JPS63105534A - Radio communication system - Google Patents

Abstract

PURPOSE:To make a system constitution inexpensive by supervising a talking state and the state of equipments at a terminal equipment side by a remote controller at a radio equipment side in a mobile radio communication system and controlling a terminal equipment during communication and a terminal equipment not in communication distinguishingly so as to prevent the reproduction of undersired voice from terminal equipments not in communication. CONSTITUTION:The remote controller 3 at the radio equipment side recognizes which terminal equipment among plural terminal equipments A - M makes a call to other station or which terminal equipment replies at first a call from other station from the state of a press-key 43. Thus, a communication enable data code is sent only to the terminal equipment to permit the communication and a communication disable data code is sent to other terminal equipments to inhibit the communication afterward. Thus, unnecessary reproduction of received voice from the other terminal equipments is prevented. Moreover, each mobile station is provided additionally with a selective call function and it is not required to add a selective call function to the terminal equipments A - M.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wireless communication system in which one station has a plurality of communication terminals, and in particular, the present invention relates to a wireless communication system in which one station has a plurality of communication terminals, and in particular, the present invention relates to a wireless communication system in which one station has a plurality of communication terminals. This is an attempt to prevent regeneration.

[Conventional technology]

A mobile radio communication system such as MCA includes one command station 1 and a plurality of mobile stations a, as shown in FIG.

It consists of stations b, c, . . . , and each station can communicate through wireless lines with the same frequency. The command station 1 consists of a radio and its remote controller, and has multiple call terminals A-
When M is connected, only one terminal communicates with the mobile station.

However, since the audio received from the mobile station is also played back on other terminals, it is necessary to turn down the volume on terminals that are not communicating to eliminate unnecessary audio. However, it is inconvenient to do this each time, so each mobile station a, b,
A selective calling function is added to C, . . ., and a selective calling function is added to each terminal A, B, C, . There is a method to do this. With this method, it is possible to disable other terminals from making calls, which prevents the playback of unnecessary audio, but this increases costs (especially since there are a large number of mobile stations) and complicates operations on the mobile station side. There are also drawbacks that can be dangerous while driving.

[Problem that the invention seeks to solve]

The present invention attempts to solve the above-mentioned problems by monitoring the call status and equipment status of the terminal on the remote controller side, and distinguishing and controlling terminals that are on a call and terminals that are not on a call. be.

[Means for solving problems]

The present invention provides a wireless communication system in which a single wireless device is shared by a plurality of terminals, and each terminal can monopolize the wireless device by exchanging control data with a remote controller on the wireless device side. When the remote controller recognizes the terminal that made a call to another station or answered a call from another station first, it sends a call-enabled data code only to that terminal, making it possible to make a call, and also sends a call-ready data code to that terminal. This system is characterized in that a call-disabled data code is sent to the station to prohibit transmission, and control is performed to prohibit the reproduction of audio received from the other station.

[Operation] The remote controller can determine which terminal has made a call to another station, or which terminal has responded first to a call (call request) from another station, from the state of the press key.

Therefore, after that, by sending call-enabled data to only this terminal to permit calls, and sending call-disabled data to other terminals to prohibit calls, it is possible to prevent unnecessary reproduction of received audio by other terminals.

〔Example〕

FIG. 1 is a configuration diagram showing an embodiment of the present invention, in which 2 is a radio of a command station 1, 3 is its remote controller, and 4 is a terminal (for example, an A
). The radio device 2 includes an antenna 21 for transmitting and receiving, a transmitting section 22, a receiving section 23, and a control section 24. The transmitting section 22 modulates and transmits the transmitted audio signal, and the receiving section 23 converts the received audio signal from the received signal. make a comeback. The remote controller 3 includes interfaces 31A to 31M corresponding to each terminal, a distributor for received audio signals, a mixer 32 for transmitted audio signals, and a control section 33. The control unit 33 is the control unit 24 of the radio device 2
sends a control signal for the transmitting set or receiving set to
Upon receiving this, the control unit 24 puts the radio device 2 into a transmitting state or a receiving state. The terminal 4 includes a speaker 41, a microphone 42, a press key 43, a control section 44, etc., and the ON10FF state of the press key 43 is monitored by the control section 44, and the state is sent to the control section of the remote controller 3 as a press ON10FF code. Given to 33. The control unit 44 also performs display control, etc., but in this example, it performs mute control for transmission and reception. These are performed at the terminal that received the call-disabled data. At the same time, press key input prohibition control is also performed.

In the following, operations centering on terminal A will be explained separately for calling and receiving calls. When press key 43 is pressed on terminal A, remote controller 3
sends out a transmission cent and puts the radio 2 into the transmitting state. At this time, data for which communication is possible is transmitted for terminal A, and data for which communication is prohibited is transmitted for other terminals B, C, . . . . As a result, terminals B, C,...
Then, reception is muted, transmission presses are prohibited, and calls are not possible. Terminal A is now able to talk to the desired mobile station, and in this state the call limit time (1 in MCA)
The remote controller 3 will continue to operate until the number of minutes (minutes) is exceeded, a call cancellation data code is sent from terminal A, or the reception radio waves are interrupted.
Sends a call-disabled data code to the call-disabled state to release the call-disabled state.

The above is when a call is made from terminal A, but when a call is received from a mobile station, the process is as follows. When a mobile station makes a call request, the request (voice) can be confirmed by all terminals A to M. However, for example, when the terminal responds (presses the press key 43) for the first time, the process is the same as when making a call, and the non-responsive terminal B
-M is sent a call-disabled data code, and only terminal A is allowed to make calls.

[Effects of the Invention] As described above, according to the present invention, only one of the plurality of terminals can make a call and the rest cannot make a call without providing a selective calling function, so that unnecessary audio can be played back on non-calling terminals. can be prevented, and the system configuration can be made at low cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram of a wireless communication system. In the figure, 1 is a command station, 2 is its radio, 3 is a radio remote controller, 4 is a terminal, 22 is a transmitter, 23 is a receiver, 24
, 33 and 44 are a control unit, 41 is a speaker, 42 is a microphone, and 43 is a press key. Applicant Fujitsu Ten Ltd. Representative Patent Attorney Aoyagi Minoru Line” Diagram of the system’s configuration Part 2

Claims (1)

[Claims] In a wireless communication system in which multiple terminals share one radio, and each terminal can monopolize the radio by exchanging control data with the remote controller on the radio, it is possible to communicate with other stations. When the remote controller recognizes the terminal that made the call or answered the call from another station first, it sends a call-enabled data code to only that terminal, making it possible to talk, and disabling calls to other terminals. A wireless communication system characterized by transmitting a data code to prohibit transmission and controlling to prohibit the reproduction of received audio from the other station.