JPH0846579A - Monitor control method for radio repeater station - Google Patents

Abstract

PURPOSE:To provide a monitor control method for a radio repeater station to prevent the simultaneous deterioration of quality of both communication and monitor control signals and also to reduce the quantity of monitor control information. CONSTITUTION:A radio repeater station 2 monitors its on operating state and transmits the monitor information 4 to a monitor toll center 1 by frequency fc when the deterioration of communication quality or a machine fault is detected. The center 2 collectively monitors the stations 2 and also sends the control information by the frequency fc to control the stations 2. Thus each stations 2 is controlled based on its control information. The monitor control frequency fc is different from the communication frequencies 1 and f2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control method for a wireless relay station.

[0002]

2. Description of the Related Art A conventional method for monitoring and controlling a wireless relay station is shown in FIG.
Shown in The monitoring central station 21 includes a plurality of wireless relay stations 22-1 to 22-1.
22-3 shows the case of monitoring. A station number is assigned to each wireless relay station, and the monitoring central station 21 calls the wireless relay station by the station number in order by the centralized device monitoring controller 23. As an example, when the wireless relay station 22-3 is monitored, the wireless relay station 22-3 that receives the call changes the state of the monitoring items of the wireless relay apparatuses 9-5 and 9-6 of its own station by the device monitoring controller 24. To the monitoring central station 21 and make a response. After receiving this response, the monitoring central station moves on to call the next station. By repeating this in sequence, the monitoring central station 21 monitors each wireless relay station.

At this time, the calling signal is transmitted as follows. The paging signal is inserted into the communication signal by the centralized equipment monitoring controller 23 and the modulator 12-3 in the supervisory central station 21 and then modulated and transmitted to the corresponding wireless relay station. In the wireless relay station, the received signal is demodulated by the demodulation device 15-4 and the device monitoring control device 24, and then the calling signal is separated from the communication signal. Similarly, the response signal is transmitted from the wireless relay station to the monitoring central station.

[0004]

By the way, in the above-mentioned conventional supervisory control method, the surveillance information of each relay station is constantly sent to the supervisory centralized station as a large amount of raw data in response to the supervisory control request from the supervisory centralized station. ing. Further, a supervisory control signal (calling signal and response signal) is inserted in the communication signal and transmitted. Therefore, for example, in a wireless system affected by rainfall or the like, there is a problem that quality deterioration of a communication signal and quality deterioration of a supervisory control signal occur at the same time.

The present invention has been made under such a background, and an object thereof is to avoid simultaneous deterioration of the quality of communication signals and supervisory control signals, and further to reduce the amount of supervisory control information. And

[0006]

The feature of the present invention for achieving the above object is that a monitoring central station remotely monitors and controls the operating state of a wireless relay device installed in at least one wireless relay station. In the monitoring and control method, the wireless relay station monitors the operating state of the wireless relay device, and when the communication quality deteriorates or a device failure occurs, the monitoring information is wirelessly transmitted to the central monitoring station, and the centralized monitoring is performed. The station receives the monitoring information sent wirelessly from each wireless relay station and collectively monitors the operating state of each wireless relay apparatus. Furthermore, the monitoring central station controls the wireless relay apparatus by controlling information. Wirelessly to the corresponding wireless relay station, and the wireless relay station receives the control information wirelessly sent from the monitoring central station, controls the wireless relay device, and sends the monitoring information and the control information. The biography of It is carried out by different radio frequency from the radio frequency communication signal.

[0007]

FIG. 1 shows the principle of the present invention. Consists of a monitoring central station 1 and a wireless relay station 2. The wireless relay station 2 monitors the operating state of the wireless relay device (3), and when the communication quality deteriorates or equipment failure occurs, the monitoring information is monitored by the central station. 1
(4), and the monitoring central station 1 receives the monitoring information wirelessly sent from each wireless relay station,
The operating states of the wireless relay devices are collectively monitored (5), and the monitoring central station 1 wirelessly transmits control information for controlling each wireless relay device to the corresponding wireless relay station (6). ), The wireless relay station 2 receives the control information wirelessly sent from the monitoring central station 1 and controls the wireless relay device (7). At this time, the wireless frequency for the communication signal is The monitoring information and the control information are transmitted using different radio frequencies.

According to the present invention, all the wireless relay stations in the area can be collectively monitored by the monitoring central station regardless of the wireless system. Further, the supervisory control signal can be transmitted between the supervisory central station and the radio relay station without affecting the quality deterioration of the communication signal.

Further, instead of constantly transmitting a large amount of raw data to the monitoring central station, the monitoring information can be transmitted to the central monitoring station only when the line quality is deteriorated due to equipment failure or fading. it can.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of the supervisory control method according to the first embodiment of the present invention. The monitoring central station 8 in the figure forms a wireless route from the wireless relay station 16 with a wireless frequency band of f1. The monitoring central station 8 has a wireless relay device 9-1 of this route and a wireless frequency band fc.
The centralized device monitoring control apparatus 11 using (hereinafter, fc is referred to as a monitoring control signal frequency) is provided. Here, the supervisory control signal frequency fc is different from f1. Wireless relay station 16
Includes a wireless relay device 9-2, and further includes a device monitoring control device 17 using the monitoring control signal frequency fc.

The state of the wireless relay device 9-2 of the wireless relay station 16 is monitored by the device monitoring control device 17. The monitoring information at this time is output from the equipment monitoring control device 17 and input to the modulation device 12-2 to be modulated. This modulated signal is input to the transmitter 13-2, converted into the supervisory control signal frequency fc, and then transmitted to the supervisory central station 8 by the antenna 10-2. The monitoring information input from the antenna 10-1 to the receiving device 14-1 in the monitoring central station 8 is converted from the radio frequency band to the intermediate frequency band by the receiving device 14-1 and input to the demodulating device 15-1. After the received signal is demodulated by the demodulator 15-1,
It is input to the centralized equipment monitoring control device 11.

Centralized equipment monitoring controller 11 of the monitoring central station 8
At, the corresponding control information is created based on the monitoring information from the wireless relay station 16. This control information is used by the modulator 1.
After being input to 2-1 and modulated, it is input to the transmitting device 13-1 and converted into the supervisory control signal frequency fc, and transmitted to the wireless relay station 16 by the antenna 10-1.

In the radio relay station 16, the control information transmitted from the monitoring central station 8 is demodulated after being received by the receiving device 14-2 and the demodulating device 15-2, and the device monitoring control device 1
7 is input. The device monitoring control device 17 controls the wireless relay device 9-2 such as line switching based on the input control information.

In this way, the monitoring central station 8 monitors and controls the wireless relay station 16.

With such a configuration, the judgment information of the wireless relay station can be transmitted to the monitoring central station wirelessly only when the line quality is deteriorated or the device failure occurs.
Communication at low speed is possible. Further, since the frequency band of the communication signal and the supervisory control signal frequency are different, for example, even when a short-distance wireless route causes a momentary interruption in the communication signal due to rainfall, the supervisory control information is transmitted between the monitoring central station and the wireless relay station. Can be transmitted between.

FIG. 3 is a diagram showing the configuration of the supervisory control method according to the second embodiment of the present invention. The monitoring central station 18 in the figure sets the radio frequency band to f from the radio relay stations 19-1 and 19-2.
1 to form a wireless route 1, and further the wireless relay station 20
A radio route 2 having a radio frequency band of f2 is formed from -1 to 20-4.

In this example, by using the radio frequency band fc described in the first embodiment, the monitoring central station 18 collectively sets a plurality of radio relay stations of the radio route 1 and the radio route 2 to the radio system. It can be monitored and controlled locally regardless of the situation.

[0018]

As described above, unlike the conventional supervisory control method based on the wireless system, by performing the supervisory control method of the present invention, all the wireless devices in the area are collectively managed by the supervisory central station. It becomes possible to monitor it. Also,
Since it is possible to prevent the quality deterioration of the communication signal and the quality deterioration of the supervisory control signal from occurring at the same time, it is possible to perform high-quality supervisory control. Further, since the judgment information is transmitted to the monitoring central station only when a device failure or fading occurs, there is an advantage that maintainability is improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 shows a first embodiment of the present invention.

FIG. 3 is a second embodiment of the present invention.

FIG. 4 is a configuration example of a conventional monitoring control method.

[Explanation of symbols]

1, 8, 18, 21 Monitoring central station 2, 16, 19-1, 19-2, 20-1 to 20-4
Radio relay station 9-1 to 9-6 Radio relay device 10, 10-1, 10-2 Transmission / reception shared antenna 11, 23 Centralized device monitoring control device 17, 24 Device monitoring control device 12-1 12-5 Modulator 13 -1 to 13-5 Transmitter 14-1 to 14-5 Receiver 15-1 to 15-5 Demodulator

Claims (1)

[Claims] 1. A monitoring and control method in which a monitoring central station remotely monitors and controls the operating state of a wireless relay device installed in at least one wireless relay station, wherein the wireless relay station is the operating state of the wireless relay device. When the communication quality deteriorates or equipment failure occurs, the monitoring information is wirelessly transmitted to the central monitoring station, and the central monitoring station monitors the monitoring information sent wirelessly from each wireless relay station. Receives and collectively monitors the operating status of each wireless relay device, and the monitoring central station wirelessly transmits control information for controlling each wireless relay device to the corresponding wireless relay station, and wireless relay The station receives the control information sent by radio from the monitoring central station and controls the wireless relay device, and the monitoring information and the control information are transmitted by a radio frequency different from the radio frequency for communication signals. Supervisory control method and performing.