Mobile Location Determination Using Periodic GPS Activation
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Solution Overview
Problem
Location-aware applications on mobile devices consume significant battery life and data due to constant GPS usage for location tracking, leading to battery drain and increased data usage, which limits their adoption.
Innovation Solution
A method utilizing both terrestrial and satellite-based location systems, where the mobile device determines the optimal time to recheck its location based on battery level, movement speed, accuracy, and other criteria, activating the GPS only when necessary, and using terrestrial systems for reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS is constantly activated for location tracking, then location accuracy is improved, but battery consumption increases
Solution Approach 1:
The patent implements periodic location determination by calculating wait periods between GPS activations based on multiple criteria including battery level, movement speed, and location accuracy. Instead of constant GPS activation, the system periodically determines location only when necessary, thereby maintaining accuracy requirements while significantly reducing battery consumption.
2Measurement precision
If GPS is constantly activated for location tracking, then location accuracy is improved, but data usage increases
Solution Approach 1:
The system reduces data transmission by determining location periodically rather than continuously. Location data is transmitted to remote systems only at calculated intervals based on wait period criteria, significantly reducing the quantity of location data transmitted while maintaining necessary location tracking accuracy.
3Measurement precision
If location determination frequency is increased, then location tracking accuracy is improved, but battery life is reduced
Solution Approach 1:
The patent implements dynamic adjustment of location determination frequency by calculating wait periods based on real-time criteria including battery level, movement speed, and location accuracy requirements. The system adapts the frequency of GPS activations dynamically, increasing frequency when accuracy is critical and decreasing frequency when battery conservation is prioritized, thereby optimizing both tracking accuracy and battery life.
Solution Approach 2:
The system uses periodic location determination with calculated wait periods between GPS activations. This periodic approach maintains location tracking accuracy by determining location at appropriate intervals while significantly extending battery life compared to continuous activation.
4Measurement precision
If location determination frequency is increased, then location tracking accuracy is improved, but data transmission increases
Solution Approach 1:
The system implements periodic location data transmission by calculating wait periods between location determinations and transmissions. Location data is transmitted only when necessary based on the calculated wait period criteria, reducing the total volume of location data transmitted while maintaining tracking accuracy requirements.
Data Source
AI summary
Method/system for determining location of a mobile device having modules that are part of a terrestrial-based location system and part of a satellite-based global positioning system. The system comprises a remote system. The mobile device activates one of the location determining modules of the mobile device, the type of activated module selected according to a location module type datum in a message received from the remote system. The mobile device establishes a connection with the remote system and the remote system receives the determined location. A type of location determining module next used by the mobile device is determined or a period of time before the module device next determines location is determined. A message is sent from the remote system to the mobile device, comprising determined type of location determining module to be next used and/or the period of time before the module device next determines its location.