JP2000252916A - Radio telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio telephone device which maintains stable operation for a long time by preventing the radio telephony equipment from falling into the maximum transmission power holding state under the control of a base station. SOLUTION: A control part (CNT) 21 starts counting after setting a timer (TM) 26 to zero when a changed transmission power value exceeds a set value, and it executes the processing to reduce the transmission power when the counted value of the timer (TM) 26 exceeds a preliminarily determined timer count set value stored in a storage part (TBL) 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio telephone having a function of variably controlling transmission power according to transmission power control from a base station.

[0002]

2. Description of the Related Art As shown in FIG. 8, in a communication system in which wireless telephones (MS) serving as terminals communicate with each other via a base station (BTS), transmission power control from the base station (BTS) is performed. A system having a function of variably controlling transmission power of a wireless telephone (MS) in a communication operation state (communication state) based on a signal has been realized.

In such a communication system, when a wireless telephone (MS) moves away from a wireless area (hereinafter, referred to as a cell) formed by a certain base station (BTS) during a call and arrives near an edge of the cell. Or the base station (BTS)
Improves the SNR (signal-to-noise ratio) of a base station (BTS) over a busy wireless telephone (MS), for example, when there are many other busy wireless telephones (MS) In order to make the wireless line more reliable, a control signal is sent to the wireless telephone (MS) so as to increase the power (transmission power) of the transmitter in the wireless telephone (MS).

By the way, if the electric field between the base station (BTS) and the radio telephone (MS) further weakens, it is assumed that the radio telephone (MS) during a call is completely outside the cell of the base station (BTS). The communication line is disconnected upon recognition, but on the other hand, the wireless line with the base station (BTS) is maintained even if data errors frequently occur while the wireless telephone (MS) outputs the maximum transmission power. Possible situations can occur.

At this time, a radio telephone (MS) and a base station (B)
The radio telephone (MS) has to maintain the once set maximum transmission power state because the signal cannot be received successfully due to both data errors with the TS.

[0006] In such a state, the user cannot recognize the current state (maximum transmission power state) of the radio telephone (MS). There is no other way to get out of this state except to operate the wireless telephone (MS) from.

Further, since the radio telephone (MS) maintains the state where the transmission output is kept at the maximum, the radio telephone (MS) continues to consume a large amount of power during this period, and accordingly, the discharge amount of the battery increases significantly. Therefore, there has been a problem that the usage time of the wireless telephone (MS) is extremely reduced.

[0008]

As described above, in the prior art, the user cannot easily recognize that the radio telephone (MS) is in the maximum transmission power state under the control of the base station (BTS). The wireless telephone (MS) continues to consume a large amount of power, and accordingly, the amount of discharge of the battery increases significantly, resulting in a problem that the usage time of the wireless telephone (MS) is extremely reduced.

The present invention has been made in view of the above circumstances,
In a radiotelephone having a function of variably controlling transmission power according to transmission power control from a base station, the radiotelephone is controlled under the control of the base station to avoid an inconvenience of falling into a maximum transmission power continuous state for a long time. It is an object of the present invention to provide a wireless telephone capable of maintaining stable operation over a wide range.

[0010] Further, the present invention provides the following in a call mode:
Under the control of the base station, when the radiotelephone falls into the maximum transmission power continuation state, the user can arbitrarily select any transmission power reduction means, and the selection immediately exits from the maximum transmission power continuation state. It is an object of the present invention to provide a wireless telephone capable of performing such operations.

[0011] Furthermore, the present invention provides the following in a call mode:
When the radiotelephone falls into the maximum transmission power continuous state under the control of the base station, the state is notified to the user in real time, and the radio can immediately exit from the maximum transmission power continuous state by the user's selection operation. It is intended to provide a telephone.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a radio telephone capable of changing transmission power based on a transmission power control signal from a base station. Using the transmission power set value as a judgment factor
A means for informing that the transmission power is controlled on the device side independently of the control from the base station at least based on the program control, and that the radio telephone sets the maximum transmission under the control of the base station in the call mode. It is characterized by having one of a means for notifying a state of falling into a power continuation state, a function of automatically changing and setting transmission power on the device side, and a means of automatically shifting an operation mode on the device side. .

That is, according to the present invention, in a wireless telephone having a function of variably controlling transmission power in accordance with transmission power control from a base station, a set value of transmission power and a timer count setting for transmission power control are provided. Means for storing the respective values, and when the transmission power exceeds the set value, performs a count operation based on the timer count set value, and after the count is completed,
Means for executing processing for reducing transmission power.

According to the present invention, there is provided a radio telephone having a function of variably controlling transmission power in accordance with transmission power control from a base station, a means for judging that the transmission power is in a maximum output state for a predetermined time, Means for executing processing for reducing transmission power at the time of the determination.

[0015] In the above-mentioned radio telephone, the processing for reducing the transmission power includes, at least, a specific display element indicating that the transmission power is controlled by the device side without being controlled by the base station. Means for driving and informing, means for informing by an audible sound that the transmission power is controlled on the device side without control from the base station, and means for transmitting power on the device side without control from the base station. It is characterized by being provided with any means for notifying the controllable state by at least deterioration of the image quality of the display unit displaying characters or graphics, or full-screen flashing, or partial-screen flashing. .

Further, in the above-mentioned radio telephone, the processing for reducing the transmission power is automatically notified after the fact that the transmission power is controlled by the device side without being controlled by the base station. It is characterized by comprising means for shifting to a standby mode.

Further, in the above-mentioned radio telephone, the process for reducing the transmission power is performed by notifying that the transmission power is controlled by the device side without being controlled by the base station. Means for automatically shifting down the transmission power until a control instruction to lower the transmission power is provided.

In the above-mentioned radio telephone, the processing for reducing the transmission power may include a means for notifying that the transmission power is controlled by the mobile phone side without being controlled by the base station; Operation input means for instructing transition to another operation mode with reduced power, operation input means for instructing transition to a set value of transmission power, and operation for instructing transition to another operation mode with reduced transmission power When there is an input, processing means for shifting the operation mode to another preset operation mode, and when there is an operation input for instructing the shift to the set value of the transmission power, the transmission power is reduced from the current transmission power. Processing means for shifting to a low preset transmission power.

In the above-mentioned radiotelephone, the processing for reducing the transmission power may include a means for notifying that the transmission power is controlled on the device side without control from the base station; Means for judging whether or not a specific operation mode with reduction is set, and shifting to a standby mode when the specific operation mode is set.

In the above-mentioned radio telephone, the processing for reducing the transmission power may include a means for notifying that the transmission power is controlled by the mobile phone side without being controlled by the base station; Means for determining whether or not a specific operation mode with a reduction is set, and shifting down transmission power when the specific operation mode is set.

Further, in the above-mentioned radio telephone, the processing for reducing the transmission power includes a means for notifying that the transmission power is controlled on the device side without control from the base station, Means for prohibiting the transmission of excluded data.

In the above-mentioned radio telephone, at least one of the display means and the sound output means is set to a specific operation state in the processing for reducing the transmission power, and the maximum transmission power is controlled under the control of the base station. It is characterized in that it comprises means for notifying the outside of the state of the call mode that has fallen into the continuous state.

In the wireless telephone having the function of variably controlling the transmission power in accordance with the transmission power control from the base station, the wireless telephone has the processing means for reducing the transmission power as described above. In this way, the inconvenience of falling into the maximum transmission power continuity state under the above control can be reliably avoided, and stable operation can be maintained for a long time.

Also, in the call mode, when the radiotelephone falls into the state of maximum transmission power under the control of the base station, the user can arbitrarily select any transmission power reduction means. As a result, it is possible to immediately escape from the maximum transmission power continuation state, and thus it is possible to maintain a stable operation for a long time.

Further, in a call mode, when the radiotelephone falls into a state where the maximum transmission power is maintained under the control of the base station, the state is immediately notified to the user to prompt the user to perform a selection operation. As a result, since it is possible to immediately escape from the maximum transmission power continuous state, it is possible to maintain a stable operation for a long time.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a wireless telephone (MS) having a function of variably controlling transmission power according to transmission power control from a base station according to an embodiment of the present invention.

In the figure, reference numeral 10 denotes a radio telephone (MS),
Antenna duplexer (DUP) that discriminates transmission and reception data
11, a transmitting / receiving antenna 12 connected to an antenna duplexer (DUP) 11, a receiving circuit (RX) 13 for converting a received signal input via the antenna duplexer (DUP) 11 to frequency and generating received data, receiving A demodulation circuit (DEM) 14 for generating an analog audio signal from data, a speaker (SP) 15 for outputting demodulated audio, a microphone (MIC) 16 for inputting audio, and a modulation circuit (for modulating the frequency of the input audio signal) MOD) 17, a transmission circuit (TX) 18 for power amplifying a wireless carrier signal obtained from the modulation circuit (MOD) 17, a control unit (CNT) 21 for controlling the entire wireless telephone, and generating local oscillation signals for transmission and reception. Frequency synthesizer (SYN) 22, telephone number,
Key input section (KEY) 2 for inputting messages and the like
3. A display unit (LCD) 24 for displaying a guide message, a received message, etc., a notification sound output unit (MD) 25 for outputting a melody sound or the like, and the transmission power is controlled by the base station (BTS) 30 regardless of control from the base station (BTS) 30. (TM) 26 and a storage unit (TBL) 27, which are provided for processing for control by the base station, and a state in which transmission power is controlled on the machine side without control from the base station (maximum under control of the base station). A display element (LE) for notifying the outside that the transmission mode is in the transmission power sustained state).
D) 28 and the like.

In FIG. 1, a base station (BT) (not shown)
The wireless carrier signal transmitted from S) via the wireless channel is received by the antenna 12, and then received by the antenna duplexer (D
UP) 11 to a receiving circuit (RX) 13,
After being mixed with the reception local oscillation signal output from the frequency synthesizer (SYN) 22, the demodulation circuit (DE)
M) 14. Further, the audio signal demodulated by the demodulation circuit (DEM) 14 is supplied to a speaker (SP) 15 via an audio amplifier (not shown) and output as a loudspeaker.

An audio signal input from a microphone (MIC) 16 is input to a modulation circuit (MOD) 17 via an audio amplifier (not shown), is converted into an analog signal, and is then transmitted to a transmission circuit (TX) 18. Is input to
The analog audio signal input to the transmission circuit (TX) 18 is mixed with the transmission local oscillation signal output from the frequency synthesizer (SYN) 22, converted to a radio carrier frequency, and then power-amplified by the transmission power amplifier 18a. The signal is transmitted from the antenna (ANT) 12 to the base station (BTS).

Here, the transmission power amplifier 18a provided in the transmission circuit (TX) 18 includes a control unit (CNT) 21
This is a variable-type power amplifier whose transmission power is controlled under the above control, and the transmission power is variably controlled according to a transmission power control signal transmitted from a base station (BTS).

The variable transmission power control means at this time will be described with reference to FIGS.

FIG. 2 shows the wireless telephone (M) shown in FIG.
S) is a sequence chart showing a processing loop configuration for explaining the operation of variable control of transmission power between the base station (BTS) 30 and the base station (BTS) 30, and the same reference numerals are given to the same parts as those in FIG. are doing.

FIG. 3 is a diagram showing a format of a signal transferred on the processing loop of the variable transmission power control.

The base station (BTS) 30 is a radio telephone (M
S) The received data of 10 is converted into a noise reduction circuit (LNA) 34,
And an SNR measurement unit 36 via a demodulation circuit (DEM) 35
And measures the SNR of the wireless link. Further, the control unit (CNT) 37 compares the measured SNR value with the SNR value necessary for maintaining the communication quality, and sends a message in the transmission power control bit (TPC) that "increases / decreases" the transmission power. And the signal processing circuit (SPC) 3
1. Modulation circuit (MOD) 32 and power amplifier (PA)
33 to the wireless telephone (MS) 10.

The radio telephone (MS) 10 controls the transmission power control bit (TPC) via a noise reduction circuit (LNA) 13 a provided in a reception circuit (RX) 13 and a demodulation circuit (DEM) 14. (CNT) 21. The control unit (CNT) 21 decodes the received transmission power control bit (TPC) and transmits the transmission circuit (TX) 18
Is variably controlled based on the value of the transmission power control bit (TPC) to "up / down" the transmission power by a predetermined amount.

FIG. 3 shows an example of a signal format including a transmission power control bit (TPC) passed between the radio telephone (MS) 10 and the base station (BTS) 30 in the above-described transmission power variable control processing. ing. The transmission power is level-shifted from point A shown in FIG.

At this time, as described above, the wireless telephone (M
S) Even if data errors frequently occur in a state where the maximum transmission power is output by the 10), a state where the wireless channel with the base station (BTS) 30 is maintained may occur.

Therefore, in the present invention, the control unit (CN
T) 21, a timer (TM) 26 for controlling the transmission power on the device side without control from the base station (BTS) 30;
And a storage unit (TBL) 27, and a storage unit (TBL) 2
7 stores in advance a set value (threshold) of the transmission power, a set value (threshold) of the timer count, an instruction value of the transmission power to be changed, and the like.

Then, the control unit (CNT) 21 decodes the received transmission power control bit (TPC) to "up / down" the transmission power by a predetermined amount, and further changes the transmission power value, The transmission power is compared with a predetermined transmission power set value stored in the storage unit (TBL) 27.

When the changed transmission power value exceeds the set value, the timer (TM) 26 is set to zero to start counting, and the count value of the timer (TM) 26 is stored in the storage unit (TBL) 27. When a predetermined timer count set value stored in is stored, a process for reducing transmission power is executed.

Various processing examples at this time will be described with reference to FIGS.

First, the processing operation in the first embodiment will be described with reference to FIGS.

As described above, the control unit (CNT) 21 decodes the received transmission power control bit (TPC) in the communication mode, and "up / down" the transmission power by a predetermined amount. At the same time, the changed transmission power value is compared with a predetermined transmission power set value stored in the storage unit (TBL) 27 (step S in FIG. 4).
1).

Here, the changed transmission power value is equal to the set value (X
mw), the timer (TM) 26 is set to zero and the timer count operation is started (step S in FIG. 4).
2).

When the count operation of the timer (TM) 26 is executed, the updated count value and the storage (TBL) 27
Is compared with a preset timer count set value (Y) stored in the timer (step S3 in FIG. 4), and the timer (T
M) When the count value of 26 does not exceed the timer count set value stored in the storage unit (TBL) 27, the base station (BTS) 30 transmits a transmission power control bit (TPC ) Is transmitted until the timer count value of the timer (TM) 26 is updated (+
1) (Steps S4 and S6 in FIG. 4), and when the transmission power control bit (TPC) of the instruction to lower the transmission power is transmitted, the power is reduced according to the instruction (Steps S4 and S5 in FIG. 4).

In the above comparison, the timer (TM) 2
When the count value of 6 exceeds the timer count set value stored in the storage unit (TBL) 27, an internal interrupt signal is generated and a process for reducing transmission power as shown in FIG. 5 is executed. I do.

In this interrupt processing, first, the display element (LED) 28 is driven to light (or blink) to control the transmission power on the machine side without control from the base station (control of the base station). (The state of the communication mode in which the maximum transmission power has been maintained under the communication mode) (step S11 in FIG. 5).

Further, a selection operation screen for selectively inputting a process for reducing the transmission power is displayed on the display unit (LCD) 24 (step S12 in FIG. 5). Here, a selection operation screen for selecting either “transition to another operation mode with reduced transmission power” or “transition to set value of transmission power” is displayed.

Here, when "transition to another operation mode with reduced transmission power" is selected, the operation shifts to the selected other operation mode, and the display element (LED) 28 is turned off. Here, as another operation mode, a transition is made to a standby mode which is significantly lower than the current transmission power (steps S13, S15, S17 in FIG. 5).

When "transition to the set value of transmission power" is selected, the transmission power is reduced according to the instruction value of the transmission power to be changed, which is stored in the storage unit (TBL) 27 (FIG. 5). Steps S14 and S16).

As described above, in the call mode, when the radio telephone falls into the state of maximum transmission power under the control of the base station, the state is immediately notified to the user, and the user's selection operation is performed. By prompting, it is possible to immediately get out of the maximum transmission power continuous state. As a result, remarkable power saving of the wireless telephone (MS) 10 can be achieved, and stable operation for a long time can be maintained.

Next, a processing operation in the second embodiment will be described with reference to FIG. The processing up to the generation of the internal interrupt signal for reducing the transmission power is the same as that in the first embodiment described above, and a description thereof will be omitted.

In the interrupt processing according to the second embodiment, first, the display element (LED) 28 is driven to light (or blink) for a certain period of time, and the transmission power is controlled independently of the control from the base station. (In step S21 in FIG. 6) that the mobile phone is in a state controlled by the base station (a state of the communication mode in which the maximum transmission power is maintained under the control of the base station).

Further, the control unit (CNT) 21 determines whether or not the power saving (power saving) mode is set in the user use setting function of the wireless telephone (MS) 10 in advance (step in FIG. 6). S22) When the power saving (power saving) mode is set, the transmission power is automatically reduced according to the instruction value of the transmission power to be changed stored in the storage unit (TBL) 27 (step S23 in FIG. 6). .

As described above, in the communication mode, when the radio telephone falls into the state where the maximum transmission power is maintained under the control of the base station, the disadvantageous state is reliably (automatically) avoided. Therefore, stable operation can be maintained for a long time.

Next, the processing operation in the third embodiment will be described with reference to FIG. Note that the processing up to the generation of the internal interrupt signal for reducing the transmission power is the same as in each of the above-described embodiments, and a description thereof will not be repeated.

In the interrupt processing according to the third embodiment, first, the display element (LED) 28 is turned on (or blinks) for a certain period of time, and the transmission power is controlled independently of the control from the base station. Is notified to the outside (step S31 in FIG. 6) that the mobile phone is in a state of being controlled (step S31 in FIG. 6).

Further, a selection operation screen for selectively inputting a process for reducing the transmission power is displayed on the display (LCD) 24 (step S32 in FIG. 7). here,
A selection operation screen for selecting any one of “transition to another operation mode with reduced transmission power” is displayed.

Here, when "transition to another operation mode with reduced transmission power" is selected, the operation shifts to the selected other operation mode, and the display element (LED) 28 is turned off. As another operation mode, the process shifts to a standby mode which is significantly lower than the current transmission power (steps S33, S36, S38 in FIG. 7).

When "transition to the set value of transmission power" is selected and operated, the transmission power is reduced according to the instruction value of the transmission power to be changed stored in the storage unit (TBL) 27 (FIG. 7). Steps S34 and S37).

When the selection operation on the selection operation screen is not performed within the specified time, it is determined whether the power saving (power saving) mode is set (step S3 in FIG. 7).
5) When the power saving (power saving) mode is set, the transmission power is automatically reduced according to the instruction value of the transmission power to be changed, which is stored in the storage unit (TBL) 27 (step S37 in FIG. 6). .

As described above, in the communication mode, when the radiotelephone falls into the state of the maximum transmission power under the control of the base station, the state is immediately notified to the user, and the user's selection operation is performed. By prompting, it is possible to immediately get out of the maximum transmission power continuous state. As a result, remarkable power saving of the wireless telephone (MS) 10 can be achieved, and stable operation for a long time can be maintained.

In the above-described embodiment, the display element (LED) 28 is turned on (or blinks) to indicate that the transmission power is controlled on the device side without control from the base station. Notifying, but not limited to, means for notifying by audible sound using, for example, a notification sound output unit (MD) 25,
Alternatively, a specific highlighting (for example,
Means for performing image quality deterioration processing by dot / line thinning, variable contrast operation, etc., flushing processing for a part of or the entire screen, etc.) or means for notifying by any combination drive of sound, display and vibration For example, any notification means can be applied.

In addition to the above-described embodiment, for example, a storage unit (TBL) 27 stores a plurality of instruction values of the transmission power to be changed and the like, and a means for selectively using the transmission power according to the use environment setting or the like. A plurality of setting values (thresholds), timer count setting values (thresholds), and the like are prepared, and when the transmission power cannot escape from the maximum transmission power continuation state, the user makes a selection or the like, or excludes voice. A function of avoiding the state of the talk mode in which the maximum transmission power is maintained under the control of the base station may be realized when the data transmission is performed or the error frequency is used as a determination factor. The gist of the present invention is to provide a transmission power control function for exiting a state of a call mode in which a maximum transmission power is kept under control of a base station under a predetermined condition. In short, various applications are possible without departing from the gist of the present invention described above.

[0066]

As described above in detail, according to the present invention, in a radio telephone having a function of variably controlling transmission power in accordance with transmission power control from a base station, the radio telephone is controlled under the control of the base station. In this way, it is possible to reliably avoid the inconvenience of falling into the maximum transmission power continuous state, and to maintain a stable operation for a long time.

Also, in the call mode, when the radiotelephone falls into the state of maximum transmission power under the control of the base station, the user can arbitrarily select any transmission power reduction means. As a result, it is possible to immediately escape from the maximum transmission power continuation state, and thus it is possible to maintain a stable operation for a long time.

Further, when the radiotelephone falls into a state where the maximum transmission power is maintained under the control of the base station in the call mode, the state is immediately notified to the user to prompt the user to perform a selection operation. As a result, since it is possible to immediately escape from the maximum transmission power continuous state, it is possible to maintain a stable operation for a long time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a wireless telephone (MS) having a function of variably controlling transmission power according to transmission power control from a base station according to an embodiment of the present invention.

FIG. 2 shows a wireless telephone (MS) and a base station (B) shown in FIG.
FIG. 4 is a diagram showing a processing loop configuration for explaining an operation of variable control of transmission power between the transmission power and the transmission power (TS).

FIG. 3 is a diagram showing a format of a signal transferred on a processing loop of variable transmission power control shown in FIG. 2;

FIG. 4 is a flowchart for explaining a transmission power control processing operation in a call mode in the embodiment of the present invention.

FIG. 5 is a flowchart showing a transmission power control processing procedure when the transmission power is controlled on the device side without depending on the control from the base station in the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating a transmission power control processing procedure when the transmission power is controlled on the device side without depending on the control from the base station in the second embodiment of the present invention.

FIG. 7 is a flowchart showing a transmission power control processing procedure when the transmission power is controlled on the device side without depending on the control from the base station in the third embodiment of the present invention.

FIG. 8 is a view for explaining a state in which the radio telephone falls into a state where the maximum transmission power is maintained under the control of the base station in the call mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Wireless telephone (MS) 11 ... Antenna duplexer (DUP) 12 ... Antenna 13 ... Receiving circuit (RX) 14 ... Demodulation circuit (DEM) 15 ... Speaker (SP) 16 ... Microphone (MIC) 17 ... Modulation circuit (MOD) 18) Transmission circuit (TX) 18a ... Transmission power amplifier 21 ... Control unit (CNT) 22 ... Frequency synthesizer (SYN) 23 ... Key input unit (KEY) 24 ... Display unit (LCD) 25 ... Notification sound output unit (MD) 26: timer (TM) 27: storage unit (TBL) 28: display element (LED) 30: base station (BTS)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K060 BB00 CC04 CC12 DD04 HH06 LL01 LL11 MM03 NN04 NN07 5K067 BB02 CC21 DD27 EE02 EE10 FF02 FF24 FF27 FF31 GG08 HH22 HH23 KK15

Claims (12)

[Claims] In a wireless telephone having a function of variably controlling transmission power according to transmission power control from a base station, means for storing a set value of transmission power, and a timer count for transmission power control. Means for storing a set value; means for determining that the transmission power has exceeded the set value; and performing a count operation based on the set value of the timer count at the time of the determination. Means for executing processing for reducing power consumption. 2. A means for judging that a transmission power is in a maximum output state for a certain period of time in a wireless telephone having a function of variably controlling transmission power in accordance with transmission power control from a base station; A means for executing processing for reducing transmission power. 3. The processing for reducing transmission power includes:
3. The wireless telephone according to claim 1, further comprising means for driving a specific display element to notify that the transmission power is controlled on the device side without control from the base station. 4. The processing for reducing transmission power includes:
3. The wireless telephone according to claim 1, further comprising means for notifying by an audible sound that the transmission power is controlled on the device side without being controlled by the base station. 5. The processing for reducing transmission power includes:
3. The system according to claim 1, further comprising: means for notifying that the transmission power is controlled on the device side without control from the base station, and means for shifting to a standby mode after the notification.
The wireless telephone as described. 6. The processing for reducing transmission power includes:
Means for notifying that the transmission power is controlled on the device side without control from the base station; and, after the notification, means for shifting down the transmission power until there is a control instruction to reduce the transmission power from the base station. The wireless telephone according to claim 1, comprising: 7. The processing for reducing the transmission power includes a means for notifying that the transmission power is controlled by the mobile station side without control from the base station, and another operation for reducing the transmission power. An operation input means for instructing a shift to a mode, an operation input means for instructing a shift to a set value of transmission power, and an operation input for instructing a shift to another operation mode with reduced transmission power, A processing means for shifting the operation mode to another preset operation mode; and a preset transmission which lowers the transmission power to a value lower than the current transmission power when there is an operation input for instructing the transition to the set value of the transmission power. 3. The wireless telephone according to claim 1, further comprising processing means for shifting to electric power. 8. The processing for reducing transmission power includes:
Means for notifying that the transmission power is controlled on the device side without control from the base station, and means for determining whether or not a specific operation mode with reduced power consumption is set, 3. The wireless telephone according to claim 1, further comprising: means for shifting to a standby mode when a specific operation mode is set. 9. The processing for reducing transmission power includes:
Means for notifying that the transmission power is controlled on the device side without control from the base station, and means for determining whether or not a specific operation mode with reduced power consumption is set, 3. The wireless telephone according to claim 1, further comprising: means for shifting down transmission power when a specific operation mode is set. 10. A process for reducing the transmission power includes a means for notifying that the transmission power is controlled on the device side without control from the base station, and a transmission of data excluding voice is prohibited. 3. The method according to claim 1, further comprising:
The wireless telephone as described. 11. A process for reducing transmission power includes a call in which at least one of a display unit and a voice output unit is set to a specific operation state and falls into a maximum transmission power continuous state under the control of the base station. 3. The wireless telephone according to claim 1, further comprising means for notifying a mode state to the outside. 12. The processing for reducing the transmission power includes the fact that the transmission power is controlled on the device side without control from the base station, which means that at least the image quality of the display unit that displays characters or graphics is deteriorated. 3. The wireless telephone according to claim 1, further comprising means for informing by any one of screen flashing of the display unit.