A context-aware experience sampling tool
CHI '03 Extended Abstracts on Human Factors in Computing Systems
Context-for-wireless: context-sensitive energy-efficient wireless data transfer
Proceedings of the 5th international conference on Mobile systems, applications and services
Blue-Fi: enhancing Wi-Fi performance using bluetooth signals
Proceedings of the 7th international conference on Mobile systems, applications, and services
Scaling measurement experiments to planet-scale: ethical, regulatory and cultural considerations
Proceedings of the 1st ACM International Workshop on Hot Topics of Planet-Scale Mobility Measurements
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Improving energy efficiency of location sensing on smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
The Jigsaw continuous sensing engine for mobile phone applications
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
Accurate, low-energy trajectory mapping for mobile devices
Proceedings of the 8th USENIX conference on Networked systems design and implementation
Learning to Infer the Status of Heavy-Duty Sensors for Energy-Efficient Context-Sensing
ACM Transactions on Intelligent Systems and Technology (TIST)
EnAcq: energy-efficient GPS trajectory data acquisition based on improved map matching
Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Performance of collaborative GPS localization in pedestrian ad hoc networks
Proceedings of the third ACM international workshop on Mobile Opportunistic Networks
Exploiting spatiotemporal and device contexts for energy-efficient mobile embedded systems
Proceedings of the 49th Annual Design Automation Conference
Outdoor exit detection using combined techniques to increase GPS efficiency
Expert Systems with Applications: An International Journal
Long-distance runner training system for smartphones
Proceedings of the 13th International Conference on Interacción Persona-Ordenador
Low cost positioning by matching altitude readings with crowd-sourced route data
Proceedings of the 10th International Conference on Advances in Mobile Computing & Multimedia
A context-based energy optimization algorithm for periodic localization in smartphones
Proceedings of the First ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
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We present SenseLess, a system that leverages the different energy consumption characteristics of sensors to maximise battery life in mobile-sensing applications. We use the less expensive sensors more often, thereby enabling us to use the more expensive sensors less frequently. In the context of location-aware services, experimental results indicate that for a typical indoor and outdoor walk, compared to a simple GPS-based system, our SenseLess system can reduce energy consumption by more than 58% when determining a user's location, while maintaining the fidelity of the sensed data. This extends the battery life of a typical handheld device from 9 hours to 22 hours.