Abstract
Energy optimization is one of the open issues in wireless sensor networks. Most of the work focuses on clustering techniques to reduce the energy consumption and enhancement of stability period. In this paper we have proposed a novel region based routing protocol for the rise in stability duration and lifetime improvement. The whole sensing area is divided among nine regions and dedicated to different variety of nodes. Dynamically changing cluster head election probability has been exploited for heterogeneous wireless sensor networks. In this paper, cluster head selection is based on residual energy of nodes, region in which the node is residing and minimum number of clusters per round. The proposed protocol is simulated using MATLAB and the results establish that it performs better than the ETSSEP in terms of stability period, throughput and lifetime. Proposed routing protocol frames more stable routing environment than the ETSSEP. It is also evident from the results that stability is increased by 35.03% in comparison to ETSSEP. Lifetime and throughput have also been improved by 23.16% (for 50% live node) and 25.58% respectively.
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