The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
A Survey of Energy Efficient Network Protocols for Wireless Networks
Wireless Networks
WLAN Location Determination via Clustering and Probability Distributions
PERCOM '03 Proceedings of the First IEEE International Conference on Pervasive Computing and Communications
Simulating the power consumption of large-scale sensor network applications
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Sensor-assisted wi-fi indoor location system for adapting to environmental dynamics
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Enabling Energy-Efficient and Quality Localization Services
PERCOMW '06 Proceedings of the 4th annual IEEE international conference on Pervasive Computing and Communications Workshops
Power-Efficient Access-Point Selection for Indoor Location Estimation
IEEE Transactions on Knowledge and Data Engineering
InTrack: high precision tracking of mobile sensor nodes
EWSN'07 Proceedings of the 4th European conference on Wireless sensor networks
A wearable interface for topological mapping and localization in indoor environments
LoCA'06 Proceedings of the Second international conference on Location- and Context-Awareness
PERVASIVE'06 Proceedings of the 4th international conference on Pervasive Computing
MoteTrack: a robust, decentralized approach to RF-Based location tracking
LoCA'05 Proceedings of the First international conference on Location- and Context-Awareness
Relative location estimation in wireless sensor networks
IEEE Transactions on Signal Processing
Hybrid TDOA/AOA mobile user location for wideband CDMA cellular systems
IEEE Transactions on Wireless Communications
Positioning in ad hoc sensor networks
IEEE Network: The Magazine of Global Internetworking
EnTracked: energy-efficient robust position tracking for mobile devices
Proceedings of the 7th international conference on Mobile systems, applications, and services
Energy-efficient rate-adaptive GPS-based positioning for smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Movement detection for power-efficient smartphone WLAN localization
Proceedings of the 13th ACM international conference on Modeling, analysis, and simulation of wireless and mobile systems
Adaptive GPS duty cycling and radio ranging for energy-efficient localization
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
Energy-efficient collaborative tracking in wireless sensor networks
International Journal of Sensor Networks
Energy-efficient positioning for smartphones using Cell-ID sequence matching
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
Energy-efficient localization: GPS duty cycling with radio ranging
ACM Transactions on Sensor Networks (TOSN)
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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Energy efficiency and positional accuracy are often contradictive goals. We propose to decrease power consumption without sacrificing significant accuracy by developing an energy-aware localization that adapts the sampling rate to target's mobility level. In this paper, an energy-aware adaptive localization system based on signal strength fingerprinting is designed, implemented, and evaluated. Promising to satisfy an application's requirements on positional accuracy, our system tries to adapt its sampling rate to reduce its energy consumption. The contribution of this paper is fourfold. (1) We have developed a model to predict the positional error of a real working positioning engine under different mobility levels of mobile targets, estimation error from the positioning engine, processing and networking delay in the location infrastructure, and sampling rate of location information. (2) In a real test environment, our energy-saving method solves the mobility estimation error problem by utilizing additional sensors on mobile targets. The result is that we can improve the prediction accuracy by 56.34% on average, comparing to algorithms without utilizing additional sensors. (3) We further enhance our sensor-enhanced mobility prediction algorithm by detecting the target's moving foot step and then estimate the target's velocity. This method can improve the mobility prediction accuracy by 49.81% on an average, comparing to previous sensor-enhanced mobility prediction algorithm. (4) We implemented our energy-saving methods inside a working localization infrastructure and conducted performance evaluation in a real office environment. Our performance results show as much as 68.92% reduction in power consumption.