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Energy Efficient Routing Protocol for Wireless Sensor Networks

Author(s): H.Srikanth.Kamath

Journal: International Journal of Advanced Computer Research
ISSN 2249-7277

Volume: 3;
Issue: 10;
Start page: 95;
Date: 2013;
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Keywords: W ireless sensor networks | LEACH protocol | LEACH - R | lifetime | cluster head

WirelessSensors are subjected to harsh deploymentconditions and have constrained resources.Inthispaper, we analyse the effectiveness of LEACHprotocol in extending the lifetime for energy-constrained wireless sensor networks.Based onLEACH protocol, an improved protocol termed asLEACH-Ris proposed. LEACH-Rimproves theselection ofcluster-head by considering the residualenergy of the nodesduring selection of cluster-head,thereby reducing thepossibility of low-energy nodesbeing selected. Based on both residual energy anddistance to base station, relaying node is chosenfrom clusterheads to become the relay node betweenbase station and other cluster-heads. The simulationresults suggestLEACH-R protocol could balancenetwork energy consumption and extend the networklife cycle more effectively as compared to LEACH.
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