Motion-Adaptive Radio Scanning for Power Management
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Solution Overview
Problem
Mobile computing devices face significant power management issues due to continuous scanning for wireless signals, even when stationary in areas with little or no coverage, leading to reduced battery life and frequent recharging.
Innovation Solution
A mobile computing device with a radio module and motion detector, where a scan control module determines the device's movement status to control scanning operations, reducing or suspending scans when stationary and resuming them when moving, thereby conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous scanning for wireless signals is performed, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The scanning operation is made dynamic by adjusting its state based on device motion detection. The system transitions between active scanning and suspended scanning modes according to whether the device is moving or stationary, optimizing the balance between communication reliability and power consumption in real-time
Solution Approach 2:
The scanning parameter (operational state) is changed based on motion detection results. When the device is detected to be stationary, scanning is suspended; when motion is detected, scanning is activated. This parameter change resolves the contradiction by adapting scanning behavior to actual communication needs
2Use of energy by moving object
If scanning operations are suspended when stationary, then power consumption is reduced, but communication responsiveness may deteriorate
Solution Approach 1:
The system uses motion detection feedback to control scanning operations. The motion detector continuously monitors device state and provides feedback to the controller, which adjusts scanning status accordingly. This feedback mechanism ensures scanning resumes when needed while maintaining power savings during stationary periods
Solution Approach 2:
The motion detector performs preliminary detection of device motion before scanning is activated. This preliminary action allows the system to proactively resume scanning when motion is detected, ensuring communication responsiveness is maintained without requiring continuous scanning
Data Source
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AI summary
Techniques to manage power based on motion detection are described. For example, a mobile computing device may include a radio module having a communications failure event detector operative to detect a communications failure event, a motion detector operative to detect motion, and a processor coupled to the radio module and the motion detector. The processor operative to execute a scan control module to determine the mobile computing device is moving or stationary, and control scanning operations by the radio module in accordance with the determination. Other embodiments are described and claimed.