Implementation experiments to evaluate a new TCP congestion control supporting loss-fairness

Kazumine Ogura, Zhou Su, Jiro Katto

研究成果: Conference contribution

抜粋

This paper proposes a new TCP congestion control supporting loss-fairness, which also contributes to improving RTT fairness. It has been well known that smaller RTT flows grab more bandwidth than larger ones when they compete on the shared link. This is called RTT unfairness and is caused by congestion control mechanism of the current TCP. To solve this problem, many protocols have been proposed. TCP-Libra is one of them, which formulates its window increase rate as a function of RTT and brings the same throughput irrespective of different RTT values. However, we indicate TCP-Libra's formulation holds only when the congestion window is halved upon packet losses similar to TCP-Reno. When we apply different (smarter) window control schemes, the formulation has to be modified accordingly. Therefore, in this paper, we consider a hybrid congestion control supporting RTT fairness which switches two modes according to buffering state at the bottleneck link. In decrement phase upon packet loss, it decreases window size to clear the buffering packets instead of halving the window size. Furthermore, we introduce the concept of loss-fairness for our window increase formulation, which is equivalent to RTTfairness. Experiments are carried out to validate the proposed method by both implementation experiments and simulations, and much better performances are achieved against conventional methods.

元の言語English
ホスト出版物のタイトル2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010
DOI
出版物ステータスPublished - 2010 12 20
イベント2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010 - Vancouver, BC, Canada
継続期間: 2010 6 82010 6 10

出版物シリーズ

名前2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010

Conference

Conference2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010
Canada
Vancouver, BC
期間10/6/810/6/10

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality

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  • これを引用

    Ogura, K., Su, Z., & Katto, J. (2010). Implementation experiments to evaluate a new TCP congestion control supporting loss-fairness. : 2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010 [5619919] (2010 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010). https://doi.org/10.1109/CQR.2010.5619919