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Delay Tolerant Network

Ahmed Osama. Delay Tolerant Network. Delay Tolerant Network. What is Delay Tolerant Network?. No continuous route exist between the source and destination. D. S. Delay Tolerant Network. What is Delay Tolerant Network?. Use opportunistic routing to deliver packets (Mobility case). I. D.

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Delay Tolerant Network

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  1. Ahmed Osama Delay Tolerant Network

  2. Delay Tolerant Network What is Delay Tolerant Network? No continuous route exist between the source and destination D S DTN- WINC- Nile University

  3. Delay Tolerant Network What is Delay Tolerant Network? Use opportunistic routing to deliver packets (Mobility case) I D S DTN- WINC- Nile University

  4. Delay Tolerant Network What is Delay Tolerant Network? Use opportunistic routing to deliver packets (Scheduled wake up) I I D S I DTN- WINC- Nile University

  5. Delay Tolerant Network What is meant by extreme environment? • Deep Space Communications • Beyond near-earth • Landers, Orbiters, Deep Space Probes • Sensor Networks • Terrestrial: Ocean or Land Based • Extra-terrestrial objects (on planets, etc) • High-Stress Physical Environments • Battlefield, Civil Emergency, Submarines DTN- WINC- Nile University

  6. Delay Tolerant Network Challenges that concern us Reliability Security Evolving files and caching DTN- WINC- Nile University

  7. Reliability Network Coding in delay tolerant network In delay tolerant network; realistic network environment suffers from limited bandwidth and node buffers. In such environment, we need to deliver packets with minimal delivery delay under no precise knowledge, with taking into account limited buffer length DTN- WINC- Nile University

  8. Evolving files and caching In a cooperative environment and non cooperative • The need to send an updated version of file to N nodes to be stored; these nodes are mobiles • So we need to examine different ways in distributing files which change dynamically. “In Delay tolerant Network” • Generic Examples • File change from time to time(weather forecasting) • Backup files • Software update patches DTN- WINC- Nile University

  9. Security I am very concerned with Traffic analysis Because traffic analysis is dangerous, why? Naïve solution (L2L encryption) will introduce a huge overhead in addition to its failure if an intermediate nodes were compromised. DTN- WINC- Nile University

  10. Summary To sum up Delay tolerant network coding is a network where no continuous path exist between source and destination Delay tolerant network coding is used in extreme networks DTN- WINC- Nile University

  11. References Web Resources en.wikipedia.org/wiki/Delay-tolerant_networking www.dtnrg.org/ www.ipnsig.org/ Papers E. Altman, P. Nain, and J. Bermond. Distributed storage management of evolving files in delay tolerant ad hoc networks. In Proc. of IEEE INFOCOM, 2009. Y. Fan, Y. Jiang, H. Zhu, and X. Shen, "An Efficient Privacy-Preserving Scheme against Traffic Analysis Attacks in Network Coding", Proc. IEEE INFOCOM'09, Rio de Janeiro, Brazil, April 19-25, 2009. Y. Lin, B. Liang, and B. Li, “Performance Modeling of Network Coding in Epidemic Routing,” in Proc. of the First ACM International Workshop on Mobile Opportunistic Networking (MobiOpp), 2007. DTN- WINC- Nile University

  12. Thank you for listening Any Questions?

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