KR102457742B1 - Method for repeating singnals using multi-path repeater - Google Patents

Abstract

A signal relay method using a multi-path, comprising a plurality of input/output terminals, wherein one of the plurality of input/output terminals is an input terminal and the other is an output terminal according to the level of an input signal detected from the plurality of input/output terminals. Detecting the input signals of the plurality of input/output terminals, each of which is performed by a signal relay system including a path repeater, and in a standby state; determining an input/output direction in which one input/output terminal among the plurality of input/output terminals is an input terminal and the other input/output terminals are output terminals based on the detected level of the input signal; and relaying the signal by entering the signal relay state and controlling the multi-path repeater to operate according to the determined input/output direction.

Description

Signal relay method using multipath {METHOD FOR REPEATING SINGNALS USING MULTI-PATH REPEATER}

Embodiments disclosed in the present specification relate to a signal relay method using a multipath, and extend the distance and range for transmitting and receiving a signal in a network using a single communication method using a single frequency, and transmit a signal even if there is an obstacle It is about a signal relay method using multipath that makes this possible.

In a mobile communication system, a single communication method using a single frequency has been widely applied to amateur radio networks, corporate networks, public networks, emergency networks, and disaster networks since a long time ago. For example, amateur radio networks used by individuals, corporate networks operated by taxi associations, public networks used by state-owned companies such as Korea Electric Power Corporation, emergency networks used by the National Police Agency or the fire department for command or communication during their work, and disasters There is a disaster network used in a building or facility.

On the other hand, since a message is transmitted and received using only one frequency in the network of the above single communication method, a time division duplex (TDD) method for temporally dividing transmission and reception signals is used for bidirectional communication. In the current TDD network, unlike other mobile communication networks, direct communication between terminals is performed without a base station. Accordingly, a communication service area is formed by the output and the lowest reception level of the terminal. Accordingly, there is a problem in that a communication failure occurs in a facility such as a basement of a building, a tunnel, a subway, or a common area, and the communication cannot be performed smoothly because a service area cannot be secured.

Accordingly, in order to secure a service area, especially for disaster networks, auxiliary facilities for relaying transmission/reception signals between terminals must be provided in buildings or facilities. The installation of such auxiliary equipment is one of the items of inspection on completion of a building or facility, and in order to pass the inspection, it is necessary to install the equipment for the formation of a disaster network in the building or facility. Such a disaster network is used by firefighters or lifeguards in case of a fire or disaster in a facility. Therefore, it is legally compulsory to construct communication facilities that satisfy the ‘Fire Safety Standards for Wireless Communication Auxiliary Equipment (NSFC 505)’ among the national fire safety standards for facilities such as basements, tunnels, subways, and common areas of buildings.

Auxiliary equipment for signal relay of such a disaster network is typically a relay device that relays signals between different service areas, for example, areas where signals are not transmitted to each other, such as the first basement floor and the second basement floor in the same building. is composed of The repeater amplifies and processes the signal received in one service area using a repeater and then transmits it to another service area. This makes it possible to transmit and receive signals between areas blocked from each other.

However, in the case of a signal relay facility for a disaster network, the necessity has been emphasized and development has begun only recently. Its role is limited in relaying the communication of Accordingly, the signal relay facilities of the disaster network are not advanced enough to enable life-saving personnel to communicate as needed in case of a fire or disaster.

1 is a diagram illustrating a disaster network relay system according to the prior art. Referring to FIG. 1 , signals from outside the building and from the disaster prevention room are transmitted to each basement floor through a repeater installed in the disaster prevention room. In addition, the signal in the reverse direction is transmitted to the repeater of the disaster prevention room through signal distributors and tracks on each basement floor, and the transmitted signal is amplified and processed and transmitted to the outside of the building where the command headquarters is located.

In such a communication configuration, inter-floor communication, for example, a signal received on the first basement level cannot be transmitted to the second basement floor. The reverse is also true. In a conventional disaster network, it is difficult to perform inter-floor communication even using a relay system as shown in FIG.

In addition, in such a system, a plurality of dividers are provided for distributing a signal to be received from each layer or transmitted to each layer, and a commonly used Wilkinson divider causes signal loss in a line connecting the layers. Therefore, as the number of floors increases, a signal passing through a plurality of distributors installed on each floor accumulates loss every time it passes through the distributors, so there is a problem in that communication becomes impossible. For example, in FIG. 1, when a signal is transmitted from the ground to the fourth basement level, since it passes through the four-stage splitter, there is a problem that a signal loss of about -30 dB and a total of -120 dB occurs for each splitter.

In order to overcome this system structure, a larger number of repeaters must be installed and operated. For example, if the system shown in FIG. 1 is supplemented by installing a plurality of repeaters so that inter-floor communication is possible and there is no shadow area, a plurality of repeaters must be installed as shown in FIG. 2 . In particular, in a situation where the number of basement floors of a building increases and the number of floors above the ground increases, it is difficult to form a communication service area in the entire building simply by connecting a line and a distributor to one repeater, so the problem of installing multiple repeaters there is In this case, there is a problem that not only the system configuration cost rapidly increases, but also a lot of time and effort is required for maintenance.

Therefore, there is a need for a technique for solving the above-mentioned problems.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for the derivation of the present invention or acquired in the process of derivation of the present invention, and it cannot be said that it is necessarily a known technique disclosed to the general public before the filing of the present invention. .

Embodiments disclosed herein have an object to propose a signal relay method using a multi-path that enables the formation of a network of short-term communication such as a disaster network without a shadow area within a building.

Embodiments disclosed herein have an object to present a signal relay method using a multi-path that enables relay of short-term communication between different floors, in particular, underground floors.

In addition, the embodiments disclosed herein have an object to propose a signal relay method using a multi-path that forms a wide service area even without connecting an excessively large number of repeaters.

And the embodiments disclosed herein have an object to provide a signal relay method using a multi-path that does not cause signal loss or excessively amplify a signal even if a plurality of repeaters are connected.

Furthermore, embodiments disclosed herein have an object to provide a signal relay method using a multi-path capable of relaying a signal even without additional facilities for connecting a plurality of repeaters.

In addition, the embodiments disclosed herein have an object to provide a signal relay method using a multi-path, which is easy to install, since a service area can be expanded by simply connecting a multi-path repeater.

Another object of the embodiments disclosed herein is to provide a signal relay method using a multi-path in which each input/output terminal of the repeater adaptively transmits and receives signals according to an installation environment or a communication environment.

As a technical means for achieving the above technical problem, according to an embodiment, the signal relay method includes a plurality of input/output terminals, one of the plurality of input/output terminals according to the level of the input signal detected from the plurality of input/output terminals is performed by a signal relay system including a multi-path repeater that is variable as an input terminal and the rest is an output terminal, and in a standby state, detecting input signals of the plurality of input/output terminals, respectively; determining an input/output direction in which one input/output terminal among the plurality of input/output terminals is an input terminal and the other input/output terminals are output terminals based on the detected level of the input signal; and relaying the signal by entering the signal relay state and controlling the multi-path repeater to operate according to the determined input/output direction.

In addition, according to an embodiment, the signal relay method in a computer-readable recording medium in which a computer program for performing the signal relay method is recorded, includes a plurality of input/output terminals, depending on the level of input signals detected from the plurality of input/output terminals. Detecting each input signal of the plurality of input/output terminals in a standby state, performed by a signal relay system including a multi-path repeater in which one of the plurality of input/output terminals is an input terminal and the other is an output terminal; determining an input/output direction in which one input/output terminal among the plurality of input/output terminals is an input terminal and the other input/output terminals are output terminals based on the detected level of the input signal; and relaying the signal by entering the signal relay state and controlling the multi-path repeater to operate according to the determined input/output direction.

In addition, according to an embodiment, a multi-path repeater including a plurality of input/output terminals, wherein one of the plurality of input/output terminals is an input terminal and the other is an output terminal according to the level of an input signal detected from the plurality of input/output terminals. The signal relay method is performed by a signal relay system comprising: in a computer program stored in a medium to perform the signal relay method, in a standby state, each of the steps of detecting the input signals of the plurality of input and output terminals; determining an input/output direction in which one input/output terminal among the plurality of input/output terminals is an input terminal and the other input/output terminals are output terminals based on the detected level of the input signal; and relaying the signal by entering the signal relay state and controlling the multi-path repeater to operate according to the determined input/output direction.

According to any one of the above-described problem solving means, it is possible to present a signal relay method using a multi-path that enables the formation of a short-term communication network such as a disaster network without a shadow area within a building.

According to any one of the above-mentioned problem solving means, it is possible to present a signal relay method using a multi-path that enables relay of short-term communication between different floors, in particular, the basement floors.

According to any one of the above-described problem solving means, it is possible to present a signal relay method using a multi-path that forms a wide service area without connecting an excessively large number of repeaters.

Furthermore, according to any one of the above-described problem solving means, it is possible to present a signal relay method using a multi-path that does not cause signal loss or excessively amplify a signal even when a plurality of repeaters are connected.

In addition, according to any one of the above-described problem solving means, it is possible to present a signal relay method using a multi-path capable of relaying signals without additional facilities for connecting a plurality of repeaters.

And, according to any one of the above-described problem solving means, it is possible to provide a signal relay method using a multi-path, which is easy to install, because a service area can be expanded by simply connecting a multi-path repeater.

And, according to any one of the above-described problem solving means, it is possible to present a signal relay method using a multi-path in which each input/output terminal of the repeater adaptively transmits and receives a signal according to an installation environment or a communication environment.

Effects obtainable in the disclosed embodiments are not limited to the above-mentioned effects, and other effects not mentioned are clear to those of ordinary skill in the art to which the embodiments disclosed from the description below belong. will be able to understand

1 and 2 are block diagrams illustrating an example of a disaster network relay system according to the prior art.
3 is a block diagram illustrating a functional configuration of a multi-path repeater according to an embodiment.
4 is a block diagram illustrating an exemplary configuration of a multi-path repeater according to an embodiment.
5 and 6 are exemplary diagrams illustrating signal input/output states of a system in which a multi-path repeater according to the embodiment shown in FIG. 4 is configured.
7 is a block diagram illustrating an exemplary configuration of a multi-path repeater according to another embodiment.
8 is a circuit diagram illustrating a configuration of a distribution unit of a multi-path repeater according to an embodiment.
9 is a circuit diagram illustrating the configuration of a Wilkinson power divider.
10 is a circuit diagram illustrating a configuration of an amplifying unit according to an exemplary embodiment.
11 is a system configuration diagram for explaining the necessity of configuring a bypass path of an amplification unit according to an embodiment.
12 to 14 are diagrams for specifically explaining an operation mode of an amplifying unit according to an exemplary embodiment.
15 to 16 are circuit diagrams illustrating a configuration of a detector according to different embodiments.
17 is a flowchart illustrating a method of relaying a signal through a multi-path step by step performed by a multi-path repeater.
18 is a flowchart illustrating step S200 in more detail in the method of relaying a signal through the multipath shown in FIG. 17 .
19 and 20 are exemplary system configuration diagrams including a multi-path repeater for explaining the signal relay method through the multi-path shown in FIG.
21 is a flowchart for explaining a method of controlling an amplifier mode of each repeater included in the system by learning a mobile station signal in a signal relay system including a multi-path repeater.
22 is a conceptual diagram for explaining an example of an artificial intelligence model for learning a multi-path repeater.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below may be modified and implemented in various different forms. In order to more clearly describe the characteristics of the embodiments, detailed descriptions of matters widely known to those of ordinary skill in the art to which the following embodiments belong are omitted. And, in the drawings, parts not related to the description of the embodiments are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a component is said to be "connected" with another component, it includes not only the case where it is 'directly connected' but also the case where it is 'connected with another component in between'. In addition, when a component "includes" a component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

3 is a block diagram illustrating a functional configuration of a multi-path repeater according to an embodiment, and FIG. 4 is a block diagram illustrating an exemplary configuration of a multi-path repeater according to an embodiment. 5 and 6 are exemplary diagrams illustrating signal input/output states of a system in which a multi-path repeater according to the embodiment shown in FIG. 4 is configured. 7 is a block diagram illustrating an exemplary configuration of a multi-path repeater according to another embodiment, FIG. 8 is a circuit diagram illustrating a configuration of a distribution unit of a multi-path repeater according to an embodiment, and FIG. 9 is a Wilkinson power distributor. A circuit diagram showing the configuration of

Furthermore, FIG. 10 is a circuit diagram illustrating the configuration of an amplifying unit according to an embodiment, and FIG. 11 is a system configuration diagram illustrating the necessity of configuring a bypass path of the amplifying unit according to an embodiment. 12 to 14 are diagrams for specifically explaining an operation mode of an amplifying unit according to an exemplary embodiment.

Meanwhile, FIGS. 15 to 16 are circuit diagrams illustrating a configuration of a detector according to another exemplary embodiment.

The multi-path repeater 100 is a repeater in which input and output are adaptively variable as needed, rather than in a fixed state like a general repeater. carry out At this time, if the number of input/output terminals is ‘N’, one of them becomes an input terminal and the remaining N-1 becomes an output terminal. Furthermore, if only 'K' terminals, which are a part of 'N' input/output terminals, are used as needed, one of them may become an input terminal and the remaining K-1 may become an output terminal. Furthermore, at this time, the input terminal is not fixed to one, but is determined as an input terminal among a plurality of input/output terminals according to the strength of the input signal.

The multi-path repeater 100 may include, for example, a total of nine input/output terminals 110 to perform 1:8 signal relaying as needed, as shown in FIG. 4 . At this time, for example, when the first terminal 110 - 1 becomes an input terminal, the remaining terminals of the second terminal 110 - 2 to the ninth terminal 110 - 9 may all become output terminals.

As described above, the multi-path repeater 100 performing 1:N signal relay may replace a plurality of repeaters in the conventional system shown in FIG. 2 . Since the conventional repeater includes two terminals and performs 1:1 signal relay, the multi-path repeater 100 performs 1:N signal relay. One multi-path repeater 100 of 1:8 can replace the 11 repeaters shown in FIG. 2 .

At this time, as shown in FIG. 5, when a signal is input from the disaster prevention room repeater while the input/output terminal corresponding to the eighth terminal 110-8 is connected to the disaster prevention room repeater with reference to FIG. 4, the multi-path repeater 100 ) may set the eighth terminal 110-8 as an input terminal, and all other eight terminals may be set as an output terminal.

Also, as shown in FIG. 6 , when the third terminal 110 - 3 is set as an input terminal with reference to FIG. 4 , all other eight terminals may be set as output terminals.

Accordingly, the signal generated in the disaster prevention room may be output to the ground as well as to each basement floor through the multi-path repeater 100 . In addition, the signal generated on the 4th basement level can be transmitted not only to the disaster prevention room, but also to the 1st, 2nd, and 3rd basement floors.

That is, in the system as shown in FIG. 1 , the conventional signal generated from each basement floor is transmitted only to the disaster prevention room, and the inconvenience of having to transmit it back to each floor in the disaster prevention room is solved, and at the same time, as shown in FIG. The inefficiency of having to install multiple repeaters in the same system can also be improved.

3 again, the multi-path repeater 100 capable of relaying such a 1:N-1 signal includes N input/output terminals 110 , a control unit 120 , a distribution unit 130 , and N amplification units 140 . ), N detection units 150 , and a power supply unit 160 may be included.

In this case, two or more input/output terminals 110 may be provided for relaying signals of 1:N-1 as described above. In addition, the distribution unit 130 and the amplification unit 140 may be provided as many as the number corresponding to the number of input/output terminals 110 .

The multi-path repeater 100 as shown in FIG. 3 may be configured to include, for example, four input/output terminals to relay a signal at 1:3 as shown in FIG. 7 . 7 is a block diagram illustrating an exemplary configuration of a multi-path repeater according to another embodiment.

As shown in FIG. 7 , the multi-path repeater 100 according to an embodiment may include four input/output terminals. In addition, each input/output terminal is configured with one detection unit and one amplifying unit, respectively. At this time, the distribution unit connects the amplification unit corresponding to each input/output terminal.

Referring back to FIG. 3, sequentially describing the components of the multi-path repeater 100, the input/output terminal 110 receives a signal input from the outside, or an external device to output a transmitted signal to the outside; For example, it is a port connected to an external wireless transceiver including an antenna.

And the control unit 120 is a component including a signal processing means such as a CPU or a microcomputer, and controls all the components in the multi-path repeater 100, and input among the plurality of input/output terminals 110 according to the signal detected in real time. The terminal can be determined, and the output terminal can be determined accordingly. To this end, the control unit 120 may be configured together with a storage means (not shown) in which a preset algorithm or related data is stored. The control unit 120 determines an input terminal and an output terminal through an operation based on the data stored in the storage means, and the operation mode of the amplifying unit 140 dependent on each input/output terminal 110 according to a preset control algorithm. and amplification gain can be controlled, which will be described later.

On the other hand, the distribution unit 130 is a configuration for transmitting a signal received through one input terminal to the other output terminals, for example, the multi-path repeater 100 as shown in Figure 7, four input and output terminals ( 110), each of the amplification unit 140, the detection unit 150, and the input/output terminal 110 corresponding to each input/output terminal 110 is configured between a set formed, one of them It plays a role in distributing the signal of

To this end, the distribution unit 130 may be implemented as a resistive power distributor as shown in FIG. 8 for example. For reference, in the case of implementing the distribution unit 130 of the multi-path repeater 100 according to an embodiment using a Wilkinson Power Divider as shown in FIG. 9, when transmitting a signal according to inter-layer communication Signal loss may occur due to an isolation characteristic between each port.

As shown in FIG. 9 , the Wilkinson power divider is configured with a transmission line of λ/4 of a center frequency Fo with respect to port 1 and a resistance of 2xZ0 to implement a separation characteristic between ports 2 and 3. However, this configuration may cause a large loss in interlayer communication using the multi-path repeater 100 .

For example, when port 1 is an input and port 2 and port 3 are outputs to different layers, an ideal loss of -3dB can be generated in ports 2 and 3, respectively. However, for example, when an input signal is transmitted through port 2, an output to port 3 corresponding to another layer may be generated by -30 dB or more. Therefore, the power divider used to implement the distribution unit 130 for interlayer communication should have a small separation characteristic between ports 2 and 3.

Accordingly, when power is distributed using a resistor as shown in FIG. 8 again, since a λ/4 transmission line is not used, the separation characteristics between ports 2 and 3 are small, and the power distribution in a wide band is not affected by the frequency characteristic. There is an advantage that it is possible to

Furthermore, the distribution unit 130 is connected to each amplifying unit 140 , and the length of the line connected to the amplifying unit 140 is designed to be the same, so that when the distribution unit 130 distributes or combines, loss and By implementing the same phase, it is possible to minimize a problem that may occur due to an imbalance in the gain between the respective paths.

On the other hand, the amplifier 140 forms a signal transmission path according to whether the input/output terminal 110 is determined as an input terminal or an output terminal, and at the same time a signal received from the input/output terminal 110 or the input/output terminal 110. As a means for selectively amplifying a signal transmitted to , for example, it may be implemented as shown in FIG. 10 .

Based on the direction shown in FIG. 10 , the amplifier 140 may be connected to the distribution unit 130 on the left side and the detection unit 150 on the right side. Accordingly, a signal transmitted from left to right may be a received signal, and a signal transmitted from right to left may be a transmission signal.

In this case, the amplifying unit 140 may connect the detection unit 150 and the distribution unit 130 through a plurality of different paths.

First, the bypass path P1 is a path for transmitting the received signal or the transmitted signal as it is without amplifying it, and only the attenuator 147 may be selectively included in addition to the line on the path. The attenuator 147 simply adjusts only the amplitude to a certain ratio without modifying the waveform of the signal, so that the signal input or transmitted to another device or device has an excessively large amplitude, thereby preventing the device or device from being damaged can do.

The bypass path P1 can be bypassed so that the transmit/receive signal does not pass through the amplification path P2 to be described later in this way, so that the signal can be transferred to another device or device without amplification.

Meanwhile, the amplification path P2 is a path for amplifying a received signal or a transmission signal and transmitting it to the input/output terminal 110 through the detection unit 150 or to the distribution unit 130 .

First, a low-pass filter (LPF: 141) may be provided on the amplification path P2. The low-pass filter 141 serves to filter a high-frequency component of a received signal or a transmitted signal. Then, the automatic level controller (ALC: 142) monitors the transmit/receive signal to give more amplification to a weak signal and less amplification to a strong signal so that the signal is constant. In addition, the low-noise amplifier (LNA: 143) may primary amplify the transmit/receive signal while minimizing noise, and filter out unnecessary frequency band signals from the amplified transmit/receive signal through a bandpass filter (BPF: 144). On the other hand, after the transmission/reception signal is amplified once again through the power amplifier (PA: 145), the high-frequency harmonic signal generated in the amplification process is again removed through the low-pass filter (LPF: 146). At this time, the low noise amplifier 143 is not located at the front end of the amplification path P2, but at the rear end of the automatic level controller 142, so that even when the amplitude of the received signal transmitted through the detection unit 150 is excessively large, By being protected by the level controller 142, damage to the low-noise amplifier 143 can be prevented.

Meanwhile, a forward link L1 and a reverse link L2 may be formed in the amplifying unit 140 . The forward link (L1) allows the transmission signal transmitted from the input/output terminal 110 side to pass through the amplification path P2, and the reverse link (L2) is the amplification path (P2) for the reception signal transmitted from the distribution unit 130. to pass through

To this end, the forward link (L1) first, the first forward link (L1a) for transferring the transmission signal to the front end of the amplification path (P2), and the rear end of the amplification path (P2) the transmission signal passing through the amplification path (P2) It may include a second forward link (L1b) delivered to the distribution unit (130).

In addition, the reverse link (L2) first, the first reverse link (L2a) for transferring the received signal transmitted through the distribution unit 130 to the front end of the amplification path (P2), and the received signal passing through the amplification path (P2) It may include a second reverse link (L2b) transmitted to the input/output terminal 110 side through the detection unit 150 .

In this case, a total of four switches SW1 to SW4 may be provided in the amplification unit 140 . The first switch SW1 is provided at one end of the amplification unit 140 connected to the detection unit 150 and connects the bypass path P1, the amplification path P2, or the second reverse link L2b to the input/output terminal 110 ) can be optionally connected to the side.

And the second switch SW2 is provided at the front end of the amplification path P2, and connects the amplification path P2 with the first forward link L1a through the first switch SW1 so that the transmission signal is transmitted through the amplification path P2. ), or by connecting the amplification path P2 with the first reverse link L2a, the received signal transmitted from the distribution unit 130 through the fourth switch SW4 to be described later is transmitted to the amplification path P2. to pass through That is, the second switch SW2 may allow a transmission signal or a reception signal to be input to the amplification path P2 .

On the other hand, the third switch SW3 is provided at the rear end of the amplification path P2, and connects the amplification path P2 with the second forward link L1b, so that the transmission signal passing through the amplification path P2 is distributed to the distribution unit ( 130), or by connecting the amplification path P2 with the second reverse link L2b, the received signal passing through the amplification path P2 is transmitted to the input/output terminal 110 through the first switch SW1 can make it happen That is, the third switch SW3 may output a transmission signal or a reception signal via the amplification path P2 in a different configuration.

Furthermore, the fourth switch SW4 is provided at the other end of the amplification unit 140 connected to the distribution unit 130 , and the bypass path P1 , the amplification path P2 or the first reverse link L2a and the distribution unit 130 may be selectively connected.

As such, the amplification unit 140 includes a bypass path (P1), an amplification path (P2), a forward link (L1) and a reverse link (L2), so that the direction of signal transmission and whether the signal is amplified can be variously adjusted. have. To this end, the amplifier 140 may have a plurality of different operation modes under the control of the controller 120 .

However, the path configuration of the amplification unit 140 divided into the bypass path P1, the amplification path P2, the forward link L1 and the reverse link L2 as described above is only one embodiment, and it cannot be replaced. There are other ways to set the path.

Meanwhile, the reason why the operation mode of bypassing the transmission/reception signal without amplification is included in the operation mode of the amplifying unit 140 at this time will be described with reference to FIG. 11 .

As shown in FIG. 11 , two or more multi-path repeaters 100 may be provided in one relay system according to an embodiment. At this time, when there is no line loss in the sections indicated by ① and ②, respectively, when each multi-path repeater 100 amplifies the signal, a problem may occur due to excessive oscillation and amplification during system operation. Therefore, in sections ① and ② of the multi-path repeater 100 located in the middle, the amplifier 140 inside the multi-path repeater 100 bypasses the received signal and the transmit signal without amplification, so that the transmit/receive signal is transmitted to a plurality of multi-path repeaters. Even through (100), it is preferable to transmit as it is without excessive amplification or oscillation.

Therefore, the above-described amplifying unit 140 selectively amplifies the transmission/reception signal including the bypass path P1, thereby realizing a stable operation of the system.

On the other hand, if the operation mode of the amplifying unit 140 is described in detail, first, as shown in FIG. 12 , the amplifying unit 140 detours the transmission signal TX or the reception signal RX along the bypass path P1. It can operate according to the operation mode. That is, the amplifier 140 may operate in a TX/RX bypass mode in which the transmission signal TX and the reception signal RX are bypassed along the bypass path P1 . At this time, the first switch SW1 and the fourth switch SW4 are both connected by the bypass path P1, and the distribution unit 130 and the detection unit 150 are operated to be substantially connected through the bypass path P1. can do.

That is, when the transmission signal TX or the reception signal RX must be transmitted without amplification, for example, when a signal greater than a set value is received, or the amplifier 140 already provided on the other input/output terminal 110 side. ), the amplification unit 140 may operate in a TX/RX bypass mode.

For example, in the embodiment shown in FIG. 11 , the amplifier 140 provided on the side of the input/output terminal 110 connected to the sections ① and ② may operate in the TX/RX bypass mode.

Meanwhile, the amplification unit 140 of the multi-path repeater 100 may operate in a TX amplification mode as shown in FIG. 13 . That is, the amplification unit 140 transmits the transmission signal TX, and amplifies the transmission signal TX through the amplification path P2 through the forward link L1 and then transmits it to the distribution unit 130 . It can operate in TX amplification mode.

In this case, the first switch SW1 is connected to the second switch SW2 located at the tip of the amplification path P2 through the first forward link L1a, and the second switch SW2 is also connected to the first switch ( SW1) and the first forward link (L1a) connected to the short circuit.

Meanwhile, the third switch SW3 is shorted toward the second forward link L1b and connected to the fourth switch SW4, and the fourth switch SW4 is a second forward link L1b provided with the third switch SW3. ) is connected to the rear end of

Through this, the transmission signal TX transmitted from the detection unit 150 may be amplified through the amplification path P2 and then transmitted to the distribution unit 130 .

Meanwhile, referring to FIG. 14 , the amplification unit 140 of the multi-path repeater 100 may operate in the RX amplification mode. The amplification unit 140 induces the reception signal RX transmitted through the distribution unit 130 to the amplification path P2 through the first reverse link L2a, and the reception signal through the amplification path P2 again. (RX) may be operated in an RX amplification mode in which the signal is transmitted to the detector 150 through the second reverse link L2b.

To this end, the fourth switch SW4 of the amplifying unit 140 may be connected to the first reverse link L2a, and the second switch SW2 may be connected to the rear end of the first reverse link L2a.

Meanwhile, the third switch SW3 switched between the second forward link L1b and the second reverse link L2b at the rear end of the amplification path P2 may be shorted to the front end of the second reverse link L2b.

Furthermore, the first switch SW1 may be switched to the rear end of the second reverse link L2b.

As a result, as shown by a broken line in FIG. 14 , the received signal RX is guided to the first reverse link L2a through the fourth switch SW4 and then to the amplification path P2 through the second switch SW2 again. is transmitted from the third switch SW3 to the second reverse link L2b after passing through the amplification path P2, and then transferred to the detection unit 150 through the first switch SW1 and finally the input/output terminal ( 110) can be output.

As described above, the amplification unit 140 determines whether the input/output terminal 110 corresponding to the amplification unit 140 functions as either an input terminal or an output terminal, and the need for amplification based on one point of view as described above. Therefore, each amplifier 140 operates in one of the 'TX/RX bypass mode', 'TX amplification mode', and 'RX amplification mode'.

In this case, the operation mode of each of the plurality of amplifiers 140 included in one multi-path repeater 100 may be determined by the controller 120 . The control unit 120 may switch the mode of each amplification unit 140 according to a signal detection result of the detection unit 150 provided in each input/output terminal 110 .

Meanwhile, according to one embodiment, the mode of the amplification unit 140 is determined by the control unit 120 as any one of the 'TX/RX bypass mode', 'TX amplification mode', and 'RX amplification mode' in real time. may be However, in another embodiment, the operation mode of each amplifying unit 140 may be predetermined with respect to the transmission signal TX and the reception signal RX, respectively. For example, the operation mode when the amplifier 140 transmits the transmission signal TX and the operation mode when the reception signal RX is transmitted are preset, respectively, so that 'TX/RX bypass mode', ' It can be preset to one of 'TX amplification/RX amplification mode', 'TX bypass/RX amplification mode', and 'TX amplification/RX amplification mode'.

In the latter embodiment, depending on the environment in which the multi-path repeater 100 is configured in the system, whether to bypass or amplify the transmission signal TX for each amplifier 140 , and the reception signal RX Whether to bypass or amplify can be set in advance. Accordingly, when the corresponding amplifier 140 corresponds to the input terminal during actual operation, the control unit 120 operates in any one of the TX bypass mode or the TX amplification mode, and the corresponding amplifier 140 is connected to the output terminal. Correspondingly, it can operate in a predetermined one of the RX bypass mode and the RX amplification mode.

For example, when the specific amplifying unit 140 is preset to 'TX amplification/RX bypass mode', when the input/output terminal 110 corresponding to the amplifying unit 140 is determined as the input terminal, it operates in the TX amplification mode. and when functioning as an output terminal, it can operate in RX bypass mode.

The 'TX/RX bypass mode' is an operation mode that bypasses both the transmit signal (TX) and the receive signal (RX). For example, when several multi-path repeaters 100 are connected, excessive amplification is repeatedly performed. At least a part of the amplification unit 140 may be set to such an operation mode so as not to be lost.

The 'TX amplification/RX bypass mode' is an operation mode that amplifies the transmit signal (TX) and bypasses the receive signal (RX). ) is used to amplify only

The 'TX bypass/RX amplification mode' is an operation mode that bypasses the transmission signal (TX) and amplifies only the reception signal (RX). When the system operates, the gain of the reception signal (RX) path is sufficiently secured, so that the reception signal (RX) ) can be used when amplification is not required.

And ‘TX amplification/RX amplification mode’ is an operation mode that amplifies both the transmit signal (TX) and the receive signal (RX). Only one multi-path repeater 100 may be configured or used in general system operation.

However, as described above, the control unit 120 may determine the mode of each amplifying unit 140 in real time according to the detection result of the signal input to each input/output terminal 110 except for the above embodiments.

In addition, the control unit 120 may switch the operation mode of the amplifying unit 140 by switching the switches SW1 to SW4 provided in the amplifying unit 140 according to a predetermined mode.

A method for the control unit 120 to determine the mode of the amplifying unit 140 will be described in more detail later.

Meanwhile, the detection unit 150 is configured to correspond to each input/output terminal 110 as shown in FIG. 3 and monitors a signal input to the input/output terminal 110 . For example, in the embodiment shown in FIG. 7 , each detection unit 150 is provided between the input/output terminal 110 and the amplification unit 140 through the amplifier 140 centered on the distribution unit 130 , respectively. can At this time, the detection unit 150 may receive a signal input to the input/output terminal 110 through a coupler (not shown) provided between the input/output terminal 110 and the amplifier 140 .

That is, the input/output terminal 110 may be respectively connected to the amplifier 140 and the detection unit 150 . To this end, a line between the amplification unit 140 and the input/output terminal 110 may be branched to the detection unit 150, and a device such as a coupler may be additionally configured for signal distribution.

The detection unit 150 detects the input signal to each input/output terminal 110 in real time and transmits it to the control unit 120 , and the control unit analyzes the input signal of each input/output terminal 110 , and among the plurality of input/output terminals 110 . Decide on only one input.

To this end, the detection unit 150 serves to process the input signal and transmit it to the control unit 120 .

Such a configuration of the detection unit 150 may be implemented in various ways according to embodiments.

For example, as shown in FIG. 15 , the detection unit 150 may be implemented in a direct detection method. As a method of detecting a signal without changing the frequency of the input signal, the circuit structure is simple and the unit cost is low. In FIG. 15 , the detection unit 150 receives the RF signal received through the input/output terminal 110 as an input signal, detects the strength of the signal, converts the detected signal into a digital signal, and transmits it to the control unit 120 . It works.

Meanwhile, in another embodiment, as shown in FIG. 16 , the detection unit 150 ′ may be implemented in a down-converting detection method. As a method of detecting the level of a signal after converting the frequency of an input signal to a low frequency band, the frequency band of the signal is reduced to a low band, for example, 400 MHz input using a mixer and an oscillator that generates a signal. After changing the signal to the 10MHz band, the level of the signal is detected. According to this, there is an advantage in that it is possible to detect a signal of a relatively low level compared to the direct detection method.

In FIG. 16 , the detection unit 150 ′ receives an RF signal as an input signal, detects the strength of the signal after changing the frequency band, converts the detected signal into a digital signal, and transmits it to the control unit 120 .

Accordingly, the control unit 120 may compare the intensity of the signal detected at each input/output terminal 110 , and may determine one of the plurality of input/output terminals 110 as an input and the other as an output.

Meanwhile, in the above embodiments, the detection units 150 and 150 ′ use a plurality of filters, for example, a band pass filter (BPF) or a surface acoustic wave filter (SAW filter) to detect only a signal of a specific frequency band. and the like. Accordingly, it is possible to detect only a signal within a predetermined frequency band for short-term communication.

Hereinafter, the operation of the multi-path repeater 100 described above with reference to FIG. 17 will be described in detail. 17 is a flowchart illustrating a method of relaying signals through multi-paths performed by the multi-path repeater 100 step by step. In addition, FIG. 18 is a flowchart illustrating step S200 in more detail in the method for relaying a signal through the multipath shown in FIG. 17, and FIG. 19 is a multipath for explaining the method for relaying a signal through the multipath shown in FIG. It is an exemplary diagram of a system configuration including a repeater.

The signal relaying method through the multipath according to the embodiment shown in FIGS. 17 and 18 includes steps processed in time series by the multipath repeater 100 described with reference to FIGS. 1 to 16 . Therefore, even if omitted below, the content described above with respect to the multi-path repeater 100 described with reference to FIGS. 1 to 16 is signal relaying through the multi-path according to the embodiment shown in FIGS. 17 to 18 . method can also be applied.

First, the signal relay method through the multi-path will be sequentially described with reference to FIG. 17. The multi-path repeater 100 detects the input signals of all input/output terminals 100 included in the multi-path repeater 100 (S100) . At this time, the multi-path repeater 100 corresponds to a 'standby state'. The multi-path repeater 100 operates while transitioning between the 'standby state' and the 'signal relay state'. is made in

The multi-path repeater 100 operates as follows in the standby state. First, the control unit 120 may control all switches configured in the amplification unit 140 to be in an OFF state.

In the standby state, the control unit 120 sets the attenuation level of the attenuator ATT provided in the amplification unit 140 to a maximum value to sufficiently attenuate an input signal of an excessive size and then detect it. Furthermore, the control unit 120 may set the amplification gain of the amplifier AMP in the amplification unit 140 to a minimum value in the standby state. In addition, the control unit 120 operates all the components of the detection unit 150, for example, an attenuator (ATT), an amplifier (AMP), a detector (DET), and an analog-to-digital converter (ADC) in a standby state. state can be controlled.

The multi-path repeater 100 detects input signals to all input/output terminals 110 using the detection unit 150 provided in each input/output terminal 110 in the standby state as described above.

And the multi-path repeater 100 determines the input/output direction based on the level of the input signal detected at each input/output terminal 110 (S200). Specifically, the control unit 120 may receive the level value of the input signal from each detection unit 150 and select which input/output terminal 110 is to be determined as the input terminal.

Looking at step S200 in more detail, as shown in FIG. 18 , the control unit 120 may preset the level of the input signal detected from each input/output terminal 110 and compare it with a stored threshold value (S210). In this case, the threshold value may be set to determine whether the signal level of a specific frequency band received by the input/output terminal 110 corresponds to a level at which the signal detected at the input/output terminal 110 can be determined as an actual input. . To this end, the threshold value may be selected as a level corresponding to the minimum level of the input signal when radio signals are exchanged in an actual communication environment.

The control unit 120 of the multi-path repeater 100 then compares again only the input signals whose signal level is equal to or greater than the threshold value among the input signals detected at each input/output terminal 110, and among the input signals whose signal level is equal to or greater than the threshold value, An input signal of the highest level may be selected (S220). In this case, the controller 120 may store the level of the selected input signal.

On the other hand, the multi-path repeater 100 may return to step S100 of FIG. 17 again while maintaining the standby state when the level of each input signal compared with the threshold value in step S210 is all less than the threshold value.

Subsequently, the multi-path repeater 100 may determine the input/output terminal 110 corresponding to the input signal selected in step S220 as the input terminal (S230). Accordingly, the multi-path repeater 100 may determine all of the remaining input/output terminals 110 as output terminals. Also, by determining the input terminal and the output terminal, the signal input/output direction in the multi-path repeater 100 may be determined.

And when the input/output direction of the signal is determined as described above, the controller 120 of the multi-path repeater 100 may determine the operation mode of each amplifying unit 140 ( S240 ).

For example, in the embodiment shown in FIG. 7 , when input/output terminal 3 is determined as an input terminal, the remaining input/output terminals 1, 2, and 4 may all be set as output terminals. Accordingly, the amplifier 3 may be set to an operation mode for transmission of the transmission signal TX, and the amplifiers 1, 2, and 4 may be set to an operation mode for transmission of the reception signal RX.

At this time, the amplification unit 3 is, for example, set to a 'TX amplification mode' for amplifying and delivering the transmission signal TX, or set to a 'TX/RX bypass mode' for bypassing the transmission signal TX. can In addition, the amplifiers 1, 2, and 4 can be set to 'RX amplification mode' to amplify and transmit the received signal (RX), or set to 'TX/RX bypass mode' to bypass the received signal (RX). have.

At this time, the controller 120 may determine whether to set the operation mode of the amplifier 3 to the 'TX amplification mode' or the 'TX/RX bypass mode' based on the level value of the input signal stored in step S220. Also, when the amplification mode is selected, the amplification gain can be set.

Alternatively, the controller 120 may determine the operation modes of the amplifiers 1 to 4 based on a preset operation mode for each of the amplifiers 140 according to an embodiment. For example, when the 'TX/RX amplification mode' is set in advance for the amplification unit 1, the control unit 120 corresponds to the output terminal, thereby 'RX' the amplification unit 1 serving as a path for transmitting the received signal RX. It can be decided to operate in 'amplification mode'. Of course, at this time, if the amplifier 1 is an input terminal, the control unit 120 may select the 'TX amplification mode' from the preset 'TX/RX amplification mode'.

In this case, in order for the control unit 120 to select an operation mode of the amplifying unit 140 and preset or control the amplification gain of the amplifying unit 140, a control policy according to each condition may be preset by a control algorithm. have.

Meanwhile, in step S220, the multi-path repeater 100 repeats the process of selecting the input signal of the highest level among the input signals, so that the input signal of the highest level is again input from the input/output terminal 110 corresponding to the once selected input signal. Only when a signal is sensed, the corresponding input/output terminal 110 may be determined as the input terminal.

That is, in the process of detecting an input signal according to an embodiment and determining one input terminal accordingly, the control unit 120 selects an input signal having the highest level among input signals having a level greater than or equal to the threshold value several times. Iteratively, the input terminal can be determined.

On the other hand, again in FIG. 17, after the input/output direction of the signal and the operation mode of each amplification unit are determined by step S200, the multi-path repeater 100 controls the overall operation of the multi-path repeater 100 as determined. can be (S300).

That is, the control unit 120 may allow a predetermined operation mode to be applied to each amplifying unit 140 . The switches included in the amplifier 140 are switched according to the operation mode.

As such, in step S300, when the control of the circuit element is completed according to the signal input/output direction determined in step S200, the multi-path repeater 100 transitions to the signal relay state (S400). At this time, the signal relay state is a state in which a signal received from one input terminal determined according to the state controlled in step S300 is relayed to the other output terminals. The operation of the remaining detector 150 except for 150 may be stopped (S500). Also, in the signal relay state, the controller 120 may set an automatic level controller (ALC) or an attenuator (ATT) according to the level of the input signal detected from the input terminal.

On the other hand, the multi-path repeater 100 may continuously monitor whether the level of the input signal is less than a threshold value in such a signal relay state (S600). Accordingly, when the level of the input signal decreases below the threshold value, the multi-path repeater 100 may again transition to the standby state and repeat the operation from step S100 .

At this time, in step S600, the multi-path repeater 100 repeats the process of detecting the level of the input signal again and comparing it with the threshold value several times even if it is detected that the level of the input signal is less than the threshold value, so that the level of the input signal is continuously the threshold It may transition to the standby state only when it is detected below the value.

In this way, the multi-path repeater 100 is provided with the detector 150 in all of the plurality of input/output terminals 110, monitors the input signal levels of all terminals, and selects one input terminal through this to relay short-term communication. can

Meanwhile, in the signal relay method using the multi-path described above, the multi-path repeater 100 may determine the mode of each amplifier 140 differently according to the system configuration in performing step S200.

For example, as shown in FIG. 19 , the multi-path repeater 100 may be configured as a cascade connection room in the relay system. As shown in the figure, when three 1:3 multi-path repeaters 100 are installed in succession, when an input signal of the largest level is detected in the first multi-path repeater 100-1 on the left, the first multi-path repeater 100-1 The terminal at which the corresponding signal is detected in the path repeater 100-1 becomes an input terminal, and the remainder becomes an output terminal.

And the input/output terminal of the second multi-path repeater 100-2 connected to the output terminal of the first multi-path repeater 100-1 becomes an input terminal, the remaining terminals become an output terminal, and the second multi-path repeater ( The input/output terminal of the third multi-path repeater 100-3 connected to the output terminal of 100-2) becomes an input terminal again, and all others become output terminals.

As such, even when the multi-path repeaters 100 are sequentially connected, one input terminal is selected for each multi-path repeater 100 and the rest functions as output terminals, so that transmission and reception are performed using the same frequency band. Not only short-distance communication is possible, but communication with a wide coverage can be relayed using only a small number of repeaters. In addition, any input/output terminal becomes an input terminal and the rest becomes an output terminal, so that all signals generated in a specific area can be received in the remaining areas, thereby improving the function of the disaster network.

Meanwhile, as another example, as shown in FIG. 20 , when a total of five 1:3 multi-path repeaters 100 are installed in a cross shape in the system, when an input is generated from the first multi-path repeater 100-1, the input Only one input/output terminal from which a signal is detected becomes an input terminal, and all other input/output terminals output the input signal.

And the input/output terminal of the second multi-path repeater 100-2 connected to the output terminal of the first multi-path repeater 100-1 becomes an input terminal, one input terminal for each multi-path repeater 100 and three output terminals may be variably formed.

In addition, each multi-path repeater 100 controls the amplifier 140 according to the input/output direction determined in this way, so that the path of the input/output signal may be varied depending on whether an input signal of the highest level is detected from which terminal. .

Further, according to the embodiment, the controller 120 of the plurality of multi-path repeaters 100 is configured to exchange signals with each other, or a controller (not shown) that communicates with the plurality of multi-path repeaters 100, respectively, is configured in the system. can In this case, the controller 120 configured in each multi-path repeater 100 or a separately configured controller operates the amplifying unit 140 according to the input/output direction of each multi-path repeater 100 or whether the signal is amplified or not. mode can be controlled.

On the other hand, in a system including the multi-path repeater 100 as described above, the operation mode of the amplifier included in each multi-path repeater 100, the amplification gain, etc. are the system configuration or operating environment in which the multi-path repeater 100 is installed. may be set differently. At this time, it is important to improve the durability of the device by the optimal operation mode and amplification gain and to accurately relay signals to the mobile station, that is, the wireless communication terminal.

To this end, as shown in FIG. 21 , the control algorithm of the multi-path repeater 100 included in the system may be trained to exhibit optimal efficiency. 21 is a flowchart for explaining a method of controlling an amplifier mode of each repeater included in the system by learning a mobile station signal in a signal repeater system including a multi-path repeater, and FIG. 22 is a multi-path repeater for learning It is a conceptual diagram to explain the artificial intelligence model.

First, as shown in FIG. 21, in the method of controlling the amplifier mode of each repeater included in the system by learning the mobile station signal, first configuring a system including one or more multi-path repeaters 100 in an actual installation environment It can be started from the step (S1000).

In step S1000, for example, as shown in FIG. 19 , a total of three 1:3 multi-path repeaters 100 may be arranged in a line to configure one system. In this case, for example, each input/output terminal may cover each closed area. For example, one input/output terminal may serve to transmit/receive signals in a separate area such as the first basement floor and the other input/output terminal on the second basement floor.

With the system and environment configured in this way, a wireless signal can be transmitted and received using a plurality of mobile stations, that is, a wireless communication terminal (S2000). In this case, the location of each mobile station, the signal transmission/reception state of each mobile station, and the radio signal generated by the mobile station transmitting the signal may be specifically recorded.

Then, each multi-path repeater 100 detects a radio signal generated by the mobile station, controls the operation mode of each amplification unit 140 according to the control algorithm set in the control unit 120 in advance, and adjusts the amplification gain. The signal is relayed (S3000).

Here, the control algorithm may be an artificial intelligence model that is learned by the method described with reference to FIG. 21 to establish an optimal control policy. For example, it may be configured by including a DQN in which other artificial neural networks are combined with Q-network, which is a reinforcement learning model.

Next, as a result of the signal relay, the reception signal received by each mobile station is detected again (S4000). In this case, in step S4000, the level of the received signal or the signal-to-noise ratio may be detected.

In step S5000, it may be checked whether the level or signal-to-noise ratio of the received signal detected by the mobile station is within a preset target range. In this case, when the plurality of mobile stations receive signals at different positions, it can be checked whether the received signals of each mobile station are within a preset target range.

If it is confirmed that the received signals are all within the target range as a result of several tests, the control algorithm of the control unit 120 of the multi-path repeater 100 may be determined as the current state (S7000).

However, if the received signal detected in step S5000 is out of the target range, for example, if the level of the received signal is excessively small or large, or if there is a lot of noise, the control algorithm of the multi-path repeater 100 may be modified. (S6000). For example, the operation mode of the specific amplifier 140 is switched or the amplification gain is adjusted.

Also, for example, when the signal received from the mobile station on the first basement level was within the target range, but the signal received from the mobile station on the second basement floor has a signal level less than the target value, it is connected to the input/output terminal 110 corresponding to the second basement floor. The control algorithm of the multi-path repeater 100 may be modified according to the detected pattern of the received signal, such as adjusting the amplification gain of the amplifier 140 .

By repeating steps S2000 to S6000 over a sufficiently large number of times in various situations, such as moving a plurality of mobile stations, adjusting generated signals, and changing mobile stations that transmit and receive signals, each multi-path repeater 100 Training can be performed until the control algorithm is optimized.

Meanwhile, an embodiment of the above-described control algorithm will be described with reference to FIG. 22 . 22 is a conceptual diagram illustrating a typical reinforcement learning model. 22 , the reinforcement learning model included in the control algorithm according to an embodiment may include an agent and an environment. Here, the agent is 'reinforcement learning' that optimizes the policy for determining the action (At) by referring to the 'policy' generally configured by artificial neural networks or lookup tables, and the state information (St) and reward information (Rt) given from the environment. Algorithm' may be included. At this time, the reinforcement learning algorithm improves the policy by referring to the state information (St) obtained by observing the environment, the reward (Rt) given when the state is improved in the desired direction, and the action (At) output according to the policy. .

And this process is repeatedly performed for each step, and hereinafter, a step corresponding to the present is indicated by t, a next step is indicated by t+1, and the like.

In one embodiment, the multi-path repeater 100 is a place where the system including the multi-path repeater 100 is configured, for example, a building as an environment, and a value such as a level of a received signal received by a mobile station in such an environment The operation mode of the amplification unit 140 according to the preset, condition or the amplification gain is set as the action (At), and the status information (St) such as the level of the received signal is improved when the status information (St) is improved. Rt) may be provided.

In this way, the controller 140 of the multi-path repeater 100 determines the input terminal, controls the operation mode of each amplifier 140, and relays the signal while adjusting the amplification gain, and in this process, the optimal signal relay is performed. For this purpose, it may include an artificial intelligence model that adaptively learns to the environment as described above.

The term '~ unit' used in the above embodiments means software or hardware components such as field programmable gate array (FPGA) or ASIC, and '~ unit' performs certain roles. However, '-part' is not limited to software or hardware. '~unit' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors. Thus, as an example, '~' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program patent code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.

Functions provided in components and '~ units' may be combined into a smaller number of components and '~ units' or separated from additional components and '~ units'.

In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

The signal relay method according to the embodiment described with reference to FIGS. 17 to 22 may also be implemented in the form of a computer-readable medium for storing instructions and data executable by a computer. In this case, the instructions and data may be stored in the form of program codes, and when executed by the processor, a predetermined program module may be generated to perform a predetermined operation. In addition, computer-readable media can be any available media that can be accessed by a computer, and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer readable medium may be a computer recording medium, which is a volatile and non-volatile and non-volatile embodied in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. It may include both volatile, removable and non-removable media. For example, the computer recording medium may include magnetic storage media such as HDD and SSD, optical recording media such as CD, DVD and Blu-ray disc, or accessible through a network. It may be memory included in the server.

In addition, the signal relay method using the multipath according to the embodiment described with reference to FIGS. 17 to 22 may be implemented as a computer program (or computer program product) including instructions executable by a computer. The computer program includes programmable machine instructions processed by a processor, and may be implemented in a high-level programming language, an object-oriented programming language, an assembly language, or a machine language. . In addition, the computer program may be recorded in a tangible computer-readable recording medium (eg, a memory, a hard disk, a magnetic/optical medium, or a solid-state drive (SSD), etc.).

Therefore, the signal relay method using the multipath according to the embodiment described with reference to FIGS. 17 to 22 may be implemented by executing the computer program as described above by the computing device. The computing device may include at least a portion of a processor, a memory, a storage device, a high-speed interface connected to the memory and the high-speed expansion port, and a low-speed interface connected to the low-speed bus and the storage device. Each of these components is connected to each other using various buses, and may be mounted on a common motherboard or in any other suitable manner.

Here, the processor may process commands within the computing device, such as for displaying graphic information for providing a Graphical User Interface (GUI) on an external input or output device, such as a display connected to a high-speed interface. Examples are instructions stored in memory or a storage device. In other embodiments, multiple processors and/or multiple buses may be used with multiple memories and types of memory as appropriate. In addition, the processor may be implemented as a chipset formed by chips including a plurality of independent analog and/or digital processors.

Memory also stores information within the computing device. As an example, the memory may be configured as a volatile memory unit or a set thereof. As another example, the memory may be configured as a non-volatile memory unit or a set thereof. The memory may also be another form of computer readable medium such as, for example, a magnetic or optical disk.

In addition, the storage device may provide a large-capacity storage space to the computing device. The storage device may be a computer-readable medium or a component comprising such a medium, and may include, for example, devices or other components within a storage area network (SAN), a floppy disk device, a hard disk device, an optical disk device, Alternatively, it may be a tape device, a flash memory, or other semiconductor memory device or device array similar thereto.

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims below rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

Claims (9)

A signal relay system including a multi-path repeater including a plurality of input/output terminals, wherein one of the plurality of input/output terminals is an input terminal and the other is an output terminal according to the level of an input signal detected from the plurality of input/output terminals carried out by
detecting each input signal of the plurality of input/output terminals in a standby state;
determining an input/output direction in which one input/output terminal among the plurality of input/output terminals is an input terminal and the other input/output terminals are output terminals based on the detected level of the input signal; and
Entering a signal relay state and relaying a signal by controlling the multi-path repeater to operate according to the determined input/output direction,
The multi-path repeater,
The plurality of input/output terminals, a detection unit for detecting input signals of each of the plurality of input/output terminals, and a signal transmitted/received between the plurality of input/output terminals and the distribution unit are provided between the plurality of input/output terminals and the following distribution unit, respectively. A plurality of amplification units for selectively amplifying, and a distribution unit provided between the plurality of amplification units to distribute a signal transmitted from an arbitrary amplification unit and transmit it to the remaining amplification units,
The step of relaying the signal is
and controlling an operation mode of the plurality of amplifiers to vary the signal transmission direction and signal amplification of the amplifier according to the determined input/output direction. According to claim 1,
The signal relay method,
detecting only the input signal of the input terminal among the plurality of input/output terminals in the signal relay state; and
A signal relay method comprising the step of selectively amplifying a relayed signal based on the detected input signal. According to claim 1,
The signal relay method,
detecting only the input signal of the input terminal among the plurality of input/output terminals in the signal relay state; and
and when the level of the input signal detected at the input terminal decreases below a preset threshold, stopping signal relay and transitioning to the standby state. According to claim 1,
The step of determining the input/output direction includes:
A signal relay method comprising the step of determining an input/output terminal from which an input signal having the largest signal level among input signals having a signal level detected at each input/output terminal equal to or greater than a threshold value is detected as an input terminal. delete According to claim 1,
The step of relaying the signal is
and controlling the plurality of amplifiers using a control algorithm defined to control the operation modes of the plurality of amplifiers and the amplification gains of the plurality of amplifiers according to a preset condition. 7. The method of claim 6,
The signal relay method,
generating a signal while operating a plurality of mobile stations in a state in which a signal relay system including the multi-path repeater is configured;
controlling the multi-path repeater according to the control algorithm, and detecting the received signals relayed according to the operation mode of the plurality of amplifiers and received by the plurality of mobile stations;
A signal relay method comprising training an artificial neural model included in the control algorithm according to the detected received signal. A computer-readable recording medium in which a program for performing the method according to claim 1 is recorded. A computer program stored in a medium for performing the method according to claim 1 performed by a signal relay system comprising one or more multi-path repeaters.

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