Wireless sensor network (WSN) consists of a number of dedicated sensors which are spatially dispersed for different purposes such as monitoring and recording the various physical conditions of the environment and organising the data collected at a central location for further operations. In wireless sensor networks, the sensor nodes have limited energy which affects the lifetime of the nodes. Hence the system performance can be enhanced by minimising energy dissipation and maximising the lifetime of the nodes in the wireless sensor networks. Low Energy Adaptive Clustering Hierarchy(LEACH) protocol is a very important energy efficient protocol .This protocol improves the method of selection of cluster heads among the various sensor nodes by examining the residual energy of the different nodes and then the node which is having more residual energy is made the cluster head for that group of nodes .This protocol is highly efficient as it reduces energy consumption and decreases system delay which results in improvement of lifetime of the sensor nodes. So, we propose to improve the protocol to enhance the wireless sensor nodes performance through the energy optimisation.

WSN, LEACH

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