Abstract
Underwater Acoustic Sensor Networks (UASNs) are one of the emerging areas in the field of communication. There are several challenges in UASNs like energy-constrained nodes, low bandwidth, high propagation delay, high packet error rate, and communication void-node during routing. These challenges enormously causing problems to the delay-sensitive underwater applications. The major contribution of this paper is to design a routing protocol, which is referred to as the Link and Void Aware Routing (LVAR) protocol. LVAR protocol addresses the void-node problem by proactively avoiding such nodes during routing. Further, during routing sender selects the next-hop based on successful packet delivery probability. LVAR is implemented using a specialized underwater simulator-UnetStack. The performance of the LVAR protocol is compared with state-of-art Interference-Aware Routing(Intar) in terms of end-to-end delay and throughput.
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