JP2021019263A - Wireless device, wireless communication system, and wireless communication method - Google Patents

Abstract

To provide a wireless device, a wireless communication system, and a wireless communication method that can perform desired communication.SOLUTION: In a wireless communication system 100 including a plurality of wireless devices 1, each of the wireless devices 1 includes: a call control unit 10a that keeps a half-duplex session with an opposite-side wireless device during a session keeping time; a voice analysis unit 19 that recognizes a predetermined voice in the session; and an extension unit 10b that extends the session keeping time when the predetermined voice is recognized by the voice analysis unit 19.SELECTED DRAWING: Figure 5

Description

The present invention relates to radios, wireless communication systems and wireless communication methods.

In wireless devices such as commercial wireless systems, a communication method via a half-duplex session, specifically, PTT (Push to Talk), which enables a wireless device pressing a call button to transmit voice, is used. ing. Further, in such a radio, it is possible to make a group call between one-to-many radios and an individual call between one-to-one radios.

Patent Document 1 is known as a technique related to such a radio. Patent Document 1 describes a radio that is used by switching between a group call and an individual call. In addition, Patent Document 2 is known as a technique related to the session. Patent Document 2 describes that the maintenance time of a session identified by an IP address and a port number is dynamically extended in response to a request from a terminal or reception of an Ac signal.

Japanese Unexamined Patent Publication No. 2007-243864 Japanese Unexamined Patent Publication No. 2016-33811

The radio described in Patent Document 1 can make a group call or an individual call according to a user's designation. For example, in a professional wireless system, a group call is often used as the default, and in this case, when there is no call for a predetermined time after making an individual call, it is set to return to the group call as if the session has ended. In many cases. That is, in the related radio, a session maintenance time for maintaining a session for controlling a group call, an individual call, or the like is set.

However, there is a problem that desired communication may not be possible depending on the setting of the session maintenance time and the like.

The present invention recognizes a session control unit that maintains a half-duplex session with a remote radio during a session maintenance time, a voice recognition unit that recognizes a predetermined voice in the session, and the predetermined voice. If so, a radio is provided that includes an extension that extends the session maintenance time.

The present invention is a wireless communication system including a calling side radio and a called side radio, and the calling side radio is in contact with the called side radio during the calling side session maintenance time. A session control unit that maintains a half-duplex session, a voice recognition unit that recognizes a predetermined voice to be transmitted in the session, and an extension that extends the session maintenance time of the calling side when the predetermined voice is recognized. The called party radio has a session control unit that maintains a half-duplex session with the calling party radio during the called party's session maintenance time, and a predetermined unit received in the session. Provided is a wireless communication system including a voice recognition unit that recognizes the voice of the above, and an extension unit that extends the session maintenance time of the called party when the predetermined voice is recognized.

The present invention maintains a half-duplex session with the other party radio during the session maintenance time, recognizes a predetermined voice in the session, and when the predetermined voice is recognized, the session maintenance time is set. Provide an extended wireless communication method.

According to the present invention, it is possible to provide a radio, a wireless communication system, and a wireless communication method capable of performing desired communication.

It is a block diagram which shows the structural example of the wireless communication system which concerns on Embodiment 1. FIG. It is a sequence diagram which shows the operation example of the radio device which concerns on study example 1. FIG. It is a figure which shows the display example in the radio device which concerns on Embodiment 1 and Study Example 1. It is a sequence diagram which shows the operation example of the radio device which concerns on Embodiment 1. FIG. It is a block diagram which shows the structural example of the radio equipment which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 1. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 1. FIG. It is a sequence diagram which shows the operation example of the radio device which concerns on study example 2. FIG. It is a figure which shows the display example in the radio device which concerns on Embodiment 2 and Study Example 2. It is a sequence diagram which shows the operation example of the radio device which concerns on Embodiment 2. FIG. It is a block diagram which shows the structural example of the radio equipment which concerns on Embodiment 2. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 2. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 2. It is a block diagram which shows the structural example of the wireless communication system which concerns on Embodiment 3. It is a block diagram which shows the structural example of the radio device which concerns on Embodiment 3. FIG. It is a sequence diagram which shows the operation example of the radio device which concerns on Embodiment 3. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 3. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 3. FIG. It is a flowchart which shows the operation example of the radio device which concerns on Embodiment 3. FIG. It is a block diagram which shows the structural example of the wireless device which concerns on other embodiment.

(Embodiment 1)
Hereinafter, the first embodiment will be described with reference to the drawings. FIG. 1 shows a configuration example of a wireless communication system according to the present embodiment. As shown in FIG. 1, the wireless communication system 100 according to the present embodiment is, for example, a commercial wireless system, and includes a plurality of wireless devices 1 that perform wireless communication with each other. In this example, the radio 1A (first radio), the radio 1B (second radio), and the radio 1C (third radio) used by the speakers 2A to 2C are provided. The radio 1 is a so-called transceiver, and makes a call by a PTT method using a session of a half-duplex communication method. Further, the radio 1 makes a group call of a specific group or an individual call with a specific radio according to the operation of the speaker 2.

Here, an example in which the radio 1 transmits / receives voice data to make a voice call will be described, but the radio is not limited to voice and may transmit / receive other data. Further, the wireless communication system 100 may be provided with a repeater or the like that relays wireless communication, if necessary.

In the present embodiment, an example in which the radio 1 makes a group call and an individual call with an ID specified in a digital conventional environment will be described. For example, when the calling side radio 1A starts an individual call to the receiving side radio 1B, the speaker 2A selects and specifies the ID of the other party's radio 1B and presses the PTT button to make the call. Do. If the PTT button is pressed without specifying the other party, it will not be an individual call but a group call. When the radio 1B that receives the call from the radio 1A answers, the radio 1A and the radio 1B are in a call state, and the other party in the call state can be reached by simply pressing the PTT button without performing the designated operation of the call partner. You can make a call. If the call is not started from either the radios 1A and 1B for a certain period of time, the call state is canceled, and thereafter, simply pressing the PTT button returns to the state of a group call. The fixed time for continuing this call state (session), that is, the time until the call state is canceled (returning from the individual call state to the group call state) is defined as the "call state duration (session maintenance time)". If the duration of the call status is too long, it will take time to automatically return from the individual call status to the group call status, and the default group call cannot be made in many cases, which hinders business calls. It is necessary to set it to an appropriate value so that it does not exist.

Various settings of the radio 1 can be performed by a dedicated PC application (application program of a personal computer), and the duration of the call state can also be set to an arbitrary value by the PC application.

<Operation of Study Example 1>
Here, in order to help the understanding of the present embodiment, a study example 1 before the application of the present embodiment will be described. In Study Example 1, in a radio in a digital conventional environment, the duration of a call state can be set in advance by a PC application, but there is no way to dynamically change the setting during operation, so the value is always fixed. It becomes an operation. Therefore, in Examination Example 1, if the setting of the call state duration is short, even if the called party tries to return a response to the question from the calling party, as described below, the callee returns to a party different from the intended party. There is a problem that it may end up.

FIG. 2 shows the operation of the study example 1 when this problem occurs, and FIG. 3 shows a display example of the radio in this case. The radio of Study Example 1 is referred to as a radio 9.

FIG. 2 shows an example in which an ID is specified to make an individual call in a digital conventional environment, and the radios 9A to 9C make a group call or an individual call by operating the speakers 2A to 2C. In the example of FIG. 2, the radio 9A stands by at group ID = X, and the radios 9B and 9C stand by at group ID = Y. For example, the speakers 2A to 2C operate the radios 9A to 9C to select the channel of the group, and the radio 9A displays the standby state (standby) of the group X as shown in FIG. 3A. , The standby state of the group Y is displayed on the radios 9B and 9C as shown in FIG. 3B.

In that state, an individual call is started from the transmitting side radio 9A to the receiving side radio 9B. That is, the radio 9A displays the destination ID list as shown in FIG. 3C and selects the radio 9B (Transceiver B) of the other party in response to the operation of the speaker 2A (S101). When the speaker 2A presses the PTT button of the radio 9A with the radio 9B selected (S102), the radio 9A sets the ID of the selected radio 9B as the destination, and the radio 9A is set. The individual call start in which the ID of is set as the source is transmitted (S103). At this time, the radio 9A displays the call status (during a call) of the individual call with the radio 9B as shown in FIG. 3D. For example, a call state, that is, a call is in progress, is indicated by a musical note icon on the upper right of the display unit. Upon receiving this individual call start, the radio 9B starts voice output from the radio 9A (S104). At this time, the radio 9B displays the call status of the individual call with the radio 9A as shown in FIG. 3 (e).

Then, the radio 9A asks the radio 9B "Can you hear me?" (S105). When the speaker 2A speaks "Can you hear?" While pressing the PTT button of the radio 9A, the radio 9A transmits the voice data to the radio 9B (S106) and receives the voice data. The radio 9B outputs the voice "Can you hear?" To the speaker 2B (S107).

After that, the speaker 2A releases (releases) the PTT button of the radio 9A to end the transmission. When the speaker 2A releases the PTT button of the radio 9A (S108), the radio 9A transmits the voice data termination to the radio 9B (S109), and the radio 9B receives the voice data termination. , Ends the audio output (S110).

The radio 9A on the calling side continues the call state from T0 when the hand is released from the PTT button or when the end of the voice data is transmitted to T1 where the call state duration Tc set in the radio 9A has elapsed. Since the radio 9A continues the call state during the call state duration Tc, the call state of the individual call with the radio 9B is displayed as shown in FIG. 3D, and after the call state duration Tc elapses, In order to return to the group call, the standby state of the group X is displayed as shown in FIG. 3A. Further, the radio 9B on the receiving side continues the call state from T2, which has finished the voice output or received the end of the voice data, to T3, which has passed the call state duration Tc set in the radio 9B. Since the radio 9B continues the call state during the call state duration Tc, the call state of the individual call with the radio 9A is displayed as shown in FIG. 3 (e), and after the call state duration Tc elapses, In order to return to the group call, the standby state of the group Y is displayed as shown in FIG. 3 (b).

For example, the call state duration Tc preset in the receiving radio 9B is set to 3 seconds. Then, when the speaker 2B tries to respond by pressing the PTT button of the radio 9B 5 seconds after the radio 9B receives the end of the voice data from the radio 9A (S111), it is described as the above-mentioned problem. As described above, the transmission is not the response of the individual call to the radio 9A, but the transmission of the group call. That is, the radio 9B transmits a group call start (S112), and the radio 9C waiting with the same group ID receives this and starts voice output (S113). Therefore, even if the speaker 2B subsequently speaks to the radio 9B "Yes, I can hear" (S114), the voice data is transmitted as a group call (S115), and the radio 9C voices "Yes, I can hear it." I can hear you. ”Is output to the speaker 2C (S116). As shown in FIG. 3 (f), the radio 9C displays the call status with the radio 9B of the group Y. As described above, in Study Example 1, even if the radio 9B tries to answer the individual call to the radio 9A, it becomes a group call including the radio 9C, so that the intended desired call cannot be made.

<Operation of the first embodiment>
In view of the problem as in the above study example 1, in the present embodiment, when the receiving radio device performs voice recognition processing on the received voice and detects, for example, a keyword related to "question", a call is made. By dynamically changing the state duration to a longer time than usual and operating it, even if the timing to send the response is slightly delayed, the response can be returned correctly to the intended party. The duration of the call state may be a fixed value or a value learned during operation.

FIG. 4 shows the operation of the wireless communication system according to the present embodiment when the present embodiment is applied to the first study example of FIG.

As shown in FIG. 2, as in FIG. 2, the radio 1A on the transmitting side waits on the radio 1A on the called side while the radios 1B and 1C stand on standby on the group ID = Y, as in FIG. An individual call is started by designating an ID for the machine 1B (S101 to S104).

Subsequently, with the PTT button pressed, the radio 1A asks the radio 1B "Can you hear?" (S105), and the audio data is transmitted from the radio 1A to the radio 1B (S106). ). Here, in the present embodiment, the receiving side radio 1B analyzes the voice data wirelessly received from the transmitting side radio 1A, and recognizes, for example, a "question" (S121). The radio 1B that recognizes the "question" sets the duration Tc of the call state to be activated when the voice data termination from the radio 1A is received to a longer time (for example, 10 seconds) than the normal time (for example, 3 seconds). Dynamically extend and set. The length of the extended time may be extended by a predetermined time when the voice is recognized, or may be extended according to the recognized voice. For example, the time may be set according to the length of the recognized voice.

After that, the speaker 2A releases the PTT button of the radio 1A to end the transmission (S108 to S110). Similar to Examination Example 1, the transmitting side radio 1A continues the call state from T0 when the hand is released from the PTT button or when the end of the voice data is transmitted to T1 where the call state duration Tc has elapsed. On the other hand, the radio 1B on the called side continues the call state from T2, which has finished the voice output or received the end of the voice data, until the extended call state duration Tc elapses.

For example, when the speaker 2B tries to respond by pressing the PTT button of the radio 1B 5 seconds after receiving the voice data termination from the radio 1A (S122), the transmission is a group call transmission. Since it is an individual response to the radio 1A, the response can be correctly returned to the intended partner. That is, unlike Examination Example 1, in the present embodiment, since the call state is maintained up to the extended call state duration Tc, the radio 1B transmits a response to the radio 1A (S123), and the radio Machine 1A starts audio output (S124). In this example, since each message including the destination ID is transmitted during communication, the radio 1A can receive the response even if the call state duration Tc has elapsed. Then, when the speaker 2B speaks to the radio 1B "Yes, I can hear" (S125), the voice data is transmitted to the radio 1A (S126), and the radio 1A hears "Yes, I can hear." Is output to the speaker 2A (S127).

<Configuration and operation of the receiving radio in the first embodiment>
FIG. 5 shows a configuration example of the receiving side radio 1 (for example, 1B) according to the present embodiment. As shown in FIG. 5, the radio 1 according to the present embodiment includes a control unit 10, a storage unit 11, a timer management unit 12, an operation unit 13, a display unit 14, a voice input unit 15, a voice output unit 16, and a radio. It includes a receiving unit 17, a wireless transmitting unit 18, and a voice analysis unit 19. It should be noted that each configuration of FIG. 5 is an example, and other configurations may be used as long as the operation according to the present embodiment is possible. For example, some of the configurations of FIG. 5 may be one or any number of blocks or devices.

The control unit 10 is a control unit that controls necessary operations based on information input from each unit of the radio 1. The control unit 10 includes a call control unit (session control unit) 10a that controls the continuation of the call state, an extension unit 10b that extends the duration of the call state based on voice recognition, and the like. For example, the function of the control unit 10 is realized by executing the program stored in the storage unit 11 by a processor such as a CPU (Central Processing Unit).

The storage unit 11 stores programs and data necessary for the operation of the radio 1. The storage unit 11 stores the ID of the radio 1, the ID of the radio 1 of the other party, the question detection flag indicating that the voice analysis unit 19 has detected the question, and the like. For example, the storage unit 11 is a non-volatile memory such as a flash memory, a hard disk, or the like. The timer management unit 12 manages the operation of the timer in response to an instruction from the control unit 10. The timer management unit 12 manages the setting, extension, start, stop, expiration, etc. of the timer (call continuation timer) of the call state duration.

The operation unit 13 is an operation unit operated by the speaker 2 to perform desired communication. The operation unit 13 includes a PTT button for making a call, a selection key for selecting a call partner, and the like. For example, the operation unit 13 is various keys, switches, touch panels, and the like. The display unit 14 is a display unit that displays according to the operation of the speaker 2 and displays according to wireless communication. The display unit 14 displays a list of call partners, a call status of a group call or an individual call, and the like. For example, the display unit 14 is a liquid crystal display, an organic EL display, or the like.

The voice input unit 15 is an input unit for inputting voice for a call from the speaker 2, such as a microphone. With the PTT button pressed, voice can be input to the voice input unit 15. The voice output unit 16 is an output unit that outputs voice received from the wireless device 1 of the other party, for example, a speaker or the like. The voice received during the call state is output from the voice output unit 16.

The wireless receiving unit 17 is a receiving unit that receives a wireless signal from the wireless device 1 of the other party. The radio receiving unit 17 receives a radio signal of a channel used in a group call or an individual call. The wireless transmission unit 18 is a transmission unit that transmits a wireless signal to the wireless device 1 of the other party. The wireless transmission unit 18 transmits a wireless signal on a channel used in a group call or an individual call. The wireless transmission unit 18 transmits the input voice while pressing the PTT button. The wireless receiving unit 17 and the wireless transmitting unit 18 are also communication units that perform wireless communication with the other wireless device 1.

The voice analysis unit (voice recognition unit) 19 has an interface for inputting a voice signal from the wireless reception unit 17, and the wireless reception unit 17 recognizes the voice of the voice signal received from the wireless device 1 of the other party. The voice analysis unit 19 recognizes a predetermined voice whose duration of the call state should be extended. The predetermined voice to be recognized is a voice including a predetermined keyword, for example, a question including a question expected to be answered by the other party. For example, "Can you hear?", "Can you hear?", "Can you hear?", "Hello", "Hey", "~?", "Isn't it?", "Please try again", " Please tell me "," Please answer ", etc. In addition, "Please wait a moment", "Wait a moment", etc. may be used, as if you wish to extend the duration of the call status. In addition, it is preferable to consider voice parameters such as intonation and accent of the ending, voice volume, and voice length. For example, in the case of a voice having a volume louder than a predetermined volume or a voice having a time longer than a predetermined time, it may be recognized that the voice is a predetermined voice. The method of recognizing voice is not particularly limited, and machine learning or any voice recognition technology may be used.

6A and 6B show an operation example of the receiving side radio 1 (for example, 1B) according to the present embodiment. As shown in FIGS. 6A and 6B, first, the control unit 10 initializes the question detection flag of the storage unit 11 to OFF (S201). Subsequently, the control unit 10 determines the state of the radio 1 (S202), and if there is no transmission / reception (S202 / no transmission / reception), waits until transmission or reception is started. When the state of the radio 1 is voice transmission (S202 / voice transmission), the control unit 10 waits until the voice transmission is completed in response to the operation of the speaker 2 (S203), and then performs the next process. .. That is, the control unit 10 determines whether or not the voice transmission is completed (S203), and if the voice transmission is not completed (S203 / No), returns to the process (S202) according to the state of the radio 1. When the voice transmission is completed (S203 / Yes), the state of the radio 1 is set to no transmission / reception (S204), and the following processing is performed.

On the other hand, when the state of the radio 1 is receiving voice addressed to itself (S202 / receiving voice (addressed to itself)), the voice analysis unit 19 analyzes the voice from the radio receiving unit 17 (S205). For example, the voice analysis unit 19 determines whether or not a "question" of the other party has been detected based on a predetermined keyword (S206). When the voice analysis unit 19 detects the "question" of the other party (S206 / Yes), the control unit 10 sets the question detection flag of the storage unit 11 to ON (S207). When the "question" is not detected (S206 / No), or after the question detection flag is ON (S207), the next process is performed.

Subsequently, the control unit 10 determines whether or not the voice transmission is started in response to the operation of the speaker 2 (S208), and when the voice transmission is started (S208 / Yes), the state of the radio 1 (S209), and the process returns to the process (S202) according to the state of the radio 1. If the voice transmission is not started (S208 / No), the control unit 10 waits until the reception of the voice from the other party is completed (S210), and then performs the next process. That is, the control unit 10 determines whether or not the voice reception is completed (S210), and if the voice reception is not finished (S210 / No), returns to the process (S202) according to the state of the radio 1. When the voice reception is completed (S210 / Yes), the state of the radio 1 is set to no transmission / reception (S211), and the following processing is performed.

Following the process without transmission / reception (S204 or S211), the control unit 10 determines the state of the question detection flag (S212). When the question detection flag is OFF (S212 / OFF), the control unit 10 activates the call continuation timer for the timer management unit 12 at a preset time (for example, 3 seconds) (S213). On the other hand, when the question detection flag is ON (S212 / ON), the control unit 10 (extension unit 10b) calls the timer management unit 12 for a longer time (for example, 10 seconds) than the preset time. Is started (S214), and the question detection flag is initialized to OFF (S215).

Subsequently, the control unit 10 (call control unit 10a) continues the call state until the call continuation timer expires. The control unit 10 determines whether or not the reception of voice from the other party has started (S216), and when the reception of voice has started (S216 / Yes), the state of the radio 1 is set to voice reception (S221). , The call continuation timer is stopped (S222). When the voice reception does not start (S216 / No), the control unit 10 determines whether or not the voice transmission has started in response to the operation of the speaker 2 (S217), and the voice transmission has started. In the case (S217 / Yes), the state of the radio 1 is set to voice transmission (S220), and the call continuation timer is stopped (S222). Further, when the voice transmission is not started (S217 / No), the control unit 10 determines whether or not the stop factor of the call continuation timer has occurred (S218), and when the stop factor of the call continuation timer has occurred (S218). / Yes), the call continuation timer is stopped (S222). When the stop factor of the call continuation timer does not occur (S218 / No), it is determined whether or not the call continuation timer has expired (S219), and when the call continuation timer has not expired (S219 / No), reception start processing (S219 / No) S216) and subsequent steps are repeated. After stopping the call continuation timer (S222) or when the call continuation timer expires (S219 / Yes), the process returns to the process (S202) according to the state of the radio 1.

<Effect of Embodiment 1>
In the present embodiment, when an individual call with an ID specified is performed in a digital conventional environment, the receiving radio device recognizes a predetermined voice for the received voice signal. Then, for example, when a "question" that is expected to be answered by the other party is detected, the time until the call state is canceled is set longer than the time preset by the PC application. As a result, in the present embodiment, when the receiving side radio responds to the question from the calling side radio, even if the response is delayed to some extent, the transmission is not performed in the group call, but the calling side. It can be transmitted as an individual call to the radio of the above, and can communicate with the intended desired party.

(Embodiment 2)
Next, the second embodiment will be described with reference to the drawings. The configuration of the wireless communication system according to the present embodiment is the same as that of FIG. 1 of the first embodiment. For example, the wireless communication system 100 includes radios 1A and 1B.

In the present embodiment, an example in which the radio 1 performs an individual call by designating optional signaling will be described. Optional signaling includes 2-Tone and DTMF (Dual-Tone Multi-Frequency). In an analog / digital conventional environment, when the calling radio 1A starts an individual call, the speaker 2A selects and specifies the standby optional signaling of the receiving radio 1B and presses the PTT button to make a call. Do. If the PTT button is pressed without specifying optional signaling, the call will not be completed. When the radio 1B that receives the call from the radio 1A answers, the radio 1A and the radio 1B are in a call state, and the other party in the call state can be reached by simply pressing the PTT button without performing the designated operation of the call partner. You can make a call. If the call is not started from either the radios 1A and 1B for a certain period of time, the call state is canceled, and then the call is returned to the state in which the call cannot be established only by pressing the PTT button. Even when performing optional signaling, the fixed time for continuing this call state, that is, the time until the call state is canceled (returning from the state of individual call to the state before the designation of the other party) is referred to as "call state duration". To do. If the duration of the call status is too long, it will take time to automatically return from the individual call status to the status before the other party was specified, and it may not be possible to make a call with another radio. It is necessary to set an appropriate value so as not to interfere with.

<Operation of Study Example 2>
Here, in order to help the understanding of the present embodiment, a study example 2 before the application of the present embodiment will be described. In Study Example 2, in the radio that performs optional signaling, the call state duration can be set in advance by the PC application, but there is no way to dynamically change the setting during operation, so the value is always fixed. It becomes an operation. Therefore, in Study Example 2, if the setting of the duration of the call state is short, as described below, even if the called party tries to return a response to the question from the calling party, the intended party cannot receive or responds. There is a problem that it may take time to return.

FIG. 7 shows the operation of Study Example 2 when these problems occur, and FIG. 8 shows a display example of the radio in this case. The radio of Study Example 2 is referred to as a radio 9.

FIG. 7 shows an example of making an individual call by specifying optional signaling in an analog conventional environment, and by operating the speaker 2A, the calling radio 9A uses a DTMF code (9, 8, 7, 6, 5,) as optional signaling. 4 ・ 3 ・ 2 ・ 1 ・ 0) is waiting, and by the operation of the speaker 2B, the radio 9B on the called side receives the DTMF code (0 ・ 1 ・ 2 ・ 3 ・ 4 ・ 5 ・ 6 ・ 7 as optional signaling.・ Waiting for 8 ・ 9). For example, the speakers 2A and 2B select channels to be used by each other, and the radios 9A and 9B display the standby state of the channel 1 as shown in FIG. 8A.

In that state, the DTMF code (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) is transmitted from the calling side radio 9A to the receiving side radio 9B, and individual calls are made. Start. That is, the radio 9A displays the DTMF code list as shown in FIG. 8B and selects the DTMF code (0123456789) of the other party's radio 9B in response to the operation of the speaker 2A (S301). When the speaker 2A presses the PTT button of the radio 9A with the DTMF code of the radio 9B selected (S302), the radio 9A changes the DTMF code of the selected radio 9B (0.1. 2 ・ 3 ・ 4 ・ 5 ・ 6 ・ 7 ・ 8 ・ 9) is transmitted (S303). At this time, the radio 9A displays the call status of the individual call of the channel 1 as shown in FIG. 8C. Upon receiving this DTMF code, the radio 9B starts audio output from the radio 9A (S304). At this time, the radio 9B displays the call status of the individual call of the channel 1 as shown in FIG. 8C.

Then, the radio 9A asks the radio 9B "Can you hear me?" (S305). When the speaker 2A speaks "Can you hear?" While pressing the PTT button of the radio 9A, the radio 9A transmits the voice data to the radio 9B (S306) and receives the voice data. The radio 9B outputs the voice "Can you hear?" To the speaker 2B (S307).

After that, the speaker 2A releases the PTT button of the radio 9A to end the transmission. When the speaker 2A releases the PTT button of the radio 9A (S308), the radio 9A transmits the voice data termination to the radio 9B (S309), and the radio 9B receives the voice data termination. , Ends the audio output (S310).

Similar to Examination Example 1, the transmitting radio 9A continues the call state from T0 when the hand is released from the PTT button or when the end of the voice data is transmitted to T1 where the call state duration Tc has elapsed. Since the radio 9A continues the call state during the call state duration Tc, the individual call status is displayed as shown in FIG. 8C, and after the call state duration Tc elapses, the call state of the individual call is changed. To finish, the standby status is displayed as shown in FIG. 8A. Further, the radio 9B on the called side continues the call state from T2, which has finished the voice output or received the end of the voice data, to T3, which has passed the call state duration Tc. Since the radio 9B continues the call state during the call state duration Tc, the individual call status is displayed as shown in FIG. 8C, and after the call state duration Tc elapses, the call state of the individual call is changed. To finish, the standby status is displayed as shown in FIG. 8A.

For example, the call state duration Tc set in advance for both the calling side radio 9A and the receiving side radio 9B is set to 3 seconds. Then, as shown in FIG. 7A, when the speaker 2B responds by pressing the PTT button of the radio 9B 5 seconds after the radio 9B receives the end of the voice data from the radio 9A. (S311), as described as the above task, the radio 9A cannot receive this response. That is, the radio 9A does not receive the DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0) even though it needs to be re-received. The signal from the radio 9B is not accepted. In this situation, even if the radio 9B transmits a response (S312) or the voice data by the voice input (S313) is transmitted (S314), the radio 9A does not receive the response. As described above, in Study Example 2, even if the radio 9B responds to the individual call to the radio 9A, the radio 9B does not receive the response, so that the intended desired call cannot be made.

Further, as shown in FIG. 7B, 5 seconds after the radio 9B receives the end of the voice data from the radio 9A, DTMF is operated according to the operation of the speaker 2B as shown in FIG. 8D. Display the code list, select the DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0) of the radio 9A (S315), and press the PTT button of the radio 9B. (S316), the radio 9A can receive the response from the radio 9B. However, since the voice data cannot be transmitted until the radio 9B completes the transmission of the DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0), as described above. In addition, it takes time to return a response. In this situation, the radio 9B transmits a DTMF code in response to the destination selection (S315) and the pressing of the PTT button (S316) (S317), the radio 9A starts audio output (S318), and the radio 9B further. The voice data is transmitted (S320) in response to the voice input (S319), and the radio 9A outputs the voice (S321). As described above, in Study Example 2, since it is necessary to transmit the DTMF code from the radio 9B to the radio 9A so that the radio 9A can receive the response, it takes time to make a desired call. ..

<Operation of the second embodiment>
In view of the problem as in the above study example 2, in the present embodiment, the duration of the call state is extended on both the incoming side and the outgoing side radios. That is, as in the first embodiment, when the receiving radio device performs voice recognition processing on the received voice and detects, for example, a keyword related to "question", the duration of the call state is set to be longer than usual. By dynamically changing and operating for a long time, even if the timing of sending the response is slightly delayed, the response can be returned correctly to the intended party.

Furthermore, when the calling radio performs voice recognition processing on the microphone input voice and detects, for example, a keyword related to "question", the duration of the call state is dynamically changed to a longer time than usual. By operating the system, it is not necessary to send the DTMF code again when the receiving radio returns the response, and the response can be returned immediately.

FIG. 9 shows the operation of the wireless communication system according to the present embodiment when the present embodiment is applied to the second study example of FIG. 7.

As shown in FIG. 9, as in FIG. 7, when performing optional signaling in an analog conventional environment, the radio 1A has a DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0). The radio 9B is listening for the DTMF code (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) as an optional signaling, and the radio 1A on the calling side to the radio on the called side. A DTMF code (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) is transmitted to the machine 1B, and individual calls are started (S301 to S304).

Subsequently, with the PTT button pressed, the radio 1A asks the radio 1B "Can you hear?" (S305), and the audio data is transmitted from the radio 1A to the radio 1B (S306). ). Here, in the present embodiment, the radio 1A on the transmitting side analyzes the voice data input by the microphone and recognizes, for example, a "question" (S331). The radio 1A that recognizes the "question" from the microphone input voice dynamically changes and sets the call state duration Tc that starts after the end of transmission to a longer time (for example, 10 seconds) than the normal time (for example, 3 seconds). To do. Similar to the first embodiment, the length of the extended time may be extended by a predetermined time when the voice is recognized, or may be extended according to the recognized voice. Further, similarly to the first embodiment, the receiving side radio 1B analyzes the voice data wirelessly received from the transmitting side radio 1A and recognizes, for example, a "question" (S332). The radio 1B that recognizes "ask a question" from the radio received voice has a call state duration Tc that is activated when the voice data termination from the radio 1A is received, which is longer than the normal time (for example, 3 seconds) (for example). Dynamically change to 10 seconds) and set. It is preferable that the extension time is the same on the calling side and the receiving side.

After that, the speaker 2A releases the PTT button of the radio 1A to end the transmission (S308 to S310). The calling side radio 1A continues the call state from T0 when the hand is released from the PTT button or transmitted the end of the voice data until the extended call state duration Tc elapses, and the calling side radio 1B Also, the call state is continued until the extended call state duration Tc elapses from T2 when the voice output is terminated or the voice data end is received.

For example, when the speaker 2B tries to answer by pressing the PTT button of the radio 1B 5 seconds after receiving the end of the voice data from the radio 1A (S333), the call status of the radio 1A is changed. Since it continues, the signal from the radio 1B can be received without having to re-receive the DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0). Further, the radio 1B does not need to transmit the DTMF code (9, 8, 7, 6, 5, 4, 3, 2, 1, 0), and the response can be returned immediately. That is, unlike Study Example 2, in the present embodiment, the radio 1B transmits a response to the radio 1A (S334), and the radio 1A starts voice output. Then, when the speaker 2B speaks to the radio 1B "Yes, I can hear" (S335), the voice data is transmitted to the radio 1A (S336), and the radio 1A speaks "Yes, I can hear." Is output to the speaker 2A (S337).

<Configuration and operation of the transmitting side radio of the second embodiment>
The configuration and operation of the radio on the transmitting side according to the present embodiment will be described. The configuration and operation of the called party are the same as those in the first embodiment.

FIG. 10 shows a configuration example of the transmitting side radio 1 (for example, 1A) according to the present embodiment. As shown in FIG. 10, the radio 1 according to the present embodiment has a control unit 10, a storage unit 11, a timer management unit 12, an operation unit 13, a display unit 14, and a voice input unit, as in the first embodiment. A voice output unit 16, a wireless reception unit 17, a wireless transmission unit 18, and a voice analysis unit 19 are provided. In the present embodiment, the voice analysis unit 19 has an interface for inputting a voice signal from the voice input unit 15, and the voice input unit 15 recognizes the voice of the voice signal input from the speaker 2. Others are the same as the configuration of the called party in the first embodiment.

11A and 11B show an operation example of the transmitting side radio 1 (for example, 1A) according to the present embodiment. Compared with the operation of the first embodiment, voice analysis processing (S223 to S225) from the voice input unit during voice transmission is added, and voice analysis processing (S205 to S207) from the wireless reception unit during voice reception addressed to itself is added. ) Is omitted. Others are the same as those in the first embodiment.

First, the control unit 10 initializes the question detection flag of the storage unit 11 to OFF (S201), determines the state of the radio 1 (S202), and if there is no transmission / reception (S202 / no transmission / reception), transmission or reception is performed. Wait until it starts. When the state of the radio 1 is during voice transmission (S202 / during voice transmission), the voice analysis unit 19 analyzes the voice from the voice input unit 15 (S223). For example, when the voice analysis unit 19 determines whether or not the "question" of the speaker 2 is detected based on a predetermined keyword (S224), when the voice analysis unit 19 detects the "question" (S224 / Yes), The control unit 10 sets the question detection flag of the storage unit 11 to ON (S225). When the "question" is not detected (S224 / No), or after the question detection flag is ON (S225), the next process is performed. Subsequently, the control unit 10 waits until the voice transmission is completed in response to the operation of the speaker 2 (S203), and then performs the next process. That is, the control unit 10 determines whether or not the voice transmission is completed (S203), and if the voice transmission is not completed (S203 / No), returns to the process (S202) according to the state of the radio 1. When the voice transmission is completed (S203 / Yes), the state of the radio 1 is set to no transmission / reception (S204), and the following processing is performed.

On the other hand, when the state of the radio 1 is voice reception (S202 / voice reception (to itself)), it is determined whether or not voice transmission has started (S208), and transmission has started (S208 /). Yes), the state of the radio 1 is set to voice transmission (S209), and the process returns to the process (S202) according to the state of the radio 1. If the transmission is not started (S208 / No), the next process is performed after waiting until the reception of the voice from the other party is completed (S210). That is, the control unit 10 determines whether or not the voice reception is completed (S210), and if the voice reception is not finished (S210 / No), returns to the process (S202) according to the state of the radio 1. When the voice reception is completed (S210 / Yes), the state of the radio 1 is set to no transmission / reception (S211), and the following processing is performed.

The process following the process without transmission / reception (S204 or S211) is the same as that of the first embodiment. That is, according to the state of the question detection flag (S212), the call continuation timer is activated for the timer management unit 12 at a preset time or a time longer than the preset time (S213, S214). During the timer period, reception processing (S216, S221), transmission processing (S217, S220), and the like are performed.

<Effect of Embodiment 2>
In the present embodiment, when an individual call is made by designating optional signaling, the call state is canceled according to the voice recognition of the received voice signal in the receiving radio device as in the first embodiment. The time is set longer than the preset time. As a result, when the receiving side radio responds to the question from the calling side radio, even if the response is delayed a little, it can be transmitted as an individual call to the radio instead of being transmitted as a group call. .. In addition, even if the response is delayed to some extent, it is no longer necessary to transmit the optional signaling again, so that the response can be returned immediately.

Further, in the present embodiment, the radio on the transmitting side also recognizes a predetermined voice with respect to the voice signal input from the microphone. Then, similarly to the radio of the called side, even when the radio of the calling side detects, for example, a "question" that is expected to be answered by the other party, the time until the call state is canceled is set from the preset time. I tried to set it longer. As a result, when the called party's radio responds to a question from the calling party's radio, even if the response is delayed a little, the calling party's radio does not have to receive the optional signaling again. The response of the radio can be received, and it is possible to reliably communicate with the desired partner.

(Embodiment 3)
Next, the third embodiment will be described with reference to the drawings. FIG. 12 shows a configuration example of the wireless communication system according to the present embodiment. As shown in FIG. 12, the wireless communication system 100 according to the present embodiment has the same as the first embodiment, that is, the radio 1A (first radio), the radio 1B (second radio), and the radio. It is equipped with a machine 1C (third radio). In the present embodiment, as in the first embodiment, an example in which the radio 1 makes a group call and an individual call with a designated ID will be described in a digital conventional environment.

For example, as shown in FIG. 12, in a state where the radios 1A and 1C are on standby with group ID = X and the radio 1B is on standby with group ID = Y, the transmitting side radio 1A to the receiving side radio 1B Start an individual call to. When the radio 1A and the radio 1B are communicating, if another radio, the radio 1C, transmits at the same frequency, it may become a jamming radio wave. Therefore, the radio 1C has a function of receiving the frequencies used by the radios 1A and 1B and not transmitting at those frequencies.

Further, the radio 1A and the radio 1B have a function of maintaining the session for a predetermined time even when the communication is interrupted, that is, even when the PTT button is not pressed on both the radios 1A / 1B. However, in the radio before the application of the present embodiment, when the communication between the radio 1A and the radio 1B is interrupted, the radio is maintained even though the session between the radio 1A and the radio 1B is maintained. Since it is possible to transmit at the frequency at which 1A and the radio 1B communicate with each other, the communication between the radio 1A and the radio 1B is interrupted.

Therefore, in the present embodiment, after the communication between the radio 1A and the radio 1B is completed, a predetermined time is set as the call state duration (session maintenance time), and the radio 1C is wireless within this call state duration. The setting is such that transmission is not performed at the frequency at which the machine 1A and the radio 1B are communicating. As a result, since the transmission of the radio 1C is stopped in consideration of the duration of the talk state between the radio 1A and the radio 1B, it is possible to prevent the transmission that interferes within the duration of the talk state of the radio 1A and the radio 1B. it can.

<Structure of the radio device of the third embodiment>
FIG. 13 shows the configuration of the radio 1 (for example, 1C) according to the present embodiment. As shown in FIG. 13, the radio 1 according to the present embodiment has a control unit 10, a storage unit 11, a timer management unit 12, an operation unit 13, a display unit 14, and a voice, as in the first and second embodiments. It includes an input unit 15, a voice output unit 16, a wireless reception unit 17, and a wireless transmission unit 18, and also includes a monitor unit 20 in place of the voice analysis unit 19. The voice analysis unit 19 may be provided as in the first embodiment.

The monitor unit 20 has an interface for inputting a wireless signal from the wireless receiving unit 17, and monitors or acquires a wireless signal such as an audio signal of a predetermined channel received by the wireless receiving unit 17 and information on the duration of a call state. .. Further, in the present embodiment, the control unit 10 is a setting unit 10c for setting a call state duration (session maintenance time) in which the call state is maintained between the radio 1A and the radio 1B, and the set call state. It includes a limiting unit 10d and the like that limits the transmission of radio signals based on the duration. It can be said that the setting unit 10c is an estimation unit that estimates the duration of the call state of the radio 1A and the radio 1B. Further, the storage unit 11 stores the transmission guard flag and the like. Others are the same as those in the first embodiment.

<Modification example>
In the present embodiment, the radio 1A and the radio 1B may have a function of dynamically controlling the duration of the talk state of the individual call as in the first and second embodiments. In this case, the radio 1C receives the call state duration information (session maintenance time information) from the calling side radio 1A or the receiving side radio 1B, and sets the call state duration based on this information. May be good.

As an example, as in the first and second embodiments, the voice before the radio 1A or 1B releases the PTT button is analyzed, and the voice corresponds to a question, or the volume of the call is louder than a predetermined volume. , When the talk time is longer than the predetermined time, the call state duration may be set longer than the predetermined time. In this case, the radio 1C may receive information from the radio 1A or 1B that the duration of the call state has been changed, or the radio 1C also performs voice recognition of the call of the radio 1A or 1B, and the radio 1C also performs the voice recognition. 1C may estimate the duration of the call state.

Further, as another example, the radio 1A or 1B may have a function of changing the call state duration by a predetermined operation, and may transmit information that the call state duration has been changed. That is, the call state duration may be changed according to the pressing of a specific button. For example, pressing button 1 increases the session maintenance time by several seconds, and pressing button 2 shortens the session maintenance time by several seconds. You may. In this case, the radio 1C receives this change information, estimates the duration of the call state between the radio 1A and the radio 1B based on the received information, and does not transmit at the same frequency within the estimated time. To control.

14 and 15A to 15C show an example in which the radio 1C has a voice analysis unit 19 and dynamically controls the duration of the call state by recognizing the voice related to the question.

First, the operation of FIG. 14 will be described. The operations of the radios 1A and 1B are the same as those in Study Example 1 and the first embodiment. As shown in FIG. 14, in a digital conventional environment, the radios 1A and 1C stand by with group ID = X, and the radio 1B stands by with group ID = Y.

In this state, an individual call is started by designating an ID from the transmitting side radio 1A to the receiving side radio 1B (S101 to S104). Further, with the PTT button pressed, the radio 1A asks the radio 1B "Can you hear?" (S105), and the voice data is transmitted from the radio 1A to the radio 1B (S106). ..

At this time, in the present embodiment, the radio 1C, which is another radio that is not in communication, monitors the communication between the radio 1A on the transmitting side and the radio 1B on the receiving side (S401), and from the radio 1A. The voice data transmitted to the radio 1B is analyzed to recognize, for example, a "question" (S402). The radio 1C that recognizes the "question" sets the call state duration Tc of the radio 1A and the radio 1B as a period during which it does not transmit.

After that, when the speaker 2A releases the PTT button of the radio 1A and ends the transmission (S108 to S110), the radio 1C monitors the end of the voice data transmitted by the radio 1A (S403), and the voice data. From T4 where the end is detected to T5 where the set call state duration Tc has elapsed, the outgoing call is prohibited. That is, even if the speaker 2C tries to make a call by pressing the PTT button of the radio 1C during the talk state duration Tc (S404), the radio 1C does not make a call. For example, even if the PTT button is pressed, group transmission or individual transmission to radio 1A and radio 1B (or to all radios) is guarded. Then, after the call state duration Tc has elapsed, it becomes possible to make a call, and when the speaker 2C presses the PTT button of the radio 1C (S405), the radio 1C transmits a group call start (S406). The received radio 1A starts audio output (S407).

Next, the operations of FIGS. 15A to 15C will be described. Compared with the operations of the first and second embodiments, the processing (S232-S240) and the transmission prohibition operation (S241 to S242) during the voice reception to the non-self are added, and the voice analysis from the voice input unit during the voice transmission is added. The processing (S223 to S225) and the voice analysis processing (S205 to S207) from the wireless receiving unit during voice reception addressed to itself are omitted. Others are the same as those in the first and second embodiments.

First, the control unit 10 initializes the transmission guard flag of the storage unit 11 to OFF (S231). Subsequently, the control unit 10 determines the state of the radio 1 (S202), and if there is no transmission / reception (S202 / no transmission / reception), waits until transmission or reception is started. When the state of the radio 1 is during voice transmission (S202 / during voice transmission), the control unit 10 waits until the end of voice transmission (S203) and performs the next process as in the first embodiment. That is, the control unit 10 determines whether or not the voice transmission is completed (S203), and if the voice transmission is not completed (S203 / No), returns to the process (S202) according to the state of the radio 1. When the voice transmission is completed (S203 / Yes), the state of the radio 1 is set to no transmission / reception (S204), and the following processing is performed. Further, when the state of the radio 1 is receiving voice to itself (S202 / receiving voice (to itself)), the control unit 10 determines whether or not voice transmission has been started as in the second embodiment. (S208), the state of the radio 1 is set to voice transmission (S209), and the reception of voice from the other party is waited until the end (S210), and the next process is performed. That is, the control unit 10 determines whether or not the voice transmission has been started (S208), and when the transmission is started (S208 / Yes), the state of the radio 1 is set to voice transmission (S209). When transmission is not started (S208 / No), it is determined whether or not voice reception is finished (S210), and when voice reception is not finished (S210 / No), processing according to the state of the radio 1 (S202). ), When the voice reception is completed (S210 / Yes), the state of the radio 1 is set to no transmission / reception (S211), and the following processing is performed.

On the other hand, when the state of the radio 1 is receiving voice to non-self (monitoring) (S202 / receiving voice (to non-self)), the voice analysis unit 19 analyzes the voice from the radio reception unit 17. (S232). For example, the voice analysis unit 19 determines whether or not the "question" is detected by the voice addressed to the non-self, as in the first embodiment (S233). When the voice analysis unit 19 detects a "question" (S233 / Yes), the control unit 10 sets the transmission guard flag of the storage unit 11 to ON (S234). When the "question" is not detected (S233 / No), or after the transmission guard flag is ON (S234), the next process is performed.

Subsequently, the control unit 10 determines whether or not the voice transmission is started in response to the operation of the speaker 2 (S235), and when the voice transmission is started (S235 / Yes), the state of the transmission guard flag. Is determined (S236). When the transmission guard flag is ON (S236 / ON), the control unit 10 (restriction unit 10d) executes a transmission prohibition operation that does not transmit (S237). When the transmission guard flag is OFF (S236 / OFF), the state of the radio 1 is set to voice transmission (S238), and the process returns to the process (S202) according to the state of the radio 1. When the voice transmission is not started (S235 / No), and after the transmission prohibition operation (S237), the control unit 10 waits until the reception of the voice addressed to the non-self is completed (S239), and then performs the next process. Do. That is, the control unit 10 determines whether or not the voice reception is completed (S239), and if the voice reception is not finished (S239 / No), returns to the process (S202) according to the state of the radio 1. When the voice reception is completed (S239 / Yes), the state of the radio 1 is set to no transmission / reception (S240), and the following processing is performed.

Following the process without transmission / reception (S204, S211 or S240), the control unit 10 (setting unit 10c) activates the call continuation timer for the timer management unit 12 (S243). The set time of the call continuation timer may be a preset time (for example, 3 seconds), or may be a longer time (for example, 10 seconds) than the preset time according to the voice recognition.

Subsequently, the control unit 10 determines whether or not the reception of voice from the other party has started (S216), and when the reception of voice has started (S216 / Yes), the state of the radio 1 is set to voice reception. (S221), the call continuation timer is stopped (S222). Further, when the voice reception is not started (S216 / No), the control unit 10 determines whether or not the voice transmission is started in response to the operation of the speaker 2 (S217), and when the transmission is started (S217). S217 / Yes), the state of the transmission guard flag is determined (S241). When the transmission guard flag is ON (S241 / ON), the control unit 10 (restriction unit 10d) executes a transmission prohibition operation without transmitting (S242), and when the transmission guard flag is OFF (S241 / OFF), The state of the radio 1 is set to voice transmission (S220), and the call continuation timer is stopped (S222).

When the voice transmission is not started (S217 / No), and after the transmission prohibition operation (S242), the control unit 10 determines whether or not a cause for stopping the call continuation timer has occurred (S218), and the call continuation timer When the stop factor of (S218 / Yes) occurs, the call continuation timer is stopped (S222). When the stop factor of the call continuation timer does not occur (S218 / No), it is determined whether or not the call continuation timer has expired (S219), and when the call continuation timer has not expired (S219 / No), reception start processing (S219 / No) S216) and subsequent steps are repeated. Further, after the call continuation timer is stopped (S222) or when the call continuation timer expires (S219 / Yes), the transmission guard flag is initialized to OFF (S244), and processing according to the state of the radio 1 (S224). Return to S202).

<Effect of Embodiment 3>
In this embodiment, when an individual call with an ID specified is performed in a digital conventional environment, communication between the calling side and the receiving side radio is based on the call state duration information of the calling side and the called side radio. During the time when it is assumed that the call state is maintained even when the is interrupted, other radios that are not in communication are set not to make a call at the same frequency. For example, when the duration of the call state is 3 seconds, the other radios do not transmit at the same frequency for at least 3 seconds after the communication of the radio of the calling side or the receiving side is completed. As a result, it is possible to prevent the call of the transmitting side and the receiving side radio from being disturbed by another radio.

Also, if the calling and receiving radios have a function to dynamically change the call status duration, other radios will not make a call at the same frequency based on the changed call status duration information. Change the time. For example, when the duration of the call state is 4 seconds, the other radios do not transmit at the same frequency for at least 4 seconds after the communication of the radio of the calling side or the receiving side is completed. As a result, even if the duration of the call state is dynamically changed, it is possible to prevent the call of the calling side and the receiving side radio from being disturbed by another radio.

Further, the call state duration of the calling side and the called side radios is dynamically changed by recognizing the voice of the communication contents of the calling side and the called side radios. For example, in the case of voice corresponding to a question, when the volume of a call is larger than a predetermined volume, or when the call time is longer than a predetermined time, the duration of the call state is set longer than the predetermined time. As a result, it is effective to set the call state duration according to the voice of the calling side and the receiving side radio, and to prevent the call of the calling side and the receiving side radio from being interrupted by another radio. Can be prevented.

(Other embodiments)
Although the transmitting side radio is described in the first embodiment, the receiving side radio is described in the second embodiment, and other radios are described in the third embodiment, the first to third embodiments are applied to one radio. You may. The configuration of the radio in that case is shown in FIG.

As shown in FIG. 16, the radio 1 has a control unit 10, a storage unit 11, a timer management unit 12, an operation unit 13, a display unit 14, a voice input unit 15, and a voice output unit, as in the first to third embodiments. 16, a wireless receiving unit 17, a wireless transmitting unit 18, and a voice analysis unit 19 may be provided. In this case, the voice analysis unit 19 analyzes both the voice signal from the voice input unit 15 and the voice signal from the wireless reception unit 17. Further, the control unit 10 is set to set a call control unit 10a that controls the continuation of its own call state, an extension unit 10b that extends the call state continuation time, and a call state continuation time between other radios. The unit 10c includes a restriction unit 10d that limits the transmission of radio signals and the like.

The operation in this case is the same as that of the first to third embodiments.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. For example, the above embodiment is not limited to the wireless device of the commercial wireless system, and may be applied to a wireless communication device such as a general-purpose mobile phone or a smartphone.

The radio in the above-described embodiment is composed of hardware and / or software, and may be composed of one hardware or software, or may be composed of a plurality of hardware or software. Each function (each process) of the radio may be realized by a computer having a CPU, a memory, or the like. For example, a program for performing the wireless communication method according to the embodiment may be stored in the storage unit, and each function may be realized by executing the program stored in the storage unit on the CPU.

This program can be stored and supplied to a computer using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-temporary computer-readable media include magnetic recording media (eg, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, It includes a CD-R / W and a semiconductor memory (for example, a mask ROM, a PROM (Programmable ROM), an EPROM (Erasable PROM), a flash ROM, and a RAM (Random Access Memory)). The program may also be supplied to the computer by various types of transient computer readable media. Examples of temporary computer-readable media include electrical, optical, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

1, 1A, 1B, 1C Radio 2, 2A, 2B, 2C Speaker 10 Control unit 10a Call control unit 10b Extension unit 10c Setting unit 10d Restriction unit 11 Storage unit 12 Timer management unit 13 Operation unit 14 Display unit 15 Voice input Unit 16 Voice output unit 17 Wireless reception unit 18 Wireless transmission unit 19 Voice analysis unit 20 Monitor unit 100 Wireless communication system

Claims (8)

A session control unit that maintains a half-duplex session with the other party's radio during the session maintenance time,
A voice recognition unit that recognizes a predetermined voice in the session,
When the predetermined voice is recognized, the extension portion for extending the session maintenance time and the extension portion
A radio. The voice recognition unit recognizes the voice received from the other party radio in the session.
The radio according to claim 1. The extended session maintenance time is a time for maintaining the session after receiving the end of voice from the other party radio.
The radio according to claim 2. The voice recognition unit recognizes the voice transmitted to the other party radio in the session.
The radio according to claim 1. The extended session maintenance time is the time for maintaining the session after transmitting the end of the voice to the other party radio.
The radio according to claim 4. The predetermined voice is a voice including a question that is expected to be answered.
The radio according to any one of claims 1 to 5. A wireless communication system equipped with a calling side radio and a receiving side radio.
The radio on the calling side is
A session control unit that maintains a half-duplex session with the called radio during the calling session maintenance time.
A voice recognition unit that recognizes a predetermined voice to be transmitted in the session,
When the predetermined voice is recognized, the extension unit for extending the session maintenance time of the calling side and
With
The radio on the called side
A session control unit that maintains a half-duplex session with the calling radio during the called session maintenance time.
A voice recognition unit that recognizes a predetermined voice received in the session,
When the predetermined voice is recognized, the extension unit for extending the session maintenance time of the called party and the extension unit
A wireless communication system. Maintain a half-duplex session with the other radio during session maintenance time,
Recognize a given voice in the session
When the predetermined voice is recognized, the session maintenance time is extended.
Wireless communication method.

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