Improved HydroCast: A Technique for Reliable Pressure Based Routing for Underwater WSNs

In this paper, performance of hydraulic pressure based routing protocol (HydroCast) is examined, and (Improved HydroCast) a technique for reliable HydroCast is proposed. Pressure level of sensor nodes is used to route data packet in greedy multi hop fashion to sinks deployed on the surface of water. The goal of this paper is to define reliable routing technique, that is applicable for both low and high density under water wireless sensor networks. In this paper, varying number of mobile sensor nodes are randomly deployed along with some fixed nodes at different strategic locations in the network. These few fixed nodes play important role in minimizing average number of transmissions for data packet delivery, and maximizing packet delivery ratio in sparse network. Simulation results validate that the proposed technique.