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Columbus, OH
June 6, 2005 to June 10, 2005
ISBN: 0-7695-2328-5
pp: 381-390
Chenyang Lu , Washington University in St. Louis
Guoliang Xing , Washington University in St. Louis
Octav Chipara , Washington University in St. Louis
Chien-Liang Fok , Washington University in St. Louis
Sangeeta Bhattacharya , Washington University in St. Louis
ABSTRACT
This paper presents MobiQuery, a spatiotemporal query service that allows mobile users to periodically gather information from their surrounding areas through a wireless sensor network. A key advantage of MobiQuery lies in its capability to meet stringent spatiotemporal performance constraints crucial to many applications. These constraints include query latency, data freshness and fidelity, and changing query areas due to user mobility. A novel just-in-time prefetching algorithm enables MobiQuery to maintain robust spatiotemporal guarantees even when nodes operate under extremely low duty cycles. Furthermore, it significantly reduces the storage cost and network contention caused by continuous queries from mobile users. We validate our approach through both theoretical analysis and simulation results under a range of realistic settings.
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CITATION
Chenyang Lu, Guoliang Xing, Octav Chipara, Chien-Liang Fok, Sangeeta Bhattacharya, "A Spatiotemporal Query Service for Mobile Users in Sensor Networks", ICDCS, 2005, Proceedings. 25th IEEE International Conference on Distributed Computing Systems Workshops, Proceedings. 25th IEEE International Conference on Distributed Computing Systems Workshops 2005, pp. 381-390, doi:10.1109/ICDCS.2005.7
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