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Supporting aggregate queries over ad-hoc wireless sensor networks

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4 Author(s)
S. Madden ; California Univ., Berkeley, CA, USA ; R. Szewczyk ; M. J. Franklin ; D. Culler

We show how the database community's notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the sensor network literature, aggregation is important as a data reduction tool; networking approaches, however, have focused on application specific solutions, whereas our in-network aggregation approach is driven by a general purpose, SQL-style interface that can execute queries over any type of sensor data while providing opportunities for significant optimization. We present a variety of techniques to improve the reliability and performance of our solution. We also show how grouped aggregates can be efficiently computed and offer a comparison to related systems and database projects.

Published in:

Mobile Computing Systems and Applications, 2002. Proceedings Fourth IEEE Workshop on

Date of Conference: