Patent ID: 8032189

Claim:
A system for managing battery slump in a battery-powered communication device comprising an amplifier for amplifying wireless communication signals being transmitted by the communication device, the system comprising: an input signal terminal for receiving battery voltage level information for a battery of the communication device; an output signal terminal for sending a signal for terminating a given transmission of a wireless communication signal being transmitted by the communication device, wherein the battery slump is caused by current drain on the battery during the given transmission; a controller connected to the input signal terminal and the output signal terminal, wherein the controller: calculates a transmit power level required for the given transmission, and a threshold voltage based upon the calculated transmit power level, the threshold voltage corresponding to a minimum power supply voltage of the amplifier required for the given transmission; receives the battery voltage level information from the input signal terminal; monitors the battery voltage level information, during the given transmission of the wireless communication signal; and sends a signal via the output signal terminal to terminate the given transmission of the wireless communication signal if the battery voltage level information crosses the calculated threshold voltage during the given transmission of the wireless communication signal; and a trigger input terminal connected to the controller for receiving a signal indicating when the given transmission of the wireless communication signal is beginning; wherein the controller receives the battery voltage level information when the given transmission of the wireless communication signal is occurring, and delays monitoring of the battery voltage level information for a predetermined time after receiving the signal indicating when the given transmission of the wireless communication signal is beginning.