KR20030024232A - Calling person method for wireless local area network - Google Patents

Abstract

PURPOSE: A method for calling a user in a wireless LAN(Local Area Network) is provided to offer a service for calling an object using a terminal installing a wireless LAN card in an office or a building installing the wireless LAN. CONSTITUTION: A terminal of a user judges whether an object connects to a network using an IP(Internet Protocol) address of the object who the user wants to call(S1,S2). If the object connects to the network, the terminal of the user transmits a calling signal to a terminal of the object(S3) and waits for a response signal about the calling signal(S4).

Description

CALLING PERSON METHOD FOR WIRELESS LOCAL AREA NETWORK}

The present invention relates to a method of calling a user of a terminal constituting a wireless LAN, which is a short-range wireless communication technology. In particular, the present invention relates to a short-range call that allows a party to be called through a terminal equipped with a wireless LAN card in a building office or a local space having a wireless LAN facility. The present invention relates to a user calling method of a wireless communication network.

In general, a wireless LAN is a short-range wireless communication network for transmitting and receiving wirelessly by converting transmission data between radio signals and optical signals between personal computers and servers of each organization.

Wireless LAN technology uses radio frequency technology to send and receive data wirelessly with minimal line connections.

As described above, the wireless LAN enables a so-called moving LAN, which allows a user to move data freely with a simple facility.

Wireless LAN standard protocols include IEEE 802.11 in the US, HiperLAN / 2 in Europe, and MMAC (Multimedia Mobile Access Communication Systems) in Japan. Currently, protocols of 11Mbps and 30Mbps or higher are being formulated.

Users who use a terminal capable of accessing a wireless LAN in a place where a wireless LAN is installed may be assigned with a unique IP address to access a network.

Therefore, a service for calling a specific user using the IP address is possible in a place where a WLAN facility is provided.

In addition, in a wired LAN environment, the network connection is possible only when the user's terminal is connected to the wired LAN cable, so that the pager function of the terminal in various places is almost impossible, but the wireless LAN is currently capable of connecting to a distance of about 30 to 100 m. As a result, roaming service between different networks is possible while moving, so that calling service is available anywhere in the area where WLAN is installed.

Accordingly, the present invention has been made in view of the necessity as described above, and provides a service for calling a counterpart through a terminal equipped with a WLAN card in an office or a building space in which a WLAN is installed. Its purpose is to provide a user calling method.

1 is an exemplary view showing an embodiment of a user calling method of a local area wireless communication network of the present invention.

2 is a diagram illustrating a configuration of a local area wireless communication network in which the user calling method of FIG. 1 is implemented.

** Explanation of symbols for main parts of drawings **

10, 20, 30, 40: wireless network 1, 2, 3, 4: access point

50: wired network

The present invention for achieving the above object, the first step of receiving and storing the information of the other party to call from the user and determines whether the other party is connected to the network; When the other party is connected to the network, the second terminal transmits a call signal to the other party and waits for a response to the call signal.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an embodiment of a user calling method of a local area wireless communication network according to the present invention. As shown in this figure, whether the other party is connected to a network using the IP address of the other party that the user wants to call. Determining the first step (S1 ~ S2); When the other party is connected to the network, a second step (S3 to S4) of transmitting a call signal to the other party's terminal and waiting for a response signal to the call signal will be described.

First, as shown in FIG. 2, an office in which a wireless LAN is installed includes a wired network 50 in which each terminal is connected with a LAN cable, and a wireless network 10 to 40 in which a plurality of terminals are connected through radio signals or optical signals. It is composed of access points (1-4) for connecting the wired network 50 and the wireless network (10-40).

Here, the radius of the network configured by the one wireless network (10 ~ 40) is about 30-100m, the appropriate number according to the area (building office, temporary event venue, distribution warehouse, distribution company, etc.) using the wireless LAN. When the access point (1-4) of the installation will be able to connect to the wired network 50 in the area within a certain distance.

The frequency of the signal used in the WLAN is an ISM band (Industrial, Scientific, Medical Band) is a frequency band that can be used without permission, and the WLAN currently uses the 2.4 GHz band.

Hereinafter, a method of building a user pager system in an area where a WLAN is configured will be described in detail.

First, a call service program is required to perform a user call service in a WLAN.

The call service program includes a module for displaying a network connection state of a counterpart, a module for transmitting a call signal, and a module for displaying a received call signal.

In detail, the module displaying the network connection status communicates with a database that stores unique IP address information (IP address, hereinafter referred to as IP address) owned by each user constituting the network. It determines whether it is connected and informs the calling service user.

The module for transmitting the call signal is responsible for transmitting the call signal to the counterpart to call in response to the information received from the module indicating the network connection status.

In addition, the module for transmitting the call signal transmits the call signal according to the protocol used in the wireless network 10 to 40 because it serves to transmit the call signal to the other party.

The transmitted call signal is transmitted to the access points 1 to 4 and converted into a signal suitable for the wired network 50 to the terminal of the other party connected to another wireless network 10 to 40 via the wired network 50. Delivered.

Finally, the module displaying the received call signal is responsible for displaying the call signal transmitted by the call service program of the counterpart terminal.

The call signal is information that the other party wants to transmit, through which the call signal can be known and the other party's message is confirmed. In this case, the information is a reason for the user to call the other party, a date, time and place for the meeting, or a message to be communicated to the other party.

Here, a description will be given of a process in which the call service is performed as an example.

A user who owns a terminal of a specific wireless network executes a call service program and inputs information of a party to be called.

Therefore, the call service program receives the information of the counterpart that the user wants to call and performs the following process.

Subsequently, the module displaying the network connection status of the calling service program searches for the IP address in a database storing the IP address of the terminal connected to the network using the IP address of the called party, and the other party searches for the wireless network ( 10 to 40) determine whether it is connected to notify the user.

Here, a database storing an IP address of a terminal connected to a network should be established. The construction of such a database may vary depending on a system. For example, a system for providing a fixed IP address and a system for providing a floating IP address are different, and thus, a database needs to be constructed.

At this time, if the other party to call is connected to the wireless network (10 ~ 40), the module for transmitting the call signal transmits data according to the communication protocol of the WLAN.

The data is transmitted to a call service program of a counterpart terminal to be called through an access point connecting the wireless network 10 to 40 and the wired network 50.

The module displaying the call signal of the call service program of the counterpart terminal notifies the counterpart.

Here, the notifying means uses a voice signal or a vibration signal to notify the counterpart of the call from the user.

The counterpart recognizes the user's call by means for notifying and confirms the user's message via the call signal display module of the call service program.

The user's message is notified to the other party through the display unit of the terminal, and contains information that the user wants to convey. This information is described above and will be omitted.

In this way, the WLAN support terminal can act as a simple pager. In addition, since the wireless LAN environment, a user having a terminal can make a call regardless of where the WLAN is installed.

In addition, it is possible to support a variety of application functions such as video and audio information transmission function using a wide bandwidth of the wireless LAN, broadcasting function to send a message to all terminal users connected to the network.

As described in detail above, the present invention implements the pager function more conveniently by implementing a pager function at a place where people frequently move, such as a building office, a temporary event location, a distribution warehouse of a distribution company using a wireless LAN. It has the effect of enabling communication between people.

In addition, it is possible to support a variety of functions such as video and audio information transmission function, the implementation of the broadcasting function to send a message to all terminal users connected to the network has the effect of creating a variety of applications.

Claims (6)

A first step of storing information of a counterpart the user wants to call and determining whether the counterpart is connected to a network; A second step of transmitting a call signal for information of the other party to be called to the other party's terminal when the other party is connected to the network; And a third step of informing the user of the transmission of the call signal and ending the call. The method of claim 1, wherein the determining of the state in which the other party is connected to the network in the first step comprises: searching the IP address of the other party to be called in a database storing the IP address of the terminal connected to the wireless network, and then calling the network of the other party to be called. A method of calling a user of a local area wireless communication network, characterized in that the connection state is determined. The method of claim 1, wherein in the second step, the call signal has information such as a date, time and place of a specific event or a meeting, or a reason for making a call in order to contain a message to be communicated to the other party. User calling method of a local area network. 2. The short-range wireless communication network of claim 1, wherein the call signal transmitted to the counterpart in the second step is transmitted to the terminal of the counterpart to notify the counterpart via a text signal on a vibration signal or a voice signal or an indicator. How to call user. The method of claim 1, wherein in the second step, the call signal is transmitted to the other party if the other party is connected to the network, and notifies the user that the other party cannot be called unless the other party is connected. User calling method of wireless communication network. 5. The method of claim 4, wherein the notification of the call signal informs the other party that the user is calling and transmits a response signal indicating that the user has notified the call.