A literature survey on various clustering approaches in wireless sensor network

Wireless sensor network (WSN) is a network which includes spatially distributed autonomous devices using sensors to monitor environmental or physical conditions. WSN is emerging as popular and essential ways of providing pervasive computing environments for numerous applications. The sensor nodes are constrained in terms of energy and therefore energy consumption and extending network lifetime is the most challenging task. A routing protocol in WSN is enhanced to hierarchical based routing protocol because of its energy-saving capability, network scalability and network topology stabilities. In this paper we have presented various clustering approaches used in WSN. Firstly, we have classified the protocol used in Wireless Sensor Network in the form of Protocol Operation (PO), Network Structure (NS) and Path Establishment (PE). Secondly, we have provided a broad overview of the cluster based routing protocol used in Wireless sensor network in the form of block cluster, chain cluster and grid cluster. We have also compared various clustering routing protocols based on different attributes and also discussed the various issues in these routing protocols.