JPH10126305A - Radio equipment with repeating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable all of mobile stations and base stations to grasp the contents of all calls by providing base station radio equipment for a reception wave fR with a reception part of a transmission wave fT and transmitting the receive wave fR of an opposite mobile station at fT, as it is. SOLUTION: An RF signal inputted to an antenna 1 at a receive frequency fR passes through a common unit part 2 and is sent to a reception part 9. A speech signal demodulated at the reception part 9 is passed through a repeating part 10 and then a control part 5, and sent out of a speaker 6 as a speech output. An RF signal inputted to the antenna 1 at a receive frequency fT, on the other hand, passes through the common unit part 2 and is sent to the reception part 9. A speech signal which is demodulated here is sent to the repeating part 10 and the control part 5 by opening a speech gate circuit with a squelch signal sent out of the reception part 9 at the same time, and then sent out of the speaker 6 as a speech output. Here, a handset 8 is put off the hook and then the repeating part 10 operates to send the demodulated output from the reception part 9 to a transmission part 3, so that it is sent as a transmission output from the shared unit part 2 through the antenna 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semi-duplex base station radio.

[0002]

2. Description of the Related Art A conventional radio will be described with reference to FIG. In the figure, 1 is an antenna, f _T is a transmission frequency, f _R is a reception frequency, 2 is a duplexer, 3 is a transmitter, 4 is a receiver, 5 is a receiver,
Denotes a control unit, 6 denotes a speaker, 7 denotes a press switch, and 8 denotes a handset. In FIG. 2, an RF signal input at a reception frequency of f _R passes through the duplexer unit 2, is converted into an audio signal by the reception unit 4, passes through the control unit 5, and is output from the speaker 6 as audio output. . The operator holds the handset 8 and speaks while pressing the press switch 7. The microphone signal from the handset (T) side is amplified by the control unit 5, sent to the transmission unit 3 and modulated, sent to the duplexer unit 2 as a transmission frequency of f _T , sent out of the antenna 1 to the outside, The frequency becomes the reception frequency of the mobile station, and the mobile station goes through the same operation as described above to produce a voice output on the mobile station side, so that it is possible to receive speech. However, when there is no problem in a normal call, if another mobile station monitors the sound, the sound of the base station can be monitored but the sound of the mobile station during the call cannot be monitored. Also, in the same other base station as this apparatus, the sound of the mobile station during a call can be monitored, but the sound of this apparatus cannot be monitored.

[0003]

As described above, the conventional 2
In the wave half-duplex radio, since the radio frequency of the transmission wave and the reception wave are different, only one of the calls can be monitored. Therefore, when the content of the call is monitored by another station, it is difficult to grasp the content of the call.

[0004]

In order to solve the above-mentioned problems, the present invention provides a base station radio for transmitting a transmission wave f _T and a reception wave f _R by providing a receiving unit for f _T , so that either one of them is always available. So that the user's own phone can talk, and
And _R to f _T and the relay, the transmission of the own device as f _T
In in that configured so as to transmit, whereby on is understandable that the entire telephone conversations with other mobile stations in the other base stations of the same and this unit can receive f _T and f _R both Therefore, the contents of the entire call can be grasped.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. In the figure, 1 is an antenna, f _T is the transmission frequency, f _R is the receiving frequency, 2 duplexer unit, 3 a frequency f _T
, 9 a receiving unit for the frequencies f _R and f _T , 10 a relay unit, 5 a control unit, 6 a speaker, 7 a press switch, and 8 a handset.

Hereinafter, this operation will be described. In FIG. 2, RF input to antenna 1 at reception frequency f _R
The signal is sent to the receiving unit 9 through the duplexer unit 2. The audio signal demodulated by the receiving unit 9 is transmitted as an audio output from the speaker 6 through the control unit 5 via the relay unit 10. Also, the R input to the antenna 1 at the reception frequency f _T
The F signal passes through the duplexer 2 and is sent to the receiver 9. The audio signal demodulated by the receiving unit 9 opens the audio gate circuit by the squelch signal sent from the receiving unit 9 at the same time, is sent to the relay unit 10 and the control unit 5, and is sent out from the speaker 6 as an audio output.

Here, the handset 8 is turned OFFHOOK.
By doing so, the relay unit 10 operates, and the demodulated output from the receiving unit 9 is sent to the transmitting unit 3 to be a transmission output, passes through the duplexer unit 2, and is emitted from the antenna 1 to the outside as a transmission output. When the press switch 7 is pressed, the relay operation of the relay unit 10 is interrupted, the microphone input from the handset 8 is sent to the transmission unit 3, the transmission output passes through the duplexer unit 2, and is emitted from the antenna 1 to the outside. You. The mobile station receives the radio frequency f _T wave and can make a call. Further, other mobile stations are similarly received on the wave of f _T and can grasp all the contents of the call. Further, the other base stations operate in the same manner as the present apparatus, so that all the contents of the call can be grasped.

[0008]

As described above, according to the present invention, 2
In a radio system of a half-duplex system using waves, the contents of a call can be easily grasped by other base stations and other mobile stations.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a configuration of a conventional wireless device.

[Explanation of symbols]

1 ... antenna, 2 ... shared device part, 3
... transmitting unit, 4 ... receiving unit (f
_R), 5 ... control unit, 6 ... speaker, 7 ... press switch, 8 ... handset, 9 ... receiving unit _{(f T / f R),} 10 ... relay unit.

Claims (1)

[Claims] In a semi-duplex radio system using two waves of radio frequencies f _T and f _R , usually a wave of f _T or f _R is awaited, and when one of the waves is received, the reception of the wave is performed. When the audio circuit is listened to by a squelch signal based on a signal and the mobile phone goes off-hook with a handset, the radio frequency f _R wave is converted to f _T and relayed and transmitted.
Radio with a relay function and controls to deliver the audio input signal of the unit in the radio frequency f _T by pressing the press switch.