KR20180024059A - Digital optical repeating system for trs/fire fighting wireless communication - Google Patents

Abstract

The present invention solves a problem of a conventional wireless communication system for TRS/firefighting. The present invention relates to a digital optical relay system capable of transmitting and receiving optical signals for a wireless communication for TRS/firefighting. According to the digital optical relay system for a wireless communication for TRS/firefighting of the present invention, since a TX optical signal and an RX optical signal can be transmitted and received through one fiber, construction of separate TX and RX tracks is not required and a direct communication between terminals located at different floors of a building is possible. The digital optical relay system for a wireless communication for TRS/firefighting comprises a plurality of remote optic units (ROU) and a main hub unit (MHU).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital optical repeater system for TRS /

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital optical repeater system for TRS / fire-fighting wireless communication, and more particularly, to a digital optical repeater system capable of transmitting or receiving optical signals for TRS / fire-fighting wireless communication.

TRS / fire-fighting wireless communication system means that when a coaxial cable is extended to transmit an RF signal in TRS / fire-fighting wireless communication, if the signal level is lowered due to the loss of the line, (AMP) on a communication path or line that enables service and coaxial cable extension by amplifying the signal level to compensate for the loss.

FIG. 1 is a schematic view of a fire extinguishing system using a conventional TRS / fire-fighting wireless communication system.

Conventional fire extinguishing systems using a TRS / fire-fighting wireless communication system use coaxial cables as communication lines, and transmission (TX) lines and reception (RX) lines are formed independently from each other, , Radios 101 and 103) and a repeater 110 of an emergency room or a control station in a building.

As shown in FIG. 1, since the fire extinguishing system using the conventional TRS / fire-fighting wireless communication system uses a coaxial cable as a communication line, there is a problem that signal loss is large.

In addition, since the transmission line and the reception line are separately constructed, there is a disadvantage that the system is costly in configuration, and direct communication between mobile terminals located in different layers inside the building is impossible.

FIG. 2 is a view showing the configuration of FIG. 1 in more detail to explain a problem of a conventional TRS / fire-fighting wireless communication system.

Fig. 2 shows the line configuration of the inside of the building in Fig. 1 in more detail, and is a line configuration of two layers (A layer and B layer) inside the building.

The A and B layers are not necessarily the same layer of the building, and the A and B layers do not necessarily have to be continuous layers of the building. That is, layer A may be a basement layer and layer B may be any layer (e.g., 14 or 15 layers) on the ground.

The prior art PLA system includes a transceiver (115 in FIG. 1) and a basement (e.g., 220 in FIG. 2) within the service area of the outdoor transceiver antenna (116 in FIG. 1) 1) of the repeater (110 of FIG. 1), while the service between the transceiver (110 of FIG. 1) and the transceiver There is a problem that two or more radios (for example, the transceiver 210 and the transceiver 220) in the ground layer (layer B) and the ground layer (layer A) can not directly communicate with each other.

In the PLA communication system of the related art, a signal inputted through an RX input port 230 is output through a PLA inner block, and the output signal is distributed in a signal distributor 205 to be connected to a PLA 233 cascaded And only in one direction via line 232 for service.

The RX port configuration in the A layer is similar to the RX port configuration in the B layer. That is, it is configured to be transmitted only in one direction.

In the TX path, a TX signal 241 transmitted from the transceiver 210 and a signal 242 of an upper connected PLA are combined and a signal input through the input port 243 is output through the inner block.

The output signal is delivered to the cascaded PLA 246.

Thus, the conventional power line amplifier (coaxial cable installed) transmits signals only in a single direction.

The RX antennas 232 and 236 and the TX antennas 241 and 245 are provided to serve the inside of the floor but the transceivers 220 and 210 in the different layers inside the building can not directly communicate with each other Can not.

The signal transmitted through the RX antenna 232 or 236 is transmitted to the radio in each layer only the signal output from the repeater (110 in FIG. 1) to the RX line.

The radio signal received via the TX antenna 241 or 245 of each layer is output to the TX transmission antenna (116 of FIG. 1) of the Power Line Amp and the repeater (110 of FIG. 1) .

Thus, direct communication between radios located between different layers in a building is not possible, because there is no direct path to transmit the signal. Thus, there is a problem in that direct communication between mobile terminals located in different layers in a building in a conventional TRS / fire-fighting wireless communication system is impossible.

It is an object of the present invention to provide a digital optical repeater system for TRS / fire-fighting wireless communication using optical signals, which has been proposed in order to solve the problems of the conventional TRS / fire-fighting wireless communication system.

According to an aspect of the digital optical repeater system for TRS / fire-fighting wireless communication of the present invention,

A digital optical repeater system for TRS / fire-fighting wireless communications,

Converts a TX TRS / fire-extinguishing radio communication signal received from the first terminal into a TX optical signal, or outputs the received RX optical signal or the TX optical signal to an RX TRS / A plurality of remote optical units (ROUs)

And transmitting the TX optical signal received from the remote optical unit to the third terminal by converting the TX optical signal into the TX TRS / fire protection wireless communication signal, or transmitting the RX TRS / And a main hub unit (MHU) for switching to the remote optical unit.

Preferably,

And each of the remote optical units is installed in a different layer of the building.

Preferably,

Wherein the first terminal is connected to a first remote optical unit installed on the A layer of the building and the second terminal is connected to a second remote optical unit installed on the B floor of the building, And the terminal is capable of direct communication through the first remote optical unit and the second remote optical unit.

Preferably,

The second remote optical unit converts the TX TRS / fire wireless communication signal of the second terminal received from the second terminal into a TX optical signal of the second terminal,

The first remote optical unit converts the TX optical signal of the second terminal into a wireless communication signal for RX TRS / fire for the second terminal and transmits it to the first terminal,

And performs direct communication between the second terminal and the first terminal.

Preferably,

Each of the remote optical units and the main hub units

A WEST port including a first optical module for transmitting or receiving the TX optical signal as a first wavelength optical signal and the RX optical signal as a second wavelength optical signal; And

And an EAST port including a second optical module for transmitting or receiving the RX optical signal as the first wavelength optical signal and the TX optical signal as the second wavelength optical signal.

Preferably,

Each of the remote optical units and the main hub units

And a third optical module for transmitting or receiving the RX optical signal as the first wavelength optical signal and the TX optical signal as the second wavelength optical signal, .

Preferably,

And the interconnection of the plurality of remote optical units is performed through the connection of the west port of the first remote optical unit and the east port of the second remote optical unit.

Preferably,

The plurality of main hub units are interconnected through a connection between a west port of the first main hub unit and an east port of the second main hub unit.

Preferably,

And the connection between the main hub unit and the remote optical unit is made through a branch port of the main hub unit or a connection between the east port and the west port of the remote optical unit.

Preferably,

Each of the remote optical units and the main hub units

Converts the TX TRS / fire-fighting wireless communication signal into the TX optical signal,

And an RF transceiver module for converting the RX optical signal into the RX TRS / RF communication signal.

Preferably,

The RX optical signal may further include an FM signal in addition to the RX TRS / wireless communication for the fire.

According to the digital optical repeater system for TRS / fire-fighting wireless communication of the present invention, there is an advantage that the loss of a bar signal transmitted through an optical fiber, rather than a coaxial cable, is small.

According to the digital optical relay system for TRS / fire-fighting wireless communication of the present invention, it is possible to transmit or receive the TX optical signal and the RX optical signal through one fiber, so there is no need to construct a separate TX line and RX line There are advantages.

According to the digital optical repeater system for TRS / fire-fighting wireless communication of the present invention, it is possible to directly communicate terminals located in different layers of a building.

1 is a view conceptually showing a line configuration of a conventional PLA communication system.
FIG. 2 is a view for explaining a problem that direct communication in the building inside the building is impossible in the fire fighting communication system using the PLA communication system of FIG. 1.
FIG. 3 is a schematic diagram of a digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention.
4 is a schematic view illustrating a network connection method of a digital optical repeating system for TRS / fire fighting wireless communication according to the present invention.
5 is a view for explaining the operation of an RF transceiver for converting an optical signal-electrical signal or an electrical signal-optical signal in a digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention.
6 is a diagram for explaining a signal interface between an MHU and an ROU of a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.
7 is a view for explaining a signal interface through a connection network of a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.
FIG. 8 conceptually illustrates the transmission of a downlink / TX signal using a digital optical repeating system for TRS / fire fighting wireless communication according to the present invention.
FIG. 9 is a diagram conceptually illustrating the transmission of an uplink / TX signal using a digital optical repeating system for TRS / fire fighting wireless communication according to the present invention.
FIG. 10 conceptually illustrates the transmission of a downlink / RX signal using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.
FIG. 11 is a diagram conceptually illustrating the transmission of an uplink / RX signal using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

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

In the present invention, when the coaxial cable is extended to transmit an RF signal from a repeater to a terminal or from a terminal to a repeater in a TRS / fire-fighting wireless communication, the level of the signal is low due to the loss of the line (AMP) on a communication path or line that enables service and coax extension of the cable by amplifying the RF signal level in the middle of the ground coaxial cable to compensate for losses.

Although the TRS / fire fighting communication system according to an embodiment of the present invention has been disclosed as an embodiment of the TRS / fire fighting wireless communication system in the present invention, it is an obvious example that the present invention can be utilized for other purposes.

The TX signal in the present invention collectively refers to transmission signals of one or more mobile terminals, and the TX signal is configured to be transmitted from a mobile terminal to a remote optical unit (ROU). However, the TX optical signal at the main hub unit (MHU) refers to an optical signal transmitted from the remote optical unit (ROU) to the main hub unit (MHU), and the TX RF signal is transmitted from the MHU to the mobile terminal RF signal.

The RX signal in the present invention is configured to be transmitted from a remote optical unit (ROU) to one or more mobile terminals. The RX optical signal at the main hub unit (MHU) refers to an optical signal transmitted from the MHU to the ROU, and the RX RF signal refers to a signal transmitted from the mobile terminal to the MHU.

The present invention is characterized in that a conventional TRS / fire-fighting wireless communication system for radio communication for fire fighting is configured as a digital optical relay system.

FIG. 3 is a schematic diagram of a digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention.

A digital optical repeater system for TRS / fire protection wireless communication according to the present invention includes a plurality of remote optical units (ROUs) 311, 321, 341, and 351 and a plurality of main hub units (MHU) (331).

The MHU (Main Hub Unit) receives the signal of the high quality TRS / RF communication frequency of the external and internal and transmits the signal converted into the optical signal to the ROU.

The ROU (Remote Optic Unit) serves to transmit the signals received from the MHU to the shaded area in the form of optical dispersion in the TRS / RF communication frequency.

Although FIG. 3 includes one MHU for the sake of explanation, it may be composed of a plurality of MHUs (see FIG. 7).

FIG. 3 is a block diagram illustrating a terminal 310 located on a floor B of a building 300 using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention. The terminals 310, 320, 340, And how the direct communication with the terminal 330 located nearby is possible.

In the present invention, the TX TRS / fire-fighting wireless communication signal and the RX TRS / fire-fighting wireless communication signal are RF signals of a specific frequency other than optical signals.

However, the line configuration between a plurality of ROUs, between a plurality of MHUs, and between ROUs and MHUs is configured to be composed of optical fibers, so that optical signals are transmitted and / or received.

ROU 311 converts the TX TRS / fire wireless communication signal (signal 313 on coaxial cable) received from first terminal 310 into TX optical signal 312 and outputs it. The TX optical signal 312 represents an optical signal transmitted between the ROU # 2 311 and the ROU # 1 321.

The ROU 321 receives the TX optical signal 322 and converts it to a RX TRS / fire wireless communication signal (signal 324 on the coaxial cable) and transmits it to the second terminal 320. The TX optical signal 322 represents the optical signal transmitted from the ROU # 2 311.

 The ROU 341 and the ROU 351 operate similarly to the ROU 321 to receive the TX optical signals 342 and 352 and convert them to the RX TRS / And transmits it to the terminal 350.

The MHU 331 converts the TX optical signal 332 received from the remote optical unit 311 into a TX TRS / fire wireless communication signal (signal 333 on the coaxial cable) and transmits it to the third terminal 330 or 335 do.

The MHU 331 also converts the RX TRS / fire wireless communication signal (signal 334 on the coaxial cable) received from the third terminal 330 or 335 to an RX optical signal (not shown) 311.321, 341, and 351, respectively.

The MHU 331 receives an RF signal of a good TRS / fire-fighting wireless communication frequency received from the outdoor terminal 330 and the terminal 335 in the disaster prevention room, converts the RF signal into an optical signal after digital signal processing, . The MHU receives each ROU TX signal and receives signals from the terminal 330 outside the room and the terminal 335 within the disaster prevention room.

The ROUs 311, 321, 341, and 351 convert the optical signal transmitted from the MHU 331 into an RF signal, and provide a service of a TRS / fire-fighting wireless communication frequency signal to each terminal after digital signal processing.

The TX signal transmitted from ROU # 2 311 is transmitted to the RX Path of ROU # 1, ROU # 3 ... ROUU # 10, and transmitted to the terminal. This enables a direct communication service between ROU and ROU.

The line amplifier (Line AMP) shown in FIG. 3 amplifies a TX TRS / fire-extinguishing wireless communication signal or an RX TRS / fire-extinguishing wireless communication signal, and transmits and receives a service signal of the terminal by connecting TX reception and RX reception antennas.

The coupler connects the TX TRS / RF communication signal or the RX TRS / RF communication signal to the amplifier, coupler or antenna at the rear stage without a loss of distribution, and transmits and receives the service signal of the terminal by connecting TX reception and RX transmission antenna .

4 is a schematic view illustrating a network connection method of a digital optical repeating system for TRS / fire fighting wireless communication according to the present invention.

FIG. 4 illustrates a network configuration for transmitting an optical signal between the ROU and the MHU shown in FIG. 3. The RF signal transmission section between the ROU and the terminal and the RF signal transmission section between the MHU and the terminal are omitted.

Each of the remote optical units 440, 450 and 460 and the main hub units 410, 420 and 430 transmit or receive the TX optical signal as the first wavelength optical signal and the RX optical signal as the second wavelength optical signal, (EAST) comprising a second optical module for transmitting or receiving an RX optical signal as a first wavelength optical signal and a TX optical signal as a second wavelength optical signal, Port.

Additionally, each of the remote optical units 450 and 460 and the main hub units 410, 420, 430 and 440 may transmit the RX optical signal as a first wavelength optical signal and the TX optical signal as a second wavelength optical signal Or a branch (BRANCH) port including a third optical module to receive the third optical module.

The digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention may have expandability including a branch port.

4 is a diagram showing a configuration between an MHU, an ROU, and an MHU and an ROU in order to transmit a seamless optical signal.

A plurality of remote optical units are made through the connection 452 of the east port of the remote optical unit 450 and the west port 461 of the remote optical unit 460 as an example of the interconnection.

The interconnections of the plurality of main hub units are made through connection of the west port 421 of the main hub unit 420 and the east port 412 of the main hub unit 410, as shown in FIG. Through the connection of the west port 431 of the main hub unit 430 and the east port 422 of the main hub unit 420. Through the connection of the west port 441 of the remote optical unit 440 and the east port 432 of the main hub unit 430.

As shown in FIG. 4, the MHU and the ROU can be extended between a plurality of MHUs and through the connection of the Eastport-Westport.

4 shows an example of further expansion of the remote optical unit 450 through the branch port 423 of the main hub unit 420. [

That is, the additional ROU 450 and the ROU 460 are connected through the branch port 423 of the main hub unit 420.

Additional extended ROUs 450 and 460 are connected between the east-west ports. That is, through the connection between the west port 461 of the remote optical unit 460 and the east port 452 of the remote optical unit 450.

All ROUs 450 and 460 must be connected to the west port and synchronize the reference clock from the west port to the clock data recovery (CDR).

MHU can select master mode or slave mode. In master mode, it operates based on internal clock. In slave mode, it can select west / east port to select reference clock.

There should be only one mast device in every network and the other device must be synchronized to the master device via the CDR. It is also selected based on the west / east direction according to the setting position of the master MHU.

The first wavelength optical signal in the connection network configuration may have a wavelength of 1510 nm and the second wavelength optical signal may have a wavelength of 1570 nm. Each wavelength of the optical signal can be configured differently as needed and is not fixed at 1510 nm and 1570 nm, but is merely an example.

5 is a view for explaining the operation of an RF transceiver for converting an optical signal-electrical signal or an electrical signal-optical signal in a digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention.

5 is a view conceptually showing the operation of an RF transceiver module for converting an optical signal-electrical signal (RF signal) or an electrical signal (RF signal) -optical signal between the ROU and the terminal, and between the MHU and the terminal.

The RF transceiver module shown in FIG. 5 is specifically incorporated in the transmitter shown in FIG. 5A and the receiver shown in FIG. 5B, and is included in each ROU and each MHU shown in FIG. 1 .

Each of the remote optical units and the main hub units includes an RF transceiver module that converts a TX TRS / fire wireless communication signal into a TX optical signal and converts the RX optical signal into a RX TRS / fire wireless communication signal.

FIG. 5A shows a transmitter performing a process of converting a TX TRS / fire-fighting wireless communication signal into a TX optical signal at an arbitrary ROU stage.

The ADC 511 samples and converts the TX TRS / wireless communication signal transmitted from the terminal into a digital signal.

The FPGA 514 includes a decimation unit 512 and an optical framer 513 to convert a digital signal into an optical signal and output the optical signal.

5B is a view schematically showing the operation of a receiver by converting an optical signal into an electric signal or an RF signal and outputting the signal.

FIG. 5B performs the reverse process of FIG. 5A. Specifically, the FPGA 524 converts the optical signal into a digital signal, and the DAC 521 converts the digital signal into an analog signal to output an RF signal.

6 is a diagram for explaining a signal interface between an MHU and an ROU of a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

6 is a diagram specifically showing signals transmitted and / or received on an optical fiber, which is an optical line, between the MHU 610 and the ROU 620. As shown in Fig.

The signals shown in Fig. 6 are not transmitted through the respective lines, but are transmitted through one optical fiber, which is one optical line.

The downlink signals transmitted from the MHU 610 to the ROU 620 include TRS_DLs 611 and 621 and 400M_DLs 613 and 623.

The uplink signals transmitted from the ROU 620 to the MHU 610 also include TRS_DLs 625 and 615 and 400M_DLs 627 and 617.

The TRS (Tunked Radio Service) signal is a frequency signal that can be provided by each government agency and can be linked to a network operated by public organizations such as police, medical, railroad, and national disaster safety communication network.

The 400M signal is a frequency signal used for radio communication radio radios and it is a frequency signal allocated to enable wireless communication between the fire brigade and the fire brigade between the ground and underground when a fire occurs inside the building from 440MHz to 450MHz (BW: 10MHz) .

7 is a view for explaining a signal interface through a connection network of a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

FIG. 7 is a diagram showing an expanded signal configuration diagram of the digital optical repeater system for TRS / fire-fighting wireless communication shown in FIG.

7, the ROU # 1 730 and the ROU # 2 750 are connected to the lower layer of the MHU # 1 710 and the ROU # 3 730 and the ROU # ROU # 4 790 is connected.

The FM signal added in FIG. 7 is an FM radio frequency that broadcasts a disaster in the event of a disaster such as a typhoon or an earthquake in a radio frequency band of 88 MHz to 108 MHz (BW: 20 MHz).

Unlike the signals shown in FIG. 6, each of the signals shown in FIG. 7 indicates a state where signals output at the lower end are combined.

Specifically, the signal transmitted from the MHU # 1 710 to the ROU # 1 730 is a signal including the signal transmitted to the MHU # 2 720.

The signals transmitted from the ROU # 1 730 to the ROU # 2 750 are signals from the MHU # 1 710 to the ROU # 1 730 and the signals TRS_DL 713 and 733 and 400M_DL 715 and 735 ) May include a signal to which a signal transmitted from a terminal connected to the ROU # 1 730 is added.

The same is true for the uplink signal. That is, a signal transmitted from the terminal connected to the ROU # 1 730 to the signals (TRS_DLs 713 and 733 and 400M_DLs 715 and 735) transmitted from the ROU # 1 730 to the MHU # Lt; / RTI > signal.

Each ROU may include a newly added signal from a directly connected terminal and forward it to another ROU and / or MHU, and each MHU may also include a newly added signal from a directly connected terminal and forward it to a lower ROU and / or another MHU .

However, the FM signal transmits the same signal to the ROU # 1, ROU # 2, ROU # 3, and ROU # 4 in the unidirectional signal.

FIG. 8 conceptually illustrates the transmission of a downlink / TX signal using a digital optical repeating system for TRS / fire fighting wireless communication according to the present invention.

8 to 11, the downlink refers to the direction of the signal transmitted from the MHU to the ROU, and the uplink refers to the direction of the signal to be transmitted from the ROU to the MHU.

Also, the TX signal means a signal transmitted from a terminal to an ROU, from a ROU to an MHU, and from an MHU to a terminal, and the RX signal means a signal transmitted from a terminal to an MHU, from an MHU to an ROU, and from an ROU to a terminal.

In FIG. 8, the types of signals transmitted on each line are not shown in detail for the sake of clarity. The types of signals transmitted on the line shown in Fig. 8 are the same as those shown in Fig.

7, which shows a downlink signal interval transmitted from the MHU 810 to each ROU.

The FM signal in FIG. 7 transmits the MHU signal in one direction and the same signal to ROU # 1, ROU # 2, and ROU # 3, respectively.

The TRS / 400M signal adds a signal (signal) output from the MHU 810 as a bi-directional signal (signal) and a signal (signal A) generated from the terminal A of the ROU # It is a signal.

(Signal A) of the ROU # 2 850 and the signal (signal A) generated at the terminal A of the ROU # 1 830 and the signal (signal A) output from the terminal B of the ROU # And the generated signal (signal B) is an ADD signal.

Therefore, the signal received by the ROU # 3 870 is a signal obtained by ADU of the MHU (a), ROU # 1 (A), and ROU # 2 (B).

8, a terminal connected to each ROU using a digital optical repeater for TRS / fire protection wireless communication according to the present invention transmits its TX transmission signal to an RX Path to the terminal.

The TRS / 400M signal included in the TX signal in FIG. 8 can combine the signals of the MHU / ROU # 1 / ROU # 2 / ROU # 3, and transmit the signals in the downlink direction.

FIG. 9 is a diagram conceptually illustrating the transmission of an uplink / TX signal using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

In FIG. 9, the types of signals transmitted on each line are not shown in detail for the sake of clarity. The type of the signal transmitted on the line shown in FIG. 9 is the same as that shown in FIG. 7, except that the FM signal is not included.

Since the FM signal is transmitted only in the downlink direction from the MHU to the ROU, it is not included in the signal transmitted from the ROU to the MHU.

7, and shows a TX signal period transmitted from each ROU to the MHU 910. As shown in FIG.

Therefore, the signal transmitted on each line in Fig. 9 is the TRS / 400M signal.

The TRS / 400M signal is a bidirectional signal, and a signal (ADD) is a signal obtained by ADDing a signal received from the ROU # 3 970 and a signal generated from the terminal C of the ROU # 3 970 (signal C).

(Signal B) is a signal obtained by ADDing a signal (signal B) output from ROU # 3 970 and a signal (signal B) generated by terminal B of ROU # 2 950.

(Signal A) is a signal obtained by ADD the signal (signal B) output from ROU # 1 950 and the signal (signal A) generated from terminal A of ROU # 1 930. As a result, (signal A) is a signal obtained by ADDing both (signal D) and (signal B) and signal (signal A) output from terminal A. [

9, the terminal connected to each ROU can transmit its TX transmission signal to the MHU by using the digital optical repeater system for TRS / fire protection wireless communication according to the present invention.

The TRS / 400M signal included in the TX signal in FIG. 9 can transmit signals output from ROU # 3 => ROU # 2 => ROU # 1 in an uplink direction to the MHU.

FIG. 10 conceptually illustrates the transmission of a downlink / RX signal using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

In FIG. 10, the FM signal transmits the MHU signal in one direction to the ROU # 1, the ROU # 2, and the ROU # 3, respectively, with the same signal.

The TRS / 400M signal drops a signal (signal A) transmitted to the terminal A of the ROU # 1 1030 from the signal (signal) output from the MHU 1010 as a bidirectional signal (signal) It is a signal.

(Signal A) from the signal (signal) output from the MHU 1010 to the terminal B of the ROU # 2 1050 to the signal (signal A) transmitted to the terminal A of the ROU # And the transmitted signal (signal B), respectively.

From the contents described with reference to FIG. 10, each terminal can receive a signal directly from the MHU using the digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention.

FIG. 11 is a diagram conceptually illustrating the transmission of an uplink / RX signal using a digital optical repeater system for TRS / fire fighting wireless communication according to the present invention.

Therefore, the signal transmitted on each line in Fig. 11 is the TRS / 400M signal.

The TRS / 400M signal is a signal obtained by DROPing a signal (signal C) transmitted from the ROU # 3 1170 to the terminal C of the ROU # 3 1170 as a bidirectional signal.

(Signal B) is a signal obtained by DROPing the signal (signal B) transmitted to the terminal B of the ROU # 2 1150 from the signal (signal B) output from the ROU # 3 1170.

(Signal A) is a signal obtained by DROPing a signal (signal A) transmitted from the signal (signal B) output from the ROU # 2 1150 to the terminal A of the ROU # 1 1030. As a result, (signal A) is a signal which is DROP (signal B) and (signal B) and (signal A), respectively.

11, a terminal connected to each ROU using a digital optical repeater for TRS / fire protection wireless communication according to the present invention transmits its RX reception signal to a TX Path from the terminal.

8 to 11, it can be seen that the digital optical repeater system for TRS / fire-fighting wireless communication according to the present invention can directly communicate between ROUs, that is, each terminal connected to the ROU and each MHU .

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. It will be clear to those who have.

Claims (11)

A digital optical repeater system for TRS / fire-fighting wireless communications,
Converts a TX TRS / fire-extinguishing radio communication signal received from the first terminal into a TX optical signal, or outputs the received RX optical signal or the TX optical signal to an RX TRS / A plurality of remote optical units (ROUs); And
And transmitting the TX optical signal received from the remote optical unit to the third terminal by converting the TX optical signal into the TX TRS / fire protection wireless communication signal, or transmitting the RX TRS / And a main hub unit (MHU) for switching to the remote optical unit and outputting it to the remote optical unit. The method according to claim 1,
Wherein each of the remote optical units is installed in a different layer of a building. The method of claim 2,
Wherein the first terminal is connected to a first remote optical unit installed on the A layer of the building and the second terminal is connected to a second remote optical unit installed on the B floor of the building, Wherein the terminal is capable of direct communication through the first remote optical unit and the second remote optical unit. The method of claim 3,
The second remote optical unit converts the TX TRS / fire wireless communication signal of the second terminal received from the second terminal into a TX optical signal of the second terminal,
The first remote optical unit converts the TX optical signal of the second terminal into a wireless communication signal for RX TRS / fire for the second terminal and transmits it to the first terminal,
Wherein the first terminal and the second terminal perform direct communication between the second terminal and the first terminal. The method according to claim 1,
Each of the remote optical units and the main hub units
A WEST port including a first optical module for transmitting or receiving the TX optical signal as a first wavelength optical signal and the RX optical signal as a second wavelength optical signal; And
(EAST) port including a second optical module for transmitting or receiving the RX optical signal as the first wavelength optical signal and the TX optical signal as the second wavelength optical signal. Digital Optical Relay System for TRS / Fire Radiation. The method of claim 5,
Each of the remote optical units and the main hub units
And a third optical module for transmitting or receiving the RX optical signal as the first wavelength optical signal and the TX optical signal as the second wavelength optical signal. , TRS / digital optical repeater system for fire fighting wireless communication. The method of claim 5,
Wherein the interconnection of the plurality of remote optical units is performed through a connection between a west port of the first remote optical unit and an east port of the second remote optical unit. The method of claim 5,
Wherein the plurality of main hub units are interconnected through a connection between a west port of the first main hub unit and an east port of the second main hub unit. The method of claim 8,
Wherein the connection between the main hub unit and the remote optical unit is made through a branch port of the main hub unit or a connection between the east port and the west port of the remote optical unit. Optical relay system. The method according to claim 1,
Each of the remote optical units and the main hub units
Converts the TX TRS / fire-fighting wireless communication signal into the TX optical signal,
And an RF transceiver module for converting the RX optical signal into the RX TRS / fire signal for wireless communication. The method according to claim 1,
Wherein the RX optical signal further comprises an FM signal in addition to the RX TRS / fire-fighting wireless communication.

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