Void Avoidable Opportunistic Routing For Under Water Acoustic Sensor Network

Abstract

Recently, underwater acoustic sensor networks (UASNs) have been proposed to explore
underwater environments for scientific, commercial and military purposes. But high
transmission losses, packet drops, propagation delays, limited bandwidth allocation these
restricted metric in underwater propagation environments build realization of r energyefficient communication a hassle some task for UASNs. The extremely dynamic nature of
UWA links demand adaptation, scalable and efficient routing schemes for UASNs. Depthbased routing has attracted a lot of attention as a result of it will work expeditiously while
not the necessity for full-dimensional location info of sensors. However, it suffers from the
issues of void region and detouring forwardingThis project proposes a distance vector based
opportunistic routing (DVOR) scheme to address these problems. DVOR uses a query
mechanism to determine the gap vectors for underwater acoustic nodes which record the
littlest hop counts towards the sink. Then, an opportunistic routing is developed to coordinate
the packet forwarding based on the distance vectors. DVOR has a low signaling overhead in
opportunistic forwarding, as well as the ability to avoid the problems of void region and long
detour. Simulation results show that DVOR outperforms the existing routing protocols in
terms of packet delivery ratio, energy-efficiency and average end-to-end delay.