IJSRP, Volume 5, Issue 3, March 2015 Edition [ISSN 2250-3153]
R. Swathi, S. Kirubakaran, C. Kamalanathan
A Wireless Sensor Network (WSN) is built from a network of devices referred to as nodes, which can sense the environment and are used to communicate the required information collected from monitored fields. The communication and collection of information is done with the help of wireless links, where each node is linked to one or a number of sensors. The nodes in turn are deployed in large numbers depending upon the application where it is used. In modern days the process is bidirectional where the sensor activity can be monitored. The longevity in network lifetime is necessary as they have limited battery power which is to be used efficiently. This has led to new horizons upon energy saving and reduced power consumption among sensor nodes. Hierarchical cluster-based routing protocols are considered as one of the most efficient routing protocols in wireless sensor networks (WSN) due to its higher energy efficiency, network scalability, and lower data retransmission. An energy efficient hierarchical routing protocol LEACH-EN based on LEACH-C is designed by introducing the concept of dynamic node scenario in LEACH-C where movement of nodes is introduced along with compression of data from each node using LZW compression technique. The energy of nodes by introducing dynamic node concept along with compression seems to be efficient than the energy of nodes in LEACH-C protocol and therefore network longevity can be maintained to a certain extent.