Understanding the Impact of Link Errors on TCP Congestion Control

T Edwan, L Guan, G Oikonomou, I Phillips

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


This paper presents a control-theoretic-like analysis of TCP congestion control mechanism. We extend previous analysis by considering two additional factors: i) wireless link errors and ii) general variable multiplicative decrease (MD). Wireless link errors are usually the cause for unnecessary TCP congestion window reductions and thus lower throughput. We also study the effects of those parameters on TCP's stability condition. In this paper, we present a modified TCP model and analyse it in the presence of delay. This is then linearised around an equilibrium point and re-analysed using a control-theoretic-like framework. The analysis verifies that non-congestive packet loss acts as a disturbance, as opposed to loss due to congestion, which is well within TCP's control.
Translated title of the contributionUnderstanding the Impact of Link Errors on TCP Congestion Control
Original languageEnglish
Title of host publicationProc. 26th UK Performance Engineering Workshop (UK PEW 2010)
Pages59 - 64
Publication statusPublished - Jun 2010

Bibliographical note

Name and Venue of Event: Coventry, UK
Conference Organiser: University of Warwick


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