JP2947753B2 - Multi-channel wireless telephone system group intercom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a group communication device for a multi-channel radio telephone system, and more particularly to a group of a multi-channel radio telephone system for performing voice group communication using a plurality of child telephones for one parent telephone. It relates to a communication device.

[0002]

2. Description of the Related Art Conventionally, this type of group communication device includes:
For example, a group call has been made with a telephone having N (N is a natural number of 1 or more) child telephones of a mobile station for one parent telephone connected to an extension telephone network. When making such a group call, the base station transmits data of the group call command number dialed by the parent telephone to the mobile station, and the child telephone of the mobile station shifts to the group telephone call state.

[0003] After shifting to such a group call state, the mobile station which is turned on and put into operation can join the group call. A mobile station that cannot receive a group call command signal, such as a mobile station that has shifted, cannot join a group call as a mobile station.

[0004] Therefore, in the conventional group communication device, in order to perform a group call including the mobile station that is powered on after the mobile station is shifted to the group communication state,
After terminating the group call once with the master telephone, it is necessary to dial the group call command signal again from the slave telephone of the mobile station.

As a specific example of such a group communication device, there is one described in Japanese Patent Application Laid-Open No. 7-1147. In the group communication device described in this publication, a control channel is always transmitted for group communication subscription to perform group communication.

[0006]

However, in the conventional group communication apparatus, every time the power of the slave phone of a new mobile station is turned on or the mobile station that has moved from another zone enters the operating state, the master phone side operates. It is necessary to dial the group call command signal again after the end of the call, which causes a problem that the service to the operator is deteriorated.

[0007] Also, in a later-generation mobile station child telephone,
In some cases, it is not possible or difficult to join the group call, and there has been a problem that the service of the operator of the group call cannot be sufficiently provided.

Further, in the group communication apparatus described in Japanese Patent Application Laid-Open No. H7-111147, a control channel must be constantly transmitted for group communication subscription, which causes an increase in useless control channel traffic. There was also a problem.

[0009] An object of the present invention is to newly join a group call without performing an end call operation even if the operator is not particularly conscious.
It is an object of the present invention to provide a communication device of a multi-channel wireless telephone system which can improve the service at the time of a telephone call by an operator.

[0010] Another object of the present invention is to enable even a late-stage mobile station to automatically join a group call and to smoothly perform a group call of the mobile station.

Still another object of the present invention is to prevent unnecessary increase in traffic.

[0012]

As a means for solving the above problems, a multi-channel radio telephone system according to the present invention comprises a master telephone for dialing a command number for making a group call, and a command from the master telephone. A control station device for transmitting a number through the exchange to detect a group call end signal indicating the end of the call; and a control station device for receiving a signal corresponding to the dial number and controlling a group call state. A mobile station device that performs a group call with the parent telephone via a base station device that outputs a group call end signal when the mobile station device is turned on.
Automatically join a group call by detecting the registration number at the time
By sending the signal again, you do not need to
Is also able to join a new group call.
It is a sign .

Therefore, according to the present invention, only when a registration signal of a mobile station is detected, a group call subscription signal is transmitted,
The time when the control channel is used is used only for the time necessary for the call, so that unnecessary traffic increase can be prevented.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A group communication device of a multi-channel radio telephone system according to the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of a wireless telephone system according to an embodiment of the present invention. In FIG. 1, a telephone 1 is a parent telephone. The telephone 1 dials a command number 100 for making a group call. The command (dial) number 100 is transmitted to the control station device 3 via the exchange 2.

When the control station device 3 receives the signal 102 corresponding to the dial number, it shifts to a group call state,
A group call can be made between the telephone 1 and the mobile station devices 5 and 6 via the base station 4.

For example, when the call is terminated, when the telephone 1 is hooked down, the exchange information is transmitted from the exchange 2 to the control station 3. When the control station device 3 detects the group call end signal 104 indicating the end of the call, the control station device 3 sends the group call end signal 104 to the mobile station device 5 via the base station device 4. Accordingly, the mobile station device 5 receives the end signal 104 and ends the call, and shifts to the standby state.

FIG. 2 is a sequence diagram showing processing from registration in a mobile station of a wireless telephone system to a call termination using a group call command and a call channel in one embodiment of the present invention.

In the mobile station 5, for example, when the power of the mobile telephone is turned on (ON), the base station 4 sends a group call command signal 106. The mobile station 5 receives the group call command signal 106, makes a group call state, and can use the call channel 108 to make a group call of N child phones to one parent telephone.

At the time of a call termination, a call termination signal is transmitted from the base station 4, so that the mobile station 5 receives the signal and shifts to a so-called standby state. Since the mobile station 6, for example, the power of the mobile phone of the mobile station 6 is turned on (ON) after the transmission of the group call command signal, the group call command signal 106 cannot be received. Cannot transition to state.

FIG. 3 is a flow chart showing processing from registration of a mobile station to which the power of the mobile telephone is turned on to re-instruction of group call and call from the call using the call channel to call termination in one embodiment of the present invention. FIG.

The mobile telephone of the mobile station 6 is turned on (ON) after the group call command signal 106 for the mobile telephone of the mobile station 5 is transmitted. Thereby, the base station 5
, A registration signal 110 is sent out, and a standby state is set. Since the base station 4 has already transmitted the group call command signal 106 to the mobile station 5 and the state is continuing, the base station 4 detects the registration signal 110 of the mobile station 6 and Again, group call command signal 112 is transmitted. The mobile station 6 can receive the group call command signal 112, enter a group call state, and subscribe to the group call of N mobile phones with respect to the parent telephone 1 performed by the mobile station 5. At the end of the call, the base station 4 transmits a call termination signal, so that the mobile stations 5 and 6 receive the signal and shift to a standby state.

Although not shown in FIG. 3, other mobile stations (not shown) also transmit group communication command signals each time the power is turned on. The base station 4 retransmits the group call command only when detecting the registration number of a mobile station having the same group number, and when detecting the number of a mobile station having another group number. Does not transmit the group call command signal.

[0023]

As described above, the group call apparatus of the multi-channel radio telephone system of the present invention detects the registration number of the mobile station and automatically transmits the group call join signal again to terminate the call. It is possible to newly join a group call without performing a talk operation.

Further, by not sending the subscription signal at regular intervals, it is possible to prevent unnecessary increase in traffic on the control channel.

For this reason, the operator does not need to be particularly conscious and does not perform any special operation as a mobile station later.
Since it is possible to join the group call one after another, it is possible to achieve an effect that the user service can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram for explaining a configuration of an embodiment of a group communication device of a multi-channel wireless telephone system according to the present invention.

FIG. 2 is a sequence diagram from registration in a mobile station of a group communication device of the wireless telephone system shown in FIG. 1 to communication to end using a group communication command and a communication channel.

FIG. 3 is a diagram illustrating a process from registration of a mobile station to which the power of the mobile telephone is later turned on to re-instruction of a group call and a call using a call channel to a call end in the group call device of the wireless telephone system shown in FIG. It is a sequence diagram.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 master telephone 2 exchange 3 control station apparatus 4 base station apparatus 5 mobile station apparatus 6 mobile station apparatus 100 dial number 102 dial signal 104, 106 group call end signal 105 control channel 108 call channel 110 registration signal

Claims (3)

(57) [Claims] A master telephone for dialing a command number for performing a group call, and a command number from the master telephone for transmitting a command number from the master telephone via an exchange to detect a group call end signal indicating an end of the call. A control station device for controlling, and a base station device for outputting the group call end signal when the control station device receives a signal corresponding to a dial number and shifts to a group call state. A mobile station device that performs a group call between the mobile station device and a registration number when the power of the mobile station device is turned on.
Signal and automatically resend the group call subscription signal
This allows you to add a new group without
A group communication device for a multi-channel wireless telephone system, which can subscribe to a call. 2. The power supply of the mobile station device is turned on, and the group communication command signal is transmitted from the base station device. The mobile station device receives the group communication command signal and enters a group communication state. 2. The group communication device according to claim 1, wherein, when transmitting an end signal from the device, the mobile station device receives the end signal and shifts to a standby state. 3. A power supply is turned on after transmitting a group call command signal to the mobile station apparatus, and a registration signal is transmitted to the base station apparatus so as to be in a standby state. On the other hand, a group call command signal is transmitted again, and the mobile station apparatus receives the group call command signal, enters a group call state, transmits a call end signal from the base station apparatus, and outputs the call end signal in the mobile station apparatus. Receiving and receiving a standby state,
The group communication device of the multi-channel wireless telephone system according to claim 1.