Battery Slump Management via Voltage Threshold Monitoring
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Solution Overview
Problem
Mobile communication devices face inefficiencies and reduced battery life due to battery voltage slump during high power transmission, leading to excessive power dissipation and non-compliance with standards, as conventional power management schemes struggle to accurately set minimum voltage levels considering varying battery conditions.
Innovation Solution
A system and method for monitoring battery voltage levels during transmission, sending a signal to terminate the transmission if the voltage crosses a predetermined threshold, thereby managing battery slump and optimizing power usage without powering down the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power amplification stage is provided with a power supply voltage sufficient for accommodating the specified maximum instantaneous power level, then the amplifier can operate without saturation or undue distortion, but excess power is dissipated as heat resulting in shorter battery life
Solution Approach 1:
The patent applies dynamic voltage scaling by adjusting the power supply voltage to the power amplification stage based on real-time monitoring of battery voltage levels during transmission. When battery voltage remains above the threshold, the amplifier receives sufficient voltage for reliable operation; when voltage drops below the threshold, the supply voltage is reduced, thereby dynamically adapting power consumption to actual operational needs and extending battery life.
2Reliability
If a lower PA operating voltage is assumed to meet the worst case scenario, then compliance with standards is achieved, but efficiency is sacrificed and excess power is dissipated
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors the battery voltage level during transmission and compares it against a predetermined threshold. Based on this feedback, the system dynamically adjusts the power supply voltage to the power amplification stage, ensuring compliance with standards when voltage is sufficient while avoiding excessive power dissipation when voltage levels are adequate for operation.
3Reliability
If the maximum instantaneous power is increased to accommodate high PAPR signals, then signal transmission quality is maintained, but the current drain on the battery increases causing voltage slump
Solution Approach 1:
The patent applies preliminary action by monitoring battery voltage levels before they drop to critical thresholds. The system proactively adjusts the power supply voltage to the power amplification stage based on predicted battery performance, preventing voltage slump before it occurs and maintaining signal transmission quality without excessive current drain.
Data Source
AI summary
A system and method for managing battery slump in a battery-powered communications device including: an input configured for receiving battery voltage level information; an output configured for sending a signal for terminating a transmission; and a controller connected to the input and the output and configured to receive the battery voltage level information from the input; monitor the battery voltage level information; and send a signal via the output to terminate a transmission if the battery voltage level information crosses a predetermined threshold during the transmission. In particular, the system and method may further include an input connected to the controller and configured for receiving a signal indicating when a transmission is beginning or occurring and the controller is further configured to receive and monitor the battery voltage level information only when the transmission is occurring.