New Based Leach Protocols for Efficient Energy Consumption in Wireless Sensor Networks

taous lechani


The limited energy of nodes in wireless sensor networks and the impossibility of replacing their batteries, lead to protocols development which optimize and balance the energy consumption over the network. LEACH is the most used hierarchical protocol. However, one major weakness of the LEACH protocol lies in both of its random cluster formation and its cluster head election.  Consequently, the number of clusters per round can be significantly different from the optimal cluster number. In this work, we present two variants of hierarchical protocols where the number of clusters and the repartition of the monitoring area are fixed in advance. In the first algorithm, the surface is partitioned into squares, while in the second algorithm the monitoring area is partitioned into regular hexagon shapes. In each polygon, one cluster head is elected according to its residual energy and its distance from the polygon center, at the same time. These approaches offer better balance of loads and show that the choice of these repartitions not only improves the network lifetime, but also minimizes its energy consumption.


Wireless sensor networks; LEACH protocol;Energy efficiency; Clustering; Network lifetime

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