Wireless Rechargable Sensor Networks

A wireless sensor network (WSN) is formed by grouping a number of sensor nodes together to play its role like sensing monitoring gathering and forwarding the data. The application of a sensor includes vast areas like Home security machine failure diagnosis and biological detection military agriculture etc. Researchers are doing a lot of researchers in various areas of sensor networks like routing energy efficiency and data aggregation etc. Routing plays an important role in WSN. A number of routing protocols are emerging day to day. The energy efficiency is the main constraints. LEACH (Low-Energy Adaptive Clustering Hierarchy) is one of the routing protocols proposed to routing. This paper presents a review of the Variants of LEACH protocols proposed to wireless sensor networks. Finally we provide a comparative study on these various protocols.