JP2005102080A - Radio communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication system capable of preventing interference that is caused, when a plurality of mobile radio stations almost simultaneously perform transmission, even if unique numbers are not given to the mobile radio stations. <P>SOLUTION: When a CPU 210 of a mobile radio station 2 detects that a transmission button (not shown) is depressed, the CPU 210 uses a DTMF (dual tone multi-frequency) generation circuit 206 to generate a DTMF signal showing a transmission request and uses a transmission circuit 208 to transmit the DTMF signal; and when a DTMF conversion circuit 205 detects a DTMF signal, showing transmission inhibition during after lapse of preset time t1 until the lapse of a preset time t2, transmission is performed, and when the DTMF signal showing transmission inhibition is detected during the other time durations, and transmission is not performed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a radio communication system, and particularly to a radio communication system including one base station and a plurality of mobile radio stations.

  In a conventional radio communication system, a base station and a plurality of mobile radio stations are provided, one frequency for transmission from the base station to the mobile radio station, and another frequency for transmission from the mobile radio station to the base station. There is a type that performs communication between a base station and a mobile radio station.

In such a radio communication system, in order to prevent interference when a plurality of mobile radio stations transmit simultaneously, a unique number is assigned to the mobile radio station in advance, and the mobile radio station sets this number in the transmission start request. Then, by transmitting the mobile radio station number that is permitted to be transmitted on the base station side to transmit permission, signal transmission of the mobile radio station that is not permitted to transmit is suppressed (for example, Patent Document 1). reference).
JP 2000-269852 A

  However, in such a conventional wireless communication system, since a unique number must be assigned to the mobile radio station, when a mobile radio station is added, a number different from the existing mobile radio station is selected. There is a problem that interference from a plurality of mobile radio stations can only be prevented after setting.

  The present invention has been made to solve the conventional problem, and prevents interference caused by transmission of a plurality of mobile radio stations almost simultaneously without assigning a unique number to the mobile radio station. It is an object of the present invention to provide a wireless communication system that can perform the above-described operation.

  A radio communication system of the present invention includes a base station device and a plurality of mobile radio station devices, a transmission frequency from the base station device to the mobile radio station device, and from the mobile radio station device to the base station device. A radio communication system for transmitting and receiving voice signals and data signals between the base station apparatus and the mobile radio station apparatus at a frequency different from a transmission frequency, wherein the base station apparatus receives the received data signal When it is a data transmission request from the mobile radio station apparatus and the base station apparatus can accept the data transmission request, it controls transmission of a data signal indicating transmission prohibition to the mobile radio station apparatus The mobile radio station apparatus includes a voice signal input means for inputting the voice signal, a voice signal from the voice signal input means, and a data indicating the data transmission request. The signal is combined with the signal and transmitted to the base station apparatus, and data indicating the transmission prohibition from the base station apparatus between the elapse of a preset first time and the elapse of a predetermined second time And a control unit that enables transmission from the mobile radio station apparatus to the base station apparatus when a signal is received.

  With this configuration, a mobile radio station apparatus that has transmitted a transmission request with a delay has received a transmission prohibition before a preset elapsed time, and cannot transmit, thereby preventing interference due to continuous transmission requests.

  A radio communication system of the present invention includes a base station device and a plurality of mobile radio station devices, a transmission frequency from the base station device to the mobile radio station device, and from the mobile radio station device to the base station device. A radio communication system for transmitting and receiving voice signals and data signals between the base station apparatus and the mobile radio station apparatus at a frequency different from a transmission frequency, wherein the base station apparatus demodulates received radio waves. Receiving signal output means for outputting the received signal, separating means for separating the received signal into an audio signal and a data signal, a converting means for converting the data signal into data, and generating an indicated data signal Combining means for synthesizing with an audio signal, transmitting means for modulating the signal synthesized by the synthesizing means and transmitting it as a radio wave, and receiving the data signal from the mobile radio station And a control means for controlling transmission of a data signal indicating prohibition of transmission to the mobile radio station apparatus when the base station apparatus is capable of accepting the data transmission request. The mobile radio station apparatus comprises: received signal output means for demodulating the received radio wave and outputting a received signal; separating means for separating the received signal into an audio signal and a data signal; and converting means for converting the data signal into data Voice signal input means for inputting the voice signal, synthesis means for synthesizing a data signal generated based on the data with a voice signal input from the voice input means, and a signal synthesized by the synthesis means A transmitter that modulates and transmits as a radio wave, and a voice signal from the voice signal input unit and a data signal indicating the data transmission request are combined and transmitted to the base station apparatus in advance. When a data signal indicating the prohibition of transmission is received from the base station apparatus between the elapse of a predetermined first time and the elapse of a predetermined second time, the mobile radio station apparatus And a control unit that enables transmission to the station apparatus.

  With this configuration, a mobile radio station apparatus that has transmitted a transmission request with a delay has received a transmission prohibition before a preset elapsed time, and cannot transmit, thereby preventing interference due to continuous transmission requests.

  A radio communication system of the present invention includes a base station device and a plurality of mobile radio station devices, a transmission frequency from the base station device to the mobile radio station device, and from the mobile radio station device to the base station device. A radio communication system for transmitting and receiving voice signals and data signals between the base station apparatus and the mobile radio station apparatus at a frequency different from a transmission frequency, wherein the base station apparatus receives the received data signal When the data transmission request is set with a transmission identification number and the base station apparatus can accept the data transmission request, a data signal indicating transmission permission for the transmission identification number is transmitted to the mobile radio station apparatus. Control means for controlling transmission, wherein the mobile radio station apparatus counts up a timer value at a predetermined period, and the data transmission request When transmitting a data signal having the timer value as the transmission identification number to the base station device and transmitting the data signal indicating that the transmission identification number indicates the transmission permission from the base station device, And a control unit that enables transmission from the mobile radio station apparatus to the base station apparatus.

  With this configuration, a timer value is transmitted as a transmission identification number, and a mobile radio station apparatus permitted to transmit with this transmission identification number is identified, and interference can be prevented even when a transmission request is transmitted at the same time. .

  A radio communication system of the present invention includes a base station device and a plurality of mobile radio station devices, a transmission frequency from the base station device to the mobile radio station device, and from the mobile radio station device to the base station device. A radio communication system for transmitting and receiving voice signals and data signals between the base station apparatus and the mobile radio station apparatus at a frequency different from a transmission frequency, wherein the base station apparatus demodulates received radio waves. A reception signal output means for outputting a reception signal, a conversion means for detecting a data signal from the reception signal and converting it into data, a data conversion means for converting input data into a data signal, and the data conversion means. Transmitting means for modulating the converted data signal and transmitting it as radio waves; and the received data signal is a data transmission request in which a transmission identification number is set, and the base station equipment Control means for controlling transmission of a data signal indicating transmission permission to the mobile radio station apparatus for the transmission identification number when the data transmission request is acceptable, the mobile radio station apparatus Receiving signal output means for demodulating received radio waves and outputting a received signal; converting means for detecting a data signal from the received signal and converting it to data; and data converting means for converting input data into a data signal Transmitting means for modulating the data signal converted by the data conversion means and transmitting it as a radio wave, a timer counter for counting up a timer value at a predetermined period, and the timer value when transmitting the data transmission request Is transmitted to the base station apparatus, and the transmission identification number indicates the transmission permission from the base station apparatus. When receiving the data signal, it has a configuration and a control means for enabling transmission to the base station apparatus from the mobile radio station.

  With this configuration, a timer value is transmitted as a transmission identification number, and a mobile radio station apparatus permitted to transmit with this transmission identification number is identified, and interference can be prevented even when a transmission request is transmitted at the same time. .

  According to the present invention, the mobile radio station apparatus does not set a unique number in advance by performing transmission only when the mobile radio station apparatus detects transmission prohibition within a preset elapsed time. Interference due to continuous transmission of transmission requests can be prevented.

  Hereinafter, a wireless communication system according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a wireless communication system according to a first embodiment of this invention.

  In FIG. 1, the radio communication system of the present embodiment includes one base station 1 and a plurality of mobile radio stations 2, and one frequency and mobile radio station 2 are used for transmission from the base station 1 to the mobile radio station 2. A different frequency is used for transmission from the mobile station to the base station 1, and the base station 1 transmits the voice signal received from one mobile radio station 2 in a loop, and the voice from the single mobile radio station 2 is all transmitted. The mobile radio station 2 can listen to it.

  The base station 1 receives a reception antenna 101 that receives radio waves from the mobile radio station 2, a reception circuit 102 that demodulates the radio waves received by the reception antenna 101 and outputs a reception signal, and a reception signal output from the reception circuit 102. An audio filter circuit 103 that extracts an audio signal by filtering, a DTMF filter circuit 104 that extracts a DTMF (Dual Tone Multi-Frequency) signal by filtering the reception signal output from the reception circuit 102, and a DTMF extracted by the DTMF filter circuit 104 A DTMF conversion circuit 105 that converts a signal into data, a DTMF generation circuit 106 that generates a DTMF signal from input data, a voice signal output from the voice filter circuit 103, and a DTMF signal generated by the DTMF generation circuit 106 are combined. Adder 107 and the signal synthesized by the adder 107 A transmission circuit 108 that modulates the transmission signal and outputs a transmission radio wave, a transmission antenna 109 that transmits a transmission radio wave output from the transmission circuit 108, and a CPU (Central Processing Unit) that controls these circuits to operate as a base station. 110).

  The mobile radio station 2 receives a reception antenna 201 that receives radio waves from the base station 1, a reception circuit 202 that demodulates the radio waves received by the reception antenna 201 and outputs a reception signal, and a reception signal output from the reception circuit 202. An audio filter circuit 203 that extracts an audio signal by filtering and outputs the audio signal to an audio output unit such as an earphone (not shown), a DTMF filter circuit 204 that extracts a DTMF signal by filtering the reception signal output from the reception circuit 202, and a DTMF filter circuit 204 The DTMF conversion circuit 205 that converts the DTMF signal extracted in step S1 to data, the DTMF generation circuit 206 that generates a DTMF signal from the input data, the audio input unit 211 such as a microphone, and the audio signal output by the audio input unit 211 And the DTMF signal generated by the DTMF generation circuit 206 An adder 207 to be formed, a transmission circuit 208 that modulates a signal synthesized by the adder 207 and outputs a transmission radio wave, a transmission antenna 209 that transmits a transmission radio wave output from the transmission circuit 208, and these circuits. And a CPU 210 that performs an operation as a mobile radio station.

  In the radio communication system according to the present embodiment, there is only one frequency of radio waves transmitted from the mobile radio station 2 to the base station 1, and therefore interference occurs when a plurality of mobile radio stations 2 transmit at the same time. When station 1 accepts a transmission request from mobile radio station 2, DTMF signal indicating transmission prohibition is transmitted to mobile radio station 2 together with a voice signal, and transmission is permitted to mobile radio station 2 that has transmitted the transmission request. The other mobile radio stations 2 are in a state where a transmission request cannot be made.

  Furthermore, if another mobile radio station 2 transmits a transmission request after the mobile radio station 2 requests transmission and receives a DTMF signal indicating transmission prohibition, the mobile radio station 2 that first transmitted the transmission request When the mobile radio station 2 that has transmitted a transmission request later receives a transmission-prohibited DTMF signal for indicating transmission permission and determines that it is a transmission-prohibited DTMF signal indicating its own transmission permission, transmission starts. In order to prevent this, as shown in FIG. 2, the mobile radio station 2 detects that the transmission prohibited DTMF is detected between the time t1 and the time t1 after the transmission request is transmitted. Only the signal is judged as a response to its own transmission request.

  Specifically, when the CPU 210 of the mobile radio station 2 detects that a transmission button (not shown) is pressed, the DTMF generation circuit 206 generates a DTMF signal indicating “mobile radio station transmission”, and the adder 207 performs audio The signal is synthesized with the audio signal output from the input unit, and the signal synthesized by the transmission frequency 208 from the mobile radio station 2 to the base station 1 is transmitted by the transmission circuit 208 (S11). Start measuring the elapsed time of.

  In the base station 1, the reception circuit 102 detects that the radio wave from the mobile radio station 2 has been received, and outputs a reception signal obtained by demodulating the received radio wave to the audio filter circuit 103 and the DTMF filter circuit 104.

  The audio filter circuit 103 extracts an audio signal from the input signal and outputs it to the adder 107. The DTMF filter circuit 104 extracts a DTMF signal from the input signal and outputs it to the DTMF conversion circuit 105.

  The DTMF conversion circuit 105 detects a DTMF signal from the input signal, converts the detected DTMF signal into data, and notifies the CPU 110 of it.

  The CPU 110 determines the data notified from the DTMF conversion circuit 105, and if the notified data indicates “mobile radio station transmission”, causes the DTMF generation circuit 106 to generate a DTMF signal indicating “transmission prohibited”. The adder 107 synthesizes the audio signal output from the audio filter circuit 103, and the transmission circuit 108 transmits the signal synthesized at the frequency f2 for transmission from the base station 1 to the mobile radio station 2 (S12).

  The reception circuit 202 of the mobile radio station 2 detects that the radio wave from the base station 1 has been received, and outputs a reception signal obtained by demodulating the received radio wave to the audio filter circuit 203 and the DTMF filter circuit 204.

  The audio filter circuit 203 extracts an audio signal from the input signal and outputs it to the audio output unit. The DTMF filter circuit 204 extracts a DTMF signal from the input signal and outputs it to the DTMF conversion circuit 205.

  The DTMF conversion circuit 205 detects a DTMF signal from the input signal, converts the detected DTMF signal into data, and notifies the CPU 210 of it.

  The CPU 210 determines the data notified from the DTMF conversion circuit 205 and, if the notified data indicates “transmission prohibited”, transmits “mobile radio station transmission” timed by the timer counter. If the elapsed time is not less than t1 and not more than t1 + t2, it is determined that the received “transmission prohibition” is a response of “mobile radio station transmission” transmitted by itself, and transmission is continued.

  If the elapsed time is shorter than t1 or longer than t1 + t2, it is determined that the received “transmission prohibition” is not a response of “mobile radio station transmission” transmitted by itself, and transmission is stopped.

  As described above, in the present embodiment, only the “transmission prohibited” detected by the mobile radio station 2 during the time elapsed from the transmission of the transmission request by “mobile radio station transmission” between t1 and t1 + t2 is transmitted by itself. Since it is determined that the response is “transmission of mobile radio station” and transmission is performed, even if a unique number is not set in advance for mobile radio station 2, t2 from “mobile radio station transmission” of the first mobile radio station It is possible to prevent interference when “mobile radio station transmission” of another mobile radio station is transmitted after the elapse of time.

  FIG. 3 is a diagram illustrating a case where a plurality of mobile radio stations simultaneously transmit in the present embodiment.

  As shown in FIG. 3, when the mobile radio station 2a presses the transmission button almost simultaneously with the mobile radio station 2a pressing the transmission button, as described above, the mobile radio station 2a transmits “mobile radio station transmission”. "Transmission prohibited" is detected while a time period from t1 to t1 + t2 has elapsed since the transmission of "."

  In the mobile radio station 2b in which the transmission button is pressed a little later than the mobile radio station 2a, as described above, the mobile station 2 transmits “mobile radio station transmission” to the base station 1 and waits for reception of “transmission prohibited”. “Transmission prohibited” for “mobile radio station transmission” of the mobile radio station 2a is transmitted from the base station 1, and the mobile radio station 2b performs “transmission” before the elapsed time from transmission of “mobile radio station transmission” reaches t1. Since “prohibited” is detected, it is determined that the received “transmission prohibited” is not a response of “mobile radio station transmission” transmitted by itself, and transmission is stopped.

  As described above, the mobile radio station 2b that transmits “mobile radio station transmission” after the elapse of time t2 after the transmission button is pressed at the first mobile radio station 2a and “transmission of mobile radio station” is transmitted. “Transmission prohibited” for “mobile radio station transmission” transmitted by the radio station 2a is detected before the time t1 has elapsed since the transmission of “mobile radio station transmission”, and transmission is stopped. Can be prevented.

  Note that t1 is preferably set to the time from when “mobile radio station transmission” in the average case to “transmission prohibited” is detected, and t2 from “mobile radio station transmission” under various conditions. It is preferable to set according to the range of error from t1 of the time until “transmission prohibition” is detected, how much interference is unlikely to occur.

  In this embodiment, the base station 1 transmits “transmission prohibited” after receiving “mobile radio station transmission” from the mobile radio station 2 and transmits nothing before that. As shown in FIG. 4, when there is no transmission from the mobile radio station 2, “transmission permission” is transmitted, and when “mobile radio station transmission” is received, “transmission permission” is changed to “transmission prohibition”. It may be.

  Next, FIG. 5 is a diagram illustrating a wireless communication system according to the second embodiment of this invention. Since the present embodiment is configured in substantially the same manner as the first embodiment described above, the same reference numerals are given to the same configurations, and only the characteristic portions will be described.

  As shown in FIG. 5, in the present embodiment, base station 3 has a mute circuit 301 for muting the reception signal output from reception circuit 102 and a frequency band set in advance from the reception signal output from reception circuit 102. A filter circuit 302 for filtering out the above signal, a signal conversion circuit 303 for converting the signal extracted by the filter circuit 302 into data, and a data conversion circuit 304 for converting input data into a digital signal.

  The mobile radio station 4 also includes a mute circuit 401 that mutes the reception signal output from the reception circuit 202, and a filter circuit 402 that filters out a signal in a preset frequency band from the reception signal output from the reception circuit 202. , A signal conversion circuit 403 that converts the signal extracted by the filter circuit 402 into data, and a data conversion circuit 404 that converts input data into a digital signal.

  In the radio communication system having such a configuration, the mobile radio station 4 sets the value of the timer counter in the CPU 405 as a transmission ID (IDentification) in the transmission request at the start of transmission and notifies the base station 3 of the transmission request. When the transmission ID set for the transmission permission matches the transmission ID set for the transmission request, the transmission is determined to be the transmission permission for the own transmission request.

  Specifically, when the CPU 405 of the mobile radio station 4 detects that a transmission button (not shown) is pressed, as shown in FIG. 6, the value of the timer counter that is counted up every clock cycle of the built-in CPU 405 Is read and stored, and the data conversion circuit 404 generates a transmission request in which the value of the timer counter is set as a transmission ID. The adder 207 synthesizes it with the audio signal output from the audio input unit. A signal synthesized at the frequency f1 for transmission from the wireless station 4 to the base station 3 is transmitted (S21).

  Here, the value of the timer counter is different even for the mobile radio stations 4 of the same type and the same function, and the probability that the timer counter values match in the two mobile radio stations 4 is very low. You can think about it.

  In the base station 3, the reception circuit 102 detects that the radio wave from the mobile radio station 4 has been received, and outputs a reception signal obtained by demodulating the received radio wave to the mute circuit 301 and the filter circuit 302.

  The mute circuit 301 outputs a silence signal to the adder 107. The filter circuit 302 extracts a signal in a preset digital signal frequency band from the input signal and outputs the signal to the signal conversion circuit 303.

  The signal conversion circuit 303 converts the input digital signal into data and notifies the CPU 305 of it.

  The CPU 305 determines the data notified from the signal conversion circuit 303. If the notified data is a transmission request, the CPU 305 extracts the transmission ID set in the transmission request and sets the transmission ID in the data conversion circuit 304. The transmission permission is generated, and the adder 107 combines with the signal output from the mute circuit 301, and the transmission circuit 108 transmits the signal combined with the frequency f2 for transmission from the base station 3 to the mobile radio station 4 (S22). ), The signal input to the mute circuit 301 is output as it is, and the received audio signal is output to the adder 107.

  The reception circuit 202 of the mobile radio station 4 detects that the radio wave from the base station 3 has been received, and outputs a reception signal obtained by demodulating the received radio wave to the mute circuit 401 and the filter circuit 402.

  The mute circuit 401 outputs a silence signal to the audio output unit. The filter circuit 402 extracts a signal in a preset digital signal frequency band from the input signal and outputs the signal to the signal conversion circuit 403.

  The signal conversion circuit 403 converts the input digital signal into data and notifies the CPU 405 of it.

  The CPU 405 determines the data notified from the signal conversion circuit 403, and if the notified data indicates transmission permission, the transmission ID set for this transmission permission matches the stored transmission ID. If they match, it is determined that the received transmission permission is a response to the transmission request transmitted by itself, the signal input to the mute circuit 401 is output as it is, and the received audio signal is output as audio Output to the unit and continue transmission.

  If the transmission ID set for transmission permission does not match the stored transmission ID, it is determined that the received transmission permission is not a response to the transmission request transmitted by itself, and transmission is stopped.

  As described above, in this embodiment, the mobile radio station 4 transmits the transmission request by setting the value of the timer counter as the transmission ID, and determines that the transmission permission in which this transmission ID is set is the transmission permission of itself. Therefore, it is possible to prevent interference due to simultaneous transmission of a plurality of mobile radio stations 4 without setting a unique number for the mobile radio station 4 in advance.

  As described above, the wireless communication system according to the present invention has an effect that interference due to transmission of continuous transmission requests can be prevented without setting a unique number in advance in the mobile radio station apparatus. This is useful as a wireless communication system including one base station and a plurality of mobile wireless stations.

The block diagram of the radio | wireless communications system of the 1st Embodiment of this invention The figure for operation | movement description of the radio | wireless communications system of the 1st Embodiment of this invention The figure for demonstrating that the interference of the radio | wireless communications system of the 1st Embodiment of this invention does not arise The figure for demonstrating operation | movement of the other example of the radio | wireless communications system of the 1st Embodiment of this invention. The block diagram of the radio | wireless communications system of the 2nd Embodiment of this invention The figure for operation | movement description of the radio | wireless communications system of the 2nd Embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base station 101 Reception antenna 102 Reception circuit 103 Voice filter circuit 104 DTMF filter circuit 105 DTMF conversion circuit 106 DTMF generation circuit 107 Adder 108 Transmission circuit 109 Transmission antenna 110 CPU
2, 2a, 2b Mobile radio station 201 Reception antenna 202 Reception circuit 203 Voice filter circuit 204 DTMF filter circuit 205 DTMF conversion circuit 206 DTMF generation circuit 207 Adder 208 Transmission circuit 209 Transmission antenna 210 CPU
211 audio input unit 3 base station 301 mute circuit 302 filter circuit 303 signal conversion circuit 304 data conversion circuit 305 CPU
4 mobile radio station 401 mute circuit 402 filter circuit 403 signal conversion circuit 404 data conversion circuit 405 CPU

Claims (4)

A base station device and a plurality of mobile radio station devices;
Between the base station apparatus and the mobile radio station apparatus, the transmission frequency from the base station apparatus to the mobile radio station apparatus is different from the transmission frequency from the mobile radio station apparatus to the base station apparatus. A wireless communication system for transmitting and receiving audio and data signals,
When the received data signal is a data transmission request from the mobile radio station apparatus and the base station apparatus can accept the data transmission request, the base station apparatus transmits a data signal indicating transmission prohibition. Control means for controlling transmission to the mobile radio station apparatus;
The mobile radio station apparatus synthesizes a voice signal input means for inputting the voice signal, a voice signal from the voice signal input means and a data signal indicating the data transmission request, and transmits the synthesized data to the base station apparatus. When a data signal indicating the prohibition of transmission is received from the base station apparatus between the elapse of a preset first time and the elapse of a predetermined second time, the mobile radio station apparatus A wireless communication system comprising: control means that enables transmission to a base station apparatus. A base station device and a plurality of mobile radio station devices;
Between the base station apparatus and the mobile radio station apparatus, the transmission frequency from the base station apparatus to the mobile radio station apparatus is different from the transmission frequency from the mobile radio station apparatus to the base station apparatus. A wireless communication system for transmitting and receiving audio and data signals,
The base station apparatus includes: a reception signal output unit that demodulates received radio waves and outputs a reception signal; a separation unit that separates the reception signal into an audio signal and a data signal; and a conversion unit that converts the data signal into data A synthesizing unit that generates an instructed data signal and synthesizes it with the voice signal, a transmitting unit that modulates the signal synthesized by the synthesizing unit and transmits the modulated signal as a radio wave, A control means for controlling transmission of a data signal indicating transmission prohibition to the mobile radio station device when the data transmission request is received from the device and the base station device can accept the data transmission request. Have
The mobile radio station apparatus includes a reception signal output means for demodulating a received radio wave and outputting a reception signal, a separation means for separating the reception signal into an audio signal and a data signal, and a conversion for converting the data signal into data. Means, a voice signal input means for inputting the voice signal, a synthesis means for synthesizing a data signal generated based on the data with a voice signal inputted from the voice input means, and a signal synthesized by the synthesis means A transmission means for modulating and transmitting as a radio wave, a voice signal from the voice signal input means and a data signal indicating the data transmission request are combined and transmitted to the base station apparatus, and a preset first When a data signal indicating the prohibition of transmission is received from the base station apparatus after the elapse of time until a predetermined second time elapses, the mobile radio station apparatus Wireless communication system, characterized by a control means allowing the transmission to the device. A base station device and a plurality of mobile radio station devices;
Between the base station apparatus and the mobile radio station apparatus, the transmission frequency from the base station apparatus to the mobile radio station apparatus is different from the transmission frequency from the mobile radio station apparatus to the base station apparatus. A wireless communication system for transmitting and receiving audio and data signals,
The base station device permits transmission of the transmission identification number when the received data signal is a data transmission request in which a transmission identification number is set and the base station device can accept the data transmission request. Control means for controlling the transmission of the data signal indicating to the mobile radio station device,
The mobile radio station apparatus includes a timer counter that counts up a timer value at a predetermined cycle, and a data signal to the base station apparatus that uses the timer value as the transmission identification number when transmitting the data transmission request. Control means for performing transmission and enabling transmission from the mobile radio station apparatus to the base station apparatus when the data signal whose transmission identification number indicates the transmission permission is received from the base station apparatus A wireless communication system. A base station device and a plurality of mobile radio station devices;
Between the base station apparatus and the mobile radio station apparatus, the transmission frequency from the base station apparatus to the mobile radio station apparatus is different from the transmission frequency from the mobile radio station apparatus to the base station apparatus. A wireless communication system for transmitting and receiving audio and data signals,
The base station apparatus includes a reception signal output means for demodulating the received radio wave and outputting a reception signal, a conversion means for detecting a data signal from the reception signal and converting it into data, and converting the input data into a data signal. A data conversion means for conversion, a transmission means for modulating the data signal converted by the data conversion means and transmitting it as a radio wave, a data transmission request in which the received data signal is set with a transmission identification number, and this base Control means for controlling transmission of the data signal indicating transmission permission for the transmission identification number to the mobile radio station apparatus when the station apparatus can accept the data transmission request;
The mobile radio station apparatus includes: a reception signal output unit that demodulates received radio waves and outputs a reception signal; a conversion unit that detects a data signal from the reception signal and converts the data signal to data; and A data conversion means for converting the data signal, a transmission means for modulating the data signal converted by the data conversion means and transmitting it as a radio wave, a timer counter for counting up a timer value at a predetermined cycle, and the data transmission request. When transmitting a data signal having the timer value as the transmission identification number to the base station apparatus, and when the transmission identification number receives a data signal indicating the transmission permission from the base station apparatus, A wireless communication system comprising: a control unit that enables transmission from a mobile radio station apparatus to the base station apparatus.

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