JP2009021849A - Wireless relay apparatus and relay unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless relay apparatus enabling the cost thereof due to a change in a frequency band to be reduced. <P>SOLUTION: A relay unit 3 can be mounted to and demounted from a mounting/demounting part 4. Furthermore, while the relay unit 3 is mounted at the mounting/demounting part 4, the relay unit extracts a first frequency band signal of a predetermined frequency band from a signal received by an outdoor antenna part 1 and relays the first frequency band signal to an indoor antenna part 21. Moreover, the relay unit 3 extracts a second frequency band signal of the predetermined frequency band from a signal received by the outdoor antenna part 1 and relays the second frequency band signal to the indoor antenna part 21. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wireless relay device and a relay unit for eliminating a dead zone.

  In a mobile communication system using a mobile terminal such as a mobile phone, a technique for eliminating the dead zone has been proposed. The dead zone is an area where radio signals do not reach. Examples of the dead zone include private houses, high-rise apartments, and underground shopping areas.

  A technique for eliminating the dead zone includes a repeater device that relays communication. Patent Document 1 describes a mobile communication relay system that realizes a repeater device.

  This mobile communication relay system includes an indoor communication auxiliary device and an external communication auxiliary device. The indoor communication auxiliary device transmits / receives signals to / from the mobile terminal wirelessly, and the external communication auxiliary device transmits / receives signals to / from the base station wirelessly. The indoor communication auxiliary device and the external communication auxiliary device are connected by indoor wiring. The portable terminal transmits and receives signals to and from the base station via the indoor communication auxiliary device and the external communication auxiliary device.

Thus, if the indoor communication auxiliary device is arranged in the dead zone and the external auxiliary communication device is arranged outside the dead zone, the dead zone can be eliminated.
JP 2006-80745 A

  The repeater device is provided with a filter that extracts a signal of a predetermined frequency band from the received signal according to the frequency band of the signal transmitted and received by the mobile terminal.

  The frequency band of signals transmitted and received by the mobile terminal may be changed due to revisions to laws and systems relating to radio. Moreover, the frequency band which eliminates a dead zone may be changed.

  Conventionally, when the frequency band is changed, the repeater device has to be replaced. For this reason, the problem that cost becomes large arises.

  An object of the present invention is to provide a radio relay apparatus and a relay unit that solve the above-described problem that the cost of changing a frequency band increases.

  The wireless relay device of the present invention is detachable from a terminal side communication unit that wirelessly transmits and receives signals to and from a mobile terminal, a base station side communication unit that wirelessly transmits and receives signals to and from a base station, a detachable portion, and the detachable portion. Yes, when the base station side communication unit is attached to the desorption unit, a first frequency band signal of a predetermined frequency band determined according to its own unit is extracted from the signal received by the base station side communication unit, and the first frequency Relay the band signal to the terminal side communication unit, extract the second frequency band signal of the predetermined frequency band from the signal received by the terminal side communication unit, and transmit the second frequency band signal to the base station side And a relay unit that relays to the communication unit.

  Further, the relay unit of the present invention is a relay unit that can be attached to and detached from the above-described wireless relay device, and when it is attached to the wireless relay device, from the signal received by the base station side communication unit, A first frequency band signal of a predetermined frequency band determined according to the frequency is extracted, the first frequency band signal is relayed to the terminal side communication unit, and the predetermined frequency band is received from the signal received by the terminal side communication unit. A second frequency band signal of the frequency band is extracted, and the second frequency band signal is relayed to the base station side communication unit.

  According to the present invention, it is possible to reduce the cost for changing the frequency band.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a repeater device according to a first embodiment of the present invention. The repeater device is a wireless relay device that relays communication between the base station and the mobile terminal.

  In FIG. 1, the repeater device includes an outdoor antenna unit 1, an indoor antenna unit 2, a relay unit 3, and a detaching unit 4.

  The outdoor antenna unit 1 is a base station side communication unit that wirelessly transmits and receives signals to and from the base station.

  The indoor antenna unit 2 is a terminal-side communication unit that transmits and receives signals to and from the mobile terminal wirelessly.

  The relay unit 3 is a unit that can be attached to and detached from the attaching / detaching portion 4. When the relay unit 3 is attached to the attaching / detaching portion 4, the following processing is performed.

  That is, the relay unit 3 extracts a first frequency band signal of a predetermined frequency band determined according to the unit from a signal received by the indoor antenna unit 2 (hereinafter referred to as a terminal signal), and the first frequency The band signal is relayed to the outdoor antenna unit 1.

  Further, the relay unit 3 extracts a second frequency band signal of the predetermined frequency band from a signal received by the outdoor antenna unit 1 (hereinafter referred to as a base station signal), and the second frequency band signal is extracted from the indoor antenna unit. Relay to 21.

  The relay unit 3 is detachable from the detachable portion 4. In FIG. 1, a state where the relay unit 3 is attached to the detachable portion 4 is shown.

  Next, the operation will be described. The case where the relay unit 3 is attached to the detachable portion 4 will be described.

  First, the operation in the downlink direction will be described. The downlink direction is a direction from the base station to the mobile terminal.

  First, when the outdoor antenna unit 1 receives a base station signal from a base station, the outdoor antenna unit 1 transmits the base station signal to the relay unit 3.

  Subsequently, when receiving the base station signal, the relay unit 3 extracts the first frequency band signal from the base station signal. The relay unit 3 transmits the first frequency band signal to the indoor antenna unit 2.

  And the indoor antenna part 2 will transmit the 1st frequency band signal to a portable terminal, if the 1st frequency band signal is received.

  Next, the operation in the uplink direction will be described. The uplink direction is the direction from the mobile terminal to the base station.

  First, when the indoor antenna unit 2 receives a terminal signal from a portable terminal, the indoor antenna unit 2 transmits the terminal signal to the relay unit 3.

  Subsequently, when the relay unit 3 receives the terminal signal, the relay unit 3 extracts a second frequency band signal from the terminal signal. The relay unit 3 transmits the second frequency band signal to the outdoor antenna unit 1.

  And the outdoor antenna part 1 will transmit the 2nd frequency band signal, if the 2nd frequency band signal is received.

  Next, the effect will be described.

  According to this embodiment, the relay unit 3 can be attached to and detached from the attaching / detaching portion 4. Further, when the relay unit 3 is attached to the detachable part 4, the relay unit 3 extracts a first frequency band signal of a predetermined frequency band determined according to the unit from the signal received by the outdoor antenna part 1, The first frequency band signal is relayed to the indoor antenna unit 21. Further, the relay unit 3 extracts a signal in the second frequency band of the predetermined frequency band from the signal received by the outdoor antenna unit 1 and relays the second frequency band signal to the indoor antenna unit 21.

  In this case, the relay unit 3 that extracts a signal of a predetermined frequency band is detachable. Therefore, when the frequency band of the signal transmitted / received by the mobile terminal is changed, the predetermined frequency band can be changed only by replacing the relay unit 3 without replacing the entire repeater device. Therefore, it is possible to reduce the cost for changing the frequency band.

  Next, a second embodiment will be described.

  FIG. 2 is a block diagram showing a repeater device according to the second embodiment. In addition, below, what has the same function as FIG. 1 may be attached | subjected, and description may be abbreviate | omitted. Hereinafter, the mobile terminal is assumed to be a mobile phone.

  In FIG. 2, the repeater device includes an outdoor antenna unit 1, an indoor repeater unit 10, and an RF cable 100. Here, the outdoor antenna unit 1 and the indoor repeater unit 10 are connected by an RF cable 100. Note that the RF cable 100 is a coaxial cable.

  The outdoor antenna unit 1 includes an antenna unit 11 and an RF filter unit 12.

  The antenna unit 11 transmits and receives signals to and from the base station wirelessly. It is assumed that the signal transmitted and received by the antenna is a multi-channel signal in which a plurality of high frequency band signals are multiplexed. For example, the high frequency band signals of the new 800 MHz band, the old 800 MHz band, and the 2 GHz band are multiplexed in this signal. In recent years, the 800 MHz band used in mobile phones has been reorganized. Here, the 800 MHz band before the reorganization is referred to as the old 800 MHz band, and the 800 MHz band after the reorganization is referred to as the new 800 MHz band.

  The RF filter unit 12 is a removing unit that removes a predetermined high frequency band signal from a signal transmitted and received by the antenna unit 11 with a base station, and removes an unnecessary signal such as an interference signal. The predetermined high frequency band signal is, for example, a high frequency band signal for PHS (high frequency band signal of 1.9 GHz band).

  The indoor repeater unit 10 includes an indoor antenna unit 2, relay units 3a to 3c, detaching units 4a to 4c, a base station side processing unit 5, and a terminal side processing unit 6.

  The base station side processing unit 5 divides the base station signal received by the outdoor antenna unit 1 into a plurality of first divided signals. Specifically, the base station side processing unit 5 demultiplexes the base station signal into a plurality of first divided signals having different frequency bands.

  In the following, it is assumed that the base station side processing unit 5 demultiplexes the converted base station signal into three first divided signals. Each of the frequency bands of the three first divided signals is an intermediate frequency band corresponding to each of the new 800 MHz band, the old 800 MHz band, and the 2 GHz band.

  The base station side processing unit 5 may distribute or branch the base station signal into a plurality of first divided signals.

  Also, the base station side processing unit 5 generates a second combined signal by combining the signals of the second frequency band extracted by each of the relay units 3a to 3c, and relays the second combined signal to the outdoor antenna unit 1. To do. The second combined signal is a multi-channel signal including the second frequency band signal extracted by each of the relay units 3a to 3c.

  Here, a configuration example of the base station side processing unit will be described. FIG. 3 is a block diagram illustrating a configuration example of the base station side processing unit 5. In FIG. 3, the base station side processing unit 5 includes a transmission / reception demultiplexing unit 51, frequency conversion units 52 and 53, a demultiplexing unit 54, and a multiplexing unit 55.

  The transmission / reception demultiplexing unit 51 is a circulator, for example, and demultiplexes a signal in the uplink direction and a signal in the downlink direction. The transmission / reception demultiplexing unit 51 is not limited to the circulator and can be changed as appropriate.

  The frequency conversion unit 52 is a converter for the downlink direction, and converts the base station signal received by the outdoor antenna unit 1 into a signal in the intermediate frequency band. The frequency conversion unit 53 is a converter for the uplink direction, and converts the second synthesized signal synthesized by the multiplexing unit 55 into a high frequency band signal.

  The demultiplexer 54 demultiplexes the base station signal converted by the frequency converter 52 into three first divided signals.

  The multiplexing unit 55 combines the second frequency band signals extracted by the relay units 3 a to 3 c with the second combined signal, and relays the second combined signal to the outdoor antenna unit 1.

  Returning to FIG. The terminal side processing unit 6 divides the terminal signal received by the indoor antenna unit 2 into a plurality of second divided signals. Specifically, the terminal side processing unit 6 demultiplexes the terminal signal into a plurality of second divided signals having different frequency bands.

  Hereinafter, it is assumed that the terminal side processing unit 6 demultiplexes the terminal signal into three second divided signals. Each of the frequency bands of the three second divided signals is an intermediate frequency band corresponding to each of the new 800 MHz band, the old 800 MHz band, and the 2 GHz band.

  Note that the terminal-side processing unit 6 may distribute or branch the terminal signal into a plurality of second divided signals.

  Further, the terminal-side processing unit 6 combines a plurality of first frequency band signals extracted by the relay units 3 a to 3 c with the first combined signal, and relays the first combined signal to the indoor antenna unit 2. The first combined signal is a multi-channel signal including a signal in the first frequency band extracted by each of the relay units 3a to 3c.

  Here, a configuration example of the terminal side processing unit will be described. FIG. 4 is a block diagram illustrating a configuration example of the terminal side processing unit 6. In FIG. 3, the terminal side processing unit 6 includes a transmission / reception branching unit 61, frequency conversion units 62 and 63, a branching unit 64, and a multiplexing unit 65.

  The transmission / reception demultiplexing unit 61 is, for example, a circulator, and demultiplexes an uplink direction signal and a downlink direction signal.

  The frequency conversion unit 62 is a conversion unit for the uplink direction, and converts the terminal signal received by the indoor antenna unit 2 into a signal in the intermediate frequency band. The frequency conversion unit 63 is a conversion unit for the downlink direction, and converts the first synthesized signal synthesized by the multiplexing unit 65 into a signal in a high frequency band.

  The demultiplexing unit 64 is a terminal signal converted by the frequency conversion unit 62. Split into three second split signals.

  The combining unit 65 combines the first frequency band signal extracted by each of the relay units 3 a to 3 c with the second combined signal, and relays the second combined signal to the indoor antenna unit 2.

  Returning to FIG. Each of the relay units 3a to 3c is detachable from any one of the detachable portions 4a to 4c. Each of the relay units 3a to 3c performs the following processing when attached to any one of the detachable portions 4a to 4c.

  That is, each of the relay units 3a to 3c extracts the first frequency band signal from any one of the plurality of first divided signals divided by the base station side processing unit 5. In addition, each of the relay units 3a to 3c extracts the second frequency band signal from any one of the plurality of second divided signals divided by the terminal side processing unit 6.

  Here, a configuration example of the relay units 3a to 3c will be described. FIG. 5 is a block diagram showing a configuration example of the relay units 3a to 3c. In FIG. 5, each of relay units 3 a to 3 c includes IF filter units 31 and 32 and amplifiers 33 and 34.

  The IF filter unit 31 is an extraction unit for the downlink direction, and extracts a first frequency band signal from any one of a plurality of first divided signals divided by the base station side processing unit 5. The IF filter unit 32 is an extraction unit for the uplink direction, and extracts a second frequency band signal from any one of a plurality of second divided signals divided by the terminal side processing unit 6.

  The amplifier 33 is an amplifying unit for the downlink direction, and amplifies the first frequency band signal extracted by the IF filter unit 31. The amplifier 34 is an amplifying unit for the uplink direction, and amplifies the second frequency band signal extracted by the IF filter unit 32.

  The mechanism that enables the relay units 3a to 3c and the detachable portions 4a to 4c to be detachable is, for example, as follows.

  Each of the detachable portions 4a to 4c is assumed to be a connector. The relay units 3a to 3c are provided with detachable connectors 4a to 4c, which are the connectors thereof, and detachable connectors (not shown). It becomes possible.

  Next, the operation will be described. The case where each of the relay units 3a to 3c is attached to each of the detachable portions 4a to 4c will be described.

  First, the operation in the downlink direction will be described. FIG. 6 is a flowchart for explaining the operation in the downlink direction of the repeater apparatus of this embodiment.

  In step S <b> 61, when the antenna unit 11 receives a base station signal from the base station, the antenna unit 11 transmits the base station signal to the RF filter unit 12. When receiving the base station signal, the RF filter unit 12 executes Step S62.

  In step S62, the RF filter unit 12 removes a predetermined high frequency band signal from the base station signal and removes an unnecessary signal. The RF filter unit 12 transmits the base station signal from which the unnecessary signal is removed to the transmission / reception demultiplexing unit 51 via the RF cable 100.

  Upon receiving the base station signal, the transmission / reception demultiplexing unit 51 transmits the base station signal to the frequency conversion unit 52.

  When receiving the base station signal, the frequency converting unit 52 converts the base station signal into an intermediate frequency band signal. The frequency converting unit 52 transmits the converted base station signal to the demultiplexing unit 54. When receiving the base station signal, the demultiplexing unit 54 executes Step S63.

  In step S63, the demultiplexing unit 54 demultiplexes the base station signal into three first divided signals, and sends the three first divided signals to the IF filter units 31 of the relay units 3a to 3b. Send. The IF filter unit 31 executes step S64 when receiving the first divided signal.

  In step S <b> 64, the IF filter unit 31 extracts a first frequency band signal from the first divided signal, and transmits the extracted first frequency band signal to the amplifier 33.

  When the amplifier 33 receives the first frequency band signal, the amplifier 33 amplifies the first frequency band signal. The amplifier 33 transmits the amplified first frequency band signal to the multiplexing unit 65.

  When receiving the first frequency band signal from each of the amplifiers 33 of the relay units 3a to 3c, the multiplexing unit 65 executes Step S65.

  In step S <b> 65, the multiplexing unit 65 synthesizes the first frequency band signals with the first synthesized signal, and transmits the first synthesized signal to the frequency converting unit 63.

  When receiving the first combined signal, the frequency converting unit 63 converts the first combined signal into a signal in a high frequency band. The frequency converting unit 63 transmits the converted first combined signal to the transmission / reception demultiplexing unit 61.

  When receiving the first combined signal, the transmitting / receiving demultiplexing unit 61 transmits the first combined signal to the indoor antenna unit 2. When the indoor antenna unit 2 receives the first combined signal, the indoor antenna unit 2 executes Step S66.

  In step S66, the indoor antenna unit 2 transmits the first combined signal to the mobile terminal.

  Next, the operation in the uplink direction will be described. FIG. 7 is a flowchart for explaining the operation in the uplink direction of the repeater apparatus of this embodiment.

  In step S <b> 71, when the indoor antenna unit 2 receives a terminal signal from the mobile terminal, the indoor antenna unit 2 transmits the terminal signal to the transmission / reception demultiplexing unit 61.

  When receiving / transmitting the terminal signal, the transmission / reception demultiplexing unit 61 transmits the terminal signal to the frequency conversion unit 62.

  When the frequency converter 62 receives the terminal signal, the frequency converter 62 converts the terminal signal into an intermediate frequency band signal. The frequency converting unit 62 transmits the converted terminal signal to the demultiplexing unit 64. When receiving the terminal signal, the demultiplexing unit 64 executes Step S72.

  In step S72, the demultiplexing unit 64 demultiplexes the terminal signal into three second divided signals, and transmits the three second divided signals to the IF filter units 32 of the relay units 3a to 3c, respectively. To do. If the IF filter unit 32 receives the second divided signal, it executes Step S73.

  In step S <b> 73, the IF filter unit 32 extracts a second frequency band signal from the second divided signal, and transmits the second frequency band signal to the amplifier 34. When the amplifier 34 receives the second frequency band signal, the amplifier 34 amplifies the second frequency band signal. The amplifier 34 transmits the amplified second frequency band signal to the multiplexing unit 55.

  When the multiplexing unit 55 receives the second frequency band signal from each amplifier 34 of the relay units 3a to 3c, the multiplexing unit 55 executes Step S74.

  In step S <b> 74, the multiplexing unit 55 combines the second frequency band signals with the second combined signal and transmits the second combined signal to the frequency converting unit 53. When the frequency converter 53 receives the second composite signal, the frequency converter 53 executes Step S75.

  In step S75, the frequency conversion unit 53 converts the second synthesized signal into a high frequency band signal. The frequency conversion unit 53 transmits the converted second synthesized signal to the transmission / reception demultiplexing unit 51.

  When receiving the second combined signal, the transmitting / receiving demultiplexing unit 51 transmits the second combined signal to the RF filter unit 12 via the RF cable 100.

  When receiving the second synthesized signal, the RF filter unit 12 removes unnecessary signals from the second synthesized signal. The RF filter unit 12 transmits the removed second combined signal to the antenna unit 11. When receiving the second combined signal, the antenna unit 11 executes Step S76.

  In step S76, the antenna unit 11 transmits the second combined signal to the base station.

  Next, the effect will be described.

  According to this embodiment, the base station side processing unit 5 divides the base station signal received by the outdoor antenna unit 1 into a plurality of first divided signals. When each of the relay units 3a to 3b is attached to any one of the attachment / detachment units 4a to 4c, the relay unit 3a to 3b receives the first divided signal divided by the base station side processing unit 5 from the first Extract two frequency band signals.

  In this case, each of the relay units 3a to 3b extracts the second frequency band signal from the base station signal. Even when a plurality of frequency band signals are included in the base station signal, the plurality of frequency bands can be individually changed by exchanging the relay unit 3. Therefore, it is possible to reduce the cost for changing the frequency band.

  Further, according to the present embodiment, the terminal-side processing unit 6 combines the first frequency band signals extracted by the relay units 3a to 3c with the first combined signal, and the first combined signal is the indoor antenna unit 2. Relay to. The terminal-side processing unit 6 divides the base station signal received by the indoor antenna unit 2 into a plurality of second divided signals. Each of the relay units 3a to 3c extracts the second frequency band signal from each of the plurality of second divided signals divided by the terminal side processing unit 6. The base station side processing unit 5 generates a second combined signal by combining the second frequency band signals extracted by the relay units 3a to 3c, and relays the second combined signal to the outdoor antenna unit 1.

  In this case, each of the relay units 3a to 3b extracts the first frequency band signal from the terminal signal. Even when a plurality of frequency band signals are included in the terminal signal, the plurality of frequency bands can be individually changed by exchanging any one of the relay units 3a to 3c. Therefore, it is possible to reduce the cost for changing the frequency band.

  Further, according to the present embodiment, the outdoor antenna unit 1 includes the RF filter unit 12. Further, the detachable parts 4 a to 4 c are connected to the outdoor antenna part 1 via the RF cable 100.

  The RF filter unit 12 is generally relatively large although it depends on its characteristics. For example, the RF filter unit 12 is about 15 cm. For this reason, if the RF filter unit 12 is disposed indoors, it is troublesome for the user. Further, it is desirable that the detachable portions 4a to 4c are disposed indoors so that the detachable portions 4a to 4c can be easily detached from the relay units 3a to 3c.

  In the present embodiment, since the RF filter unit 12 and the detachable parts 4a to 4c are connected via the RF cable 100, the RF filter part 12 can be arranged outdoors and the detachable parts 4a to 4c can be arranged indoors. become. Therefore, it is possible to reduce the size and weight of the device arranged indoors, and it is possible to improve convenience.

  Next, a third embodiment will be described.

  FIG. 8 is a block diagram showing the configuration of the repeater device of the third embodiment. In the following, components having the same functions as those in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof may be omitted.

  In FIG. 8, the repeater device includes an outdoor antenna unit 1, indoor repeater units 10 a to 10 c, and a connection unit 20.

  Each of the indoor repeater units 10a to 10c includes each of the indoor antenna units 2a to 2c, each of the relay units 3a to 3c, and each of the terminal side processing units 6a to 6c. The connection unit 20 includes detachable units 4 a to 4 c and a base station side processing unit 5.

  In this embodiment, each of the indoor repeater units 10a to 10c forms a detachable communication unit with any one of the detachable units 4a to 4c. Since each of the indoor repeater units 10a to 10c includes any one of the relay units 3a to 3c, each of the relay units 3a to 3c can be attached to and detached from any one of the detachable portions 4a to 4c. .

  Each of the indoor repeater units 10a to 10c performs the following processing when attached to any one of the detachable units 4a to 4c.

  That is, each relay unit of the indoor repeater units 10 a to 10 c extracts the first frequency band signal from any one of the plurality of first divided signals divided by the base station processing unit 5. The relay unit relays the extracted first frequency band signal to the indoor antenna unit in the own communication unit. Further, the relay unit extracts the second frequency band signal from the terminal signal received by the indoor antenna unit in the own communication unit.

  Each of the indoor antenna units 2a to 2c has the same function as the indoor antenna unit 2 shown in FIG.

  Next, a configuration example of the terminal side processing units 6a to 6c is shown. Since the terminal side processing units 6a to 6c have the same configuration, the terminal side processing unit 6a is shown as an example.

  FIG. 9 is a block diagram illustrating a configuration example of the terminal-side processing unit 6a. In FIG. 9, the terminal-side processing unit 6a has a configuration in which the demultiplexing unit 64 and the multiplexing unit 65 are excluded from the configuration illustrated in FIG.

  Next, the operation will be described. The case where each of the indoor repeater units 10a to 10c is attached to each of the detachable units 4a to 4c will be described.

  First, the operation in the downlink direction will be described. FIG. 10 is a flowchart for explaining the operation in the downlink direction of the repeater apparatus of this embodiment. In addition, the same code | symbol is attached | subjected to the same process as FIG. 6, and detailed description is abbreviate | omitted.

  In step S64, the amplifier 33 of the relay unit 3a transmits the amplified first frequency band signal to the frequency conversion unit 63 of the terminal side processing unit 6a. When receiving the first frequency band signal, the frequency converting unit 63 executes Step S101.

  In step S101, the frequency conversion unit 63 converts the first frequency band signal into a high frequency band signal, and transmits the converted first frequency band signal to the transmission / reception demultiplexing unit 61.

  When receiving the first frequency band signal, the transmission / reception branching unit 61 transmits the first frequency band signal to the indoor antenna unit 2a. When the indoor antenna unit 2a receives the first frequency band signal, it executes Step 102.

  In step S102, the indoor antenna unit 2a transmits the first frequency band signal to the mobile terminal.

  Next, the operation in the downlink direction will be described. FIG. 11 is a flowchart for explaining the operation in the downlink direction of the repeater apparatus of this embodiment. In addition, the same code | symbol is attached | subjected to the same process as FIG. 7, and detailed description is abbreviate | omitted.

  In step S111, when the indoor antenna unit 2a receives a terminal signal from the mobile terminal, the indoor antenna unit 2a transmits the terminal signal to the transmission / reception branching unit 61 of the terminal-side processing unit 6a.

  When receiving / transmitting the terminal signal, the transmission / reception demultiplexing unit 61 transmits the terminal signal to the frequency conversion unit 62.

  When receiving the terminal signal, the frequency converting unit 62 converts the terminal signal into an intermediate frequency band signal. The frequency conversion unit 62 transmits the converted terminal signal to the IF filter unit 32 of the relay unit 3a. When receiving the terminal signal, IF filter unit 32 executes step S112.

  In step S <b> 112, the IF filter unit 32 extracts a second frequency band signal from the terminal signal and transmits the second frequency band signal to the amplifier 34. When the amplifier 34 receives the second frequency band signal, the amplifier 34 amplifies the second frequency band signal. The amplifier 34 transmits the amplified second frequency band signal to the multiplexing unit 55.

  When the multiplexing unit 55 receives the second frequency band signal from each amplifier 34 of the relay units 3a to 3c, the multiplexing unit 55 executes Step S74. Thereafter, steps S75 and S76 are executed.

  In the above description of the operation, the indoor repeater unit 10a has been described as an example, but the operations of the indoor repeater units 10b and 10c are the same.

  Next, the effect will be described.

  Each relay unit of the indoor repeater units 10a to 10c extracts a first frequency band signal from any one of a plurality of first divided signals divided by the base station processing unit 5. The relay unit relays the extracted first frequency band signal to the indoor antenna unit in the own communication unit. Further, the relay unit extracts the second frequency band signal from the terminal signal received by the indoor antenna unit in the own communication unit.

  In this case, a plurality of first frequency band signals are extracted from the terminal signal. Even when a plurality of frequency band signals are included in the terminal signal, the plurality of frequency bands can be individually changed by replacing any one of the indoor repeater units 10a to 10c. Therefore, it is possible to reduce the cost for changing the frequency band.

  Also, by arranging indoor repeater units 10a to 10c in different locations, indoor antenna units 2a to 2c can be arranged in different locations, and convenience is improved.

  Next, the arrangement of the repeater device will be described. In the following description, the repeater device and the repeater device of the second embodiment are used.

  FIG. 12A and FIG. 12B are schematic views showing the arrangement of repeater devices. 12A and 12B, the repeater device is installed in a private house. It is assumed that the private home is a dead zone.

  In FIG. 12A, the outdoor antenna part 1 is attached to the outer wall of a private house. Moreover, the indoor repeater part 10 is arrange | positioned in the private residence. The outdoor antenna unit 1 and the indoor repeater unit 10 are connected via an RF cable 100. Furthermore, the antenna unit 11 and the RF filter unit 12 of the outdoor antenna unit 1 are integrated.

  Moreover, in FIG. 12B, the RF filter part 12 of the outdoor antenna part 1 is attached to the outer wall of a private house. The antenna unit 11 is mounted on an installation table such as a pole provided around the private house. The antenna unit 11 and the RF filter unit 12 are connected by an RF cable.

  In this case, it is possible to improve the accuracy of signal sensing compared to the case of FIG. 12A. In particular, when the radio wave condition is poor on the outer wall of a private house, the accuracy improvement rate of signal sensing can be improved.

  In each embodiment described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration. Various changes that can be understood by those skilled in the art can be applied to the configuration and details of the present invention within the wireless relay device of the present invention.

  For example, the relay unit 3a and the 3c include the IF filter units 31 and 32 and the amplifiers 33 and 34. However, the relay unit 3a and the 3c include the IF filter units 31 and 32, and the base station side processing unit. May include the amplifier 34, and the terminal-side processing unit 6 may include the amplifier 33. In addition, an IF filter section detachable section and an amplifier detachable section may be provided, and IF filter sections 31 and 32 and amplifiers 33 and 34 may be individually detachable from each detachable section.

It is the block diagram which showed the repeater apparatus of 1st embodiment of this invention. It is the block diagram which showed the repeater apparatus of 2nd embodiment. It is the block diagram which showed the structural example of the base station side processing part. It is the block diagram which showed the structural example of the terminal side process part. It is the block diagram which showed the structural example of the relay unit. It is a flowchart for demonstrating the operation example of the downlink direction of a repeater apparatus. It is a flowchart for demonstrating the operation example of the uplink direction of a repeater apparatus. It is the block diagram which showed the structure of the repeater apparatus of 3rd embodiment. It is the block diagram which showed the other structural example of the terminal side process part. It is a flowchart for demonstrating the other operation example of the downlink direction of a repeater apparatus. It is a flowchart for demonstrating the other operation example of the uplink direction of a repeater apparatus. It is the schematic which showed an example of the arrangement | positioning form of a repeater apparatus. It is the schematic which showed the other example of the arrangement | positioning form of a repeater apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outdoor antenna part 2 Indoor antenna part 3 Relay unit 4 Desorption part 5 Base station side processing part 6 Terminal side processing part 10 Indoor repeater part 11 Antenna part 12 RF filter part 31, 32 IF filter part 33, 34 Amplifier 51, 61 Transmission / reception Demultiplexing part 52, 53, 62, 63 Frequency conversion part 54, 64 Demultiplexing part 55, 65 Multiplexing part 100 RF cable

Claims (6)

A terminal-side communication unit that wirelessly transmits and receives signals to and from the mobile terminal;
A base station side communication unit that wirelessly transmits and receives signals to and from the base station;
Desorption part,
The first frequency band signal of a predetermined frequency band determined according to its own unit is received from the signal received by the base station side communication unit when it is detachable from the detachable part and is attached to the detachable part. Extracting, relaying the first frequency band signal to the terminal side communication unit, and extracting a second frequency band signal of the predetermined frequency band from the signal received by the terminal side communication unit, the second frequency A relay unit that relays a band signal to the base station side communication unit. The wireless relay device according to claim 1,
A base station side processing unit that divides the signal received by the base station side communication unit into a plurality of first divided signals;
There are a plurality of the desorption parts,
When there are a plurality of the relay units, and each of the plurality of relay units is attached to any one of the plurality of detaching units, any of the first divided signals divided by the base station side processing unit A wireless relay device that extracts the first frequency band signal from one of them. The wireless relay device according to claim 2,
The first frequency band signal extracted by each of the plurality of relay units is combined into a first combined signal, the first combined signal is relayed to the terminal side communication unit, and the signal received by the terminal side communication unit Including a terminal-side processing unit that divides the signal into a plurality of second divided signals,
Each of the plurality of relay units extracts the second frequency band signal from any one of a plurality of second divided signals divided by the terminal side processing unit,
The base station side processing unit combines the second frequency band signal extracted by each of the plurality of relay units into a second combined signal, and relays the second combined signal to the base station side communication unit. apparatus. The wireless relay device according to claim 2,
There are a plurality of the terminal side communication units,
Including any one of the plurality of terminal-side communication units and any one of the plurality of relay units, including a plurality of communication units detachable from any one of the plurality of desorption units,
Each relay unit of the plurality of communication units transmits the first frequency band signal to the terminal side communication unit in the communication unit when the communication unit is attached to any one of the plurality of attachment / detachment units. The second frequency band signal is extracted from the signal received by the terminal side communication unit in the own communication unit,
The base station side processing unit combines the second frequency band signal extracted by each relay unit of the plurality of communication units into a second combined signal, and relays the second combined signal to the base station side communication unit Wireless relay device. In the radio relay device according to any one of claims 1 to 4,
The base station side communication unit includes a removal unit that removes unnecessary signals from the transmitted and received signals,
At least the detaching unit is a wireless relay device connected to the base station side communication unit via a cable. A relay unit detachable from the wireless relay device according to any one of claims 1 to 5,
When attached to the wireless relay device, a first frequency band signal of a predetermined frequency band determined according to its own unit is extracted from the signal received by the base station side communication unit, and the first frequency band The signal is relayed to the terminal side communication unit, the second frequency band signal of the predetermined frequency band is extracted from the signal received by the terminal side communication unit, and the second frequency band signal is transmitted to the base station side communication Relay unit that relays to the department.

Images