JP2023018127A - Relay station, relay device, and relay method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow listening only to communications of one's own operator.

SOLUTION: A relay station includes a first relay device to which a wireless terminal of a first operator is normally connected, and other repeaters to which other wireless terminals are normally connected. The first relay device enables output of an audio signal included in an uplink signal received by the first relay device or another relay device from the wireless terminal of the first operator from an audio output unit on the basis of a microphone connection state value obtained by detecting whether a microphone is connected to the first relay device, and a customer request value that is received by a wireless communication unit from the wireless terminal of the first operator that indicates whether or not voice output is possible.

SELECTED DRAWING: Figure 22

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a relay station, a relay device, and a relay method.

A communication system configured by connecting a relay device and a plurality of terminals such as transceivers is known.

For example, Patent Literature 1 discloses a technique of connecting a microphone and a speaker to a relay device and performing communication from the relay device to each transceiver.

JP 2015-146584 A

A relay device used in a communication system is arranged in a relay station shared by a group such as a plurality of operators. In this case, when communicating from the relay device of the relay station, there is a risk that the other operator's call can be intercepted.

The present invention proposes a relay station, a relay device, and a relay method that enable listening only to the communication of one's own carrier when performing communication from the relay device of the relay station shared by a plurality of carriers.

A relay station of the present invention includes a first relay device to which a wireless terminal of a first operator is normally connected, and another relay device to which another wireless terminal is normally connected, and The device includes a wireless communication unit that receives a signal from the wireless terminal of the first business operator, an audio output unit that outputs an audio signal received by the wireless communication unit as audio, and a microphone connected to the first relay device. Based on the microphone connection state value that detects the state of connection or not, and the customer request value received by the wireless communication unit from the wireless terminal of the first business operator that indicates whether or not voice output is possible, the first The relay device or the other relay device is provided with a control unit that enables output of an audio signal included in an uplink signal received from the wireless terminal of the first business operator from the audio output unit.

The relay method of the present invention includes a first relay device to which a wireless terminal of a first business operator normally connects, and another relay device to which another wireless terminal of another business operator normally connects. A relaying method for a relay station, wherein the first relay device receives a signal from the wireless terminal of the first business operator, and determines whether or not a microphone is connected to the first relay device. and the customer request value received from the wireless terminal of the first business operator indicating whether or not voice output is possible, the first relay device or the other relay device detects the first business a step of determining whether or not to output an audio signal included in an uplink signal received from a wireless terminal of the user; and a step of outputting the audio signal as audio when the determination determines that the audio signal can be output; including.

ADVANTAGE OF THE INVENTION According to this invention, when communicating from the relay apparatus of the relay station shared by several operators, it is possible to intercept and receive only the communication of one's own operator.

FIG. 1 is a schematic diagram showing an example of the configuration of a wireless communication system including relay devices according to the first embodiment of the present invention. FIG. 2 is a block diagram showing an example of the configuration of a wireless terminal according to this embodiment. FIG. 3 is a block diagram showing an example of the configuration of the relay device of this embodiment. FIG. 4 is a schematic diagram showing an example of a speaker output control table. FIG. 5 is a schematic diagram for explaining the problem of the conventional technology. FIG. 6 is a schematic diagram for explaining output control of the speaker. FIG. 7 is a schematic diagram for explaining output control of a speaker different from that in FIG. FIG. 8 is a schematic diagram for explaining output control of a speaker different from that in FIGS. 6 and 7. FIG. FIG. 9 is a sequence diagram showing processing for outputting a received sound from a speaker. FIG. 10 is a sequence diagram showing processing for not outputting received audio from a speaker. FIG. 11 is a sequence diagram showing a process of stopping speaker output of received audio. FIG. 12 is a sequence diagram showing a process different from that shown in FIG. 11 for stopping speaker output of received audio. FIG. 13 is a sequence diagram showing processing for always permitting speaker output. FIG. 14 is a sequence diagram showing processing for temporarily prohibiting speaker output of received audio. FIG. 15 is a sequence diagram showing processing for temporarily permitting speaker output of received audio. FIG. 16 is a sequence diagram illustrating an example of processing in which each relay device notifies a wireless terminal of a speaker setting state. FIG. 17 is a flowchart showing an example of the flow of processing when physical connection or disconnection of a microphone is detected. FIG. 18 is a flowchart illustrating an example of the flow of processing when receiving a speaker output setting notification from another relay device. FIG. 19 is a flowchart showing an example of the flow of processing when a speaker output setting change request is received from a wireless terminal. FIG. 20 is a flowchart showing an example of the flow of processing when temporary speaker output settings are received from the wireless terminal. FIG. 21 is a flowchart showing an example of the flow of processing for starting or stopping speaker output. FIG. 22 is a flowchart showing an example of the flow of processing for determining whether speaker output is possible. FIG. 23 is a schematic diagram showing an example of a determination table.

DETAILED DESCRIPTION OF THE INVENTION Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited by this embodiment, and when there are a plurality of embodiments, a combination of each embodiment is also included.
[First Embodiment]
A configuration of a wireless communication system including a relay device according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram showing an example of the configuration of a radio communication system according to the first embodiment of the present invention.

As shown in FIG. 1, the wireless communication system 10 includes a relay station 100, a plurality of wireless terminals 150-1 of operator A, a plurality of wireless terminals 150-2 of operator B, and a plurality of wireless terminals 150-2 of operator C. It includes a wireless terminal 150-3 and a plurality of wireless terminals 150-4 of an operator D. The wireless terminals 150-1 to 150-4 are sometimes collectively referred to as the wireless terminal 150. FIG.

The relay station 100 is composed of a plurality of relay devices. In the example shown in FIG. 1, the relay station 100 includes a first relay device 110-1, a second relay device 110-2, . consists of The first relay device 110-1 to the n-th relay device 110-n are connected to each other via IP (Internet Protocol) and a communication line NW such as a serial line. Note that the number of relay devices constituting a relay station is not particularly limited as long as it is two or more. The first relay device 110-1 to the n-th relay device 110-n are accommodated, for example, in a rack and installed in a state of being stacked in one place. Further, an operator O may reside in the relay station 100 to manage the first relay device 110-1 to the n-th relay device 110-n. The first relay device 110-1 to the n-th relay device 110-n may be collectively referred to as the relay device 110 in some cases.

CHs (channels) having frequency information for transmission and reception with wireless terminals are set in the first relay device 110-1 to the n-th relay device 110-n. In this embodiment, two CHs are set for each of the first relay device 110-1 to the n-th relay device 110-n. For example, in the case of the first relay device 110-1, two CHs, CH1 and CH2, are set. That is, the first relay device 110-1 to the n-th relay device 110-n are relay devices that perform communication by TDMA (Time Division Multiple Access). Note that only one CH may be set for the first relay device 110-1 to the n-th relay device 110-n. In this case, the first relay device 110-1 to the n-th relay device 110-n perform communication using the FDMA (Frequency Division Multiple Access) method.

Each of the first relay device 110-1 to the n-th relay device 110-n incorporates a speaker. The first relay device 110-1 has a speaker 130-1. Second repeater 110-2 has speaker 130-2. The n-th repeater 110-n has a speaker 130-n. Speakers 130-1 to 130-n output audio signals of uplink signals received from wireless terminals as audio.

The first relay device 110-1 to the n-th relay device 110-n also support base operation, and can be connected to an external microphone to transmit voice to the wireless terminal. In the example shown in FIG. 1, a microphone 140 is connected to the second relay device 110-2. The first relay device 110-1 to the n-th relay device 110-n have a function of selecting a time slot (Slot Selection). For example, it is possible to select whether to transmit the voice from the microphone 140 in time slot 1 or time slot 2. FIG. Which of time slot 1 and time slot 2 is to be used for transmission can be selected in advance by a PC (Personal Computer) application.

In this embodiment, wireless terminals of a plurality of operators who are not related to each other can share the relay station 100 . In the example shown in FIG. 1, wireless terminals of operator A, operator B, operator C, and operator D share relay station 100 . In this embodiment, it is assumed that the operators share the relay station 100, but this does not limit the present invention. The present invention can also be applied when a plurality of groups divided by some attribute share the relay station 100 .

In the relay station 100, the setting of the Home CH is changed for each operator to prevent interference between the calls of each operator. For example, each wireless terminal monitors the Home CH set for itself during standby.

In the example shown in FIG. 1, wireless terminal 150-1 of operator A monitors CH1 of first repeater 110-1, and wireless terminal 150-2 of operator B monitors CH2 of first repeater 110-1. Monitor. In this case, the first relay device 110-1 becomes the normal connection destination between the wireless terminals 150-1 and 150-2. The wireless terminal 150-3 of the operator C monitors CH3 of the second repeater 110-2, and the wireless terminal 150-4 of the operator D monitors CH4 of the second repeater 110-2. In this case, the second relay device 110-2 becomes the normal connection destination between the wireless terminals 150-3 and 150-4.

When the wireless terminal starts a voice call, if the Home CH is not being used by another wireless terminal, it preferentially uses the Home CH. A voice call is made using another CH (trunking out).

The configuration of the wireless terminal according to this embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing an example of the configuration of a wireless terminal according to this embodiment.

Wireless terminal 150 includes storage unit 151 , voice input unit 152 , voice output unit 153 , operation unit 154 , display unit 155 , wireless communication unit 156 , and control unit 160 .

Storage unit 151 records various data. The storage unit 151 stores, for example, programs for realizing each unit of the control unit 160 . The control unit 160 expands and executes the programs stored in the storage unit 151 to realize the functions of each unit. The storage unit 151 can be realized by, for example, semiconductor memory elements such as RAM (Random Access Memory), ROM (Read Only Memory), and flash memory, or storage devices such as hard disks, solid state drives, and optical disks. can be done.

Voice input unit 152 accepts various voices. The voice input unit 152 receives voice from the user for transmission to another wireless terminal, for example, and outputs the voice to the control unit 160 as a voice signal. The voice input unit 152 is composed of, for example, a normal microphone.

The audio output unit 153 outputs various sounds. Audio output unit 153 outputs audio corresponding to a signal transmitted from, for example, another wireless terminal. The audio output unit 153 is composed of, for example, a normal speaker.

Operation unit 154 accepts various operations for wireless terminal 150 . Various operations include, for example, operations such as changing various settings of the wireless terminal 150 and switching on/off of voice transmission/reception. The operation unit 154 can be realized by, for example, physical switches or a touch panel provided on the display unit 155 . When the operation portion 154 is operated, a control signal corresponding to the operation is input to the operation control portion 163 .

The display unit 155 displays various information. The display unit 155 displays, for example, various information regarding wireless communication. The display unit 155 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Organic Electro-Luminescence) display.

The wireless communication unit 156 communicates information including voice with another wireless terminal 150 via the relay device 110 of the relay station 100 .

The control unit 200 includes a microphone input control unit 161 , an audio output control unit 162 , an operation control unit 163 , a display control unit 164 and a wireless communication control unit 165 . The control unit 200 can be realized by an electronic circuit including, for example, a CPU (Central Processing Unit) and a DSP (Digital Signal Processor).

Microphone input control section 161 encodes the audio signal detected by audio input section 152 and outputs it to wireless communication control section 165 .

Radio communication control section 165 converts the encoded audio signal into a predetermined communication format, and transmits it to relay apparatus 110 via radio communication section 156 . Further, wireless communication control section 165 decodes the signal relayed by relay device 110 via wireless communication section 156 and outputs the decoded audio signal and control signal to audio output control section 162 .

The audio output control unit 162 controls whether or not to output (mute) the audio signal decoded by the wireless communication control unit 165 via the audio output unit 153 based on the control signal.

The operation control unit 163 receives operation information from the operation unit 154 according to an operation by a user or the like. Operation control unit 163 outputs a control signal for operating each unit of control unit 160 to each unit according to the received operation information.

The display control section 164 displays various images on the display section 155 . The display control unit 164 displays information about wireless communication on the display unit 155, for example.

An example of the configuration of the relay device according to this embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing an example of the configuration of the relay device of this embodiment.

The relay device 110 includes a storage unit 111, a microphone input terminal 112, an audio output unit 113, a wireless communication unit 114, an operation unit 115, a display unit 116, an inter-relay device communication unit 117, and a control unit 200. Prepare.

A microphone terminal is connected to the microphone input terminal 112 as an audio input unit. That is, in the relay device 110, the microphone as the audio output section can be arbitrarily attached and detached. The microphone is attached/detached to/from the microphone input terminal 112 by the operator O, for example.

The audio output unit 113 outputs various sounds. Audio output unit 113 outputs audio corresponding to a signal transmitted from, for example, a wireless terminal. The audio output unit 153 is composed of, for example, a normal speaker. The audio output unit 153 may be provided integrally with the relay device 110, or may be connected from the outside.

Wireless communication unit 114 performs information communication between relay device 110 and an external information processing device. The wireless communication unit 114 performs information communication between the wireless terminal 150 and other wireless terminals.

Operation unit 115 receives various operations for relay device 110 . Various operations include, for example, operations for changing various settings of the relay device 110 . The operation unit 115 can be realized by physical switches or a touch panel provided on the display unit 116, for example. When the operation unit 115 is operated, a control signal corresponding to the operation is input to the operation control unit 250 .

The display unit 116 displays various information. The display unit 116 displays, for example, various information regarding wireless communication. The display unit 116 is a display including, for example, a liquid crystal display or an organic EL display.

Inter-relay device communication section 117 performs information communication between relay device 110 and other relay devices 110 constituting relay station 100 . The relay device 110 and another relay device 110 are connected by a communication line NW. Inter-relay device communication section 117 performs information communication between relay device 110 and other relay devices 110 constituting relay station 100 via communication line NW. The content of information communication is, for example, information for one relay device 110 to change the setting of another relay device 110 . Alternatively, the uplink signal itself from the wireless terminal 150 received by one relay device 110 or a voice signal included in the uplink signal may be used. That is, an uplink signal received by one of the relay devices 110 can be sent to the other relay devices 110 through the communication line NW.

Storage unit 111 records various data. Storage unit 111 stores, for example, a program for realizing each unit of control unit 200 . The control unit 200 expands and executes the programs stored in the storage unit 111 to realize the functions of each unit. The storage unit 111 can be realized by, for example, semiconductor memory devices such as RAM, ROM, and flash memory, or storage devices such as hard disks, solid state drives, and optical disks.

The storage unit 111 stores the speaker output setting state for each Home CH, for example. The storage unit 111 stores, for example, speaker output setting states as a speaker output control table.

A speaker output control table will be described with reference to FIG. FIG. 4 is a schematic diagram showing an example of a speaker output control table. Although described as controlling the output of the speaker, it may be the sound corresponding to the signal received by the repeater, that is, whether or not to decode the sound data. output is muted. In other words, it is the same as controlling the propriety of voice output.

As shown in FIG. 4, the speaker output control table 300 includes information on speaker output settings and state management for each Home CH. State management includes microphone connection, customer request (always), and customer request (temporary). Customer Requests (Always) are the customer's constant requests during the call. A customer request (temporary) is a customer's temporary request during a call.

Possible values of the speaker output setting state are "Enable" and "Disable". "Enable" means that speaker output is to be performed. "Disable" means that speaker output is not performed. The relay device 110 performs speaker output control according to this information.

Possible values of the microphone connection state are "Off" for unconnected and "On" for connected. "Off" means that no microphone is connected. "On" means that the microphone is connected.

The possible values of the customer request (always) are "None", "Enable" and "Disable". "None" means that no customer request has been received. "Enable" means that the customer always permits speaker output. "Disable" means that the customer does not allow speaker output all the time.

Possible values of the customer request (temporary) are "None", "Enable" and "Disable". "None" means that no customer request has been received. "Enable" means that the customer has temporarily permitted speaker output. "Disable" means that the customer has temporarily disabled speaker output.

The control unit 200 includes a microphone attachment/detachment detection unit 210, a microphone input control unit 220, an audio output control unit 230, a wireless communication control unit 240, an operation control unit 250, a display control unit 260, and inter-relay device communication control. and a section 270 . The control unit 200 can be implemented by, for example, an electronic circuit including a CPU.

A microphone attachment/detachment detection unit 210 detects that a microphone is connected to the microphone input terminal 112 . The microphone attachment/detachment detection unit 210 detects that the microphone connected to the microphone input terminal 112 has been removed from the microphone input terminal 112 . Microphone attachment/detachment detection section 210 notifies audio output control section 230 of the connection state of the microphone.

The microphone input control section 220 controls the microphone connected to the microphone input terminal 112 according to the control of the operation control section 163 when the microphone attachment/detachment detection section 210 detects that the microphone is connected. Microphone input control section 220 transmits an audio signal input to the microphone from wireless communication section 114 via wireless communication control section 240 , for example, when an instruction to transmit is given from operation control section 163 .

Audio output control section 230 controls audio output section 113 . The audio output control unit 230 switches ON and OFF of the audio output unit 113, for example. In addition, based on the microphone connection state of the microphone attachment/detachment detection unit 210, the audio output control unit 230 determines whether the relay device 110 itself or another relay device 110 constituting the relay station 100 activates the relay device 110 itself. When an uplink signal is received from a wireless terminal as a normal connection destination, it is possible to output the voice of the received signal. The audio output control unit 230 enables not only the relay device 110 capable of outputting audio but also the control signal enabling other relay devices 110 to output audio, that is, audio corresponding to the received uplink signal. Outputs a control signal to Also, when an uplink signal is received from a wireless terminal that does not normally connect to the relay device 110, the control signal from the other relay device 110 is used to enable the output of the voice of the received signal. There is

Wireless communication control section 240 controls wireless communication section 114 . Wireless communication control section 240 transmits audio to a wireless terminal or the like via wireless communication section 114 . Wireless communication control section 240 receives audio from the wireless terminal via wireless communication section 114 . In a normal case, the wireless communication control unit 240 transmits the signal received by the wireless communication unit 114 through the wireless communication unit 114, that is, controls the relay. Also, when the microphone attachment/detachment detection unit 210 detects connection of the microphone to the microphone input terminal 112, the wireless communication control unit 240 enables voice transmission to a wireless terminal or the like connected to the relay device 110. FIG.

Operation control unit 250 receives operation information from operation unit 115 in response to an operation by a user or the like. The operation control unit 250 outputs a control signal for operating each unit of the control unit 200 according to the received operation information.

Display control unit 260 displays various images on display unit 116 . The display control unit 260 displays information about wireless communication on the display unit 116, for example.

Inter-relay device communication control section 270 controls inter-relay device communication section 117 . The inter-relay device communication control unit 270 performs information communication with another relay device 110 via the inter-relay device communication unit 117 . Inter-relay apparatus communication control section 270, when receiving an uplink from radio terminal 150 having itself as a normal connection destination from audio output control section 230, outputs audio corresponding to the received uplink signal. After receiving the instruction to enable, it transmits to the other relay device 110 via the inter-relay device communication unit 117 . Further, inter-relay device communication control section 270 responds to the uplink signal received to audio output control section 230 when receiving the above instruction from another relay device 110 via inter-relay device communication section 117. Communicate an instruction to enable the audio output of the voice to be played.

In addition, the inter-relay device communication control unit 270 may transmit and receive a voice signal corresponding to the received uplink signal to and from another relay device 110 via the inter-relay device communication unit 117 . Note that the voice signal is encoded and transmitted/received according to a predetermined protocol between the relay devices. That is, when the instruction is given, the other relay device 110 transmits the voice signal of the voice corresponding to the uplink signal from the wireless terminal whose connection destination is the relay device that gave the instruction. 117. Inter-relay apparatus communication control section 270 outputs the audio signal sent from other relay apparatus 110 to audio output section 113 via audio output control section 230 .

Problems of the conventional technology will be described with reference to FIG. FIG. 5 is a schematic diagram for explaining the problem of the conventional technology. In each figure below, an arrow connecting a wireless terminal and a CH means that information communication is being performed between the wireless terminal and the CH.

Conventionally, when a voice signal is received from a wireless terminal in one's own relay device (for example, the first relay device 110-1), it is conscious of which carrier the wireless terminal that is the source of the voice signal belongs to. The audio was output from the speaker 130-1 unconditionally. Specifically, first relay device 110-1 has Slot Selection set to "2", receives an uplink signal from wireless terminal 150-1 of operator A on CH1, and receives an uplink signal from wireless terminal 150-1 of operator A on CH1. It receives an uplink signal from B's wireless terminal 150-2. Here, "1" and "2" are set in Slot Selection. In the case of "1", the CH with the smaller number outputs the received audio, and in the case of "2", the CH with the larger number is output. outputs the voice of the uplink signal received by the CH of Therefore, the audio of the uplink signal from wireless terminal 150-2 of operator B, which is received on CH2, is output from speaker 130-1 of first relay device 110-1. Second relay device 110-2 has Slot Selection set to "1", receives an uplink signal from wireless terminal 150-3 from operator C on CH3, and receives an uplink signal from wireless terminal 150-3 from operator C on CH4. It is receiving an uplink signal from 150-4. Therefore, the voice of the uplink signal from the radio terminal 150-3 of the operator C, which is received on CH3, is output from the speaker 130-2 of the second relay device 110-2. In the conventional technology, in such a situation, if the operator O of the management company exists near the first relay device 110-1, the content of the conversation will be overheard, which poses a security/confidentiality problem. Conversely, in the case of a TDMA system, even if it is desired to listen to the voice from the wireless terminal through the relay device, the first relay device 110-1 of the own company selects the slot opposite to the slot selection preset by the PC application. The audio of the received uplink signal could not be output to the speaker. Conventionally, there is no mechanism for dynamically switching the setting of Slot Selection, so there is a problem that the received voice of only one CH of the relay station 100 can be heard, but the received voice of the other CH cannot be heard.

An overview of the relay method according to the embodiment of the present invention will be described with reference to FIGS. 6, 7, and 8. FIG. FIG. 6 is a schematic diagram for explaining speaker output control when no microphone is connected to any relay device in the relay station. FIG. 7 is a schematic diagram for explaining speaker output control when a microphone is connected to one of the relay devices in the relay station and voice is output from the speaker of each relay device. FIG. 8 is a schematic diagram for explaining speaker output control when a microphone is connected to one of the relay devices in a relay station and voice is collectively output from the relay device to which the microphone is connected.

The example shown in FIG. 6 is control of each speaker assuming that each relay device is not used in base operation. Specifically, in the example shown in FIG. Microphone is not connected. In such a case, in this embodiment, no sound is output from any speaker. Thus, this embodiment solves the problem of security.

The example shown in FIGS. 7 and 8 is control processing for each speaker assuming that the relay device is used in base operation. In this case, the carrier to be called is determined by the relay device to which the microphone is connected and the set value of Slot Selection. Then, only the voice received from the business operator to be called is output to the speaker. In the examples shown in FIGS. 7 and 8, it is assumed that the microphone is connected to the second repeater 110-2 and the operator C whose Home CH is CH3 is the communication target.

FIG. 7 shows a method of outputting audio by each relay device that has received the audio. In the example shown in FIG. 7, the first relay device 110-1 receives the uplink signal of the wireless terminal 150-1 of the operator A on CH1, and receives the uplink signal of the wireless terminal 150-3 of the operator C on CH2. is receiving the first uplink signal of The Slot Selection of the first relay device 110-1 is "2". Second relay device 110-2 receives the second uplink signal of wireless terminal 150-3 of operator C on CH3, and the uplink signal of wireless terminal 150-4 of operator D on CH4. are doing. The Slot Selection of the second relay device 110-2 is "1". In this case, the first voice of the first uplink signal received on CH2 is output from speaker 130-1 of first relay device 110-1. Also, the second voice of the second uplink signal received by CH3 is output from the speaker 130-2 of the second relay device 110-2. That is, in the example shown in FIG. 7, only the voice of operator C, which is the call target of second relay device 110-2, is output from the speaker.

FIG. 8 shows a method of mixing and outputting the voice of the uplink signal received by each relay device from the speaker of the relay device to which the microphone is connected. Specifically, in FIG. 8, the microphone 140 is connected to the second relay device 110-2. In the example shown in FIG. 8, the first relay device 110-1 receives the uplink signal of the wireless terminal 150-1 of the operator A on CH1, and receives the uplink signal of the wireless terminal 150-3 of the operator C on CH2. is receiving the first uplink signal of The Slot Selection of the first relay device 110-1 is "2". Second relay device 110-2 receives the second uplink signal of wireless terminal 150-3 of operator C on CH3, and the uplink signal of wireless terminal 150-4 of operator D on CH4. are doing. The Slot Selection of the second relay device 110-2 is "1". In the example shown in FIG. 8, the first relay device 110-1 transmits the received first uplink signal to the second relay device 110-2 of the relay station 100. In the example shown in FIG. In this case, the second relay device 110-2 mixes the first audio of the first uplink signal and the second audio of the second uplink signal and outputs the mixture from the speaker 130-2. Although FIG. 8 shows the case of mixing the voices of two repeaters, the present invention is not limited to this.

In the present embodiment, when a microphone is connected to any relay device in relay device 110, either processing shown in FIGS. 7 and 8 may be executed.

Next, details of processing of the wireless communication system 10 according to the present embodiment will be described with reference to FIGS. 9 to 16. FIG.

9 to 11 show sequence diagrams for controlling the output of the speaker triggered by the physical connection and disconnection of the microphone to the second relay device 110-2.

FIG. 9 shows processing for outputting the received voice from the business operator whose Home CH is the second relay device 110-2 when the second relay device 110-2 detects the physical connection of the microphone. is a sequence diagram showing.

First, the second relay device 110-2 detects that the microphone has been connected (step S11). Next, the second relay device 110-2 refers to its own Slot Selection set value (step S12). Then, the second relay device 110-2 recognizes whether the Home CH of the provider whose speaker output is to be controlled is CH3 or CH4 (step S13). Here, in step S13, it is assumed that the Home CH of the business is CH3. Therefore, in step S13, the second relay device 110-2 recognizes that the Home CH of the operator is CH3.

Next, the second relay device 110-2 notifies the other relay devices 110 in the relay station 100 that the microphone connection has been turned on for Home CH3 by the speaker output setting notification (step S14).

Next, each of the other relay devices recognizes that the microphone connection has been turned ON on Home CH3 (step S15). After that, in the communication performed by the operator whose Home CH is CH3 via the second relay device 110-2, the voice is output from the speaker 130-2 of the second relay device 110-2.

Next, the wireless terminal 150 of the business operator whose Home CH is CH3 starts a call with the first relay device 110-1 (step S16). Since communication is being performed on CH3 of second repeater 110-2, this wireless terminal 150 indicates that it will use (trunk out) another CH notified from the system to make a voice call.

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal may be output from the speaker (step S17).

In the example shown in FIG. 9, it is determined that speaker output is possible, and first relay device 110-1 outputs sound from speaker 130-1 (step S18). Then, the processing of FIG. 9 ends. When audio is mixed and output, first relay device 110-1 outputs the received uplink signal to second relay device 110-2, and speaker 130 of second relay device 110-2 outputs the received uplink signal to second relay device 110-2. -2 may output the voice of the first relay device 110-1.

Next, with reference to FIG. 10, processing different from that in FIG. 9 will be described. FIG. 10 is a sequence diagram showing the processing when the wireless terminal 150 of the carrier whose Home CH is not CH3 starts a call.

Steps S21 to S25 are the same as steps S11 to S15 shown in FIG. 9, so description thereof will be omitted.

Next, wireless terminal 150, whose normal connection destination is first relay device 110-1, starts a call with first relay device 110-1 (step S26).

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal may be output from the speaker (step S27).

In the example shown in FIG. 10, since the first relay device 110-1 is permitted to output sound from the speaker, it is the operator whose Home CH is CH3. 110-1 does not output sound from speaker 130-1 (step S28). Then, the processing of FIG. 10 ends.

FIG. 11 shows a process of stopping the speaker output of the received voice from the business operator whose Home CH is the second relay device 110-2 when the physical disconnection of the microphone is detected in the second relay device 110-2. is a sequence diagram showing.

First, a call is started from the radio terminal of the business operator to the first relay device 110-1 (step S31). Then, first relay device 110-1 starts outputting the received voice from speaker 130-1 (step S32).

Second relay device 110-2 then detects the physical disconnection of the microphone (step S33). Next, the second relay device 110-2 refers to its own Slot Selection set value (step S34). Then, the second relay device 110-2 recognizes whether the Home CH of the provider whose speaker output is to be controlled is CH3 or CH4 (step S35). Here, in step S35, the second relay device 110-2 recognizes that the Home CH of the operator is CH3.

Next, the second relay device 110-2 notifies the other relay devices 110 in the relay station 100 that the microphone connection has been turned off on Home CH3 by the speaker output setting notification (step S36).

Next, each of the other relay devices recognizes that the microphone connection has been turned off on Home CH3 (step S37).

At the same time as step S37, first relay device 110-1 stops outputting the received sound from speaker 130-1 (step S38). Then, the process of FIG. 11 ends.

Next, the process of controlling the speaker output triggered by the operation from the wireless terminal will be described with reference to FIGS. 12 to 15. FIG. In this case as well, it is described as controlling the output of the speaker, but it may be whether or not to decode the audio data of the signal received by the relay device.

Processing for always setting the output of the speaker will be described with reference to FIGS. 12 and 13. FIG.

Processing for always prohibiting speaker output will be described with reference to FIG. 12 . FIG. 12 is a sequence diagram showing a process in which the radio terminal of the carrier whose Home CH is CH3 always prohibits speaker output of the voice received from the own carrier through the relay device.

First, the wireless terminal sets Home CH information and "speaker output prohibited" in a speaker output setting change request, and transmits the request to the first relay device 110-1 (step S41).

Next, the first relay device 110-1 excludes the sound received on Home CH3 from the speaker output target (Disable) (step S42). In other words, the first relay device 110-1 prohibits the output of the voice received on Home CH3 from the speaker. Next, the first relay device 110-1 notifies the other relay devices 110 in the relay station 100 that the sound received on Home CH3 has been removed from the speaker output target by the speaker output setting change request ( step S43).

Next, each relay device 110 recognizes that the received sound on Home CH3 is excluded from speaker output targets (step S44).

Next, a call is started from the radio terminal of the carrier whose Home CH is CH3 to the first relay device 110-1 (step S45).

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal may be output from the speaker (step S46).

In the example shown in FIG. 12, it is determined that speaker output is not possible, and first relay device 110-1 does not output sound from speaker 130-1 (step S47). Then, the processing of FIG. 12 ends.

Next, referring to FIG. 13, processing for always permitting speaker output will be described. FIG. 13 is a sequence diagram showing a process in which the wireless terminal of a business operator whose Home CH is CH3 permits the speaker output of the voice received from the own business operator through the relay device.

First, the wireless terminal sets Home CH information and "speaker output permission" in a speaker output setting change request, and transmits the request to the first relay device 110-1 (step S51).

Next, the first relay device 110-1 recognizes that speaker output of the received voice on Home CH3 is permitted (Enable) (step S52). Next, the first relay device 110-1 notifies the other relay devices 110 in the relay station 100 that speaker output of the voice received on Home CH3 is permitted by the speaker output change request (step S53). ).

Next, each relay device recognizes that speaker output of the received voice on Home CH3 is permitted (step S54).

Next, a call is started from the wireless terminal of the carrier whose Home CH is CH3 to the first relay device 110-1 (step S55).

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal may be output from the speaker (step S56). Of course, if it is an uplink signal from the wireless terminal 150 of another carrier, it is rejected.

In the example shown in FIG. 13, speaker output is determined to be possible, and first relay device 110-1 outputs sound from speaker 130-1 (step S57).

Also, as shown in FIG. 13, when the second relay device 110-2 starts a call with another wireless terminal 150 (step S58), it determines whether voice output is possible (step S59). If the terminal 150 is the same operator as the wireless terminal 150 that started the call in step S55, the voice is output from the speaker. is not output. Then, the processing of FIG. 13 ends.

Next, processing for temporarily setting the speaker output (temporary setting) will be described with reference to FIGS. 14 and 15. FIG. In FIGS. 14 and 15, speaker output control is performed only for a call requesting a call.

FIG. 14 is a sequence diagram showing the process of prohibiting the speaker output of the received voice of the carrier's wireless terminal whose Home CH is CH3 only for the call in the link procedure at the start of the call.

First, the wireless terminal sets Home CH information and "prohibition of speaker output" in a call request (Call Request), and transmits the Call Request to the first relay device 110-1 (step S61).

Next, the first relay device 110-1 temporarily removes the received voice of the provider whose Home CH is CH3 from the speaker output target (Disable) (step S62). That is, the first relay device 110-1 temporarily prohibits the Home CH from outputting the received voice of the CH3 operator from the speaker 130-1. 14, first relay device 110-1 does not transmit a speaker output setting change request to other relay devices 110 in relay station 100. In the processing of FIG.

Next, the first relay device 110-1 transmits a call request permission response to the wireless terminal (step S63). As a result, a link is established between the wireless terminal and the first relay device.

Next, a call is started from the wireless terminal of the business operator to the first relay device 110-1 (step S64).

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal can be output from the speaker (step S65).

In the example shown in FIG. 14, it is determined that speaker output is not possible, and first relay device 110-1 does not output sound from speaker 130-1 (step S66).

Next, the call is terminated between the wireless terminal and first relay device 110-1 (step S67). Next, at the timing when the call between the wireless terminal and the first relay device 110-1 ends, the first relay device 110-1 cancels the temporary inhibition of the speaker output of the received voice on the Home CH3. (Step S68). Then, the processing of FIG. 14 ends.

FIG. 15 is a sequence diagram showing a process in which, in the link procedure at the start of a call, the radio terminal of the business operator whose Home CH is CH3 permits its own received voice to be output to the speaker by the relay device only for that call. .

First, the wireless terminal sets Home CH information and "speaker output permission" in a Call Request, and transmits the Call Request to the first relay device 110-1 (step S71).

Next, the first relay device 110-1 temporarily permits speaker output of the received voice on Home CH3 (Enable) (step S72). In the process of FIG. 15, first relay device 110-1 does not transmit the speaker output setting notification to other relay devices 110 in relay station 100. In the processing of FIG.

Next, the first relay device 110-1 transmits a call request acceptance response to the wireless terminal (step S73). As a result, a link is established between the wireless terminal and the first relay device.

Next, a call is started from the radio terminal of the business operator to the first relay device 110-1 (step S74).

Next, the first relay device 110-1 determines whether or not the audio of the received uplink signal may be output from the speaker (step S75).

In the example shown in FIG. 15, it is determined that speaker output is possible, and first relay device 110-1 outputs sound from speaker 130-1 (step S76).

Next, the call is terminated between the wireless terminal and first relay device 110-1 (step S77). Next, at the timing when the call between the wireless terminal and the first relay device 110-1 ends, the first relay device 110-1 cancels the temporary permission for speaker output of the received voice on Home CH3. (Step S78). Then, the processing of FIG. 15 ends.

A process in which each relay device constituting relay station 100 notifies the wireless terminal of the setting state of the speaker will be described with reference to FIG. 16 . FIG. 16 is a sequence diagram illustrating an example of processing in which each relay device notifies a wireless terminal of a speaker setting state.

First, the first relay device 110-1 transmits the speaker output setting states of Home CH1 and 2 recognized by the first relay device 110-1 as speaker setting states to the wireless terminal (step S81). Next, the second relay device 110-2 transmits the speaker output setting states of Home CH3 and 4 recognized by the second relay device 110-2 to the wireless terminal as speaker setting states (step S82). Then, the n-th relay device 110-n transmits the speaker output setting states of the Home CHs 2n-1 and 2n recognized by the n-th relay device 110-n to the wireless terminal as speaker setting states (step S83). .

In the example shown in FIG. 16, each relay device periodically notifies the speaker setting state in a cycle of T seconds. For example, after T seconds in step S81, the first relay device 110-1 transmits the speaker output setting state of Home CH1 and 2 recognized by the first relay device 110-1 to the wireless terminal as the speaker setting state. (step S84). Next, the second relay device 110-2 transmits the speaker output setting states of Home CH3 and 4 recognized by the second relay device 110-2 as speaker setting states to the wireless terminal (step S85). Then, the n-th relay device 110-n transmits the speaker output setting states of the Home CHs 2n-1 and 2n recognized by the n-th relay device 110-n to the wireless terminal as speaker setting states (step S86). .

The wireless terminal can refer to the information notified from each relay device, and can change the setting by user operation when the user desires to change the setting.

Next, using FIGS. 17 to 21, the details of the processing of the relay device in the sequence diagrams described above will be described.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. 17 . FIG. 17 is a flowchart showing an example of the flow of processing when the control unit 200 detects physical connection or disconnection of the microphone.

First, the control unit 200 acquires the setting value of Slot Selection from the storage unit 111 (step S101). Next, the control unit 200 recognizes the Home CH to be controlled for the speaker output accompanying detection of the attachment/detachment of the microphone (step S102).

Next, the control unit 200 determines the connection state of the microphone to its own relay device (step S103). If it is determined that the microphone is not connected (No in step S103), the control unit 200 proceeds to step S106. On the other hand, if it is determined that the microphone is connected (Yes in step S103), the control unit 200 proceeds to step S104.

At step S104, the control unit 200 detects that the microphone is connected (step S104), and proceeds to step S105. The control unit 200 sets the connection state of the microphone to ON (step S105). Then, the controller 200 proceeds to step S108.

At step S106, the control unit 200 detects that the microphone is not connected (step S106), and proceeds to step S107. The control unit 200 sets the connection state of the microphone to OFF (step S107). Then, the controller 200 proceeds to step S108.

Next, the control unit 200 transmits a speaker output setting notification to the other relay device 110 (step S108). The information to be set includes the target Home CH, "microphone connection" as a factor, and the state of the microphone connection.

Next, the control unit 200 determines whether or not an audio signal from the Home CH operator is being received (step S109). If it is not determined that the audio signal is being received (No in step S109), the control unit 200 proceeds to step S111. On the other hand, if it is determined that the data is being received (Yes in step S109), the control unit 200 proceeds to step S110.

When the current speaker output state and the speaker output state after reflecting the notified information are different, the control unit 200 controls the speaker so as to achieve the speaker output state after reflecting the notified information. Output start processing or output stop processing is performed (step S110). Then, the controller 200 proceeds to step S111.

The control unit 200 detects whether the connection state of the microphone has changed (step S111). A change in the connection state of the microphone means that the microphone is removed from the connected state, or that the microphone is connected from the unconnected state. If the connection state of the microphone has not changed (No in step S111), the process returns to step S109 to maintain the current speaker output setting notification state and continue waiting for a received signal. If the connection state of the microphone has changed (Yes in step S111), the process returns to step S103 and the above-described processing is executed.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. FIG. 18 is a flow chart showing an example of the flow of processing when control unit 200 receives a speaker output setting notification from another relay device 110 .

First, the control unit 200 determines whether or not a speaker output setting notification has been received from another relay device 110 (step S201). When not determining that the speaker output setting notification has been received (No in step S201), the control unit 200 repeats the process of step S201. On the other hand, when the control unit 200 determines that the speaker output setting notification has been received from another relay device 110 (Yes in step S201), the control unit 200 proceeds to step S202.

Next, the control unit 200 determines whether or not the cause of the transmission of the speaker output setting notification is the connection of the microphone (step S203). If it is determined that the cause is microphone connection (Yes in step S202), the control unit 200 proceeds to step S203. On the other hand, if it is determined that the cause is not microphone connection (No in step S202), the control unit 200 proceeds to step S204. A case where the factor is not the microphone connection is, for example, a customer's request. In the following explanation, if the factor is not the microphone connection, it is the customer's request.

In step S203, the control unit 200 compares the microphone connection state set in the speaker output setting notification with the microphone connection state in the speaker output control table, and determines whether or not there is a change in the state (step S203). ). When it is determined that there is no change in the state (No in step S203), the control unit 200 proceeds to step S201 and repeats the above-described processing. On the other hand, if it is determined that there is a change in the state (Yes in step S203), the control unit 200 proceeds to step S205 and updates the microphone connection state to the notified state (step S205).

In step S204, the control unit 200 compares the state of the customer request set in the speaker output setting notification with the state of the customer request in the speaker output control table, and determines whether or not there is a change in the state (step S204). ). When it is determined that there is no change in the state (No in step S204), the control unit 200 proceeds to step S201 and repeats the above-described processing. On the other hand, if it is determined that the state has changed (Yes in step S204), the control unit 200 proceeds to step S205 and updates the state of the customer request to the notified state (step S206).

Steps S207 and S208 are the same as steps S109 and S110 shown in FIG. 17, so description thereof will be omitted.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. FIG. 19 is a flowchart showing an example of the flow of processing when the control unit 200 receives a speaker output setting change request from a wireless terminal.

First, the control unit 200 determines whether or not a speaker output setting change request has been received from the wireless terminal (step S301). When it is determined that the speaker output setting change request has not been received (No in step S301), the control unit 200 repeats the process of step S301. On the other hand, when the speaker output setting change request is received (Yes in step S301), the control unit 200 proceeds to step S302.

Next, the control unit 200 compares the "state of customer request" set in the speaker output setting change request with the "state of customer request" in the speaker output control table, and determines whether or not there is a change in the state. (Step S302). When it is determined that there is no change in the state (No in step S302), the control unit 200 proceeds to step S301 and executes the above-described processing. When it is determined that the state changes (Yes in step S302), the control unit 200 proceeds to step S303 and updates the notified state of the customer request of the target CH to the notified state (step S303).

Next, the control unit 200 transmits a speaker output setting change request to the other relay device 110 (step S304). Here, the speaker output setting change request includes the target Home CH, "customer request" as a factor, and information about the state of the customer request. Then, the control unit 200 proceeds to step S301 and executes the above-described processing.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. FIG. 20 is a flowchart showing an example of the flow of processing when the control unit 200 receives temporary speaker output settings from the wireless terminal. The process of FIG. 20 enables the speaker output control for the call during the procedure for establishing a link with the relay device in normal calling operation from the wireless terminal. The wireless terminal sets its own Home CH information and speaker output permission/prohibition information in the Call Request.

First, the control unit 200 sets the voice reception state to "unreceived" before a call from the wireless terminal is started (step S401).

Next, the control unit 200 determines whether or not the voice reception state is "unreceived" (step S402). If it is determined that the voice reception state is "unreceived" (Yes in step S402), the control unit 200 proceeds to step S403. on the other hand. If it is determined that the voice reception state is not "not received" (No in step S402), the control unit 200 proceeds to step S408.

At step S403, the control unit 200 determines whether or not a Call Request has been received from the wireless terminal (step S403). If it is determined that the Call Request has not been received (No in step S403), the control unit 200 repeats the process of step S403. On the other hand, if it is determined that a Call Request has been received (Yes in step S403), the control unit 200 proceeds to step S404.

Next, the control unit 200 saves the Home CH information included in the Call Request in the storage unit 111 (step S404). Here, the control unit 200 saves the Home CH information in the speaker output control table.

Next, the control unit 200 updates the state of the customer request for Home CH in the speaker output control table to the notified state (step S405).

Next, the control unit 200 returns a Call Response to the wireless terminal (step S406).

Next, the control unit 200 updates the voice reception state to "waiting for start of reception" (step S407). Then, the control unit 200 proceeds to step S402.

In step S408, it is determined whether or not the voice reception state is "waiting for start of reception" (step S408). If it is determined that the voice reception state is "waiting for start of reception" (Yes in step S408), the control unit 200 proceeds to step S409. On the other hand, if it is determined that the voice reception state is not "waiting for start of reception" (No in step S408), the control unit 200 proceeds to step S414. In the following description, it is assumed that the voice state is "receiving" when it is determined not to be "waiting for start of reception" in step S408.

At step S409, the control unit 200 determines whether or not an audio frame has been received (step S409). If it is determined that no audio frame has been received (No in step S409), the control unit 200 repeats the process of step S409. On the other hand, if it is determined that an audio frame has been received (Yes in step S409), the control unit 200 proceeds to step S410.

Next, the control unit 200 acquires the Home CH information stored in the storage unit 111 (step S410).

Next, the control unit 200 determines whether or not to output the Home CH sound acquired in step S410 through the speaker (step S411). If it is determined not to perform speaker output (No in step S411), the control unit 200 proceeds to step S413. On the other hand, if it is determined to perform speaker output (Yes in step S411), the control unit 200 proceeds to step S412 and starts speaker output (step S412).

Next, the control unit 200 updates the voice reception state to "receiving" (step S413). Then, the control unit 200 proceeds to step S402.

At step S414, the control unit 200 determines whether or not the end of the voice frame has been detected (step S414). If it is determined that the end of the audio frame has not been detected (No in step S414), the control unit 200 repeats the process of step S414. On the other hand, if it is determined that the end of the audio frame has been detected (Yes in step S414), the control unit 200 proceeds to step S415.

Next, the control unit 200 acquires information of the Home CH stored in the storage unit 111 (step S415).

Next, the control unit 200 initializes the status of the Home CH customer request acquired in step S415 to "None" (step S416).

Next, the control unit 200 stops speaker output (step S417). Next, the control unit 200 initializes the Home CH information stored in the storage unit 111 .

Next, the control unit 200 updates the audio reception status to "unreceived" (step S419). Then, the control unit 200 proceeds to step S402.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. FIG. 21 is a flowchart showing an example of the flow of processing for starting or stopping speaker output by the control unit 200 .

First, the control unit 200 determines whether or not its own relay device is receiving a voice signal from the target Home CH radio terminal (step S501). If it is determined that no audio signal has been received (No in step S501), the control unit 200 terminates the processing of FIG. On the other hand, when the control unit 200 determines that an audio signal is being received (Yes in step S501), the control unit 200 proceeds to step S502.

Next, the control unit 200 determines whether or not to perform speaker output (step S502). If it is determined to output through the speaker (Yes in step S502), the control unit 200 proceeds to step S503. On the other hand, if it is determined not to perform speaker output (No in step S502), the control unit 200 proceeds to step S505.

At step S503, the control unit 200 determines whether the current speaker state is Close (step S503). If it is determined that the speaker state is Closed (Yes in step S503), the control unit 200 proceeds to step S504 and starts speaker output (step S504). Then, the control unit 200 ends the processing of FIG. 21 . On the other hand, if it is determined that the speaker state is Open (No in step S503), the control unit 200 terminates the processing of FIG.

At step S505, the control unit 200 determines whether the current speaker state is Close (step S505). If it is determined that the speaker state is Open (No in step S505), the control unit 200 proceeds to step S506 and stops speaker output (step S506). Then, the control unit 200 ends the processing of FIG. 21 . On the other hand, if it is determined that the state of the speaker is Closed (Yes in step S505), the control unit 200 terminates the processing of FIG.

Processing of the control unit 200 of the relay device 110 will be described with reference to FIG. FIG. 22 is a flowchart showing an example of the flow of processing by the control unit 200 to determine whether speaker output is possible.

In FIG. 22, it is determined whether speaker output is possible based on the speaker output control table 300 shown in FIG. Specifically, the control unit 200 refers to the speaker output control table 300 and determines whether or not speaker output is possible based on the determination table 400 shown in FIG.

First, the control unit 200 refers to the speaker output control table 300 based on the target Home CH information (step S601).

Next, the control unit 200 determines whether or not the customer status (temporary) is "Enable" (step S602). If it is determined that the customer status (temporary) is "Enable" (Yes in step S602), the control unit 200 proceeds to step S603 and performs speaker output (step S603). Then, the control unit 200 ends the processing of FIG. 22 . On the other hand, if it is determined that the customer status (temporary) is not "Enable" (No in step S602), the control unit 200 proceeds to step S604.

At step S604, the control unit 200 determines whether or not the customer status (temporary) is "Disable" (step S604). If it is determined that the customer status (temporary) is "Disable" (Yes in step S604), the control unit 200 proceeds to step S605 and does not perform speaker output (step S605). Then, the control unit 200 ends the processing of FIG. 22 . If it is determined that the customer status (temporary) is "None" (No in step S604), the control unit 200 proceeds to step S606.

At step S606, the control unit 200 determines whether or not the customer status (always) is "Enable" (step S606). If it is determined that the customer status (always) is "Enable" (Yes in step S606), the control unit 200 proceeds to step S607 and performs speaker output (step S607). Then, the control unit 200 ends the processing of FIG. 22 . On the other hand, if it is determined that the customer status (always) is not "Enable" (No in step S606), the control unit 200 proceeds to step S608.

At step S608, the control unit 200 determines whether or not the customer status (always) is "Disable" (step S608). When it is determined that the customer status (always) is "Disable" (Yes in step S608), the control unit 200 proceeds to step S609 and does not perform speaker output (step S609). Then, the control unit 200 ends the processing of FIG. 22 . On the other hand, when it is determined that the customer status (always) is "None", the control unit 200 proceeds to step S610.

In step S610, control unit 200 determines whether or not the connection state of the microphone is "On" (step S610). ), the control unit 200 advances to step S611 and performs speaker output (step S611). Then, the control unit 200 ends the processing of FIG. 22 . On the other hand, if it is determined that the connection state of the microphone is "Off" (No in step S610), the control unit 200 proceeds to step S612 and does not perform speaker output (step S612). Then, the control unit 200 ends the processing of FIG. 22 .

As described above, in the present embodiment, if no microphone is connected to any of the relay devices that make up the relay station, the voice of the uplink signal from the wireless terminal received by each relay device is not output. As a result, this embodiment can prevent interception of voices of other operators at a relay station shared by a plurality of operators. As a result, this embodiment can improve security in the relay station.

In this embodiment, when a microphone is connected to an arbitrary relay station among the relay devices that make up the relay station, voice is output from a wireless terminal that normally connects to the relay device to which the microphone is connected. can do. Further, in the present embodiment, the relay device to which the microphone is connected transmits information indicating that the microphone is connected to the other relay device, so that the other relay device can also confirm that the microphone is connected. It is possible to output audio from a wireless terminal that normally connects to the relay device. As a result, according to the present embodiment, it is possible to stop the output of voices of wireless terminals other than wireless terminals normally connected to the relay device to which the microphone is connected. As a result, in this embodiment, it is possible to listen to only the communication of one's own business operator, so security can be further improved.

Further, as described above, the relay device of the relay station in the present embodiment not only controls the voice output of the relay device of the normal connection destination by any of the wireless terminals constituting the wireless system, but also controls other relay devices. It is also possible to control audio output when receiving an uplink signal from the same business operator. As a result, according to the present embodiment, it is possible to listen to only the communication of one's own business operator, so that convenience can be further improved.

Although the embodiments of the present invention have been described above, the embodiments are not limited by the contents of these embodiments. In addition, the components described above include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range. Furthermore, the components described above can be combined as appropriate. Furthermore, various omissions, replacements, or modifications of components can be made without departing from the gist of the above-described embodiments.

10 Wireless communication system 100 Relay station 110 Relay device 110-1 First relay device 110-2 Second relay device 110-n n-th relay device 130-1, 130-2, 130-n Speaker 140 Microphone 150, 150-1 , 150-2, 150-3, 150-4 wireless terminal 111, 151 storage unit 112 microphone input terminal 152 voice input unit 113, 153 voice output unit 115, 154 operation unit 116, 155 display unit 117 inter-relay device communication unit 114 , 156 wireless communication unit 160, 200 control unit 161, 220 microphone input control unit 162, 230 audio output control unit 163, 250 operation control unit 164, 260 display control unit 165, 240 wireless communication control unit 210 microphone attachment/detachment detection unit 270 relay Inter-Device Communication Control Unit 300 Speaker Output Control Table 400 Judgment Table

Claims (5)

a first relay device to which the wireless terminal of the first operator normally connects;
Including other relay devices to which other wireless terminals normally connect,
The first relay device is
a wireless communication unit that receives a signal from the wireless terminal of the first business operator;
an audio output unit that outputs an audio signal received by the wireless communication unit as audio;
A microphone connection status value obtained by detecting whether or not a microphone is connected to the first relay device, and a customer request value received by the wireless communication unit from the wireless terminal of the first business operator indicating whether voice output is possible or not. and a control unit that enables output from the audio output unit of the audio signal included in the uplink signal received by the first relay device or the other relay device from the wireless terminal of the first business operator based on prepare
relay station. The communication method between wireless terminals via the relay station is a TDMA (Time Division Multiple Access) method having a plurality of time slots,
The normal connection destination of the wireless terminal of the first operator is a predetermined time slot of the first relay device, and when the microphone is connected to the first relay device,
The control unit enables transmission of audio signals to the wireless terminal of the first operator in the predetermined time slot,
A relay station according to claim 1. the microphone connection state value is either an Off value indicating that the microphone is not connected or an On value indicating that the microphone is connected;
The customer request value is any one of Enable for permitting voice output, Disable for not permitting voice output, and None for not receiving the customer request value;
The control unit
if the customer request value is Enable, allowing voice output regardless of the microphone connection state value;
if the customer request value is Disable, voice output is not permitted regardless of the microphone connection state value;
When the customer request value is None, audio output is permitted if the microphone connection state value is On, and audio output is not permitted if the microphone connection state value is Off.
A relay station according to claim 1 or 2. The control unit receives a first uplink signal from one wireless terminal of the first operator by the first relay device, and receives a first uplink signal from another wireless terminal of the first operator by the other relay device. When an uplink signal is received, the first audio corresponding to the first uplink signal and the second audio corresponding to the second uplink signal are mixed to enable audio output;
A relay station according to any one of claims 1 to 3. A relaying method for a relay station that includes a first relay device to which a wireless terminal of a first operator normally connects and another relay device to which another wireless terminal of another carrier normally connects. hand,
The first relay device is
receiving a signal from said wireless terminal of said first operator;
Based on the microphone connection state value that detects whether or not the microphone is connected to the first relay device and the customer request value received from the wireless terminal of the first business operator that indicates whether voice output is possible, determining whether or not to output an audio signal included in an uplink signal received by the first relay device or the other relay device from the wireless terminal of the first operator;
outputting the audio signal as audio when the determination determines that the audio signal can be output;
relay methods, including;

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