An Energy Efficient Localization of the Sensory Nodes based on Secure Routing Protocol for Underwater Network

Sensor nodes along with the autonomous vehicles comprises of the underwater sensor network which is used to monitor the conditions. Offshore search and the monitoring underwater is the common phenomenon of UWSNs but due to some issues like signal attenuation i.e. the sudden disappearance of the line-of-sight (LOS) radio propagation signals create major challenges for the researchers to locate the deployed nodes underwater. To overcome this problem we propose an optimal energy efficient localization based secure routing (OEEL-SR) protocol for UWSNs. In localization process, the improved gravitational search optimization (IGSO) algorithm used to compute the location of nodes in UWSNs. In the routing process, the chaotic wolf optimization (CWO) algorithm used to compute the secure path on the basis of trust notation of nodes, which effectively delivers packet to sink nodes along with the improvement in both the transmission ratio and energy consumption of the data. The trust notation of each node in the network is compute by the five-metrics such as consumption of energy, end-to-end delay, mobility, received signal strength and number of candidates. The proposed OEEL-SR protocol is tested with the high density nodes in Network Simulator (NS2) tool. The results illustrate the effectiveness of OEEL-SR protocol of energy consumption, packet delivery ratio, positioning accuracy, end-to-end delay and number of candidates.