JP4462439B2 - Hot standby microwave radio apparatus, monitoring control method thereof, and monitoring control program thereof - Google Patents

Description

  The present invention relates to a monitoring control method for a microwave radio apparatus adopting a hot standby system.

  Conventionally, there is a hot standby microwave radio apparatus that has a plurality of transmitters and switches to another transmitter when a failure occurs in one transmitter. A system for monitoring and controlling the hot standby type microwave radio apparatus using a network monitoring protocol will be described with reference to FIG.

  In FIG. 3, the configurations 2a and 3a for transmission / reception in three directions from the microwave radio apparatus 2 are described in detail, and the configurations 3b and 2b for transmission / reception in the two directions from the microwave radio apparatus 3 are simplified. The configuration is the same as 2a and 3a.

  In FIG. 3, a signal input to the input terminal 11 is distributed by the distributor 12, input to the modulators 13a and 13b, and converted into a modulated signal. The modulated signal is sent to transmitters 14a and 14b and amplified. The transmission switch 15 selects and outputs an amplified signal of a system in which no device failure has occurred. The signal is transmitted from the transmission antenna 16 and received by the reception antenna 17.

  The received signal is distributed by the distributor 18, amplified by the receivers 19a and 19b, and sent to the demodulators 20a and 20b. The signals demodulated by the demodulators 20 a and 20 b are sent to the reception switching unit 21, and either system signal is selected from the equipment failure status and the line quality status, and is output to the output terminal 22.

  The monitoring control panel 30 constantly monitors the alarm occurrence status and operational status of its own device, and communicates with the monitoring control device using a network monitoring protocol to obtain a status acquisition request or control request from the monitoring control device. Also respond to. On the other hand, it has a function of notifying an event occurring in its own device to the monitoring control device as notification event information 40.

Also, the isolation of the switch is reduced by controlling the output frequency of the standby transmission unit that is not selected by the switch so that the output frequency is separated from the output wave number of the transmission unit selected by the switch. There is a hot standby switching device in a microwave multiplex radio device (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 05-175881

  However, a system that performs monitoring control of a conventional hot standby microwave radio device using a network monitoring protocol has the following problems.

  Regardless of the occurrence of transmission switching, the event that occurred in each device is immediately notified, so the event notified between the occurrence of transmission switching and the completion of signal synchronization processing by the demodulator of the opposite device is lost. Will end up.

  In a conventional system for monitoring and controlling a hot standby type microwave radio device, an event occurring in each device is immediately notified regardless of the occurrence of transmission switching. The event notified until the signal synchronization processing is completed will be lost.

  Therefore, the present invention can reliably notify the monitoring and control apparatus of the event that occurred during the instantaneous interruption and the event that occurred during the instantaneous interruption even when there was an instantaneous interruption due to the transmission switching of the hot standby type microwave radio apparatus. An object of the present invention is to provide a hot standby microwave radio apparatus, a monitoring control method thereof, and a monitoring control program thereof.

  In order to solve the above-described problem, the present invention provides a demodulator of a counter wireless device from a switching occurrence when a transmission switching of the own device occurs in a hot standby type microwave wireless device connected to a supervisory control device over a network. The events that occurred during the period until the signal synchronization processing is completed are stored in the transmission buffer of the monitoring control panel, and the event is sent to the monitoring control device after the signal synchronization processing of the demodulator of the opposite radio device is completed. It is characterized by notifying.

  With the above configuration, events are recorded while transmission switching of the hot standby microwave radio device is occurring, and monitoring is performed by notifying the event after the demodulator of the opposite radio device completes the signal synchronization processing. An event can be reliably notified to the control device.

  The present invention accumulates events during transmission switching in a hot standby microwave radio device connected to a supervisory control device over a network, and after the demodulator of the opposite radio device completes signal synchronization processing. Since the event is notified, the event can be surely notified to the monitoring control device.

  Next, the best mode of the present invention will be described with reference to the drawings.

  FIG. 1 shows an example of a system configuration for monitoring and controlling a hot standby type microwave radio apparatus according to the present invention. As the network monitoring protocol, for example, SNMP (Simple Network Management Protocol) is used. The supervisory control device 1 uses a microwave radio device as an SNMP manager through a supervisory control line multiplexed with radio signals and the microwave radio devices 2, 3, 4, 5, 6, 7 to be monitored. Communication is performed as an SNMP agent. Thus, alarm information generated in each wireless device is collected, and various controls are executed on each wireless device.

In SNMP, the manager periodically receives management information base (MIB) management information reports from the agent using the following five types of commands by UDP (User Datagram Protocol).
Get Request (Manager → Agent): Requests acquisition of management information.
Get Next Request (Manager → Agent): Requests acquisition of the next management information.
Get Response (Agent → Manager): Reports the content of requested management information.
Set Request (Manager → Agent): Requests management information change,
Trap (agent-> manager): Voluntarily notifies the status of management information.

  Each microwave radio apparatus realizes each function described below by a control program stored in the memory, and when an event such as a failure occurs, the microwave radio apparatus notifies itself to the monitoring control apparatus 1 ( trap command) function.

  Next, a typical configuration example of each hot standby type microwave radio apparatus will be described with reference to FIG. In FIG. 2, the configurations 2a and 3a for transmission / reception in three directions from the microwave radio apparatus 2 are described in detail, and the configurations 3b and 2b for transmission / reception in the two directions from the microwave radio apparatus 3 are simplified. The configuration is the same as 2a and 3a. The microwave radio apparatuses 4 and 5, 6 and 7 have the same configuration.

  In FIG. 2, the signal input to the input terminal 11 is distributed by the distributor 12, input to the modulators 13a and 13b, and converted into a modulated signal. The modulated signal is sent to transmitters 14a and 14b and amplified. The transmission switch 15 selects and outputs an amplified signal of a system in which no device failure has occurred. The signal is transmitted from the transmission antenna 16 and received by the reception antenna 17.

  The received signal is distributed by the distributor 18, amplified by the receivers 19a and 19b, and sent to the demodulators 20a and 20b. The signals demodulated by the demodulators 20 a and 20 b are sent to the reception switching unit 21, and either system signal is selected from the equipment failure status and the line quality status, and is output to the output terminal 22.

  The monitoring control panel 30 constantly monitors the alarm generation status and the operating state of its own device, and communicates with the monitoring control device 1 in FIG. 1 using a network monitoring protocol such as SNMP, whereby the monitoring control device 1 It also responds to status acquisition requests and control requests from. On the other hand, an event occurring in the own device has a function of notifying the monitoring control device 1 as notification event information 40.

  Further, the monitoring control panel 30 monitors the system selection information 41 of the transmission switch 15 and when transmission switching occurs, the demodulator 20a, 20b of the opposite radio apparatus completes the signal synchronization processing from the switching occurrence. Events that have occurred so far are stored in the transmission buffer 31, and when the completion of signal synchronization processing of the demodulator 20a, 20b of the opposite radio apparatus is detected, the event is notified to the monitoring control apparatus 1.

  Next, the operation of the present invention will be described with reference to FIGS.

  When an event such as an alarm occurs in each microwave radio apparatus, the monitoring control panel 30 notifies the monitoring control apparatus 1 using a trap command or the like. The notification is transmitted via the supervisory control line multiplexed with the radio signal by the modulators 13a and 13b. However, since the radio apparatus according to the present invention is a hot standby system, the transmission switch 15 switches the transmission. Will occur and will be momentarily interrupted until the demodulator 20a, 20b of the opposing device completes the signal synchronization after switching. For this reason, if an event that should be notified to the monitoring control device 1 occurs during this momentary disconnection, the notification will not reach the monitoring control device 1 if it is immediately notified.

  In the present invention, the monitoring control panel 30 monitors the system selection information 41 of the transmission switcher 15 until transmission switching occurs until the demodulator 20a, 20b of the opposite device completes the signal synchronization processing. The transmission of the event to be notified is stopped for the maximum time and accumulated in the transmission buffer 31. When the signal synchronization processing completion time elapses, notification of events accumulated in the transmission buffer is started.

  In this embodiment, the configuration is such that the demodulator of the opposite wireless device detects the completion of the signal synchronization processing in a preset time, but the demodulator completes the signal synchronization processing from the opposite wireless device. It is also possible to adopt a configuration in which the synchronization process is detected in response to the synchronization process completion signal indicating that the process has been performed.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a monitoring control system for a wireless communication apparatus that has a plurality of transmitters and switches to another transmitter when a failure occurs in one transmitter.

It is a figure which shows the structural example of the monitoring control system of the microwave radio | wireless apparatus by this invention. It is a figure which shows the structural example of the microwave radio | wireless apparatus by this invention. It is a figure which shows the structural example of the conventional microwave radio | wireless apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Monitoring and control apparatus 2,3,4,5,6,7 Microwave radio | wireless apparatus 11 Input terminal 12 Dividers 13a and 13b Modulators 14a and 14b Transmitter 15 Transmission switcher 16 Transmitting antenna 17 Receiving antenna 18 Divider 19a, 19b Receiver 20a, 20b Demodulator 21 Reception switcher 22 Output terminal 30 Monitoring control panel 31 Transmission buffer 40 of monitoring control panel Notification event information 41 System selection information of transmission switching unit

Claims (6)

In the hot standby type microwave radio device connected to the supervisory control device over the network,
A transmission buffer for accumulating monitoring information in the own device for transmission to the monitoring control device;
Means for outputting system selection information when transmitter switching occurs;
Means for storing, in the transmission buffer, an event that occurs from the occurrence of switching of the transmitter until the demodulator of the opposing wireless device completes the signal synchronization processing;
Means for notifying the monitoring and control device of events accumulated in the transmission buffer after the completion of synchronization processing of the demodulator.   2. The hot standby system micro of claim 1, wherein the microwave radio apparatus is supervised and controlled by using the monitoring control apparatus as an SNMP (Simple Network Management Protocol) manager and the microwave radio apparatus as an SNMP agent. Wave radio device. A monitoring control method for a hot standby type microwave radio device connected to a monitoring control device over a network,
System selection information is output when transmitter switching occurs.
A transmission buffer for accumulating monitoring information in its own device for transmitting to the monitoring control device an event that occurs from the occurrence of switching of the transmitter until the demodulator of the opposing wireless device completes signal synchronization processing Accumulate in
A monitoring control method for a hot standby type microwave radio apparatus, comprising: steps for notifying the monitoring control apparatus of events accumulated in the transmission buffer after the completion of synchronization processing of the demodulator.   The monitoring control of the hot standby type microwave radio apparatus according to claim 3, wherein the microwave radio apparatus is monitored and controlled by using the supervisory control apparatus as an SNMP manager and the microwave radio apparatus as an SNMP agent. Method. A monitoring control program for a hot standby type microwave wireless device connected to a monitoring control device over a network,
A function to output system selection information when a transmitter switch occurs,
A transmission buffer for accumulating monitoring information in its own device for transmitting to the monitoring control device an event that occurs from the occurrence of switching of the transmitter until the demodulator of the opposing wireless device completes signal synchronization processing The function to accumulate in
A monitoring control program for a hot standby type microwave radio device, which causes a computer to realize a function of notifying the monitoring control device of an event stored in the transmission buffer after completion of synchronization processing of the demodulator.   6. The hot standby system micro of claim 5, wherein the microwave wireless device causes a computer to realize a function of being monitored and controlled by using the monitoring control device as an SNMP manager and the microwave wireless device as an SNMP agent. Monitoring control program for wave radio equipment.

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