A simple mechanism for stabilizing network queues in TCP/IP networks

James Aweya; Michel Ouellette; Delfin Y. Montuno

doi:10.1002/nem.625

A simple mechanism for stabilizing network queues in TCP/IP networks

James Aweya, Michel Ouellette, Delfin Y. Montuno

Emirates ICT Innovation Center

Nortel Networks

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this paper we determine the stability bounds for the DRED active queue management (AQM) algorithm using a previously developed nonlinear dynamic model of TCP. We develop a second-order linear model with time delay by linearizing the nonlinear model. Using the Pade approximation of time-delayed system e ^-R0s, where R₀ is the delay in the system, we then determine the range of stabilizing gains of DRED when controlling the second-order system with time delay R₀. We also present examples showing the stability bounds of the DRED controller gain for networks with different parameters such as link capacity, load level, and round-trip time. In addition, we describe an efficient implementation of the DRED AQM algorithm.

Original language	British English
Pages (from-to)	275-286
Number of pages	12
Journal	International Journal of Network Management
Volume	17
Issue number	4
DOIs	https://doi.org/10.1002/nem.625
State	Published - Jul 2007

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10.1002/nem.625

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abstract = "In this paper we determine the stability bounds for the DRED active queue management (AQM) algorithm using a previously developed nonlinear dynamic model of TCP. We develop a second-order linear model with time delay by linearizing the nonlinear model. Using the Pade approximation of time-delayed system e -R0s, where R0 is the delay in the system, we then determine the range of stabilizing gains of DRED when controlling the second-order system with time delay R0. We also present examples showing the stability bounds of the DRED controller gain for networks with different parameters such as link capacity, load level, and round-trip time. In addition, we describe an efficient implementation of the DRED AQM algorithm.",

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A simple mechanism for stabilizing network queues in TCP/IP networks

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