Mobile Device Radio Power Control via Battery Negotiation
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Solution Overview
Problem
Wireless communication devices operating at full power to maximize range consume battery charge quickly, leading to reduced device functionality and inefficient energy use, especially when connected to peer devices or access points.
Innovation Solution
A mobile device with a processor, battery monitor, and inertial measurement unit that negotiates and adjusts wireless transceiver power output based on battery charge level, movement data, and received signal strength indication (RSSI) measurements, along with sensor data, to optimize power consumption and maintain connection quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the wireless transceiver operates at full power to maximize range, then the radio coverage area is increased, but the battery charge is depleted more quickly
Solution Approach 1:
The patent implements dynamic power adjustment by continuously monitoring battery charge levels and automatically negotiating power output levels with connected devices. The system transitions from static full-power operation to dynamic adaptive power control, adjusting the radio coverage area based on real-time battery status to resolve the contradiction between maintaining coverage and conserving energy.
Solution Approach 2:
The system employs feedback mechanisms by monitoring battery charge levels and using this information to adjust transceiver power output. The processor receives battery status feedback and initiates power level negotiations with connected devices, creating a closed-loop control system that balances coverage requirements with energy conservation goals.
2Reliability
If the wireless transceiver operates at full power to establish maximum range connections, then connection reliability is improved, but the device functionality duration is reduced
Solution Approach 1:
The system dynamically adjusts power output based on battery charge thresholds, maintaining full power operation only when sufficient charge is available. When battery charge falls below predetermined thresholds, the system automatically negotiates reduced power levels, thereby extending device functionality duration while preserving connection reliability when energy permits.
Solution Approach 2:
The patent changes the power output parameter adaptively based on battery charge levels. By modifying this critical parameter in response to energy availability, the system ensures connection reliability is maintained when possible while extending operational duration through reduced power consumption when battery charge is low.
3Adaptability or versatility
If the wireless transceiver operates at full power during scanning operations, then access point discovery capability is improved, but the battery charge is depleted more quickly
Solution Approach 1:
The system performs scanning operations at full power only when battery charge is sufficient, using partial action selectively. When battery charge is adequate, full-power scanning provides comprehensive access point discovery. When charge is low, the system reduces scanning power to conservation levels, balancing discovery capability with energy preservation.
Data Source
AI summary
A mobile device includes a wireless transceiver operative to establish a wireless connection with a connected device. The connected device may be either a peer-to-peer device or an access point. The mobile device also includes a battery monitor and a processor, operatively coupled to the wireless transceiver and to the battery monitor. The processor is operative to obtain a charge level from the battery monitor, and negotiate with a connected device for a transceiver power output level based on the charge level. The processor is also operative to control the wireless transceiver to reduce the wireless transceiver power output to the negotiated transceiver power output level in response to an acknowledgement message from the connected device.