UTILIZATION-BASED CONGESTION CONTROL

Traditional connection oriented protocols like TCP NewReno perform poorly over wireless links. The problem lies in their design assumptions based on loss based congestion control. Various modifications to loss based congestion control schemes have so far been proposed to overcome the issue. In addit...

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Bibliographic Details
Published inInternational journal of computer networks & communications Vol. 4; no. 5; p. 101
Main Authors Utsumi, Satoshi, Zabir, Salahuddin Muhammad Salim
Format Journal Article
LanguageEnglish
Published 30.09.2012
Subjects
Computer simulation
Congestion
Delay
Joints
Links
Mathematical models
Names
TCP (protocol)
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Summary:Traditional connection oriented protocols like TCP NewReno perform poorly over wireless links. The problem lies in their design assumptions based on loss based congestion control. Various modifications to loss based congestion control schemes have so far been proposed to overcome the issue. In addition, the comparatively newer family of delay based congestion control mechanisms like Caia-Hamilton Delay, offer effective solutions for wireless link loss. In this paper, the authors propose a new end-to-end congestion control mechanism that we name as Utilization-based Congestion Control (UCC) in order to overcome the above problems. UCC provides a solution based on the utilization at the bottleneck link. It is free from critical parameters like queuing threshold and is friendly to other flows over wireless links when deployed together. Simulation results show that over wireless links, (i) UCC can yield a performance improvement of 150% or more compared to conventional loss-based schemes and (ii) it is friendly to conventional loss-based congestion controls.
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ISSN:0975-2293
0974-9322
DOI:10.5121/ijcnc.2012.4507