Watch Dog Timer Node (WDTN) based Sensor Node-Master Operations in Wireless Sensor Networks (WSN)

Now a days, it is essential, to improve the security including energy efficiency in various emerging application under WSN. To keep this in mind, a WDT node based sensor node master operations in wireless sensor network method is proposed. In this approach, network consists of random node deployment of sensor nodes and it is partitioned into levels. WDT is a watch dog timer based node acts as a station keeping node. In each level there is main selection and redundant selection of WDT node is considered. At a time one node is taken to monitor the other nodes in the level. By this all node health status is keep intact in different levels by the help of status word. Master operations includes, node information through status word, routing tree discovery for path used for data communication, efficient encryption technique in the path from source to sink via Key Distribution Centre(KDC). All this operations is carried out by WDT node and sensor nodes used in the path. The proposed approach also tells, how effectively energy level is maintained in the network. By implementing the WDT algorithm, routing tree and secured key based encryption methods the overall throughput, packet delivery ratio (PDR), End-to-End delay and energy may effectively manage.