Advance wireless sensor network (WSN) technology is Low- power electronics and Low-power radio frequency design has enabled the development of small, relatively inexpensive & low-power sensor technology. The important challenges in design of network are two key resource1) Energy 2) Communication bandwidth. LEACH (Low Energy Adaptive Clustering Hierarchical) protocol are used to design energy efficient system depending upon energy levels of cluster head and cluster-members . So appropriate energy protocol to get balance between lifetime of sensor nodes and latency become key solution. This paper basically a review on LEACH protocol for Wireless Sensor Nodes in Network Simulator (NS2) to reduce average latency and increases life of sensor nodes.

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Leach Protocol Wireless Sensor Network Energy Efficient