Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/3254

Opportunity-based topology control in wireless sensor networks

Authors Liu, Y.
Zhang, Q.
Ni, L.
Issue Date 2008
Source Proceedings - The 28th International Conference on Distributed Computing Systems, ICDCS 2008, 2008, p. 419-426
Summary Topology control is an effective method to improve the energy efficiency of wireless sensor networks (WSNs). Traditional approaches are based on the assumption that a pair of nodes is either "connected" or "disconnected". These approaches are called connectivity-based topology control. In real environments however, there are many intermittently connected wireless links called lossy links. Taking a succeeded lossy link as an advantage, we are able to construct more energy-efficient topologies. Towards this end, we propose a novel opportunity-based topology control. We show that opportunity-based topology control is a problem of NP-hard. To address this problem in a practical way, we design a fully distributed algorithm called CONREAP based on reliability theory. We prove that CONREAP has a guaranteed performance. The worst running time is O(\E\) where E is the link set of the original topology, and the space requirement for individual nodes is O(d) where d is the node degree. To evaluate the performance of CONREAP, we design and implement a prototype system consisting of 50 Berkeley Mica2 motes. We also conducted comprehensive simulations. Experimental results show that compared with the connectivity-based topology control algorithms, CONREAP can improve the energy efficiency of a network up to 6 times. © 2008 IEEE.
Subjects
ISSN 1063-6927
ISBN 978-1-4244-3174-8
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Language English
Format Conference paper
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