Message Prioritization for Routing in a DTN Environment
Abstract
Networks have become an integral part of life today. However, connectivity problems arise in rural areas or battlefields where wired networks do not exist and wireless networks have limited coverage. In this regime, research into delay/disruption tolerant networking (DTN) techniques can help maintain opportunistic connectivity with eventual delivery of information. However, current generations of DTN routing techniques have several weaknesses of their own; particularly when the network is under high demand, both message losses and message delays rise quickly. This thesis investigates the potential of a message priority system to maintain delivery rate delays in proportion to message priority. Currently, the priority field exists in the standardized DTN metadata bundle header, but no implementation exists to use message priority as a forwarding criterion. In this thesis, using an eight node PC-based test-bed, we examine performance using existing DTN forwarding strategies, and then implement two new forwarding strategies of our own. Using these two new strategies we repeat the baseline testing using simulated data and disruptions, and observe the results. Our research aims to provide service estimations in terms of delivery rates and comparative delivery times for all levels of priority through all regimes of network demand.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2011
- Accession Number
- ADA543126
Entities
People
- Christopher A. Rapin
Organizations
- Naval Postgraduate School