KR100352854B1 - Apparatus for separative digital terminal in W-WLL - Google Patents

Abstract

The present invention provides a separate digital terminal device of a broadband wireless subscriber network, the present invention is a power supply unit for supplying power to the outdoor unit, an RF unit for transmitting and receiving a baseband radio signal, and the RF unit Demodulates the received radio signal into a digital signal, modulates the digital signal into a radio signal, and forms a T1 / E1 signal by receiving the digitized signal from the modem and transmitting the T1 / E1 signal to the indoor unit. An outdoor unit having a unit; a power unit for supplying power to the room, and receiving a T1 / E1 signal from the outdoor unit to make a digital signal, and receiving a voice signal of a general telephone subscriber or a data signal of a PC user input through a user interface unit; The T1 / E1 forming unit converting the signal / E1 signal to the outdoor unit and receiving the digitized signal from the T1 / E1 forming unit. It includes an indoor unit having a user interface unit for transmitting a voice signal to the painter or a data signal to a PC user, and is separated from the user interface block and other blocks, and then digitized to send and receive signals to be externally affected. Long distance transmission is possible, and transmission line price can be reduced.

Description

Apparatus for separative digital terminal in W-WLL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital terminal device of a broadband wireless local loop (Wideband Wireless Local Area Network). In particular, the user interface block and other blocks are digitized and the signals transmitted and received are digitized without being influenced by an external device. The present invention relates to a separate digital terminal device of a broadband wireless subscriber network that is capable of transmission and is suitable to reduce transmission line prices.

1 is a block diagram of a digital terminal device 1 of a conventional broadband wireless subscriber network.

As shown therein, a power supply unit 2 for supplying power to the terminal device 1 of the broadband wireless subscriber network; An RF unit 3 for transmitting / receiving an RF signal of a 2.3G band; A modem section (4) for demodulating the WLL Code Division Multiple Access (CDMA) signal received by the RF section (3) into a digital signal and modulating the digital signal into a CDMA signal; A user interface unit 5 for connecting a signal digitized by the modem 4 to a telephone subscriber or a data subscriber; It is composed of a control unit 6 for controlling the operation of the terminal device (1).

The operation of the conventional apparatus configured as described above will be described in detail with reference to the accompanying drawings.

First, a 2.3 GHz radio signal is received from the RF unit 3 to perform quadrature phase shift keying (QPSK) demodulation to generate I / Q (In-Phase / Quadrature Phase) of the baseband signal, and then Through section 4, the CDMA signal is converted into a digital signal of 2M speed.

The signal converted into a digital signal is converted into a voice signal of a general telephone subscriber in the user interface unit 5 or input to perform a data service to a PC user.

In the reverse process, the voice signal or data signal received by the user interface unit 5 is converted into a digital signal of 2M Rate, which is converted into a CDMA signal by the modem unit 4 and then the RF unit 3 ) Is converted into a 2.3GHz wireless signal and transmitted.

The control unit 6 controls both the RF unit 3, the modem unit 4, and the user interface unit 5.

However, the operation of the W-WLL terminal apparatus according to the prior art operates normally in a good radio wave environment, but if the radio wave environment is poor, the operation of the W-WLL terminal device may occur.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to digitize a signal transmitted and received after separating a user interface block and other blocks, thereby enabling long-distance transmission without external influence. In addition, the present invention provides a separate digital terminal device of a broadband wireless subscriber network that can reduce transmission line prices.

In order to achieve the above object, a separate digital terminal device of a broadband wireless subscriber network according to the present invention,

A power supply unit for supplying power to the outdoor unit, an RF unit for transmitting and receiving a baseband radio signal, and a modem for demodulating the radio signal received from the RF unit into a digital signal and modulating the digital signal into a radio signal. And an outdoor unit having a T1 / E1 forming unit for receiving a signal digitized by the modem and forming a T1 / E1 signal and transmitting the T1 / E1 signal to the indoor unit; a power unit for supplying power to the indoor unit, and a T1 / E1 signal from the outdoor unit. A T1 / E1 forming unit for converting a digital signal of a general telephone subscriber or a PC user's data signal inputted through a user interface unit into a T1 / E1 signal and transmitting the digital signal to the outdoor unit; User interface for receiving voice signal to digital subscriber and transmitting data signal to PC user Including an indoor unit having to be made of the feature of the configuration.

1 is a block diagram of a digital terminal device of a conventional broadband wireless subscriber network;

2 is a block diagram of a separate digital terminal device of a broadband wireless subscriber network according to an embodiment of the present invention;

3 is a detailed block diagram of a T1 / E1 forming unit in the outdoor unit in FIG. 2;

4 is a detailed block diagram of a T1 / E1 forming unit in the indoor unit of FIG.

Explanation of symbols on the main parts of the drawings

10: outdoor unit 20: indoor unit

11, 21: power supply unit 12: RF unit

13: modem portion 14, 22: T1 / E1 forming portion

15: control unit 16: user interface unit

Hereinafter, an embodiment according to the technical spirit of the detachable digital terminal device of the present invention, the broadband wireless subscriber network as described above is as follows.

Figure 2 is a block diagram of a separate digital terminal device of a broadband wireless subscriber network according to an embodiment of the present invention.

As shown in the drawing, QPSK demodulation is performed to generate a baseband signal, an I / Q signal, a digital signal, and then converted into a T1 / E1 signal, which is transmitted to the indoor unit 20, and the indoor unit 20. An outdoor unit 10 converting the T1 / E1 signal transmitted from the digital signal into a digital signal and then converting the T1 / E1 signal into a wireless signal; The outdoor unit 10 receives the T1 / E1 signal and converts it into a digital signal to transmit a voice signal to a general telephone subscriber or to perform a data service to a PC user, and conversely, a voice signal of a general telephone subscriber or data of a PC user. The indoor unit 20 receives a signal and converts it into a T1 / E1 signal and then transmits the signal to the outdoor unit 10.

The outdoor unit 10 includes a power supply unit 11 for supplying power to the outdoor unit 10; An RF unit 12 for transmitting / receiving a radio signal in a 2.3G band; A modem unit 13 for demodulating the WLL CDMA signal received by the RF unit 12 into a digital signal and modulating the digital signal into a CDMA signal; A T1 / E1 forming unit 14 receiving the digitized signal from the modem 13 to form a T1 / E1 signal and transmitting the signal to the indoor unit 20; The controller 15 is configured to control the operation of the outdoor unit 10.

In the control unit 15, the control signal for the indoor unit 20 is transmitted to the T1 / E1 forming unit 22 in the indoor unit 20 through the T1 / E1 forming unit 14, the indoor unit The control unit 15 extracts the control signal from the T1 / E1 forming unit 22 in the control unit 20 to control the indoor unit 20.

The indoor unit 20, the power unit 21 for supplying power to the indoor unit 20; The outdoor unit 10 receives the T1 / E1 signal into a digital signal, converts the voice signal of the general telephone subscriber or the PC user's data signal input through the user interface unit 23 into a T1 / E1 signal, thereby converting the outdoor unit into a digital signal. A T1 / E1 forming portion 22 for transmitting to (10); The user interface unit 23 receives the digitized signal from the T1 / E1 forming unit 22 and transmits a voice signal to a general telephone subscriber or a data signal to a PC user.

FIG. 3 is a detailed block diagram of the T1 / E1 forming unit 14 of the outdoor unit in FIG. 2.

As shown therein, a surge protection unit 31 which receives a signal transmitted from the indoor unit 20 and protects a surge of a circuit; A transformer 32 for separating power and data input from the surge protection part 31 and supplying power to the power supply part 11; T1 / which digitizes the data signal transmitted from the indoor unit 20 through the transformer 32 and generates an analog T1 / E1 signal from the data input from the T1 / E1 framer 34 and transmits it to the transformer 32. An E1 line interface unit 33; The T1 / E1 framer 34 extracting pure data from the digitized data by the T1 / E1 line interface unit 33 and forming a T1 / E1 frame from data received from a field programmable gate array (FPGA) 35. Wow; The FPGA 35 processes the pure data extracted from the T1 / E1 framer 34 and transmits the data to the modem unit 13 and converts the data received from the modem unit 13 into a form suitable for the T1 / E1 framer. It is composed of

4 is a detailed block diagram of the T1 / E1 forming portion 22 of the indoor unit in FIG. 2.

As shown therein, a surge protection unit 41 receives the signal transmitted from the outdoor unit 10 and protects the surge of the circuit; A transformer 42 for transmitting the power supplied from the power supply unit 21 with the data from the surge protection unit 41; Digitize the data signal transmitted from the outdoor unit 10 through the surge protection unit 41, and generates an analog T1 / E1 signal from the data input from the T1 / E1 framer 44 and transmits it to the transformer 42. A T1 / E1 line interface section 43; The T1 / E1 framer 44 extracts pure data from the digitized data by the T1 / E1 line interface unit 43 and forms a T1 / E1 frame from data received from a field programmable gate array (FPGA) 45. Wow; FPGA which processes the pure data extracted from the T1 / E1 framer 44 and transmits the data to the user interface unit 23 and converts the data received by the user interface unit 23 into a form suitable for the T1 / E1 framer. It consists of 45.

The operation of the separate digital terminal device of the broadband wireless subscriber network according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, the present invention configures a digital terminal device of a conventional broadband wireless subscriber network in a separate type of an outdoor unit and an indoor unit.

Therefore, the outdoor unit 10 includes the power supply unit 11, the RF unit 12, the modem unit 13, the T1 / E1 forming unit 14, and the control unit 15, and the indoor unit 20 includes the power unit 21, It consists of the T1 / E1 forming part 22 and the user interface part 23.

Therefore, the outdoor unit 10 includes a T1 / E1 forming unit 14 for communicating with the indoor unit 20, and the T1 / E1 forming unit for communicating with the outdoor unit 10 in the indoor unit 20. And a user interface unit 23 for connecting the signal digitized by the T1 / E1 forming unit to the telephone subscriber or the data subscriber.

Thus, the power supply from the indoor unit 20 to the outdoor unit 10 sends the power generated by the power supply unit 21 of the indoor unit 20 to the T1 / E1 forming unit 22, where the outdoor unit 10 with the T1 / E1 signal. To supply. In the outdoor unit 10, the T1 / E1 forming unit 14 separates the T1 / E1 signal from the power supply, and the power is sent to the power supply unit 15, and the T1 / E1 signal is sent to the modem unit 13.

Looking at the signal transmission operation from the outdoor unit 10 to the indoor unit 20 as follows.

The RF unit 12 receives a 2.3 GHz radio signal and performs QPSK demodulation to generate an I / Q signal of the baseband signal. The CDMA signal, which has passed through the modem unit 13, is converted into a 2M rate digital signal. This is converted into a T1 / E1 signal that can be sent from the T1 / E1 forming unit 14 to the indoor unit 10 and transmitted to the indoor unit 20.

That is, the T1 / E1 forming unit 14 receives data received from the modem unit 13 from the FPGA 35 and transmits contents to be transmitted from the FPGA 35 to the indoor unit 20 by the T1 / E1 framer 24. To a T1 / E1 framer 34. The T1 / E1 framer 34 creates and transmits a T1 / E1 frame to the T1 / E1 line interface unit 33, and the T1 / E1 line interface unit 33 creates and transmits an analog T1 / E1 signal to the transformer 32. Then, it is transmitted to the indoor unit 20 through the surge protection unit 31.

In the indoor unit 20, the T1 / E1 signal transmitted from the T1 / E1 forming unit 14 of the outdoor unit 20 is converted into a digital signal and sent to the user interface unit 23, and converted into a voice signal of a general telephone subscriber or a PC. Enable users to provide data services.

Here, the T1 / E1 forming unit 22 of the indoor unit 20 transmits the data received from the T1 / E1 forming unit 14 of the outdoor unit 10 by the surge protection unit 41 to the transformer 42. The data signal of the transformer 42 is digitized by the T1 / E1 line interface unit 43, extracts pure data from the T1 / E1 framer 44, passes it to the FPGA 45, and processes the data by the FPGA 45. To the user interface unit 23.

Meanwhile, the signal transmission operation from the indoor unit 20 to the outdoor unit 10 is as follows.

The voice signal or data signal received by the user interface unit 23 of the indoor unit 20 is converted into a digital signal of 2M rate, which is transmitted by the T1 / E1 forming unit 22 to the T1 / E1 forming unit 22 for transmission to the outdoor unit 10. Converted to E1 signal.

That is, in the T1 / E1 forming unit 22 of the indoor unit 20, the FPGA 45 may transfer contents to be transmitted to the outdoor unit 10 from the data received by the user interface unit 23 to the T1 / E1 framer 44. Form and deliver to T1 / E1 framer 44. The T1 / E1 framer 44 creates and transmits a T1 / E1 frame to the T1 / E1 line interface unit 43, and the T1 / E1 line interface unit 43 creates and transmits an analog T1 / E1 signal to the transformer 32. do. Power received from the power supply unit 21 is transmitted to the transformer 42, the transformer 32 transmits the power supplied from the power supply unit 21 with the data to the surge protection unit 41, to transmit to the outdoor unit 10. do.

Then, the T1 / E1 forming unit 14 of the outdoor unit 10 receives data and power transmitted from the indoor unit 20 through the surge protection unit 31. The transformer 32 separates the power supply and the data of the surge protection unit 31, transmits the power supply to the power supply unit 15, and sends the data signal to the T1 / E1 line interface unit 33. The T1 / E1 line interface unit 33 digitizes the data transmitted from the transformer 32, extracts pure data from the digitized data from the T1 / E1 framer 34, and transfers the pure data to the FPGA 35, and the FPGA 35. ) Processes the data and transfers the data to the modem unit 13.

In the outdoor unit 10, the T1 / E1 signal transmitted from the indoor unit 20 is converted into a digital signal by the T1 / E1 forming unit 14, and the digital signal is converted into a CDMA signal by the modem unit 13. The unit 12 converts the radio signal to 2/3 GHz and transmits it.

The indoor unit control by the controller 10 in the outdoor unit transmits the indoor unit control signal to the T1 / E1 forming unit 14 of the outdoor unit 10, which is transmitted to the indoor unit 20, and the T1 / of the indoor unit 20. The indoor unit 20 is controlled by extracting a control signal from the E1 forming unit 22.

As described above, the present invention enables the long-distance transmission without the external influence by digitizing signals transmitted and received after separating the user interface block and the other blocks.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the separate digital terminal device of the broadband wireless subscriber network according to the present invention is an outdoor constant distance having good outdoor radio wave environment when the present invention is used in the conventional configuration that cannot be used indoors where the radio wave environment is poor. Since it can be installed anywhere in the range (for example, 200M), it can receive a stable radio wave and can transmit long distances without being influenced by the outside, and the cost of the transmission line can be reduced.

Claims (6)

A power supply unit for supplying power to the outdoor unit, an RF unit for transmitting and receiving a baseband radio signal, and a modem for demodulating the radio signal received from the RF unit into a digital signal and modulating the digital signal into a radio signal. An outdoor unit having a T1 / E1 forming unit for receiving a signal digitized by the modem and forming a T1 / E1 signal and transmitting the signal to the indoor unit; A power supply unit for supplying power to the indoor unit, and receives the T1 / E1 signal from the outdoor unit into a digital signal, converts the voice signal of the general telephone subscriber or the data signal of the PC user to the T1 / E1 signal through the user interface unit An indoor unit having a T1 / E1 forming unit for transmitting to the outdoor unit and a user interface unit for receiving a digitized signal from the T1 / E1 forming unit and transmitting a voice signal to a general telephone subscriber or a data signal to a PC user. Including, The digital terminal device of the broadband wireless subscriber network, characterized in that for transmitting the data through the T1 / E1 link in the outdoor unit and the indoor period. delete According to claim 1, The outdoor unit, A control unit configured to control the indoor unit by extracting a control signal of the control unit from the T1 / E1 forming unit in the indoor unit by transmitting the control signal for the indoor unit to the T1 / E1 forming unit in the indoor unit through the T1 / E1 forming unit; Separating digital terminal device of the broadband wireless subscriber network further comprising. According to claim 1, T1 / E1 forming portion of the outdoor unit, A surge protection unit which receives a signal transmitted from the indoor unit and protects a surge of a circuit; A transformer for separating power from data input from the surge protection unit and supplying power to the power supply unit; A T1 / E1 line interface unit for digitizing the data signal transmitted from the indoor unit through the transformer and generating an analog T1 / E1 signal from the data input from the T1 / E1 framer to the transformer; A T1 / E1 framer extracting pure data from the digitized data in the T1 / E1 line interface unit and forming a T1 / E1 frame from data received from the FPGA; A separate type of broadband wireless subscriber network comprising an FPGA that processes pure data extracted from the T1 / E1 framer and transmits the data to the modem unit and converts the data received from the modem unit into a form suitable for the T1 / E1 framer. Digital terminal device. delete According to claim 1, T1 / E1 forming portion of the indoor unit, A surge protection unit which receives a signal transmitted from the outdoor unit and protects a surge of a circuit; A transformer for transmitting the power supplied from the power supply unit with data from the surge protection unit; A T1 / E1 line interface unit for digitizing the data signal transmitted from the outdoor unit through the surge protection unit and making an analog T1 / E1 signal from the data input from the T1 / E1 framer to the transformer; A T1 / E1 framer extracting pure data from the digitized data in the T1 / E1 line interface unit and forming a T1 / E1 frame from data received from the FPGA; Broadband wireless subscriber network, characterized in that the FPGA to process the pure data extracted from the T1 / E1 framer to transmit to the user interface unit, and to form the data received from the user interface unit suitable for the T1 / E1 framer Detachable digital terminal device.