Dynamic GPS Location Update for Battery-Constrained Mobile Devices
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Solution Overview
Problem
Current GPS location updating methods on battery-powered mobile devices consume significant battery power, requiring a trade-off between accuracy and update frequency.
Innovation Solution
A GPS system that coarsely identifies a region occupied by a tracked device and sets an update time based on the device's speed and location, allowing for accurate location determination only when necessary, thereby minimizing battery usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS location updates are performed frequently to maintain high accuracy, then location accuracy is improved, but battery power is consumed faster
Solution Approach 1:
The patent implements dynamic GPS update intervals that adjust based on the device's current state. The system calculates an optimal update frequency considering factors like device speed, location type (indoor/outdoor), and movement patterns. This dynamic adjustment ensures high location accuracy when needed while reducing updates during stationary periods, thereby resolving the contradiction between continuous accurate tracking and battery conservation
Solution Approach 2:
The system changes the parameter of update frequency based on contextual conditions. By monitoring device state parameters (speed, location context, movement detection), the system dynamically modifies the GPS update interval parameter. This allows the system to maintain high accuracy during active movement while extending battery life during idle or predictable states
2Measurement precision
If GPS updates are performed continuously to track device movement accurately, then location tracking accuracy is improved, but battery life is reduced
Solution Approach 1:
Instead of continuous GPS operation, the patent implements periodic updates with variable intervals. The system determines optimal update periods based on device movement state, location context, and tracking requirements. This periodic approach maintains sufficient tracking accuracy while allowing the GPS hardware to remain inactive during intervals, significantly extending battery life
Solution Approach 2:
The system applies partial action by performing GPS updates only when necessary rather than continuously. By using sensors like accelerometers and gyroscopes to detect movement states, the system triggers GPS updates only during periods requiring location tracking, reducing overall power consumption while maintaining adequate tracking accuracy
3Productivity
If high-frequency GPS updates are enabled to maintain accurate location data, then location update frequency is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic update frequency adjustment based on real-time device state. The system monitors movement patterns, location context, and application requirements to dynamically set optimal update frequencies. This ensures high productivity (update frequency) when needed while reducing power consumption during periods requiring fewer updates
Data Source
AI summary
A global positioning system (GPS) is provided and includes a processing system that is in communication with a network and memory. The memory has executable instructions stored thereon, which, when executed, cause the processing system to control the network to coarsely identify a region currently occupied by a tracked device and determine an accurate location of the tracked device responsive to a predefined event.