A Comparison of Protocols for Updating Location Information
Cluster Computing
A Map-Based Dead-Reckoning Protocol for Updating Location Information
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
Ghosts in the machine: interfaces for better power management
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Techniques for Efficient Road-Network-Based Tracking of Moving Objects
IEEE Transactions on Knowledge and Data Engineering
ACM SIGMOBILE Mobile Computing and Communications Review
Computer Network Time Synchronization: The Network Time Protocol
Computer Network Time Synchronization: The Network Time Protocol
Energy-Efficient Monitoring of Mobile Objects with Uncertainty-Aware Tolerances
IDEAS '07 Proceedings of the 11th International Database Engineering and Applications Symposium
Proceedings of the 6th international conference on Mobile systems, applications, and services
Micro power management of active 802.11 interfaces
Proceedings of the 6th international conference on Mobile systems, applications, and services
Energy-efficient Tracking of Mobile Objects with Early Distance-based Reporting
MOBIQUITOUS '07 Proceedings of the 2007 Fourth Annual International Conference on Mobile and Ubiquitous Systems: Networking&Services (MobiQuitous)
Determining transportation mode on mobile phones
ISWC '08 Proceedings of the 2008 12th IEEE International Symposium on Wearable Computers
A taxonomy for radio location fingerprinting
LoCA'07 Proceedings of the 3rd international conference on Location-and context-awareness
SurroundSense: mobile phone localization via ambience fingerprinting
Proceedings of the 15th annual international conference on Mobile computing and networking
Performance study of active tracking in a cellular network using a modular signaling platform
Proceedings of the 8th international conference on Mobile systems, applications, and services
Energy-accuracy trade-off for continuous mobile device location
Proceedings of the 8th 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
PerPos: a platform providing cloud services for pervasive positioning
Proceedings of the 1st International Conference and Exhibition on Computing for Geospatial Research & Application
Did you see Bob?: human localization using mobile phones
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Demonstrating EnTracked a system for energy-efficient position tracking for mobile devices
Proceedings of the 12th ACM international conference adjunct papers on Ubiquitous computing - Adjunct
SensLoc: sensing everyday places and paths using less energy
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
Adaptive GPS duty cycling and radio ranging for energy-efficient localization
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
The Jigsaw continuous sensing engine for mobile phone applications
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
Cooperative transit tracking using smart-phones
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
Exposing position uncertainty in middleware
Proceedings of the 2nd International Workshop on Middleware for Pervasive Mobile and Embedded Computing
Accurate, low-energy trajectory mapping for mobile devices
Proceedings of the 8th USENIX conference on Networked systems design and implementation
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 trajectory tracking for mobile devices
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
PerPos: a translucent positioning middleware supporting adaptation of internal positioning processes
Proceedings of the ACM/IFIP/USENIX 11th International Conference on Middleware
Seeker-assisted human navigation using smart phones
Proceedings of 1st international symposium on From digital footprints to social and community intelligence
Employing user feedback for semantic location services
Proceedings of the 13th international conference on Ubiquitous computing
Enriching location information: an energy-efficient approach
Proceedings of the 13th international conference on Ubiquitous computing
A survey on energy-efficient data management
ACM SIGMOD Record
Balancing energy, latency and accuracy for mobile sensor data classification
Proceedings of the 9th ACM Conference on Embedded Networked Sensor Systems
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
A Survey of Green Mobile Networks: Opportunities and Challenges
Mobile Networks and Applications
Performance of collaborative GPS localization in pedestrian ad hoc networks
Proceedings of the third ACM international workshop on Mobile Opportunistic Networks
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
Energy efficient continuous location determination for pedestrian information systems
MobiDE '12 Proceedings of the Eleventh ACM International Workshop on Data Engineering for Wireless and Mobile Access
Capturing transitions between users' semantically meaningful places using mobile devices
Proceedings of the 1st ACM workshop on Mobile systems for computational social science
Geo-fencing: geographical-fencing based energy-aware proactive framework for mobile devices
Proceedings of the 2012 IEEE 20th International Workshop on Quality of Service
A two-layer approach for energy efficiency in mobile location sensing applications
IFIP'12 Proceedings of the 11th international IFIP TC 6 conference on Networking - Volume Part II
Greening wireless communications: Status and future directions
Computer Communications
Energy-efficient localization: GPS duty cycling with radio ranging
ACM Transactions on Sensor Networks (TOSN)
IODetector: a generic service for indoor outdoor detection
Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems
Low cost positioning by matching altitude readings with crowd-sourced route data
Proceedings of the 10th International Conference on Advances in Mobile Computing & Multimedia
Delay-Tolerant positioning for location-based logging with mobile devices
UCAmI'12 Proceedings of the 6th international conference on Ubiquitous Computing and Ambient Intelligence
Evaluation of fine-granular GPS tracking on smartphones
Proceedings of the First ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
A context-based energy optimization algorithm for periodic localization in smartphones
Proceedings of the First ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
Camazotz: multimodal activity-based GPS sampling
Proceedings of the 12th international conference on Information processing in sensor networks
Guoguo: enabling fine-grained indoor localization via smartphone
Proceeding of the 11th annual international conference on Mobile systems, applications, and services
eDoctor: automatically diagnosing abnormal battery drain issues on smartphones
nsdi'13 Proceedings of the 10th USENIX conference on Networked Systems Design and Implementation
Active tracking in mobile networks: An in-depth view
Computer Networks: The International Journal of Computer and Telecommunications Networking
Detecting and correcting WiFi positioning errors
Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing
On heterogeneity in mobile sensing applications aiming at representative data collection
Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication
ParkSense: a smartphone based sensing system for on-street parking
Proceedings of the 19th annual international conference on Mobile computing & networking
Proceedings of the 2013 ACM SIGPLAN international conference on Object oriented programming systems languages & applications
Proceedings of the Second ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems
A Generic Context-Based Architecture for Energy-Efficient Localization on Mobile Devices
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
Probabilistic Inference of Multi-Object Trajectories
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
When assistance becomes dependence: characterizing the costs and inefficiencies of A-GPS
ACM SIGMOBILE Mobile Computing and Communications Review
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An important feature of a modern mobile device is that it can position itself. Not only for use on the device but also for remote applications that require tracking of the device. To be useful, such position tracking has to be energy-efficient to avoid having a major impact on the battery life of the mobile device. Furthermore, tracking has to robustly deliver position updates when faced with changing conditions such as delays due to positioning and communication, and changing positioning accuracy. This work proposes EnTracked - a system that, based on the estimation and prediction of system conditions and mobility, schedules position updates to both minimize energy consumption and optimize robustness. The realized system tracks pedestrian targets equipped with GPS-enabled devices. The system is configurable to realize different trade-offs between energy consumption and robustness. We provide extensive experimental results by profiling how devices consume power, by emulation on collected data and by validation in several real-world deployments. Results from this profiling show how a device consumes power while tracking its position. Results from the emulation indicate that the system can estimate and predict system conditions and mobility. Furthermore they provide evidence for that the system can lower the energy consumption considerably and remain robust when faced with changing system conditions. By validation in several real-world deployments we provide evidence that the real system works as predicted by the emulation.