Wireless Sensor Networks (WSN) are an promising and very appealing technology applied to different applications. They are formed by small, self organized devices that collaborate to form a large range of network with thousands of nodes covering a large area. Wide practice of wireless sensor network (WSN) is the reason of development of many routing protocols. Routing as one input technologies of wireless sensor network has currently become a hot research because the applications of WSN is everywhere, it is impossible that there is a routing protocol suitable for all applications. In WSN, due to limited power of sensor nodes, one of the key challenge is to achieve minimum energy consumption in order to maximize network lifetime. In this paper, the routing protocol of WSN are classified and described. This paper things to see a number of the drawbacks and issues in LEACH and further discussed to resolve all these problems by its enhanced protocols.

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Wsn Hierarchical Routing Protocols Leach Energy Efficiency