KR100332049B1 - Method for notifying location of wireless terminal in keyphone system - Google Patents

Abstract

PURPOSE: A method for notifying the location of a wireless terminal in a keyphone system is provided to easily confirm the location of the wireless terminal or a user of the wireless terminal without performing a telephone call by notifying location information of the wireless terminal using cell information inputted from the wireless terminal registered in the keyphone system and previously stored cell location information. CONSTITUTION: If an extension terminal is hooked off by an extension subscriber or a power of a wireless terminal is turned on, a CPU judges whether a specific function code is inputted through an extension interface unit or a wireless interface unit(S41). If the specific function code is inputted, the CPU detects a specific wireless terminal's number(S42), corresponds to the detected number, and reads cell information previously stored in a memory unit(S43). The CPU detects a cell number from read cell information(S44). The CPU reads cell location information corresponding to the corresponding cell number from the memory unit(S45). The CPU transmits corresponding cell location information through the extension interface unit or the wireless interface unit(S46).

Description

Wireless terminal location notification method in keyphone system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key phone system, and more particularly, by notifying an extension subscriber requesting location information of a specific wireless terminal by using cell information transmitted from a wireless terminal registered in the keyphone system, the location information of the specific wireless terminal. The present invention relates to a wireless terminal location notification method in a keyphone system that enables easy identification of the location of a.

In general, a mobile phone terminal in a mobile telephone switching system is not in a call, but can be answered at any time by calling the mobile phone terminal and is ready to send a signal immediately when a subscriber wants to make a call. That is, regardless of the subscriber's intention, the terminal automatically maintains the ready state for the call. This method has the great advantage that the base station does not need a separate radio emission measure to know the location of the terminal. In this case, there is a disadvantage in that location information on a terminal that is not called cannot be obtained. Therefore, the calling time is longer when the subscriber of the public telecommunication network calls the mobile phone terminal, but this calling method is used in the case of a system with a small number of subscribers because the mobile phone terminal is more frequently used to make a call from the mobile phone. However, as the number of subscribers increases and the number of calls to the mobile phone terminal is increased in the public telecommunication network, the terminal should have a self-registration function and the system should transmit the call signal only to the base station or the base station in the calling area according to the location of the terminal. .

That is, when the mobile phone terminal transmits information on the current location to the base station at regular intervals, the mobile telephone switching system receives this to track the location of the mobile phone terminal. This method was not used when the number of mobile subscribers was small in the past, but when the number of attempts to talk with the mobile terminal increased or the number of base stations increased, it was necessary to use this method to reduce the set channel usage time for the terminal call. .

On the other hand, since the wireless terminal registered in the key phone system does not transmit information related to the current location to the base station, the corresponding key phone system does not know the location of the wireless terminal. You have to do a paging call in every cell to find it.

In addition, conventionally, there was no function of identifying location information of a user who uses a wireless terminal registered in a key phone system. Thus, in order to identify the location of the wireless terminal, a method of dialing a corresponding terminal number is attempted to make a call. Was used. In this case, since the user cannot receive an incoming call when the user is not in proximity to the wireless terminal, the user cannot know where the person is until the call is made with the person using the wireless terminal. In addition, when the wireless terminal is lost, it is very difficult to find the lost terminal because no information related to the location of the wireless terminal is obtained.

As described above, in the conventional key phone system, a method of attempting a call with the user of the wireless terminal is used to determine the location of the wireless terminal. However, the user cannot know where the person is located until the user of the wireless terminal calls. There is a problem, and if the wireless terminal is lost, it is difficult to find a lost terminal because it is unknown.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is that, when cell location information is previously stored in a keyphone system, cell information input from a wireless terminal registered in the corresponding keyphone system and previously stored cell location information are stored. By using this to notify the location information of the wireless terminal, it is possible to easily determine the location of the wireless terminal or the user of the wireless terminal without having to make a call.

Features of the present invention for achieving the above object, the first process of storing the cell information transmitted from the wireless terminal; A second step of detecting a specific function code input by an extension subscriber and a terminal number of a specific wireless terminal, and then extracting cell information corresponding to the detected terminal number; And detecting a cell number from the cell information to retrieve corresponding cell location information, and then transmitting the location information of the specific wireless terminal to the extension subscriber.

1 is a block diagram of a key phone system according to the present invention;

2 is a flowchart illustrating a modified cell information transmission operation in a wireless terminal according to the present invention.

Figure 3 is a flow chart of the cell information storage and change operation in the key phone system according to the present invention.

4 is a flow chart of notification of specific wireless terminal location information in a keyphone system according to the present invention.

Explanation of symbols on the main parts of the drawings

11: central processing unit 12: extension interface unit

13 wireless interface 14 memory section

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

Key phone system (KPS) according to the present invention, as shown in the accompanying drawings, Figure 1, having a central processing unit 11, the internal interface unit 12, the wireless interface unit 13, the memory unit 14 Is done.

The central processing unit 11 controls the operation of the entire system, and monitors the cell information (terminal number and cell number of the wireless terminal) transmitted from the wireless terminal, and records or changes the recorded cell information in the memory unit 14. And cell information from the memory unit 14 according to a specific wireless terminal location information request of an extension terminal or a wireless subscriber using the wireless terminal, and then through the extension interface unit 12 or the wireless interface unit 13. Send to the extension terminal or wireless terminal.

The station interface unit 12 connects stations to match signals inputted to and outputted from stations, and the radio interface unit 13 matches signals inputted to and received from wireless terminals registered in the system.

The memory unit 14 stores cell information input from the wireless terminal, and stores cell position information according to the cell number of the divided cell for accessing the wireless terminal of the system.

An internal processing operation for transmitting location information of a specific wireless terminal according to a specific wireless terminal location information request of an extension subscriber in a keyphone system (KPS) configured as described above is as follows.

First, the cell information transmission operation in the wireless terminal is performed in the order shown in FIG.

When the wireless terminal is registered in the keyphone system KPS by the wireless terminal user (step S21), the cell information for the wireless terminal is stored in the memory unit 14 of the keyphone system KPS. Checks the electric field reception intensity of the current cell and stores it in its own memory unit (step S22). After step S22, the wireless terminal periodically checks the electric field reception strength of the neighboring cell (step S23), and then determines whether there is more than the electric field reception strength of the cell previously stored in its memory unit among the checked field reception strength of the neighboring cell. (Step S24), if there is no more than the electric field reception strength of the previously stored cell, the flow returns to step S23 to repeat the operation, and if there is more than the electric field reception strength of the previously stored cell, the channel is switched to the cell corresponding to the electric field reception intensity. (Step S25). After step S25, the wireless terminal transmits the cell information on the switched channel, that is, the changed cell information, to the key system (KPS) (step S26), and returns to step S22 to perform the repeated operation.

Meanwhile, the cell information storage and change operation in the key phone system KPS are performed in the order shown in FIG. 3.

When the initial cell information according to the registration of the wireless terminal is input through the air interface unit 13, the CPU 11 stores the cell information in the memory unit 14 (step S31). After step S31, the central processing unit 11 monitors the cell information input from the corresponding wireless terminal, that is, compares the cell information previously stored in the memory unit 14 (step S32), and determines whether there is changed cell information (step S32). Step S33). If there is no cell information changed in step S33, the flow returns to step S32 to perform a repeating operation. If there is changed cell information, the cell information previously stored in the memory unit 14 is changed (step S34), and the flow returns to step S32. Will perform the action.

The location of a specific wireless terminal in the keyphone system (KPS) is performed using a wireless terminal or an extension terminal. First, an extension subscriber of the keyphone system (KPS) uses a wireless terminal to determine the location of a specific wireless terminal. When the terminal number of the specific wireless terminal for which the specific function code and the location information are to be known is input, the inputted specific function code and the terminal number are applied to the central processing unit 11 through the wireless interface 13, and accordingly, The CPU 11 retrieves the cell position information from the memory unit 14 and transmits the cell position information to the wireless terminal that has requested the position confirmation of the specific wireless terminal through the wireless interface unit 13. On the other hand, when the extension subscriber of the corresponding key phone system (KPS) inputs the terminal number of the specific wireless terminal for which to know the specific function code and location information for confirming the location of the specific wireless terminal using the extension terminal, the wireless interface unit ( The cell location information is transmitted to the corresponding extension terminal through the highway connected to the extension interface unit 12, not to 13).

The operation of notifying the location information of the specific wireless terminal in the key phone system KPS as described above is performed in the order shown in FIG. 4.

First, when the extension terminal is off hooked by the extension subscriber or the power of the wireless terminal is turned on by the subscriber, the central processing unit 11 identifies the terminal through the extension interface unit 12 or the wireless interface unit 13. It is determined whether a function code is input (step S41), and when a specific function code is input, the terminal number of a specific wireless terminal which is continuously input is detected (step S42), and then the memory unit 14 corresponds to the detected terminal number. Cell information stored in advance is retrieved (step S43). After step S43, the central processing unit 11 detects the cell number from the extracted cell information (step S44), and withdraws the cell position information corresponding to the cell number from the memory unit 14 (step S44). The cell position information, that is, the position information of the specific wireless terminal is transmitted through the extension interface unit 12 or the air interface unit 13 (step S45), and the operation is terminated. On the other hand, if a specific function code is not input in step S41, the conventional call processing operation is performed (step S47).

Accordingly, when an extension subscriber of a key phone system (KPS) wants to check the location of a user who uses a wireless terminal, the subscriber can use the cell location information provided from the key phone system (KPS) without having to talk to the wireless terminal user. Even if the wireless terminal is lost, the wireless terminal can be found using the cell location information, and even if the power of the wireless terminal is discharged, it can be found using the finally inputted and stored cell information. .

As described above, when the cell location information is previously stored in the keyphone system, the present invention uses the cell information input from the wireless terminal registered in the corresponding keyphone system and the previously stored cell location information to extend the location information of the corresponding wireless terminal. By allowing the subscriber to be notified, the location of the wireless terminal or the user of the wireless terminal can be easily identified without making a call.

Claims (1)

A first step of storing cell information transmitted from the wireless terminal; A second step of detecting a specific function code input by an extension subscriber and a terminal number of a specific wireless terminal, and then extracting cell information corresponding to the detected terminal number; And detecting a cell number from the cell information to retrieve corresponding cell location information, and then transmitting the location information of the specific wireless terminal to the extension subscriber. Location notification method.