KR20100020350A - Repeater apparatus for supporting a plurality of networks - Google Patents

Abstract

A relay apparatus for supporting a plurality of communication networks, and an aspect of the relay apparatus for supporting a plurality of communication networks of the present invention is connected to a first base station and a second base station belonging to a different communication network from the first base station to transmit and receive signals. Receiving a first transmission signal from a first user terminal belonging to the first base station or a second transmission signal from a second user terminal belonging to the second base station using a main hub and a first antenna and a second antenna It contains the receiving remote unit.

Description

Repeater apparatus for supporting a plurality of networks

The present invention relates to a relay device, and more particularly, to a relay device for providing reverse diversity while supporting a plurality of communication networks.

Fading may occur due to interference between an indirect wave passing through the multipath and a direct wave immediately transmitted by a terrain shape, a building, or an obstacle. Due to the fading, the call may be disconnected or handoff may occur frequently, resulting in poor call quality.

On the other hand, repeaters may be installed in the sound region where the intensity of the radio wave is weakened due to an obstacle such as an underground building or a concrete building, which is difficult to reach the base station. Here, the repeater serves to amplify and transmit the signal transmitted from the base station or the signal transmitted from the user terminal.

The subway repeater located near the subway station and the subway track receives a signal from a base station dedicated to the subway or a base station near the subway and provides the signal to a user terminal of a user in a subway waiting room, a platform, or a subway vehicle. Alternatively, the subway repeater receives a signal from the user terminal and provides the signal to a base station dedicated to the subway or a base station near the subway.

In addition, in the subway, it is cumbersome to install subway repeaters for various wireless communication network services, for example, communication network services such as CDMA, PCS, WCDMA, and WiBro.

Therefore, there is a need for a relay device that integrates to support various wireless communication network services underground. In addition, there is a need for a relay device capable of providing a high quality communication service to a user terminal moving underground in a subway or the like.

An object of the present invention is to provide a relay device supporting a plurality of wireless communication network services.

Another object of the present invention is to provide a relay apparatus that can implement reverse diversity in the basement.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

One aspect of a relay device for supporting a plurality of communication networks of the present invention for achieving the above object is a first transceiver comprising a first antenna for transmitting a first transmission signal from a first base station to a first user terminal; And a second transceiver configured to transmit a second transmission signal from the second base station to a second user terminal belonging to a different communication network from the first user terminal, wherein the first transceiver uses the first antenna. Receiving a first received signal transmitted from the first user terminal and a second received signal transmitted from the second user terminal, wherein the second transceiver is transmitted from the first user terminal using a second antenna; And a third reception signal and a fourth reception signal transmitted from the second user terminal.

One aspect of a relay device for supporting a plurality of communication networks of the present invention for achieving the above object is a main hub connected to the first base station and a second base station belonging to a different communication network from the first base station for transmitting and receiving signals; And a remote unit receiving a first transmission signal from a first user terminal belonging to the first base station or a second transmission signal from a second user terminal belonging to the second base station by using a first antenna and a second antenna. It includes.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

1 is a block diagram showing a general WCDMA communication network. Referring to FIG. 1, a general WCDMA communication network (aka UMTS network) is connected to a user terminal 100, a wireless access network (UTRAN; UMTS Terrestrial RAN, 50), and a wireless access network, and is connected to an external network 40. It may include a responding core network (Core Network) 60.

The user terminal 100 may include personal digital assistants (PDAs), computers, and the like capable of wireless communication as well as user devices used for wireless communication.

A radio access network (RAN) 50 includes a base station 22, a base station controller 24, and a repeater 20 that accommodate a radio access standard of the 3GPP standard to support WCDMA. The radio access network 20 transmits a call request signal, a data transmission signal, and the like from the user terminal to the core network.

The base station 22 sets a wireless physical channel necessary for data exchange with the user terminal 100 according to the control information transmitted from the base station controller 24, and uses the data transmitted from the higher layer protocol to the user terminal 100 according to a wireless environment. To send).

A base station controller (Radio network controller) 24 dynamically allocates radio resources of the wireless communication system and controls the base station 22.

The repeater 20 serves to amplify and transmit a signal transmitted from the base station 22 or a signal transmitted from the user terminal. The repeater 20 may be installed to solve a region of a region in which a transmission signal of the base station 22 is not properly transmitted, or a region in which a radio wave is not easily received.

The mobile switching center 31 transmits a signal received or received by the base station 22, and provides a function of exchanging mobile subscribers with each other, and between mobile subscribers and fixed network subscribers such as PSTN and ISDN. do. The circuit switch 31 may include a visitor location register (VLR) having subscriber information such as location information of the user terminal 100 temporarily to process a call from the subscriber.

The circuit switched gateway (GMSC) 32 is a gateway at the point where the circuit switched 31 is connected to the external network 40. All circuit switched connections are made via circuit switched gateway 32.

The circuit switching unit 33 may be referred to as a circuit switching unit 33 including the circuit switching unit 31 and the circuit switching gateway 32, and the circuit switching unit 33 establishes a communication path with the user terminal 100 through a circuit switching connection. do.

The Serving GPRS Support Node (SGSN) 35 (SGSN) is a mobile station for managing GPRS services, calling / incoming / outgoing call processing procedures, and session management, authentication, and billing for handling packet data transmission and reception. Function and so on. It also has a routing processing function of packet data.

A packet switching gateway (GGSN) 36 is a serving node of an IP (Internet Protocol) based packet network that provides a high speed packet data service for GPRS data service. It manages the packet data, handles routing of packet data, and provides an interface for connecting the WDCMA network to the Internet.

The packet exchange support node 35 and the packet exchange gateway 36 may be referred to as a packet exchange unit 37. The packet exchange unit 37 transmits and receives data in packet units in transmitting and receiving data of the user terminal.

The home location register (HLR) 52 stores and manages the location information of the subscriber, and the authentication center (AuC) generates an authentication vector and performs a subscriber authentication function. In general, an authentication center (AuC) is interlocked with a home location register (HLR) and they can exchange information with each other.

The external network 40 is a network connected to the outside through the circuit switching unit 100 or the packet switching unit 200. The circuit switching unit 100 is related to the transmission and reception of circuits such as voice calls. The circuit switching unit 100 may be a public switched telephone network (PSTN), an integrated services digital network (ISDN), or a public land mobile network (PLMN). The packet exchange unit 200 is related to the transmission and reception of packets. The packet exchange unit 200 may be an Internet Protocol (IP) network such as the Internet.

However, the WCDMA communication network is presented as one communication network to which an embodiment of the present invention is applied. For example, the WCDMA communication network may be applied to various communication networks such as WiBro, CDMA, and WiFi.

2 shows a structure in which relay devices are listed on a general subway track.

Referring to FIG. 2, a relay apparatus in a general subway may configure a relay apparatus according to a base station according to each communication network such as WCDMA, WiBro, and PCS. For example, a relay device connected to a WCDMA base station and a WiBro base station may be represented as a relay device in a subway.

First, referring to a configuration of a relay device in a WCDMA communication network, a relay device is connected to a base station 210 located on the ground of a subway station or a base station near a subway.

The base stations 210 and 310 set up a wireless physical channel necessary for data exchange with the user terminals 100 and 110 according to the control information transmitted from the base station controller, and transmit the data transmitted from the upper layer protocol to the user terminal according to the wireless environment. 100, 110). The base station 210, 310 generally refers to a fixed station that communicates with the user terminal 100 and includes a node-B, a base transceiver system (BTS), an access point, and the like. It may be called in other terms. For example, a subway-only base station may be installed one by one with a predetermined station in between and three to four stations in between. In addition, it may be classified into a base station 210 for WCDMA, a base station 310 for WiBro, a base station for PCS, etc. according to a communication network to which the subscriber belongs.

The relay device amplifies and transmits signals transmitted from the base stations 210 and 310 or signals transmitted from the user terminals 100 and 110. The relay device may include master units 220 and 320 that are directly connected to the base stations 210 and 310, and remote units 230_1, 230_2, 230_3, 330_1, 330_2, and 330_3 that may be connected to a plurality of master units. The master units 220 and 320 transmit the transmission signals from the base stations 220 and 320 to the remote units 230_1, 230_2, 230_3, 330_1, 330_2, and 330_3 that exchange signals with the user terminals 100 and 110.

The remote units 230_1, 230_2, 230_3, 330_1, 330_2, and 330_3 receive transmission signals from the master units 220 and 320 and transmit them to the user terminals 100 and 110, or from the user terminals 100 and 110. It transmits the transmission signal to the master unit (220, 320).

The remote units 230_1, 230_2, 230_3, 330_1, 330_2, and 330_3 may include a plurality of antennas 240_1, 240_2, 240_3, 240_4, 340_1, 340_2, 340_3, and 340_4. The plurality of antennas 240_1, 240_2, 240_3, 240_4, 340_1, 340_2, 340_3, and 340_4 serve to transmit and receive wireless RF signals. For example, since two or more antennas may be installed in a remote unit for subways, it is not practical to adopt a diversity function for each antenna.

However, a user terminal 100 or 110 performing wireless communication in a vehicle of a subway moving at a high speed may suddenly lose a call while a channel state with an antenna that transmits / receives by a high speed is changed at a moment. Call drop may occur. Alternatively, the transmission signals from the base stations 210 and 310 are properly transmitted to the user terminals 100 and 110 because the power is relatively high, but the uplink transmission power of the user terminals 100 and 110 is reversed. Since it is relatively low, it may not be properly delivered to the base stations 210 and 310. Therefore, in order to more stably transmit the transmission signals of the user terminals 100 and 110 to the base stations 210 and 310 in the uplink, it is necessary to adopt the reception diversity function of the relay apparatus.

Along with this, there is a need for a relay device capable of supporting various communication networks by one relay device by integrating the relay devices of each communication network while avoiding the trouble of installing the relay devices separately according to each communication network.

3 shows a structure of a relay device according to an embodiment of the present invention.

Referring to FIG. 3, a relay device according to an embodiment of the present invention includes a main hub 250 and a remote unit 270_1, 270_2, 270_3,...

The main hub 250 is connected to base stations 210 and 310 belonging to different communication networks and receives signals from the base stations 210 and 310. The main hub 250 receives signals from each of the base stations 210 and 310 and transmits the signals to the plurality of remote units 270_1, 270_2, 270_3,... In addition, the main hub 2500 receives signals from the plurality of remote units 270_1, 270_2, 270_3,..., And transmits the signals to the base stations 210 and 310. When the 210 and 310 correspond to the base station 210 for the WCDMA or the base station 310 for the WiBro, respectively, the main hub 250 receives a signal from each of the base stations 210 and 310, and corresponding remote units 270_1 and 270_2, 270_3, ...).

The remote units 270_1, 270_2, 270_3, ... transmit the signals transmitted from the base stations 210 and 310 to the user terminals 100 and 110, and receive the transmission signals from the user terminals 100 and 110. do.

Each remote unit 270_1, 270_2, 270_3,... May include a first antenna 290 and a second antenna 295. The first antenna 290 and the second antenna 295 may transmit transmission signals transmitted from base stations 210 and 310 belonging to different communication networks, respectively. For example, when the first antenna 290 transmits a transmission signal from the base station 210 for WCDMA, the second antenna 295 may transmit a transmission signal from the base station 310 for WiBro.

The first antenna 290 and the second antenna 295 receive signals transmitted from the user terminals 100 and 110. For example, when the WCDMA user terminal 100 transmits a signal, the first antenna 290 and the second antenna 295 receive a signal from the user terminal 100. However, even when the same signal is transmitted to the remote units 270_1, 270_2, 270_3,..., Different signals may be received due to the difference in the space in which the first antenna 290 and the second antenna 295 are located. have. In addition, even if the same signal is transmitted from the corresponding user terminal 100, the first antenna 290 and the second antenna 295 may reach the first antenna 290 and the second antenna 295 by being reflected or refracted due to the underground building, the bending of the tunnel, or the change of the position of the obstacle. Can be.

Therefore, by receiving the transmission signal from the user terminal 100 by the first antenna 290 and the second antenna 295, it is possible to implement the reverse diversity function.

As described above, according to an embodiment of the present invention by connecting the base station of the various communication network to the main hub 250, it is possible to provide a relay device supporting the base station belonging to various communication networks. In addition, reverse diversity may be provided by the plurality of antennas 290 and 295 with respect to the transmission signals from the user terminals 100 and 110.

4 is a block diagram of a relay apparatus according to an embodiment of the present invention. Referring to FIG. 4, the relay device may include a main hub 250 and a remote unit 270. Here, the main hub 250 may include a third transceiver 450, a fourth transceiver 460, and a second wavelength division multiplexer 440. The remote unit 270 may include a first transceiver 410, a second transceiver 420, and a first wavelength division multiplexer 430.

The first transceiver 410 transmits a transmission signal from the first base station 210 to the first user terminal 100 through the first antenna 290. In addition, the first transceiver 410 receives transmission signals from the first and second user terminals 100 and 110 and transmits them to the first base station 210 or the second base station 310.

Similarly, the second transceiver 410 transmits a transmission signal from the second base station 310 to the second user terminal 110 through the second antenna 290. In addition, the second transmitter 310 receives transmission signals from the first and second user terminals 100 and 110 and transmits them to the first base station 210 or the second base station 310.

The first wavelength division multiplexing unit 430 integrates optical signals having different wavelengths before being carried on the optical path. Therefore, when optical signals of different wavelengths are generated according to different frequencies, the generated optical signals may be integrated. Meanwhile, the first wavelength division multiplexer 430 may split the optical signal transmitted from the second wavelength division multiplexer 440 into optical signals having different wavelengths.

Like the first wavelength division multiplexer 430, the second wavelength division multiplexer 440 may integrate optical signals having different wavelengths or may receive the integrated optical signals and separate the optical signals having different wavelengths.

The third transceiver 450 transmits a transmission signal of the first base station 210 to the second wavelength division multiplexer 440 or transmits a signal transmitted from the second wavelength division multiplexer 440 to the first base station 210. Or to the second base station 310.

Similarly, the fourth transceiver 460 transmits the transmission signal of the second base station 310 to the second wavelength division multiplexer 440 or transmits the signal transmitted from the second wavelength division multiplexer 440 to the first base station ( 210 or to the second base station 310.

Hereinafter, a process of transmitting a down-link signal and a transmitting of an up-link signal will be described. In this case, the first base station 210 is a base station supporting a WCDMA communication network, and the second base station 310 is a base station supporting a WiBro communication network. This corresponds to one example, and may be applicable to a base station supporting various communication networks.

For example, in the WCDMA communication network, transmission of a downlink first transmission signal is performed by the first base station 210, the third transceiver 450, the second wavelength division multiplexer 440, and the optical path 225. The first wavelength division multiplexer 430, the first transceiver 410, the first antenna 290, and the first user terminal 100 are delivered in this order. On the contrary, the reverse signal is transmitted from the first user terminal 100, the first antenna 290 and the second antenna 295, the first transceiver 410, the second transceiver 420, and the first wavelength division multiplexer. 430, the optical path 225, the second wavelength division multiplexer 440, the third transmitter 450, the fourth transceiver 460, and the first base station 210. Here, the signal received by the first antenna 290 from the first user terminal 100 is a first received signal, and the signal received by the second antenna 295 from the first user terminal 100 is a second received signal. It is called. Accordingly, although the same signal is transmitted from the first user terminal 100, the first antenna 290 and the second antenna 295 may receive different signals from each other.

In addition, the transmission of the down-link second transmission signal in the WiBro communication network is performed by the second base station 310, the fourth transceiver 460, the second wavelength division multiplexer 440, the optical path 225, The first wavelength division multiplexer 430, the second transceiver 420, the second antenna 295, and the second user terminal 110 are transmitted in the order. On the contrary, the reverse signal is transmitted by the second user terminal 110, the first antenna 290 and the second antenna 295, the first transceiver 410, the second transceiver 420, and the first wavelength division multiplexer. 430, the optical path 225, the second wavelength division multiplexer 440, the third transmitter 450, the fourth transceiver 460, and the second base station 310. Here, the signal received by the first antenna 290 from the second user terminal 110 is called a third received signal, and the signal received by the second antenna 295 from the second user terminal 110 is a fourth received signal. It is called. Accordingly, although the same signal is transmitted from the second user terminal 110, the first antenna 290 and the second antenna 295 may each receive different signals.

As described above, in the transmission of the reverse signal, the relay device receives the signal using the first antenna 290 and the second antenna 295, and the received signal is transmitted to the main hub 25 through the optical path 225. Is delivered to each base station (210, 310). Therefore, even if the reception sensitivity of any one of the first antenna 290 and the second antenna 295 decreases, the reception ratio of the other antenna can be relatively high, so that the reverse reception can be made relatively stable.

In addition, by connecting the relay device to the base stations 210 and 310 supporting different communication networks, the plurality of base stations 210 and 310 may be supported by one relay device. Therefore, it can be advantageous in terms of cost, such as the number of parts of a cable and a relay device.

5 is a circuit diagram of a relay device according to an embodiment of the present invention. Referring to FIG. 5, the low noise amplifiers 501, 502, 503, 504, 505, 506, 551, 552, 553, 554 (LNA) are high frequencies that lower the overall noise figure of the main hub 250 or the remote unit 270. It is an amplifier. The all-optical converters 511, 512, 561, and 562 LD convert the RF signal into an optical signal. On the contrary, the photoelectric conversion units 516, 517, 566, and 567 (PD) serve to convert optical signals into RF signals.

The power amplifiers 571 and 572 are power increasing amplifiers, and may be low frequency power amplifiers and / or high frequency power amplifiers. For example, an RF amplifier supplying power to the antennas 290 and 295 is called a termination power amplifier.

The duplexers 521, 522, and 576 (D1) serve to separate signals having different frequencies. For example, in the case of the second antenna, the duplexer 576 may separate signals of the reception band frequency f ₂ of the WCDMA network and the transmission / reception band frequency f ₃ of the WiBro network, respectively.

Similarly, the triplexer 577 (D2) separates signals included in three different frequency bands. For example, in the case of the first antenna, signals of the transmission band frequency f ₁ , the reception band frequency f ₂ , and the transmission / reception band frequency f ₃ of the WiBro network are respectively received by the triplexer 577. Can be separated. On the other hand, in the case of WiBro, since data is transmitted and received by the time division method (TDD), data is transmitted and received in the forward or reverse direction while varying time in the same frequency band f ₃ .

The combiners 581 and 582 (2W) bundle one signal having a different frequency to give one output value. According to the number of signals to be merged, it may be divided into two-way (2-Way), three-way (3-Way) and the like.

The wavelength division multiplexing units 530 and 580 (WDM) serve to integrate optical signals having different wavelengths before being carried on the optical path 225. Therefore, it is possible to integrate or separate and transmit optical signals having different wavelengths.

The switches 591 and 592 may distinguish the first switch 591 and the second switch 592. The first switch 591 determines whether the signal received by the first antenna 290 is a signal transmitted from the second user terminal 110 and turns on / off the signal. For example, when the first switch 591 is for WiBro reception, the signal received by the first antenna 290 is transmitted from the triplexer 577 when the signal received from the second user terminal 100 supporting the WiBro communication network is transmitted. On to transmit the signal.

The second switch 592 serves to switch a signal transmitted and received through the WiBro communication network. The received signal from the second user terminal 110 is led to the low noise amplifier 553 by the second switch 592 via the duplexer 576. In addition, the transmission signal transmitted from the WiBro base station 310 is induced to be delivered to the duplexer 576 by the second switch 592 via the power amplifier 572. As such, the second switch 592 serves to connect the signals transmitted and received through the WiBro communication network to each device in order to transmit and receive the signals through the second antenna 295. Referring to FIG. 5 again, the WCDMA communication network Forward signal transmission from the base station 210 is performed by the base station 210, the low noise amplifier 501, the all-optical converter 511, the wavelength division multiplexer 530, the optical path 225, and the wave division multiplexer 580. The photoelectric converter 566, the power amplifier 571, the triplexer 577, the first antenna 290, and the first user terminal 100 are delivered in this order.

On the contrary, the reverse signal transmission may be divided into a signal transmission from the first user terminal 100 through the first antenna 290 and a signal transmission through the second antenna 295. The signal is transmitted through the first antenna 290, the first antenna 290, the triplexer 577, the low noise amplifier 552, the combiner 581, the all-optical converter 561, the wavelength division multiplexer ( 580, the optical path 225, the wavelength division multiplexer 530, the photoelectric converter 516, the duplexer 521, the low noise amplifier 502, and the first base station 210. In addition, the signal is transmitted through the second antenna 295, the second antenna 295, the duplexer 576, the low noise amplifier 554, the combiner 582, the all-optical converter 562, and the wavelength division multiplexer. 580, the optical path 225, the wavelength division multiplexer 530, the photoelectric converter 517, the duplexer 522, the low noise amplifier 505, and the first base station 210.

Accordingly, the first base station 210 receives the first signal transmitted through the first antenna 290 and the second signal transmitted through the second antenna 295, respectively, from the first user terminal 100. The transmitted signal can be processed. Accordingly, the reverse reception rate may be increased by receiving the signals transmitted from the same first user terminal 100 from the first antenna 290 and the second antenna 295, respectively.

Similarly, the forward signal transmission to the base station 310 of the WiBro communication network is performed by the base station 310, the low noise amplifier 504, the all-optical conversion unit 512, the wavelength division multiplexer 530, the optical path 225, and the wave load. The division multiplexer 580, the photoelectric conversion unit 567, the power amplifier 572, the duplexer 576, the second antenna 295, and the second user terminal 110 are delivered in this order.

On the contrary, transmission of the reverse signal may be divided into signal reception through the first antenna 290 and signal reception through the second antenna 295. Signal transmission through the first antenna 290 is the first antenna 290, triplexer 577, low noise amplifier 551, combiner 581, all-optical converter 561, wavelength division multiplexer 580 ), The optical path 225, the wavelength division multiplexer 530, the photoelectric converter 516, the duplexer 521, the low noise amplifier 503, and the second base station 310. Also, the signal transmission through the second antenna 295 is performed by the second antenna 295, the duplexer 576, the low noise amplifier 553, the combiner 582, the all-optical converter 562, and the wavelength division multiplexer ( 580, the optical path 225, the wavelength division multiplexer 530, the photoelectric converter 517, the duplexer 552, the low noise amplifier 506, and the second base station 310 in this order.

As described above, the reception rate of the uplink may be increased by receiving the signal transmitted from the second terminal 110 supporting the WiBro communication network through the first antenna 290 and the second antenna 295. . In addition, it is possible to reduce the installation cost by passing through the same relay device for a communication network supporting different communication networks.

 On the other hand, the components or '~' used in this embodiment is software such as tasks, classes, subroutines, processes, objects, execution threads, programs, or FPGAs (field-) that are performed in a predetermined area on the memory. It may be implemented in hardware such as a programmable gate array or an application-specific integrated circuit (ASIC), or may be a combination of the software and hardware. The component or 'unit' may be included in a computer readable storage medium, or a part of the components may be distributed and distributed to a plurality of computers.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations, modifications, and modifications without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other embodiments may be embodied. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is a block diagram illustrating a UMTS communication network according to an embodiment of the present invention.

2 is a diagram illustrating a structure in which relay devices are listed on a general subway track.

3 is a view showing the structure of a relay device according to an embodiment of the present invention.

4 is a block diagram of a relay apparatus according to an embodiment of the present invention.

5 is a circuit diagram of a relay device according to an embodiment of the present invention.

* Description of the main parts of the drawings *

100: first user terminal 110: second user terminal

210: first base station 220: second base station

250: main hub 270, 270_1, 270_2, 270_3: remote unit

410: first transceiver unit 420: second transceiver unit

430: first wavelength division multiplexer 440: second wavelength division multiplexer

450: third transceiver 460: fourth transceiver

501, 502, 503, 504, 505, 506, 551, 552, 553, 554; Low Noise Amplifier (LNA)

511, 512, 561, 562; All-optical conversion part (LD)

516, 517, 566, 567; Photoelectric Changer (PD)

571, 572; Power amplifier (PA)

521, 522, 576; Duplexer (D1)

577; Triplexer (D2)

Claims (13)

A first transceiver comprising a first antenna for transmitting a first transmission signal from a first base station to a first user terminal; And A second transceiver comprising a second antenna for transmitting a second transmission signal from a second base station to a second user terminal belonging to a different communication network from the first user terminal, The first transceiver receives a first received signal transmitted from the first user terminal and a second received signal transmitted from the second user terminal using a first antenna, And the second transceiver transmits and receives a third received signal transmitted from the first user terminal and a fourth received signal transmitted from the second user terminal using a second antenna. The method of claim 1, And a wavelength division multiplexing unit configured to integrate and transmit a plurality of optical signals having different wavelengths to transmit and receive signals of the first transceiver and the second transceiver. The method of claim 1, The first transceiver and the second transceiver is located in a subway tunnel or underground, The first received signal and the third received signal are signals received by the first antenna and the second antenna from the signal transmitted from the first user terminal, respectively. And the second received signal and the fourth received signal are signals received by the first antenna and the second antenna from signals transmitted from the second user terminal, respectively. The method of claim 1, A third transceiver for receiving the first received signal through an optical path and transmitting the first received signal to the first base station; And And a fourth transceiver configured to receive the third received signal through an optical path, and to transmit the third received signal to the first base station. The method of claim 4, wherein And the first base station processes the signal from the first user terminal using the first received signal and the third received signal. The method of claim 1, A third transceiver for receiving the second received signal through an optical path and transmitting the second received signal to the second base station; And And a fourth transceiver configured to receive the fourth received signal through an optical path, and to transmit the fourth received signal to the second base station. The method of claim 1, The first base station is a base station supporting a WCDMA communication network, And the second base station is a base station supporting WiBro communication. The method of claim 1, wherein the first transceiver A triplexer connected to the first antenna and separating and passing the first transmission signal, the first reception signal, and the second reception signal; And the first transmission signal, the first reception signal, and the second reception signal are signals having different frequency bands. The method of claim 1, wherein the second transceiver A duplexer connected to the second antenna and separating and passing the second transmission signal, the third reception signal, and the fourth reception signal, And the second transmission signal and the fourth reception signal are signals having the same frequency band. A main hub connected to a first base station and a second base station belonging to a different communication network from the first base station to transmit and receive a signal; And A remote unit receiving a first transmission signal from a first user terminal belonging to the first base station or a second transmission signal from a second user terminal belonging to the second base station using a first antenna and a second antenna; A relay device that supports a plurality of communication networks, including. 11. The method of claim 10, wherein the remote unit A first transmitter for receiving the first transmission signal through the first antenna and processing the first transmission signal or receiving the second transmission signal and processing the second transmission signal; And And a second transmitter configured to receive the first transmission signal through the second antenna and process the received signal as a third received signal, or receive and process the second transmitted signal as a fourth received signal. Device. The method of claim 11, wherein the main hub A third transceiver for receiving the first received signal through an optical path and transmitting the first received signal to the first base station; And And a fourth transceiver configured to receive the third received signal through an optical path, and to transmit the third received signal to the first base station. The method of claim 11, The first transceiver and the second transceiver is located in a subway tunnel or underground, The first received signal and the third received signal are signals received by the first antenna and the second antenna from the signal transmitted from the first user terminal, respectively. And the second received signal and the fourth received signal are signals received by the first antenna and the second antenna from signals transmitted from the second user terminal, respectively.

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