JP7025248B2 - Wireless communication system and communication method - Google Patents

Description

The present disclosure relates to a wireless communication system, and is particularly applicable to a disaster prevention wireless communication system such as a municipal disaster prevention radio broadcast system and a communication method thereof.

In disaster prevention radio communication systems such as municipal disaster prevention radio broadcast systems, one console operated by the user at the city hall or fire department, one base station that outputs radio waves for wireless communication, and the cities under its umbrella. A plurality of relay stations and a plurality of slave stations are provided and configured therein. The slave station is composed of a plurality of outdoor loudspeaker stations and a plurality of receivers such as a door-to-door receiver.

Japanese Unexamined Patent Publication No. 2011-182238 Japanese Unexamined Patent Publication No. 2016-063462

The console is usually housed in a building such as a city hall or fire station that can withstand a large-scale disaster, but it is not always guaranteed that the building such as the city hall or fire station can withstand a large-scale disaster. If the console becomes unusable due to a large-scale disaster, it is possible that the entire disaster prevention radio system will not function even if the outdoor loudspeaker station is safe.

In addition, when it becomes impossible to make a loudspeaker report from the operation console, there is an own station broadcast from an outdoor loudspeaker station as a means for making a loudspeaker report. However, this method can broadcast a loudspeaker report only in the area around the outdoor loudspeaker station.

An object of the present invention is to provide a wireless communication system and a communication method capable of making a loudspeaker report from an outdoor loudspeaker station to the entire city even when the operation console becomes unusable due to a large-scale disaster or the like. It is in.

Other issues and novel features will become apparent from the description and accompanying drawings herein.

The following is a brief overview of the representative ones of this disclosure.

That is, the wireless communication system includes an operation console including a telephone, a base station including a storage device, a relay station, and an outdoor slave station including a speaker and a telephone. When a communication using a special number dial is performed from the telephone of the outdoor slave station to the telephone of the operation console, the voice from the telephone of the outdoor slave station is recorded in the storage device of the base station. .. The voice recorded in the storage device is loudly reported from the speaker of the outdoor slave station.

According to the above wireless communication system, even if the operation console becomes unusable due to a large-scale disaster or the like, it is possible to make a loudspeaker report from the outdoor loudspeaker station to the entire city.

It is a figure for demonstrating the configuration example of the wireless communication system which concerns on Example. It is a block diagram which shows the configuration example of the operation console. It is a block diagram which shows the configuration example of a base station. It is a block diagram which shows the configuration example of a relay station. It is a block diagram which shows the configuration example of an outdoor loudspeaker station. It is a figure which shows the operation sequence of the contact call in the normal time of the wireless communication system which concerns on embodiment. It is a figure which shows the operation sequence of the loudspeaker report at the time of the disaster occurrence of the wireless communication system which concerns on embodiment. It is a figure which shows the operation sequence of the cancellation of a loudspeaker report at the time of a disaster of the wireless communication system which concerns on embodiment. It is a figure which shows the operation sequence of a loudspeaker report at the time of a disaster of the wireless communication system which concerns on a modification.

Hereinafter, examples will be described with reference to the drawings. However, in the following description, the same components may be designated by the same reference numerals and repeated description may be omitted. In addition, in order to clarify the description, the drawings may be schematically represented for each part as compared with the actual embodiment, but they are merely examples and do not limit the interpretation of the present invention.

FIG. 1 is a diagram for explaining a configuration example of a wireless communication system according to an embodiment. The wireless communication system 1 shows a configuration example of a disaster prevention wireless communication system such as a municipal disaster prevention radio broadcast system. The wireless communication system 1 includes a master station facility 10, a relay station facility 20, and a slave station facility 30.

The master station equipment 10 includes an operation console 11 and a base station 12. The operation console 11 is housed in a building such as a city hall or a fire station that can withstand a large-scale disaster, for example. The base station 12 may be, for example, a building that can withstand a large-scale disaster installed in a place different from the building where the operation console 11 is housed, or a station building that can withstand a large-scale disaster such as a mountaintop. It will be paid. In this way, in the event of a large-scale disaster, measures are taken to improve the survival rate of the base station 12. The operation console 11 and the base station 12 are connected by, for example, wired communication using a communication wiring cable CA or the like. The operation console 11 and the base station 12 may be connected by wireless communication such as a wireless LAN.

The operation console 11 transmits various control signals including an activation signal for activating the slave station equipment 30 to the base station 12 as a wireless transmission / reception device, transmission of audio signals such as emergency information by an operator, and the like. conduct.

The base station 12 receives various control signals including an activation signal from the operation console 11 and audio signals such as emergency information, and has a relay facility 20 including a plurality of relay stations 21, a plurality of outdoor loudspeaker stations 31, and a plurality of door-to-door units. Various control signals including activation signals and audio signals such as emergency information are wirelessly transmitted to the slave station equipment 30 such as the receiver 32.

As shown in FIG. 1, the base station 12 includes an antenna AT1 for wireless transmission / reception, and controls signals, voice signals, etc. received from the console 11 are transmitted from the antenna AT1 to the relay station 21 at the base station. Wirelessly transmit to the antenna AT2 for. The relay station 21 wirelessly transmits the radio signal received from the antenna AT2 from the antenna AT3 for slave station communication provided in the relay station 21. The radio signal transmitted from the antenna AT3 of the relay station 21 is received by the antenna AT4 of the outdoor loudspeaker station 31 and the antenna of the door-to-door receiver 32.

Further, communication of various control signals and voice signals from the outdoor loudspeaker station 31 is wirelessly transmitted from the antenna AT4 of the outdoor loudspeaker station 31, and the antenna AT3 of the relay station 21, the antenna AT2 of the relay station 21, and the base station 12 It is received by the console 11 via the antenna AT1 and the communication wiring cable CA.

That is, mutual communication is possible between the antenna AT1 and the antenna AT2, and between the antenna AT3 and the antenna AT4 by wireless transmission / reception.

FIG. 2 is a block diagram showing a configuration example of the operation console 11. FIG. 3 is a block diagram showing a configuration example of the base station 12. FIG. 4 is a block diagram showing a configuration example of the relay station 21. FIG. 5 is a block diagram showing a configuration example of the outdoor loudspeaker station 31.

As shown in FIG. 2, the operation console 11 includes an input / output unit 110, a control unit 111, a communication unit 112 constituting a wired interface unit with the base station 12, and a telephone 113. The operation console 11 is for an operator to manually create distribution information and broadcast or the like. The input / output unit 110 includes input means such as a keyboard for an operator to input, and display output means such as an LCD display. The control unit 111 creates distribution information based on the input information from the input / output unit 110, and for the communication unit 112, the slave station equipment 30 such as a plurality of outdoor loudspeaker stations 31 and a plurality of door-to-door receivers 32. On the other hand, various control signals including an activation signal for activation and an audio signal which is distribution information are transmitted. As a hardware configuration, the control unit 111 includes a CPU (Central Processing Unit) and a memory for storing an operation program of the control unit 111, and the CPU in the control unit 111 operates according to this operation program.

As shown in FIG. 3, the base station 12 includes a control unit 120, a communication unit 121 as a wired interface unit with the operation console 11, a storage device 122, and a radio unit 123 having an antenna AT1. The wireless unit 123 performs wireless transmission / reception with the relay station 21. The control unit 120 controls the entire operation of the base station 12. The control unit 120 also creates distribution information based on the distribution information created by the operation console 11. The control unit 120 includes a CPU (Central Processing Unit) as a hardware configuration, and an operation program or the like of the control unit 120 is stored in the storage device 122. The CPU in the control unit 120 operates according to this operation program. The storage device 122 can adopt a read-only memory ROM, a random access memory RAM, a combination memory of the ROM and the RAM, and the like.

As shown in FIG. 4, the relay station 21 includes a control unit 210, a radio unit 211 having an antenna AT2, a storage device 212, and a radio unit 213 having an antenna AT3. The radio unit 211 is a radio interface unit with the base station 12, and the radio unit 213 is a radio interface unit between a plurality of outdoor loudspeaker stations 31 and slave station equipment 30 such as a plurality of door-to-door receivers 32. The control unit 210 controls the entire operation of the relay station 21. The control unit 210 includes a CPU (Central Processing Unit) as a hardware configuration, and an operation program or the like of the control unit 210 is stored in the storage device 212. The CPU in the control unit 210 operates according to this operation program. As the storage device 212, it is possible to adopt a read-only memory ROM, a random access memory RAM, a combination memory of the ROM and the RAM, and the like.

As shown in FIG. 5, the outdoor loudspeaker station 31 of the slave station equipment 30 includes a control unit 310, a radio unit 311 having an antenna AT4, a loudspeaker unit 312 having a speaker 313, and a telephone 314. There is. The control unit 310 controls the entire operation of the outdoor loudspeaker station 31, and converts the distribution information transmitted from the master station equipment 10 into an audio signal. The wireless unit 311 is a wireless interface unit with the relay station 21 and performs wireless transmission / reception. The loudspeaker unit 312 amplifies (louds) the audio signal output from the control unit 310. The speaker 313 outputs the expanded voice signal as voice. As a hardware configuration, the control unit 310 includes a CPU (Central Processing Unit) and a memory for storing an operation program of the control unit 310, and the CPU in the control unit 310 operates according to this operation program.

A contact call function is provided between the operation console 11 and the outdoor loudspeaker station 31. This contact call function can communicate with the telephone 113 connected to the console 11 by operating the handset of the telephone 314 of the outdoor voice station 31 to make a call. When a contact call is made from the outdoor loudspeaker station 31, radio waves and voice relay the relay station 21 and the base station 12 and reach the telephone 113 of the console 11.

Even when the government building where the console 11 is housed collapses due to a large-scale disaster and broadcasting from the console 11 becomes impossible, the equipment of the base station 12 is safe and the power is supplied to the base station 12. If it is supplied, it is possible to make a call from the telephone 314 of the outdoor loudspeaker station 31 to the telephone 113 of the console 11. At this time, a contact call is made using a special number.

The base station 12 that has received the contact call does not connect the contact call to the telephone 113 of the console 11, and records the voice in the storage device 122 in the base station 12. The outdoor loudspeaker station 31 also carries out a liaison call by operating from the handset of the telephone 314 so as to carry out a loudspeaker report with an upper and lower chime and a siren.

The base station 12 records all the contents of the contact call from the outdoor loudspeaker station 31 in the storage device 122. Then, after a certain period of time has elapsed from the end of the communication call from the outdoor loudspeaker station 31, the base station 12 transfers the content of the voice recorded in the storage device 122 to all the relay stations 21 under the control of the base station 12. Through this, it is automatically distributed to all outdoor loudspeaker stations 31 and door-to-door receivers 32, and loudspeaker notification is started. The base station 12 broadcasts in the same manner as a normal loudspeaker report, and reproduces the recorded voice when the report is in progress. When the playback is completed, if the automatic termination is performed, it is possible to perform an operation as if a loudspeaker was reported from the console 11.

As a result, even if the government building or the like where the operation console 11 is housed collapses due to a large-scale disaster and broadcasting from the operation console 11 becomes impossible, if the base station 12 can be operated, it is under the umbrella. It is possible to make a loudspeaker report to all the outdoor loudspeaker stations 31 and the slave station equipment 30 including the door-to-door receiver 32.

Next, the operation sequence of the wireless communication system 1 will be described. FIG. 6 is a diagram showing an operation sequence of a contact call in normal times of the wireless communication system according to the embodiment. FIG. 7 is a diagram showing an operation sequence of loudspeaker notification when a disaster occurs in the wireless communication system according to the embodiment. FIG. 8 is a diagram showing an operation sequence of canceling a loudspeaker report when a disaster occurs in the wireless communication system according to the embodiment.

(Operation of contact call in normal times)
First, the operation sequence of the contact call in normal times will be described with reference to FIG. The term "normal time" as used herein means a case in which the government building or the like in which the operation console 11 is housed has not collapsed, and it is assumed that the operation console 11 and the telephone 113 are in a usable state. In normal times, the contact call is, for example, a call from the telephone 314 installed in the outdoor loudspeaker station 31 to the telephone 113 installed in the console 11.

As shown in FIG. 6, first, the handset of the telephone 314 installed in the outdoor loudspeaker station 31 is picked up, dialed to the telephone 113 of the console 11, and a contact call is called (601). As a result, the contact call start signal is transmitted (602) to the base station 12 via the relay station 21, and then transmitted (603) from the base station 12 to the console 11. The operation console 11 rings the ringing tone (bell) of the telephone 113 in response to the reception of the contact call start signal (RG ringing: 604). The console 11 also transmits (605) to the base station 12 as a response signal that the telephone 113 is being called based on the reception of the contact call start signal. The base station 12 transmits (606) the received response signal to the telephone 314 of the outdoor loudspeaker station 31 via the relay station 21. As a result, in the handset of the telephone 314, the ringback tone (RBT) that is calling the telephone 113 rings (RBT ring: 607).

When the handset of the telephone 113 of the console 11 is picked up (OFF HK: 608), the console 11 transmits a connection signal to the base station 12 (609). The connection signal is transmitted (610) from the base station 12 to the telephone 314 via the relay station 21. As a result, in the handset of the telephone 314, the ringing back tone is stopped (611), the telephone 314 and the telephone 113 are in a line connection state, and a contact call is possible. Then, a voice call is made between the telephone 314 and the telephone 113 (612).

When the handset of the telephone 314 is returned (placed) (ON HK: 613), the voice call between the telephone 314 and the telephone 113 ends, and the line connection between the telephone 314 and the telephone 113 is disconnected. .. The disconnection signal is transmitted from the telephone 314 to the base station 12 via the relay station 21 (614), and then transmitted from the base station 12 to the console 11 (615). As a result, the telephone 113 rings (616) a busy tone (BT) indicating that the telephone is in the end-of-call state.

(Operation sequence of loudspeaker notification in the event of a disaster)
Next, the operation sequence of the loudspeaker notification when a disaster occurs will be described with reference to FIG. 7. The term "disaster occurrence" as used herein means a case in which the government building or the like in which the operation console 11 is housed has collapsed, and the operation console 11 and the telephone 113 are assumed to be in an unusable state. In FIG. 7, the portion shown by the dotted line (operation console 11, telephone 113) indicates that it cannot be used.

First, the handset of the telephone 314 installed in the outdoor loudspeaker station 31 is picked up, and a contact call (special number) is called (701) by using the special number dial to the telephone 113 of the operation console 11. It is desirable to consider not to press the special dial by mistake for a normal contact call. Also, it is better to specify the target station in the latter half of the dial. As an example of designating the target station in the latter half of the dial, if it is 00000, it can be addressed to the batch, if it is 13000, it can be addressed to the outdoor loudspeaker station 13000, and if it is 80010, it can be addressed to group 10.

The call (701) of the contact call (special number) is transmitted (702) to the base station 12 via the relay station 21 as a contact call start (loud notification special number) signal. Upon receiving the communication call start (loud notification special number) signal, the base station 12 determines whether or not the dial is a special number. If the dial is a special number, the voice is decoded in the same manner as a normal contact call, but it is not connected to the telephone 113 of the console 11.

The base station 12 also transmits to the telephone 314 of the outdoor loudspeaker station 31 via the relay station 21 in response to the fact that the call is being made based on the reception of the communication call start (loudness report special number) signal (the loudspeaker station 31). 703). As a result, in the handset of the telephone 314, the ringing back tone (RBT) being ringed (RBT ringing: 704). The base station 12 transmits (705) a connection signal to the telephone 314 via the relay station 21 based on the determination that the dial is a special number. As a result, in the handset of the telephone 314, the ringing back tone is stopped (706), the telephone 314 and the base station 12 are in a line connection state, and a contact call (special number) is possible. .. Then, a voice call is made between the telephone 314 and the base station 12 (707).

Based on the determination that the dial is a special number, the base station 12 records (708) all the voice calls between the telephone 314 and the base station 12 as voice data in the storage device 122 in the base station 12. ,save. When a contact call (special number) is made with the special number dial, the upper and lower chime instructions and the siren ringing instruction can be given as the menu of the telephone 314 of the outdoor loudspeaker station 31. The upper and lower chime instructions indicate whether or not to sound the chime sound from the speaker 313 of the outdoor loudspeaker station 31 at the beginning of the loudspeaker report and at the end of the loudspeaker report. Further, the instruction for ringing the siren indicates an instruction as to whether or not to sound the siren sound from the speaker 313.

When the recording of the loudspeaker content is completed, the handset of the telephone 314 is returned (ON HK: 709), the voice communication call (special number) between the telephone 314 and the base station 12 is terminated, and the telephone 314 and the base station are terminated. The line connection with 12 is disconnected. The disconnection signal is transmitted (710) from the telephone 314 to the base station 12 via the relay station 21.

The base station 12 has a storage device 122 without a call instruction from the operation console 11 after a certain period of time has elapsed from the disconnection of the line connection between the telephone 314 and the base station 12 (the end of the contact call (special number)). The loudspeaker report of the voice data recorded in is started (711). As a result, the voice data recorded in the storage device 122 is reproduced (712) and distributed to all the outdoor loudspeaker stations 31 under the control of the base station 12 and the slave station equipment 30 including the door-to-door receiver 32 to notify the loudspeaker. Is performed (713). As a result, the content of the voice data recorded in the storage device 122 is reported from the speaker 313 of the outdoor loudspeaker station 31 and the speaker of the door-to-door receiver 32. When the loudspeaker notification is completed, the base station 12 gives an instruction to end the call to all the outdoor loudspeaker stations 31 under the control of the base station 12 and the slave station equipment 30 including the door-to-door receiver 32 (714).

Here, the number of slots in the wireless section is 6 slots in total (slots 0 to 5), of which 4 slots are assigned for voice. When performing a loudspeaker report, the audio data recorded in the storage device 122 in the base station 12 is used as a slave station by using all four slots (four slots 1, 2, 4, and 5) which are considered to be downlink audio channels. Send to (31, 32). On the other hand, when the audio of the telephone 314 of the slave station 31 is recorded in the storage device 122 of the base station 12, the audio is transmitted from the slave station 31 to the base station using one slot (one slot of the slot 4) which is regarded as an uplink audio channel. It is transmitted to 12. Therefore, since the method of using the slot 4 is different between the time of recording and the time of loudspeaker notification, recording and loudspeaker notification cannot be performed at the same time. Therefore, it is preferable to record the entire voice call (broadcast content) in the storage device 122 of the base station 12 once, and then make a loudspeaker report.

(Operation to cancel loudspeaker in the event of a disaster)
The loudspeaker notification start (711) is called after a certain period of time has elapsed from the end of the contact call (special number) (710), assuming that the recording of the loudspeaker notification content to the storage device 122 fails. This is because it is necessary to have a grace period to cancel the start of the report. If you want to cancel the broadcast of the loudspeaker, such as when recording fails, dial to make a contact call (cancellation special number) with another special number dial. As a result, it is possible to cancel the loudspeaker report of the voice data recorded in the storage device 122 immediately before.

The operation sequence of canceling the loudspeaker report in the event of a disaster will be described with reference to FIG. Note that, in FIG. 8, the description of the part (701-710) similar to the sequence shown in FIG. 7 will be omitted.

The voice data recorded in the storage device 122 before a certain time has elapsed (within a certain time) after the disconnection signal is transmitted (710) from the telephone 314 to the base station 12 via the relay station 21. If there is a change, correction, or addition to the content, dial the base station 12 from the telephone 314 to make a contact call (cancellation special number) using the special number dial (801). As a result, the contact call start (cancellation special number) signal is transmitted to the base station 12 via the relay station 21 (802).

The contact call start (cancellation special number) signal is an instruction to stop the calling operation of the loudspeaker notification start (711 in FIG. 7). The base station 12 determines whether or not the dial is a contact call start (cancellation special number), and if it is a contact call start (cancellation special number), the base station 12 cancels the calling operation for starting a loudspeaker call. The base station 12 also transmits a response signal for receiving the contact call start (cancellation special number) signal to the telephone 314 (803). As a result, in the handset of the telephone 314, the ringing back tone (RBT) being ringed (RBT ringing: 804). The base station 12 then transmits (805) the connection signal to the telephone 314 via the relay station 21. As a result, in the handset of the telephone 314, the ringing back tone is stopped (RBT stop: 806), and the line connection state is established between the telephone 314 and the base station 12. As a result, the telephone 314 is notified of the cancellation of the calling operation for starting the loudspeaker report.

When the start of the contact call (cancellation special number) is completed, the handset of the telephone 314 is returned (ON HK: 807), the communication call (cancellation special number) between the telephone 314 and the base station 12 is terminated, and the telephone 314 and the base station are terminated. The line connection with 12 is disconnected. The disconnection signal is transmitted (808) from the telephone 314 to the base station 12 via the relay station 21.

As described above, by providing a contact call start (cancellation special number), the loudspeaker notification of undesired voice data is stopped, and by performing the operation sequence shown in FIG. 7 again, the voice data of the desired content is performed. Can be recorded in the storage device 122. This makes it possible to make a loudspeaker report of the desired content from the slave station equipment 30 (31, 32).

According to the examples, the following one or more effects can be obtained.

(1) In a wireless communication system 1 such as a municipal disaster prevention wireless communication system, even if the operation console 11 becomes inoperable, if the base station 12 is functioning, the place where the outdoor loudspeaker station 31 is located can be found. It can function as the city's disaster prevention command headquarters (base).

(2) Even if the municipal office is damaged by a disaster and the operation console that is the starter of the broadcast becomes unusable, the outdoor loudspeaker station 31 can broadcast a loudspeaker throughout the city. ..

(3) A contact call (special number) is provided as a special number dial. A contact call (special number) is transmitted from the telephone 314 of the outdoor loudspeaker station 31 to the base station 12 using the special number dial. As a result, the voice data of the content of the loudspeaker report is recorded in the storage device 122 of the base station 12, and the recorded voice data is used as the loudspeaker report to all the slave station facilities 30 (31, 32) under the control of the base station 12. Can be sent.

(4) Since the contact call is used, it is possible to make a loudspeaker report from the outdoor loudspeaker station 31 without adding new equipment.

(5) Since the special number dial is used, the operability of the contact call (special number) can be carried out in almost the same operation as the normal contact call.

(6) Since a contact call (cancellation special number) is provided on the special number dial, it is possible to cancel the calling operation for starting the loudspeaker report. When there is a change, correction, or addition to the content of the voice data recorded in the storage device 122, a loudspeaker report is sent from the slave station equipment 30 (31, 32) of the voice data recorded in the storage device 122 immediately before. You can cancel.

(Modification example)
Next, a modification will be described. In the above embodiment, it has been described that all the contents of the contact call from the outdoor loudspeaker station 31 are recorded in the storage device 122 of the base station 12, but the present invention is not limited thereto. It is also possible to record all the contents of the contact call (special number) from the outdoor loudspeaker station 31 in the storage device 212 of the relay station 21.

The operation sequence of the loudspeaker notification when a disaster occurs according to the modified example will be described with reference to FIG. The term "disaster occurrence" as used herein means a case in which the government building or the like in which the operation console 11 is housed has collapsed, and the operation console 11 and the telephone 113 are assumed to be in an unusable state. Further, it is assumed that the base station 12 is also in an unusable state. In FIG. 9, the portion shown by the dotted line (operation console 11, telephone 113, base station 12) indicates that it cannot be used. As shown in FIG. 1, when a plurality of relay stations 21 are provided, it is preferable that each relay station 21 separately performs the loudspeaker notification shown in FIG.

First, the handset of the telephone 314 installed in the outdoor loudspeaker station 31 is picked up, and a contact call (special number) is called (901) by using the special number dial to the telephone 113 of the operation console 11. It is desirable to consider not to press the special dial by mistake for a normal contact call. Also, it is better to specify the target station in the latter half of the dial.

The call (901) of the contact call (special number) is transmitted (902) to the relay station 21 as a contact call start (loud notification special number) signal. The relay station 21 that has received the communication call start (loud notification special number) signal determines whether or not the dial is a special number. If the dial is a special number, the voice is decoded in the same manner as a normal contact call, but it is not connected to the telephone 113 of the console 11.

The relay station 21 also transmits (903) to the telephone 314 of the outdoor loudspeaker station 31 in response to the fact that the call is being made based on the reception of the communication call start (loudness report special number) signal. As a result, in the handset of the telephone 314, the ringing back tone (RBT) being ringed (RBT ringing: 904). The relay station 21 transmits (905) a connection signal to the telephone 314 based on the determination that the dial is a special number. As a result, in the handset of the telephone 314, the ringing back tone is stopped (906), the telephone 314 and the base station 12 are in a line connection state, and a contact call (special number) is possible. .. Then, a voice call is made between the telephone 314 and the relay station 21 (907).

The relay station 21 records (908) all the voice calls between the telephone 314 and the relay station 21 as voice data in the storage device 212 in the relay station 21 based on the determination that the dial is a special number. ,save. When a contact call (special number) is made with the special number dial, the upper and lower chime instructions and the siren ringing instruction can be given as the menu of the telephone 314 of the outdoor loudspeaker station 31. The upper and lower chime instructions indicate whether or not to sound the chime sound from the speaker 313 of the outdoor loudspeaker station 31 at the beginning of the loudspeaker report and at the end of the loudspeaker report. Further, the instruction for ringing the siren indicates an instruction as to whether or not to sound the siren sound from the speaker 313.

When the recording of the loudspeaker content is completed, the handset of the telephone 314 is returned (ON HK: 909), the voice communication call (special number) between the telephone 314 and the relay station 21 is terminated, and the telephone 314 and the base station are terminated. The line connection with 12 is disconnected. The disconnection signal is transmitted (910) from the telephone 314 to the relay station 21.

The relay station 21 has a storage device 212 without a call instruction from the operation console 11 after a certain period of time has elapsed from the disconnection of the line connection between the telephone 314 and the relay station 21 (the end of the contact call (special number)). The loudspeaker report of the voice data recorded in is started (911). As a result, the voice data recorded in the storage device 212 is reproduced (912) and distributed to all the outdoor loudspeaker stations 31 under the control of the relay station 21 and the slave station equipment 30 including the door-to-door receiver 32 to notify the loudspeaker. Is performed (913). As a result, the content of the voice data recorded in the storage device 122 is reported from the speaker 313 of the outdoor loudspeaker station 31 and the speaker of the door-to-door receiver 32. When the loudspeaker notification is completed, the relay station 21 gives an instruction to end the call to the slave station equipment 30 including all the outdoor loudspeaker stations 31 and the door-to-door receiver 32 under the relay station 21 (914).

In this case as well, as described in FIG. 8, calling the loudspeaker notification start (911) after a certain period of time has elapsed from the end of the contact call (special number) (910) is the content of the loudspeaker notification. This is because it is necessary to have a grace period to cancel the start of the loudspeaker report, assuming that the recording to the storage device 212 of the above is unsuccessful. If you want to cancel the broadcast of the loudspeaker, such as when recording fails, dial to make a contact call (cancellation special number) with another special number dial before a certain period of time elapses (within a certain time). As a result, it is possible to cancel the loudspeaker report of the voice data recorded in the storage device 212 immediately before.

According to the modification, even if the operation console 11 and the base station 12 are in an unusable state, the voice data of the loudspeaker notification is recorded and played back in the storage device 212 of the relay station 21 to be under the control of the relay station 21. It is possible to distribute to all the outdoor loudspeaker stations 31 and the slave station equipment 30 including the door-to-door receiver 32.

Although the invention made by the present inventor has been specifically described above based on Examples, it is needless to say that the present invention is not limited to the above-described embodiments and examples and can be variously modified. ..

In the embodiment and the modification, it has been described that the telephone 314 of the outdoor loudspeaker station 31 dials the contact call (special number) from the telephone 113 of the console 11 with the special number dial, but the present invention is not limited to this. Dial the contact call (special number) directly from the telephone 314 of the outdoor loudspeaker station 31 to the base station 12 or the relay station 21, and contact the storage device 122 of the base station 12 or the storage device 212 of the relay station 21. It is also possible to record all of them.

3 and 4 show a configuration in which a telephone is not installed in the base station 12 and the relay station 21, but the present invention is not limited to this. Telephones may be provided at the base station 12 and the relay station 21. In this case, a contact call (special number) is dialed directly from the telephone 314 of the outdoor loudspeaker station 31 to the telephone of the base station 12 or the telephone of the relay station 21, and the storage device 122 of the base station 12 or the storage of the relay station 21 is stored. It is also possible to record the entire contents of the contact call to the device 212.

1: Wireless communication system 11: Operation console 12: Base station 21: Relay station 31: Outdoor loudspeaker station 113, 314: Telephone 122, 212: Storage device 313: Speaker

Claims (3)

With the console
Base stations including storage devices and
With multiple relay stations, including storage devices ,
Equipped with multiple outdoor slave stations, including speakers and telephones,
When a communication call is made from one of the telephones of the plurality of outdoor slave stations to the base station using a special number dial, the voice from the telephone of the outdoor slave station is sent to the storage device of the base station. Is recorded, and the voice recorded in the storage device of the base station is loudly reported from the speakers of the plurality of outdoor slave stations via the plurality of relay stations .
When a contact call is made from one of the telephones of the plurality of outdoor slave stations to the relay station using a special number dial, the outdoor slave station is stored in the storage device of the relay station that received the contact call. The voice from the telephone is recorded, and the voice recorded in the storage device of the relay station is loudly reported from the speaker of the outdoor slave station capable of receiving the signal of the relay station. .. In claim 1,
After a certain period of time has elapsed from the end of the contact call, the voice recorded in the storage device of the base station or the relay station is loudly reported from the speaker of the outdoor slave station.
A wireless communication system that stops a loudspeaker when the base station or the relay station receives a cancellation instruction by a special cancellation number before the lapse of a certain period of time from the end of the communication call. The process of making a contact call from the telephone of the outdoor slave station to the base station or relay station using a special number dial, and
The process of receiving the contact call at the base station or the relay station, and
When the contact call is a contact call to the base station,
A step of recording voice from the telephone of the outdoor slave station in the storage device of the base station based on the reception of the contact call, and a step of recording the voice from the telephone of the outdoor slave station.
A step of transmitting the voice recorded in the storage device from the base station to a plurality of relay stations, and
A step of transmitting the voice received by the plurality of relay stations from the base station to the plurality of outdoor slave stations, and
The process of making a loudspeaker report of the voice received from the relay station from the speaker of the outdoor slave station, and
When the contact call is a contact call to the relay station,
A step of recording voice from the telephone of the outdoor slave station in the storage device of the relay station based on the reception of the contact call, and a step of recording the voice from the telephone of the outdoor slave station.
The process of transmitting the voice recorded in the storage device to the plurality of outdoor slave stations, and
The process of making a loudspeaker report of the voice received from the relay station from the speaker of the outdoor slave station, and
Communication methods for wireless communication systems, including.

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