Adaptive Wireless Signal Testing Frequency Control
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Solution Overview
Problem
Mobile devices drain battery power excessively when searching for wireless communications signals in areas out of network range, as they continually attempt to connect without changing conditions.
Innovation Solution
A method and apparatus that adjust the frequency of testing for a wireless communications signal based on motion data and changes in signal strength, using components like accelerometers and timers to reduce unnecessary searches when the device is idle or in a moving vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cell phone frequently and continually checks for a communications signal, then the likelihood of detecting available service increases, but battery power is significantly drained
Solution Approach 1:
The patent applies dynamics by making the signal checking frequency adaptive rather than static. The system dynamically adjusts the checking interval based on detected motion - when motion is detected, the phone checks signals more frequently, and when no motion is detected, it reduces checking frequency. This resolves the contradiction by optimizing both signal detection reliability and battery consumption based on real-time conditions.
Solution Approach 2:
The patent changes the parameter of signal checking frequency based on motion detection. By using an accelerometer to detect motion and adjusting the signal checking interval accordingly, the system transforms a fixed parameter into a variable one that adapts to usage conditions, thereby reducing unnecessary battery consumption while maintaining adequate signal detection.
2Productivity
If the cell phone continues to search for signal in a no service area, then it maintains active connection attempts, but battery power is wasted when conditions have not changed
Solution Approach 1:
The patent extracts the motion detection function from the overall signal searching system. By using the accelerometer to detect whether the phone is moving, the system can determine when to continue or pause signal searching. When no motion is detected for a threshold period, the phone stops or reduces signal searching, thereby eliminating wasted energy while maintaining productivity when motion indicates potential for improved signal conditions.
Solution Approach 2:
The system uses the phone's own accelerometer data to make decisions about signal searching behavior. The motion detection capability, already present in the device for other purposes, is repurposed to control signal searching, allowing the system to self-regulate its energy consumption based on its own operational state without requiring external input.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces battery drain by minimizing signal searching when the device is unlikely to regain connection, thereby conserving power in 'no service' areas.
Implementation Method 1
receiving motion data from an accelerometer
Data Source
AI summary
A method and apparatus for adjusting the frequency of testing for a wireless communications signal are described. The computer-implemented method comprises detecting a change in a wireless communications signal and adjusting a frequency of testing for the wireless communications signal. The method further comprises receiving motion data and determining, based on the motion data whether and whether to adjust the frequency of testing for the wireless communications signal.