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A third drop level for TCP-RED congestion control strategy
Journal article   Open access   Peer reviewed

A third drop level for TCP-RED congestion control strategy

N. Hamadneh, M. Dixon, P. Cole and D. Murray
Proceedings of World Academy of Science, Engineering and Technology, Vol.81(57), pp.892-898
2011
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Abstract

This work presents the Risk Threshold RED (RTRED) congestion control strategy for TCP networks. In addition to the maximum and minimum thresholds in existing RED-based strategies, we add a third dropping level. This new dropping level is the risk threshold which works with the actual and average queue sizes to detect the immediate congestion in gateways. Congestion reaction by RTRED is on time. The reaction to congestion is neither too early, to avoid unfair packet losses, nor too late to avoid packet dropping from time-outs. We compared our novel strategy with RED and ARED strategies for TCP congestion handling using a NS-2 simulation script. We found that the RTRED strategy outperformed RED and ARED.

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