KR20110033630A - Method and apparatus for providing instant messaging service - Google Patents

Abstract

PURPOSE: A messenger service providing device and a method thereof are provided to supply a messenger service through a wirelessly connected computer by installing a messenger for a wireless communication with a portable terminal to a plurality of computers. CONSTITUTION: A plurality of computers(210-1,210-2) transmits messenger data of a messenger server to a connected portable terminal(220). The plurality of computers transmits messenger data of a portable terminal to a messenger server. A RSSI(Received Signal Strength Indication) of a connected computer is down to below threshold value, the portable terminal connects to a computers of the best RSSI in wireless. The portable terminal transceives messenger data through the connected computer in wireless.

Description

Method and apparatus for providing instant messaging service

The present invention relates to a messenger service, and more particularly, to a messenger service providing method and apparatus for allowing a user to move freely in an office or home and receive a messenger service.

With the rapid development of information and communication technology, communication means for communicating with each other or exchanging information in addition to the conventional telephones are diversified.

One of them is an instant messaging service (hereinafter referred to as "messenger service"). The messenger service is a service that allows users to select a chat partner and send a file while chatting over the Internet. Recently, in addition to text chat, a messenger service is provided with a web camera to perform video chat. Are also providing services that allow a user to exchange voices with each other using a headset. In particular, recently, as the low-cost Internet phone is activated, a service for performing a voice conversation with the other party using a messenger service has been in the spotlight.

However, in order to perform a voice conversation using such a conventional internet phone or messenger service, the headset needs to be wired to his computer, so that the user can talk only at his / her seat where the computer is installed, and have a personal conversation. There was a discomfort that could not be communicated while moving to or from the office or indoors.

In order to solve this problem, a method of installing a Bluetooth dongle on a user's computer and a user making a voice call using a wireless headset has been proposed. There was still a problem that calls could be made only around the computer's computer.

In addition, recently, the spread of the Internet phone has been activated, the user can use the Internet phone and the wireless handset connected to the Internet network by wire, such as a cordless phone installed in a normal home, can freely move in the office while making calls However, there was a problem that Internet telephony literally performed only a telephone function through the Internet network, but not a messenger-specific function such as text chatting or video transmission.

Existing VoIP requires a contract through a separate telecommunications provider to connect with a regular telephone, and is also limited to a messenger program connected to a specific operator's switching network.

In addition, representative programs such as Skype include a product using a method of accessing an 802.11x WLAN and a DECT method.

In this case, the wireless LAN connection setup and AP automatic handover function are not available, and the communication distance is also connected to the server using the ISM band such as 5.8Ghz, 2.4Ghz and 1.7Ghz band and connected to the server of the service provider to connect PSTN or It is a form of using call with identification number between same subscribers.

In such a case, the wireless access AP of the using terminal shall use a connector using a wireless LAN or other radio frequency.

However, as digital conversion transmission / reception of wireless devices is common, products such as 2.4Ghz and 5.8Ghz are generally limited by using ICs using technologies such as wireless LAN or DECT due to their frequency resources and universality. There are many

The problem to be solved by the present invention is to provide an apparatus and method for providing a messenger service that can freely move and use all the functions of an instant messaging service.

The messenger service device of the present invention for solving the above problems is to receive messenger data from a messenger server and wirelessly transmit it to a portable terminal connected to the messenger server, and to transmit the messenger data wirelessly received from the portable terminal to the messenger server. A plurality of computers; And when the strength of the signal received from the computer to which the computer is connected is lower than the threshold value, examines the strength of the signal received from the plurality of computers, and wirelessly connects to the computer having the best signal strength. And a portable terminal for wirelessly transmitting and receiving the messenger data.

In addition, the plurality of computers are connected to the mobile terminal of the main user, and transmits the messenger data wirelessly received from the mobile terminal of the main user to the messenger server, and the messenger data received from the messenger server is carried by the main user. Main user management unit for wireless transmission to the terminal; And messenger data wirelessly received from the portable terminal of the connected user to the messenger server and connected to the portable terminal of a user other than the main user (access user). A main user management unit wirelessly transmitting to the portable terminal, wherein the main user management unit transmits audio data included in the messenger data received from the messenger server to the portable terminal of the main user, and text data included in the messenger data. The image data may be transmitted to a portable terminal of the main user or output to a display device connected to a computer according to the setting of the main user.

The portable terminal transmits user identification information to a computer (first computer) to be connected, and the first computer transmits the user identification information and IP address information of the first computer to the messenger server, and the messenger server. The ID may identify the user ID and transmit the messenger data received from the computer of the conversation counterpart having the conversation with the user to the first computer.

The portable terminal may include an input unit for inputting information by a user and a display unit for displaying information to a user, and when a messenger server connection command is input from the user, the portable terminal may receive a signal received from the plurality of computers. A user ID and password are transmitted to a computer having the best strength to request a connection to a messenger server, and the computer to which the portable terminal is connected may transmit a user ID and password to the messenger server to access the messenger server.

On the other hand, the messenger service providing method of the present invention for solving the above problems, (a) a plurality of computers executing a messenger program; (b) when the user logs in to the messenger server through his or her computer and selects a chat partner, the messenger server setting up a chat channel between the user computer and the computer of the chat partner; (c) the user computer relaying the user's portable terminal and the messenger server to wirelessly transmit and receive messenger data including audio data to the portable terminal to provide a messenger service; And (d) while the step (c) is performed, the portable terminal measures the intensity of the signal received from the user computer, and if the intensity of the signal falls below a threshold, the intensity of the received signal among the plurality of computers. Is handed off to the best computer, and the messenger server establishes a chat channel between the computer (first relay computer) to which the portable terminal is handed off and connected to the computer of the conversation counterpart, and performs the process again from the step (c). Steps.

Further, in the step (d), the portable terminal transmits the user identification information to the first relay computer, the first relay computer transmits the user identification information and its own IP address to the messenger server, You can set up a chat channel with the chat partner's computer.

Further, in the step (d), if the strength of the signal received from the first relay computer falls below a threshold, the portable terminal handoffs to the computer having the best strength of the received signal among the plurality of computers, and the messenger. The server may set up a chat channel between the computer (second relay computer) to which the portable terminal is handed off and connected to the computer of the talk counterpart, and perform the above steps from step (c).

On the other hand, another messenger service providing method of the present invention for solving the above-mentioned problems, (a) the computer having the best signal strength by investigating the strength of the signal received from a plurality of computers adjacent to the portable terminal ( 1) connecting to the messenger server through a relay computer, selecting a chat counterpart from the chat party list and transmitting the chat counterpart; (b) establishing, by the messenger server, a chat channel between the first relay computer and the computer of the talk counterpart; (c) the first relay computer relaying the user's portable terminal and the messenger server to transmit and receive messenger data including audio data wirelessly with the portable terminal to provide a messenger service; And (d) while the step (c) is performed, the portable terminal measures the strength of the signal received from the first relay computer, and if the signal strength falls below a threshold, the reception of the plurality of computers is performed. Hand off to the computer with the best signal strength, and the messenger server establishes a chat channel between the computer (second relay computer) to which the portable terminal is handed off and connected to the computer of the conversation counterpart. Performing the step again.

Further, in the step (d), the portable terminal transmits the user identification information to the second relay computer, the second relay computer transmits the user identification information and its own IP address to the messenger server, You can set up a chat channel with the chat partner's computer.

The plurality of computers may output text data and video data included in the messenger data to a display device connected to the mobile terminal when the connected mobile terminal is the mobile terminal of the main user. .

According to the present invention, when a plurality of computers are located in a space such as an office, a messenger program of the present invention capable of wirelessly communicating with a user's portable terminal is installed in the plurality of computers, and the user wirelessly connects to the portable terminal. The messenger service can be provided through the computer. Accordingly, the user may be provided with a messenger service such as voice chat or video chat while moving in the corresponding space.

In particular, the present invention provides a messenger service through a connected computer by accessing a computer having a good signal strength by investigating the strength of a signal received from a plurality of computers, thereby allowing the user to access a callable space. Ramen has the effect of providing a messenger service while moving freely regardless of distance, regardless of its own AP or owned by others.

Hereinafter, a messenger service method and apparatus according to a preferred embodiment of the present invention will be described. However, in the following embodiments, an instant messaging service is described as an example, but the present invention is not limited to the instant messaging service, and all services that transmit and receive data through wired or wireless communication networks, such as Internet telephony and video conferencing. Applicable to Therefore, a messenger data to be described later is a concept including all text, video, and audio data, and a computer to be described later can communicate with a mobile terminal wirelessly, and can be connected to a messenger server through a wired or wireless Internet network. Note that it is applicable without providing the functionality of.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 are block diagrams showing the configuration of a messenger service providing apparatus according to a preferred embodiment of the present invention. Referring to FIG. 1, as in an office or a home, a plurality of computers 210 are interconnected through an internal communication network, and the plurality of computers 210 are connected to a messenger server through a wired or wireless communication network such as a wired or wireless Internet network. 100).

The plurality of computers 210 correspond to the portable terminal 220 carried by the user, and each of the portable terminals 220 stores the ID and password of the user, and the plurality of computers 210 correspond to the portable terminal 220. The identification information of the mobile terminal 220 is stored.

In addition, in order to use the messenger service of the present invention, the messenger program according to the present invention is installed in the plurality of computers 210, and a transmitting and receiving device capable of communicating with the user's portable terminal 220 is installed inside the computer. It is installed in dongle format or connected via USB cable.

The mobile terminal 220 communicating with the plurality of computers 210 is implemented in the form of a handset or a headset, and may include messenger data (audio data, text data, and image data) wirelessly received from the computer 220. And, it is used in the same meaning hereinafter) and outputs the messenger data received from the user to the computer 210 by wireless.

3 is a diagram illustrating the configuration of a plurality of computers and portable terminals according to a preferred embodiment of the present invention, and illustrates the messenger service of the present invention using the same.

The computer 210 constituting the messenger service device of the present invention performs a function of a general computer, and when the messenger service program according to the present invention is installed, as shown in FIG. 3, a messenger manager is installed therein. Therefore, only the configuration related to the messenger service of the present invention will be described.

The computer of the present invention includes a first wireless communication unit 211, a main user manager 213, and a plurality of connected user managers 215, which are implemented by a dongle connected by a USB method or installed inside the computer. The main user manager 213 transmits the messenger information received from the messenger server 100 to the portable terminal 220 of the main user through the first wireless communication unit 211 when the computer main user uses the messenger function. The messenger data received from the terminal 220 is transmitted to the messenger server 100.

In particular, the main user manager 213 receives text data and video data from the messenger server 100 while the portable terminal 220 of the main user is connected to the main user manager 213 through a display device connected to a computer. To the user.

On the other hand, the connection user manager 215 transmits the ID of the connected user to the messenger server 100 when the portable terminal of another user (referred to as a connected user) other than the portable terminal of the main user connects, and sends a messenger server ( 100 transmits the messenger data for the access user wirelessly to the portable terminal of the access user.

The access user manager 215 performs only a messenger data relay function between the messenger server 100 and the portable terminal of the connected user, and transmits the messenger data received from the messenger server 100 to the portable terminal of the main user or to be connected to a computer. Do not output through the device. Therefore, the main user cannot recognize that the portable terminal of another user is connected to his computer.

The mobile terminal 200 basically includes a speaker 225, a microphone 226, a controller 223, and a second wireless communication unit 221, and includes a display unit 222, a camera 227, and an input unit 224. ) May further include.

When the mobile terminal 220 is implemented as a wireless headset, the second wireless communication unit 221 receives messenger data, which is audio data, from the first wireless communication unit 211 of the user computer 210 and outputs it to the controller 223. The control unit 223 demodulates the audio data and outputs the audio data to the user through the speaker 225, modulates the audio signal of the user received from the microphone 226, and outputs the computer 210 through the second wireless communication unit 221. To send.

In addition, when the mobile terminal 220 is implemented as a handset including a display unit 222, a camera 227 and an input unit 224, the handset includes all of the functions of the headset, and in addition to the above-described functions, The included text data and image data are output to the user through the display unit 222, the information input from the user through the input unit 224 implemented as a keypad or a touch screen and the image data input through the camera 227 Is sent to the user computer 210.

Referring to FIG. 3, the messenger service method of the present invention will be briefly described. First, when a user logs in to the messenger server 100 at his / her seat, the main user management unit 213 of the user computer 210-1 is provided. Receives messenger data (including audio data, text data, image data, etc.) received from the messenger server 100 and transmits the audio data to the user's portable terminal 220 through the first wireless communication unit 211. The text data and the image data are output to a display device such as a monitor connected to the user computer 210-1. In addition, the main user manager 213 receives audio data from the mobile terminal 220 of the user through the first wireless communication unit 211 and transmits the audio data to the messenger server 100.

On the other hand, the control unit 223 of the portable terminal 220 measures the strength of the signal received from the user's computer 210-1 at regular time intervals, and the portable as the user moves in the office by leaving his seat When the distance between the terminal 220 and the user's computer 210-1 increases so that the strength of the signal received from the computer to the portable terminal 220 is lower than the threshold, the portable terminal 220 is connected to another computer in the vicinity. The strength of the signal received from the device is measured, and the signal strength of the signal is handed off to another user's computer 210-2. At this time, the mobile terminal 220 may determine to connect to a computer having the largest signal strength, and request the connection while transmitting a user's ID to a computer to which a new connection is to be made.

The connection user manager 215 of the computer 210-2 that has received a new connection request transmits the ID and its IP address information of the user requesting the connection to the messenger server 100, thereby causing the messenger server 100 to transmit an existing message. Requests to send to them the messenger data sent by the conversation partner.

Meanwhile, the messenger server 100 receiving the user ID and the IP address information carries the messenger data received from the computer 300 of the conversation partner who is currently conducting the conversation by searching the user ID according to the newly received IP address information. The terminal 220 transmits to the newly connected computer 210-2.

The other person's computer 210-2 receiving the messenger data from the messenger server 100 transmits the received messenger data to the portable terminal 220, and the messenger data received from the portable terminal 220 is the messenger server 100. To send.

At this time, the computer 210-2 of the other person does not inform the main user of the fact that the other portable terminal 220 is connected, so that the user of the computer 210-2 is the mobile terminal 220 of the other person It is not possible to recognize that the user is connected to the computer 210-2, and the user who uses the mobile terminal 220 cannot recognize that he or she is connected to the messenger server 100 through the computer 210-2 of another person. do.

However, as described above, when a plurality of portable terminals 220 are connected to one computer, an excessive load is applied to the computer, which may cause trouble to a user's work using the computer. It is desirable to limit the number of mobile terminals.

4A and 4B are flowcharts illustrating the preferred messenger service process of the present invention in more detail. A messenger service method of the present invention will be described with reference to FIGS. 4A and 4B.

First, a plurality of computers used for the messenger service of the present invention executes the messenger program of the present invention at boot time (S402).

Thereafter, the user accesses the messenger server 100 and then logs in by inputting his / her ID and password in his computer 210-1 (S404), and the messenger server 100 logs the user's ID and password. Inquiry to authenticate the user, and transmits the contact list registered by the user in advance to the user computer (210-1) (S408).

The user computer 210-1 displays the contact list to the user through a display device, and when the user selects a contact and inputs a text or requests a voice conversation, the user's computer 210-1 receives the text data and voice conversation request input by the user. Transmit to 100 (S410).

Meanwhile, the messenger server 100 transmits the text data received from the user computer 210-1 to the computer 300 of the conversation counterpart selected by the user, or transmits a voice conversation or a video conversation request to the user computer 210-1. ) And the computer 300 of the conversation counterpart (S420).

After that, the messenger server 100 and the user computer 210-1 relay the portable terminal 220 and the computer 300 of the conversation counterpart (S430).

Specifically, the messenger server 100 receives messenger data (including text data, audio data, and image data) from the computer 300 of the conversation counterpart and transmits the messenger data to the user computer 210-1. The messenger data received from the computer 210-1 is transmitted to the computer 300 of the conversation counterpart (S432).

Meanwhile, the user computer 210-1 also wirelessly transmits the messenger data received from the messenger server 100 to the mobile terminal 220, and wirelessly transfers the messenger data received from the mobile terminal 220 to the messenger server 100. It transmits (S434). At this time, the user computer 210-1 basically transmits audio data from the messenger data to the user's portable terminal 220 wirelessly, and the text data and the image data to the display device connected to the user computer 210-1. Output However, if the user leaves his / her seat and is absent, the user computer 210-1 may transmit all messenger data including text data and video data to the mobile terminal 220.

The mobile terminal 220 outputs audio data wirelessly received from the user computer 210-1 to the user through the speaker 225 while monitoring the strength of the signal received from the user computer 210-1 at regular time intervals. In operation S436, an audio signal of the user input through the microphone 226 is transmitted to the user computer 210-1. However, when the mobile terminal 220 is a handset including a display unit 222 and a camera 227, only audio data may be transmitted and received from the user computer 210-1 according to a user's setting, and image data and text may be used. Data can also be sent and received.

On the other hand, the mobile terminal 220 determines whether the signal received from the user computer 210-1 falls below a threshold at regular time intervals, and determines whether to handoff to another user computer (S438). .

If the strength of the received signal falls below the threshold and is determined to hand off, the mobile terminal 220 examines the strength of the signal received from the other computers, so that the user is sent to the other computer 210-2 having the best signal strength. The connection is requested while transmitting the ID (S439).

The other computer 210-2, which is requested to access from the mobile terminal 220, transmits the user ID and its IP address information to the messenger server 100 to change the chat channel with the other party currently talking to the user. Request to give (S440).

The messenger server 100 receives user ID and IP address information, identifies a chat counterpart currently in conversation with a user, and changes a chat channel with the chat counterpart to a received IP address. The messenger data received from the mobile terminal 220 is transferred to another user computer 210-2 newly connected by the mobile terminal 220, and the messenger data received from the computer 210-2 of the other user is transferred to the computer 300 of the conversation counterpart. It transmits (S452).

In addition, the computer 210-2 of another user newly connected to the mobile terminal 220 performs a function of relaying messenger data between the messenger server 100 and the mobile terminal 220 (S454). That is, the computer 210-2 of the other user allows the other mobile terminal 220 to access the main user management unit 213 even when his main user accesses the messenger server 100 and performs a conversation. ) Outputs text data and video data among messenger data received from the computer of the other party with whom the main user is talking to the main user through the display device, but the access user manager 215 is the messenger server 100. And performs only a relay function between the portable terminal 220 and the portable terminal 220.

On the other hand, the portable terminal 220 connected to another user's computer 210-2 transmits and receives messenger data to and from another connected user computer 210-2 while measuring signal reception strength at regular time intervals (S456). ).

If the reception intensity of the signal falls below the threshold as the user moves, the mobile terminal 220 determines to handoff to another user computer (S458), and in the same manner as the above-described step S438, another user's computer The connection request is performed while transmitting the user ID to the computer of another user whose strength is best among the signals received from the devices (S459).

Since the process performed thereafter is the same as the above-described step S452 to step S459, a detailed description thereof will be omitted.

Up to now, a process of using a messenger service is described when a user logs in to the messenger server 100 on his computer and moves.

FIG. 5 is a diagram illustrating a process of using a messenger service by connecting a messenger server 100 at an arbitrary place using a mobile terminal 220 implemented as a handset. Referring to FIG. 5, a plurality of computers execute the messenger program of the present invention at boot time (S502), and a user who wants to use a messenger service connects the messenger server 100 to the mobile terminal 220 while moving in an office. A command (meaning execution of a messenger function) is input (S504).

The mobile terminal receiving the connection command of the messenger server 100 checks the strength of signals received from the computers around the portable terminal 220 and transmits a user ID and password to a computer having the best signal strength to request connection. (S506). The user ID and password may be directly input by the user or may be stored in the mobile terminal in advance.

The computer receiving the connection request from the mobile terminal 220 requests a login by transmitting a user ID, a password, and its IP address information to the messenger server 100 (S508), and the messenger server 100 authenticates the user and then the user. The contact list registered in advance is transmitted to the computer connected to the mobile terminal 220, the computer connected to the portable terminal 220 transmits the contact list to the mobile terminal 220 through the computer (S510).

The mobile terminal 220 displays the contact list wirelessly received from the computer to the user, and if the user selects the contact, the mobile terminal 220 transmits the selection information to the messenger server 100 through the computer (S520).

The messenger server 100 having received the chat partner selection information sets up a chat channel between the computer 300 of the chat partner and the computer to which the portable terminal 220 is connected (S530).

After the conversation channel is established, the messenger service is performed in the same manner as the above-described steps S432 to S459 (S540). Since the process performed in the step S540 is the same as the above-described steps S432 to S459, a detailed description thereof will be omitted.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 and 2 are block diagrams showing the configuration of a messenger service providing apparatus according to a preferred embodiment of the present invention.

3 is a diagram illustrating the configuration of a plurality of computers and portable terminals according to a preferred embodiment of the present invention, and illustrates the messenger service of the present invention using the same.

4A and 4B are flowcharts illustrating the preferred messenger service process of the present invention in more detail.

FIG. 5 is a diagram illustrating a process of using a messenger service by connecting to a messenger server at an arbitrary place using a portable terminal implemented as a handset.

Claims (10)

A plurality of computers that receive messenger data from a messenger server and wirelessly transmit the messenger data to a portable terminal connected to the messenger server, and transmit messenger data wirelessly received from the portable terminal to the messenger server; And When the strength of the signal received from the computer to which the user is connected becomes lower than the threshold, the strength of the signal received from the plurality of computers is investigated and wirelessly connected to the computer having the best signal strength. And a portable terminal for wirelessly transmitting and receiving messenger data. The method of claim 1, wherein the plurality of computers A main user connected to a portable terminal of the main user, transmitting messenger data wirelessly received from the portable terminal of the main user to the messenger server, and wirelessly transmitting messenger data received from the messenger server to the portable terminal of the main user; Management; And Connected to a mobile terminal of a user other than a main user (access user), and transmits messenger data wirelessly received from the portable terminal of the connected user to the messenger server, and carries the messenger data received from the messenger server to the portable user. Including a main user management unit for wireless transmission to the terminal, The main user manager transmits the audio data included in the messenger data received from the messenger server to the portable terminal of the main user, and the text data and the image data included in the messenger data according to the main user's setting. Messenger service device characterized in that the transmission to the user's portable terminal, or output to a display device connected to the computer. The method of claim 1, The portable terminal transmits user identification information to a computer (first computer) to be connected, the first computer transmits the user identification information and IP address information of the first computer to the messenger server, And the messenger server identifies the user ID and transmits messenger data received from a computer of a conversation counterpart who has been chatting with the user to the first computer. The method of claim 1, The portable terminal includes an input unit for inputting information by a user and a display unit for displaying information to a user, and when a messenger server access command is input from the user, the strength of a signal received from the plurality of computers is increased. Send a user ID and password to the best computer to request a connection to the messenger server, And a computer connected to the portable terminal transmits a user ID and password to the messenger server to access the messenger server. (a) a plurality of computers executing a messenger program; (b) when the user logs in to the messenger server through his user computer and selects a chat partner, the messenger server setting up a chat channel between the user computer and the computer of the talk counterpart; (c) the user computer relaying the user's portable terminal and the messenger server to wirelessly transmit and receive messenger data including audio data to the portable terminal to provide a messenger service; And (d) While the step (c) is performed, the portable terminal measures the intensity of the signal received from the user computer, and if the intensity of the signal falls below a threshold value, the intensity of the received signal among the plurality of computers is increased. Handoff to the best computer, and the messenger server establishes a chat channel between the computer (first relay computer) to which the portable terminal is handed off and connected to the computer of the conversation counterpart, and then repeats the process from step (c). Messenger service providing method comprising a. The method of claim 5, wherein in step (d), The portable terminal transmits user identification information to the first relay computer, and the first relay computer transmits the user identification information and its IP address to the messenger server to establish a chat channel with the computer of the conversation counterpart. Messenger service providing method, characterized in that. The method of claim 5, wherein in step (d), When the strength of the signal received from the first relay computer falls below a threshold, the portable terminal handoffs to the computer having the best strength of the received signal among the plurality of computers, and the messenger server is handed off by the portable terminal. And establishing a communication channel between the connected computer (second relay computer) and the computer of the other party and performing the process again from the step (c). (a) The mobile terminal checks the strength of a signal received from a plurality of adjacent computers, accesses the messenger server through the computer having the best signal strength (first relay computer), and selects the other party in the contact list. Selecting and transmitting; (b) establishing, by the messenger server, a chat channel between the first relay computer and the computer of the talk counterpart; (c) the first relay computer relaying the user's portable terminal and the messenger server to transmit and receive messenger data including audio data wirelessly with the portable terminal to provide a messenger service; And (d) While the step (c) is performed, the portable terminal measures the strength of the signal received from the first relay computer, and if the strength of the signal falls below a threshold, the received signal among the plurality of computers. And the messenger server establishes a chat channel between the computer (second relay computer) to which the portable terminal is handed off and connected to the computer of the conversation counterpart, and restarts from step (c). Messenger service providing method comprising the step of performing. The method of claim 8, wherein in step (d), The portable terminal transmits user identification information to the second relay computer, and the second relay computer transmits the user identification information and its IP address to the messenger server to establish a chat channel with the computer of the conversation counterpart. Messenger service providing method, characterized in that. The method according to any one of claims 5 to 9, The plurality of computers outputs text data and video data included in messenger data to a display device connected to the mobile terminal when the connected mobile terminal is a mobile terminal of the main user. How to provide a messenger service.

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