KR20010073877A - WLL terminal with mlti-line and method for connecting it - Google Patents

Abstract

PURPOSE: A WLL(Wireless Local Loop) terminal having multi lines and method for connecting thereof are provided to allow to be operated with only one antenna and its components by installing a number of terminals and one combiner in one packaged rack. CONSTITUTION: A number of antennas(AN1) receive outside frequency channels. A number of apparatuses for preventing the strike of lighting(P1) prevent noise of the strike of lighting. A combiner(60) combines rated output powers to be emitted from output ends of the antennas(AN1). A WLL terminal has lines equal to the number of lines, in order to wireless transceive multi lines separating from the combiner(60). A key-phone processing device(50) interfaces and controls associated with received signal of the WLL terminal. A number of key-phones are connected the key-phone processing device(50) and output sound signal.

Description

WLL terminal with multiple lines and connection method {WLL terminal with mlti-line and method for connecting it}

The present invention relates to a multi-line type WLL terminal device used in connection with a key-phone telephone and a connection method thereof, and more particularly, to a user using a WLL terminal device in an office using a plurality of telephone lines. The present invention relates to a WLL terminal apparatus having a terminal type multiple line capable of being called and a connection method thereof.

A WLL terminal device that implements multi-line by connecting a key phone to a WLL terminal device that many manufacturers have recently researched and developed will be described below.

1 is a schematic diagram of a keyphone system with a conventional multi-line system.

In FIG. 1, the antennas AN1, AN2, AN3, and AN4 are connected in series with the corresponding low power WLL terminal devices 10, 12, 14, and 16, respectively, and transmit signals received from the antenna. This received signal is interface-controlled at the WLL terminal devices 10, 12, 14, 16 and is passed through the keyphone central system 50 to each line of the WLL terminal device and to ten keyphones. At this time, the terminal device has a low output, for example, 24 dB. In addition, lightning strikers P1, P2, P3, and P4 are installed between the antennas AN1, AN2, AN3, and AN4 and the terminal devices 10, 20, 30, and 40 to prevent noise from lightning. do.

However, the low power WLL terminal apparatus used as shown in FIG. 1 must be accompanied by as many as n WLL terminal apparatuses and antennas if there are n lines in order to wirelessly transmit and receive a plurality of lines simultaneously in conjunction with a key phone. This is because the antenna and the terminal device are independently connected to a predetermined key phone in the key phone system by the terminal device. Here, the mechanical arrangement and space utilization of the antenna, cable, and lightning arrestor of the WLL terminal device is proportional to the number of the WLL terminal device, so that the cable separation, the installation space of the antenna, the grounding facility of the lightning arrester, and the terminal are increased. In an office dense building with a lot of line capacity, it becomes very inefficient and may cause a breakdown due to a short circuit. Moreover, these related devices are expensive.

In order to solve the problems of the prior art as described above, the present invention is to efficiently reduce the number of lines of the cable to wirelessly transmit and receive a plurality of lines in conjunction with the keyphone, the installation space of the antenna, the grounding facility of the lightning arrestor, and the terminal arrangement It is a first object of the present invention to provide a WLL terminal apparatus having multiple lines and a connection method thereof.

In addition, the present invention provides a WLL terminal device having a multi-line which can be operated only by one antenna and its accessories by embedding a plurality of terminal devices and a coupler in one packaged rack, and a method of connecting the same. It is a second object to do.

1 is a schematic diagram of a conventional WLL terminal apparatus showing a connection of a multi-line;

2 is a view schematically showing a WLL terminal apparatus having a multiple line according to the present invention;

3 is another view of another embodiment of the WLL terminal device of FIG. 2, and

4 is a flow chart of a multi-line system in accordance with the present invention.

Explanation of symbols on the main parts of the drawings

10,12,14,16: WLL terminal device

AN1, AN2, AN3, AN4: Antenna

P1, P2, P3, P4: Lightning Arrestor

50: Keyphone Central Processing Unit

60: combiner

70: multi-line rack

72,74,76,78: RF Interface

WLL terminal apparatus having a multiple line according to the first embodiment of the present invention for achieving the above object,

A plurality of antennas for receiving an external frequency channel;

A plurality of lightning protectors for preventing noise of incoming lightning mixed in the signal received by the antenna;

A combiner for coupling the rated transmit power to be radiated at the output of the antenna;

A single WLL terminal apparatus having the same number of circuits as the number of circuits for simultaneously wirelessly transmitting and receiving multiple circuits separated from the combiner;

A key phone processing device which interfaces with and controls the received signal of the WLL terminal device; And,

It is characterized in that it comprises a plurality of key phones connected to the key phone processing device for outputting a voice signal.

In addition, the connection method of the WLL terminal apparatus having a multi-line according to a second embodiment of the present invention, receiving an external frequency channel from a plurality of antennas;

Preventing noise of incoming lightning mixed in the signal received by the antenna by a plurality of lightning protectors;

Coupling, by a combiner, the rated transmit power to be radiated at the output of the antenna;

Simultaneously transmitting and receiving wirelessly the WLL terminal apparatus having the same number of lines as the number of lines separated from the combiner;

Interfacing and controlling a received signal of the terminal device in association with the WLL terminal device and a key phone processing device;

And a plurality of key phones connected to the key phone processing apparatus for transmitting and receiving voice signals.

In addition, the WLL terminal apparatus having a multiple line according to a second embodiment of the present invention, the antenna for receiving a plurality of external frequency channels;

A plurality of lightning protectors for preventing noise of incoming lightning mixed in the signal received by the antenna;

A multi-line rack having one combiner combining the rated transmission power to be radiated from the antenna output in one package and packaged, and having a radio interface card corresponding to the number of terminal devices in the combiner in the packaged rack. ;

A keyphone processing device for interfacing, controlling, and controlling a received signal of the terminal device in association with the multi-line rack; And,

And a plurality of key phones connected to the key phone processing device and outputting a voice signal under the control of the processing device.

In addition, the connection method of the WLL terminal apparatus having a multiple line according to the second embodiment of the present invention,

Receiving an external frequency channel from the plurality of antennas;

Preventing the noise of incoming lightning mixed in the signal received by the antenna by a plurality of lightning protectors;

Coupling, by a combiner, the rated transmit power to be radiated at the output of the antenna;

Wirelessly transmitting / receiving a plurality of lines simultaneously by a WLL terminal apparatus having the same number of lines separated from the combiner;

Embedding the terminal device and one combiner in one package which is a WLL multiline rack;

Air interface corresponding to the number of channels output from the combiner in the packaged rack;

Distributing and controlling a received signal of the terminal device in association with the WLL terminal device and a key phone processing device;

And a plurality of key phones connected to the key phone processing apparatus for transmitting and receiving voice signals.

Hereinafter, the present invention will be described more clearly with reference to the accompanying drawings, FIGS. 2 and 3. Except for the same components throughout FIGS. 1 to 3, the same components are denoted by the same reference numerals.

2 is a view schematically showing a WLL terminal apparatus having a multi-line according to the present invention, in which the antennas AN2, AN3, and AN4 and lightning protection devices P2, P3, and P4 are installed in the multi-line type apparatus of FIG. Similar to a configuration that does not exist.

As shown in FIG. 2, in a multi-line system in which a high power WLL terminal device and a key phone are connected, a combiner 60 having a channel capacity of 4 * 10 is provided between the antenna AN1 and the lightning protector P1. This combiner 60 must compensate for the loss of the line (Combiner Loss) lost in multiple antennas, for example as much as four antenna outputs (Po = -6 dB in Figure 2) if four antennas are integrated into one antenna. That is, by doing so, the antenna output terminal can finally satisfy the rated transmit power (Po = 24dB in FIG. 2) to radiate from a single WLL terminal device. In addition, the WLL terminal apparatus has a structure associated with a key phone so that multiple radio channels can be simultaneously transmitted and received by one antenna. In addition, it is required to have excellent insulation characteristics between the outputs of the terminal devices in order to prevent the inter-channel interference that can be caused by a plurality of channels through a single combiner (60).

In addition, the multi-line key phone system 50, that is, 10 key phones are available in time to each other four telephone lines. Here, the four WLL terminal devices 10, 12, 14, and 16 have a configuration in which the output lines of the combiner 60 are assigned to four lines and have independent telephone numbers. Each of the high output terminal devices can be connected to any one of the ten key phones, and once connected, maintains the connection with a specific terminal device in an independent state.

In this view, the maximum number of available circuits that can be connected simultaneously in the multi-line system of FIG. 2 is four lines, wherein the WLL terminal devices 10, 12, 14, and 16 are all in use. In addition, a radio frequency channel uses a channel promised with a base station to transmit and receive an information signal to a wireless space.

On the other hand, it is also possible to implement a system that is extended to the four circuits illustrated in FIG. That is, in order to implement 8 lines, as shown in FIG. 3, the first keyphone central system supports more than 8 lines, and the number of the total number of terminals or shelves is 8 and the combiner consists of 1 It is preferable. Therefore, it is not necessary to install the WLL terminal apparatus and the antenna 1: 1, and to install one antenna for a plurality of terminal apparatuses.

3 is a view showing another embodiment of a multi-line system according to the present invention. In the multi-line system of FIG. 3, as in FIG. 2, the WLL terminal apparatus is connected to the multi-line, and a plurality of terminal apparatuses 10, 12, 14, 16 and one combiner 60 are packaged in one WLL multi-line. It is built in the rack 70 (Rack). According to the multi-line system of FIG. 3, an RF interface (72, 74, 76, 78) card embedded in one packaged rack is mounted on the internal board of the WLL terminal device, so that operation with only one antenna and its accessories is possible. It is possible. Here, the RF interface cards 72, 74, 76 and 78 are composed of four RF interfaces corresponding to the four terminal devices shown in FIG.

4 is a flowchart of a multi-line system according to the present invention. When the WLL terminal apparatus having the multiple lines of Fig. 4 receives an external frequency channel from the antenna (step S10), it first passes through a lightning arrestor to remove noise introduced into the frequency channel (step S20). After that, it is determined whether the noise of the lightning strikes keeps the transmission output at the rated value (step S30). If the rated transmission power is maintained, it is coupled by the combiner to satisfy the transmission power (Po = 24 dBm) to be emitted from one terminal device (step S40). If the satisfied transmission output is maintained in step S40, the WLL terminal apparatus having the same number of lines as the number of lines to be separated from the combiner can be wirelessly transmitted and received simultaneously (step S50). After a plurality of circuits are transmitted and received, the plurality of terminal devices and one combiner may be embedded in one package, which is a WLL multiline rack. In step S50, a plurality of circuits transmit and receive the radio signals, corresponding to the number of channels output from the combiner in the packaged rack (step S60).

Further, when the air interface is processed, the connection of the WLL terminal apparatus having the multiple lines is terminated by the keyphone connected to the keyphone processing apparatus transmitting a voice signal (step S70). On the other hand, if it is determined in step S30 that the rated transmission power is not maintained, the connection of the WLL terminal apparatus having multiple lines combines the transmission outputs to compensate for the signal loss of the combiner (step S80).

As another embodiment of the multi-line system according to the present invention, in the processing procedure for the flowchart of Fig. 4, after the air interface step S60, the WLL terminal apparatus and the keyphone processing apparatus are linked to distribute and control the received signal of the terminal apparatus. The other steps are substantially the same as the processing procedure of FIG. 3, and thus the detailed description thereof will be omitted.

As described above, according to the configuration of the WLL terminal apparatus having the multiple lines of the present invention and the connection method thereof, the number of lines of cables for wirelessly transmitting / receiving a plurality of lines simultaneously with the keyphone, the installation space of the antenna, the grounding of the lightning protector By reducing the facility and the terminal arrangement efficiently, it is possible to eliminate the cause of the failure and to obtain a low cost installable effect.

In addition, since a plurality of terminal devices and one combiner are built in one packaged rack, it is possible to minimize the space utilization and to reduce the demand of components and to easily implement the technology, thereby obtaining excellent economic benefits.

Embodiment of the present invention is for the purpose of illustration, those of ordinary skill in the art, modifications, changes, replacements will be possible through the technical scope illustrated in this specification.

Claims (10)

In the WLL terminal apparatus having multiple lines, An antenna for receiving an external frequency channel; A lightning protector for preventing noise of incoming lightning mixed in the signal received by the antenna; A combiner for coupling the rated transmit power to be radiated at the output of the antenna; A single WLL terminal apparatus having the same number of circuits as the number of circuits for simultaneously wirelessly transmitting and receiving multiple circuits separated from the combiner; A key phone processing device which interfaces with and controls the received signal of the WLL terminal device; And, A WLL terminal apparatus having multiple lines, characterized in that it comprises a plurality of key phones which are connected to the key phone processing device and output a voice signal. The WLL terminal apparatus of claim 1, wherein the antenna simultaneously transmits and receives a plurality of wireless channels. The WLL terminal apparatus of claim 1, wherein the combiner compensates and outputs a signal loss input from the lightning arrester. In the method of connecting a WLL terminal device having multiple lines, Receiving an external frequency channel from the plurality of antennas; Preventing noise of incoming lightning mixed in the signal received by the antenna by a plurality of lightning protectors; Coupling, by a combiner, the rated transmit power to be radiated at the output of the antenna; Simultaneously transmitting and receiving wirelessly the WLL terminal apparatus having the same number of lines as the number of lines separated from the combiner; Interfacing and controlling a received signal of the terminal device in association with the WLL terminal device and a key phone processing device; And a plurality of key phones connected to the key phone processing device for transmitting and receiving a voice signal. 5. The method of claim 4, wherein combining the transmit powers comprises compensating for signal loss of the combiner. In the WLL terminal apparatus having multiple lines, An antenna for receiving an external frequency channel; A lightning protector for preventing noise of incoming lightning mixed in the signal received by the antenna; A multi-line rack having one combiner combining the rated transmission power to be radiated from the antenna output in one package and packaged, and having a radio interface card corresponding to the number of terminal devices in the combiner in the packaged rack. ; A keyphone processing device for interfacing, controlling, and controlling a received signal of the terminal device in association with the multi-line rack; And, And a plurality of key phones connected to the key phone processing device and outputting a voice signal under the control of the processing device. 7. The WLL terminal apparatus according to claim 6, wherein the combiner compensates and outputs a signal loss input from the lightning arrester. 7. The WLL terminal apparatus according to claim 6, wherein the air interface card is composed of four pieces. In the method of connecting a WLL terminal device having multiple lines, Receiving an external frequency channel from the plurality of antennas; Preventing the noise of incoming lightning mixed in the signal received by the antenna by a plurality of lightning protectors; Coupling, by a combiner, the rated transmit power to be radiated at the output of the antenna; Wirelessly transmitting / receiving a plurality of lines simultaneously by a WLL terminal apparatus having the same number of lines separated from the combiner; Embedding the terminal device and one combiner in one package which is a WLL multiline rack; Air interface corresponding to the number of channels output from the combiner in the packaged rack; Distributing and controlling a received signal of the terminal device in association with the WLL terminal device and a key phone processing device; And a plurality of key phones connected to the key phone processing device for transmitting and receiving a voice signal. 10. The method of claim 9, wherein combining the transmit powers comprises compensating for signal loss of the combiner.