Extended Lifetime Based Elliptical Sink-Mobility in Depth Based Routing Protocol for UWSNs

Unique characteristics of Underwater Sensor Networks (UWSNs) are very challenging in design of an efficient data gathering routing protocol. These characteristics include large propagation delay, high error rate, low bandwidth, and limited energy. In UWSNs, improved network lifetime, increased throughput and low end-to-end delay are prominent issues which are constantly attracting the research community. In this paper, we propose an energy efficient routing protocol, named Sink-Mobility in Depth Based Routing Protocol (SMDBR) for UWSNs. SMDBR utilizes the Mobile Sink (MS) to enhances network lifetime gather the data efficiently. It also utilizes the depth of sensor nodes for forwarding the data packets. The path followed by MS is elliptical, and it is moving with constant speed. Based on simulation, we perceive that SMDBR contributes to the performance improvement in terms of network lifetime, energy consumption, stability period and end-to-end delay of network.