CLUSTER BASED SLEEP SCHEDULING MECHANISM FOR WIRELESS SENSOR NETWORKS

摘要

Wireless Sensor Networks (WSN) are resource constrained. Energy consumption of whole network is balanced at individual nodes. Due to this nodes lifetime is extended. Absence of identifying the redundant nodes causes unnecessary energy consumption. To solve this, an energy efficient cluster method with cluster based redundancy discovery and sleep algorithm for energy efficient routing is proposed. In this work, Cluster heads are chosen based on residual energy, message representative path and distance. A cluster based algorithm is used for discovery of redundant nodes in the network. The algorithm works without any additional directional antennas. In each cluster, clustering sleep scheduling mechanism is initiated when data transfer rate is less than the threshold value. If the data transfer rate do not cross the threshold value, then all nodes in the cluster will go to sleep mode. The proposed method balances the energy at individual nodes and extends the network lifetime.