JP6658376B2 - Wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication system in which a plurality of temporarily grouped wireless devices communicate.

  Patent Literature 1 describes a wireless communication system in which a plurality of wireless devices including its own wireless device are temporarily grouped arbitrarily according to a situation, instead of a fixed group, and communication is performed within the group.

JP-A-11-1996029

  When a plurality of wireless devices are temporarily grouped and communicated within a group, it is required to eliminate the group without requiring a complicated operation.

  An object of the present invention is to provide a wireless communication system capable of eliminating a temporarily created group without requiring a complicated operation.

The present invention comprises: a first radio that initiates the formation of a temporary group; and one or more second radios that participate in the temporary group in response to the occurrence of the formation of the temporary group; The first and second wireless devices have a timer control unit that starts a timer for a predetermined time when the temporary group is formed, and the first and second wireless devices operate while the timer is running. When one of the radios starts a group call in the temporary group, the timer control units of the first and second radios reset the timer, respectively, and the first and second radios are reset . When the radio device ends the group call, the timer control units of the first and second radio devices restart the timer, respectively , and the first and second radio devices, when the timer expires, The temporary group To provide a radio communications system that extinguish.

  According to the wireless communication system of the present invention, a temporarily created group can be eliminated without requiring a complicated operation.

FIG. 2 is a block diagram illustrating a configuration example of a wireless device used in the wireless communication system according to the embodiment. FIG. 5 is a sequence diagram illustrating a first example of an operation of the wireless communication system according to the embodiment. FIG. 4 is a diagram illustrating an example of individual communication member information stored in a memory of a wireless device. FIG. 9 is a diagram illustrating a display example of a list of members displayed on a display unit when a member of a temporary group is selected. FIG. 5 is a diagram illustrating a first state of temporary group member information stored in a memory of a wireless device. FIG. 9 is a diagram illustrating a second state of the temporary group member information stored in the memory of the wireless device. FIG. 14 is a diagram illustrating a third state of the temporary group member information stored in the memory of the wireless device. FIG. 14 is a diagram illustrating a fourth state of the temporary group member information stored in the memory of the wireless device. It is a figure showing a group ID list when radio equipment 1B and 1C have joined a temporary group. FIG. 9 is a sequence diagram illustrating a second example of the operation of the wireless communication system according to the embodiment.

  Hereinafter, a wireless communication system according to an embodiment will be described with reference to the accompanying drawings. A plurality of members have the radio 1 shown in FIG. A member that has caused the formation of a temporary group is referred to as a group creator. A member who has joined the temporary group in response to the generation of the temporary group by the group creator is referred to as a group participant.

  First, a configuration example of a wireless device 1 used in a wireless communication system will be described with reference to FIG. In FIG. 1, the wireless device 1 includes a control unit 10, a memory 20, an operation unit 30, a display unit 40, a baseband processing unit 50, a wireless circuit unit 60, a microphone 80, a speaker 90, and an antenna ANT1 for wireless transmission and reception.

  The control unit 10 includes a message transmission control unit 11, a temporary group formation / cancellation control unit 12, a temporary group participation / cancellation control unit 13, and a timer control unit 14 as functional internal configurations. As described later, in the wireless device 1 owned by the group creator, the temporary group formation / elimination control unit 12 operates. For the wireless device 1 owned by the group participant, the temporary group participation / cancellation control unit 13 operates.

  The memory 20 stores individual communication member information and various setting information. The memory 20 may store temporary group member information. The memory 20 of the wireless device 1 owned by the group creator stores temporary group member information.

  The control unit 10 and the memory 20 may be configured by a microcomputer. The control unit 10 may be a central processing unit (CPU) of a microcomputer. The message transmission control unit 11, the temporary group formation / cancellation control unit 12, the temporary group participation / cancellation control unit 13, and the timer control unit 14 may be functions executed by software (computer programs).

  The operation unit 30 is various keys (buttons) provided on the housing of the wireless device 1. The operation unit 30 includes a PTT switch 31 and a temporary group creation key 32. The temporary group creation key 32 may be provided by assigning a temporary group creation function to any key other than the PTT switch 31 provided on the housing. Although not shown, the operation unit 30 also includes a power key for turning on or off the power, a channel selection key for selecting a channel (frequency) for communication with another wireless device 1, and cursor keys for up, down, left, and right.

  When the user presses down the PTT switch 31 and emits a sound toward the microphone 80, the control unit 10 A / D converts the sound signal output from the microphone 80 and supplies the sound data to the baseband processing unit 50. I do. The baseband processing unit 50 converts the audio data into wireless communication data for wireless transmission and supplies the wireless communication data to the wireless circuit unit 60. The wireless circuit section 60 transmits wireless communication data from the antenna ANT1 by radio waves.

  The wireless circuit unit 60 converts a received signal received from another wireless device 1 via the antenna ANT1 into wireless communication data and supplies the wireless communication data to the baseband processing unit 50. The baseband processing unit 50 supplies audio data to the control unit 10. The wireless circuit unit 60 transmits and receives wireless signals using a half-duplex communication method.

  The control unit 10 D / A converts the audio data and supplies an audio signal to the speaker 90. The speaker 90 outputs audio based on the audio signal.

  The message transmission control unit 11 controls to transmit a message to another wireless device 1. The temporary group formation / elimination control unit 12 may form a temporary group and perform control to eliminate the formed temporary group. The temporary group participation / cancellation control unit 13 may control participation in a temporary group and cancellation of participation.

  The timer control unit 14 may activate a timer when the wireless device 1 and one or more other wireless devices 1 are creating a temporary group.

  The operation of the wireless communication system will be described with reference to FIGS. 2 to 4, 5A to 5D, 6 and 7. As shown in FIG. 2, as an example, it is assumed that there are four wireless devices 1 shown in FIG. The wireless devices 1 owned by the members A to D are referred to as wireless devices 1A, 1B, 1C, and 1D, respectively. The wireless device 1 that initiates the formation of the temporary group and at least one wireless device 1 that participates in the temporary group in response to the occurrence of the formation of the temporary group constitute a wireless communication system.

  In the wireless devices 1A to 1D, terminal IDs 1 to 4 and temporary group IDs 100, 200, 300, and 400 are set, respectively. Each of the wireless devices 1A to 1D has a group ID list. As described in the group ID list, 10 is set as the group ID for the wireless devices 1A to 1D. This group ID is an ID indicating a fixed group different from the temporary group. That is, the wireless devices 1A to 1D belong to a fixed group in advance.

  Further, 100, 200, 300, and 400 are set as the group IDs for the wireless devices 1A to 1D, respectively. This group ID indicates a temporary group ID. The terminal ID, the temporary group ID, and the group ID list are stored in the memory 20 as setting information.

  Member A is trying to form a temporary group consisting of a plurality of radios 1 including radio 1A. In FIG. 2, a member A, a group creator, presses a temporary group creation key 32 in step S1.

  As shown in FIG. 3, the memory 20 stores the individual communication member information in which the wireless device 1 is associated with the terminal ID. As shown in FIG. 4, the control unit 10 causes the display unit 40 to display a list of wireless devices 1 of members that can perform individual communication based on the individual communication member information. Although only the wireless devices 1B to 1D are displayed in FIG. 4, other wireless devices 1 can be displayed using the cursor keys.

  Members capable of individual communication are not limited to the radios 1B to 1D whose group ID is 10. Even if the group ID is other than 10, if the wireless device 1 is registered in the individual communication member information so as to be able to individually communicate with the wireless device 1A, the wireless device 1 is displayed in the list of the display unit 40.

  In FIG. 2, member A selects a member who wants to participate in a temporary group in step S2. As shown in FIG. 4, it is assumed that the member A has selected the wireless devices 1B and 1C (members B and C) in step S2. The temporary group formation / elimination control unit 12 causes the memory 20 to store temporary group member information in which the wireless device 1 is associated with the terminal ID and the state, as shown in FIG. 5A.

  The temporary group member information includes a terminal ID which is identification information for identifying the wireless device 1 of a group participant included in the temporary group. When the temporary group member information is created, nothing is stored in the status item.

  At step S3, the member A issues a temporary group ID registration request to the wireless devices 1B and 1C by performing a predetermined operation. In step S4, the message transmission control unit 11 of the wireless device 1A controls to transmit a temporary group ID registration request message (hereinafter, simply referred to as a registration request message) to the wireless device 1B. Control is performed to transmit a message to the wireless device 1C.

  Then, the temporary group formation / elimination control unit 12 of the wireless device 1A requests the wireless devices 1B and 1C to register a temporary group ID in the item of the state of the temporary group member information, as shown in FIG. 5B. Is stored, indicating that the request is being made.

  In step S6, the message transmission control unit 11 of the wireless device 1B transmits a temporary group ID registration completion message (hereinafter, abbreviated as a registration completion message) indicating that the registration of the temporary group ID has been completed to the wireless device 1A. Control. In step S7, the message transmission control unit 11 of the wireless device 1C controls to transmit a registration completion message to the wireless device 1A.

  When the wireless device 1A receives the registration completion message from the wireless devices 1B and 1C, the temporary group formation / elimination control unit 12 of the wireless device 1A adds the wireless device to the status item of the temporary group member information as shown in FIG. 5C. Data indicating “registration” indicating that 1B and 1C have registered the temporary group ID is stored. Thereby, the control unit 10 of the wireless device 1A can recognize the wireless device 1 participating in the temporary group based on the temporary group member information shown in FIG. 5C.

  As shown in FIG. 6, the temporary group participation / cancellation control unit 13 of each of the wireless devices 1B and 1C adds 100, which is the temporary group ID of the wireless device 1A, to the group ID list. Thereby, the control units 10 of the wireless devices 1B and 1C can recognize that they are participating in the temporary group generated by the wireless device 1A (member A). There is no change in the group ID lists of the wireless devices 1A and 1D.

  When the wireless devices 1A to 1C are forming a temporary group, the control unit 10 preferably causes the display unit 40 to display a character or an image indicating that a temporary group is being formed.

  The timer control unit 14 of the wireless device 1B activates the timer TMb for a predetermined time at a time t1 immediately after transmitting the registration completion message to the wireless device 1A. The timer control unit 14 of the wireless device 1A activates the timer TMa for a predetermined time at time t2 immediately after receiving the registration completion message from the wireless device 1B.

  The timer control unit 14 of the wireless device 1C activates the timer TMc for a predetermined time at time t3 immediately after transmitting the registration completion message to the wireless device 1A. The wireless device 1A receives the registration completion message from the wireless device 1C, although the timer TMa is running. The timer control unit 14 of the wireless device 1A restarts the timer TMa at time t4 immediately after receiving the registration completion message.

  The timing at which the wireless device 1B or 1C transmits the registration completion message to the wireless device 1A and the timing at which the wireless device 1A receives the registration completion message can be regarded as the timing at which the temporary group is formed. When the temporary group is formed, the wireless devices 1A to 1C activate timers TMa to TMc.

  The predetermined times of the timers TMa to TMc are all the same, for example, 10 seconds. Each member can change the time of the timer using the operation unit 30. The time of the timer is stored in the memory 20 as setting information.

  Timer TMb expires at time t5. The temporary group participation / cancellation control unit 13 of the wireless device 1B deletes the temporary group ID 100 of the wireless device 1A from the group ID list and cancels participation in the temporary group. Similarly, timer TMc expires at time t6. The temporary group participation / cancellation control unit 13 of the wireless device 1C deletes the temporary group ID 100 of the wireless device 1A from the group ID list and cancels participation in the temporary group.

  Timer TMa expires at time t7. As shown in FIG. 5D, the temporary group formation / cancellation control unit 12 of the wireless device 1A indicates that the wireless devices 1B and 1C are released from the members of the temporary group in the item of the status of the temporary group member information. The data indicating “during release” is stored. As a result, the temporary group created by the group creator is temporarily canceled.

  The temporary group is canceled when all the group participants have stopped participating in the temporary group.

  It is assumed that the member A is trying to form a temporary group again with members B and C (radio devices 1B and 1C) which are the same members selected in FIG. When the member A presses the temporary group creation key 32 for a long time, the temporary group formation / cancellation control unit 12 of the wireless device 1A transmits to the wireless devices 1B and 1C based on the temporary group member information shown in FIG. In response to this, a temporary group ID registration request is issued, and a registration request message is transmitted to the wireless devices 1B and 1C as in steps S4 and S5.

  Long pressing of the temporary group creation key 32 is an example of an instruction to form the same temporary group after the temporary group is canceled.

  As shown in FIG. 5D, even if the temporary group is canceled, the temporary group member information holds the identification information indicating the group participant before the temporary group is canceled. The same temporary group can be formed again without performing the above again.

  Next, referring to FIG. 7, when the member A presses the PTT switch 31 and a group call is made between the members A to C in a state where the timers TMa to TMc are activated before the time t5 in FIG. Will be described.

  In FIG. 7, the member A presses the PTT switch 31 of the wireless device 1A in step S11 with the timers TMa to TMc running. Then, in steps S12 and S13, the wireless device 1A starts a temporary group call and transmits an audio signal to the wireless devices 1B and 1C. If the member A emits a voice toward the microphone 80, the transmitted voice signal includes an actual voice signal, but if the member A does not emit a voice, the transmitted voice signal becomes a substantially silent voice signal. .

  The timer control unit 14 of each of the wireless devices 1A to 1C resets the timers TMa to TMc at time t11 immediately after starting the temporary group call.

  The member A opens the PTT switch 31 in step S14. Then, the wireless device 1A ends the temporary group call in steps S15 and S16. During a period from when the PTT switch 31 is pressed to when the PTT switch 31 is released, the audio signal of the temporary group call is transmitted from the wireless device 1A to the wireless devices 1B and 1C.

  The timer control unit 14 of each of the wireless devices 1A to 1C restarts the timers TMa to TMc at time t12 immediately after ending the temporary group call. The timers TMa to TMc expire at time t13 after the elapse of the above-described predetermined time. When the timers TMa to TMc expire, the temporary group is also canceled.

  FIG. 7 shows a case where the member A presses the PTT switch 31. Similarly, when the member B or C presses the PTT switch 31, the timer control unit 14 of the wireless devices 1A to 1C similarly operates the timer TMa. ~ TMc is reset.

  When any member presses the PTT switch 31 to start a temporary group call, the timers TMa to TMc are reset, so that the temporary group call can be completed without interruption.

  After the temporary group is formed, the wireless device on the transmitting side when the PTT switch 31 is pressed is the transmitting wireless device, and the wireless device on the receiving side receiving the signal transmitted from the wireless device when the PTT switch 31 is pressed. Is the receiver radio. The transmitting-side wireless device may be any of the wireless devices 1A to 1C, and the receiving-side wireless device is a wireless device other than the transmitting wireless device when any of the wireless devices 1A to 1C is transmitting. .

  After the start of the temporary group call, the transmission-side radio resets the timer when transmission starts, and restarts the timer when transmission ends. Here, the transmitting-side wireless device is referred to as a wireless device 1A. The wireless device 1A resets the timer TMa when the PTT switch 31 is pressed. When the PTT switch is opened, the wireless device 1A restarts the timer TMa.

  After the start of the temporary group call, the receiving wireless device resets the timer when receiving of the transmission signal from the transmitting wireless device is started. Also, the receiving wireless device restarts the timer upon completion of receiving the transmission signal from the transmitting wireless device. Here, the receiving-side wireless devices are a wireless device 1B and a wireless device 1C. The radio 1B and the radio 1C reset the timer TMb, and the radio 1C reset the timer TMc, triggered by detection of the transmission signal from the radio 1A.

  When the wireless device 1B and the wireless device 1B cannot detect the transmission signal from the wireless device 1A, the wireless device 1B restarts the timer TMb, and the wireless device 1C restarts the timer TMc. The transmission signal may be detected either when the signal strength is equal to or higher than a predetermined level or when a temporary group ID included in the transmission signal is detected.

  As described above, any one of the members of the temporary group transmits a signal before the timer expires, so that the temporary group is maintained, and the temporary group can be quickly canceled when the timer expires.

  When the group creator operates the channel selection key to change the channel, the group creator's radio 1 transmits a message indicating the end of the temporary group to the group communicator 1 It is preferable that the wireless device 1 cancel the participation in the temporary group.

  Similarly, when the group creator presses the power key to turn off the power of the group maker's wireless device 1, a message indicating the end of the temporary group is transmitted to the group participant's wireless device 1, and It is preferable that the wireless device 1 cancel the participation in the temporary group.

  The present invention is not limited to the embodiment described above, and can be variously modified without departing from the gist of the present invention.

1, 1A, 1B, 1C, 1D radio 11 Message transmission control unit 12 Temporary group formation / elimination control unit (temporary group formation control unit)
13 Temporary group participation / release control unit 14 Timer control unit

Claims (3)

A first radio that initiates the formation of a temporary group;
One or more second radios joining the temporary group in response to the initiation of the formation of the temporary group;
With
The first and second wireless devices have a timer control unit that starts a timer for a predetermined time when the temporary group is formed,
When any one of the first and second radios starts a group call in the temporary group while the timer is running, the timer of the first and second radios The control unit resets the timer, and when the first and second radios end the group call, the timer control units of the first and second radios respectively restart the timers,
The first and second radios cancel the temporary group when the timer expires.
Radio communications system. The timer control unit of the transmitting-side radio is a side radios to transmit resets the timer to send start the machine in a state in which the timer of the transmitting-side radio is activated, the opportunity of transmission end Restart the timer,
The timer control unit of the reception side radio is a side radios to receive resets the timer to machine the reception start in a state where the timer of the receiving radio is activated, the opportunity of receiving ends Restart the timer
The wireless communication system according to 請 Motomeko 1. The first wireless device has a temporary group formation control unit that forms the temporary group by storing identification information indicating a second wireless device included in the temporary group in a memory,
If an instruction to form the same temporary group is given to the first wireless device after the temporary group is canceled, the temporary group formation control unit performs the same operation based on the identification information stored in the memory. Form a temporary group
The wireless communication system according to 請 Motomeko 1 or 2.

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