back to the at least one buddy terminal 20, so that the buddy group formation can be known not only to the representative terminal 10 but also to the buddy terminal 20. FIG.

In summary, in the method of forming a buddy group using short-range wireless communication according to an embodiment of the present invention, at least one buddy terminal 20 receives buddy request information and representative terminal identification information transmitted from the representative terminal 10. Buddy approval information and buddy terminal identification information corresponding thereto are transmitted to the representative terminal 10 again, and the representative terminal 10 forms a buddy group and transmits the result information back to the buddy terminal 20.

According to another embodiment of the present invention, when the representative terminal 10 moves and its location is changed, a new buddy group may be formed with terminals including a short range wireless communication module within a range capable of new short range wireless communication. . This means that if the wireless communication range of the representative terminal 10 is changed, the list of buddy terminals 20 corresponding to members of the buddy group is changed.

The range of short-range wireless communication, that is, the service area, for example, Bluetooth communication 10m to 1Km, RFID communication 2m, Zigbee communication 30-100m, NFC is about 10cm, but the application and application range by the development and development of technology Is expanding.

Referring to FIG. 1, when the representative terminal 10 moves from the zone A to the zone B, the representative terminals of the zone B among the buddy terminals 20-1, 20-2, and 20-3 forming the buddy group in the zone A are illustrated. Buddy terminals 20-1 and 20-2, which are not able to communicate wirelessly with 10, are withdrawn from the buddy group. In addition, among the buddy terminals 20-3, which belonged to the buddy group in the zone A and the terminals 20-4 and 20-5, which approved the buddy request among the terminals capable of wireless communication with the representative terminal 10 in the zone B, the representative terminals Together with (10) a new buddy group is formed.

 When a buddy group is formed in this way, group members (including representatives) can use the group-specific communication service. For example, when hiking in a school, a company, or a club, a birdie group may be formed between people located at close range (for example, teams). This allows each member, including the team leader, to know the status and location of other members, and can respond quickly to urgent situations, especially when some members are lost or encounter dangerous things.

In addition, it is possible to easily share the necessary information (eg, phone number, etc.) between the grouped members (eg, friends, colleagues) through the terminal grouping.

2 is a functional block diagram showing a configuration of a representative terminal for generating a buddy group using short-range wireless communication according to an embodiment of the present invention.

Referring to FIG. 2, the representative terminal 10 according to the present embodiment includes a searcher 210, a transceiver 220, a location change detector 230, a storage 240, an input 250, and a display ( 260 and the buddy group manager 270.

It is intended to clarify that the division of the components in the present specification is only divided by the main function of each component. That is, two or more components to be described below may be combined into one component, or one component may be provided divided into two or more for each function. Each of the components to be described below may additionally perform some or all of the functions of other components in addition to the main functions of the components, and some of the main functions of each of the components are different. Of course, it may be carried out exclusively by. Therefore, the presence or absence of each component described through this specification should be functionally interpreted.

The search unit 210 searches for the buddy terminal 20 located within the short range wireless communication range. The search may be performed by broadcasting a scanning signal for querying the buddy terminal 20 through short range wireless communication. In this case, broadcast means generally transmitting a signal to all terminals capable of receiving a signal at the same time, and is different from unicast transmitting only to a specific receiver.

The transceiver 220 transmits the buddy request information and the representative terminal identification information to the retrieved buddy terminal 20 through the short range wireless communication, and the buddy approval information and the buddy from the retrieved buddy terminal 20 through the short range wireless communication. Receive terminal identification information. In addition, the transceiver 220 transmits the buddy group formation or reformation information to the buddy terminal 20 using short-range wireless communication.

The transceiver 220 includes a short range wireless communication module and includes, for example, Radio Frequency Identification (RFID), Bluetooth, Zigbee, Wireless Local Area Network (NLAN), and Near Field Communication (NFC). It may be a communication module.

In brief, RFID (Radio Frequency Identification) transmits tag information by receiving energy from an external radio signal or an RFID tag composed of a transponder chip and an antenna, which is mainly made of a semiconductor, from an external radio signal. The RFID reader is a technology that can transmit information by receiving it.

In addition, the Bluetooth technology standard is a technology standard for providing short-range wireless access for data and voice using 2.4GHz, and is based on the IEEE 802.11 standard. Originally, Bluetooth was a word referring to a standard for low-power wireless communication between devices, but it also refers to a communication method using the Bluetooth standard. It can be applied to. The data rate of Bluetooth is 433.9kbps for symmetrical and 723.2kbps for asymmetrical communication mode. In the case of voice transmission, 64kbps synchronous transmission method is used, and up to three voice channels are available, and 10Mbps-class technology capable of video transmission is under development.

ZigBee, another short-range wireless communication technology, is a standard technology for home automation and data networks with low transmission speeds. With the touch of a button, you can control lights and VCR on / off anywhere in your home. can do. ZigBee is standardized in IEEE 802.15.4, and the dual PHY form uses 2.4GHz and 868 / 915MHz frequency bands, and the modem method is Direct Sequence Spread Spectrum (DS-SS). The transfer rate is a technology with 20 to 250kpbs.

In the case of a wireless LAN, the connection between clients in the hub is used instead of cabling, and the ISM 2.4GHz and IEE802.11a standards, which are frequency bandwidths of the IEE802.11b and IEE802.11g standards, are used. It uses ISM 5GHz, a frequency bandwidth. In the case of such a wireless LAN, it is common to have an access point that serves as a base station in a wireless LAN network and provides a data relay function between devices equipped with a wireless LAN card. In the case of the ad hoc range, an access point is not required and the devices can simultaneously connect and communicate.

The location change detector 230 detects a change in the location of the representative terminal 10 and outputs it to the buddy group manager 270. For example, the location change detector 230 may detect that the location of the representative terminal 10 is changed by periodically measuring the location information of the terminal using a global positioning system (GPS).

The storage unit 240 may store various data by a process performed in the representative terminal 10. For example, computer programs, constant data used for such processing, and variable data to be temporarily stored in a processing process can be stored. In addition, the storage unit 240 may store identification information and a buddy group list of the buddy terminal 20 participating in the buddy group.

The input unit 250 is a device that receives a user's instruction on the representative terminal 10 and receives a signal for commanding formation of one or more buddy groups. Such a command may be implemented by pressing a hotkey of the representative terminal, or may be implemented by soft buttons such as setting through a menu.

The display part 260 is comprised using a liquid crystal display panel, an organic electroluminescent panel, or another display device, and can display an image according to image data. In particular, when the display unit 260 is involved in communication between buddy groups belonging to the buddy group, for example, the buddy terminal 20 list, the buddy terminal 20 information, one buddy terminal 20 (or the representative terminal 10). ) And a request and a message issued to the other buddy terminal 20, the response of the other buddy terminal 20, etc. can be displayed.

The buddy group manager 270 may be configured to include internal functional elements of the representative terminal 10 according to the present invention (eg, the searcher 210, the transceiver 220, the location change detector 230, and the storage 240). ), The input unit 250 and the display unit 260 are managed. In addition, the buddy group manager 270 forms a buddy group by establishing a communication link with the buddy terminal 20 that receives the buddy approval information and the buddy terminal identification information.

In addition, when the buddy group manager 270 receives a signal that the location has been changed from the position change detector 230 of the representative terminal 10, the buddy group manager 270 buddy the buddy terminal 20 in which the communication link with the transceiver 220 is released. Except from the group, a new buddy group is formed by including a buddy terminal 20 in which a communication link is newly established with the transceiver unit 220 in the buddy group.

In addition, the buddy group manager 270 creates a list of the buddy terminals 20 participating in the buddy group, generates an identification information or a status display icon of each buddy terminal 20, and controls the buddy group 20 to be displayed on the display unit 260. The buddy group list generated by the buddy group manager 270 may be a buddy terminal 20 belonging to all buddy groups generated before and after the location change, or may be limited to only the buddy terminal 20 to which a current communication link is established.

3 is a flowchart illustrating a method of forming a buddy group according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating a buddy group list displayed on a representative terminal according to an embodiment of the present invention. Each step described below is performed by each internal component of the representative terminal 10, but will be collectively described as the representative terminal 10 for the convenience of understanding and explanation.

In operation 310, the representative terminal 10 searches for a terminal located within a short range wireless communication range. The representative terminal 10 performs a terminal search including a short range wireless communication module to minimize power consumption in the terminal on a predetermined time basis in order to find another terminal including the short range wireless communication module.

For example, the representative terminal 10 may search for a terminal including the short range wireless communication module by broadcasting a scanning signal for querying the buddy terminal 20 through short range wireless communication. This transmits a signal for inquiring whether the representative terminal 10 can perform short-range wireless communication, and the other terminal can check the scanning signal when the terminal is close enough to receive the scanning signal.

In operation 320, the representative terminal 10 transmits a message including buddy request information and representative terminal identification information to the searched terminal. The buddy request information is a message for inquiring whether the terminal which has checked the scanning signal wants to join the buddy group.

Thereafter, the representative terminal 10 receives the buddy approval information and the retrieved terminal (buddy terminal 20) identification information from some or all of the retrieved terminals. The buddy approval information is a message in which the terminal receiving the buddy request information responds with "yes" or "no" to whether the buddy group participates.

For example, assume that the representative terminal 10 collects the buddy terminal 20 through Bluetooth communication. The representative terminal 10 transmits packet information to a Bluetooth terminal to be present at a predetermined frequency, and in response to this signal, each Bluetooth terminal puts the Bluetooth terminal address and buddy acknowledgment information into a frequency hopping synchronization (FHS) signal. To (10).

According to another embodiment of the present invention, the terminal responding to the message of the representative terminal 10 is not only the representative terminal 10 but also the buddy terminal 20 of another person within the range of wireless communication, the buddy approval information and buddy terminal identification information Send it.

In operation 340, the representative terminal 10 establishes a communication link with the buddy terminal 20 that has approved the formation of the buddy group. In the above-described example, the representative terminal 10 synchronizes with the buddy terminal 20 that has transmitted the Bluetooth address, and when the synchronization between devices is established, the communication link is established by switching to the same frequency hopping pattern between the two devices. do. Specifically, the representative terminal 10 is a master device and the buddy terminal 20 operates as a slave device, performs clock synchronization with the Bluetooth terminal, and establishes a communication link by entering a connected state. .

In operation 350, the representative terminal 10 may display the buddy terminals 20 that have established the communication link as a buddy group list and display the buddy group list. The buddy group list may display identification information of each buddy terminal 20 (for example, a user name and a phone number), and state of each buddy terminal 20 (for example, during communication, away, or other). Icon).

In step 360, the representative terminal 10 periodically determines whether the position of the representative terminal 10 has been changed. According to this embodiment, the position change of the representative terminal 10 can be detected using techniques known in the art such as GPS.

When the location is changed as a result of the determination, the representative terminal 10 repeats the step 340 in step 310 to re-form the buddy group. In the present exemplary embodiment, the representative terminal 10 deletes the buddy terminal 20 from which the short-range wireless communication is not possible due to the movement of the representative terminal 10 from the buddy group and newly sends the short-range wireless communication to the buddy terminal 20. Request a buddy to form a new buddy group.

In operation 380, the representative terminal 10 changes the buddy group list displayed on the display area.

Referring to FIG. 4, the buddy group list displays the buddy terminal 20 currently forming the buddy group by using an activation icon (eg, seasonal, toy) of the buddy terminal 20 so that the user can recognize the buddy group 20. In addition, the buddy group list distinguishes the buddy terminal 20 (the terminal belonging to the buddy group) from which the communication link is released according to the change of the position of the representative terminal 10 from the current buddy group terminal, for example, an inactive icon (Fig. Can be displayed as 4).

The user of the representative terminal 10 may transmit a personal message to the buddy terminal 20 corresponding to the activation icon in the buddy group list. That is, when the user selects any one of the buddy terminals 20 corresponding to the activation icon in the buddy group list, the personal message may be transmitted through short-range wireless communication by specifying the address of the selected buddy terminal 20 instead of the broadcast. have.

As such, according to one embodiment of the invention, there is no need to register with a central server to use the invention. In other words, the client-client system of the present invention is an important difference compared to PC-hosted Internet-based presence applications.

In addition, since the present invention uses near field communication technology, users are free to use all of the proximity coexistence functions provided by the present invention, and furthermore, the access of the published user's personal information is located within the near field communication range. Rest assured that it is limited to people.

The method of forming a buddy group using short-range wireless communication according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media, such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

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

1 is a schematic diagram showing an overall system for forming a buddy group according to an embodiment of the present invention.

2 is a functional block diagram illustrating a configuration of a representative terminal for generating a buddy group using short-range wireless communication according to an embodiment of the present invention.

3 is a flowchart illustrating a method of forming a buddy group according to an embodiment of the present invention.

4 is a diagram illustrating a buddy group list displayed on the representative terminal according to an embodiment of the present invention.

<Description of Signs for Main Parts of Drawings>

10: representative terminal 20: buddy terminal

210: search unit 220: transceiver

230: position change detection unit 240: storage unit

250: input unit 260: display unit

270: buddy group management

Claims (13)

In the method of forming a buddy group using short-range wireless communication in the representative terminal, (a) searching for a buddy terminal located within a communication range of the short range wireless communication; (b) transmitting buddy request information and representative terminal identification information to the retrieved buddy terminal through the short range wireless communication; (c) receiving buddy approval information and buddy terminal identification information through the short-range wireless communication in response to the buddy request information from the retrieved buddy terminal; (d) forming a buddy group by establishing a communication link with the buddy terminal receiving the buddy approval information and the buddy terminal identification information; (e) When the location of the representative terminal is changed, repeating steps (a), (b), (c) and (d) to remove the buddy terminal from which the communication link is released from the buddy group and newly establish a communication link. Forming a new buddy group by including a configured buddy terminal in a buddy group Buddy group forming method using short-range wireless communication comprising a. The method of claim 1, And transmitting, by the representative terminal, buddy group formation information performed in steps (d) and (e) to the buddy terminal using short range wireless communication. The method of claim 1, And displaying a list of buddy terminals including identification information of buddy terminals belonging to the buddy group in a display area. The method of claim 1, The search is A method of forming a buddy group using short range wireless communication is performed by broadcasting a scanning signal for querying the buddy terminal through the short range wireless communication. The method of claim 1, The location change of the representative terminal A method of forming a buddy group using short-range wireless communication, which is recognized by periodically measuring location information of a terminal using GPS. The method of claim 1, The short range wireless communication is Bluetooth, The setting of the communication link A method of forming a buddy group using short-range wireless communication performed by the representative terminal as a master device and the buddy terminal as a slave device. In the representative terminal to form a buddy group using short-range wireless communication, Search unit for searching for a buddy terminal located within the communication range of the short-range wireless communication The buddy request information and the representative terminal identification information are transmitted to the retrieved buddy terminal through the short range wireless communication, and the buddy approval information and the buddy terminal identification information are received through the short range wireless communication in response to the buddy request information from the retrieved buddy terminal. Receiving transceiver and A buddy group is formed by establishing a communication link with a buddy terminal receiving the buddy approval information and the buddy terminal identification information, and when the position of the representative terminal is changed, removes the buddy terminal from which the communication link is released from the buddy group and newly The buddy group management unit forming a new buddy group by including a buddy terminal having a communication link in a buddy group. Representative terminal to form a buddy group using a short-range wireless communication including a. The method of claim 7, wherein And a buddy group using short-range wireless communication, the display unit including a display unit displaying display information including identification information of a buddy terminal belonging to the buddy group on a display area. The method of claim 7, wherein The transceiver unit And a buddy group using the short range wireless communication, wherein the buddy group forming information is transmitted to the buddy terminal using short range wireless communication. The method of claim 7, wherein The search is And a buddy group using short-range wireless communication, which is performed by broadcasting a scanning signal for querying the buddy terminal through the short-range wireless communication. The method of claim 7, wherein The location change of the representative terminal Representative terminal for forming a buddy group using the short-range wireless communication that is recognized by measuring the position information of the terminal periodically using GPS. The method of claim 7, wherein The short range wireless communication is Bluetooth, The setting of the communication link And a buddy group using short-range wireless communication performed using the representative terminal as a master device and the buddy terminal as a slave device. The method of claim 7, wherein The transceiver unit When any one of the representative terminal and the buddy terminal requests data inquiry to the counterpart terminal, the counterpart terminal provides the information on the data stored therein to the requesting terminal using short-range wireless communication. Representative terminals forming a birdie group.

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