KR101094496B1 - Integrated Radio Repeater - Google Patents

Abstract

The present invention relates to an integrated wireless relay device, comprising: receiving a first duplexer and a forward first and second signal for separating the first and second antennas and the signals received by the first antenna into forward first and second signals. A first triple combiner for filtering, a forward repeater module for removing and amplifying noise of a signal output from the first triple combiner, a second triple combiner for filtering a signal output from the forward repeater module, and outputting the output signal of the second triple combiner A second duplexer which outputs through a second antenna and separates a signal received by a second antenna into a reverse first and a second signal, a first low frequency filtering unit receiving a reverse first signal through a second triple combiner, and a second A first bandpass filtering unit for receiving and filtering a second reverse signal separated by the duplexer through a second switching unit, and a first low frequency filtering unit and a bandpass unit A reverse relay module for removing and amplifying noise of each signal output from the terminating unit, a second low frequency filtering unit for receiving and outputting a reverse first signal from the reverse relay module, and receiving and outputting a reverse second signal from the reverse relay module It is configured to include a second bandpass filtering unit, it is possible to miniaturize the integrated repeater, and to eliminate the interference between the components.

Integrated Repeater, WCDMA, WiBro

Description

Integrated Radio Repeater

1 is an exemplary diagram of a general integrated wireless relay device;

2 is a structural diagram of an integrated wireless relay device according to the present invention.

Description of the Related Art [0002]

210: 212: antenna 220, 222: duplexer

230, 232: triple combiner 240: forward relay module

242 forward low noise amplifier 244 forward passband filter

246: forward power amplifier 250, 252: switching unit

260, 264: band pass filtering unit 262, 266: low frequency filtering unit

270 reverse relay module 272 reverse low noise amplifier

274 reverse passband filter 276 reverse power amplifier

The present invention relates to a wireless relay device, and more particularly, to a wireless relay device incorporating a wireless relay device used for improving call quality in a mobile communication system using different communication methods.

In general, mobile communication systems aim to provide quality services to subscribers regardless of location. To this end, wireless relay devices are installed in areas with poor mobile communication service quality. The wireless relay device is an extension of the base station's wireless transmission / reception portion. It is a device that can provide a very effective mobile communication service at low cost in the radio shadow area such as the building and the basement. It is used.

The wireless relay device amplifies the forward signal transmitted from the mobile communication system side and relays it to the mobile communication terminal side, and amplifies the reverse signal transmitted from the mobile communication terminal side and relays the reverse signal to the mobile communication system side.

The wireless relay device is configured to relay each frequency band according to the communication method of the mobile communication system, and thus has a structure that cannot accept signals of other communication methods. However, the mobile communication network is not limited to the CDMA method, and it is expected that the mobile communication network using the WiBro method, the WCDMA method, etc. will coexist in the future, and implement a repeater for each mobile communication system using each communication method. If installed, there are problems such as an increase in network construction costs.

Therefore, recently, an integrated wireless relay apparatus for transmitting and receiving wireless signals for a mobile communication system using different communication methods has been developed, and the configuration thereof is shown in FIG. 1.

FIG. 1 is an exemplary diagram of a general integrated wireless relay device. For example, FIG. 1 illustrates a wireless relay device for integrated relaying of signals for a WCDMA system and a WiBro system.

Referring to the configuration of the integrated wireless relay device shown in FIG. First, in order to relay a forward WCDMA signal, the integrated wireless relay device separates a signal received through the first antenna 102 and the first antenna 102 according to each frequency band from the mobile communication system. Noise is removed from the signal output from the first high frequency filter 106 and the first high frequency filter 106 that receive and filter the WCDMA signal among the signals separated by the first duplexer 104 and the first duplexer 104. A first forward passband filter 110, a first forward passband filter 110 for filtering a signal corresponding to a frequency of use from an output signal of the first forward low noise amplifier 108 The first forward power amplifier 112 for amplifying the signal output from the 110, the second high frequency filter 114 for filtering the output signal of the first forward power amplifier 112, the input signal A second duplexer 116 for checking and outputting a WCDMA signal or a WiBro signal, and a second antenna 118 for transmitting an output signal of the second duplexer 116 to a mobile communication terminal.

Next, in order to relay the forward WiBro signal, the integrated wireless relay device includes a switching unit (130, 138). Since the WiBro method is a time division method, the switching units 130 and 138 connect to the forward side or the reverse side when the WiBro signal is received so that the WiBro signal is amplified and output. That is, when the WiBro signal is received as a result of separating the signal from the first duplexer 104, the switching unit 130 is connected to the forward side so that the WiBro signal is transmitted to the second forward low noise amplifier 132 so that the noise from the received signal is reduced. To be removed. The second forward passband filter 134 filters the signal corresponding to the frequency of use from the output signal of the second forward low noise amplifier 132, and the second forward power amplifier 136 receives the second forward passband filter 134. Amplify the output signal. In addition, the amplified signal is transmitted to the second duplexer 116 through the switching unit 138, and then transmitted to the mobile communication terminal side through the second antenna 118.

The reverse WCDMA signal is received through the second antenna 118 and then separated from the second duplexer 116, and the first low frequency filtering unit 120, the first reverse low noise amplifier 122, and the first reverse passband filter ( 124, the first reverse power amplifier 126, the second low frequency filter filter 128, and the first duplexer 104 are transmitted to the WCDMA mobile communication system through the first antenna 102.

In addition, the reverse WiBro signal is received through the second antenna 118 and then separated from the second duplexer 116, the second switching unit 138, the second reverse low noise amplifier 140, and the second reverse passband filter. 142, the second reverse power amplifier 144, the first switching unit 138, and the first duplexer 104 are transmitted to the WiBro mobile communication system through the first antenna 102.

As such, the WCDMA and WIBW wireless relay system is characterized by a low noise amplifier, a passband filter and a power to avoid the interference between the WCDMA system using the frequency division scheme and the WiBro system using the time division scheme and the interference between the active elements. Since the amplifiers are implemented independently, the relay device cannot be miniaturized and the manufacturing cost increases. In addition, since the relay device can not be miniaturized, it is difficult to install the relay device.

The present invention has been made to solve the above problems and disadvantages, there is a technical problem to be able to miniaturize the integrated wireless relay device for a mobile communication system using a different communication method.

In addition, the present invention has a technical problem to provide an integrated wireless relay device that can eliminate the interference between the elements while miniaturizing the integrated wireless relay device.

Integrated wireless relay device of the present invention for achieving the above technical problem is a first and second antenna for transmitting and receiving a signal wirelessly; A first duplexer for separating the signal received by the first antenna into forward first and second signals according to a frequency band; When the signal separated from the first duplexer is a forward first signal, a forward first signal is received to filter the forward first signal into a high frequency signal, and when the signal separated from the first duplexer is a forward second signal, A first triple combiner for receiving a second signal through a first switching unit controlled by a first duplexer and filtering the forward second signal into a band pass signal; A forward relay module for removing noise from each signal output from the first triple combiner and selecting and amplifying only necessary signals; A second triple combiner for filtering according to a frequency of a signal output from the forward relay module; A second duplexer which outputs an output signal of the second triple combiner through the second antenna and separates the signal received by the second antenna into reverse first and second signals according to a frequency band; A first low frequency filtering unit configured to receive and filter the reverse first signal through the second triple combiner when the signal separated by the second duplexer is a reverse first signal; A first bandpass filtering unit configured to receive and filter a second signal through a second switching unit controlled by the second duplexer when the signal separated by the second duplexer is a reverse second signal; A reverse relay module for removing noise from each signal output from the first low frequency filtering unit and the first band pass filtering unit, and selecting and amplifying only a necessary signal; A second low frequency filtering unit receiving a reverse first signal from the reverse relay module and outputting the reverse first signal through the first triple combiner, the first duplexer, and the first antenna; And a second bandpass filtering unit configured to receive a reverse second signal from the reverse relay module and to output the reverse second signal through the first duplexer and the antenna through the first switching unit.

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

2 is a configuration diagram of an integrated wireless relay apparatus according to the present invention, for example, integrating signals for a mobile communication system (WCDMA system) using a frequency division method and a mobile communication system (WiBro system) using a time division method. A wireless relay device capable of relaying is shown.

As shown, the wireless relay device according to the present invention includes a first antenna 210, a first duplexer 220, a first triple combiner 230, a forward relay module 240, a second triple combiner 232, Second duplexer 222, second antenna 212, first switching unit 250, first bandpass / low frequency filtering unit 260, 262, reverse relay module 270, second bandpass / low frequency filtering A portion 264, 266 and the second switching unit 252.

Here, forward relay module 240 includes forward low noise amplifier 242, forward passband filter 244, and forward power amplifier 246, and reverse relay module 270 includes reverse low noise amplifier 272, reverse direction. Passband filter 274 and reverse power amplifier 276.

Referring to the operation of the integrated wireless relay device shown in Figure 2 according to the type of the received signal as follows.

First, the forward WCDMA signal is received by the first antenna 210, it is confirmed that the WCDMA signal in the first duplexer 220, and is thus transmitted to the first triple combiner 230. The first triple combiner 230 is a filter in which a high frequency / low frequency / band pass filter is integrated and has a function of selecting and outputting only a signal corresponding to a required frequency from a received signal. Accordingly, the forward WCDMA signal is separated by only the high frequency signal by the triple combiner 230 and transmitted to the forward relay module 240.

The forward relay module 240 removes noise from the received signal and amplifies only necessary signals. First, the forward relay module 240 removes the noise from the forward low noise amplifier 242, and only the signal corresponding to the frequency used by the forward passband filter 244. After filtering, the amplifier is amplified to a desired size in the forward power amplifier 246. Thereafter, the signal output from the forward relay module 240 is radiated to the air through the second triple combiner 232, the second duplexer 222, and the second antenna 212.

On the other hand, the reverse WCDMA signal is received by the second antenna 212, the second duplexer 222 is identified as a WCDMA signal is separated, and then transmitted to the second triple combiner 232. Since the input signal is a reverse WCDMA signal, the second triple combiner 232 filters only the low frequency signal from the input signal and transmits the low frequency signal to the first low frequency filter 262. Thereafter, the output signal of the first low frequency filtering unit 262 is transmitted to the second low frequency filtering unit 266 through the reverse relay module 270, and then the first triple combiner 230, the first duplexer 220, and the like. The first antenna 210 is transmitted to the WCDMA mobile communication system. Here, the reverse relay module 270 removes noise from the input signal and filters and amplifies only necessary signals.

Next, the forward WiBro signal is received by the first antenna 210 and then confirmed by the second duplexer 220 is a WiBro signal. Accordingly, the first switching unit 250 is connected to the first triple combiner 230 so that the forward WiBro signal is transmitted to the triple combiner 230, separated into a bandpass signal, and then transmitted to the forward relay module 240.

The forward relay module 240 removes noise from the received signal and amplifies only necessary signals. First, the forward relay module 240 removes the noise from the forward low noise amplifier 242, and only the signal corresponding to the frequency used by the forward passband filter 244. After filtering, the amplifier is amplified to a desired size in the forward power amplifier 246. Thereafter, the signal output from the forward relay module 240 is transmitted to the second triple combiner 232, and the second duplexer 222 and the second switch 252 are connected to the second triple combiner 232. 2 is radiated into the air through the antenna (212).

On the other hand, the reverse WiBro signal is received by the second antenna 212, the second duplexer 222 is identified as a WiBro signal and separated. Accordingly, the second switching unit 252 is connected to the first bandpass filtering unit 260 to transmit a signal, and the signal filtered by the first bandpass filtering unit 260 is provided through the reverse relay module 270. The two bandpass filtering unit 264 is transmitted. Subsequently, as the first switching unit 250 connects to the second bandpass filtering unit 264, the reverse WiBro signal is transmitted to the WiBro mobile communication system through the first duplexer 220 and the first antenna 210. . Here, the reverse relay module 270 removes noise from the input signal and filters and amplifies only necessary signals.

The integrated wireless relay device according to the present invention described above can implement a low noise amplifier, a passband filter, and a power amplifier in common, thereby miniaturizing the size of the wireless relay device. In addition, a triple combiner 230, 232 is introduced to convert the input signal into a forward WCDMA signal (high frequency signal), a forward WiBro signal (bandpass signal), a reverse WCDMA signal (low frequency signal), and a reverse WiBro signal (bandpass signal). Separate. In addition, when the received signal is a WiBro signal, the switching unit 250 or 252 may be connected to the triple combiner 230 or 232 or may be connected to the bandpass filtering unit 260 or 264 to forward and transmit the WiBro signal transmitted in a time division manner. Relay in the reverse direction.

Such an integrated wireless relay device may be used only for the WCDMA system, for the WiBro system, or for both the WCDMA / WiBro system, depending on the purpose of use.

In addition, when the switching unit for relaying the WiBro signal is selectively connected to the triple combiner or the bandpass filtering unit for the signal relay, impedance matching may not be performed. However, in the present invention, a triple combiner is used to relay the WCDMA signal. Each part is always in perfect impedance match. That is, when the switching unit for relaying the WiBro signal is OFF with the triple combiner, the impedance is changed. Since the Triple Repeater can filter only the high frequency signal or the low frequency signal independently of the filtering function of the WiBro signal, It is possible to maintain a state where the impedance is matched, thereby eliminating the influence of interference between devices.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

According to the present invention, in the integrated configuration of a wireless relay device for a mobile communication system using a different communication method, there is an advantage that the size of the relay device can be miniaturized and the installation thereof can be facilitated. In addition, it is possible to reduce the unit cost of the wireless repeater by minimizing components such as amplifiers and filters.

In addition, by separating the signals for the two mobile communication systems by the triple combiner, there is an effect that can remove the interference component between the elements due to the impedance variation.

Claims (5)

First and second antennas for transmitting and receiving signals wirelessly; A first duplexer for separating the signal received by the first antenna into forward first and second signals according to a frequency band; When the signal separated from the first duplexer is a forward first signal, a forward first signal is received to filter the forward first signal into a high frequency signal, and when the signal separated from the first duplexer is a forward second signal, A first triple combiner for receiving a second signal through a first switching unit controlled by a first duplexer and filtering the forward second signal into a band pass signal; A forward relay module for removing noise from each signal output from the first triple combiner and selecting and amplifying only necessary signals; A second triple combiner for filtering according to a frequency of a signal output from the forward relay module; A second duplexer which outputs an output signal of the second triple combiner through the second antenna and separates the signal received by the second antenna into reverse first and second signals according to a frequency band; A first low frequency filtering unit configured to receive and filter the reverse first signal through the second triple combiner when the signal separated by the second duplexer is a reverse first signal; A first bandpass filtering unit configured to receive and filter a second signal through a second switching unit controlled by the second duplexer when the signal separated by the second duplexer is a reverse second signal; A reverse relay module for removing noise from each signal output from the first low frequency filtering unit and the first band pass filtering unit, and selecting and amplifying only a necessary signal; A second low frequency filtering unit receiving a reverse first signal from the reverse relay module and outputting the reverse first signal through the first triple combiner, the first duplexer, and the first antenna; And A second bandpass filtering unit configured to receive a reverse second signal from the reverse relay module and output the reverse second signal through the first duplexer and the antenna through the first switching unit; Integrated wireless relay device, characterized in that comprising a. The method of claim 1, The forward relay module includes a forward low noise amplifier for removing noise from an input signal; A forward passband filter for filtering out a required signal from the forward low noise amplifier; And A forward power amplifier for amplifying the signal output from the forward passband filter; Integrated wireless relay device, characterized in that comprising a. The method of claim 1, The reverse relay module includes a reverse low noise amplifier for removing noise from an input signal; A reverse passband filter for filtering out a required signal from the reverse low noise amplifier; And A reverse power amplifier for amplifying the signal output from the reverse passband filter; Integrated wireless relay device, characterized in that comprising a. The method of claim 1, And wherein the first signal is a WCDMA signal and the second signal is a WiBro signal. The method of claim 1, The first switching unit selects and connects the first triple combiner or the second bandpass filtering unit as a forward or reverse second signal is input, and the second switching unit selects the second switching unit as a forward or reverse second signal is input. 2, a triple combiner or the first bandpass filtering unit selectively connected.

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