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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 12    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 12, December 2011
REEH: Residual Energy Efficient Heterogeneous Clustered Hierarchy Protocol For Wireless Sensor Networks
Full Text(PDF, 3000)  PP.  
Lalitesh K.Sehgal, Vishal Chowdhary
Clustering, Energy efficiency, heterogeneous, homogeneous, LEACH protocol, network lifetime, Residual energy, wireless sensor networks.
Wireless sensor networks (WSN) are spatially distributed micro sensor systems. WSN is a power constrained system, since nodes run on limited power batteries which shorten the life time of the system. Prolonging the life time depends on efficient communication protocol architecture. LEACH hierarchical homogeneous communication protocol which greatly minimizes the energy consumed in collecting and disseminating data. In this paper, impact of heterogeneity in energy of nodes to prolong the life time of WSN is described. A protocol is proposed, which is heterogeneous in energy than the LEACH protocol, further more residual energy of the network is used in which cluster head(CH) is selected based on the residual energy of the node and the cluster. This research work present a metrics approach, FND (first node dies), HNA (Half of the nodes alive) and LND (last node dies), to define lifetime of WSN. Simulation results using NS-2.27 shows that the proposed Leach- heterogeneous and residual energy based Leach protocol significantly reduces energy consumption and increase the total lifetime of the wireless sensor network compared to the homogeneous LEACH protocol.
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