JP2570643B2 - Power supply control method and apparatus for mobile radio telephone terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply voltage control method and apparatus for a next-generation cordless telephone and other mobile radio telephone terminals, and more particularly, to a life extension process when the power supply voltage drops.

[0002]

2. Description of the Related Art Conventionally, as to a method of controlling a power supply voltage of a mobile radio telephone terminal of this kind, as disclosed in Japanese Patent Application Laid-Open No. Sho 60-130931, a terminal monitors a radio wave intensity received from a base station. When the received radio wave intensity is reduced, the transmission output is increased. Conversely, when the received radio wave intensity is increased, the transmission output is reduced, thereby preventing the battery voltage from lowering.

As disclosed in Japanese Patent Application Laid-Open No. 3-182129, an alarm signal is generally sent out to warn a user when the power supply voltage of a terminal decreases and the received radio wave intensity decreases. there were.

[0004]

In the above-mentioned conventional mobile radio telephone terminal, the transmission output control of the terminal performs a fixed process irrespective of the remaining battery level of the terminal. Therefore, even when the remaining battery power is low, the output of the terminal increases until it moves away from the base station with which it is communicating at that time and moves to another base station area, increasing the battery consumption of the terminal and making a call. There was the disadvantage that the possible time was reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply voltage control method and apparatus for a mobile radio telephone terminal that reduce power consumption during a call and increase a communicable time when the power supply voltage of the mobile radio telephone terminal drops. is there.

[0006]

A power supply voltage control method for a mobile radio telephone terminal according to the present invention comprises the steps of monitoring a power supply voltage of a mobile telephone terminal during a call based on a predetermined threshold value.
Sending a power supply voltage drop signal when the power supply voltage falls below the threshold value; detecting the power supply voltage decrease signal by a switch connected to the call and accumulating the call signal quality at that time; When the signal quality is improved from the stored call signal quality, the exchange outputs a battery save signal notifying the call signal quality increase to the mobile telephone terminal; When the mobile radio telephone terminal receives power, the mobile radiotelephone terminal turns off the power, resets the accumulation of the call signal quality of the exchange, and cancels the monitoring of the call signal quality.

The power supply voltage control device for a mobile radio telephone terminal according to the present invention monitors the power supply voltage on the basis of a predetermined threshold value, and when the power supply voltage falls below the threshold value, A battery control unit for transmitting a voltage drop signal; a control unit for receiving a power supply voltage drop signal transmitted by the battery control unit and transferring the signal to an exchange connected to a call; and the battery control unit based on notification of the exchange. And a transmission output control unit for controlling the output of the battery according to the instruction of the power supply. A memory for storing the call quality at the time of detection of the lowered signal and its storage means, and after storing the call quality, when the call signal quality is monitored and the call signal quality is improved from the quality, An improvement notifying means for outputting a battery save signal for notifying a rise in the talk signal quality, and a means for deleting the talk signal quality accumulation relating to the call when receiving the call end signal of the call and canceling the talk signal quality monitoring. I have.

[0008]

When the power supply voltage of the terminal is lowered, a power supply voltage drop signal is notified to the exchange, and the exchange accumulates the call signal quality at that time, maintains the call in the quality state, and establishes a relationship with the base station. If the call signal quality is improved, etc., a battery save signal is sent to the terminal to instruct the terminal to lower the call quality, and the terminal side lowers the transmission output by one rank to maintain the call, thereby extending the battery life. You can extend the talk time.

[0009]

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

FIG. 1 is a block diagram of an apparatus to which a power supply voltage control method for a mobile radio telephone terminal according to the present invention is applied.
FIG. 3 is a flowchart of terminal transmission output control in the terminal, and FIG. 3 is a flowchart of terminal transmission output control in the exchange.

The power supply voltage control device 6 of the mobile radiotelephone terminal monitors a power supply voltage based on a predetermined threshold and, when the power supply voltage falls below the threshold, sends a power supply voltage decrease signal to a battery control unit. 2, a control unit 5 for receiving a power supply voltage drop signal sent from the battery control unit and transferring the signal to a switch connected to the telephone, and a switch 7
And a transmission output control unit 3 that controls the output of the battery by one step in accordance with the instruction of the battery control unit 2 by the notification of the above.

On the other hand, in the exchange, a power supply voltage drop signal detecting section 31 for detecting a power supply voltage drop signal for the mobile telephone terminal which is connected for exchange and is in communication, and stores the call signal quality when the power supply voltage drop signal is detected. After accumulating the call signal quality, the memory, 32, and the storage unit 33 monitor the call signal quality, and output a battery save signal for notifying an increase in the call signal quality when the call signal quality is improved from the quality. It has a notifying section 34 and an erasing section 35 for erasing the call signal quality accumulation related to the call when receiving the call end signal of the call.

Next, the operation of this embodiment will be described with reference to FIGS.

Now, the mobile radio telephone terminal 6 is in a communication state via the exchange 7 and the base station 8, and the control unit 5 measures the radio wave intensity received from the base station 8 and transmits the result to the base station 8
Has reported. The voltage of the battery 4 of the terminal is monitored by the battery control unit 2. If the voltage of the battery 4 decreases during a call, the voltage is compared with a threshold by the voltage monitoring process of the battery control unit 2 (step 11). The conventional transmission voltage control step 2 for controlling the transmission output based on the received radio wave intensity is performed. When the transmission voltage is lower than the threshold value, a battery alarm signal indicating a decrease in the battery voltage of the terminal is sent from the battery control unit 2 to the exchange 7. Output via the control unit 5 (steps 13, 1
4). When the exchange 7 detects the battery alarm signal (step 21), the telephone call signal quality at that time is stored in the memory 32.
(Step 22), and then monitor the call quality. If an improvement in speech signal quality is detected (step 2)
3), a battery save signal is sent from the improvement notification unit 34 to the terminal (step 24). When the terminal 6 receives the battery save signal (step 15), the control unit 5 issues a reception notification to the battery control unit 2, and the battery control unit 2 issues a transmission output reduction request to the output control unit 3 (step 16). . During the call, the monitoring of the call signal quality is further continued (step 26). When the call disconnection signal arrives, the call is disconnected, the accumulation of the call signal is deleted by the erasing unit 35, and the call signal quality monitoring is canceled. On the other hand,
When the call ends and the use of the battery ends, the control operation ends, and until then, reception of a battery save signal from the exchange is monitored (steps 15, 16, and 17).

[0015]

As described above, the present invention monitors the power supply voltage of a terminal and, when the power supply voltage drops below a predetermined threshold value, sends a power supply voltage reduction signal to the exchange, and the exchange checks the quality of the communication signal at that time. After registering, the exchange monitors the subsequent call signal quality, and when the quality is higher than the registered quality, the battery save signal is sent to the terminal to suppress the transmission power, so that the battery life can be extended. .

[Brief description of the drawings]

FIG. 1 is a block diagram of an apparatus to which a terminal control method for a mobile radio telephone according to the present invention is applied.

2 is a flowchart of transmission output control of battery control in the mobile radio telephone terminal shown in FIG.

FIG. 3 is a flowchart of terminal battery control in the exchange 7 shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 output control unit 2 battery control unit 3 transmission output control unit 4 battery 5 control unit 6 terminal 7 exchange 8 base station 31 power supply voltage drop signal detection unit 32 memory 33 storage unit 34 erasure unit

Claims (2)

(57) [Claims] 1. A power control method for a next-generation cordless telephone and other mobile radiotelephone terminals, comprising: monitoring a power supply voltage of a mobile telephone terminal during a call based on a predetermined threshold value; Sending a power supply voltage drop signal when the voltage drops below a threshold; and a switch connected to the call detects the power supply voltage drop signal and stores the call signal quality at that time. Monitoring the quality, and when the quality is improved from the accumulated call signal quality, outputting a battery save signal notifying the increase in the call signal quality to the mobile telephone terminal; A step of lowering the transmission output upon receiving the battery save signal; A method for controlling the power supply voltage of a mobile radio telephone terminal, comprising the steps of resetting accumulation of signal quality and canceling monitoring of call signal quality. 2. A power supply voltage control device for a next-generation cordless telephone and another mobile radio telephone terminal, wherein the telephone terminal monitors a power supply voltage based on a predetermined threshold, and controls the power supply voltage. A battery control unit for transmitting a power supply voltage decrease signal when the power supply voltage decrease signal is lower than the threshold value; and a control unit for receiving the power supply voltage decrease signal transmitted by the battery control unit and transferring the power supply voltage decrease notification to the exchange connected to the call. And a transmission output control unit for suppressing the output of the battery according to the instruction of the battery control unit based on a notification from the exchange. Power supply voltage drop signal detecting means for detecting the power supply voltage drop signal, a memory and storage means for storing a call signal quality at the time of detecting the power supply voltage drop signal, After the quality accumulation, the call signal quality is monitored, and when the call signal quality is improved from the quality, an improvement notifying unit that outputs a battery save signal for notifying an increase in the call signal quality, and when the call end signal of the call is received. A power supply voltage control device for a mobile radio telephone terminal, comprising: means for erasing the call signal quality accumulation relating to the call and releasing the call signal quality monitoring.