Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/3285

Low-overhead dominating set based algorithms for maximizing lifetime in wireless sensor networks

Authors Ma, Jian
Ni, Lionel M.
Issue Date 2007
Source 2007 IEEE INTERNATIONAL CONFERENCE ON MOBILE AD-HOC AND SENSOR SYSTEMS, VOLS 1-3 , 2007, p. 102-110
Summary In wireless sensor networks, connected dominating set (CDS) has become a key technique to identify redundant nodes and extend network lifetime. Most CDS-based algorithms focus on building the minimal CDS to find as many redundant nodes as possible. However, role rotation is not considered so that the dominating nodes will run out of energy much faster than the non-dominating nodes. Existing CDS-based algorithms for maximizing network lifetime rely on the up-to-date remaining energy level (REL) information within h-hop neighborhood to rotate node roles iteratively. Furthermore, global time synchronization is required to synchronize every round. The overhead on REL updating and time synchronization can lead to energy waste and packet collision. In this paper, we first propose a randomized rotation algorithm, which can totally avoid REL updating. Then, dominating node history is added as an enhancement to further extend network lifetime. Finally, we propose a broadcast-based synchronization mechanism to reduce the synchronization overhead and assist dominating node selection. Extensive simulations show that our proposed algorithm can significantly reduce overhead without sacrificing network lifetime.
Subjects
ISBN 978-1-4244-1454-3
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Language English
Format Conference paper
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