JPH07162959A - Mobile radio equipment - Google Patents

Abstract

PURPOSE:To provide the mobile radio equipment for a radio system provided with both the functions of duplex operation and simultaneous multi-address communication by constituting a mobile station which normally performs duplex operation and performs semi-duplex operation in a press talk system corresponding to designated data. CONSTITUTION:Switching to data/voice is controlled by a control part 7 based on analyzed data transmitted from a base station. Concerning reception control, call incoming is outputted by a ring-base tone in the case of the duplex operation, and a voice ringback tone is outputted from a microphone/speaker part 10 in the case of semi-duplex operation. At the time of data transmission, the data edited by the control part 7 are encoded by a transmission signal switching part 6 and transmitted by starting the transmission at an OR circuit 11. At the time of voice transmission, a gate signal to be turned off in a duplex operation mode or to be turned on in a semi-duplex operation mode is applied from the control part 7 to an AND circuit 12, and the ON/OFF of a press talk signal to be impressed from the microphone/ speaker part 10 to the AND circuit 12 is controlled. Thus, both the individual communication of an automobile telephone and the simultaneous multi-address communication of a general radio equipment can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile wireless device used in a communication system composed of a telephone line and a wireless line, and more particularly to an MCA type mobile wireless device.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram of a mobile telephone mobile station for communication by connecting a telephone line. The car telephone is designed to perform duplex communication, and the reception signal captured by the antenna and supplied to the reception unit 3 via the antenna duplexer 1 is demodulated there, and the reception signal switching unit 5 receives data and voice signals. Output by switching. That is, the data is decoded and supplied to the control unit 7, and the voice is sent to the handset 8 after being subjected to predetermined audio signal processing.

At the time of data transmission, the data edited by the control unit 7 is encoded by the transmission signal switching unit 6 and then transmitted via the transmission unit 4 and the antenna duplexer 1. Handset 8 for voice transmission
After being subjected to predetermined audio signal processing by the transmission signal switching unit 6, the voice is transmitted via the transmission unit 4 and the antenna duplexer 1. The switching is instructed by the control unit 7. In the case of a car phone, a duplex system is adopted which also receives while transmitting.

FIG. 5 is a block diagram of a press-talk type radio that performs simplex communication, in which a signal captured by an antenna and supplied to a receiving section 3 through an antenna switching device 2 is demodulated there. At the time of data reception, the received signal switching unit 5 decodes the data and supplies it to the control unit 7 for analysis. At the time of voice reception, the received signal switching unit 5 performs predetermined audio signal processing, and then the transmission / reception switching circuit 9 is operated. Through,
It is supplied to the microphone / speaker unit 10.

When transmitting data, the transmission signal switching unit 6 encodes the data edited by the control unit 7, and the OR circuit 11 activates the transmitting unit 4 to transmit the data via the antenna switching unit 2. At the time of voice transmission, the voice from the microphone / speaker unit 10 is sent to the transmission / reception switching circuit 9, the transmission signal switching unit 6 performs a predetermined audio signal processing, and then the OR circuit 11 starts transmission, and the transmission unit 4 and the antenna are switched. Transmit via device 2.

[0006]

However, such a conventional device has a problem that when it is used in a mobile telephone mobile station, it is possible to make an individual call but not a simultaneous broadcast call. There is a problem that the station cannot make duplex calls.

The present invention has been made in view of the above circumstances, and is intended to realize a mobile wireless device of a wireless system having both a duplex function and a simultaneous broadcast function.

[0008]

In order to solve such a problem, the present invention analyzes the data broadcast by the radio channel via the base station from the control station of the fixed station equipment, and normally uses the instruction data to decode the data. In addition to configuring a mobile station that performs a communication operation and performs a semi-duplex operation by the press talk method depending on the specified data, the control station connects the mobile station and the telephone or terminal of the fixed station equipment 1: 1 during the duplex operation. During semi-duplex operation, a fixed-line equipment telephone or terminal and a duplex mobile station are connected at 1: n to enable simultaneous broadcast from the fixed station side to the mobile station side. Connection is made so that the signal transmitted by the mobile station by the press talk system can be monitored by the fixed station and other mobile stations.

[0009]

The dial signals from the telephone and the terminal are analyzed, and duplex or semi-duplex control is performed according to the analysis result.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The radio wave of the base station 16 in FIG. 2 is received by the mobile station shown in the block diagram of FIG. 1, supplied to the receiving unit 3 supplied via the antenna duplexer 1, and demodulated. The demodulated signal is decoded at the reception signal switching unit 5 when data is received and analyzed by the control unit 7, and the voice is subjected to predetermined audio signal processing at the reception signal switching unit 5 and then transmitted / received via the transmission / reception switching circuit 9. It is sent to the microphone / speaker unit 10.

Switching between data and voice is controlled by the controller 7 based on the analyzed data, and this data is sent from the base station 16 in FIG. That is, the control station 15 determines a dial signal from the telephone 13 or the terminal device 14, and depending on the determination result of the content of the dial signal, the duplex mode in which the telephone device 13, the terminal device 14 and the mobile station are connected at a ratio of 1: 1, This is for determining whether the mode is a half-duplex mode in which the mobile station is connected to the mobile station at 1: n and sends predetermined data to the mobile station.

The reception control is almost the same in the duplex / semi-duplex mode. In the duplex mode, an incoming call is output as a ring tone, and in the semi-duplex mode, a voice ring tone is output from the microphone / speaker unit 10. The output is different.

At the time of data transmission, the control unit 7 controls the transmission signal switching unit 6 so that the data edited by the control unit 7 is encoded by the transmission signal switching unit 6 and the OR circuit 11 starts transmission to start the transmission unit 4, Transmit via the antenna duplexer 1. At the time of voice transmission, depending on whether the mode specified at that time is the duplex mode or the half duplex mode, the control unit 7 gives a gate signal to the AND circuit 12 to turn it off in the duplex mode and on in the half duplex mode. Microphone / speaker unit 10
ON the press talk signal applied to the AND circuit 12 from
Turn off.

The control applied from the AND circuit 12 to the transmission unit 4 via the OR circuit 11 is continuous transmission in the duplex mode, and transmission control in which the transmission state is set when the press talk signal is supplied in the semi-duplex mode.

FIG. 2 shows communication in duplex mode,
It shows a state in which one mobile station is bidirectionally communicating with one telephone set 13 or terminal 14 via the base station 16 and the control station 15.

FIG. 3 shows communication in the semi-duplex mode. Communication for the mobile station from the telephone 13 or the terminal 14 via the control station 15 and the base station 16 is received by the mobile stations all at once. The transmission signal accompanying the press talk signal from the mobile station such as the second mobile station in the figure is the telephone 13
In addition to being received by the terminal device 14 and returned by the control station 15, it is also received by other mobile stations. In this way, the convenience of both the mobile station of FIG. 1 and duplex or semi-duplex is realized.

[0017]

As described above, according to the present invention, the operation mode can be switched according to the data signal instructing the duplex or the semi-duplex from the fixed station equipment. A mobile station with a function for press talk calls and a control station that outputs duplex / semi-duplex data can realize both individual communication of car telephones and simultaneous broadcast of general radios, and a self-employed MCA system It has an effect that the function of can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram for explaining a duplex operation.

FIG. 3 is a diagram for explaining a simultaneous broadcast operation.

FIG. 4 is a block diagram of a device that performs a duplex operation of a conventional device.

FIG. 5 is a block diagram of a device that performs a semi-duplex operation of a conventional device.

[Explanation of symbols]

 1 Antenna Duplexer 2 Antenna Switcher 3 Receiver 5 Received Signal Switcher 6 Transmitter 7 Controller 8 Handset 9 Handset Circuit 10 Microphone / Speaker 11 OR Circuit 13 Telephone 14 Terminal 15 Control Station

Front page continuation (72) Inventor Akito Ichikawa 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. Within

Claims (1)

[Claims] 1. In a mobile wireless device configured by connecting a telephone / terminal to a mobile station via a control station and a base station, a dial signal from the telephone or the terminal is analyzed by the control station, and correspondingly, individually. The connection data or the broadcast connection data is sent to the mobile station. When the connection data is the individual connection data, the mobile station switches to the call channel and continuously operates the transmission / reception unit to enable a call by duplex operation. For the broadcast connection data, the receiving unit is continuously operated after switching to the call channel, but the transmission operation and the press talk switch are controlled by adding conditions such that they are valid only during this transmission, and the press talk method by the semi-duplex operation The control station establishes a line connection that enables simultaneous calls from this mobile station to telephones / terminals and other mobile stations by enabling the operation of the wireless device Mobile radio in a mobile communication system.