Abstract

Wireless Sensor Network (WSN) consists of a collection of battery-powered sensor nodes which send sensed data to base station. Wireless sensor nodes are working by using small batteries, which have limited energy and also may not easily rechargeable. Thus energy saving is necessary to increase the lifetime of wireless sensor networks. Various clustering techniques have been invented to increase energy of the sensor nodes in WSN. This paper presents a survey of different clustering techniques in wireless sensor network, which increase the lifetime of network.