Energy-efficient Trajectory Tracking for Mobile Devices

Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  • Mikkel Baun Kjærgaard, Denmark
  • Sourav Bhattacharya, Helsinki Institute for Information Technology HIIT, Department of Computer Science University of Helsinki, Finland
  • Henrik Blunck, Denmark
  • Petteri Nurmi, Helsinki Institute for Information Technology HIIT, Department of Computer Science University of Helsinki, Finland
  • Department of Computer Science
Emergent location-aware applications often require tracking trajectories of mobile devices over a long period of time. To be useful, the tracking has to be energy-efficient to avoid having a major impact on the battery life of the mobile de vice. Furthermore, when trajectory information needs to be sent to a remote server, on-device simplification of the trajectories is needed to reduce the amount of data transmission. While there has recently been a lot of work on energy-efficient position tracking, the energy-efficient tracking of trajectories has not been addressed in previous work. In this paper we propose a novel on-device sensor management strategy and a set of trajectory updating protocols which intelligently determine when to sample different sensors (accelerometer, compass and GPS) and when data should be simplified and sent to a remote server. The system is configurable with regards to accuracy requirements and provides a unified framework for both position and trajectory tracking. We demonstrate the effectiveness of our approach by emulation experiments on real world data sets collected from different modes of transportation (walking, running, biking and commuting by car) as well as by validating with a real-world deployment. The results demonstrate that our approach is able to provide considerable savings in the battery consumption compared to a state-of-the-art position tracking system while at the same time maintaining the accuracy of the resulting trajectory, i.e., support of specific accuracy requirements and different types of applications can be ensured.
Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Mobile Systems, Applications, and Services. MobiSys '11
Number of pages14
PublisherAssociation for Computing Machinery
Publication year2011
Pages307-320
ISBN (print)978-1-4503-0643-0
DOIs
Publication statusPublished - 2011
Event9th international conference on Mobile systems, applications, and services - Bethesda, MD, United States
Duration: 28 Jun 20111 Jul 2011

Conference

Conference9th international conference on Mobile systems, applications, and services
LandUnited States
ByBethesda, MD
Periode28/06/201101/07/2011

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