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Inter-protocol fairness between TCP New Reno and TCP Westwood
KTH, School of Electrical Engineering (EES), Automatic Control.
2007 (English)In: 2007 Next Generation Internet Networks, 2007, 127-134 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we investigate the effect of introducing TCP Westwood+ on regular TCP New Reno. By means of analytical modeling and ns-2 simulations, we demonstrate that the two protocols get different shares of the available bandwidth in the network. Our main result is that the bandwidth sharing between the two protocols depends on one crucial parameter: the ratio between the bottleneck router buffer size and the bandwidth delay product. If the ratio is smaller than one, TCP Westwood+ takes more bandwidth. On the contrary, if the ratio is greater than one, it is TCP New Reno which gets the larger part. Inspired by our results, we propose a simple modification to the window decrease algorithm in TCP Westwood+ that solves the unfairness problem for large buffer sizes. For small buffers, the unfairness problem is still open.

Place, publisher, year, edition, pages
2007. 127-134 p.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-40774DOI: 10.1109/NGI.2007.371207ISI: 000248047300018Scopus ID: 2-s2.0-34548838841ISBN: 978-1-4244-0856-6 (print)OAI: oai:DiVA.org:kth-40774DiVA: diva2:442646
Conference
3rd EuroNGI Conference on Next Generation Internet Networks - Design and Engineering for Heterogeity Location: Trondheim, Norway, Date: MAY 21-23, 2007
Available from: 2011-09-22 Created: 2011-09-20 Last updated: 2011-09-22Bibliographically approved

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Citation style
  • apa
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  • nn-NB
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  • Other locale
More languages
Output format
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  • asciidoc
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