KR101604813B1 - Power line amp communication system and communication method using therof - Google Patents

Abstract

The present invention relates to a power line amp (PLA) communications system and a communications method using the same. More specifically, a system enables communications between mobile equipment disposed in different stories in a building in a PLA communications system for individually performing transmission (TX) and reception (RX/FM) through a separate line route. According to the PLA communications system and communications method using the same of the present invention, without construction of a separate wire for communications between radio transceivers disposed in different stories in a building, direct communications between radio transceivers are possible just by adding a interformational service module consisting of a plurality of distributors and a coupler.

Description

TECHNICAL FIELD [0001] The present invention relates to a PLA communication system and a communication method using the PLA communication system.

The present invention relates to a PLA communication system and a communication method using the same. More particularly, the present invention relates to a PLA communication system for transmitting and receiving (TX / RX / FM) To a system and a communication method for enabling communication between terminals (Mobile Equipment).

PLA (Power Line Amp) communication means that when a coaxial cable is extended to transmit an RF signal in a mobile communication (including a TRS), the level of the signal 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 RF signal level to compensate for losses.

1 is a schematic view of a fire control system using a conventional PLA communication system.

A fire control system using a conventional PLA communication system uses a coaxial cable as a communication line, and a transmission (TX) line and a reception (RX) line are formed independently from each other and a mobile terminal (for example, 101, 102, 103, and 104) and the repeater 110 of the outdoor disaster prevention room or the control station.

2 is a view schematically showing a communication system configuration of a conventional PLA communication system.

Figure 2 (a) shows the TX portion of the PLA communication system, and Figure 2 (b) shows the RX / FM portion of the PLA communication system.

FIG. 2 is a view showing a block diagram of the fire fighting system of FIG. 1 in more detail with a PLA communication system. FIG.

The TX path (FIG. 2 (a)) of the PLA communication system of the conventional fire fighting PLA communication system includes a TX signal transmitted from a mobile terminal (for example, a transceiver) 242 and 243 / gain controller 244 using bandpass filters 231 and 232, and a signal processor 242 and 243, respectively. And amplifies and outputs the signal to an appropriate level using the feedback loop 245 (220).

The output signal is transmitted to the PLA cascaded in the downstream direction to the repeater and the repeater, and a signal is transmitted to the transceiver 115 where the repeater 110 is installed, The communication between the repeater 110 and the mobile terminal (for example, the transceivers 101, 102, 103 and 104) is serviced.

The signal amplifiers 241, 242 and 243 compensate for the signal attenuation or signal loss 251, 252 and 253 experienced by the signal as it travels along the coaxial cable 120 which is the signal path, .

In particular, the coupler 261 immediately before the TX output 220 stage may be configured to detect a signal for performing gain adjustment by dividing and feeding back a part of the output signal. Coupler 261 is used to separate a portion of the signal and feed back a portion of the signal to gain adjuster 244. [

The feedback signal is employed for the configuration for detecting the level of the current signal to adjust the level of the output signal. The coupler 261 further includes an isolator for avoiding interference due to reflection of the signal at the output terminal, .

The RX / FM path (FIG. 2 (b)) of the prior art PLA shown in FIG. 2 (b) shows that the input is an RX signal and an FM signal output from the PLA connected to the repeater output or cascade The PLA TX configuration of FIG. 2 (a) differs from the upstream direction of the signal and the downstream direction of the signal in that the signal is transmitted to the PLA connected to the cascade and the signal is transmitted to each floor of the building and transmitted to the radio or mobile terminal. Are opposite to each other.

That is, the downstream signal direction in the TX signal configuration of FIG. 2 (a) refers to the direction of the signal from the transceiver to the repeater (110 in FIG. 1) and the upstream signal direction corresponds to the direction of the signal from the repeater 110 to the transceiver Quot;

Conversely, the downstream signal direction in the RX / FM signal configuration of FIG. 2 (b) refers to the direction of the signal from the repeater 110 to the transceiver, and the upstream signal direction refers to the direction of the signal from the transceiver to the repeater.

Also, it differs from the TX signal configuration of FIG. 2 (a) in that it is divided into an RX path and an FM path according to a signal.

272, 274, 2110 and 2111 / gain adjusters 273 and 2112 and the feedback loop 262. However, it should be noted that performing filtering using band pass filters 261, 262, 2010, (A) in that the signal is amplified and output (2520) at an appropriate level using the amplifiers 295 and 2410.

It is also the same that the feedback loop is formed by using the couplers 291 and 2310 to branch the signal for gain control.

FIG. 3 is a view showing the configuration of FIG. 2 in more detail in order to explain a problem of a conventional PLA communication system.

Fig. 3 shows the line configuration inside 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., 320 in FIG. 3) within a building within the service range 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 radio 310 and the radio 320) 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 330 input through the RX / FM input port is output through a building block, and the output signal is distributed to provide a cascaded PLA 333 and a service inside the floor Lt; RTI ID = 0.0 > 332 < / RTI > In the A layer, the RX / FM Port configuration in the B layer is similar. That is, it is configured to be transmitted only in one direction.

Also, the TX path is a combination of the TX signal 341 transmitted from the transceiver 310 and the signal 342 of the upper connected PLA, and a signal input through the input port is output through the inner block, and the output signal is cascade-connected PLA < / RTI >

The power line amplifier of the prior art transmits a signal only in one direction (direction of RX signal: 330 -> 331 or 330 -> 334 or 330 -> 335 and direction of TX signal: 341 - > 344 or 344 -> 346 or 342 -> 346).

The RX antennas 332 and 336 and the TX antennas 341 and 345 are installed to serve the inside of the floor but the transceivers 320 and 310 between the ground floor and the ground floor directly communicate with each other I can not.

The signal transmitted through the RX antenna 332 or 336 is transmitted to the radio in each layer only from the signal output from the repeater (110 in FIG. 1) to the RX line.

The radio signal received via the TX antenna 341 or 345 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) .

Therefore, it is impossible to communicate directly between radio waves located between the underground floor and the ground floor inside the building, because there is no path for signal transmission. Thus, there is a problem in the conventional PLA communication system that direct communication between mobile terminals located in different layers of a building is impossible.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the conventional PLA communication system, and it is intended to provide a fire fighting PLA communication system capable of directly communicating between mobile terminals located in different layers in a building or between radios, .

According to an aspect of the PLA communication system of the present invention,

A TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,

The PLA communication system further includes an interlayer service module, wherein the interlayer service module

A first distributor for distributing a signal of a first mobile station input through a TX receive antenna to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;

A second distributor for distributing the TX signal to a TX cascaded signal transmitted to the repeater and an RX transmit antenna output signal transmitted to an RX transmit antenna;

A third distributor for distributing the RX signal to an RX cascade signal transmitted to the second mobile terminal and an RX transmit antenna branch signal transmitted to the RX transmit antenna;

A first combiner for combining the TX combined signal and the TX cascade signal and transmitting the combined signal to the TX path;

A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And

And a third combiner for combining the RX antenna output signal and the RX antenna branch signal and outputting the combined signal to the RX transmission antenna.

Preferably,

The first mobile terminal and the second mobile terminal are located outside the communication distance range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building.

Preferably,

The interlayer service module is provided in the layer A where the first mobile terminal is located and the layer B where the second mobile terminal is located,

And direct communication is possible between the first mobile terminal and the second mobile terminal.

Preferably,

And a plurality of signal amplifiers for amplifying the TX combined signal, the RX combined signal, the TX cascade signal, the RX cascade signal, the RX transmit antenna output signal, and the RX transmit antenna branch signal, respectively.

Preferably,

The first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler are all formed of separate couplers.

According to another aspect of the PLA communication system of the present invention,

A TX path for transmitting a TX signal to a repeater and a RX path for transmitting an RX signal from the repeater to a second mobile terminal,

A first interlayer service module for branching a signal of a first mobile station input through a first TX receive antenna and transmitting the signal on the RX path; And

And a second interlayer service module for branching signals of the first mobile terminal transmitted through the RX path connected to the first interlayer service module and outputting the signals to a second RX transmission antenna,

And the branched signal of the first mobile terminal is transmitted to the second mobile terminal through the second RX transmission antenna.

Preferably,

The second interlayer service module branches the signal of the second mobile terminal inputted through the second TX receive antenna and transmits the signal on the TX path,

Wherein the first interlayer service module branches the signal of the second mobile terminal transmitted through the TX path,

And the branched signal of the second mobile terminal is transmitted to the first mobile terminal through the first RX transmission antenna.

Preferably,

The first interlayer service module

A first distributor for distributing the signal of the first mobile terminal to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;

A second distributor for distributing a signal of the branched second mobile terminal to a cascaded signal for transmission to the repeater and a first RX transmission antenna output signal to be transmitted to the first RX transmission antenna;

A third distributor for distributing the RX signal to an RX cascade signal transmitted to the second mobile terminal and a first RX transmit antenna branch signal transmitted to the first RX transmit antenna;

A first combiner for combining the TX combined signal and the signal of the second mobile terminal that is branched and transmitting the signal to the TX path;

A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And

And a third combiner combining the first RX transmit antenna output signal and the first RX transmit antenna branch signal and outputting the resultant signal to the first RX transmit antenna.

Preferably,

The second interlayer service module

A first distributor for distributing the signal of the second mobile terminal to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;

A second distributor for distributing a signal of the branched second mobile terminal to a cascaded signal transmitted to the repeater and a second RX transmission antenna output signal transmitted to the second RX transmission antenna;

A third distributor for distributing the RX signal to an RX cascade signal and a second RX transmit antenna branch signal transmitted to the second RX transmit antenna;

A first combiner for combining the TX combined signal and the signal of the second mobile terminal that is branched and transmitting the signal to the TX path;

A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And

And a third combiner combining the second RX transmit antenna output signal and the second RX transmit antenna branch signal and outputting the resultant signal to the second RX transmit antenna.

Preferably,

The first mobile terminal and the second mobile terminal are located outside the communication distance range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building.

Preferably,

The first interlayer service module is provided in the layer A where the first mobile terminal is located and the second interlayer service module is provided in the layer B where the second mobile terminal is located.

Preferably,

Wherein the first interlayer service module and the second interlayer interfacing module are configured to receive the TX combination signal, the RX combination signal, the TX cascade signal, the RX cascade signal, the first RX transmission antenna output signal, And a plurality of signal amplifiers for amplifying the antenna output signal, the first RX transmit antenna branch signal, and the second RX transmit antenna branch signal.

Preferably,

The first interlayer service module and the first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler of the second interlayer service module are constituted by a coupler .

According to an aspect of the communication method of the PLA communication system of the present invention,

A communication method using a PLA (Power Line Amp) communication system having a TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,

Distributing a signal of a first mobile station input through a TX receive antenna through a first distributor to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;

Distributing the TX signal through a second distributor to a TX cascaded signal transmitted to the repeater and to an RX transmit antenna output signal transmitted to an RX transmit antenna;

Distributing the RX signal through a third distributor to an RX cascade signal transmitted to the second mobile terminal and an RX transmit antenna branch signal transmitted to the RX transmit antenna;

Combining the TX combined signal and the TX cascade signal through a first coupler and transmitting the TX combined signal to the TX path;

Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And

And combining the RX antenna output signal and the RX antenna branch signal through a third combiner and outputting the combined signal to the RX transmit antenna.

Preferably,

The first mobile terminal and the second mobile terminal are located outside the communication distance range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building.

Preferably,

Wherein the first distributor, the second distributor, the third distributor, the first combiner, the second combiner, and the third combiner are provided in the interlayer service module,

The interlayer service module is provided in the layer A where the first mobile terminal is located and the layer B where the second mobile terminal is located,

And direct communication is possible between the first mobile terminal and the second mobile terminal.

Preferably,

Amplifying the TX combination signal, the RX combination signal, the TX cascade signal, the RX cascade signal, the RX transmission antenna output signal, and the RX transmission antenna branch signal through a plurality of signal amplifiers, respectively.

Preferably,

The first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler are all formed of separate couplers.

According to another aspect of the communication method of the PLA communication system of the present invention,

A communication method using a Power Line Amplitude (PLA) communication system having a TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,

Branching a signal of a first mobile terminal input through a first TX receive antenna by a first interlayer service module and transmitting the signal on the RX path; And

Branching a signal of the first mobile terminal transmitted through the RX path connected to the first interlayer service module by the second interlayer service module and outputting the signal to the second RX transmission antenna,

And the branched signal of the first mobile terminal is transmitted to the second mobile terminal through the second RX transmission antenna.

Preferably,

The second interlayer service module branches the signal of the second mobile terminal inputted through the second TX receive antenna and transmits the signal on the TX path,

Wherein the first interlayer service module branches the signal of the second mobile terminal transmitted through the TX path,

And the branched signal of the second mobile terminal is transmitted to the first mobile terminal through the first RX transmission antenna.

Preferably,

The first interlayer service module

Distributing a signal of the first mobile terminal through a first distributor to a TX combined signal coupled to the TX path and an RX combined signal coupled to the RX path;

Distributing a signal of the second mobile terminal, which is branched through a second distributor, to a cascaded signal for transmission to the repeater and a first RX transmission antenna output signal to be transmitted to the first RX transmission antenna;

Distributing the RX signal through a third distributor to an RX cascade signal transmitted to the second mobile terminal and a first RX transmit antenna branch signal transmitted to the first RX transmit antenna;

Combining the TX combined signal with the signal of the second mobile terminal that is branched through the first coupler and transmitting the signal to the TX path;

Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And

Combining the first RX transmit antenna output signal and the first RX transmit antenna branch signal through a third combiner and outputting the combined signal to the first RX transmit antenna.

Preferably,

The second interlayer service module

Distributing a signal of the second mobile terminal through a first distributor to a TX combined signal coupled to the TX path and an RX combined signal coupled to the RX path;

Distributing a signal of the second mobile terminal branching through a second distributor to a cascaded signal transmitted to the repeater and a second RX transmit antenna output signal transmitted to the second RX transmit antenna;

Distributing the RX signal through a third distributor to a RX cascade signal and a second RX transmit antenna branch signal to be transmitted to the second RX transmit antenna;

Combining the TX combined signal with the signal of the second mobile terminal that is branched through the first coupler and transmitting the signal to the TX path;

Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And

And combining the second RX transmit antenna output signal and the second RX transmit antenna branch signal through the third coupler and outputting the resultant signal to the second RX transmit antenna.

Preferably,

The first mobile terminal and the second mobile terminal are located outside the communication distance range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building.

Preferably,

The first interlayer service module is provided in the layer A where the first mobile terminal is located and the second interlayer service module is provided in the layer B where the second mobile terminal is located.

Preferably,

Wherein the first interlayer service module and the second interlayer interfacing module are configured to receive the TX combination signal, the RX combination signal, the TX cascade signal, the RX cascade signal, the first RX transmission antenna output signal, And a plurality of signal amplifiers for amplifying the antenna output signal, the first RX transmit antenna branch signal, and the second RX transmit antenna branch signal.

Preferably,

The first interlayer service module and the first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler of the second interlayer service module are constituted by a coupler .

According to the PLA communication system and the communication method using the PLA communication system of the present invention, it is possible to directly communicate between radios located in different layers in a building without being limited by the service range of the outdoor antenna of the repeater.

The PLA communication system and the communication method using the PLA communication system according to the present invention can directly communicate with each other only by adding an interlayer service module composed of a plurality of distributors and combiners without constructing a separate line for communication between radios located in different layers in a building There is a possible effect.

1 is a view conceptually showing a line configuration of a conventional PLA communication system.
FIG. 2 is a diagram showing a conventional PLA communication system TX line configuration (FIG. 2 (a)) and an RX / FM line configuration (FIG. 2 (b)).
FIG. 3 is a view for explaining a problem that direct communication in a building inside a building in a fire fighting communication system using the PLA communication system of FIG. 2 is impossible.
4 is a block diagram of a PLA communication system configured with an interlayer service module 400 in accordance with the present invention.
5 is a block diagram of a fire fighting PLA communication system including interlayer service modules 530 and 540 in the present invention.
6 is a view showing a path through which direct communication between the mobile terminal 510 and the mobile terminal 520 is possible through the interlayer service modules 530 and 540 according to the present invention.
7 is a diagram illustrating another embodiment of a fire fighting PLA communication system including interlayer service modules 730 and 740 in the present invention.
8 is a diagram showing a path through which direct communication between the mobile terminal 710 and the mobile terminal 720 is possible through the interlayer service modules 730 and 740 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.

The PLA communication system according to the present invention is a PLA (Power Line Amp) communication method in which when a coaxial cable is extended to transmit an RF signal in a mobile communication (including a TRS) Includes a signal amplifier (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 coaxial cable to compensate for losses when the level is low Communication system.

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

In the present invention, the TX signal is collectively referred to as a transmission signal of one or more mobile terminals, and the TX signal is configured to be transmitted from the mobile terminal to the relay device.

In the present invention, the RX signal refers to a signal received from a repeater to one or more mobile terminals collectively, and the RX signal includes an RX / FM signal.

The present invention solves the problem that the conventional PLA communication system can not directly communicate with a radio in the building, i.e., a mobile terminal, and enables direct communication including an interlayer service model without a separate line or route.

4 is a block diagram of a PLA communication system configured with an interlayer service module 400 in accordance with the present invention.

As described above, the PLA (Power Line Amp) communication system includes a TX path 420 for transmitting a TX signal to a repeater 110 (FIG. 1), and a TX path 420 for moving the RX signal from the repeater 110 And an RX path 440 for transmitting to the terminal.

The interlayer service module in the present invention includes a first distributor 401, a second distributor 402, a third distributor 403, a first combiner 404, a second combiner 405, and a third combiner 406 .

The first distributor 401 outputs a signal of the mobile terminal input through the TX receiving antenna 410 to the TX combining signal 471 coupled to the TX path 420 and the RX combining signal 472 coupled to the RX path 440. [ ).

The second distributor 402 distributes the TX signal 420 to the TX cascaded signal 473 transmitted to the repeater and to the RX transmit antenna output signal 474 transmitted to the RX transmit antenna 430.

The third distributor 403 distributes the RX signal 450 to the RX cascade signal 475 transmitted to the mobile terminal and to the RX transmit antenna branch signal 476 transmitted to the RX transmit antenna 430.

The TX cascade signal 473, the RX cascade signal 475, the RX transmit antenna output signal 474, and the RX transmit antenna branch signal 476 in FIG. Are used to refer to each signal and are used interchangeably to refer to each amplifier that amplifies each signal at the same time.

The first combiner 404 combines the TX combine signal 471 and the TX cascade signal 473 and passes it to the TX path 460.

The second combiner 405 combines the RX combine signal 472 and the RX cascade signal 475 and passes it to the RX path 440.

The third combiner 406 combines the RX antenna output signal 474 and the RX antenna branch signal 476 and outputs it to the RX transmit antenna 430.

4, the block 460 is a simplified representation of the TX path configuration of FIG. 2 (a), and the block 450 is a simplified representation of the RX / FM path configuration of FIG. 2 (b).

5 is a block diagram of a fire fighting PLA communication system including interlayer service modules 530 and 540 in the present invention.

FIG. 5 is a diagram illustrating an embodiment in which direct communication between mobile terminals is performed by applying the interlayer service module of FIG.

5, the interlayer service module 530 includes a first distributor 531, a second distributor 532, a third distributor 533, a first combiner 534, a second combiner 535, And a third coupler 536.

The interlayer service module 540 also includes a first distributor 541, a second distributor 542, a third distributor 543, a first combiner 544, a second combiner 545 and a third combiner 546 ).

The first distributor, the second distributor, the second distributor, the second distributor, the second distributor, the second distributor, the second distributor, the second distributor, the third distributor and the third coupler in the interlayer service module, Third splitter, first coupler, second coupler, and third coupler, respectively.

Although not shown in FIG. 5, it is apparent to those skilled in the art that the interlayer service module may further include a signal amplifier for amplifying each of the distributed signals.

The A layer and the B layer in Fig. 5 are not necessarily the same layer of the building, and the A layer and the B layer do not necessarily have to be continuous building layers. 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 functions of the internal components of the interlayer service modules 530 and 540 are the same as those described in Fig. 4 and will not be described again.

However, the TX combined signal is a signal transmitted from the first distributor 531 to the signal combiner 534, and the RX combined signal is a signal transmitted from the first distributor 531 to the signal combiner 535.

The TX cascaded signal refers to the signal transmitted from the second distributor 532 to the signal combiner 534 and the RX transmit antenna output signal is the signal transmitted from the second distributor 532 to the signal combiner 536 .

The RX cascade signal refers to the signal transmitted from the third distributor 533 to the signal combiner 535 and the RX transmit antenna branch signal is the signal transmitted from the third distributor 533 to the signal combiner 536.

The first mobile terminal 510 and the second mobile terminal 520 in FIG. 5 are located outside the communication distance range of the outdoor antenna 116 of the repeater (110 in FIG. 1) located outside the building, Located on the other floor.

The first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler in the interlayer service modules 530 and 540 may be configured as separate couplers.

In one embodiment, when the coupler operates as a splitter, a splitter that can split one input into two outputs may be used.

Conversely, when the coupler operates as a coupler, it must be configured to combine two inputs into one output.

Blocks 517 and 527 in Figure 5 are simplified representations of the TX path configuration of Figure 2 (a) and blocks 518 and 528 represent the RX / FM path configuration of Figure 2 (b) As shown in FIG.

In FIG. 5, line amplifiers 523 and 524 amplify the transmission signal of the second mobile terminal to a certain level and can be selectively used according to the signal sensitivity.

The line amplifiers 525 and 526 amplify the reception signal of the second mobile terminal to a certain level and can be selectively used according to the signal sensitivity.

The line amplifiers 513, 514, 515 and 516 in the first mobile terminal also amplify the transmission signal or the reception signal level to an appropriate level in accordance with the extension period of the coaxial cable.

6 is a view showing a path through which direct communication between the mobile terminal 510 and the mobile terminal 520 is possible through the interlayer service modules 530 and 540 according to the present invention.

The first interlayer service module 530 branches the signals of the first mobile terminal 510 input through the first TX reception antenna 511 to 535 and transmits the signals to the RX path 518-2 .

The second interlayer service module 540 transmits the signal of the first mobile terminal transmitted through the RX paths 518-2 to 528-1 to 528 connected to the first interlayer service module 530 to the branch 543 - 546 to the second RX transmission antenna 522.

The signal of the first mobile terminal that is branched is transmitted to the second mobile terminal 520 through the second RX transmission antenna 522.

That is, the TX signal of the mobile terminal 510 is directly transmitted to the mobile terminal 520 through the path 610 in FIG.

The TX signal of the second mobile terminal 520 is directly transmitted to the mobile terminal 510 through the path 620 in FIG.

The second interlayer service module 540 branches the signals of the second mobile terminal 520 inputted through the second TX reception antenna 521 to branch 541 to 544 to transmit the TX paths 527 to 527- 2- > 517-1).

The first interlayer service module 530 branches (532- > 536) the signal of the second mobile terminal transmitted via the TX path 517-1, and the signal of the branched second mobile terminal is transmitted to the first RX transmission antenna (512) to the first mobile terminal (510).

The first interlayer service module 530 and the second interlayer service module 540 are configured to include a plurality of distributors and a plurality of combiners as illustrated in FIG.

7 is a diagram illustrating another embodiment of a fire fighting PLA communication system including interlayer service modules 730 and 740 in the present invention.

FIG. 5 shows an embodiment in which both the distributor and the combiner included in the same layer service module 730 and 740 as the PLA communication system are constituted by couplers.

As mentioned above, when the coupler operates as a divider, a divider capable of dividing one input into two outputs can be used.

Conversely, when the coupler operates as a coupler, it must be configured to combine two inputs into one output.

With reference to FIG. 7, a communication method of the PLA communication system is examined.

The signal of the mobile terminal input through the TX receiving antenna 711 through the first coupler 731 is supplied to the TX coupler 731 and the RX path 718-2-724 -1 to > 728).

The TX signal 717-1 is transmitted through the second coupler 732 to the TX cascaded signal 732-> 734 transmitted to the repeater 110 (FIG. 1) and the RX And distributes it to the transmission antenna output signals (732 -> 736).

The RX signal 718 is transmitted via the third coupler 733 to the RX cascade signals 733-735 transmitted to the mobile terminal and the RX transmit antenna branch signals 733-736 transmitted to the RX transmit antenna 712 Distribution.

And couples the TX combined signal and the TX cascade signal to the TX path 717 through the fourth coupler 734.

And combines the RX combined signal and the RX cascade signal through the fifth coupler 735 and transmits the combined signal to the RX path 718-2- > 728.

And outputs the RX antenna output signal to the RX transmission antenna 712 by combining the RX antenna output signal and the RX antenna branch signal through the sixth coupler 736.

Although not shown in FIG. 7, it is apparent to those skilled in the art that the interlayer service module may further include a signal amplifier for amplifying each of the distributed signals.

The interlayer service module is configured such that the layer A and the layer where the first mobile terminal is located and the second mobile terminal are located in the inter-layer service module, Respectively, so that direct communication is possible between the first mobile terminal and the second mobile terminal.

In FIG. 7, the first coupler, the second coupler, and the third coupler included in the interlayer service module 730 operate as a distributor, and the fourth coupler, the fifth coupler, and the coupler operate as a signal coupler.

8 is a diagram showing a path through which direct communication between the mobile terminal 710 and the mobile terminal 720 is possible through the interlayer service modules 730 and 740 according to the present invention.

FIG. 8 is a diagram showing a path through which the mobile terminal 710 and the mobile terminal 720 communicate directly through the embodiment of FIG.

The first interlayer service module 730 branches the signal of the first mobile terminal 710 input through the first TX reception antenna 711 to branch 731 to 735 and transmits the signal to the RX path 718-2 .

The second interlayer service module 740 transmits the signals of the first mobile terminal transmitted through the RX paths 718-2 through 728-1 through 728 connected to the first interlayer service module 730 to the branches 743 - 746 and outputs it to the second RX transmission antenna 722.

The signal of the first branched mobile terminal is transmitted to the second mobile terminal 720 through the second RX transmission antenna 722.

That is, the TX signal of the mobile terminal 710 is directly transmitted to the mobile terminal 720 through the path 810 in FIG.

The TX signal of the second mobile terminal 720 is directly transmitted to the mobile terminal 710 through the path 820 in FIG.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Will be clear to those who have knowledge of.

400, 530, 540, 730, 740 interlayer service module
401, 402, 403 signal distributor
404, 405, 406 signal combiner
471, 472, 473, 474, 475, 476 signal amplifiers
460, 517, 527, 717, 727 TX line configuration
450, 518, 528, 718, 728 RX / FM line configuration

Claims (26)

A TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,
The PLA communication system further includes an interlayer service module, wherein the interlayer service module
A first distributor for distributing a signal of a first mobile station input through a TX receive antenna to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;
A second distributor for distributing the TX signal to a TX cascaded signal transmitted to the repeater and an RX transmit antenna output signal transmitted to an RX transmit antenna;
A third distributor for distributing the RX signal to an RX cascade signal transmitted to the second mobile terminal and an RX transmit antenna branch signal transmitted to the RX transmit antenna;
A first combiner for combining the TX combined signal and the TX cascade signal and transmitting the combined signal to the TX path;
A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And
And a third combiner for combining the RX antenna output signal and the RX antenna branch signal and outputting the combined signal to the RX transmission antenna. The method according to claim 1,
Wherein the first mobile terminal and the second mobile terminal are outside a communication distance range of the outdoor antenna of the repeater located outdoors of the building and are located in different layers inside the building. The method according to claim 1,
The interlayer service module is provided in the layer A where the first mobile terminal is located and the layer B where the second mobile terminal is located,
Wherein the first mobile terminal and the second mobile terminal are capable of direct communication between the first mobile terminal and the second mobile terminal. The method according to claim 1,
Further comprising: a plurality of signal amplifiers for amplifying the TX combined signal, the RX combined signal, the TX cascade signal, the RX cascade signal, the RX transmit antenna output signal, and the RX transmit antenna branch signal, respectively. . The method according to claim 1,
Wherein the first splitter, the second splitter, the third splitter, the first combiner, the second combiner, and the third combiner are all comprised of separate couplers. A TX path for transmitting a TX signal to a repeater and a RX path for transmitting an RX signal from the repeater to a second mobile terminal,
A first interlayer service module for branching a signal of a first mobile station input through a first TX receive antenna and transmitting the signal on the RX path; And
And a second interlayer service module for branching signals of the first mobile terminal transmitted through the RX path connected to the first interlayer service module and outputting the signals to a second RX transmission antenna,
And the branched signal of the first mobile terminal is transmitted to the second mobile terminal through the second RX transmission antenna. The method of claim 6,
The second interlayer service module branches the signal of the second mobile terminal inputted through the second TX receive antenna and transmits the signal on the TX path,
Wherein the first interlayer service module branches the signal of the second mobile terminal transmitted through the TX path,
And the signal of the branched second mobile terminal is transmitted to the first mobile terminal via the first RX transmission antenna. 8. The method of claim 7,
A first distributor for distributing the signal of the first mobile terminal to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;
A second distributor for distributing a signal of the branched second mobile terminal to a cascaded signal for transmission to the repeater and a first RX transmission antenna output signal to be transmitted to the first RX transmission antenna;
A third distributor for distributing the RX signal to an RX cascade signal transmitted to the second mobile terminal and a first RX transmit antenna branch signal transmitted to the first RX transmit antenna;
A first combiner for combining the TX combined signal and the signal of the second mobile terminal that is branched and transmitting the signal to the TX path;
A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And
And a third combiner for combining the first RX transmit antenna output signal and the first RX transmit antenna branch signal and outputting the resultant signal to the first RX transmit antenna. 8. The method of claim 7,
A first distributor for distributing the signal of the second mobile terminal to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;
A second distributor for distributing a signal of the branched second mobile terminal to a cascaded signal transmitted to the repeater and a second RX transmission antenna output signal transmitted to the second RX transmission antenna;
A third distributor for distributing the RX signal to an RX cascade signal and a second RX transmit antenna branch signal transmitted to the second RX transmit antenna;
A first combiner for combining the TX combined signal and the signal of the second mobile terminal that is branched and transmitting the signal to the TX path;
A second combiner for combining the RX combined signal and the RX cascade signal and transmitting the combined signal to the RX path; And
And a third combiner for combining the second RX transmit antenna output signal and the second RX transmit antenna branch signal and outputting the combined signal to the second RX transmit antenna. The method of claim 7,
Wherein the first mobile terminal and the second mobile terminal are outside a communication distance range of the outdoor antenna of the repeater located outdoors of the building and are located in different layers inside the building. The method of claim 7,
Wherein the first interlayer service module is provided in the layer A where the first mobile terminal is located and the second interlayer service module is provided in the layer B where the second mobile terminal is located. The method according to claim 8 or 9,
Wherein the first interlayer service module and the second interlayer interfacing module are configured to receive the TX combination signal, the RX combination signal, the TX cascade signal, the RX cascade signal, the first RX transmission antenna output signal, And a plurality of signal amplifiers each for amplifying the antenna output signal, the first RX transmit antenna branch signal, and the second RX transmit antenna branch signal. The method according to claim 8 or 9,
The first interlayer service module and the first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler of the second interlayer service module are constituted by a coupler And the PLA communication system. A communication method using a PLA (Power Line Amp) communication system having a TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,
Distributing a signal of a first mobile station input through a TX receive antenna through a first distributor to a TX combined signal coupled to the TX path and an RX coupled signal coupled to the RX path;
Distributing the TX signal through a second distributor to a TX cascaded signal transmitted to the repeater and to an RX transmit antenna output signal transmitted to an RX transmit antenna;
Distributing the RX signal through a third distributor to an RX cascade signal transmitted to the second mobile terminal and an RX transmit antenna branch signal transmitted to the RX transmit antenna;
Combining the TX combined signal and the TX cascade signal through a first coupler and transmitting the TX combined signal to the TX path;
Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And
And combining the RX antenna output signal and the RX antenna branch signal through a third coupler and outputting the combined signal to the RX transmit antenna. 15. The method of claim 14,
Wherein the first mobile terminal and the second mobile terminal are located outside the communication range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building. Communication method. 15. The method of claim 14,
Wherein the first distributor, the second distributor, the third distributor, the first combiner, the second combiner, and the third combiner are provided in the interlayer service module,
The interlayer service module is provided in the layer A where the first mobile terminal is located and the layer B where the second mobile terminal is located,
Wherein the first mobile terminal and the second mobile terminal are capable of direct communication between the first mobile terminal and the second mobile terminal. 15. The method of claim 14,
Further comprising amplifying the TX combined signal, the RX combined signal, the TX cascade signal, the RX cascade signal, the RX transmit antenna output signal, and the RX transmit antenna branch signal through a plurality of signal amplifiers, A communication method using a PLA communication system. 15. The method of claim 14,
Characterized in that the first distributor, the second distributor, the third distributor, the first combiner, the second combiner and the third combiner are all comprised of separate couplers. Communication method. A communication method using a Power Line Amplitude (PLA) communication system having a TX path for transmitting a TX signal to a repeater and an RX path for transmitting an RX signal from the repeater to a second mobile terminal,
Branching a signal of a first mobile terminal input through a first TX receive antenna by a first interlayer service module and transmitting the signal on the RX path; And
Branching a signal of the first mobile terminal transmitted through the RX path connected to the first interlayer service module by the second interlayer service module and outputting the signal to the second RX transmission antenna,
And the branched signal of the first mobile terminal is transmitted to the second mobile terminal through the second RX transmission antenna. The method of claim 19,
The second interlayer service module branches the signal of the second mobile terminal inputted through the second TX receive antenna and transmits the signal on the TX path,
Wherein the first interlayer service module branches the signal of the second mobile terminal transmitted through the TX path,
And the signal of the second mobile terminal is transmitted to the first mobile terminal through the first RX transmission antenna. 21. The system of claim 20,
Distributing a signal of the first mobile terminal through a first distributor to a TX combined signal coupled to the TX path and an RX combined signal coupled to the RX path;
Distributing a signal of the second mobile terminal, which is branched through a second distributor, to a cascaded signal for transmission to the repeater and a first RX transmission antenna output signal to be transmitted to the first RX transmission antenna;
Distributing the RX signal through a third distributor to an RX cascade signal transmitted to the second mobile terminal and a first RX transmit antenna branch signal transmitted to the first RX transmit antenna;
Combining the TX combined signal with the signal of the second mobile terminal that is branched through the first coupler and transmitting the signal to the TX path;
Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And
And combining the first RX transmit antenna output signal and the first RX transmit antenna branch signal through the third coupler and outputting the resultant signal to the first RX transmit antenna. Way. 21. The method of claim 20,
Distributing a signal of the second mobile terminal through a first distributor to a TX combined signal coupled to the TX path and an RX combined signal coupled to the RX path;
Distributing a signal of the second mobile terminal branching through a second distributor to a cascaded signal transmitted to the repeater and a second RX transmit antenna output signal transmitted to the second RX transmit antenna;
Distributing the RX signal through a third distributor to a RX cascade signal and a second RX transmit antenna branch signal to be transmitted to the second RX transmit antenna;
Combining the TX combined signal with the signal of the second mobile terminal that is branched through the first coupler and transmitting the signal to the TX path;
Combining the RX combined signal and the RX cascade signal through a second coupler and transmitting the combined signal to the RX path; And
And combining the second RX transmit antenna output signal and the second RX transmit antenna branch signal through a third coupler and outputting the resultant signal to the second RX transmit antenna. Way. The method of claim 20,
Wherein the first mobile terminal and the second mobile terminal are located outside the communication range of the outdoor antenna of the repeater located outside the building and are located in different layers within the building. Communication method. The method of claim 20,
Wherein the first interlayer service module is provided in the layer A where the first mobile terminal is located and the second interlayer service module is provided in the layer B where the second mobile terminal is located. Using communication method. The method of claim 21 or 22,
Wherein the first interlayer service module and the second interlayer interfacing module are configured to receive the TX combination signal, the RX combination signal, the TX cascade signal, the RX cascade signal, the first RX transmission antenna output signal, And a plurality of signal amplifiers for amplifying the antenna output signal, the first RX transmit antenna branch signal, and the second RX transmit antenna branch signal. The method of claim 21 or 22,
The first interlayer service module and the first distributor, the second distributor, the third distributor, the first coupler, the second coupler, and the third coupler of the second interlayer service module are constituted by a coupler Wherein the PLA communication system comprises:

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