KR100928625B1 - Expansion system of optical repeater for wireless communication - Google Patents

Abstract

The present invention enables further expansion of the optical repeater by using an additional expansion optical repeater having a simple configuration to reduce the cost and installation space, and between the main optical repeater and the additional expansion optical repeater that is further extended Provided is an extension system of an optical repeater for wireless communication, which can be connected through at least one RF cable to reduce costs.

To this end, the present invention receives the forward signal from the base station and radiates to its own installation area and transmits it to the additionally extended repeater, and the backward signal from the additional expansion area received from the additionally extended repeater from its installation area. The main repeater coupled to the base station and transmitted to the base station, and the base station forward signal from the main repeater to a high power amplification with a signal compensation and rated capacity to radiate to its own installation area, the reverse signal received from its installation area And an additional extension repeater for filtering and signal-compensating the signal and transmitting the signal to the main repeater, and a connection cable connecting the main repeater and the additional extension repeater to form a signal path of forward and reverse signals. do.

Description

Expandable System for Mobile Communication Optice Repeater

The present invention provides a wireless communication optical link that can be connected to the additional repeater of the compact (Compact) configuration in the expansion of the repeater from the main repeater to the other shaded area in the wireless communication optical repeater to reduce the cost and installation space A repeater expansion system.

In general, a mobile communication network system is a main device that performs switching for voice calls and data transmission, and is mainly a mobile communication switch, and a wireless base station in which a plurality of areas are distributed by dividing the area controlled by the corresponding mobile communication switch into a plurality of sectors. And a base station controller which bundles each base station by region and manages a plurality of base stations, respectively.

Wireless base stations of mobile communication network systems are installed in each area so that subscribers of mobile communication devices can communicate smoothly in the coverage of their area. However, their base area has many skyscrapers, high-rise apartments, etc. In the case of an area or an apartment complex area, there are shaded areas where smooth communication cannot be performed due to obstacles such as buildings.

In order to eliminate such shaded areas, recently, an optical repeater for relaying a signal path between a mobile communication terminal and a wireless base station through an optical cable has been developed and widely used on the shaded area side.

Meanwhile, in such wireless communication optical repeaters, new shaded areas often occur according to changes in the environment and facilities of the installation area.In order to cover these new shaded areas, an optical repeater installed as a main repeater is used as the main repeater. A separate additional repeater with the same device configuration can be extended and connected via an optical cable.

That is, FIG. 1 is a diagram illustrating an expansion configuration using a main repeater of a conventional general cascade method.

As shown in FIG. 1, the main repeater 10 connected to the wireless base station side via an optical cable transmits a forward signal FWD from the base station through an antenna and a reverse signal (RVS) from the subscriber side mobile communication terminal. ) And a reverse diversity signal (RVS_Div) is received from the antenna to be processed and transmitted to the base station through the optical cable.

In this state, when a new shaded area is generated and an additional relay device needs to be expanded, a main repeater 20 having the same device configuration and the same specification as the corresponding main repeater 10 is installed in the shaded area as shown in the figure. In addition, the optical splitter 30 allows the relays to be connected 1: 1 by a cascade method through an optical cable.

However, in the case of the expansion configuration of the optical repeater through the conventional cascade method, when the repeater device needs to be extended, the repeater having the same device configuration as the main repeater must be expanded, so that the equipment cost of the initial main repeater is the same. In addition to the disadvantage of having to spend money, more repeaters of the same size need to be installed, and thus more installation space is required, and a problem arises in that the cost is increased as each relay is connected through an expensive optical cable. .

Therefore, the present invention has been made to solve the above-described problems, the object of which is to further expand the optical repeater by using an additional expansion optical repeater having a simple configuration is possible to reduce the cost and installation space It is to provide an extension system of the optical repeater for wireless communication.

Another object of the present invention is to provide an extension system of an optical communication repeater for wireless communication, which enables cost reduction by connecting an additional expansion optical repeater that is further extended with a main optical repeater through at least one RF cable.

In order to achieve the above object, according to an exemplary embodiment of the present invention, a forward signal from a base station is received and radiated to its own installation area and transmitted to an additional extended repeater, and further received from the extended repeater. A main repeater which combines the reverse signal from the extended area with the reverse signal from its own installation area to the base station, and the base station forward signal from the main repeater with high power amplification with signal compensation and rated capacity to its own installation area. An additional expansion repeater for radiating, filtering and signal-compensating a reverse signal received from an installation area thereof and transmitting the signal to the main repeater; and a signal path of forward and reverse signals by connecting the main repeater and the additional expansion repeater. Link forming Provided is an extension system of an optical repeater for wireless communication, comprising a cable.

According to a system according to another example of the present invention to achieve the above object, by receiving a forward optical signal from the base station through the optical cable and photoelectric conversion to radiate to its installation area through a single forward / reverse common cable Additionally transmits to the extended repeater, combines the reverse signal from the additional extended area received from the additionally extended repeater with the reverse signal from its own installation area and transmits the optical signal to the base station via an optical cable, and transmits a single forward / The main repeater performs mutual control communication with the additionally extended repeater through the reverse common cable, and receives the base station forward signal from the main repeater through a single forward / reverse common cable to amplify high power with signal compensation and rated capacity. Installation Radiates backward, filters and compensates for the reverse and reverse diversity signals received from its installation area, and transmits them to the main repeater via a single forward / reverse common cable and reverse diversity cable, respectively. An additional extension repeater which performs mutual control communication with the main repeater through a common forward / reverse common cable, a forward signal from the main repeater and a reverse signal from the additional extension repeater through one cable, and control for mutual control communication. A single forward / reverse common cable for transmitting and receiving information signals, and a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater, the extension of the optical communication repeater for wireless communication Article system The.

In order to achieve the above object, according to a system according to another embodiment of the present invention, receiving a forward optical signal from the base station through the optical cable and photoelectric conversion to radiate to its own installation area and a single forward / reverse common cable Transmits to an additional extended repeater through a single forward / reverse common cable, combines the reverse signal from the additional extended area received from the additional extended repeater with the reverse signal from its own installation area, and converts A main repeater which transmits to the base station and performs mutual control communication with an additionally extended repeater through a control communication cable, and receives a base station forward signal from the main repeater through a single forward / reverse common cable and compensates and evaluates the signal; With capacity High power amplification to radiate to the installation area, filtering and signal compensating reverse and reverse diversity signals received from the installation area to the main repeater through a single forward / reverse common cable and reverse diversity cable, respectively. An additional extension repeater for performing mutual control communication with the main repeater through a control communication cable, and a single forward signal for transmitting and receiving a forward signal from the main repeater and a reverse signal from the additional extension repeater through one cable. A reverse common cable, a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater, and a control information signal for mutual control communication between the main repeater and the additional extension repeaterControl further comprises a communication cable to provide a scalable system for radio communication, it characterized in that an optical repeater is configured.

In addition, according to a system according to another embodiment of the present invention, by receiving a forward optical signal from the base station through the optical cable and photoelectric conversion to radiate to its own installation area and transmits to the additional extended repeater through the forward dedicated cable, The reverse signal from the additional expansion area received from the additionally extended repeater through the reverse dedicated cable is combined with the reverse signal from its installation area to convert the optical signal and transmit it to the base station through the optical cable, and further extended through the reverse dedicated cable. The main repeater performing mutual control communication with the old repeater, and the base station forward signal from the main repeater is received through a dedicated cable for forwarding and amplified with high power with signal compensation and rated capacity to radiate to its own installation area, and its own installation area Filtering and signal compensating a reverse signal and a reverse diversity signal received from the reverse signal to the main repeater through a reverse dedicated cable and a reverse diversity cable, and performing mutual control communication with the main repeater through a reverse dedicated cable. An extension repeater, a forward-only cable for transmitting only the forward signal of the main repeater to an additional expansion repeater, a reverse signal of the additional extension repeater to the main repeater, and transmitting and receiving control information signals for mutual control communication. It provides an extension system for a wireless communication optical repeater comprising a reverse dedicated cable, and a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater.

On the other hand, the main repeater according to the present invention is connected through a specific additional expansion repeater and a connecting cable, photoelectric conversion of the forward optical signal from the base station to the forward RF signal and distributes to a plurality of paths, any one of the path Compensate for a forward RF signal of and transmit the signal to the additional extension repeater through the connection cable, and receive a reverse RF signal from the installation area of the corresponding main repeater from the additional extension repeater received through the connection cable. It is characterized in that it is configured to couple to one reverse RF signal, convert the optical signal into a reverse optical signal, transmit it to a base station, and exchange control information signals for mutual control communication with the additional extension repeater.

In addition, the repeater for further expansion according to the present invention is connected via a main cable and the main repeater, and radiates the base station forward RF signal from the main repeater with high power amplification with signal compensation and rated capacity to its installation area, Filtering and compensating the reverse RF signal and the reverse diversity signal received from the installation area, respectively, are transmitted to the main repeater through the connecting cable, and the control information signal for mutual control communication with the main repeater through the connecting cable. Characterized in that it is made to exchange.

As described above, according to the present invention, in the case where it is desired to further extend another repeater to a shaded area by using the wireless communication repeater as the main repeater, a simple configuration for implementing a signal compensation function, a high output power amplification function, and a bandpass filtering function of a reverse signal In order to provide additional extended repeaters, and to connect the main repeater and the additional extended repeaters with RF cables so that transmission and reception of forward and reverse signals can be made through the RF cable, it is necessary to provide additional extended repeaters with simple components. It is possible to save considerable cost compared to the existing expansion method of the same main repeater, and to reduce the installation space by miniaturization of the additional expansion repeater due to the simple configuration, and to reduce the installation cost, Because we use RF cable It has an excellent effect that a possible additional costs.

Hereinafter, an embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, Figure 2 is a diagram showing the overall configuration of the expansion system of the optical repeater for wireless communication according to an embodiment of the present invention.

As shown in FIG. 2, an extension system of an optical repeater for wireless communication according to an exemplary embodiment of the present invention includes a main repeater 100 connected to a base station and a predetermined shadow area that the main repeater 100 cannot cover. Additional extension repeater 200 is further extended to cover the forward, the forward connecting the respective main repeater 100 and the additional expansion repeater 200 for further expansion of the repeater from the main repeater 100, respectively It consists of a Forward / Reverse (FWD / RVS) common RF cable 300 and a Reverse Diversity RF cable 302.

The main optical repeater 100 is connected to the base station side through an optical cable, and further extended repeater 200 further extended to the shadow area, and forward / reverse common RF cable 300 and reverse diversity RF cable ( 302 is connected, and distributes the forward signal from the base station to the additional expansion repeater 200, and relayed from the shaded area through the additional expansion repeater 200 from the mobile communication terminal The reverse signal is converted into an optical signal and transmitted to the base station.

Here, the main repeater 100 is composed of an optical module 102, a forward RF module 104, a reverse RF module 106, a relay circuit module, a control communication unit.

The relay circuit module includes a 3-way divider 108, a low noise amplifier (LNA) 110, 112, and 118, a band pass filter (BPF) 114 and 116, It comprises an attenuator 120, a duplexer 122, a 2-way divider 124, 126, a band pass filter 128, 130, a coupler (132, 134), The control communication unit includes a modem 136 and a main control unit (MCU) 138.

The optical module 102 transmits and receives a forward optical signal from a base station and a reverse optical signal from a mobile communication terminal through an optical cable connected to the base station.

The forward RF module 104 photoelectrically converts a forward optical signal from the optical module 102 into a forward RF signal, and the reverse RF module 106 is coupled through each of the couplers 132 and 134 to flow in. The reverse RF signal and the reverse diversity signal from the mobile communication terminal of the corresponding main repeater 100 and the reverse RF signal and the reverse diversity signal of the mobile communication terminal of the additional extension repeater 200 are respectively reverse optical signals. All-optical conversion to and output to the optical module (102).

The three-way divider 108 forwards the forward RF signal from the forward RF module 104 to the repeater 200 for further expansion via two paths and RF cables radiated through the SVC antenna of the corresponding main repeater. The signal is divided and output in three directions including one path to be transmitted.

Each of the low noise amplifiers 110 and 112 performs low noise amplification on the two-path forward RF signals distributed from the three-way divider 108, and outputs each of the band pass filters 114 and 116 to each of the low noise amplifiers 110 and 112. The low noise amplified two paths of the signal are filtered by the required band so that each of the forward RF signals FWD_0 and FWD_1 can be radiated through the SVC antenna.

The low noise amplifier 118 low noise amplifies the forward RF signal along the path of the further expansion repeater 200 distributed from the three-way divider 108, and the attenuator 120 low noise from the low noise amplifier 118. Signal attenuation of the amplified forward RF signal compensates for the signal level of the RF signal.

The duplexer 122 is connected to the three-way divider 108 via the attenuator 120 and the low noise amplifier 118, and is connected to the modem 136, and is connected to the coupler 132. A single forward / reverse common cable 300 is connected to the additional extension repeater 200 to enable transmission and reception of RF signals, and designates signal paths for the forward RF signal, reverse RF signal, and control information signal. Output to the path.

Here, the duplexer 122 serves to pass the frequency of the desired band by separating the transmission and reception frequency, the band using the dielectric constant characteristics of the microwave dielectric to perform a radio wave filtering function to filter out only the required radio waves and remove the unnecessary ones. It consists of a pass filter.

Each of the two-way dividers 124 and 126 has two paths of reverse RF signals (RVS_0 and RVS_1) and two paths of reverse diversity from the mobile communication terminal near the corresponding main repeater 100 received through the SVC antenna. The signals RVS_Div_0 and RVS_Div_1 are respectively signal-coupled and output.

Each of the bandpass filters 128 and 130 removes unwanted waves from the reverse RF signals and the reverse diversity signals from the two-way dividers 124 and 126 and performs bandpass filtering on only necessary bands.

The coupler 132 is a reverse RF signal from the repeater 200 for further expansion from the duplexer 122, and a reverse RF of the corresponding main repeater 100 that is bandpass filtered through the bandpass filter 128. The signal is coupled and output to the reverse RF module 106.

The coupler 134 further receives a reverse diversity signal on the main repeater 100 side filtered through the band pass filter 130 through the reverse diversity RF cable 302. The reverse diversity signal from the repeater 200 is coupled and output to the reverse RF module 106.

The modem 136 controls the main repeater 100 of the main repeater 100 through communication with the duplexer 122 and the modem 226 of the additional extension repeater 200 through a forward / reverse common RF cable 300. Signal transmission and reception is performed for control communication between the unit 138 and the main control unit 228 of the further extension repeater 200.

The main control unit 138 checks the state of the corresponding main repeater 100, generates control information accordingly, and transmits the control information to the additional expansion repeater 200 through the modem 136. The control information is received from the main control unit 228 of the 200 and the control for checking the state between the additional expansion repeater 200 and the main repeater 100 is performed.

In one embodiment of the present invention, the additional extension repeater 200 is fixedly installed in a shaded area that the main repeater 100 can not cover, the forward and reverse common RF cable ( 300) and a reverse diversity RF cable 302, and receives a forward RF signal from a base station distributed and transmitted through the main repeater 100, and then performs signal compensation and power amplification by the rated capacity. It transmits to the mobile communication terminal located in the shadow area, and filters only the required bands of the reverse RF signal (RVS) and the reverse diversity signal (RVS_Div) from the mobile communication terminal and compensates the signal to the main repeater (100) side. send.

That is, the additional extension repeater 200 includes an RF interface module 202 performing signal compensation functions of forward and reverse signals and a reverse diversity signal, and a high power amplifier 204 performing high output power amplification of forward signals. And a simple component having only bandpass filters 206 and 208 for performing the required band filtering function of the reverse signal and the reverse diversity signal, respectively, and can be implemented simply and inexpensively compared to the configuration of the main repeater 100. have.

The high power amplifier 204 power-amplifies the forward RF signal from the base station where the forward signal separation and signal compensation is performed through the RF interface module 202 to a high output of a required rated capacity, and is located in the corresponding shadow area through the SVC antenna. It can be transmitted to the mobile communication terminal side.

In addition, the bandpass filter 206 performs bandpass filtering to remove unwanted waves other than the carrier frequency band from the reverse RF signal received from the mobile communication terminal in the shaded area, and the bandpass filter 208 performs the Bandpass filtering is performed to remove unwanted waves other than the required band from the reverse diversity signal.

Here, the RF interface module 202 of the additional extension repeater 200, the coupler 210, duplexer 212, attenuators 214, 220, 224, low noise amplifiers (216, 218, 222), modem 226, main control unit And 228.

The coupler 210 couples and transmits a forward RF signal from the main repeater 100 and a reverse RF signal from the duplexer 212 through the forward / reverse common RF cable 300.

The duplexer 212 is connected to the coupler 210 and to the high power amplifier 204 via the attenuator 214 and the low noise amplifier 216, and connects the attenuator 220 and the low noise amplifier 218. It is connected to the bandpass filter 206 by a medium, and outputs a signal path for the forward RF signal from the coupler 210 and the reverse RF signal from the bandpass filter 206 to a specified path.

The attenuator 214 performs a level compensation operation of the RF signal through signal attenuation of the forward RF signal from the duplexer 212, and the low noise amplifier 216 receives the forward RF signal from the attenuator 214. The low-noise amplification compensates the signal loss due to the cable and outputs it to the high power amplifier 204.

The low noise amplifier 218 low noise amplifies the band pass filtered reverse RF signal through only the required band through the band pass filter 206, and the attenuator 220 attenuates the signal for the low noise amplified reverse RF signal. Through the level compensation of the RF signal is performed.

The low noise amplifier 222 low noise amplifies the reverse diversity signal through the bandpass filter 208, and the attenuator 224 compensates the signal level through signal attenuation for the low noise amplified reverse diversity signal. Do this.

The modem 226 is a main control of the additional extension repeater 200 through communication with the modem 136 of the main repeater 100 via the coupler 210 and the forward / reverse common RF cable 300 Signal transmission and reception for control communication between the unit 228 and the main control unit 138 of the main repeater 100 is performed.

The main control unit 228 checks the state of the additional extension repeater 200 and generates control information accordingly, and transmits the control information to the main repeater 100 through the modem 226, and the main repeater 100. Receives control information from the main control unit 138) and performs a control to check the state between the additional expansion repeater 200 and the main repeater 100.

In one embodiment of the present invention, the forward / reverse common RF cable 300 is a forward RF signal from the base station through the main repeater 100 through a single RF cable, and through the repeater 200 for further expansion A reverse RF signal from a mobile communication terminal and control information signals through which communication is performed through modems 136 and 226 of each repeater are transmitted and received, respectively.

The reverse diversity RF cable 302 transmits a reverse diversity signal from the additional extension repeater 200 as an RF signal to the main repeater 100.

Operation according to an embodiment of the present invention made as described above will be described in detail with reference to FIG.

First, the main repeater 100 is connected to an additional extension repeater 200 fixedly installed in a predetermined shadow area through a single forward / reverse common RF cable 300 and a reverse diversity RF cable 302. It is a state.

In this state, the forward optical signal from the base station received from the optical module 102 of the main repeater 100 is photoelectrically converted through the forward RF module 104 and the signal path through the three-way divider 108. Is divided into three paths, two paths of which are forward RF signals FWD_0 through low noise amplification through each of the low noise amplifiers 110 and 112 and bandpass filtering of only the required bands through the bandpass filters 114 and 116, respectively. , FWD_1) is radiated through the SVC antenna.

In addition, through one of the three paths of the three-way divider 108, the forward RF signal is low-noise amplified by the low noise amplifier 118, and through the signal compensation through the attenuator 120 through the duplexer 122 By the signal routing of the transmission through the single forward / reverse common RF cable 300 to the repeater 200 for further expansion.

The coupler 210 of the additional extension repeater 200 couples the forward RF signal received through the forward / reverse common RF cable 300 to the duplexer 212, and outputs the duplexer 212. The forward RF signal is transmitted in the signal path on the designated high power amplifier 204 side.

The forward RF signal through the duplexer 212 of the additional expansion repeater 200 is processed by the high power amplifier 204 through the compensation of the signal level through the attenuator 214 and the low noise amplification processing through the low noise amplifier 216. It is amplified by the rated capacity and radiated through the SVC antenna to the shaded area.

Meanwhile, the additional extension repeater 200 filters only the required bands through the band pass filters 206 and 208 for the reverse RF signal and the reverse diversity signal from the mobile communication terminal of the corresponding shaded region received through the SVC antenna. Low noise amplification through each of the low noise amplifiers 218 and 222 of the RF interface module 202, and signal levels are compensated through the respective attenuators 220 and 224.

In this case, the reverse RF signal passing through the low noise amplifier 218 and the attenuator 220 from the band pass filter 206 is output to the signal path on the coupler 210 side determined by the duplexer 212, and the coupler 210 ) Couples the reverse RF signal and transmits the reverse RF signal to the main relay 100 through a single forward / reverse common RF cable 300.

In addition, the reverse diversity signal from the bandpass filter 206 through the low noise amplifier 222 and the attenuator 224 is transmitted to the main repeater 100 directly through the reverse diversity RF cable 302.

Here, the main repeater 100 outputs the reverse RF signal received through the single forward / reverse common RF cable 300 to the coupler 132 by signal routing of the duplexer 122, and the The coupler 132 receives the reverse RF signal of the corresponding main repeater 100 received from the two-way divider 124 and bandpass filtered through the bandpass filter 128 from the additional repeater 200. Coupling with the reverse RF signal of the output to the reverse RF module 106.

On the other hand, in the coupler 134 of the main repeater 100, the two-way divider 126 receives a reverse diversity signal received from the additional extension repeater 200 through a reverse diversity RF cable 302. And coupled to the reverse diversity signal of the corresponding main repeater 100 receiving through the bandpass filter 130 and outputs the reverse diversity signal to the reverse RF module 106.

The reverse RF module 106 converts the reverse RF signal from the coupler 132 and the reverse diversity signal from the coupler 134 to the optical module 102 as a reverse optical signal.

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

That is, Figure 3 is a view showing the overall configuration of the expansion system of the optical repeater for wireless communication according to another embodiment of the present invention, another embodiment of the present invention shown in the figure is one embodiment of the present invention according to FIG. The same reference numerals are assigned to the same components as the examples, and detailed description thereof will be omitted.

As shown in FIG. 3, in another embodiment of the present invention, unlike one embodiment of the present invention, a modem communication function between a main repeater 100 and an additional expansion repeater 200 through each modem 136 and 226 may be performed. Instead of being deleted, a separate control communication cable 402 for direct control communication between the main control unit 138 of the main repeater 100 and the main control unit 228 of the further expansion repeater 200. This allows each main control unit (138, 228) to be connected.

The control communication cable 402 is preferably made of a serial / parallel communication cable such as RS-422 method or RS-485 method, in this case, each communication port that satisfies the RS-422 or RS-485 method It is preferred that the main repeater 100 and the additional repeater 200 is provided. ,

Meanwhile, the signal transmission / reception paths for the forward RF signal from the main repeater 100 and the reverse RF signal from the additional extension repeater 200 are performed through a separate single forward / reverse common RF cable 400, The signal path of the reverse diversity signal is performed through a separate reverse diversity RF cable 404 as in the embodiment of the present invention.

Next, another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

That is, Figure 4 is a view showing the overall configuration of the expansion system of the optical repeater for wireless communication according to another embodiment of the present invention, another embodiment of the present invention in the Figure is one of the present invention shown in FIG. Like reference numerals refer to like elements throughout, but a detailed description thereof will be omitted.

As shown in FIG. 4, in another embodiment of the present invention, unlike the embodiment of the present invention in which a single forward / reverse common R cable 300 is applied, the forward RF signal from the main repeater 100 is applied. A forward only RF cable 500 that is responsible for only transmitting the function to the additional expansion repeater 200, and transmits the reverse RF signal from the additional expansion repeater 200 to the main repeater 100 And a reverse dedicated RF cable 502 in charge of control communication for exchanging control information between the modems 136 and 226.

Since the dedicated RF cable 500 for transmitting only the forward RF signal and the dedicated RF cable 502 for transmitting the reverse RF signal and the control information signal are separately provided, the main repeater 100 according to one embodiment of the present invention. Unlike the embodiment, the duplexer 122 is deleted and the coupler 140 is additionally configured.

The coupler 140 couples the control information signal from the modem 136 and transmits it to the additional extension repeater 200 through a reverse dedicated RF cable 502 and from the additional extension repeater 200. The reverse RF signal of the received through the reverse dedicated RF cable 502 is coupled to output to the coupler 132.

On the other hand, the additional extension repeater 200, unlike the embodiment of the present invention, the duplexer 212 is deleted, the forward dedicated RF cable 500 is attenuator 214 and the RF interface module 202 of the The low noise amplifier 216 is directly connected to the high power amplifier 204, and the coupler 210 is connected to the modem 226 while being connected to a reverse dedicated RF cable 502, and the attenuator 220. And a bandpass filter 206 side through which the reverse RF signal is introduced through the low noise amplifier 218.

In addition, the signal path of the reverse diversity signal is performed through a separate reverse diversity RF cable 504 as in the embodiment of the present invention.

In another embodiment of the present invention made as described above, the exchange of control information signals between the main repeater 100 and the additional expansion repeater 200 has been described to be possible through the reverse dedicated RF cable 502, but in the present invention, Without limitation, it is also possible to directly connect the main control units between each repeater with an RF cable, so as to exchange control information signals independently of the forward dedicated RF cable or the reverse RF cable.

In addition, the overall embodiment of the present invention made as described above describes a configuration configured to expand only one additional expansion repeater to the main repeater, the present invention is not limited to this, but at least two or more for the main repeater The configuration of the present invention can be applied to allow additional extension repeaters to be connected, and the configuration of the present invention can be applied even when connecting another additional extension repeater to an additionally extended repeater for the main repeater. It is possible to be there.

While specific embodiments of the present invention have been described and illustrated above, it will be apparent that the present invention may be embodied in various modifications by those skilled in the art. Such modified embodiments should not be understood individually from the technical spirit or the prospect of the present invention, but should fall within the claims appended to the present invention.

1 is a view showing an expansion configuration using a conventional cascade (main cascade) main repeater,

2 is a view showing the overall configuration of the expansion system of the optical repeater for wireless communication according to an embodiment of the present invention;

3 is a diagram showing the overall configuration of the expansion system of the optical repeater for wireless communication according to another embodiment of the present invention;

4 is a view showing the overall configuration of the expansion system of the optical repeater for wireless communication according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: main repeater, 102: optical module,

104, forward RF module, 106: reverse RF module,

108: 3-way divider, 110, 112, 118, 218, 222: low noise amplifier,

114,116,128,130,206,208: bandpass filter,

120,214,220,224: attenuator, 122,212: duplexer,

124,126: 2-way divider, 136,226: modem,

138,228: main control unit, 200: repeater for further expansion,

202: RF interface module, 204: high power amplifier,

300,400: forward / reverse common RF cable,

302,404,504: reverse diversity RF cable,

402: RF cable for control communication, 500: RF cable for forward only,

502: Reverse dedicated RF cable.

Claims (20)

Receives forward signals from the base station, radiates to its own installation area, transmits to the additionally extended repeater, and combines the backward signal from the additional expansion area received from the additionally extended repeater with the backward signal from its installation area. A main repeater for transmitting to the base station; The base station forward signal from the main repeater high power amplification with signal compensation and rated capacity to radiate to its own installation area, further expansion for filtering and signal compensation of the reverse signal received from its installation area to the main repeater Repeater; And And a connection cable connecting the main repeater and the further extension repeater to form a signal path of forward and reverse signals. The connecting cable includes a single forward reverse common RF cable for transmitting and receiving a forward RF signal from the main repeater and a reverse RF signal from the additional extended repeater through one cable; And a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater. delete The method of claim 1, The main repeater photoelectrically converts a forward optical signal from a base station into a forward RF signal, distributes the signal to a plurality of paths, and compensates the forward RF signal of one of the paths and transmits the signal to the additional extension repeater through the connection cable. And coupling a reverse RF signal from the additional extension repeater received through the connection cable with at least one reverse RF signal received from an installation area of the corresponding main repeater, and converting the reverse RF signal into a reverse optical signal for transmission to a base station. Done, And a control communication unit for exchanging control information signals for mutual control communication with the additional extension repeater. The method of claim 3, wherein The additional extension repeater performs signal compensation processing on a forward RF signal from the main repeater through the connection cable, a reverse RF signal and a reverse diversity signal received at an installation area of the corresponding additional extension repeater, and the main repeater. An RF interface module for exchanging control information signals for mutual control communication with a control communication unit of a; A high power amplifier for amplifying a forward RF signal through the RF interface module at a high output power according to a rated capacity; Extension of a wireless communication optical repeater comprising a band pass filter for band-pass filtering the reverse RF signal and the reverse diversity signal received from the installation area of the additional extension repeater, respectively, and output the band-pass filter to the RF interface module. system. The method according to claim 1 or 3 or 4, The single forward reverse common RF cable transmits and receives a control information signal for mutual control communication between the main repeater and the additional extended repeater as well as the forward RF signal and the reverse RF signal. Extension system. The method of claim 5, wherein The main repeater includes a modem for performing control communication with a modem of the additional expansion repeater through a duplexer, and a main control unit for exchanging control information with a main control unit of the additional expansion repeater through the modem. , The additional extension repeater may include: a coupler for coupling and outputting a forward RF signal through the single forward reverse common RF cable, a corresponding reverse extension RF signal for further extension, and a control information signal from a modem; A duplexer for designating and outputting a signal path of a forward RF signal and a corresponding backward extension RF signal for a further extension, a forward attenuator for compensating a signal level through a signal attenuation operation for a forward RF signal through the duplexer, and a forward attenuator A forward low noise amplifier for low noise amplifying a forward RF signal to the high power amplifier, a reverse low noise amplifier for low noise amplifying the reverse RF signal and a reverse diversity signal through a band pass filter, and each reverse RF signal through the reverse low noise amplifier; For reverse diversity signals Compensating the signal level through signal attenuation, a reverse RF signal is output to the duplexer, and a reverse diversity signal is output to the main repeater through the reverse diversity RF cable, and the modem of the main repeater through the coupler. And a modem for performing control communication, and a main control unit for exchanging control information with a main control unit of the main repeater via the modem. The method according to claim 1 or 3 or 4, The connecting cable further comprises a control communication cable for transmitting and receiving a control information signal for mutual control communication between the main repeater and the additional expansion repeater further extends the wireless communication optical repeater. The method of claim 7, wherein The main repeater includes a main control unit for exchanging control information with the main control unit of the additional expansion repeater through the control communication cable, The additional extension repeater may include: a coupler for coupling and outputting a forward RF signal through the single forward reverse common RF cable and a corresponding backward extension RF signal for the additional extension; a forward RF signal from the coupler and the corresponding extension; A duplexer for designating and outputting a signal path of a reverse RF signal of a repeater side; A forward low noise amplifier output to the high power amplifier, a reverse low noise amplifier for low noise amplifying the reverse RF signal and the reverse diversity signal through a band pass filter, and a signal for each reverse RF signal and the reverse diversity signal through the reverse low noise amplifier, respectively Attenuation Shows Signal Levels A reverse RF signal is output to the duplexer, and a reverse diversity signal is output to the main repeater through the reverse diversity RF cable, and the main control unit and control information of the main repeater are controlled through the control communication cable. An extension system for a wireless communication optical repeater, comprising a main control unit to be replaced. Receives forward signals from the base station, radiates to its own installation area, transmits to the additionally extended repeater, and combines the backward signal from the additional expansion area received from the additionally extended repeater with the backward signal from its installation area. A main repeater for transmitting to the base station; The base station forward signal from the main repeater high power amplification with signal compensation and rated capacity to radiate to its own installation area, further expansion for filtering and signal compensation of the reverse signal received from its installation area to the main repeater Repeater; And And a connection cable connecting the main repeater and the further extension repeater to form a signal path of forward and reverse signals. The connection cable, a forward dedicated RF cable for transmitting only the forward RF signal of the main repeater to the additional expansion repeater, A reverse dedicated RF cable for transmitting a reverse RF signal of the additional extension repeater to the main repeater; And a reverse diversity RF cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater. The method of claim 9, The main repeater includes a modem for performing control communication with the modem of the additional expansion repeater through the reverse dedicated RF cable, and a main control unit for exchanging control information with the main control unit of the additional expansion repeater through the modem. Including, The additional extension repeater may further include a coupler for coupling and outputting an additional extension repeater side reverse RF signal, a control information signal from a modem, and a signal attenuation operation for a forward RF signal through the forward dedicated RF cable. A forward attenuator for compensating signal levels, a low noise amplifier for low noise amplifying a forward RF signal through the forward attenuator, and outputting the signal to the high power amplifier, a low noise amplifying reverse RF signal and a reverse diversity signal through a band pass filter Compensating the signal level by attenuating the respective reverse RF signals and reverse diversity signals through the reverse low noise amplifier and outputting a reverse RF signal to the coupler, and a reverse diversity signal to the reverse diversity RF cable. Output to the main repeater via Is a reverse attenuator, a modem for performing control communication with the modem of the main repeater via the coupler, and a main control unit for exchanging control information with the main control unit of the main repeater through the modem Expansion system of communication optical repeater. Receives the forward optical signal from the base station through the optical cable, photoelectrically converts it into its own installation area, and transmits it to the additional extended repeater through a single forward / reverse common cable, and additional extended area received from the additional extended repeater The main repeater, which combines the reverse signal from the installation area with the reverse signal from its installation area, performs an optical conversion, transmits the optical signal to the base station through an optical cable, and performs an inter-control communication with an additional extended repeater through a single forward / reverse common cable. Wow; The base station forward signal from the main repeater is received through a single forward / reverse common cable, and high power amplified with signal compensation and rated capacity to radiate to its own installation area, and the reverse signal and reverse diversity received from its own installation area. Further expansion for filtering and signal-compensating signals and transmitting them to the main repeater via a single forward / reverse common cable and a reverse diversity cable, respectively, and for performing mutual control communication with the main repeater via a single forward / reverse common cable. A repeater; A single forward / reverse common cable for transmitting and receiving a forward signal from the main repeater, a backward signal from the additional extended repeater, and a control information signal for mutual control communication through one cable; And And a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater. The method of claim 11, And said single forward / reverse common cable and said reverse diversity cable are RF cables. Receives the forward optical signal from the base station through the optical cable, photoelectrically converts it to radiate to its installation area, and transmits it to the additional repeater through a single forward / reverse common cable, and additionally through a single forward / reverse common cable The reverse signal from the additional extended area received from the extended repeater is combined with the reverse signal from its own installation area, and then converted to all-optical and transmitted to the base station through the optical cable. A main repeater to perform; The base station forward signal from the main repeater is received through a single forward / reverse common cable, and high power amplified with signal compensation and rated capacity to radiate to its own installation area, and the reverse signal and reverse diversity received from its own installation area. An additional extension repeater for filtering and signal-compensating a signal and transmitting the signal to the main repeater through a single forward / reverse common cable and a reverse diversity cable, and performing mutual control communication with the main repeater through a control communication cable; A single forward / reverse common cable for transmitting and receiving a forward signal from the main repeater and a backward signal from the further extended repeater through one cable; A reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater; And And a control communication cable configured to transmit and receive a control information signal for mutual control communication between the main repeater and the additional extension repeater. The method of claim 13, And said single forward / reverse common cable, said reverse diversity cable and a cable for control communication are RF cables. Receives the forward optical signal from the base station through the optical cable, photoelectrically converts it to radiate to its installation area, and transmits it to the additionally extended repeater through the forward dedicated cable, and further expansion received from the additionally extended repeater through the reverse dedicated cable A main repeater, which combines a reverse signal from a local area with a reverse signal from its own installation area, performs an optical conversion, transmits the optical signal to the base station through an optical cable, and performs mutual control communication with an additional extended repeater through a reverse dedicated cable; Receives the base station forward signal from the main repeater through the forward dedicated cable to high power amplification with signal compensation and rated capacity to radiate to its own installation area, and filters the reverse signal and reverse diversity signal received from its own installation area. An additional expansion repeater for signal compensation and transmission to the main repeater through a reverse dedicated cable and a reverse diversity cable, and performing mutual control communication with the main repeater through a reverse dedicated cable; Forward only cable for transmitting only the forward signal of the main repeater to the additional expansion repeater; A reverse dedicated cable transmitting a reverse signal of the additional extension repeater to the main repeater and transmitting and receiving a control information signal for mutual control communication; And And a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater to the main repeater. The method of claim 15, And said forward dedicated cable, said reverse dedicated cable and said reverse diversity cable are RF cables, respectively. It is connected through a specific extension cable and a repeater for further expansion, photoelectric conversion of the forward optical signal from the base station to the forward RF signal to distribute to a plurality of paths, the signal of the forward RF signal of any one of the paths to the connection Transmits the reverse RF signal from the additional extension repeater received through the connection cable to at least one reverse RF signal received from the installation area of the corresponding main repeater and transmits the reverse optical signal through the cable. All-optical conversion of the signal to the base station, The connection cable may include a single forward reverse common RF cable for transmitting and receiving a forward RF signal and a reverse RF signal through one cable; And And a reverse diversity cable for transmitting a reverse diversity signal from the additional extension repeater. Connected to the main repeater via a connecting cable, the base station forward RF signal from the main repeater is high-power amplified with signal compensation and rated capacity, radiated to its own installation area, and receives a reverse RF signal and a reverse direction received from its installation area. Diversity signals are filtered and signal compensated, respectively, and transmitted to the main repeater via a connecting cable. The connection cable may include a single forward reverse common RF cable for transmitting and receiving a forward RF signal and a reverse RF signal through one cable; And And a reverse diversity cable for transmitting the reverse diversity signal to the main repeater. It is connected through a connection cable with a specific additional expansion repeater, photoelectric conversion of the forward optical signal from the base station to the forward RF signal to be distributed in a plurality of paths, and the signal is compensated for the forward RF signal of any one path of the connection Transmits the reverse RF signal from the additional extension repeater received through the connection cable to at least one reverse RF signal received from the installation area of the corresponding main repeater and transmits the reverse optical signal through the cable. All-optical conversion of the signal to the base station, The connection cable may include a forward only RF cable for transmitting only a forward RF signal to the additional extension repeater; A reverse dedicated RF cable for transmitting a reverse RF signal of the additional extension repeater; And And a reverse diversity RF cable for transmitting a reverse diversity signal from the additional extension repeater. Connected to the main repeater via a connecting cable, the base station forward RF signal from the main repeater is high-power amplified with signal compensation and rated capacity, radiated to its own installation area, and receives a reverse RF signal and a reverse direction received from its installation area. Diversity signals are filtered and signal compensated, respectively, and transmitted to the main repeater via a connecting cable. The connection cable, a forward dedicated RF cable for transmitting only the forward RF signal of the main repeater, A reverse dedicated RF cable for transmitting the reverse RF signal to the main repeater; And a reverse diversity RF cable for transmitting the reverse diversity signal to the main repeater.

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