Status packet deprecation and store-forward routing in AUSNet

Authors:
Matt Haag;Emmanuel Agu;Rick Komerska;Steven G. Chappell;Radim Bartovš
Affiliations:
Worcester Polytechnic Institute, Worcester, MA;Worcester Polytechnic Institute, Worcester, MA;Autonomous Undersea Systems Institute, Lee, NH;Autonomous Undersea Systems Institute, Lee, NH;University of New Hampshire, Durham, NH
Venue:
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
Year:
2006

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Abstract

AUSNet is a functional network of autonomous undersea vehicles. We present two novel algorithms to enhance AUSNet. In live in-water testing, a packet queueing problem in which stale status packets accummulated while AUVs were out of transmission range, was discovered. A replace-and-hold algorithm was designed to replace stale status packets. A store-and-forward feature using data shuttles between disjoint network partitions, is also proposed. Both algorithms were evaluated in a time-driven simulator. The replace-and-hold method showed bandwidth usage improvements of 48% for a typical AUV scenario and improved performance even when nodes remained connected. Multiple store-and-forward models were compared and showed varying levels of improvement.