Wireless Sensor Network (WSN) is a collection of sensor nodes connected to base station which is characterized by many to one communication. Many sensor nodes will send data to base station making it many to on communication. The sensor nodes can act as sender and receiver of data as the data is sent to base station through intermediary nodes. The nodes are resource constrained as they are deployed in hostile environment or environment where resources are limited. The nodes are expected to participate in sensing or surveillance.