JPH10210555A - Mobile communication equipment and mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a radio wave from being unexpectedly outputted even when a power supply is left unswitched in an area where the mobile terminal equipment is noticed to be not in use. SOLUTION: A specific base station 1 sends a radio wave with a specific frequency as a specific signal 35 so as not to output a radio wave to a mobile terminal equipment 2. The mobile terminal equipment 2 receives the specific signal 35 and makes operations as follows; that is, a specific signal reception section 11 provides an output of an inhibit signal 31 denoting inhibit of a radio wave output when receiving the specific signal 35, an inhibit signal control section 12 does not output a transmission enable signal 32 outputted by a radio control section 9 when the inhibit signal 31 is outputted and outputs the transmission enable signal 32 to the transmission section 8 when no inhibit signal 31 is outputted, and the transmission section 8 outputs the signal to be sent as the transmission signal from an antenna 6 when receiving the transmission enable signal 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device and a mobile communication system, and more particularly to a mobile communication device and a mobile communication system which do not inadvertently output radio waves.

[0002]

2. Description of the Related Art Heretofore, this type of mobile communication device and mobile communication system has been described as a mobile communication device using a mobile terminal such as an automobile telephone or a portable telephone (hereinafter referred to as a mobile terminal). ) And a mobile communication system using this device is used to reduce inconvenience caused by the mobile terminal to a third party in a public place such as a lecture hall. This type of mobile communication device and mobile communication system is described in, for example, Japanese Patent Application Laid-Open No. Hei 7-264671, and is a predetermined specific base station (hereinafter referred to as a specific base station). ) Transmits a radio wave of a predetermined specific frequency to the mobile terminal, whereby the mobile terminal recognizes the radio wave, requests connection with the mobile terminal, and performs a normal communication such as a telephone call. When there is an incoming call from the normal base station, the mobile terminal does not make an incoming call by exchanging with the normal base station by radio waves to prevent a ringing tone. .

[0003]

In the above-mentioned conventional mobile communication apparatus and mobile communication system, a specific base station sends out a radio wave of a predetermined specific frequency to a mobile terminal, so that the mobile communication apparatus and the mobile communication system can transmit the radio wave. When the terminal recognizes this radio wave and there is an incoming call from the normal base station desiring connection with this mobile terminal, this mobile terminal exchanges with this normal base station by radio wave. Since the ringing tone is prevented from ringing by preventing incoming calls, if the power is not turned off, if there is an incoming call from the base station normally, even if the ringing tone does not sound, radio waves will not be emitted. Mobile terminals that are left unnoticed without turning off the power in areas where caution is required not to use mobile terminals, such as in airplanes and hospitals that have precision equipment affected by radio waves From There is a problem that the precision equipment or the like is affected by a radio wave output in mind.

[0004] An object of the present invention is to eliminate such a drawback in the prior art, in an area where the mobile terminal should be used without care, even if the mobile terminal is left without being turned off. An object of the present invention is to provide a mobile communication device and a mobile communication system in which radio waves are not inadvertently output from a mobile terminal.

[0005]

The mobile communication device of the present invention does not output radio waves when receiving radio waves of a predetermined frequency.

Further, a mobile communication device according to the present invention includes a receiving unit for obtaining a reception signal from an antenna, and a signal to be transmitted when receiving a transmission permission signal, which is a signal for permitting a transmission operation, as a transmission signal. And a radio control unit that controls the operation of the receiving unit and the transmitting unit and outputs the transmission permission signal when the transmitting unit wants to perform a transmitting operation, and the predetermined frequency. A specific signal receiving antenna for receiving a radio wave of the specific signal, and a specific signal receiving unit that outputs a prohibition signal indicating that the output of the radio wave is prohibited when the specific signal receiving antenna is receiving the radio wave of the predetermined frequency. And preventing the transmission permission signal output by the wireless control unit from being output to the transmission unit when the specific signal receiving unit is outputting the prohibition signal, The wireless control unit is configured to include a prohibition signal control unit for the transmission permission signal output to output to the transmission unit when the signal unit does not output the inhibition signal.

Further, a mobile communication device according to the present invention includes a power supply unit for supplying power when a power stop signal is not received, a receiving unit supplied with power from the power supply unit and receiving a reception signal from an antenna, A transmitting unit that is supplied with power from the unit and outputs a signal to be transmitted from the antenna as a transmission signal when receiving a transmission permission signal that is a signal for permitting a transmission operation; A radio control unit that controls the operation of the unit and the transmitting unit and outputs the transmission permission signal to the transmitting unit when the transmitting unit wants to perform the transmitting operation, and receives the radio wave of the predetermined frequency. A specific signal receiving antenna, and a specific signal for outputting a prohibition signal indicating that output of radio waves is prohibited when the specific signal receiving antenna is receiving radio waves of the predetermined frequency. A transmission unit, and outputs the power supply stop signal indicating that power supply to the transmission unit, the reception unit, and the wireless control unit is stopped when the specific signal reception unit is outputting the prohibition signal, A prohibition signal control unit configured to release the output of the power stop signal when the specific signal receiving unit does not output the prohibition signal.

Further, in the mobile communication system according to the present invention, a specific base station for transmitting the radio wave of the predetermined frequency to instruct the mobile communication device not to output a radio wave, And a mobile communication device.

The mobile communication system according to the present invention further comprises a specific base station for transmitting the radio wave of the predetermined frequency to instruct the mobile communication device not to output the radio wave. And a mobile communication device.

In the mobile communication system according to the present invention, a specific base station for transmitting the radio wave of the predetermined frequency to instruct the mobile communication device not to output a radio wave, wherein: And a mobile communication device.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a mobile communication device and a mobile communication system according to the present invention.

[0013] The mobile communication system of the mobile communication device and the mobile communication system of the present embodiment shown in FIG. 1 is designed not to output radio waves when receiving radio waves of a predetermined frequency. Mobile communication device (hereinafter referred to as mobile terminal 2) using mobile terminal 2 such as a mobile phone or a mobile phone.
It is described. ) And a specific base station 1 indicating a specific base station transmitting the radio wave of the predetermined frequency to instruct the mobile terminal 2 not to output the radio wave.

The mobile communication device of the present embodiment shown in FIG. 1 and the mobile communication device of the mobile communication system, that is, the mobile terminal 2 desires connection with the mobile terminal 2 and talks. The receiving unit 7 receives a normal signal from a normal base station performing normal communication as a reception signal from the antenna 6, and receives a transmission permission signal 32 which is a signal for permitting a transmission operation. A transmission unit 8 that outputs a signal to be transmitted as a transmission signal from the antenna 6, and controls the operations of the reception unit 7 and the transmission unit 8 and outputs a transmission permission signal 32 when the transmission unit 8 wants to perform a transmission operation. The wireless control unit 9, the specific signal 35 receiving antenna 10 for receiving a radio wave of a predetermined frequency, and prohibiting the output of the radio wave when the specific signal receiving antenna 10 is receiving the radio wave of the predetermined frequency A specific signal receiving unit 11 for outputting a prohibition signal 31 indicating the bets, specific signal receiving unit 11 is prohibited signal 3
1 so that the transmission permission signal 32 output by the wireless control unit 9 is not output to the transmission unit 8 while the specific signal receiving unit 11 is not outputting the prohibition signal 31. The transmission permission signal 32 is output to the transmission unit 8 and the prohibition signal control unit 12 is configured.

Next, the operation of the mobile communication device and the mobile communication system of the present embodiment will be described in detail with reference to FIG.

FIG. 2 is a flowchart showing an example of the operation of the embodiment of the present invention.

In FIG. 1, a specific base station 1 is installed in a prohibited area 30 indicating an area where caution is required not to use a mobile terminal 2 such as in an airplane or a hospital having precision equipment or the like affected by radio waves. I do. In other words, there is no need to radiate radio waves over a wide area like a base station, and it is usually installed in a closed area, for example, in an aircraft only in an aircraft, or in a hospital in front of an intensive care unit with medical equipment. I just need. In particular, it should be noted that if this radio wave is too strong, the radio wave of this specific frequency may be transmitted to the mobile terminal 2 outside the target area. The specific base station 1 always outputs a specific signal 35 of a predetermined frequency instructing to prohibit the output of the radio wave from the mobile terminal 2.

First, the case of an incoming call will be described.

When the mobile terminal 2 is outside the prohibited area 30 and the radio wave of the specific signal 35 does not reach, the specific signal receiving section 11 does not receive the radio wave of the specific signal 35 by the specific signal receiving antenna 10. Does not output the inhibit signal 31 (S1-1). When an incoming call is generated from the normal base station to the mobile terminal 2, that is, when the receiving unit 7 receives the normal signal 34 for incoming from the normal base station via the antenna 6 (S 2), the wireless communication is performed. The control unit 9 issues a transmission permission signal 32 to the prohibition signal control unit 12 (S3). The prohibition signal control unit 12 controls the prohibition signal 3 from the specific signal reception unit 11.
1 is not included, so that the transmission permission signal 3
2 is issued (S4). Upon receiving the transmission permission signal 32, the transmission unit 8 starts radio communication with the normal base station via the antenna 6 to enter a call (S5), and terminates communication with the normal base station by ending the call (S-END1).

When the mobile terminal 2 is within the prohibited area 30 and the radio wave of the specific signal 35 is reached (S1-2), the specific signal receiving antenna 10 receives the radio wave of the specific signal 35 and the specific signal receiving unit. 11 issues a prohibition signal 31 (S
8). When an incoming call is generated from the normal base station to the mobile terminal 2, that is, when the receiving unit 7 receives the normal signal 34 for incoming from the normal base station via the antenna 6 (S 6), the wireless communication is performed. The control section 9 issues a transmission permission signal 32 to the prohibition signal control section 12 (S7). Prohibition signal control unit 12
When receiving the prohibition signal 31 from the specific signal receiving unit 11, the transmission invalidating signal 32 is invalidated, and no signal is sent to the transmitting unit 8. Therefore, the transmission unit 8 does not operate and no radio wave is output (S9). Here, since the mobile terminal 2 does not output a radio wave, there is no communication between the normal base station and the mobile terminal 2, so that the normal base station transmits the radio wave from the normal base station. It is determined that the mobile terminal 2 is in an unreachable area (out of service area) or that the power of the mobile terminal 2 is turned off, and the line is disconnected (S10).

Next, an outgoing call will be described.

When the mobile terminal 2 is outside the prohibited area 30 and the radio wave of the specific signal 35 does not reach the specific terminal 35, the radio signal of the specific signal 35 is not received by the specific signal receiving antenna 10. Does not output the inhibit signal 31 (S1-1). Then, a call is generated (S
2). Thereafter, as in the case of the incoming call, the operation is performed according to the procedure from Step 3 (S3) to Step END1 (S-END1).

When the mobile terminal 2 is within the prohibited area 30 and the radio wave of the specific signal 35 is reached (S1-2), the specific signal receiving antenna 10 receives the radio wave of the specific signal 35 and the specific signal receiving section. 11 issues a prohibition signal 31 (S
8). Then, a call is generated (S6). Thereafter, as in the case of the incoming call, Step 7 (S7) to Step 9 (S
It operates according to the procedure of 9). And here, the mobile terminal 2
Does not output a radio wave, and thus does not normally transmit to or receive from the base station, and thus cannot transmit (S10).

Although the operation for incoming and outgoing calls has been described above, the operation for location registration is the same, and when the specific signal 35 is being received, the specific signal receiving unit 11 When the prohibition signal control unit 12 receives the prohibition signal 31 from the specific signal reception unit 11, the prohibition signal control unit 12 invalidates the transmission permission signal 32 and does not send any signal to the transmission unit 8. No location registration operation is performed.

In the above description, the prohibition signal control unit 12 is provided outside the radio control unit 9. However, the prohibition signal control unit 12 works inside the radio control unit 9, and the radio control unit 9 itself transmits the transmission permission signal 32. May be controlled.

FIG. 3 is a block diagram showing another embodiment of the mobile communication device and the mobile communication system according to the present invention.

The mobile communication system of the mobile communication device and the mobile communication system according to the present embodiment shown in FIG. 3 is designed so as not to output a radio wave when receiving a radio wave of a predetermined frequency. And a mobile communication device using the mobile terminal 20 such as a car phone or a mobile phone (hereinafter, referred to as a mobile terminal 20), and instructing the mobile terminal 20 not to output radio waves. Specific base station 1 indicating a specific base station transmitting a radio wave of this predetermined frequency.
It is composed of

The mobile communication device of the present embodiment shown in FIG. 3 and the mobile communication device of the mobile communication system, that is, the mobile terminal 20 supplies power when the power stop signal 33 is not received. And a normal signal from a normal base station that is supplied with power from the power supply unit 22 and that performs a normal communication such as a call by requesting a connection with the mobile terminal 20 as a reception signal from the antenna 6. A signal to be transmitted to the normal base station is output from the antenna 6 as a transmission signal when receiving power from the receiving unit 23 and the power supply unit 22 and receiving a transmission permission signal 32 which is a signal for permitting a transmission operation. Radio control that is supplied with power from the transmission unit 24 and the power supply unit 22, controls the operations of the reception unit 23 and the transmission unit 24, and outputs the transmission permission signal 32 when the transmission unit 24 wants the transmission operation. 25, a specific signal receiving antenna 10 for receiving radio waves of a predetermined frequency, and a prohibition indicating that output of radio waves is prohibited when the specific signal receiving antenna 10 is receiving radio waves of a predetermined frequency. A specific signal receiving unit 11 that outputs a signal 31; and a transmitting unit 24 when the specific signal receiving unit 11 outputs the prohibition signal 31;
Outputs a power stop signal 33 indicating that power supplied to the receiving unit 23 and the wireless control unit 25 is stopped, and releases the output of the power stop signal 33 when the specific signal receiving unit 11 does not output the prohibition signal 31. And a prohibition signal control unit 21 that performs the control.

Next, the operation of the mobile communication device and the mobile communication system of the present embodiment will be described in detail with reference to FIG.

FIG. 4 is a flowchart showing an example of the operation of another embodiment of the present invention.

In FIG. 3, the specific base station 1 is installed in a prohibited area 30 indicating an area where caution should be exercised not to use the mobile terminal 20 such as in an airplane or a hospital having precision equipment affected by radio waves. I do. In other words, there is no need to fly radio waves over a wide area like a normal base station, and in a closed area, for example, only in an aircraft if it is an aircraft,
In a hospital, it may be installed in front of an intensive care unit where medical equipment is located. It should be noted that if the radio wave is too strong, the radio wave of the specific frequency may be transmitted to the mobile terminal 20 outside the target area. And the specific base station 1 is a mobile terminal 2
A specific signal 35 of a predetermined frequency that instructs to prohibit the output of radio waves from 0 is always output.

First, the operation in the case of an incoming call will be described.

When the mobile terminal 20 is outside the prohibited area 30 and the radio wave of the specific signal 35 does not reach, the radio wave of the specific signal 35 is not received by the specific signal receiving antenna 10, so that the specific signal receiving unit 11 Does not output the inhibit signal 31. Then, the prohibition signal control unit 21 cancels the output of the power supply stop signal 33 because the prohibition signal 31 from the specific signal reception unit 11 is not input, that is, does not output the power supply stop signal 33. And receiver 23
And the wireless control unit 25 is continuously supplied with power (S11-1). Then, when an incoming call is generated from the normal base station to the mobile terminal 20, that is, when the receiving unit 23 receives the normal signal 34 for incoming from the normal base station via the antenna 6 (S21), the wireless communication is performed. The control unit 25 issues a transmission permission signal 32 to the transmission unit 24 (S22). Upon receiving the transmission permission signal 32, the transmitting unit 24 starts radio communication with the normal base station via the antenna 6 to start a call (S23), and ends communication with the normal base station by ending the call (S-END2).

When the mobile terminal 20 is within the prohibited area 30 and the radio wave of the specific signal 35 is reached (S11-2), the specific signal receiving antenna 10 receives the radio wave of the specific signal 35 and the specific signal receiving section. 11 issues a prohibition signal 31,
The prohibition signal control unit 21 receives the prohibition signal 31 from the specific signal reception unit 11 and outputs a power stop signal 33 (S24).
The power supply unit 22 includes a transmission unit 24, a reception unit 23, and a wireless control unit 25.
Then, the supply of power is stopped (S25). Then, the normal base station sends the normal signal 34 to the mobile terminal 20 for receiving a call.
(S26), the transmission unit 24 of the mobile terminal 20
Since the power is not supplied to the receiving unit 23 and the wireless control unit 25, the mobile terminal 20 does not output radio waves.
Normally, no exchange occurs between the base station and the mobile terminal 20. For this reason, the normal base station is located in an area where the mobile terminal 20 does not receive radio waves from the normal base station (out of service area).
Or the power of the mobile terminal 20 is turned off, and the line is disconnected (S27).

Here, the mobile terminal 20 is in the prohibited area 3
When moving out of the prohibited area 30 from within 0,
When the mobile terminal 20 to which the power of the transmitting unit 24, the receiving unit 23, and the wireless control unit 25 is not supplied moves outside the prohibited area 30, the radio wave of the specific signal 35 does not reach the mobile terminal 20. (S28). Since the radio wave of the specific signal 35 does not reach the mobile terminal 20, the specific signal receiving unit 11 stops the prohibition signal 31, and the prohibition signal control unit 21 loses the prohibition signal 31.
Is released (S29). When the power stop signal 33 is released, the power supply unit 22 resumes supplying power to the transmission unit 24, the reception unit 23, and the wireless control unit 25, and the mobile terminal 20 can normally communicate with the base station. Return to the normal state (S30).

Next, the operation in the case of making a call will be described.

When the mobile terminal 20 is outside the prohibited area 30 and the radio wave of the specific signal 35 does not reach, the radio wave of the specific signal 35 is not received by the specific signal receiving antenna 10 and thus the specific signal receiving unit 11 Does not output the inhibit signal 31. Then, the prohibition signal control unit 21 cancels the output of the power supply stop signal 33 because the prohibition signal 31 from the specific signal reception unit 11 is not input, that is, does not output the power supply stop signal 33. And receiver 23
And the wireless control unit 25 is continuously supplied with power (S11-1). Then, a call is generated (S21). Since then
As in the case of the incoming call, the operation is performed according to the procedure from step 22 (S22) to step END2 (S-END2).

When the mobile terminal 20 is within the prohibited area 30 and the radio wave of the specific signal 35 is reached (S11-2), the specific signal receiving antenna 10 receives the radio wave of the specific signal 35 and the specific signal receiving section. 11 issues a prohibition signal 31,
The prohibition signal control unit 21 receives the prohibition signal 31 from the specific signal reception unit 11 and outputs a power stop signal 33 (S24).
The power supply unit 22 includes a transmission unit 24, a reception unit 23, and a wireless control unit 25.
Then, the supply of power is stopped (S25). Then, a call is generated (S26). However, since the mobile terminal 20 is not supplied with power to the transmission unit 24, the reception unit 23, and the wireless control unit 25, there is no communication between the mobile terminal 20 and the base station.

Here, the mobile terminal 20 is in the prohibited area 3
When moving out of the prohibited area 30 from within 0,
When the mobile terminal 20 to which the power of the transmitting unit 24, the receiving unit 23, and the wireless control unit 25 is not supplied moves outside the prohibited area 30, the radio wave of the specific signal 35 does not reach the mobile terminal 20. (S28). Since the radio wave of the specific signal 35 does not reach the mobile terminal 20, the specific signal receiving unit 11 stops the prohibition signal 31, and the prohibition signal control unit 21 eliminates the prohibition signal 31.
Is released (S29). When the power stop signal 33 is released, the power supply unit 22 resumes the supply of power to the transmission unit 24, the reception unit 23, and the wireless control unit 25, and the mobile terminal 20 can normally communicate with the base station. Return to the normal state (S30).

The operation for incoming and outgoing calls has been described above. The operation for location registration is the same, and when the specific signal 35 is being received, the specific signal receiving unit 11 When the prohibition signal control unit 21 receives the prohibition signal 31 from the specific signal receiving unit 11, it outputs a power stop signal 33. Then, the power supply unit 22 stops supplying power to the reception unit 23, the transmission unit 24, and the wireless control unit 25 based on this signal, so that the position registration operation is not performed.

In the above description, the mobile terminal 20 is provided with the two antennas of the specific signal receiving antenna 10 and the antenna 6, but the number of these antennas may be one. When the specific signal 35 is received, a display unit such as an LCD (not shown) or a receiver may be operated to display that use is prohibited on the display unit, or a busy tone may be sounded by the receiver.

[0042]

As described above, according to the mobile communication apparatus and the mobile communication system of the present invention, the radio wave of a predetermined specific frequency transmitted from the specific base station is transmitted to the mobile terminal. When the specific signal receiving unit is receiving, the prohibition signal control unit does not output the transmission permission signal from the wireless control unit to the transmission unit, or the prohibition signal control unit outputs the power stop signal to transmit. Use the mobile terminal because the transmitter required for incoming / outgoing call / location registration operations of the mobile terminal does not operate in order not to supply power to the receiver, receiver, and wireless controller. Even if the mobile terminal is left without being turned off in a prohibited area where care should be taken, radio waves are not inadvertently output from the mobile terminal.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a mobile communication device and a mobile communication system of the present invention.

FIG. 2 is a flowchart illustrating an example of an operation according to the exemplary embodiment of the present invention.

FIG. 3 is a block diagram showing another embodiment of the mobile communication device and the mobile communication system of the present invention.

FIG. 4 is a flowchart showing an example of the operation of another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 specific base station 2 mobile terminal 4 specific signal transmitting antenna 6 antenna 7 receiving unit 8 transmitting unit 9 wireless control unit 10 specific signal receiving antenna 11 specific signal receiving unit 12 prohibition signal control unit 20 mobile terminal 21 prohibition signal control Unit 22 power supply unit 23 reception unit 24 transmission unit 25 wireless control unit 30 prohibition area 31 prohibition signal 32 transmission permission signal 33 power stop signal 34 normal signal 35 specific signal

Claims (6)

[Claims] 1. A mobile communication device, wherein a radio wave is not output when a radio wave of a predetermined frequency is being received. 2. A receiving section for obtaining a reception signal from an antenna, a transmission section for outputting a signal to be transmitted as a transmission signal from the antenna when receiving a transmission permission signal which is a signal for permitting a transmission operation, A wireless control unit that controls the operation of the unit and the transmitting unit and outputs the transmission permission signal when the transmitting unit wants to perform a transmitting operation; and a specific signal receiving antenna that receives the radio wave of the predetermined frequency. And a specific signal receiving unit that outputs a prohibition signal indicating that the output of the radio wave is prohibited when the specific signal receiving antenna is receiving the radio wave of the predetermined frequency; Prevents the transmission control signal output by the wireless control unit from being output to the transmission unit while outputting the prohibition signal, and the specific signal reception unit outputs the prohibition signal. Mobile communication device, characterized in that it and a prohibition signal controller of said transmission permission signal wireless control unit has output so as to output to the transmission unit when no. 3. A power supply unit for supplying power when a power stop signal is not received, a receiving unit supplied with power from the power supply unit and receiving a reception signal from an antenna, and a power supply unit supplied with power from the power supply unit to perform a transmission operation. A transmitting unit that outputs a signal to be transmitted as a transmission signal from the antenna when receiving a transmission permission signal that is a signal for permitting, a power supply unit that is supplied with power, and operates the receiving unit and the transmitting unit. A wireless control unit that outputs the transmission permission signal to the transmission unit when the control unit wants the transmission unit to perform a transmission operation, a specific signal reception antenna that receives a radio wave of the predetermined frequency, and the specific signal. A specific signal receiving unit that outputs a prohibition signal indicating that the output of the radio wave is prohibited when the receiving antenna is receiving the radio wave of the predetermined frequency, and the specific signal receiving unit is When the prohibition signal is being output, the power supply stop signal indicating that the power supply to the transmitting unit, the reception unit, and the wireless control unit is stopped is output, and the specific signal receiving unit outputs the prohibition signal. And a prohibition signal control unit that releases the output of the power stop signal when the power is not being output. 4. A specific base station which transmits the radio wave of the predetermined frequency to instruct the mobile communication device not to output a radio wave, and the mobile communication device according to claim 1. Mobile communication system characterized by the following. 5. A specific base station which transmits the radio wave of the predetermined frequency to instruct the mobile communication device not to output a radio wave, and the mobile communication device according to claim 2. Mobile communication system characterized by the following. 6. The mobile communication device according to claim 3, further comprising: a specific base station that transmits the radio wave of the predetermined frequency in order to instruct the mobile communication device not to output a radio wave. Mobile communication system characterized by the following.