Energy-Efficient Composite Event Detection in Wireless Sensor Networks

Authors:
Mirela Marta;Yinying Yang;Mihaela Cardei
Affiliations:
Department of Computer Science and Engineering, Florida Atlantic University, Boca Raton, U.S.A. 33431;Department of Computer Science and Engineering, Florida Atlantic University, Boca Raton, U.S.A. 33431;Department of Computer Science and Engineering, Florida Atlantic University, Boca Raton, U.S.A. 33431
Venue:
WASA '09 Proceedings of the 4th International Conference on Wireless Algorithms, Systems, and Applications
Year:
2009

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Abstract

Wireless sensor networks are deployed to monitor and control the physical environment. Sensors can be equipped with one or more sensing components, such as temperature, light, humidity, etc. An atomic event can be detected using one sensing component. A composite event is the combination of several atomic events. We consider a wireless sensor network densely deployed in a monitored area for reliable detection of a predefined composite event. In this paper, we study the energy-efficient k -watching composite event detection problem, concerned with designing a sensor scheduling mechanism that increases network lifetime, when the set of active sensor nodes are connected and collectively k -watch the composite event at all times. We propose a localized connected dominating set based approach and analyze its performance by simulations.