Affiliations: Department of Information and Computer Engineering, Okayama University of Science, 1-1 Ridaicho, Kita-ku, 700-0005 Okayama, Japan. E-mail: [email protected]
Abstract: Delay Tolerant Networks enable data transmission in different applications, mainly in environments where communication infrastructure is missing. The existence of links is casual and even when links are created, they are short in time and unstable/unreliable in terms of connectivity. Thus, underwater network applications tend to be delay tolerant. In this paper, we propose a mobility-aware routing protocol for underwater wireless sensor networks. The protocol is based on Focused Beam Routing (FBR) protocol and considers nodes’ next destination location when making forwarding decisions. The routing protocol is called Destination-aware Focused Beam Routing (D-FBR) protocol and we compare its performance with FBR protocol for different FBR angles and different applications. We use Delivery Probability (DP), Average Number of Hops (ANH), Overhead Ratio (OR) and simulate our scenarios by The ONE simulator. Simulation results show that, for D-FBR protocol, when FBR angle is 30∘, OR and ANH is improved by 34.5% and 23.1%, respectively, while DP is 6.5% lower, compared to FBR protocol. Both D-FBR and FBR outperform Epidemic Routing Protocol.
