JP2013115483A - Relay amplifier and relay method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay amplifier and a relay method that can prevent breakage of the amplifier and also improve a communication service when one signal of a W-CDMA wave and an LTE wave becomes an excess input state.SOLUTION: In a radio relay amplifier, a downlink radio wave reception analysis unit 27 obtains a communication method and a band from a reception signal and outputs them to a monitoring control unit 34; the monitoring control unit 34 sets the communication method and band to a downlink digital signal processing unit 28 and an uplink digital signal processing unit 30; the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30 only allow passage of the set band and amplify it, measure a signal level to detect an excess output, and if one signal has become an excess output state, reduce an amplification gain of the signal of the communication method; and if the excess output state of the signal does not disappear, the monitoring control unit 34 performs control not to allow passage of the band of the signal, and stopped relaying of the signal.

Description

  The present invention relates to a relay amplifying apparatus used in a mobile phone system and relays a W-CDMA (Wideband-Code Division Multiple Access) wave and an LTE (Long Term Evolution) wave, and in particular, one of a W-CDMA wave and an LTE wave. The present invention relates to a relay amplifying apparatus and a relay method that can prevent failure and breakage of the apparatus and improve communication services when the above signal becomes an excessive input state.

[Description of Prior Art]
A relay amplification device (repeater device, booster) for mobile phones relays communication between a base station and a mobile station, and there are devices that can relay a W-CDMA wave and an LTE wave.
The W-CDMA wave is used for both telephone calls and data communication, and the LTE wave is used only for data communication. For this reason, the W-CDMA wave tends to be in an excessive input (excess output) state.

[Configuration of Conventional Relay Amplifier: FIG. 5]
The configuration of a conventional relay amplification apparatus will be described with reference to FIG. FIG. 5 is a configuration block diagram of a conventional relay amplification apparatus.
As shown in FIG. 5, the conventional relay amplifying apparatus includes a base station antenna connection terminal 2 and a base station side signal combiner / distributor 4 as a part that performs transmission / reception with respect to the base station, and performs transmission / reception with respect to the mobile station. As a part, a mobile station antenna connection terminal 3 and a mobile station side signal combiner / distributor 5 are provided.

  As a part for processing a downlink signal from the base station to the mobile station, a distributor 6a and a downlink radio wave reception analyzing unit are provided between the base station side signal combiner / distributor 4 and the mobile station side signal combiner / distributor 5. 7, a downlink digital signal processing unit 8, a distributor 6 b, and a downlink analog amplification unit 10. Further, the downlink analog amplification unit 10 includes a downlink output detection unit 11.

  Further, as a part for processing an uplink signal from the mobile station to the base station, an uplink digital signal processing unit 9 and an uplink are provided between the mobile station side signal combiner / distributor 5 and the base station side signal combiner / distributor 4. And an analog amplifying unit 12. Further, the uplink analog amplification unit 12 includes an uplink output detection unit 13.

  Further, the relay amplification device includes a monitoring control unit 14, a power supply unit 15, a wireless communication unit 16, a wireless communication unit antenna connection terminal 17, and an operation unit 18. The operation unit 18 is provided with a power terminal 19, a display unit 20, a power switch (not shown) that switches ON / OFF of the power of the device, and a device reset switch (not shown) that resets the entire device.

[Each part]
Each part of the conventional relay amplification apparatus will be described.
The base station antenna connection terminal 2 is a terminal for connecting an antenna that communicates with the base station.
The base station side signal combiner / distributor 4 combines and distributes the downlink radio wave received from the base station and the uplink radio wave transmitted to the base station.
The mobile station antenna connection terminal 3 connects an antenna that performs communication with the mobile station.
The mobile station side signal combiner / distributor 5 combines and distributes the uplink radio wave received from the mobile station and the downlink radio wave transmitted to the mobile station.

The distributor 6 a distributes the downlink signal from the base station side signal combiner / distributor 4 to the downlink digital signal processing unit 8 and the downlink radio wave reception analyzing unit 7.
The downlink digital signal processing unit 8 performs digital signal processing for noise removal and amplification on the downlink radio wave received from the base station, and ensures the quality of the signal wave. The downlink digital signal processing unit 8 performs digital signal processing in accordance with the W-CDMA wave and LTE wave bands acquired from the downlink radio wave reception analysis unit 7.

The downlink radio wave reception analysis unit 7 receives and analyzes the downlink radio wave from the distributor 6a or the digitally processed radio wave from the distributor 6b, and determines an optimum gain value in the downlink analog amplification unit 10, Output to the control unit. When the power is turned on, the gain value is calculated using the downlink radio wave from the distributor 6a, and when the relay is started, the signal from the distributor 6b is used.
Specifically, the downlink radio wave reception analysis unit 7 measures the peripheral level from the received signal and calculates the loss level based on the list information of the peripheral stations included in the received signal to determine the gain value. To do.

The distribution unit 6 b distributes the digitally processed radio wave from the downlink digital signal processing unit 8 to the downlink analog amplification unit 10 and the downlink radio wave reception analysis unit 7.
The downlink analog amplification unit 10 amplifies the digitally processed radio wave with a gain value instructed from the monitoring control unit 14 and outputs the amplified radio wave to the mobile station side signal synthesis / distributor 5.
The downlink output detector 11 detects an overoutput state based on the signal level of the output signal from the downlink analog amplifier 10.

The uplink digital signal processing unit 9 performs digital signal processing on the uplink radio wave received from the mobile station, and ensures the quality of the signal wave.
The uplink analog amplifying unit 12 amplifies the uplink radio wave whose quality is ensured and outputs it to the base station side signal combiner / distributor 4.
The uplink output detector 13 measures the output level on the uplink and detects an overpower state.

  The supervisory control unit 14 controls the entire apparatus. Band control of the digital filters of the downlink digital signal processing unit 8 and the uplink digital signal processing unit 9, and the downlink analog amplification unit 10 and the uplink analog amplification are performed. Gain control in the unit 12 is performed. In addition, communication with a monitoring center or the like is performed via the wireless communication unit 16.

The power supply unit 15 supplies power to each unit of the apparatus.
The wireless communication unit 16 performs wireless communication with a monitoring center or the like. The wireless communication unit 16 may be connected to the monitoring control unit 14 without using the power supply unit 15.
The antenna connection terminal 17 for wireless communication unit is a terminal for connecting an antenna used for transmission / reception of the wireless communication unit 16.
The operation unit 18 is used by an operator or the like to perform an input operation.
The power supply terminal 19 connects a power supply line.
The display unit 20 is configured by an LED or the like, and displays the operation state of the apparatus.

[Operation of Conventional Relay Amplifier: FIG. 5]
The operation of the conventional relay amplification apparatus will be described with reference to FIG.
[When receiving downlink signal]
The downlink radio signal received by the base station antenna is output from the base station side signal combiner / distributor 4 and distributed to the downlink radio wave reception analyzer 7 and the downlink digital signal processor 8 by the distributor 6a.

  The downlink radio wave reception analysis unit 7 receives and analyzes the W-CDMA wave signal included in the downlink signal, and does not affect the neighboring base stations at the place where the relay amplification device is installed, and the maximum Is calculated, and the gain value is output to the monitoring control unit 14. Also, the analysis result is output to the downlink digital signal processing unit 8.

  The downlink digital signal processing unit 8 controls the internal digital filter in accordance with the band of the W-CDMA wave and the LTE wave to be relayed based on the analysis result in the downlink radio wave reception analysis unit 7, and Noise is removed by digital signal processing, and only signal waves to be relayed are passed.

  The downlink analog amplifier 10 amplifies the signal input so as to have the gain instructed from the monitoring controller 14, and the amplified signal is transmitted to the mobile station side signal combiner / distributor via the downlink output detector 11. 5 and radiate into the space from the mobile station side antenna.

The downlink output detection unit 11 measures the signal level of the entire signal output from the downlink analog amplification unit 10 and detects whether or not it is in an overoutput state. The signal level is measured as an average value of all bands relayed by the relay amplification device.
When the downlink output detection unit 11 detects an excessive output, the downlink output detection unit 11 notifies the supervisory control unit 14 of the fact, and reduces the gain of the downlink analog amplification unit 10 to reduce the relay gain of the entire downlink.

  That is, when the output is excessive, when both the W-CDMA wave and the LTE wave are relayed, the relay gains of all the signal waves are lowered.

When the downlink output detection unit 11 detects that the overpower state has been eliminated by reducing the relay gain, the downlink output detection unit 11 notifies the monitoring control unit 14 to that effect.
On the other hand, if the downlink output detector 11 still detects an overpower state even if the relay gain is reduced, the downlink analog amplifier 10 stops the operation of the supervisory controller 14 (overload alarm state). Request).

  Upon receiving the operation stop request from the downlink analog amplification unit 10, the monitoring control unit 14 switches the display on the display unit 20 with the device state as an alarm state, and the downlink digital signal processing unit 8 and the uplink digital signal. An instruction to close all the internal digital filters is output to the processing unit 9 so as to stop the relay of the signal wave.

  The downlink digital signal processing unit 8 and the uplink digital signal processing unit 9 close all the internal digital filters and stop all W-CDMA wave and LTE wave relays in both uplink and downlink according to the instruction from the monitoring control unit 14. .

Furthermore, the monitoring control unit 14 instructs the wireless communication unit 16 to report the device status to the monitoring center or the operation manager.
The wireless communication unit 16 transmits the device status, alarm contents, and the like to the monitoring center and the operation manager in accordance with the instruction from the monitoring control unit 14. Only W-CDMA waves are used to report alarm conditions.
In this way, the operation at the time of receiving the downlink signal is performed.

[Uplink signal reception]
The uplink radio signal received by the mobile station antenna is input to the uplink digital signal processing unit 9 via the mobile station side signal combiner / distributor 5.
The uplink digital signal processing unit 9 controls the digital filter in accordance with the band of the W-CDMA wave and LTE wave to be relayed based on the analysis result of the downlink radio wave reception analysis unit 7, and the signal in the desired band Noise is removed by digital signal processing for only the wave and output.

The uplink analog amplifying unit 12 amplifies the uplink relay wave so that the gain value designated by the monitoring control unit 14 is obtained.
The uplink output detection unit 13 measures the signal level of the output signal from the uplink analog amplification unit 12 and detects whether or not there is an excessive output.
When the uplink output detection unit 13 detects an excessive output, the uplink output detection unit 13 notifies the monitoring control unit 14 of the fact, and controls to reduce the gain of the uplink analog amplification unit 12 to reduce the gain of the entire relay wave. Let

When the uplink output detection unit 13 detects that the over-output state has been eliminated, the uplink output detection unit 13 notifies the monitoring control unit 14 to that effect.
If the uplink output detector 13 detects an overpower state even if the relay gain is reduced, the uplink output detector 13 of the uplink analog amplifier 12 stops the operation of the monitoring controller 14. (Transition to over-input alarm state) is requested.

Upon receiving the request from the uplink analog amplification unit 12, the monitoring control unit 14 sets the device state to the alarm state, switches the display on the display unit 20, and switches the display to the downlink digital signal processing unit 8 and the uplink digital signal processing unit 9. In contrast, an instruction to close all the internal digital filters is output.
Subsequent processing is the same as when receiving a downlink, and thus description thereof is omitted.
In this way, the operation when receiving the uplink signal is performed.

  That is, in the conventional relay amplification apparatus, when the uplink or downlink relay signal is in an excessive input (over output) state, all the relay waves are stopped regardless of whether they are W-CDMA waves or LTE waves, It was intended to avoid equipment failure and damage.

[Related technologies]
As a technology related to the wireless relay amplification device, there is "radio relay amplification device" (Kokusai Electric Co., Ltd., et al., Patent Document 1), Japanese Patent Laid-Open No. 10-303800.
In Patent Document 1, an output abnormality detection circuit that stops an amplification operation when an excessive input or an excessive output occurs due to the approach of a mobile device is a detection voltage obtained by detecting a transmission output by a first comparator and an output abnormality threshold. Compared with the value, the burst-like output that is output when the output abnormal threshold is exceeded is continued in the peak hold circuit, the signal is compared with the alarm threshold by the second comparator, A wireless relay amplification device that obtains a continuous alarm signal is described.

JP-A-10-303800

  However, in the conventional relay amplifying apparatus and relay method, even if either the W-CDMA wave or the LTE wave is in an over-input state and the other is not in an over-input state, all the relay waves are stopped. However, in practice, signals that can be relayed without problems are not relayed, and there is a problem that a sufficient communication service cannot be provided.

  The present invention has been made in view of the above situation, and when either the W-CDMA wave or the LTE wave is over-inputted, only the over-input signal wave is stopped and the other is stopped. It is an object of the present invention to provide a relay amplifying apparatus and a relay method capable of improving communication service by continuously performing relay.

  The present invention for solving the problems of the above-described conventional example is a repeater amplifier that relays W-CDMA waves and LTE waves, receives radio waves, analyzes received signals, and receives the received signals. An analysis unit that determines a gain value for relaying, an amplification unit that amplifies the received signal as a whole according to the gain value determined by the analysis unit, and a signal band of each of the W-CDMA wave and the LTE wave Noise removing means, amplifying means for amplifying each signal that has passed, and detecting an overpower state of each of the W-CDMA wave and LTE wave, and when one of the signals is in an overpowered state, A line digital signal processing unit having a gain control means for controlling to reduce the gain of the signal, and if the overoutput state of the one signal in the line digital signal processing unit is not resolved, the band of the signal is passed. It is characterized by a control unit to stop relaying the control to the signal noise removing means so as not to.

  In addition, the present invention includes a line digital signal processing unit that performs signal processing of a received signal and a control unit that controls the line digital signal processing unit, and relays in a relay amplification device that relays W-CDMA waves and LTE waves. In the method, the line digital signal processing unit passes the signal band of each of the received W-CDMA wave and LTE wave, amplifies each of the passed signals, and each of the W-CDMA wave and the LTE wave When one of the signals is in an over output state, the amplification gain of the one signal is reduced, and the control unit does not eliminate the over output state of the one signal. It is characterized in that the relay of the signal is stopped by controlling the line digital signal processing unit so as not to pass the band of the signal.

  The present invention is also a relay amplifying apparatus that relays W-CDMA waves and LTE waves, receives a radio wave, analyzes the received signal, and determines a gain value for relaying the received signal. An analyzing unit, an amplifying unit for amplifying the received signal as a whole according to the gain value determined by the analyzing unit, and a band of each signal by removing noise from each of the W-CDMA wave and LTE wave in the received signal Noise removing means for passing the signal, amplifying means for amplifying the noise-removed signal, and detecting the over-output state of each of the W-CDMA wave and the LTE wave, and controlling the gain of the signal in the over-output state in the amplifying means. And a line digital signal processing unit including a gain control means.

  According to the present invention, a relay amplification apparatus that relays W-CDMA waves and LTE waves, receives a radio wave, analyzes the received signal, and determines a gain value for relaying the received signal An analyzing unit, an amplifying unit for amplifying the received signal as a whole according to the gain value determined by the analyzing unit, a noise removing unit for passing the band of each signal of the W-CDMA wave and the LTE wave, and each signal passed Amplifying means for amplifying the signal, detecting an over-output state of each of the W-CDMA wave and the LTE wave, and controlling to reduce the gain of one signal in the amplifying means when one of the signals becomes an over-output state A line digital signal processing unit including a gain control unit, and a noise removing unit so as not to pass the band of the signal when the over-output state of the one signal in the line digital signal processing unit is not resolved Since it is a relay amplifying device having a control unit that controls and stops relaying the signal, it is possible to stop the signal wave relay that does not solve the overoutput state and prevent failure and damage of the device, and overoutput The relay of the other signal wave that is not in the state can be continued as it is, and there is an effect that communication service can be improved.

  In addition, according to the present invention, a relay amplification apparatus that includes a line digital signal processing unit that performs signal processing of a received signal and a control unit that controls the line digital signal processing unit, and relays W-CDMA waves and LTE waves. In which the line digital signal processing unit passes the band of each of the received W-CDMA wave and LTE wave, amplifies each of the passed signals, and the W-CDMA wave and the LTE wave When each overoutput state is detected and one of the signals is in an overoutput state, the amplification gain of the one signal is reduced, and the control unit does not resolve the overoutput state of the one signal In addition, since the relay method for stopping the relay of the signal by controlling the line digital signal processing unit so as not to pass the band of the signal is stopped, the relay of the signal wave that does not solve the over-output state is stopped and the device failure or It is possible to prevent the loss, the relay of the other signal waves are not the over output state can be continued as it is, there is an effect that it is possible to improve the communication service.

  In addition, according to the present invention, a relay amplifying apparatus that relays W-CDMA waves and LTE waves, receives a radio wave, analyzes the received signal, and determines a gain value for relaying the received signal. An analyzing unit for determining, an amplifying unit for amplifying the received signal as a whole according to the gain value determined by the analyzing unit, and removing each signal from the W-CDMA wave and the LTE wave in the received signal Noise removing means for passing the signal band, amplifying means for amplifying the noise-removed signal, and detecting the over-output state of each of the W-CDMA wave and the LTE wave, and the gain of the signal in the over-output state in the amplifying means Since it is a relay amplification device having a line digital signal processing unit provided with a gain control means for controlling the device, the gain or failure of the device is controlled by controlling the gain of only one signal wave in an over-output state. Preventing it possible, to maintain the gain of the other signal waves are not the over output state reliably relay, there is an effect that it is possible to improve the reliability of communication.

1 is a configuration block diagram of a relay amplification device according to an embodiment of the present invention. It is a block diagram of the configuration of the downlink digital signal processing unit 28 of the present apparatus. It is a flowchart which shows the process of a gain control means. It is a flowchart which shows the process at the time of the over-input alarm state transition of a monitoring control part. It is a block diagram of a conventional relay amplification device.

Embodiments of the present invention will be described with reference to the drawings.
[Outline of the embodiment]
In the relay amplification apparatus and the relay method according to the embodiment of the present invention, the line digital signal processing unit performs noise removal and amplification of the relay signal, and independently detects the W-CDMA wave and the LTE wave. When over output is detected and one of them becomes an over output state, the gain of the signal wave is reduced, and when the over output state of the one signal wave is not resolved, the control unit performs line digital signal processing. The line digital signal processing unit is controlled so that the relay of the one signal wave is stopped and the relay of the other signal wave is continued by controlling so that the one signal wave does not pass in the unit. It is possible to prevent failure and breakage of the device due to the output, and to improve the communication service by relaying the signal wave that is not excessively output as it is.

  Further, the relay amplifying apparatus and the relay method of the present invention reduce the gain of only the W-CDMA wave when detecting the over-output state of the W-CDMA wave, and if the over-output state is still not resolved, the W-CDMA wave The relay of the wave is stopped, and the LTE wave continues the relay without reducing the gain, so that the failure and breakage of the apparatus can be prevented and the communication service can be improved.

[Configuration of Embodiment: FIG. 1]
The configuration of the relay amplification apparatus according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of a relay amplifying apparatus according to an embodiment of the present invention.
As shown in FIG. 1, the basic configuration of the relay amplifying apparatus (this apparatus) according to the embodiment of the present invention is the same as that of the prior art. , Base station side signal combiner / distributor 24, mobile station antenna terminal 23, mobile station side signal combiner / distributor 25, distributor 26a, downlink radio wave reception analyzer 27, distributor 26b, power supply unit 35, a radio communication unit 36, a radio communication unit antenna terminal 37, an operation unit 38, a power supply terminal 39, a display unit 40, a power switch (not shown), and a device reset switch (not shown). I have.
Detailed description of the same configuration and operation as in the prior art will be omitted.
The wireless communication unit 36 and the wireless communication unit antenna terminal 37 may be configured as separate devices.

  Further, as a characteristic part of the present apparatus, a downlink digital signal processing unit 28 and an uplink digital signal processing unit 30 are provided, and a downlink analog amplification unit 32, an uplink analog amplification unit 33, and a monitoring control unit 34 The configuration and operation are partly different from the conventional one. The monitoring control unit 34 corresponds to the control unit in the claims.

Each component will be described.
The downlink radio wave reception analysis unit 27 analyzes the received signal, as in the past, and shows information indicating which communication method the signal is in, W-CDMA or LTE, and information on the band to be used. Obtain and output to the monitoring control unit 34.
Further, the downlink radio wave reception analysis unit 27 determines the gain value of the entire relay signal based on the received signal, and outputs it to the monitoring control unit 34. The gain value of the entire relay signal is the gain in the downlink analog amplification unit 32 and the uplink analog amplification unit 33.

The characteristic part of this apparatus is demonstrated.
As in the conventional case, when the overall gain value is input from the downlink radio wave reception analysis unit 27, the monitoring control unit 34 sets the gain value in the downlink analog amplification unit 32 and the uplink analog amplification unit 33. To do.
At the same time, when the communication method and band are input from the downlink radio wave reception analysis unit 27, the monitoring control unit 34 sets the communication method and band to the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30. Instruct.

Further, as a feature of the present apparatus, when the supervisory control unit 34 receives from the downlink digital signal processing unit 28 a request for transition to an over-input alarm state requesting to stop relaying a signal for a specific communication method, The relay of the communication method is shifted to the over-input alarm state, and the relay operation is stopped.
The operation of the monitoring control unit 34 will be described in detail later.

  The downlink digital signal processing unit 28 of this apparatus includes an internal digital filter and is used for downlink W-CDMA waves and LTE waves based on a control signal from the supervisory control unit 34 as in the prior art. A digital filter pass band is set in accordance with a certain band, and a noise removal digital signal process for passing only a necessary band for each of the W-CDMA wave and the LTE wave is performed.

Further, the downlink digital signal processing unit 28 stores amplification gain values for each of the W-CDMA wave and the LTE wave, and when the communication method of the input signal is designated by the monitoring control unit 34, the communication method The process of amplifying the input signal is performed based on the gain value corresponding to. That is, the downlink digital signal processing unit 28 of the present apparatus can perform amplification with different gains for each of the W-CDMA wave and the LTE wave.
The initial gain value in the downlink digital signal processing unit 28 may be stored in advance or may be set from the monitoring control unit 34. After the relay operation is started, the gain value is set by the downlink output detection unit 29 in the downlink digital signal processing unit 28 described later.

  Further, as a feature of this apparatus, when the downlink digital signal processing unit 28 shifts to an over-input alarm state for a specific communication method, a signal wave of the communication method is input in accordance with an instruction from the monitoring control unit 34. Then, the relay of the signal wave is stopped by closing the digital filter so as not to pass the band of the signal wave. Further, as a feature of this apparatus, even if the relay of one communication method is stopped, the other signal wave relay continues as before.

Furthermore, the downlink digital signal processing unit 28 of the present apparatus includes a downlink output detection unit 29.
The downlink output detection unit 29 detects the output level by detecting the signal output from the downlink digital signal processing unit 28 for each type of relay signal. Specifically, the downlink output detection unit 29 measures the output level of the downlink digital signal processing unit 28 for each of the W-CDMA wave and the LTE wave, detects whether or not it is in an excessive output state, When the signal is output, the monitoring control unit 34 is notified of this, and as a feature of the present apparatus, the amplification gain in the downlink digital signal processing unit 28 is reduced for the signal that has been excessively output.

The uplink digital signal processing unit 30 performs processing similar to that performed by the downlink digital signal processing unit 28 on the uplink signal, and in accordance with an instruction from the monitoring control unit 34, the uplink W-CDMA wave and LTE wave. The digital filter is set in accordance with the band used for the digital signal processing for noise removal and amplification.
The uplink digital signal processing unit 30 includes an uplink output detection unit 31. The uplink output detection unit 31 detects the signal output from the uplink digital signal processing unit 30 for each of the W-CDMA wave and the LTE wave to detect whether it is in an overoutput state. The supervisory control unit 34 is notified of this, and as a feature of the present apparatus, the amplification gain in the uplink digital signal processing unit 30 is reduced for the signal that has been over-output.

Further, the downlink analog amplification unit 32 amplifies the entire downlink analog signal input with the gain value designated by the monitoring control unit 34 and outputs the amplified signal to the mobile station side signal synthesis / distributor 25.
Similarly, the uplink analog amplification unit 33 amplifies the entire uplink analog signal with the gain value designated by the monitoring control unit 34 and outputs the amplified signal to the base station side signal combiner / distributor 24.
In this apparatus, the downlink analog amplification unit 32 and the uplink analog amplification unit 33 are not provided with a detection unit.

[Configuration of Downlink Digital Signal Processing Unit 28: FIG. 2]
Here, the configuration of the downlink digital signal processing unit 28 which is a characteristic part of the present apparatus will be described with reference to FIG. FIG. 2 is a block diagram showing the configuration of the downlink digital signal processing unit 28 of the present apparatus. Although only the downlink digital signal processing unit 28 will be described here, the uplink digital signal processing unit 30 has the same configuration.
As shown in FIG. 2, the downlink digital signal processing unit 28 includes a noise removal unit 41, an amplification unit 42, a distribution unit 43, and a gain control unit 44.

  The noise removing means 41 is constituted by a digital filter, and allows only the band designated by the monitoring control unit 34 to pass. As a result, the noise removing unit 41 can pass only the W-CDMA wave or the LTE wave, and can remove signals other than the set band.

  Further, as a feature of this apparatus, the noise removing means 41 closes the digital filter and does not pass the signal when a signal wave in which the over-output state continues is input according to an instruction from the monitoring control unit 34. Like that. This operation will be described in detail later.

  The amplification means 42 amplifies the relay signal from which noise has been removed with a predetermined gain. The amplifying unit 42 of this apparatus stores gain values for each of the W-CDMA wave and the LTE wave, and according to the type of the relay signal specified by the control signal from the monitoring control unit 34, the corresponding gain value Amplify with. The gain value may be the same or different between the W-CDMA wave and the LTE wave. In particular, when there is an instruction to reduce the gain specifying the type of the relay signal from the gain control unit 44, the amplifying unit 42 of this apparatus reduces the gain of the signal.

  The distribution unit 43 distributes the relay signal output from the amplification unit 42 to the distribution unit 26b and the gain control unit 44 shown in FIG.

  The gain control unit 44 corresponds to the downlink output detection unit 29 shown in FIG. 1, and updates and holds the type of the relay signal acquired from the control signal from the monitoring control unit 34 and is distributed. The signal level of the relay signal is detected, and compared with a threshold value stored in advance, it is detected whether or not it is in an overoutput state.

When an overpower is detected, the gain control unit 44 adds the type of relay signal being held and notifies the monitoring control unit 34 that the power is overpowered.
Further, the gain control unit 44 instructs the amplification unit 42 to decrease the gain value of the signal. The gain value may be decreased by a preset step width, or may be decreased by a value corresponding to the distance from the threshold value.

In addition, as a feature of the present apparatus, the gain control unit 44 determines whether or not the overoutput state of the signal is still eliminated even after the gain of the signal that has been overoutput is reduced. Requests transition to an over-input alarm state to stop relaying the signal.
When the shift to the over-input alarm state is requested, the monitoring control unit 34 instructs the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30 to stop relaying the signal. The operation of the monitoring control unit 34 will be described in detail later.

[Operation of this apparatus: FIGS. 1 and 2]
Next, the operation of this apparatus will be described with reference to FIGS. Here, the operation of the downlink digital signal processing unit 28 and the monitoring control unit 34, which are characteristic parts of the present apparatus, will be mainly described when the downlink signal is received.
At the time of reception of the uplink signal, the processing of the downlink radio wave reception analysis unit 27 is not performed, but the processing of the uplink digital signal processing unit 30 and the uplink analog amplification unit 33 is respectively performed by the downlink digital signal processing unit 28, This is the same as the processing of the downlink analog amplification unit 32.

[Gain value setting]
In this apparatus, when a downlink signal is received, the downlink radio wave reception analysis unit 27 shown in FIG. 1 analyzes the reception signal, acquires information on the communication method and the used band, and outputs the information to the monitoring control unit 34.
At the same time, the downlink radio wave reception analysis unit 27 calculates the gain value of the entire relay signal and outputs it to the monitoring control unit 34. The gain value of the entire relay signal is the maximum gain value that does not affect the surrounding base stations. The downlink radio wave reception analysis unit 27 determines the gain value based on the signal distributed by the distribution unit 26a when the power is turned on, and when the operation of the device (particularly the downlink digital signal processing unit 28) becomes stable, The gain value is determined using the signal from the distributor 26b.

  Upon receiving the gain value input from the downlink radio wave reception analysis unit 27, the monitoring control unit 34 sets the gain value in the downlink analog amplification unit 32 and the uplink analog amplification unit 33, and the downlink analog amplification unit 32. Then, the uplink analog amplifying unit 33 amplifies the whole relay signal with the set gain value.

[Communication method and bandwidth settings]
In addition, when the communication method and band information of the received signal is input from the downlink radio wave reception analysis unit 27, the monitoring control unit 34, based on the information, the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30 outputs a control signal.
Hereinafter, only the downlink signal will be described in detail. The supervisory control unit 34 designates a band to be passed by the digital filter to the noise removing unit 41 of the downlink digital signal processing unit 28 shown in FIG. The gain control means 44 is notified of the communication method.

[Amplification at line digital signal processor]
The signal distributed by the distribution unit 6a is input to the noise removal means 41 of the downlink digital signal processing unit 28.
In the noise removing means 41 shown in FIG. 2, the band designated by the monitoring control unit 34 is set and the relay signal is passed, and noise other than the band is removed. The band designated by the monitoring control unit 34 is a band corresponding to the communication method read from the information included in the received signal, and thereby allows either the W-CDMA wave or the LTE wave to pass.

The W-CDMA wave or LTE wave from which noise has been removed is input to the amplifying means 42.
The amplifying unit 42 stores gains corresponding to the W-CDMA wave and the LTE wave in advance. Then, when the communication method is designated by the monitoring control unit 34, the amplification unit 42 amplifies the input signal with a gain corresponding to the communication method and outputs the amplified signal to the distribution unit 43.

The amplified relay signal is distributed by the distribution unit 43 to the distribution unit 26b in FIG. 1 and the gain control means 44 in FIG.
The relay signal input to the distribution unit 26b is radiated from the mobile station antenna to the space. The relay signal input to the gain control unit 44 is used for gain control of the amplification unit 42.

[Detection of over output status]
The gain control unit 44 measures the level of the signal input from the distribution unit 43, and uses a threshold value set in advance corresponding to the communication method designated by the monitoring control unit 34 and the measured signal level. Comparison is made to determine whether the output is excessive.
When the signal level exceeds the threshold value, the gain control unit 44 determines that the output is excessive, and notifies the monitoring controller 34 that the downlink relay signal is in the over output state.
Here, the monitoring control unit 34 may notify the monitoring center via the wireless communication unit 36 that the signal of the communication method is in an overoutput state.
Note that the notification from the gain control means 44 to the monitoring control unit 34 is not performed every time an overoutput state is detected, but is notified only when the overoutput state continues and shifts to an overinput alarm state. Also good.

[Gain control]
Furthermore, the gain control unit 44 instructs the amplification unit 42 to reduce the gain of the relay signal of the communication method. For example, when the W-CDMA wave is in an overpowered state, the gain control unit 44 outputs an instruction to the amplification unit 42 so as to decrease the gain, so that the amplification unit 42 is controlled by the monitoring control unit 34. The gain of the W-CDMA wave, which is a communication method held based on the signal, is reduced.

[Amplification in over output state]
The amplifying unit 42 reduces and updates the stored gain of the communication method in accordance with an instruction from the gain control unit 44, and lowers it if the communication method is designated by the control signal from the monitoring control unit 34. Amplification is performed with a high gain. The gain corresponding to the other communication method is maintained as it is.
For example, when the gain of the W-CDMA wave is reduced, if W-CDMA is designated as the communication method from the supervisory control unit 34, the input signal is amplified with a gain corresponding to W-CDMA (a reduced gain). If LTE is designated by the monitoring control unit 34, amplification is performed with a gain corresponding to LTE (a gain not reduced). As a result, a signal that is not overpowered can be relayed without reducing the gain.

Then, the gain control means 44 monitors whether or not the overpower state has been eliminated by the gain reduction. For example, when monitoring whether or not the over-output state has been resolved within a certain time, an internal timer is activated to measure the certain time. The gain control means 44 measures the output signal level from the amplifying means 42 at any time while counting by the timer, and performs control to reduce the gain of the amplifying means 42 when an excessive output is detected.
When the over-output state is resolved by gain control, the gain control unit 44 notifies the monitoring control unit 34 to that effect and resets the timer.

[If the over-output state is not resolved]
Further, when the over-output state is not resolved even when the timer expires, the gain control unit 44 requests the monitoring control unit 34 to shift to the over-input alarm state so as to stop relaying the signal. , Reset the timer.

  When the monitoring control unit 34 receives a request for transition to the over-input alarm state from the gain control unit 44, the monitoring control unit 34 stores therein the communication method name at the time as an over-input state signal. Here, W-CDMA is stored as an over-input state signal.

[Operation in over-input alarm state]
The supervisory control unit 34 receives the request and shifts to an over-input alarm state for the W-CDMA wave, and receives information indicating that the input signal is a W-CDMA wave from the downlink radio wave reception analysis unit 27. And an instruction to close the digital filter (do not set the pass band) to the noise removing means 41 of the downlink digital signal processing unit 28, and the noise removing means closes the filter accordingly. As a result, the relay of the W-CDMA wave is stopped, and it is possible to prevent the device from being destroyed due to excessive output.
At the same time, the monitoring control unit 34 outputs an instruction to close the digital filter of the uplink digital signal processing unit 30 and stops relaying the uplink signal of the communication method.

  On the other hand, when information indicating that the input signal is an LTE wave is input from the downlink radio wave reception analysis unit 27, the supervisory control unit 34 does not store the LTE wave as an over-input state signal. The noise removal means 41 is instructed to the band input from the downlink radio wave reception analysis unit 27. Thereby, the LTE wave which is not overpowered can perform a relay operation as before.

Further, the monitoring control unit 34 outputs an instruction to the wireless communication unit 36 to notify the monitoring center or the operation manager that the signal wave of the communication method has been excessively output and has shifted to the excessive input alarm state. To do. At that time, the supervisory control unit 34 instructs the transmission using the other communication method that is not overpowered. For example, when the W-CDMA wave is in an overpowered state, the monitoring control unit 34 instructs the wireless communication unit 36 to transmit using the LTE line.
The wireless communication unit 36 and the wireless communication unit antenna connection terminal 37 are separated from the present device and configured as separate devices, and are notified to the monitoring center or the like by another communication method other than the W-CDMA wave or LTE wave. May be.
In accordance with an instruction from the monitoring control unit 34, the wireless communication unit 36 notifies the host device that it is in an over-input alarm state using a communication line that is not in an over-output state.

  In the above-described example, the case where the overpower is detected in the gain control unit of the downlink digital signal processing unit 28 has been described. However, when the uplink signal is received, the gain control unit of the uplink digital signal processing unit 30 performs W-CDMA. Even when an excessive output of a wave or LTE wave is detected, the monitoring control unit 34 is requested to shift to an over-input alarm state, and the monitoring control unit 34 shifts to an over-input alarm state and performs the same processing.

[Return from over-input alarm state]
A brief description will be given of how to recover from an over-input alarm state.
For example, when a monitoring center or an operation manager receives notification of an over-input alarm state, the traffic amount of the communication line is monitored, and when it is determined that the alarm state can be canceled, such as when traffic is reduced, An alarm state release instruction is transmitted with the name of the communication system attached to the relay amplifier. Even when both the W-CDMA wave and the LTE wave are in an alarm state, it is possible to recognize which one has been canceled.

When the wireless communication unit 36 of this apparatus receives an instruction to cancel the alarm state, the wireless communication unit 36 notifies the monitoring control unit 34.
Then, the monitoring control unit 34 deletes the communication method name stored therein as the over-input state signal, and shifts from the over-input alarm state to the normal operation. As a result, the supervisory control unit 34 performs an operation of instructing the digital filter on the pass band when a signal of the communication method is input to the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30. It resumes and relaying resumes.
In this way, the operation of this apparatus is performed.

[Processing of gain control means 44: FIG. 3]
Next, processing of the gain control means 44 of the downlink digital signal processing unit 28 will be described with reference to FIG. FIG. 3 is a flowchart showing the processing of the gain control means 44. The same processing is also performed in the gain control means (uplink output detection unit 31) of the uplink digital signal processing unit 30.
As described above, the gain control unit 44 receives the control signal from the monitoring control unit 34 at any time, and internally stores the communication method of the downlink signal input to this apparatus.
Then, as shown in FIG. 3, when the relay signal is input, the gain control unit 44 measures the signal level of the signal (300) and compares it with a pre-stored threshold value to determine whether the output is excessive. It is determined whether or not (302).

When the output is not excessive (Yes), the gain controller 44 returns to the process 300 and continues measuring the signal level.
When the output is excessive in the process 302, the gain control unit 44 performs control to reduce the gain of the amplification unit 43 for the communication method stored therein (304).
Then, the gain control unit 44 notifies the monitoring control unit 34 that the communication method is an excessive output (306). Further, the gain control means 44 measures the signal level (308), determines whether or not there is an excessive output (310), and if it is not an excessive output (in the case of No), it monitors the release of the excessive output state. 34, and the process proceeds to the process 300.

  If the output is excessive in the process 310, the gain control means 44 determines whether or not a fixed time has elapsed from the process 304 (320). ), The process proceeds to process 304 to further reduce the gain.

If the predetermined time has elapsed in the process 320, the gain control unit 44 requests the monitoring control unit 34 to shift to the over-input alarm state for the communication method (322), and returns to the process 300.
In this way, processing in the gain control means 44 is performed.

[Processing of the supervisory control unit 34 at the time of transition to an over-input alarm state: FIG. 4]
Next, processing in the monitoring control unit 34 of this apparatus will be described with reference to FIG. FIG. 4 is a flowchart showing a process when the supervisory control unit 34 transitions to an over-input alarm state.
The monitoring control unit 34 monitors whether or not a request for shifting to the over-input alarm state is input from the gain control unit 44 (400), and when it is input (in the case of Yes), shifts to the over-input alarm state. Then, the communication method at the time is stored as an over-input state signal (402).

  Then, the monitoring control unit 34 instructs the wireless communication unit 36 to report to the monitoring center that the signal of the communication method is in an over-input alarm state (404). At that time, the monitoring control unit 34 instructs to transmit using a communication line that is not an over-input state signal. For example, if the W-CDMA wave is an over-input state signal, an instruction is given to transmit using the LTE wave.

  When the downstream radio wave reception analysis unit 27 receives information about the communication method and bandwidth of the downstream signal input to the apparatus (406), the monitoring control unit 34 sets the input communication method as an over-input state signal. It is determined whether or not the communication method is stored internally (408). If it is not an over-input state signal (No), the input communication method and band are processed as downlink digital signal processing as normal operation. Is set in the unit 28 and the uplink digital signal processing unit 30 (412). Then, the process proceeds to process 406.

Also, in the processing 408, when the input communication method is stored as an over-input state signal (in the case of Yes), the monitoring control unit 34, the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30, the input communication method is set, an instruction to close the internal digital filter (noise removal means 41) is output (410), and the process proceeds to processing 406. The instruction to close the digital filter is made by not setting the passband or setting it as “none”.
In this way, the process at the time of transition to the over-input alarm state in the monitoring control unit 34 is performed.

[Effect of the embodiment]
According to the relay amplification device and the relay method according to the embodiment of the present invention, the downlink radio wave reception analysis unit 27 determines the gain value of the relay signal based on the received signal, and the communication method of the received signal is W−. Whether it is CDMA or LTE, and its use band are read and output to the monitoring control unit 34, the monitoring control unit 34 sets the gain value in the downlink analog amplification unit 32 and the uplink analog amplification unit 33, The communication method and the band are set in the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30, and the noise removal means of the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30 is sent from the monitoring control unit 34. Only the set band is allowed to pass, the amplification means amplifies the band-limited signal, the gain control means measures the signal level of the amplified signal, and When the over-output is detected for the signal, control is performed to reduce the gain of the signal of the communication system in the amplification means. When the over-output state of the communication system is not resolved, the monitoring control unit 34 When the monitoring control unit 34 shifts to the over-input alarm state, the communication control unit 34 stores the communication method as an over-input state signal and receives the communication input from the downlink radio wave reception analysis unit 27. If the system is an over-input state signal, the relay amplifying apparatus and the relay method instruct the downlink digital signal processing unit 28 and the uplink digital signal processing unit 30 not to pass the signal in the noise removing unit. Stops relaying for signals of communication methods in which the output status continues, preventing the device from being destroyed and The method signals intact to continue relay, there is an effect that it is possible to improve the reliability and convenience of the communication.

  Further, according to the relay amplification device and the relay method according to the embodiment of the present invention, when the monitoring control unit 34 shifts to the over-input alarm state, the wireless communication unit 36 receives the over-input alarm. Since the instruction is output so as to notify the monitoring center or the like using another communication method, it is possible to reliably notify the monitoring center or the like that an over-input alarm state has occurred. effective.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a relay amplifying apparatus and a relay method that can prevent damage to the apparatus and improve communication services when one of the signals of the W-CDMA wave and the LTE wave is in an excessive input state.

  1, 21 ... Relay amplifier, 2, 22 ... Base station antenna connection terminal, 3, 23 ... Mobile station antenna connection terminal, 4, 24 ... Base station side signal combiner / distributor, 5, 25 ... mobile station side signal combiner / distributor, 6, 26 ... distributor, 7, 27 ... downlink radio wave reception analysis unit, 8, 28 ... downlink digital signal processing unit, 9 , 29 ... Uplink digital signal processing unit, 10, 32 ... Downlink analog amplification unit, 11, 29 ... Downlink output detection unit, 12, 36 ... Uplink analog amplification unit, 31 ... Uplink output detection unit, 14, 34 ... Control unit, 15, 35 ... Power supply unit, 16, 36 ... Wireless communication unit, 17, 37 ... Antenna connection for wireless communication unit Terminal, 18, 38 ... Operation part, 19, 39 ... Power supply terminal, 20, 40 ... Display part

Claims (3)

A relay amplification device that relays W-CDMA waves and LTE waves,
An analysis unit that receives a radio wave, analyzes the received signal, and determines a gain value for relaying the received signal;
An amplifying unit for amplifying the received signal as a whole according to the gain value determined by the analyzing unit;
Noise removal means for passing the signal bands of the W-CDMA wave and the LTE wave, amplification means for amplifying the passed signals, and the over-output states of the W-CDMA wave and the LTE wave, respectively. A line digital signal processing unit including a gain control unit that detects and controls to reduce the gain of the one signal in the amplification unit when one of the signals is in an over-output state;
A control unit that controls the noise removal unit to stop relaying the signal so as not to pass the band of the signal when the over-output state of the one signal in the line digital signal processing unit is not resolved A relay amplification device characterized by that. A relay method in a relay amplifying apparatus that relays a W-CDMA wave and an LTE wave, comprising a line digital signal processing unit that performs signal processing of a received signal and a control unit that controls the line digital signal processing unit,
The line digital signal processing unit passes the band of each of the received W-CDMA wave and LTE wave, amplifies each of the passed signals, and each of the W-CDMA wave and the LTE wave When an overoutput state is detected and one of the signals is in an overoutput state, the amplification gain of the one signal is reduced, and when the control unit does not eliminate the overoutput state of the one signal, A relay method characterized by stopping the relay of the signal by controlling the line digital signal processing unit so as not to pass the band of the signal. A relay amplification device that relays W-CDMA waves and LTE waves,
An analysis unit that receives a radio wave, analyzes the received signal, and determines a gain value for relaying the received signal;
An amplifying unit for amplifying the received signal as a whole according to the gain value determined by the analyzing unit;
Noise removal means for removing noise from each of the W-CDMA wave and LTE wave in the received signal and passing the band of each signal, amplification means for amplifying the noise-removed signal, W-CDMA wave And a line digital signal processing unit comprising gain control means for detecting the over-output state of each of the LTE waves and controlling the gain of the signal in the over-power state in the amplifying means. Amplification equipment.

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