—As the per-flow product of bandwidth and latency increases, TCP/RED becomes inefficient and prone to instability. To address this problem we are going to design a novel active queue management (AQM) that supports TCP to achieve high performance in such networks. This paper proposes a novel algorithm, in which, particle swarm optimization (PSO) technique is used to dynamic tuning of RED’s parameters. This algorithm formulates the active queue management issue as an optimization problem and employs PSO technique to direct it to its optimum point. Dynamic tuning of parameters helps the proposed algorithm to be adapted to special situations such as high bandwidth and large delays. Simulation results show that the proposed algorithm behaves remarkably better than RED in terms of queue size, number of dropped packets, and bottleneck utilization for these networks.
—AQM, RED, high bandwidth delay product.
Shahram Jamali is with the Electrical and Computer Engineering Department University of Mohaghegh Ardabili, Ardabil, Iran (e-mail: Jamali@iust.ac.ir).
Seyed Reza Zahedi is with the Computer Engineering Department, Islamic Azad University-Khalkhal Branch Khalkhal, Iran (e-mail: Seyed.firstname.lastname@example.org).
Cite:Shahram Jamali and Seyed Reza Zahedi, "An Active Queue Management for High Bandwidth-Delay Product Networks," International Journal of Computer Theory and Engineering vol. 5, no. 5, pp. 763-767, 2013.