JP2021052259A - Call control device and call control method - Google Patents

Abstract

To provide a technique that automatically switches information transmission means by simple processing.SOLUTION: A call control device receives, from a plurality of radio devices, a combination including group ID for identifying a group of each radio device and position information on the radio device. When the call control device receives a group call transmission request in which transmission destination group ID is specified from a first radio device among the radio devices, the call control device selects a loudspeaker if based on distance between position information on a second radio device corresponding to group ID coinciding with the transmission destination group ID among the radio devices and the first radio device, all of the distance is shorter than a predetermined distance among a plurality of transmission means including at least the loudspeaker connected to the first radio device.SELECTED DRAWING: Figure 3

Description

The present invention relates to communication technology, and more particularly to a control device and a control method for controlling voice data communication.

There is long-distance wireless communication as a communication means using a wireless communication terminal device. Further, long-distance wireless communication over a longer distance is possible through a relay device such as a base station device.

In such a technical background, when there are many users who try to transmit information to the other party by using a wireless communication terminal device, if long-distance wireless communication means is always used, even if the communication partner is relatively close to the sender. There is a problem that it becomes difficult for other senders to connect with the other party, such as waiting until the communication is completed, and the burden on the user is heavy even in the situation where the other sender is in the office.

In view of such a problem, in Patent Document 1, a long-range wireless communication means is used for a long-distance partner according to the distance between two communication terminals related to a call, and a short-distance partner is used. There have been proposed techniques for switching to the use of short-range wireless communication means such as "Bluetooth (registered trademark)" and "Wi-Fi" (Wi-Filess Fidelity).

Japanese Unexamined Patent Publication No. 2004-64791

However, even if the short-range wireless communication means is used when the communication partner is in a short distance, if other wireless devices also use the short-range wireless communication means, it becomes difficult to connect with the communication partner. Was still there.

The present invention has been made in view of such a situation, and an object of the present invention is to automatically select an optimum information transmission means according to a situation with a communication partner, thereby frequently using a wireless communication band by the wireless communication means. It is to provide a technology for transmitting information without increasing the burden on the user.

In order to solve the above problem, the terminal device of an embodiment of the present invention receives from a plurality of radios a combination including a group ID for identifying a group of each radio and a position information of the radio. A second receiving unit that receives a group call transmission request for which a destination group ID is specified from the receiving unit and the first radio unit of the plurality of radios, and the plurality of radios. Calculation to calculate the distance between the extraction unit that extracts the position information of the second radio corresponding to the group ID that matches the group ID of the destination, and the position information extracted by the extraction unit and the first radio. A selection unit that selects a transmission means to be used by the first radio when performing the group call based on the unit and the distance calculated by the calculation unit, and a transmission means selected by the selection unit are selected. 1. Provided is a call control device including a transmission unit for transmitting notification information of a transmission means for notifying the radio of 1.

In order to solve the above problem, the terminal device of another aspect of the present invention receives from a plurality of radios a combination including a group ID for identifying a group of each radio and a position information of the radio. A second receiving unit that receives a group call transmission request for which a destination group ID is specified from the receiving unit of the above and the first radio of the plurality of radios, and the plurality of radios. The first extraction unit that extracts the position information of the second radio corresponding to the group ID that matches the group ID of the transmission destination, the information that identifies one or more loudspeakers, and the one or more Calculates the distance between the second extraction unit that extracts the position information indicating the position of the loudspeaker, the position information extracted by the first extraction unit, and one or more position information extracted by the second extraction unit. Based on the calculation unit and the distance calculated by the calculation unit, the selection unit that selects the transmission means to be used by the first radio when performing the group call, and the transmission means selected by the selection unit are selected. Transmission means to notify the first radio The transmission means selected by the selection unit includes a transmission unit for transmitting notification information, and the transmission means selected by the selection unit is the one or a plurality of loudspeakers connected to at least the first radio. Provided is a call control device characterized in that the loudspeaker is selected as the transmission means when all the distances calculated by the calculation unit are shorter than a predetermined distance.

Yet another aspect of the present invention is a call control method. In this method, a step of receiving a combination of a group ID for identifying a group of each radio and a position information of the radio from a plurality of radios and a first radio among the plurality of radios are used. The step of receiving the group call transmission request in which the group ID of the destination is specified, and the position information of the second radio corresponding to the group ID matching the group ID of the destination among the plurality of radios. The first radio when making the group call based on the step of extracting, the step of calculating the distance between the position information extracted by the extraction unit and the first radio, and the distance calculated by the calculation unit. The step includes a step of selecting a transmission means to be used by the machine, and a step of transmitting transmission means notification information for notifying the first radio of the transmission means selected by the selection unit.

It should be noted that any combination of the above components and the conversion of the expression of the present invention between methods, devices, systems, recording media, computer programs and the like are also effective as aspects of the present invention.

According to the present invention, in a situation where information is transmitted to a communication partner using a communication device, it is possible to transmit information by the optimum means according to the distance to the communication partner without increasing the burden of user operation. It becomes.

It is a figure which shows the structure of the communication system which concerns on Embodiment 1. FIG. It is a block diagram of the radio device which concerns on Embodiment 1. FIG. It is a block diagram of the call control device which concerns on Embodiment 1. FIG. It is a figure which shows the group communication (cases 1 and 3) of the communication system which concerns on Embodiment 1. FIG. It is a figure which shows the group communication (case 2) of the communication system which concerns on Embodiment 1. FIG. It is a figure which shows the group communication of the communication system which concerns on Embodiment 2. FIG. 5 is a sequence diagram showing a case where a speaker output is selected as a transmission means in the processing flow of the communication system according to the first to fourth embodiments. FIG. 5 is a sequence diagram showing a case where wireless communication is selected as a transmission means in the processing flow of the communication system according to the first to fourth embodiments. It is a figure which shows the data structure of the table information which is stored in the storage part 2 which concerns on Embodiment 1. FIG. It is a figure which shows the communication between each radio of the communication system which concerns on Embodiment 4 and a call control device. It is a block diagram of the radio device which concerns on Embodiment 4. FIG. It is a figure which shows the data structure of the table information which is stored in the storage part 2 which concerns on Embodiment 4. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary for the sake of clarity of explanation.

(Embodiment 1)
First, the configuration of the wireless system 100a according to the first embodiment will be described. As shown in FIG. 1, the wireless system 100a includes a call control device 20, a radio 10a, a radio 10b, a radio 10c, and a radio 10d. In the present embodiment, when the radio 10a, the radio 10b, the radio 10c, and the radio 10d are collectively referred to, they are simply referred to as the radio 10.

The call control device 20 is a device capable of communicating data such as voice, text, and image, and a control signal for controlling the radio 10 with each of the radios 10, and is, for example, a base station or a repeater. And so on.

The radio 10 is a device capable of transmitting and receiving voice signals, data signals, control signals, and the like to and from each other by a half-duplex communication method via a call control device 20. In the present embodiment, each of the radios 10 is set with a Unit ID (hereinafter referred to as a UID) capable of identifying the own unit. Here, UID = 1 is set for the radio 10a, UID = 2 for the radio 10b, UID = 3 for the radio 10c, and UID = 4 for the radio 10d. Further, the radio 10 can make a group call. The group call is a call that can be made between radios having the same Group ID (hereinafter, also referred to as GID) set in each radio 10. Here, it is assumed that both GID = 1 and GID = 2 are set in the radio 10a, the radio 10b, and the radio 10c, and only GID = 2 is set in the radio 10d. In this way, the radio 10 can start a group call by designating the GID and making a group call transmission request (Group Call).

The internal configuration of the radio 10 will be described with reference to FIG. The radio 10 includes a GPS receiving unit 110, a storage unit 120, a call control unit 130, a wireless communication unit 140, a voice input unit 150, a voice output unit 160, and a PTT detection unit 170.

The GPS receiving unit 110 detects its own position (own position). Here, the means for detecting the own position is a method of receiving a signal from a GPS satellite or the like for positioning, but it is configured by one of well-known position detection technologies such as a method of positioning using information from a plurality of base stations. You may. The GPS receiving unit 110 outputs the acquired position information data to the storage unit 120. The storage unit 120 stores the position information data input from the GPS receiving unit 110 in the position information management unit 121. Further, the storage unit 120 includes an identification information management unit 122 that stores the GID and UID of the own machine.

The PTT detection unit 170 detects whether or not the PTT (Push To Talk) button is pressed, and notifies the call control unit 130 and the wireless communication unit 140 of the detection result.

The call control unit 130 includes a call means selection unit 131. The call means selection unit 131 controls the wireless communication unit 140 so that the radio 10 is in the reception state when the PTT detection unit 170 notifies that the PTT button is not pressed. When the PTT detection unit 170 notifies that the PTT button is pressed, the voice input from the voice input unit 150 is output to either the wireless communication unit 140 or the voice output unit 160. Which one to output is determined according to the call means information acquired from the call control device 20 via the wireless communication unit 140.

The wireless communication unit 140 includes a wireless reception unit 141, a wireless transmission unit 142, and a wireless communication control unit 143. The wireless communication unit 140 receives an audio signal, data such as text and images, and a control signal for controlling the radio 10 via the wireless reception unit 141, and also via the wireless transmission unit 142. Send. Further, the wireless communication unit 140 acquires the position information data indicating its own position, the GID to which the own machine belongs, and the UID that identifies the own machine from the storage unit 120 by the wireless communication control unit 143, and via the wireless transmission unit 142. Is transmitted to the call control device 20.

The voice input unit 150 outputs the voice spoken by the user to the call control unit 130. The voice input unit 150 is, for example, a microphone that collects the voice spoken by the user. The voice output unit 160 converts the voice data input from the call control unit 130 into voice and outputs it. The audio output unit 160 is, for example, a loudspeaker (speaker). The voice data input from the call control unit 130 is, for example, voice data in which the voice collected by the voice input unit 150 is coded, or voice data in which the voice signal received by the wireless communication unit 140 is coded.

That is, the radio 10 has a function of transmitting the sound collected by the voice input unit 150 (microphone) by wireless communication from the wireless communication unit 140 and a function of outputting the sound from the voice output unit 160 (speaker). When the PTT detection unit 170 detects that the PTT button is pressed, one of the functions is selected and output according to the call means information received from the call control device 20. The radio 10 in the present embodiment shall include a speaker as the audio output unit 160.

The wireless system 100a is, for example, a commercial wireless system, but is not limited to this. The wireless system 100a may be a wireless communication system using a public line such as a mobile phone line. The radio device provided with the speaker is not limited to the radio device 10b, and may be another radio device or a plurality of radio devices.

Next, the configuration of the call control device 20 will be described with reference to the block diagram of FIG. The call control device 20 includes a storage unit 2, a communication control unit 3, and a wireless communication unit 4.

The wireless communication unit 4 includes a wireless reception unit 41, a wireless transmission unit 42, and a wireless communication control unit 43. The radio receiving unit 41 receives voice data, control data, position information data, UID, GID, and the like from the radio 10. The radio transmission unit 42 transmits voice data, control data, position information data, and the like to the radio 10. The wireless communication control unit 43 outputs the position information data, GID, and UID received by the wireless reception unit 41 to the storage unit 2. Further, the wireless communication unit 4 periodically receives position information data, GID, and UID from the radios 10a, 10b, 10c, and 10d, associates them with each radio, and outputs them to the storage unit 2.

The storage unit 2 associates the position information data of the radio 10 with the GID and UID for each radio and stores them as table information. When the position information data, GID, and UID of the same radio 10 are input from the wireless communication control unit 43, the table information is updated and stored.

The communication control unit 3 includes a distance calculation unit 32 and a communication means selection unit 33. The distance calculation unit 32 calculates the distance between each of the radio on the transmitting side and the plurality of radios on the receiving side based on the position information data of each of the radios 10 stored in the storage unit 2, and calculates the distance between them. The result is output to the communication means selection unit 33. The location information data may be acquired by the communication control unit 3 when a distance acquisition request is received from the wireless communication unit 4.

The call means selection unit 33 selects a communication means with the radio of the other party to talk to. For example, when the wireless communication unit 4 receives a Group Call call permission request from the radio 10b, the respective distances from the request source radio 10b to all the radios belonging to the group (GID = 1) are set. It is acquired from the table information stored in the storage unit 2. Here, the Group Call call permission request is also referred to as a group call transmission request, and is control data requested to the call control device 20 when the transmitting side radio 10 starts a group call. That is, the radio 10 on the transmitting side is the request source. When all the radios belonging to the group are within a predetermined range (for example, within 10 m) from the requesting radio 10b, the call means selection unit 33 wirelessly picks up the sound collected by the microphone 151 of the radio 10b. The audio data is selected to be output to the audio output unit so as to be reproduced by the speaker 161 of the machine 10b. If even one of the distances to each radio acquired by the communication means selection unit 33 is not within a predetermined range (within 10 m) from the requesting radio 10b, the microphone 151 of the radio 10b is used. Select to output the voice data to the wireless communication unit so that the collected voice is transmitted by long-distance wireless communication.

The communication control unit 3 causes a CPU (Central Processing Unit) or the like to execute a program, so that the position of the radio 10b on the transmitting side stored in the position information management unit 31 of the storage unit 2 and the GID on the receiving side = 1 The position information and UID of each of the plurality of radios 10a, 10c, and 10d belonging to the above group are acquired and output to the distance calculation unit 32, and the distance calculation unit 32 has the transmitting side radio and the receiving side GID = 1. The flow is realized until the distances to each of the plurality of radios belonging to the group are calculated, the calculated distance is output to the call means selection unit 33, and the call means selection unit 33 selects the communication means. You may try to do it.

Subsequently, the processing flow of the wireless system 100a will be specifically described with reference to FIG. 7 by taking the positional relationship between the call control device 20 and each wireless device 10 as shown in FIG. 4 as an example. Here, the uttering side (transmitting side) is referred to as a first radio, and the receiving side (receiving side) is referred to as a second radio. In the present embodiment, the first radio corresponds to the radio 10b, and the second radio corresponds to the radio 10a, the radio 10c, and the radio 10d. Then, the group call is started by making a group call transmission request from the first radio 10b to the radio group composed of the plurality of second radios 10a, 10c and 10d.

(Case 1)
First, when the power is turned on, each radio periodically acquires its own position information data, and the position information data, the UID that identifies the own device, and the GID that specifies the group to which the radio belongs are combined with the call control device 20. (S10a to S10d). A specific example of the position information data is latitude / longitude information.

Next, the call control device 20 stores the position information data, the UID, and the GID received from each radio device 10 by the wireless communication unit 4 in the position information management unit of the storage unit 2 as table information (S20). As shown in FIG. 9, the table information associates the position information data of each radio 10 with the UID and GID.

The radio 10b designates a radio having GID = 1 as a transmission destination group ID. As shown in FIG. 4, the radios belonging to the group of GID = 1 are the radio 10a, the radio 10b, and the radio 10c. The radio 10d does not belong to the group of GID = 1. The radio 10b transmits a group call transmission request with GID = 1 toward the call control device 20 (S30).

When the call control device 20 receives the group call transmission request from the radio 10b by the wireless reception unit 41, the wireless communication control unit 43 sends the communication control unit 3 the table information stored in the storage unit 2 (FIG. 9). From, the position information data of all the radios 10 belonging to GID = 1 is searched, and the position information data and the UID of the radios 10a and 10c are notified to be extracted. The communication control unit 3 calculates the distances from the radio device 10b, which is the request source, to the radio device 10a and the radio device 10c in the distance calculation unit 32, and outputs the distance to the communication means selection unit 33.

The calling means selection unit 33 refers to all the distances input from the distance calculation unit 32, that is, the distance Dba from the requesting radio 10b to the radio 10a, and the distance Dbc from the radio 10b to the radio 10c. A predetermined distance Dth (for example, 10 m) is compared, and the communication means is selected according to the result. In the present embodiment, as a result of comparison, if all the distances are within Dth, "speaker output" is selected as the communication means, and if not, "wireless communication" is selected as the communication means (S40).

When the radios 10 are in the positional relationship as shown in FIG. 4, as a result of comparison with Dth, the communication means selection unit 33 starts with the radios 10b and all the radios 10 belonging to GID = 1, that is, the radios 10a. Since the condition that the distance Dba to and the distance Dbc to the radio 10c is within Dth is satisfied, "speaker output" is selected as the communication means, and the selection result is output to the wireless communication control unit 43 as the communication means information. To do. The wireless communication control unit 43 transmits the “speaker output” response, which is the communication means information, to the wireless device 10b via the wireless transmission unit 52 (S50).

The radio 10b receives a "speaker output" response from the call control device 20 in response to the group call transmission request, and instead of making a group call by long-distance wireless communication to another radio, the sound is collected by the microphone 151. A group call is established by loudening the voice and outputting it from the speaker (S60). Therefore, the other radio does not reproduce the voice by the group call with the radio 10b. Further, when the radio 10b receives the "wireless communication" response from the call control device 20, long-distance wireless communication is executed to the other radio 10 to establish a group call. Since the group call using the long-distance wireless communication may be executed by using a known technique, the description in this example will be omitted.

(Case 2)
On the other hand, among the radios 10 belonging to GID = 1, for example, in a situation where the radio 10c is farther than the predetermined distance Dth from the radio 10b (FIG. 5), the call control device 20 transmits a group call from the radio 10b. The case where the request is received will be described. When the call control device 20 receives the group call transmission request from the radio 10b, the call means selection unit 33 compares a predetermined distance Dth with respect to all the distances input from the distance calculation unit 32. As a result, the distance Dba from the radio 10b to the radio 10a is within the predetermined distance Dth, and the distance Dbc from the radio 10b to the radio 10c is larger than the predetermined distance, so that all the distances are within Dth. Does not meet the condition that there is. Therefore, the communication means selection unit 33 selects "wireless communication" as the communication means, and outputs the selection result to the wireless communication control unit 43 as the communication means information. The wireless communication control unit 43 transmits a “wireless communication” response, which is communication means information, to the radio 10b via the wireless transmission unit 52 (S50).

When the radio 10b receives the "wireless communication" response to the group call transmission request, the radio 10b performs group transmission of GID = 1 to the call control device 20 to establish a group call by long-distance wireless communication. Since the group call using the long-distance wireless communication may be executed by using a known technique, the description in the present embodiment will be omitted.

(Case 3)
Next, a case where the radio 10b starts a group call to the radio belonging to GID = 2 will be described with reference to FIGS. 4 and 8. In this case, as shown in FIG. 4, the radio 10a, the radio 10b, the radio 10c, and the radio 10d belong to GID = 2, and the radio 10d is located at a place more than a predetermined distance from the radio 10b. positioned. Here, the difference from Case 1 will be mainly described.

When the call control device 20 receives a group call transmission request from the wireless device 10b to the wireless device belonging to GID = 2 by the wireless receiving unit 41 of the wireless communication unit 4, the position information extracting unit 31 receives the table information shown in FIG. From, the position information data of all the radios 10 belonging to GID = 2 is searched, and the position information data and the UID of the radios 10a, the radios 10c, and the radios 10d are extracted. The distance calculation unit 32 calculates the distance from the request source radio 10b to the radio 10a, the radio 10c, and the radio 10d based on the extracted position information data, and outputs the distance to the communication means selection unit 33.

The calling means selection unit 33 includes all the distances input from the distance calculation unit 32, that is, the distance Dba from the requesting radio 10b to the radio 10a, the distance Dbc from the radio 10b to the radio 10c, and the radio. The communication means is selected by comparing the distance Dbd from the machine 10b to the radio 10d with a predetermined distance Dth (for example, 10 m) (S40).

When the communication means selection unit 33 detects that Dbd is not located within Dth among Dba, Dbc, and Dbd, it selects long-distance wireless communication as the communication means, and the selection result is the wireless communication of the wireless communication unit 4. It outputs to the control unit 43 and transmits a "wireless communication" response to the radio 10b (S55). The radio 10b executes a group call (S110). That is, when even one of the plurality of second radios belonging to GID = 2 is not within a predetermined range from the requesting radio 10b, the communication means selection unit 33 selects long-distance wireless communication as the communication means. And make a group call.

Further, when the radio 10b starts a group call to the radio belonging to GID = 1, and the distances from the first radio to each of the second radios are all within Dth, that is, the radio 10b If not only the radio belonging to GID = 1 but also the radio belonging to GID = 2 is located within the radius Dth from, the call selection unit 33 selects a long-range radio to establish a group call and groups. Make a call.

In the present embodiment, a case where a group call is made from the radio 10b has been described as an example, but an individual call (Individual Call) from the radio 10b to any one of the other radios 10 has been described. There may be. Further, instead of the speaker included in the radio 10b, a PA (Public Address) device may be connected as an external device, and the speaker included in the PA device may be used. In this case, the position information data of the radio 10b itself was transmitted to the call control device 20, but if the PA device is connected to the radio 10b and is away from the radio 10b, the position of the speaker provided in the PA device can be changed. It may be transmitted as the position information data of the radio 10b. In this case, the position of the radio 10b stored in the storage unit 2 is actually the position of the speaker. Further, the predetermined distance Dth is set according to the reachable distance of the sound output from the speaker.

According to the present embodiment, the user who uses the radio 10b transmits the content spoken to the radio 10 belonging to the designated group ID by a communication means suitable for the distance to each radio. Therefore, it is possible to suppress the difficulty in connecting to the communication partner due to wireless communication more than necessary, and it is possible to switch the communication means without burdening the user.

(Embodiment 2)
The second embodiment will be described. The present embodiment relates to a communication system including a plurality of radios 10 that communicate with each other via a call control device 20, as in the first embodiment. It is the same type as the call control device 20, the radio 10, and FIG. 1 according to the present embodiment, and the same settings are also applied to the GID and the UID. Here, the difference from the first embodiment will be mainly described.

As shown in the configuration of the radio system 100b according to FIG. 6, the radio 10 (radio 10a, radio 10b, radio 10c) belonging to GID = 1 and the radio 10 (radio 10b, radio 10b) belonging to GID = 2. The radio 10d) is located within a radius of a predetermined distance about the position of the radio 10b. In such a situation, a case where the radio 10b starts a group call to the radio 10 belonging to GID = 1 will be described.

When the call control device 20 receives a group call transmission request from the wireless device 10b to the wireless device 10 belonging to GID = 1 by the wireless receiving unit 41, the wireless communication control unit 43 stores the communication control unit 3 with respect to the communication control unit 3. From the table information (FIG. 9) stored in 2, the position information data, UID, and UID of all the radios 10 (radio 10a, radio 10b, radio 10c, radio 10d) managed by the call control device 20 Notify you to extract the GID. The communication control unit 3 calculates the respective distances from the request source radio 10b to the radio 10a, the radio 10c, and the radio 10d in the distance calculation unit 32 based on the extracted position information data. The distance calculation unit 32 outputs each calculated distance to the communication means selection unit 33.

The radio means selection unit 33 compares the distances from all the radios 10 belonging to GID = 1 to the radios 10b among the distances input from the distance calculation unit 32 with the predetermined distance Dth, and GID = 1. The distance from the radio 10 to the radio 10b belonging to the group other than 1 is compared with the predetermined distance Dth. As a result, when the distance from the radio 10b to the radio 10 not belonging to GID = 1 is within Dth, that is, not only the radio belonging to GID = 1 within the radius Dth from the radio 10b, but also GID = 2. If the radio belonging to is also located, the call selection unit 43 selects "wireless communication" as the communication means in order to establish a group call, and executes the group call by long-distance wireless communication.

According to the present embodiment, when making a group call to a predetermined group, the contents of the call can be made without leaking to a user who carries a radio belonging to another group. Depending on the position of the radio that belongs to the predetermined group and the position of the radio that does not belong to the predetermined group, it is possible to make a call without leaking the contents of the call to users other than the predetermined group while using appropriate communication means. it can.

(Embodiment 3)
The third embodiment will be described. The present embodiment also relates to a communication system including a plurality of radios 10 that communicate with each other via a call control device 20 as in the above-described embodiment. Here, the difference from the first embodiment will be mainly described.

The radio in the present embodiment further includes a short-range wireless communication unit 170 for performing short-range wireless communication. The short-range wireless communication is a wireless communication using a communication means typified by, for example, Bluetooth or Wi-Fi, and is performed in a narrower range than the long-distance wireless communication. The radio uses short-range wireless communication to directly communicate with another radio without relaying the call control device 20. Since a known technique is used for the mechanism of short-range wireless communication, detailed description thereof will be omitted. In this embodiment, it is assumed that Bluetooth is used as the short-range wireless communication means.

In the present embodiment, it is assumed that the radio 10 belonging to the group ID of GID = 1 is located within a radius of 100 m from the radio 10b. That is, in the positional relationship between the call control device 20 and each radio 10 as shown in FIG. 4, the place where the radio 10a and the radio 10c are within a radius of 10 m around the radio 10b is replaced with a radius of 100 m or less. Taking the case considered as an example, the processing flow of the wireless system 100a will be specifically described. Here, 100 m is a distance given as an example of the maximum distance that can be communicated by Bluetooth, and is not limited to 100 m as long as it is the maximum distance that can be communicated by Bluetooth. Further, although Dth was adopted as the threshold value of the distance in the first embodiment and the second embodiment, in the present embodiment, a two-step threshold value is provided. That is, the first threshold value Dth1 (for example, 10 m) and the second threshold value Dth2 (for example, 100 m).

As in the first embodiment, the uttering side (transmitting side) is referred to as a first radio, and the receiving side (receiving side) is referred to as a second radio. A group call is started by making a group call transmission request from the first radio 10b to a radio group composed of a plurality of second radios 10a, 10c and 10d.

First, when the power is turned on, each radio periodically acquires its own position information data, and the position information data, the UID that identifies the own device, and the GID that specifies the group to which the radio belongs are combined with the call control device 20. Send to. A specific example of the position information data is latitude / longitude information.

Next, all the radios 10 are paired with each other to enable communication by Bluetooth.

The call control device 20 stores the position information data, UID, and GID received from each radio device 10 by the wireless communication unit 4 in the position information management unit of the storage unit 2 as table information.

The radio 10b designates a radio having GID = 1 as a transmission destination group ID. As shown in FIG. 4, the radios belonging to the group of GID = 1 are the radio 10a, the radio 10b, and the radio 10c. The radio 10d does not belong to the group of GID = 1. The radio 10b transmits a group call transmission request with GID = 1 toward the call control device 20.

When the call control device 20 receives the group call transmission request from the radio 10b by the wireless reception unit 41, the wireless communication control unit 43 informs the communication control unit 3 of the table information stored in the storage unit 2 (not shown). From, the position information data of all the radios 10 belonging to GID = 1 is searched, and the position information data and the UID of the radios 10a and 10c are notified to be extracted. The communication control unit 3 calculates the distances from the radio device 10b, which is the request source, to the radio device 10a and the radio device 10c in the distance calculation unit 32, and outputs the distance to the communication means selection unit 33.

The calling means selection unit 33 refers to all the distances input from the distance calculation unit 32, that is, the distance Dba from the requesting radio 10b to the radio 10a, and the distance Dbc from the radio 10b to the radio 10c. Compare with the first threshold Dth1 and the second threshold Dth2. The communication means is selected according to the result. In the present embodiment, as a result of comparison, if all the distances are within Dth1, "speaker output" is selected as the communication means, and at least one of Dba and Dbc is larger than Dth1, and both are within Dth2. In this case, Bluetooth is selected as the communication means, and if at least one of Dba and Dbc is larger than Dth2, "long-distance radio" is selected.

The call means selection unit 33 outputs the selection result as call means information to the wireless communication control unit 43. The wireless communication control unit 43 transmits the Bluetooth response, which is the communication means information, to the radios 10a, 10b, and 10c via the wireless transmission unit 52.

The radios 10a, 10b, and 10c that have received the Bluetooth response as the communication means information prepare for the communication by preparing for executing the Bluetooth communication as the communication means. Since each radio 10 recognizes that the communication partner is connected by pairing, wireless communication by group call can be immediately executed by Bluetooth communication. Since the group call using Bluetooth may be executed by using a known technique, the description in this example will be omitted.

(Embodiment 4)
Subsequently, the fourth embodiment will be described. In the wireless system 200 according to the present embodiment, the wireless device 10a, the wireless device 10b, the wireless device 10c, the wireless device 10d, and the wireless call control device 20 are provided in the facility, and a plurality of speakers are provided in the facility. It is fixedly placed in the place. A case where the present invention is carried out in such a facility will be described. Further, the meanings of the first radio and the second radio are the same as those in the first embodiment.

As shown in FIG. 10, in the facility of this embodiment, a plurality of speakers are installed at locations separated from each other. The dotted circles centered on the plurality of speakers indicate the reachable range of the sound emitted from each speaker. As shown in the block diagram of FIG. 11, the radio device 10b on the transmitting side uses the PA device 161 as the audio output unit of the radio device 10b, and the PA device 161 has a plurality of speakers 161-1, 161-2, 161-. 3 is connected. Hereinafter, the speaker 161-1 will be referred to as a speaker A, the speaker 161-2 will be referred to as a speaker B, and the speaker 161-3 will be referred to as a speaker C. From these plurality of speakers 161 the sound collected from the microphone of the radio 10b is amplified and output at the same time. The position information data of each of the plurality of speakers 161 is stored in advance in the storage unit 2 of the call control device 20, and is appropriately read out by the position information extraction unit 31. Further, it is assumed that the other radios 10a, 10c, and 10d are carried by a user at any location in this facility. The walls between the rooms shown in FIG. 10 shall not interfere with the transmission of voice.

The processing flow of the wireless system 200 will be specifically described with reference to FIG. 7. As in the first embodiment, a case where a group call transmission request is made from the first radio device 10b to a radio device group composed of a plurality of second radio devices 10a, 10c, and 10d is taken as an example.

First, each radio 10 periodically acquires its own position information data when the power is turned on, and transmits the position information data, the GID, and the UID to the call control device 20 (S10a to S10d). A specific example of the position information data is latitude / longitude information as in the first embodiment.

Next, the call control device 20 stores the position information data, GID, and UID received from each radio device 10 by the radio reception unit 41 in the position information management unit 21 of the storage unit 2 as table information (S20). Further, in the present embodiment, the call control device 20 stores the position information data of a plurality of speakers included in the wireless system 200 in advance in the position information management unit 21 of the storage unit 2 as table information together with the identification information of each speaker. ing. The form to be stored follows the format as shown in FIG. 12, as in the first embodiment.

Here, a case where the radio 10b specifies a radio having GID = 1 as a transmission destination group ID and starts a group call will be described. In this embodiment as well, as in the first embodiment, the radios having GID = 1 are the radio 10a, the radio 10b, and the radio 10c. The radio 10b transmits a group call transmission request to the call control device 20 (S30).

When the call control device 20 receives a group call transmission request from the radio 10b by the wireless reception unit 41 of the wireless communication unit 4, the position information extraction unit 31 of the communication control unit 3 is all belonging to GID = 1 from the storage unit 2. The position information data of the radio device 10 is searched, and the position information data and the UID of the radio device 10a and the radio device 10c are extracted. The position information extraction unit 31 also acquires position information data of a plurality of speakers included in the wireless system 200. The distance calculation unit 32 calculates the distances to the extracted radios 10a and 10c from the positions of the plurality of speakers, and outputs the distances to the communication means selection unit 33. That is, the distance from each of the speaker A, the speaker B, and the speaker C to the radio 10a, and the distance from each of the speaker A, the speaker B, and the speaker C to the radio 10c are calculated and output to the communication means selection unit 33.

The communication means selection unit 33 includes all the distances input from the distance calculation unit 32, that is, the distance Dsaa from the speaker A to the radio 10a, the distance Dsba from the speaker B to the radio 10a, and the distance Dsba from the speaker C to the radio 10a. The distance Dsca, the distance Dsac from the speaker A to the radio 10c, the distance Dsbc from the speaker B to the radio 10c, and the distance Dscc from the speaker C to the radio 10c are compared with a predetermined distance Dsth (for example, 6 m) for communication. Select the means (S40).

As a result of comparison with Dsth, the communication means selection unit 33 shows that any of the distance Dsaa, the distance Dsba, and the distance Dsca is within the distance Dsth, and any of the distance Dsac, the distance Dsbc, and the distance Dscc is within the distance Dsth. Therefore, "speaker output" is selected as the communication means, and the selection result is output to the wireless communication unit 4. That is, the communication means selection unit 33 selects "speaker output" when the plurality of second radios belonging to GID = 1 are within the distance Dth from at least one of the plurality of speakers. The processing of the call means selection unit 33 can be realized by causing a CPU or the like to execute a program.

When the radio 10b receives the "speaker output" from the call control device 20 in response to the group call transmission request, the radio 10b collects with a microphone instead of making a group call by long-distance wireless communication to the radio 10a and the radio 10c. A group call is established by outputting the sounded voice from the speaker. Therefore, the radio 10a and the radio 10c do not reproduce the voice by the group call with the radio 10b.

On the other hand, a case where the radio 10b starts a group call to the radio belonging to GID = 2 will be described. In this case, as shown in FIG. 10, the radio 10a, the radio 10b, the radio 10c, and the radio 10d belong to GID = 2.

When the call control device 20 receives a group call transmission request from the radio 10b to the radio belonging to GID = 2 by the radio reception unit 41 of the radio communication unit 4, the position information extraction unit 31 of the communication control unit 3 stores the data. The position information data of the plurality of second radios 10 belonging to GID = 2 is searched from the unit 2, and the position information data and the UID of the radios 10a, the radios 10c, and the radios 10d are extracted. The distance calculation unit 32 calculates the distances to the extracted radios 10a, radios 10c, and radios 10d from the positions of the plurality of speakers, and outputs the distances to the communication means selection unit 33.

The communication means selection unit 33 includes all the distances input from the distance calculation unit 32, that is, the distance Dsaa from the speaker A to the radio 10a, the distance Dsba from the speaker B to the radio 10a, and the distance Dsba from the speaker C to the radio 10a. Distance Dsca, distance Dsac from speaker A to radio 10c, distance Dsbc from speaker B to radio 10c, distance Dscc from speaker C to radio 10c, distance Dsad from speaker A to radio 10d, from speaker B The communication means is selected by comparing the distance Dsbd to the radio 10d and the distance Dscd from the speaker C to the radio 10d with a predetermined distance Dsth (for example, 8 m) (S40).

When the communication means selection unit 33 detects that the distances Dsad, Dsbd, and Dscd between the radio 10d and each speaker among the radio 10a, the radio 10c, and the radio 10d are not within Dsth, the communication means selection unit 33 communicates. "Wireless communication" is selected as the means, the selection result is output to the wireless communication unit 4, and the "wireless communication" response is transmitted to the radio 10b. The radio 10b executes a group call (S110). That is, when even one of all the radios 10 belonging to GID = 2 and none of the speakers of the plurality of speakers is within a predetermined range, the communication means selection unit 33 selects "wireless communication" as the communication means. ..

According to this example, the user who uses the radio 10b communicates the content uttered to the radio 10 belonging to the designated group ID according to the distance between each radio and each speaker in the facility. Since it can be transmitted by means, it is possible to suppress the difficulty of connecting to the communication partner due to the use of the radio frequency band by many users, and the user operation becomes complicated even when switching the communication means. You can do it while suppressing things.

In this example, a case where a group call is made from the radio 10b has been described as an example, but as in the first embodiment, an individual call from the radio 10b to any one of the other radios 10 is made. (Individual Call) may be used. Further, in this embodiment, only the radio 10b is connected to a plurality of speakers, but other radios are connected to the plurality of speakers, and speaker reproduction is performed from any of the radios. May be good.

The configuration in the embodiment described above can be realized by the CPU, memory, or other LSI of an arbitrary computer in terms of hardware, and can be realized by a program loaded in the memory in terms of software. Here, it is drawn by the functional blocks realized by their cooperation. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various ways by hardware only, software only, or a combination thereof.

In the embodiment shown above, a commercial radio using a long-distance wireless communication technology is used as the wireless communication. However, not limited to long-range wireless communication technology, wireless communication by short-range wireless communication technology such as Bluetooth or Wi-Fi may be used, and the distance between the transmitting side radio and the receiving side radio may be increased. Depending on the situation, long-range wireless communication, short-range wireless communication, and speaker output may be switched as appropriate. In this case, for example, is the receiving radio as seen from the transmitting radio within the range where the voice can reach the speaker output, or is it within the range where communication is possible by short-range wireless communication farther than that? The communication means selection unit 33 may determine and switch depending on whether the range is farther than the above. According to this embodiment, the degree of freedom of configuration can be improved.

20 wireless call control device, 2 storage unit, 3 communication control unit, 4 wireless communication unit, 150 voice input unit, 160 voice output unit, 170 PTT detection unit, 10 radio equipment, 100a wireless communication system (Embodiment 1), 100b wireless communication system (Embodiment 2), 200 wireless communication system (Embodiment 4)

Claims (5)

A first receiving unit that receives a combination including a group ID for identifying a group of each radio and a position information of the radio from a plurality of radios, and a first receiving unit.
A second receiving unit that receives a group call transmission request for which a destination group ID is specified from the first radio among the plurality of radios.
An extraction unit that extracts the position information of the second radio corresponding to the group ID that matches the group ID of the transmission destination among the plurality of radios, and
A calculation unit that calculates the distance between the position information extracted by the extraction unit and the first radio unit,
Based on the distance calculated by the calculation unit, a selection unit that selects a transmission means to be used by the first radio when making the group call, and a selection unit.
A transmission unit that transmits transmission means notification information for notifying the first radio of the transmission means selected by the selection unit, and a transmission unit.
A call control device comprising. The transmission means selected by the selection unit includes a loudspeaker connected to the first radio, and is used as the transmission means when all of the distances calculated by the calculation unit are equal to or less than a predetermined distance. The call control device according to claim 1, wherein the loudspeaker is selected. The second receiving unit further receives the position information of the loudspeaker connected to the first radio, and receives the position information of the loudspeaker.
The calculation unit calculates the distance between the position information extracted by the extraction unit and the position information of the loudspeaker received by the second receiving unit.
The call control device according to claim 1. A first receiving unit that receives a combination including a group ID for identifying a group of each radio and a position information of the radio from a plurality of radios, and a first receiving unit.
A second receiving unit that receives a group call transmission request for which a destination group ID is specified from the first radio among the plurality of radios.
A first extraction unit that extracts the position information of the second radio corresponding to the group ID that matches the group ID of the transmission destination among the plurality of radios, and
A second extraction unit that extracts information that identifies one or more loudspeakers and position information that indicates the position of the one or more loudspeakers.
A calculation unit that calculates the distance between the position information extracted by the first extraction unit and one or more position information extracted by the second extraction unit, and a calculation unit.
Based on the distance calculated by the calculation unit, a selection unit that selects a transmission means to be used by the first radio when making the group call, and a selection unit.
A transmission unit for transmitting transmission means notification information for notifying the first radio of the transmission means selected by the selection unit is provided.
The transmission means selected by the selection unit includes at least one or a plurality of loudspeakers connected to the first radio, and when all the distances calculated by the calculation unit are shorter than a predetermined distance, the above-mentioned Select the loudspeaker as the means of transmission,
A call control device characterized by the fact that. A step of receiving a combination of a group ID that identifies a group of each radio and the position information of the radio from a plurality of radios, and
A step of receiving a group call transmission request in which a destination group ID is specified from the first radio of the plurality of radios, and a step of receiving the group call transmission request.
A step of extracting the position information of the second radio corresponding to the group ID matching the group ID of the transmission destination among the plurality of radios, and
A step of calculating the distance between the position information extracted by the extraction unit and the first radio, and
A step of selecting a transmission means to be used by the first radio when making the group call based on the distance calculated by the calculation unit, and
A step of transmitting transmission means notification information for notifying the first radio of the transmission means selected by the selection unit, and
Call control methods including.

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