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An Energy Efficient Routing Scheme for Cluster-based WSNs  

Song, Chang-Young (Dept. of Electronics, Kwangwoon University)
Kim, Seong-Ihl (Dept. of Electronics, Kwangwoon University)
Won, Young-Jin (Dept. of Electronics, Bucheon University)
Chung, Yong-Jin (Dept. of Information Electronics, Seoil University)
Publication Information
전자공학회논문지 IE / v.47, no.3, 2010 , pp. 41-46 More about this Journal
Abstract
WSN, or Wireless Sensor Network, consists of a multitude of inexpensive micro-sensors. Because the batteries in sensor nodes can not be replaced once they are deployed, the life of a WSN is absolutely determined by the batteries. So, energy efficiency of a network is a critical factor for long-life operation. LEACH protocol which divides WSN into two groups is a typical routing protocol based on the clustering scheme for the efficient use of limited energy. It is composed of round units which are separated into set-up and steady state. In this paper we propose a power saving scheme to minimize set-up phase itself and to involve a data comparison algorithm. We evaluate the performance of the proposed scheme in comparison with original LEACH protocol. Simulation results validate our scheme has better performance in terms of the number of alive nodes as time evolves and average energy dissipated.
Keywords
LEACH; WSN; Routing; Clustering; Sensor;
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