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An accurate link model and its application to stability analysis of FAST TCP
KTH, School of Electrical Engineering (EES), Automatic Control.
2007 (English)In: INFOCOM 2007, IEEE , 2007, 161-169 p.Conference paper (Refereed)
Abstract [en]

This paper presents a link model which captures the queue dynamics when congestion windows of TCP sources change. By considering both the self-clocking and the link integrator effects, the model is a generalization of existing models and is shown to be more accurate by both open loop and closed loop packet level simulations. It reduces to the known static link model when flows' round trip delays are similar, and approximates the standard integrator link model when the heterogeneity of round trip delays is significant. We then apply this model to the stability analysis of FAST TCP. It is shown that FAST TCP flows over a single link are always linearly stable regardless of delay distribution. This result resolves the notable discrepancy between empirical observations and previous theoretical predictions. The analysis highlights the critical role of self-clocking in TCP stability and the scalability of FAST TCP with respect to delay. The proof technique is new and less conservative than the existing ones.

Place, publisher, year, edition, pages
IEEE , 2007. 161-169 p.
, Proceedings - IEEE INFOCOM, ISSN 0743-166X
Keyword [en]
Congestion control (communication), Mathematical models, Network protocols, Packet switching, Time delay
National Category
Telecommunications Remote Sensing
URN: urn:nbn:se:kth:diva-155581DOI: 10.1109/INFCOM.2007.27ISI: 000249117700019ScopusID: 2-s2.0-34548335301ISBN: 1424410479ISBN: 978-142441047-7OAI: diva2:762116
IEEE INFOCOM 2007: 26th IEEE International Conference on Computer Communications, 6 May 2007 through 12 May 2007, Anchorage, AK, United States

QC 20141110

Available from: 2014-11-10 Created: 2014-11-07 Last updated: 2014-11-10Bibliographically approved

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