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A Survey on Energy Efficient Hierarchical (Leach) Clustering Algorithms in Wireless Sensor Network

M.Usha, Dr.N.Sankarram

In wireless sensor network, Sensor nodes are deployed randomly which are small in size with limited processing power, memory and battery life. Due to limited battery power, WSN has to extend the lifetime of network by minimizing the energy consumption. Clustering has the potential to reduce energy consumption so that the total energy consumed along the path for data transfer is minimized. They have high delivery ratio and scalability and can balance the energy consumption. In this paper, we have made a survey on various LEACHES (Low Energy Adaptive Clustering Hierarchy), Hierarchical energy efficient cluster based routing protocol which helps in booming the lifetime of wireless sensor network. We have also discussed the pros and cons of LEACH along with its descendants and a comparison is also made based on various metrics like mobility, reliability, scalability, location awareness, and Hop count.