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Base-station controlled clustering scheme in wireless sensor networks

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6 Author(s)
Manjula, S.H. ; Dept. of Comput. Sci. & Eng., Bangalore Univ., Bangalore ; Reddy, E.B. ; Shaila, K. ; Nalini, L.
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Wireless Sensor Networks (WSNs) are highly distributed networks of small, light weighted, wireless nodes deployed in large numbers. These sensor nodes are immobile, non rechargeable with limited energy. The cluster-based protocols make judicious use of this limited energy. LEACH-C (Low Energy Adaptive Clustering Hierarchy-Centralized) has a drawback, a lot of energy is consumed by the nodes to send status messages to the base station every round for cluster head selection, LEACH-CE (LEACH Cluster Estimate) protocol overcome this problem. We use this property of LEACH-CE, and improve over it. We propose LEACH-CCB (LEACH- Completely Controlled by Base-station) which presents two techniques through which energy of the nodes is conserved. First, by avoiding frequent communications of the nodes with the base station. Second, by making certain percent of nodes sleep every round. From simulation, we obtain a greater network lifetime than in LEACH-CE.

Published in:

Wireless Days, 2008. WD '08. 1st IFIP

Date of Conference:

24-27 Nov. 2008