Geofenced Satellite Tracking Modes for Lower UE Power Use
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Solution Overview
Problem
In certain locations with lower signal interference, such as rural areas, tracking all available satellite vehicles (SVs) for positional and navigational information leads to increased power and computing resource consumption by user equipment (UE) beyond what is necessary to meet quality and accuracy standards.
Innovation Solution
Implementing an efficient SV tracking mode that reduces the number of satellites tracked based on signal environment data, allowing UE to meet quality and accuracy thresholds with fewer SVs, including strategies like tracking only modernized signals or specific elevation angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE tracks all available satellite vehicles to meet quality and accuracy standards, then the positional and navigational information accuracy is improved, but the power and computing resource consumption increases
Solution Approach 1:
The patent applies local quality by differentiating tracking strategies based on geographic location and signal environment characteristics. The system identifies specific geographic areas where reduced tracking is permissible and applies different tracking modes (full tracking vs. reduced tracking) to different locations, allowing the UE to maintain accuracy where needed while conserving power in areas with favorable signal conditions.
Solution Approach 2:
The patent implements partial action by tracking only a subset of available satellite vehicles rather than all visible SVs. The system determines that tracking fewer satellites (partial tracking) is sufficient to meet quality thresholds in certain geographic areas, thereby reducing computational load and power consumption while maintaining acceptable positional and navigational accuracy.
2Reliability
If the UE tracks all available satellite vehicles, then the reliability of positional information is improved, but the computing resource consumption increases
Solution Approach 1:
The system applies local quality by implementing location-dependent tracking strategies. In geographic areas with favorable signal characteristics (e.g., open skies, rural locations), the system reduces the number of tracked satellites while maintaining reliability. In urban or signal-challenged areas, full tracking is maintained to ensure positional information reliability, thus optimizing the balance between reliability and computing resources based on local conditions.
Solution Approach 2:
The patent applies partial action by tracking only the minimum necessary number of satellites required to meet reliability thresholds. The system evaluates signal quality and geographic context to determine that partial tracking (tracking fewer than all available SVs) is sufficient in certain areas, thereby reducing computing resource consumption while maintaining acceptable reliability levels for positional information.
3Loss of energy
If the UE operates in a first mode of operation in geographic areas associated with that mode, then the power efficiency is improved, but the system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-identifying and storing geographic area associations with different operating modes before the UE begins navigation. The system pre-processes geographic data to map areas to appropriate tracking modes, allowing the UE to quickly determine the appropriate power-efficient mode based on current location without complex real-time analysis, thus reducing operational system complexity while maintaining power efficiency benefits.
Data Source
AI summary
An efficient satellite vehicle (SV) tracking mode that, when utilized by user equipment (UE), consumes less power and/or computing resources of the UE than a default SV tracking mode of tracking all visible SV, while maintaining consistent signal quality and/or positional, navigational, and/or timing information accuracy standards. Furthermore, use of the efficient SV tracking mode may be determined and implemented based on a signal environment associated with a location of the UE. In particular, the efficient SV tracking mode may be associated with a location based on a determination that signal quality thresholds are met during use of the efficient SV tracking mode at the location. Additionally or alternatively, the location may be associated with a geofenced area. The geofenced area may define a geographical area corresponding to implementation of the efficient SV tracking mode by a UE located within the geofenced area.