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Improving Lifetime and Coverage through Mobile Beacon for High Density Sensor Networks

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3 Author(s)
Bahi, J.M. ; Comput. Sci. Lab., Univ. of Franche-Comte, Besancon ; Makhoul, A. ; Mostefaoui, A.

The expected lifetime of any wireless sensor network is a critical issue as sensor nodes are powered by small batteries. One effective approach for energy conservation, especially in high density networks, consists on switching alternatively nodes in sleep/active modes, while ensuring at the same time continuous monitoring (i.e., coverage and connectivity). In this paper we propose a novel approach to achieve energy savings by organizing the sensor nodes into disjoint sets (rounds) which are activated successively. The key idea behind our approach is to exploit a mobile beacon, primarily used to localization purposes, to additionally constructs sets of actives nodes. The simulation results we obtained validated the effectiveness of our approach in comparison to existing ones.

Published in:

Sensor Technologies and Applications, 2008. SENSORCOMM '08. Second International Conference on

Date of Conference:

25-31 Aug. 2008