JPH05304693A - Control station for radio network in the event of area disaster - Google Patents

Abstract

PURPOSE:To continue communication with general stations by measuring the time of repeating a call from the control station at its transmission to general stations for each time shorter than the regulated time to end the communication with the general station. CONSTITUTION:When a remote controller 2 is called during a control station 1 communicates with the general station, the prescribed operation is performed on a control section 16. A mode selection section 17 selects an extension communication mode. The information is sent to a radio equipment control section 110 which recognizes it to make a transmission to an extension communication instruction output section 18 requiring the communication with the device 2. Then the output section 18 gives a signal to call the device 2 to a channel connection control 21, sending it to the general stations from the control section 110 to a radio equipment transmitter-receiver 19. The control section 110 counts the duration by means of a built-in counter, making a transmission to the general stations for the set time. Thus, the communication can be continued even though the call time is prolonged. The regulated time to end the communication is set shorter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control station of a regional disaster prevention wireless network.

[0002]

2. Description of the Related Art Generally, in a local disaster prevention wireless network, when individual communication is performed between wireless stations, if communication is not performed for 10 seconds, the communication must be terminated by regulation. For this reason, for example, when the control station operates the extension communication to call the remote control device attached to the control station while communicating with the general station, the response of the remote control device is delayed and the communication with the general station is 10 seconds or more. If it stops, the communication circuit will be forcibly disconnected. Therefore, it is necessary to make communication with the general station again, which is troublesome and
There was also the risk that the transmission of important information such as disasters would be delayed.

[0003]

As described above, when the control station calls the remote control device attached to the control station during individual communication with the general station, the response of the remote control device being called is delayed. If there is no communication with the station for 10 seconds or more, there is a problem that the communication is forcibly terminated due to the regulations of the local disaster prevention radio.

Therefore, the present invention eliminates this problem, and while the control station is calling the remote control device during communication with the general station, even if 10 seconds or more have not been in communication with the general station. The purpose is not to terminate communication.

[0005]

According to the present invention, a control station for a regional disaster prevention radio network, when calling a remote control device attached to the control station during communication with a general station, counts the duration of the call. Means for disaster prevention, and a transmission means for transmitting to the general station each time a certain period of time shorter than a predetermined prescribed time at which communication with the general station has to be terminated. Provides a control station for wireless networks.

[0006]

According to the present invention, when the control station in communication with the general station calls the remote control device attached to the control station, the control station temporarily suspends communication with the general station and counts the time during which the control station calls. It is measured by means. While the call is being made to the remote control device, transmission is performed to the general station at regular intervals set to be shorter than a specified time (for example, 10 seconds) by the transmitting means. The communication with the station is not interrupted for more than the specified time, and the communication does not end even if the calling time becomes long.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows the configuration of a control station 1 and a remote control device 2 provided in association therewith. The control station 1 includes a radio transmitter / receiver 19 for performing radio communication with a general station (not shown) and a radio controller 110 for controlling the radio transmitter / receiver 19. The radio transmitter / receiver 19 includes a transmitter / receiver signal processor 1
The voice information transmitting / receiving device 11, the facsimile device 12, and the data terminal device 13 are connected via the communication terminal 4. The signal sent from the voice information sending / receiving device 11, the facsimile device 12, or the data terminal device 13 is converted into an appropriate signal format by the sending / receiving signal processing unit 14 and sent to the wireless device sending / receiving unit 19. , Wirelessly transmitted to general stations. A signal transmitted from the general station and received by the radio transmitter / receiver 19 is converted into an appropriate signal format by the transmitter / receiver signal processor 14, and the voice information transmitter / receiver 11 and the facsimile 1
2, or sent to the data terminal device 13. Further, a display unit 15 is coupled to the radio device control unit 110, and information necessary for communication is displayed here. Further, a mode selection unit 17 is connected to the radio device control unit 110, and an operation unit 16 is connected to the mode selection unit 17. When the operator of the control station 1 operates the operation unit 16, the mode selection unit 17 selects the simultaneous control communication mode, the general communication mode, or the extension communication mode, and the radio device performs an operation according to the selected mode. Information is sent to the control unit 110, and the wireless device control unit 110 controls the wireless device transmission / reception unit 19 and the remote control device 2 so as to realize the selected mode. Further, an extension communication command output unit 18 is coupled to the radio equipment control unit 110, which receives a command from the radio equipment control unit 110 when the extension communication mode is selected by the mode selection unit 17 and performs remote control. A signal for calling the device 2 is given to the communication path connection control unit 21. The remote control device 2 is connected to the control station 1 via the communication path connection control unit 21. Call path connection control unit 2
1, a data terminal device 24, a facsimile device 25, and a handset 26 are connected via a transmission / reception signal processing unit 24. An arithmetic processing unit 23 is coupled to the communication path connection control unit 21, and the operation unit 2 is connected to the arithmetic processing unit 23.
7. The display unit 28 is connected. When the extension communication command output unit 18 of the control station 1 provides the call connection control unit 21 with information to call the remote control device 2, the call connection control unit 21 communicates with the radio device control unit 110 of the control station 1. The communication path is connected so that the control station 1 and the remote control device 2 can communicate with each other. A control signal, for example, a calling signal sent from the radio device control unit 110 of the control station 1 to the remote control device 2 is sent from the communication path connection control unit 21 to the arithmetic processing unit 23 and displayed on the display unit 28. Further, various control signals sent from the operation unit 27 are processed by the arithmetic processing unit 23, and pass from the arithmetic processing unit 23 through the communication path connection control unit 21 to the control station 1.
Is sent to the wireless device controller 110. Further, a signal output from the data terminal device 24, the facsimile device 25, or the handset 26 of the remote control device 2 is processed by the transmission / reception signal processing unit 22 into an appropriate signal format, and the signal is transmitted from the transmission / reception signal processing unit 22. It is sent to the wireless device control unit 110 of the control station 1 through the communication path connection control unit 21. Also control station 1
The signal transmitted from the radio transmitter / receiver 19 of the remote controller 2 to the communication path connection controller 21 of the remote controller 2 is processed by the transmitter / receiver signal processor 22 into an appropriate signal format, and the data terminal device 2
4. Facsimile device 25 or handset 26
Sent to.

Next, the operation when the control station 1 calls the remote control device 2 for some reason while wirelessly communicating with a general station (not shown) will be described. First, a predetermined operation for performing extension communication with the remote control device 2 is performed on the operation unit 16, whereby the extension communication mode is selected by the mode selection unit 17, and information indicating that is selected as the radio device control unit 110. Sent to. The wireless device control unit 110 recognizes the information and transmits to the extension communication command output unit 18 a message indicating that the extension communication command output unit 18 wants to perform extension communication with the remote control device 2. A signal for calling the control device 2 is given to the communication path connection control unit 21. Then, the radio control unit 110 transmits to the general station through the radio transmission / reception unit 19. Then, the wireless device control unit 110 starts counting the calling duration time for the remote control device 2 by the built-in counting means, and until the calling is completed, the built-in transmitting means is set at every preset time shorter than 10 seconds. Then, the data is transmitted to the general station through the wireless transmitter / receiver 19. This prevents the communication from being terminated even if the calling time becomes long. The above-mentioned operation is performed in the radio device control unit 110, and the call path connection control that receives the call signal from the extension communication command output unit 18 in a state where the communication circuit with the general station is not disconnected The unit 21 connects the communication path with the radio device control unit 110 of the control station 1, and the arithmetic processing unit 23.
To the display unit 28 to display that there is a call request from the control station 1. When the operator of the remote control device 2 that recognizes this takes the handset 26 off hook, voice communication between the remote control device 2 and the general station becomes possible.

Among the above operations, the radio device control section 11
The operation performed at 0 will be mainly described again with reference to FIG. FIG. 2 shows a radio device control unit 11 when extension communication with the remote control device 2 is performed during communication with a general station.
9 is a flowchart showing a process performed by 0. Control station 1
However, when the remote control device 2 is called for some reason during communication with the general station, the operator of the control station 1 performs a predetermined operation on the operation unit 16 so that the mode selection unit 17
The extension communication mode is selected by and the wireless device control unit 110 receives information that there is a call request for the remote control device 2 (S1). Then, the radio device control unit 110 transmits the call to the remote control device 2 to the extension communication command output unit 18, and the extension communication command output unit 1.8 receives the call and the communication path connection control unit in the remote control device 2 is received. A calling signal is sent to 21 (S2). Then, the wireless device control unit 110 transmits to the general station via the wireless device transmission / reception unit 19 (S
3) The built-in counter is reset to start counting the time from the start of calling the remote control device 2 (S4). Then, it is checked whether or not the calling of the remote control device 2 is completed (S5), and if the remote control device 2 responds and the calling is completed, between the remote control device 2 and the general station, If the remote control device 2 does not respond but the call is terminated, communication is resumed between the control station 1 and the general station (S6). If the remote control device 2 is not called, the call duration measured by the counter and the set time shorter than 10 seconds, which is the specified time at which communication is ended (in this case, Compare it with 7 seconds. (S
7) If the counter value has not reached 7 seconds, it is repeatedly checked whether or not the calling of the remote control device 2 is completed until it reaches 7 seconds (S5). Communication is restarted (S6). When the counter value reaches 7 seconds, transmission is performed to the general station through the wireless transmitter / receiver unit 19 so as not to disconnect the communication circuit with the general station (S3), and The counter that has been measuring the call duration time is reset and a new count is started (S4). Since the above steps are repeated, the time during which the communication with the general station is interrupted does not exceed the specified time of 10 seconds.

[0010]

As described above, when the control station calls the remote control device while communicating with the general station, the specified time (for example, 10 seconds) during which communication is not completed elapses during communication. Since the transmission is automatically performed to the general station before, the communication line with the general station is not disconnected even if the calling time becomes long, and the information can be smoothly transmitted.

[Brief description of drawings]

[Figure 1] Configuration diagram of control station and remote control device

FIG. 2 is a flowchart showing a process of a wireless device control unit.

[Explanation of symbols]

 1 Control Station 2 Remote Control Device 16 Operation Unit 17 Mode Selection Unit 18 Extension Communication Command Output Unit 19 Radio Transmission / Reception Unit 21 Call Path Connection Control Unit 110 Radio Control Unit

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[Procedure amendment]

[Submission date] May 14, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

Claims (1)

[Claims] 1. A control station for a regional disaster prevention wireless network, when a remote control device attached to the control station is called during communication with a general station, a counting means for measuring the duration of the call.
A local disaster radio network, comprising: a transmitting unit that transmits to the general station every time a certain time shorter than a predetermined prescribed time at which communication with the general station must be terminated. Control bureau.