JP3006114B2 - Power control method for earth station equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control system for an earth station device, and more particularly to a system for controlling a plurality of satellite communication earth stations having three or more stations.
The present invention relates to a power supply control method for reducing power consumption of a communication signal receiving device of an earth station when a request assignment satellite communication method for performing communication by sharing one or more transmission paths is used.

[0002]

2. Description of the Related Art Generally, in a request assignment satellite communication system in which three or more satellite communication earth stations communicate by sharing two or more transmission paths, a control station manages a common transmission path and transmits data in response to a request. In order to assign a channel, a common signal transmission channel for transmitting transmission channel assignment information between the control station and each earth station is required. In recent years, by utilizing the feature of broadcasting of satellite communication, transmission is performed from one station and received by multiple stations.
Communication is often performed in a so-called broadcast mode. When performing broadcast mode communication using the request assignment satellite communication system, each earth station normally receives a common signal sent from the control station, and when there is communication, controls using the common signal. A communication signal frequency is allocated from the station, and the communication signal receiving device receives the communication signal. A satellite communication earth station which is not a control station in such a request assignment satellite communication system has a configuration as shown in FIG.

[0003] That is, a common antenna 1 for transmission and reception, a low noise amplifier (LNA) 2 as a receiving unit, a reception frequency converter (D / C) 3, a distributor 4, a communication signal receiving device 11, a communication signal terminal device 12, and The common signal transmitting / receiving device 5 includes a common signal demodulation unit 6 and a common signal processing unit 7. Also, the common signal modulator 8 and the transmission frequency converter (U
/ C) 9, a high power amplifier 10 is provided. The communication signal receiving device 11 receives a reception signal specified by a control station described later, converts the synthesizer 52 to a specified frequency and performs reception conversion, a MIX 51 that performs reception conversion by a phase-synchronized VCO 55, a demodulation unit 54, Processing unit 5
6. Logic unit 5 that performs logic processing of a control signal from a control station
7. It comprises a power supply unit 58. Such a controlled station transmits a common signal transmitted from the control station via a satellite through an antenna 1, a low noise amplifier (LNA) 2, a reception frequency converter (D / C) 3, and a distributor 4. The signal is received by the common signal demodulation unit 6 of the transmission / reception device 5. Common signal demodulation unit 6
Then, the signal sent from the distributor 4 is sent to the common signal processing unit 7.
Has passed. When the communication frequency is designated by the common signal from the control station, the common signal processing unit 7 causes the logic unit 57 of the communication signal receiving device 11 to set the communication frequency to the designated communication frequency.
The frequency control signal 101 is passed to the
At 03, the frequency synthesizer 52 is controlled. Information notifying that the control has been performed is transmitted from the common signal processing unit 7 to the common signal modulation unit 8, and transmitted to the control station via the transmission frequency converter (U / C) 9, the high power amplifier (HPA) 10, and the antenna 1. Then, the satellite communication is performed by the communication signal receiving device 11 and the communication signal terminal device 12. In this case, the communication signal receiving apparatus 11 was always supplied with power from the power supply unit 58.

[0004]

In the above-described conventional power control method for the earth station apparatus, the common signal transmitted from the control station to each earth station is generally a continuous signal, and the control signal before communication is performed. From this point of view, each earth station must always receive a common signal, but a communication signal only needs to be received when performing communication, and the communication time is at most several hours a day. Nevertheless, even when communication is not being performed, power is always supplied to the communication signal receiving device, and there is a disadvantage that power consumption cannot be reduced.

An object of the present invention is to provide a power supply control method capable of reducing the power consumption of an earth station controlled by a simple configuration.

[0006]

The power supply control method of the earth station apparatus of the present invention uses a request assignment satellite communication method in which three or more satellite communication earth stations communicate by sharing two or more transmission paths. Signal control means for receiving a common signal from a control station, common signal processing means for demodulating and processing the received common signal, and common signal processing performed by the common signal processing means. A common signal transmitting and receiving device having a common signal transmitting means for transmitting a signal to a control station, and a communication signal receiving means for receiving an instruction of a communication frequency from the control station and receiving communication with another communication earth station; A communication unit comprising: a power supply unit whose output is controlled by control from a logic unit; and a unit that receives a signal from a common signal processing unit of the common signal transmitting / receiving device by the logic unit and sends a control signal to the power supply unit. Signal receiving device, and when the communication signal receiving device is not receiving, the common signal processing means of the common signal transmitting / receiving device communicates with the logic unit of the communication signal receiving device to supply power to the communication signal receiving device. Is temporarily stopped.

[0007]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention. In the embodiment of FIG. 1, the same reference numerals as those in the conventional example of FIG. 2 have the same configuration and function. That is, in this embodiment, the communication status notification signal 102 is sent from the common signal processing unit 7 to the logic unit 57, and the power control signal is sent from the logic unit 57 to the power supply unit 58.
Sent to

In this embodiment, as shown in FIG. 1, the common signal processing unit 7 of the common signal transmitting / receiving device 5
A communication status notification signal 102 is sent to the first logic unit 57 to notify whether the communication signal receiving device 11 is in a communication status. When the logic unit 57 of the communication signal receiving apparatus 11 is not in the communication state according to this information, the power supply unit 58 is controlled by the power supply control signal 104 to control the power supply of the communication signal receiving apparatus 11. Power is supplied to all parts of the communication signal receiving device 11. If the power supply is stopped once, such as the logic unit 57 and the frequency synthesizer 52, the power supply control should be performed except for the part where it takes a long time for the electrical characteristics after supply to satisfy the standard value. ,
Power consumption can be reduced without any problem in characteristics. Regarding the problem of the reliability of the device caused by controlling the power when not in the communication state, the communication signal receiving device
If power is supplied for a short period of time to all parts of 1 to check for a failure or the like, the reliability is not lost. The time to supply power to all parts may be from a few seconds to at most ten and a few seconds,
There is no problem in reducing power consumption.

[0009]

As described above, according to the power supply control method for an earth station apparatus of the present invention, a request allocation in which three or more satellite communication earth stations share two or more transmission paths for communication. When using the satellite communication method, when the communication signal receiving device is not receiving a communication signal, a portion of the communication signal receiving device that receives a signal from the common signal transmitting / receiving device,
In other words, the power supply other than the logical part is stopped, so that the power consumption can be reduced. Also, the communication signal receiving device for periodically supplying short-time power to the communication signal receiving device to check for a failure or the like is provided. There is an effect that the reliability of the device is not impaired.

[Brief description of the drawings]

FIG. 1 is a block diagram of a power control method for an earth station device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional power control method for an earth station device.

[Description of Signs] 1 antenna 2 LNA 3 D / C 4 distributor 5 common signal transmitting / receiving device 6 common signal demodulating unit 7 common signal processing unit 8 common signal modulating unit 9 U / C 10 HPA 11 communication signal receiving device 12 communication signal Terminal device 51, 53 MIX 52 synthesizer 54 demodulation unit 55 VCO 56 data processing unit 57 logic unit 58 power supply unit 101 reception frequency control signal 102 communication status notification signal 103 frequency control signal 104 power control signal

Claims (2)

(57) [Claims] 1. A power control method for an earth station apparatus using a request assignment satellite communication system in which three or more satellite communication earth stations communicate by sharing two or more transmission paths. Common signal receiving means for receiving the common signal, common signal processing means for demodulating and processing the received common signal, and common signal transmitting means for transmitting the common signal processed by the common signal processing means to a control station. A transmitting and receiving device, a communication signal receiving means for receiving a communication frequency instruction from the control station and receiving communication between other communication earth stations, and a power supply means whose output is controlled by control from a logic unit, A logic signal receiving means for receiving a signal from the common signal processing means of the common signal transmitting / receiving apparatus, and a communication signal receiving apparatus having means for sending a control signal to a power supply means, wherein the communication signal receiving apparatus receives In the case where there is no earth station device, the common signal processing means of the common signal transmitting / receiving device and the logic part of the communication signal receiving device communicate with each other, and control is performed to temporarily cut off the power supply of the communication signal receiving device. Power control method. 2. The earth station according to claim 1, wherein said common signal processing means performs power supply control for a short time after a predetermined time has elapsed after power-off of said communication signal receiving apparatus, and checks for a failure. The power control method of the device.