On the use of a full information feedback to stabilize RED

Jamali, S.; Hashemi, Seyyed Nasser Seyyed; Moghadam, Amir Masoud Eftekhari

doi:10.1016/j.jnca.2012.11.002

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…According to (29) at every sampling time k, the packet marking/dropping probability p.k/ is updated in terms of its previous values, p.k 1/, and the tracking error, ıq.…”

Section: Packet-level Implementationmentioning

confidence: 99%

“…Experimental assessments indicate that RED does not deal adequately with network heterogeneity and it may escalate further bandwidth under‐utilization by applying false congestion avoidance tactics . These drawbacks prompted further modifications and led to alternatives such as BLUE , Adaptive‐RED , FuzzyPID‐RED , CARED , FUF‐RED , and PDF‐HRED . In , the authors developed a framework to determine the optimal value of the weight parameter in a RED gateway to improve its performance.…”

Section: Introductionmentioning

confidence: 99%

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A compensated PID active queue management controller using an improved queue dynamic model

Kahe

Jahangir

Ebrahimi

2013

Int J Communication

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SUMMARYBeside the major objective of providing congestion control, achieving predictable queuing delay, maximizing link utilization, and robustness are the main objectives of an active queue management (AQM) controller. This paper proposes an improved queue dynamic model while incorporating the packet drop probability as well. By applying the improved model, a new compensated PID AQM controller is developed for Transmission Control Protocol/Internet Protocol (TCP/IP) networks. The non‐minimum phase characteristic caused by Padé approximation of the network delay restricts the direct application of control methods because of the unstable internal dynamics. In this paper, a parameter‐varying dynamic compensator, which operates on tracking error and internal dynamics, is proposed to not only capture the unstable internal dynamics but also reduce the effect of uncertainties by unresponsive flows. The proposed dynamic compensator is then used to design a PID AQM controller whose gains are obtained directly from the state‐space representation of the system with no further gain tuning requirements. The packet‐level simulations using network simulator (ns2) show the outperformance of the developed controller for both queuing delay stability and resource utilization. The improved underlying model leads also to the faster response of the controller. Copyright © 2013 John Wiley & Sons, Ltd.

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“…According to (29) at every sampling time k, the packet marking/dropping probability p.k/ is updated in terms of its previous values, p.k 1/, and the tracking error, ıq.…”

Section: Packet-level Implementationmentioning

confidence: 99%