JP4359227B2 - Wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication system, and more particularly to a wireless communication system that can control the output of a loudspeaker used in a slave station device from the master station device.

  In broadcast radio systems such as prefectural disaster prevention radio systems and municipal digital broadcast communication systems, etc., broadcast commands are issued from the master station device to the slave station devices, and the slave station devices record the voices. Reproduction is performed (see, for example, Non-Patent Document 1). Therefore, a case where a telephone is used as a receiver which is a slave station device provided in the broadcast radio system will be described.

  When a broadcast receiver for a broadcast radio system receives a broadcast communication addressed to itself, it rings when the speaker of the receiver receives a command, and the content of the notification is received by the operator taking the receiver of the telephone receiver. The report information is output by voice, and the operator listens to it. In addition, whether or not to record the notification information is determined by the operator's operation. For example, when the type of broadcast communication is emergency batch notification or individual notification, a switch or the like is operated to record. Is. In some cases, the above-described telephone receiver is used as a door-to-door receiver (or also referred to as a slave station device) to construct a broadcast radio system. In such a case, the volume of the slave station device is controlled by detecting the volume information incorporated in the notification message with the amplifier of the speaker of the slave station device and setting it to a predetermined volume. Accordingly, since the volume control of the slave station device operates with the same report message, the volume of the report cannot be changed for each slave station device.

  In the municipal disaster prevention radio system, radio waves from a master station device (or also referred to as a control station) are received by a slave station device, and are amplified by a voice amplifying unit of the slave station device. There is a system that uses loud trumpet speakers to inform local residents of emergency broadcasts.

  Thus, even in the method using the individual receiver described above, there is a demand for changing the loudspeaker volume of each home to be larger or smaller depending on the demand and circumstances from each home. In addition, in the municipal disaster prevention radio system, there is a request that the volume of the trumpet speaker be adjusted according to a request from a nearby resident. For example, in a residential area near a hospital or in a quiet environment, the volume is relatively low, but there is a demand for a relatively high volume in a noisy area. To adjust the volume of the trumpet speaker, It is necessary to climb the pole where the trumpet speaker is attached and change the output setting and ask a professional engineer. In addition, when the output of the audio amplifying unit of the outdoor slave station is adjusted, the volume of all trumpet speakers connected to the outdoor slave station changes. Also, in winter, there is a problem that the broadcast sound cannot be heard if the volume is lowered with the room window closed. Therefore, realization of a wireless communication system capable of adjusting the sound volume suitable for such an environment and various conditions is desired.

"Municipal digital broadcast communication system recommended standard (draft)", Radio Industry Association, March 2003

  The volume of the individual receiver or the outdoor loudspeaker in the conventional municipal disaster prevention radio system is the same in the ringing state regardless of the importance of the report information. However, it is necessary to adjust the volume of the speaker of the individual receiver according to the circumstances of each home, and the volume of the loudspeaker is adjusted outdoors in a residential area where the hospital is near or where the environment is quiet and where there is a lot of noise. A realizable wireless communication system is desired.

  An object of the present invention is made in view of such circumstances, and a radio that enables a slave station device to effectively control a ringing mode of the slave station device according to report information from the master station device. It is to provide a communication system.

  Another object of the present invention is to provide a wireless communication system capable of remotely controlling the volume or sound quality of a slave station device for each slave station device.

  Still another object of the present invention is to provide a wireless communication system capable of changing a set value of volume or sound quality of a slave station device by remote control.

  The present invention provides wireless communication in which a master station device wirelessly transmits report information to a plurality of slave station devices, and the slave station device that has received the command receives and outputs the report information received from the master station device In the system, the slave station device has a ringing unit and a storage unit, stores a table in which a plurality of sound volumes or sound qualities are specified in the storage unit, and stores in the storage unit based on instruction information from the master station device. One of the selected tables is selected, and the ringing unit is configured to ring based on the selected volume or sound quality.

  In the wireless communication system of the present invention, the master station device selects at least one slave station device from the plurality of slave station devices, and is stored in the storage unit of the selected slave station device. It is configured to transmit instruction information for changing the volume or sound quality of the table.

  In the wireless communication system of the present invention, the instruction information from the master station device is added to the notification information and transmitted.

  The present invention also includes a master station apparatus and at least one slave station apparatus, wherein the master station apparatus wirelessly transmits notification information to the slave station apparatus and receives the report information. In the wireless communication system that receives and outputs the notification information received from the master station device, the slave station device includes a plurality of loudspeakers and a control unit that controls the volume of the multiple loudspeakers. The station device includes a control unit, means for selecting at least one of the plurality of loudspeakers, and means for setting the volume or sound quality of the selected loudspeaker, and based on the instruction information from the master station device The volume or sound quality of the selected loudspeaker of the slave station device is set.

  In the wireless communication system of the present invention, the instruction information from the master station device is added to the notification information and transmitted.

  Further, in the wireless communication system of the present invention, the control unit of the master station device has a storage unit, and a table in which a plurality of sound volumes or sound qualities are defined in the storage unit corresponding to each of the plurality of loudspeakers. And generating the instruction information for selecting the loudspeaker and setting the volume or sound quality of the selected loudspeaker based on the table.

  As described above, in the wireless communication system of the present invention, the volume or sound quality of the slave station device can be detected at the volume information incorporated in the report message and set to a predetermined volume or sound quality for each slave station device. In each home or individual building, an easy wireless communication system can be realized. There is also a demand for adjusting the volume or sound quality of a trumpet speaker installed outdoors. For example, in a residential area near a hospital or in a quiet environment, the volume is relatively low, but there is a demand for a relatively large volume in a noisy area. Therefore, it is possible to adjust the volume or sound quality and to realize an environmentally friendly municipal disaster prevention radio system.

  An embodiment according to the present invention will be described with reference to FIG. In this embodiment, the present invention relates to a broadcast radio system for notifying residents of disaster-related information and the like from an administrative organization or the like in a municipal disaster prevention radio system, and a communication device and a communication method of such a radio communication system. The case where is applied is shown. In the present embodiment, the present invention is applied to a municipal digital broadcast communication system. However, the present invention is not limited to this, and it goes without saying that the present invention can be applied to a wireless communication system such as a fixed digital wireless system.

  Note that the wireless communication system may be configured by only a digital wireless system, or may be configured such that both a digital wireless system and an analog wireless system are mixed. Here, the analog wireless system can be configured as a system similar to the digital wireless system.

  FIG. 1 shows, for example, a municipal disaster prevention radio system. This municipal disaster prevention radio system includes a master station device (or control station) 101, a plurality of slave station devices (or terminal devices) 102-1, ... 102-l, 102-m, ... 102-n and at least It is composed of one relay station 103. Note that the slave station device 102 is collectively referred to as a slave station device 102. The master station device 101 includes a command board 104 for performing operations and commands, a control device 105, a master station radio device 106 for transmitting and receiving signals wirelessly, and a transmission / reception antenna 107.

  The slave station apparatus 102 includes an antenna 108 that performs wireless communication with the master station apparatus 101 or the relay station 103, a slave station radio apparatus 109, and a telephone (or loudspeaker) 110. Then, some of the slave station devices 102-m,... 102-n are set to wirelessly communicate with the master station device 101 via the relay station 103, and other slave station devices 102-1, ... 102-1 are set so as to perform wireless communication directly with the master station device 101 without using the relay station 103.

  The relay station 103 has, for example, a two-frame configuration. Specifically, the relay station 103 performs wireless communication between the slave station device 102 and a device that performs wireless communication with the master station device 101 (to the master station device). It is configured by connecting a device to be performed (opposite station device).

  FIG. 2 shows an embodiment of a data format when the master station device 101 and the slave station device 102 perform transmission / reception. Specifically, the data format shown in FIG. 2 includes a burst transient response ramp time “R”, a synchronization word “SW”, a channel type “C”, a traffic channel “TCH”, a high-speed associated channel (call and report information) “ FACCH ”, importance level information“ J ”, guard time“ G ”, and pilot symbol“ P ”are transmitted and received as burst signals. The content of information (data) as a call or notification is transmitted using the high-speed associated channel “FACCH”. The volume variable information “J” used in the present invention is transmitted to the high-speed associated channel “FACCH”. Embedded and transmitted. The numerical values in the figure show an example of the number of symbols.

  FIG. 3 is a block diagram showing a schematic configuration of the slave station apparatus 102 of the present invention. In FIG. 3, reference numeral 301 denotes an input terminal, 302 denotes a control unit, 303 denotes a storage unit, and 304 denotes an individual receiver speaker. Here, the control unit 302 and the storage unit 303 constitute a part of the slave station radio device 109 shown in FIG. 1, and an audio signal and a control signal from the master station device are input to the input terminal 301. In addition, the telephone (or loudspeaker) 110 illustrated in FIG. 1 is a speaker 304 for individual receiver in the present embodiment. The storage unit 303 stores a table for determining the volume shown in Table 1.

  Table 1 shows a table in which groups and corresponding sound volumes are defined. This table is stored in the storage unit 303 in advance. For example, group 1 is defined as volume B (for example, medium volume), group 2 is defined as volume C (for example, relatively low volume), and group n is defined as volume A (relatively high volume). It is a table. For example, a group 2 is assigned to a loudspeaker in a relatively quiet place such as a hospital, and a group n is assigned to a relatively noisy place such as a place with a lot of traffic.

Next, the operation of the present invention will be described with reference to FIG. For example, a message such as emergency information is transmitted from the command board 104 of the master station device 101 to the slave station device 102 via the control device 105, the master station wireless device 107, and the antenna 107, and the slave station device 102 sends the relay station 103 to the relay station 103. Receive this via or directly. That is,
In step 401, the command board 104 refers to the emergency information volume table and selects volume information. That is, the master station device 101 stores, for example, a table in which the volume is determined for each group as shown in Table 1 in a storage device (not shown) of the control device 105. Then, it is displayed on the display unit (not shown) of the command board 104 which volume emergency information is transmitted to which slave station by the operator, whereby the operator can display emergency information of a desired volume. Select. For example, the group 2 in Table 1 is selected for the individual receiver speaker 304 in which the slave station device 102-1 is located in a relatively quiet place such as a hospital.

  In Step 402, when the volume selection information group 2 sent from the command board 104 is received by the control device 105, the control device 105 adds the emergency information and the volume selection information to this, and conforms to the communication shown in FIG. Convert to data format. That is, as described with reference to FIG. 2, an urgent telegram is transmitted using the high-speed associated channel “FACCH”, and the volume selection information group 2 is incorporated into the high-speed associated channel “FACCH” as volume variable information “J”. Transmit to the slave station device 102.

  In step 403, necessary telegrams and volume variable information are extracted from the data format sent from the master station apparatus 101.

  In step 404, the volume variable information extracted in step 403, for example, the volume corresponding to group 2 is referred to the volume table shown in Table 1 stored in the storage unit 303. Read the corresponding volume C.

  In step 405, the individual receiver speaker 304 is controlled based on the read information corresponding to the volume C, and the individual receiver speaker 304 is sounded with sound corresponding to the volume C. The volume control of the individual receiver speaker 304 can be realized by controlling the gain of the amplifier of the audio signal supplied to the individual receiver speaker 304. In this way, since the individual receiver speaker 304 of the slave station device can be sounded at the volume selected by the command board 104 of the master station device 101, the home environment and building where the individual receiver speaker 304 is installed Because the volume can be adjusted according to the surrounding conditions, a municipal disaster prevention radio system that is friendly to the region can be realized. By such an operation, in the case of an emergency call, the volume selection information is added to the message and transmitted, and the slave station device that receives the message can change and output the volume of the sound of the individual receiver speaker. it can. The volume table shown in Table 1 can be various. For example, the volume selection information group can be set for each individual receiver speaker, or can be grouped for each region. Also, the volume to be set can be experimentally measured in advance and set appropriately. Moreover, although Table 1 is a table for sound volume, it goes without saying that the sound quality can be similarly implemented.

  In step 407, emergency information is received, and reply information indicating that the emergency information has been confirmed is transmitted to the master station device 101 (step 408), and this confirmation is displayed on the display device of the master station device 101 (step 409). It is also possible to confirm emergency communication.

  In addition, when performing transmission / reception with the slave station device 102 via the relay station 103, only transmission / reception is performed from the master station device 101 to the slave station device 102 via the relay station 103 in the operation sequence of FIG. The operation sequence is almost the same.

  Next, another embodiment of the present invention will be described. In the embodiment of the present invention described above, the sound volume table shown in Table 1 is stored in the storage unit of the master station device 101 and the slave station device 102, and the slave station device is set to a required volume according to an instruction from the command board 104. The embodiment for setting the volume of the loudspeaker 102 has been described. However, in the embodiment as described above, the volume table stored in the storage device 303 is fixed, so that it is stored in the storage unit of each slave station device 102 in the case of environmental changes or system changes. It is necessary to replace the sound volume table with a new one, and in the municipal disaster prevention radio system having many slave station devices, there is a problem of construction period and cost, and an improved radio communication system is desired. Therefore, in this embodiment, the content of the volume table in the storage unit 303 of the slave station device 102 is rewritten in accordance with an instruction from the command board 104.

  This will be described with reference to FIG. 3 and Table 2. In the present embodiment, the storage unit 303 shown in FIG. 3 is composed of, for example, a rewritable RAM (Random Access Memory), a hard disk, and the like, and the rewritable storage unit 303 stores, for example, a volume table shown in Table 1. Has been. And the case where the content of this volume table is rewritten is demonstrated. First, the command station 104 of the master station device 101 specifies the slave station device 102 whose volume table is to be rewritten and selects the volume to be changed. For example, the slave station device 102-1 is selected, the information for changing the volume B of the group 1 in the volume table of the storage unit 303 of the slave station device 102-1 to the volume A is selected, and the master station device 101 is controlled. Send to part 105. In the same manner as described above, the control unit 105 transmits these pieces of information to the child station apparatus 102 using volume variable information “J” incorporated in the high-speed associated channel “FACCH” of the data format shown in FIG. The control unit 302 of the slave station device 102 decodes the high-speed associated channel “FACCH” and rewrites the group 1 of the volume table stored in the storage device 303 as shown in Table 2.

Table 2 shows the volume table stored in the storage unit 303 shown in FIG. 3, when compared to the volume table shown in Table 1, the volume B of Group 1 is rewritten to the volume A. As described above, since the volume table of the storage unit 303 of the desired slave station device 102 can be rewritten from the command board 104 of the master station device 101, there is a feature that it is possible to immediately respond to changes in the system and changes in the environment.

  Next, still another embodiment of the present invention will be described with reference to FIG. In the above embodiment, for example, the volume adjustment of the individual receiver has been described, but in this embodiment, for example, a trumpet speaker installed outdoors will be described. In FIG. 5, the same components as those in FIG. The command board 104 includes a selection unit 501, a main control unit 502, and a slave station volume setting unit 503. The slave station device 102 includes an outdoor slave station 504, a plurality of loudspeakers (for example, trumpet speakers) 506-1, 506-2,... 506-n and volume switching units 507-1, 507-2, ... 507-n. Note that when the plurality of loudspeakers 506-1, 506-2,... 506-n and the volume switching units 507-1, 507-2,. Part 507. The outdoor-installed slave station 504 corresponds to the slave station apparatus 102 shown in FIG. 1, but particularly shows a slave station installed outdoors. Reference numeral 508 denotes a slave station radio unit, 509 denotes a control unit, 510 denotes an audio amplification unit, and 511 denotes a volume control unit.

  In the wireless communication system configured as described above, for example, in a municipal disaster prevention wireless system, when broadcasting, the control console 104 is operated to transmit a voice signal, data, etc. in a communication format required by the control unit 105, for example, The data format is converted into the data format shown in FIG. 2 and transmitted from the master station radio unit 106 to the slave station apparatus 102 via the antenna 107. In the slave station device 102, the slave station radio unit 508 receives the communication information transmitted from the master station device 101, the control unit 509 decodes the necessary information, and the voice amplification unit 510 sends a plurality of volume switching units 507. To a plurality of loudspeakers 506 and broadcast to local residents.

  Here, the volume control of the plurality of loudspeakers 506 will be described below. First, the loudspeaker ID and the volume are designated by the master station device 101. For example, a table as shown in Table 3 is stored in the storage unit (not shown) of the main control unit of the command board 104.

  Table 3 is a table showing the relationship between the loudspeaker ID (or loudspeaker No.) and the type of volume, and this table is stored in the storage device. And it is comprised so that one of the loudspeakers 506-1, 506-2, ... 506-n can be selected suitably by operating the loudspeaker selection part 501 of the command board 104. FIG. Further, the volume setting unit 503 is configured so that the volume of the loudspeaker selected by the loudspeaker selection unit 501 can be appropriately selected from, for example, the volumes A, B, C. As an example, the loudspeaker selection unit 501 selects the loudspeaker 506-1, and then the volume setting unit 503 selects the volume A, for example. In this way, the volume of the loudspeaker 506-1 is set to the volume A. Similarly, when the loudspeaker 506-2 is selected and the volume B is selected, the loudspeaker 506-2 is set to the volume B. In this way, the sound volume of each loudspeaker is appropriately set by the command board 104, and this setting information is supplied to the control device 105. The control device 105 converts the data to be transmitted into the data format shown in FIG. 2 and transmits it to the slave station device 102. At this time, the volume setting information of each loudspeaker set by the command board 104 is transmitted to the slave station apparatus 102 by volume variable information “J” incorporated in the high-speed associated channel “FACCH” of the data format. This is the same as in the above embodiment.

  In the slave station device 102, when the information from the master station device 101 is received, the control unit 509 decodes necessary information and supplies the loudspeaker ID and the corresponding volume information to the volume control unit 511. The volume control unit 511 includes a storage unit (not shown) having a table similar to the table shown in Table 3, and controls the loudspeaker ID sent from the master station device 101 and the corresponding volume information. Reference is made to a table stored in the storage unit 511, and the volume switching unit 507 is controlled according to the result. For example, since the loudspeaker 506-1 receives the information set to the volume A, the volume control unit 511 controls the volume switching unit 507-1 of the loudspeaker 506-1 to set the volume A. Similarly, the volume switching unit 507-2 of the loudspeaker 506-2 is controlled to set the volume B. In this way, the volume of all volume switching units 507 can be set. If comprised in this way, the volume of the several loudspeaker 506 can be easily changed with a main | base station apparatus, and it becomes possible to set suitably for every loudspeaker 506. FIG.

  With the above configuration, it is not necessary to send an engineer for each slave station to adjust the volume, and the volume of each loudspeaker can be set as appropriate on the master station device. Since it can respond quickly to requests for changes, it has a feature that it can realize a wireless communication system that is friendly to the region. In addition, there is a feature that even when making a report with different urgency for each region, it is possible to report by changing the volume and sound quality for each region.

  Here, the configurations of the wireless communication system, the master station device, the slave station device, the relay station device, and the like according to the present invention are not necessarily limited to those described above, and various configurations may be used.

  Although the present invention has been described in detail above, the present invention is not limited to the wireless communication system described here, and it is needless to say that the present invention can be widely applied to other wireless communication systems. No.

It is a block diagram which shows schematic structure of one Example of this invention. It is a figure which shows an example of the data format used by this invention. It is a block diagram which shows the specific structure of the subunit | mobile_unit apparatus of this invention. It is a figure which shows the operation | movement sequence of this invention. It is a block diagram which shows schematic structure of other one Example of this invention.

Explanation of symbols

  101: Master station device, 102: Slave station device, 103: Relay station, 104: Command board, 105: Control device, 106: Master station radio device, 107, 108: Transmission / reception antenna, 109: Slave station radio device, 110: Telephone: 301: Input terminal 302: Control unit 303: Storage unit 304: Individual receiver speaker 501: Selection unit 502: Main control unit 503: Volume setting unit 504: Outdoor installation slave unit 506 : Loudspeaker, 507: volume switching unit, 508: slave station radio unit, 509: control unit, 510: audio amplification unit, 511: volume control unit.

Claims (3)

The master station device wirelessly transmits notification information to a plurality of slave station devices,
In the wireless communication system in which the slave station device that has received the command receives and outputs the notification information received from the master station device,
The slave station device has a ringing unit and a storage unit,
Stores a table specifying the plurality of volume or sound quality and the corresponding group in the storage unit, selects one of said groups of tables stored in the storage unit based on the instruction information from the master station, Ring the ring based on the volume or quality of the selected group ,
The master station device has a storage unit,
In the storage unit of the master station device, a table specifying a plurality of groups and the corresponding volume or sound quality is stored, and at least one slave station device among the slave station devices is selected from the plurality of groups, and wireless communication system, characterized that you send the instruction information for changing the volume or sound quality of a table stored in the storage unit of the selected slave station apparatus. 2. The wireless communication system according to claim 1, wherein the table of the master station device is grouped by each of the ringing units of the slave station device by the slave station device or by region. . And the parent station, has one child station also reduced, the notification information to said child station apparatus and radio transmission, which said child station from said master station which has received from the master station In a wireless communication system that receives and outputs received notification information,
The slave station device includes a storage unit, a plurality of loudspeakers , and a control unit that controls the volume of the plurality of loudspeakers , and a table in which the group and a plurality of volume or sound quality corresponding to the group are designated in the storage unit. Remember,
The master station device selects a control unit, means for selecting at least one of the groups specifying the corresponding volume or sound quality of the plurality of loudspeakers, and means for setting the volume or sound quality of the selected group of loudspeakers And referring to the table based on the instruction information from the master station device, and setting the volume or sound quality of the selected loudspeaker of the slave station device.

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