KR100581733B1 - Device for Extracting Control Signal Switching Foward and Reverse Direction of Portable Internet Radio Replay System by Using Terminal - Google Patents

Abstract

The present invention relates to an apparatus for extracting forward and reverse switching control signals of a portable Internet wireless repeater using a terminal, and more particularly, comprising: a first antenna for receiving a signal output from a base station and transmitting a mobile station signal to the base station; A first switch for selecting any one of a forward signal received through the first antenna and a reverse signal transmitted through the third switch; A second switch for selecting any one of a forward signal selected by the first switch and a reverse signal transmitted through the fourth switch; A filter and an amplifier for filtering and amplifying forward and reverse signals and performing gain adjustment; A third switch for selecting whether to forward or backward; A fourth switch for selecting any one of a forward signal and a reverse signal transmitted through the third switch; A second antenna for transmitting a base station signal to a mobile station or receiving a signal output from the mobile station; A terminal for extracting forward and reverse time from signals received and transmitted through the first antenna; Consists of a control unit that controls the on / off of the first to fourth switches in response to the signal extracted from the terminal, so that the call quality can be improved at low cost without installing expensive base station equipment in the indoor space and shadow area It is.

Portable Internet, Wireless Repeater, Terminal, Call Quality, TDD

Description

Device for Extracting Control Signal Switching Foward and Reverse Direction of Portable Internet Radio Replay System by Using Terminal}             

1 is a block diagram showing the configuration of a wireless repeater of the FDD method.

2 is a block diagram of an apparatus of the present invention.

(A)-(d) is an operation waveform diagram of each part of the apparatus of this invention.

Explanation of symbols on the main parts of the drawings

200, 206 ..... 1st and 2nd antenna

201,202,204,205 ... 1st-4th switch

203 ... Aftermath and Amplifiers

207 ... terminal

208 ... control unit

The present invention relates to a portable Internet wireless repeater of a TDD (Time Division Duplex) method, and more particularly, to control forward and reverse switching of a portable Internet wireless repeater using a terminal to extract and control forward / reverse time using a terminal. It relates to a signal extraction device.

In general, a TDD type portable Internet wireless repeater having a method of dividing and combining transmitter time and receiver time using one frequency as one of a duplex method for connecting an antenna and a transmitter or a receiver may not receive a signal from a base station well. It is installed in the shadow area to improve the call quality.

That is, the TDD portable Internet wireless repeater according to the present invention is installed in a place where the signal output from the base station is weak and amplifies the weak signal as described above and outputs it to the mobile station so as to provide a higher quality mobile communication service. Says a wireless repeater.

1 is a block diagram showing a configuration of a wireless repeater of a frequency division duplex (FDD) method for simultaneously transmitting / receiving by designating a transmitter and a receiver as different frequencies as one of a duplex method for connecting an antenna and a transmitter or a receiver to be.

The wireless repeater of the FDD scheme as shown in FIG. 1 includes a first antenna 100 for receiving a signal output from the base station and transmitting a mobile station signal output from the first frequency separator 101 to the base station; A first frequency separator (101) for separating forward signals among the signals received from the first antenna (100), removing unwanted waves from the output signal of the filter and the amplifier (104), and separating only reverse signals; A filter and an amplifier (102) for filtering, amplifying and gain adjustment of the signal separated by the first frequency separator (101); A second frequency separator (103) for removing the unwanted wave in the filter and the output signal of the amplifier (102) and separating it into a forward signal, and separating a reverse signal among the signals received from the second antenna (104); A second antenna (104) for transmitting a signal output from the second frequency separator to a mobile station and receiving a signal output from the mobile station; It consists of a filter and an amplifier unit 105 for filtering and amplifying the reverse signal separated by the two frequency separator and performing gain adjustment.

Looking at the operation of the forward link in a conventional FDD wireless repeater having such a configuration, the forward signal transmitted from the base station is received by the first antenna 100 and then separated by the forward signal in the first frequency separator 101 And filtering / amplifying / gain adjusting to a predetermined band in the filter and the amplifier as the filter is transmitted to the second frequency separator 103 as it is transmitted to the amplifier 102 to remove the unwanted wave from the second frequency separator 103 and forward signal. After the separation, only the second antenna 104 is sent to the mobile station.

Next, referring to the operation of the reverse link, the reverse signal transmitted from the mobile station is received through the second antenna 104, and then only the reverse signal is separated from the second frequency separator 103 and transmitted to the filter and the amplifier 104. Since the filtering and amplification / gain adjustment are performed to the first frequency separator 101 by the filter and the amplifier 104 by the predetermined band, the first frequency separator 100 is separated into a reverse signal and then the first antenna 100 is separated. To the base station.

However, since the FDD type wireless repeater is different from the forward frequency and the reverse frequency, it can operate without interference in the frequency separator, but it is a duplex method for connecting an antenna and a transmitter or a receiver. Since the TDD scheme having a method of dividing and combining the TDD schemes uses time in the forward and reverse directions at the same frequency, the TDD scheme has a problem in that oscillation occurs due to mutual interference of the forward and reverse signals when configured as a general FDD repeater.

The present invention has been made to solve such a conventional problem, it is expensive to the indoor space and the shadow area through the method of controlling the switches through the control unit by detecting the forward / reverse time controlled by the base station using the terminal It is an object of the present invention to provide a forward and reverse switching control signal extraction apparatus of a portable Internet wireless repeater using a terminal which can improve call quality at low cost without installing base station equipment.

The above-described object of the present invention includes: a first antenna for receiving a signal output from a base station and transmitting a mobile station signal of a reverse direction selected through a first switch to a base station; A first switch for selecting any one of a forward signal received through the first antenna and a reverse signal transmitted through a third switch; A second switch for selecting one of a forward signal selected by the first switch and a reverse signal transmitted through a fourth switch; A filter and an amplifier for filtering and amplifying the forward and reverse signals selected by the second switch and performing gain adjustment; A third switch for selecting whether to forward or filter the output signal of the filter and the amplifier; A fourth switch for selecting any one of a forward signal and a reverse signal transmitted through the third switch; A second antenna for transmitting a base station signal transmitted through the fourth switch to a mobile station or receiving a signal output from the mobile station; A terminal for extracting forward and reverse time from the signals received and transmitted through the first antenna and transmitting the extracted forward and reverse times to the controller; It can be achieved by configuring a control unit for switching the forward and reverse signals to be transmitted through a method of controlling the on / off of the first to fourth switches in response to the signal extracted by the terminal.

In the present invention, it is possible to switch the TDD-type portable Internet wireless repeater using forward / reverse time detected through the terminal, so that the repeater can be operated without interference between directions. It is possible to improve call quality at low cost without installing equipment.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention according to the spirit as described above in more detail.

Fig. 2 shows a block diagram of the device of the present invention, and Figs. 3 (a)-(d) show the operation waveform diagrams of the parts of the device of the present invention.

2, the forward and reverse switching control signal extraction apparatus of the portable Internet wireless repeater using the terminal of the present invention
A first antenna (200) for receiving a signal output from the base station and transmitting a mobile station signal of a reverse direction selected through the first switch 201 to the base station;
And a second antenna 206 for transmitting a base station signal transmitted through the fourth switch 205 to the mobile station or receiving a signal output from the mobile station.
Any one of the forward signal selected by the first switch 201 and the reverse signal transmitted through the fourth switch 205 at both ends of the filter and amplifier 203 for filtering and amplifying the forward and reverse signals and performing gain adjustment. Connect a second switch 202 for selecting and a third switch 204 for selecting whether to send the output signal of the filter and the amplifier 203 in a forward or reverse direction,
Extract the forward and backward times from the signals received and transmitted to the first antenna 206 through the terminal 207 connected to the first antenna 200 to transmit to the control unit 208,
The first to fourth switches 201, 202, 204 and 205 are turned on and off in response to the time of the forward and reverse signals extracted through the control unit 208 connected to the terminal 207. And reverse signals are transmitted without interfering with each other.

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Referring to the operation and effect of the device of the present invention configured as described above are as follows.

First, referring to the operation of the forward link of the TDD-type portable Internet wireless repeater to which the present invention is applied, the forward signal transmitted from the base station is received by the first antenna 200 and then transmitted to the first switch 201, and the first switch. The forward input signal selected by 201 is transmitted to the second switch 202.

The forward signal selected by the second switch 202 is transmitted to the filter and amplifier unit 203 and is transmitted to the third switch 204 after the filtering / amplification / gain is adjusted to a predetermined band. The forward signal is selected by the third switch 204 under control and transferred to the fourth switch 205.

Therefore, the signal selected by the fourth switch 205 under the control of the controller 208 is transmitted to the mobile station through the second antenna 206.

At this time, the time of the forward and reverse signals as shown in (a) and (b) of FIG. 3 received and transmitted through the first antenna 200 is detected by the terminal 207 in the form as shown in (c) of FIG. Since the control unit 208 is sent to the control unit 208, the control unit 208 processes the extracted transfer time and transmits a control signal as shown in (d) of FIG. 3 to the first to fourth switches 201, 202, 204 and 205. By switching each switch 201 (202) 203 (204) in a batch, the reverse signal in the forward direction does not cause interference.

Next, referring to the operation of the reverse link, the reverse signal transmitted from the mobile station is received through the second antenna 206 and transmitted to the fourth switch 205, so that the fourth switch 204 under the control of the controller 208 is controlled. Selects a reverse signal and transmits the reverse signal to the second switch 202.

Therefore, since the second switch 202 under the control of the controller 208 selects a reverse signal and transmits the reverse signal to the filter and the amplifier 203, the filter and amplifies the reverse signal to a predetermined band in the filter and the amplifier 203. It is delivered to the third switch 204 after the gain adjustment, and is transmitted from the third switch 204 under the control of the controller 208 to the first switch 201, so that the base station is controlled by the base station 208. The first switch 201 selected in the direction (ie, switched) transmits a reverse signal to the base station through the first antenna 200.

As described above, the present invention extracts the forward signal transmission time of the base station and the reverse signal transmission time of the mobile station detected by the control unit 208 through the terminal 207, and generates switching switching signals corresponding to the switches. Interference between data transmitted and received between the base station and the mobile station can be avoided, thereby preventing data loss.

As described above, according to the present invention, since the switches of the TDD-type portable Internet wireless repeater can be switched using forward / reverse time detected through the terminal, the repeater can be operated without interference between directions, thereby allowing indoor spaces and shadows. It is possible to improve call quality at low cost without installing expensive base station equipment in the area.

Claims (1)

A first antenna (200) for receiving a signal output from the base station and transmitting a mobile station signal of a reverse direction selected through the first switch 201 to the base station; And a second antenna 206 for transmitting a base station signal transmitted through the fourth switch 205 to the mobile station or receiving a signal output from the mobile station. Any one of the forward signal selected by the first switch 201 and the reverse signal transmitted through the fourth switch 205 at both ends of the filter and amplifier 203 for filtering and amplifying the forward and reverse signals and performing gain adjustment. Connect a second switch 202 for selecting and a third switch 204 for selecting whether to send the output signal of the filter and the amplifier 203 in a forward or reverse direction, Extract the forward and backward times from the signals received and transmitted to the first antenna 206 through the terminal 207 connected to the first antenna 200 to transmit to the control unit 208, The first to fourth switches 201, 202, 204 and 205 are turned on and off in response to the time of the forward and reverse signals extracted through the control unit 208 connected to the terminal 207. And forward and reverse switching control signal extraction apparatuses of a portable internet wireless repeater using a terminal, wherein the reverse signals are transmitted without interfering with each other.

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