KR20020014172A - Terminal for wireless telephone network - Google Patents

Abstract

PURPOSE: A radio telephone network terminal is provided to be adopted to a place unsuitable for installation of a telephone line and a working environment by wirelessly connecting a radio telephone terminal and a private exchange and reduce cost and time by adding a handset card or replacing with a large capacity terminal in case of increasing an extension network. CONSTITUTION: A handset unit(23) forms a call channel with a user of a radio telephone terminal and controls the call channel. A control unit(21) controls each handset unit, performs a scanning and controls units to connect a call requested from an external source to a desired user, connect and control a call channel between in-office radio telephone terminal users, and perform a smooth operation of the call channel. A terminal having the units is installed at one side of a wall and handles a call request of each radio telephone terminal, a call connection to outside, a call channel control between a handset unit and the radio telephone terminal, and a call channel connection and control between in-office radio telephone terminal users. In case that a line is to be increased in the terminal, a handset card can be added, and if there is no remaining line or if it is not possible to add a handset card, the terminal can be replaced with a large capacity terminal.

Description

Wireless Telephone Network Terminal {TERMINAL FOR WIRELESS TELEPHONE NETWORK}

The present invention relates to a terminal for wirelessly connecting a private private branch exchange and a wireless telephone terminal. More particularly, the present invention relates to an apparatus for allowing a terminal to communicate with a plurality of wireless telephone terminals using a TDD scheme.

Existing premises network is made by connecting one line of each wireless telephone terminal and private exchange by wire. That is, one extension and one line are allocated to one radio telephone terminal.

The above method is used by directly connecting a line of a private exchange and a telephone terminal with a line.

However, in the above method, since the telephone terminal and the switching line must be connected by wire, the office environment may be complicated because the telephone line or the connection line leaks to the outside and the wiring line is exposed to the field of view.

In addition, since the number of lines is fixed, the number of lines for the private terminal and the private exchange period must be newly installed when adding a line due to the increase of users, etc. If there is no spare line, a line is added to add a line. Since it has to be purchased and installed, there is a problem of time and cost.

The present invention for solving the above problems, the purpose is to enable the call by connecting the premises terminal and the telephone terminal wirelessly.

Another object of the present invention is to reduce the time and cost consumed when establishing or adding an internal circuit.

In order to achieve the above object, the present invention provides a terminal wirelessly connected to an internal wireless telephone terminal and a wired connection to an external line, wherein the terminal uses a wireless telephone terminal having a respective slot number. HANDSET UNIT, which is in charge of establishing a wireless call channel with the user and controlling the call channel, connects the control and channel scanning for the handset unit with the required CALL from the outside to the desired user. The control unit (CONTROL UNIT) for controlling the unit so that the connection and control of the communication channel between the users of the wireless telephone terminal and the smooth operation of the communication channel.

The present invention also provides that the channel is searched at regular intervals, each search section comprises a time slot with slot numbers of respective wireless telephone terminals, and the first time slot in the search section includes an external telephone call request and an internal user. P-CHANNEL for calling a specific user for the call request, and A-CHANNEL for the wireless phone terminal users to make a call request.

The present invention also provides a method for transmitting / receiving the channel, using the same carrier frequency (CARRIER FREQUENCY), and using the TDD (TIME DIVISION DUPLEX) method of changing the direction of the transmission and reception channel alternately at high speed in bidirectional transmission. Characterized in that.

The present invention also provides a terminal that is wirelessly connected to an on-premises wireless telephone terminal and is connected to an external line by wire. When the extension or new extension line is added, the handset is added to a terminal or a terminal having a large capacity. Characterized in that it can be used interchangeably.

Figure 1 shows the configuration of the present invention in one embodiment.

Figure 2 shows the terminal structure of the present invention in one embodiment.

3 shows a channel structure of the present invention.

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

10: wireless telephone terminal 20: wireless telephone network terminal

21: CONTROL UNIT

23: HANDSET UNIT

30: PBX (Private Switch EXCHANGE)

40: external telephone line

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

Figure 1 shows the configuration of the present invention in one embodiment. As shown in the drawing, the wireless telephone terminal 10 having the respective slot number is connected to the outside line 40 and is installed in the subscriber's premises so as to make external or internal calls with the inside telephone line. The private exchange (PBX) 30 and the private exchange 30 is connected by wire, and is composed of a terminal 20 to enable wireless transmission and reception with the wireless telephone terminal 10.

Figure 2 shows the structure of a terminal of the present invention in one embodiment. As shown, the control unit consists of a control unit and a plurality of handset units.

The handset unit 23 is a device that is responsible for the formation of a call channel and control of a call channel with a user of a wireless telephone terminal, and the control unit 21 controls and scans each handset unit and requests from the outside. It is a device that connects the CALL to the desired user, and controls the units to connect and control the call channel between the users of the company's wireless telephone terminal and to perform the smooth operation of the call channel.

Terminals equipped with the above units are installed on one side of the premises, such as the wall, CALL request of each wireless telephone terminal, telephone connection to the outside, call channel control between the handset unit and the wireless telephone terminal, between users of the wireless telephone terminal It is in charge of connection and control of call channel.

When the line is increased in the terminal, a handset card which will be described below is added, or when there is no spare line or when a handset card cannot be added, the terminal can be replaced with a large terminal.

The operation of the terminal will be described with reference to FIG. 3 as follows.

3 shows a channel structure of the present invention. As shown, it consists of N timeslots (200), and forms a wireless call channel through slot number (assigned to each wireless telephone terminal) assigned to each handset, Separation of transmission and reception for the wireless communication channel uses a TDD (TIME DIVISION DUPLEX) method. This method uses the same carrier frequency (CARRIER FREQUENCY) to transmit data, forming a channel by changing the channel direction alternately at high speed between both transmission directions.

The number of time slots divided as described above is determined within an allowable limit for smooth transmission. The number of handset units in the terminal then equals the number of these timeslots. When a call channel is established with a specific user, data is transmitted and received during the corresponding timeslot period.

The control unit checks the channel at regular intervals, which is marked as a CANNING PERIOD. The search section calls the corresponding user for the call request from the handset unit and the call request from the outside. It will also form channels for different users in the premises. This establishes a call during the slot period assigned to each call channel.

The first slot of each search section is composed of P-CHANNEL and A-CHANNEL. P-CHANNEL is a channel for calling a specific user for external call requests and call requests from other premises users. It is checked and, when requested, calls the desired user.

A-CHANNEL is a channel that users of wireless telephone terminals use to make call requests.

Referring to the operation of the present invention.

First, when a user makes an outside call using the premises telephone terminal, the A-CHANNEL of the time slot of the channel operates and the slot number of the premises wireless telephone terminal to be called is determined. Based on this, the handset unit forms a call channel and controls the user of the wireless telephone terminal. In the control unit, a channel is formed to control a handset unit to which a call is connected, and a line of a private exchange is connected with a channel of a wireless telephone terminal to control a smooth call.

When requesting a call from the outside to the premises, the private exchange transfers the extension number input from the external line to the terminal, and the handset unit of the terminal operates P-CHANNEL to determine the slot number for the requested extension. A channel is formed and the control unit controls the call to make a call by calling the corresponding wireless telephone terminal.

If you want to make an extension call from the premises to the premises, enter the extension number you want to talk to using the wireless telephone terminal, and the P-CHANNEL of the handset unit of the terminal will be activated to determine the slot number and use it to control the two extensions from the control unit. A call channel is established so that a call is made.

The present invention can be used in places where the installation and working environment of the telephone line is difficult because it is a method of wirelessly connecting the wireless telephone terminal and the private exchange, and add a handset card or replace the terminal with a large capacity even when the extension network is increased. By using this method, the cost and time can be saved.

In addition, the present invention has the effect that the sender, the receiver receives the same call quality service by using the TDD (TIME DIVISION DUPLEX) method for transmitting and receiving channel separation.

Claims (4)

In a terminal wirelessly connected to the campus wireless telephone terminal and wired to the outside line, The terminal comprises a handset unit (HANDSET UNIT) responsible for the formation of a wireless call channel and the control of the call channel with a user who wants to use a wireless telephone terminal having a slot number. The control and channel scanning for the handset unit and the call request from the outside (CALL) is connected to the desired user, the unit and the unit to facilitate the operation and connection and control of the call channel between users in the company wireless telephone terminal Wireless telephone network terminal, characterized in that consisting of a control unit (CONTROL UNIT) to control. The method of claim 1, The channel is searched at regular intervals, and each search section is composed of timeslots with slot numbers of respective wireless telephone terminals, and the first time slot in the search section is specific for external telephone call requests and call requests between users in the premises. P-CHANNEL for calling the user, and a wireless telephone network terminal comprising the separation of the transmission and reception channel to the A-CHANNEL for the wireless telephone terminal users to make a call request. The method of claim 2, The method of transmitting / receiving separation of the channel transmits information using the same carrier frequency and uses a TDD (TIME DIVISION DUPLEX) method that forms a channel direction alternately at high speed between both transmission directions. Wireless telephone network terminal. In using a terminal which is connected wirelessly with a wireless telephone terminal in the premises and wired to an external line, The wireless telephone network terminal, characterized in that when the addition or expansion of the premises line further comprises the handset is implemented to be added to the terminal or to be replaced by a large capacity terminal.