Research on wireless sensor networks has recently received much attention as they offer an advantage of monitoring various kinds of environment by sensing physical phenomenon. Prolonged network lifetime, scalability, and load balancing are important requirement for many sensor network applications. Clustering sensor nodes is an effective technique for achieving these goals. In this paper, we evaluate and compare state-of-the-art clustering protocols, i.e., LEACH,LEACH C and HEED. Finally, these clustering approaches were compared based on a few metrics such as convergence rate, cluster stability, cluster overlapping, location-awareness and support for node mobility. Finally, we summarize and conclude the paper with some future directions

Cluster Head Selection, HEED and LEACH Protocol ,Wireless Sensor Networks (WSN)

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