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Mathematical Problems in Engineering
Volume 2014, Article ID 834698, 7 pages
Research Article

Design of the Congestion Control for TCP/AQM Network with Time-Delay

Shanghai University of Engineering Science, Shanghai 201620, China

Received 8 July 2014; Accepted 20 August 2014; Published 25 September 2014

Academic Editor: Housheng Su

Copyright © 2014 Dazhong Wang and Shujing Wu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this paper is to design congestion controller for TCP/AQM (transmission control protocol/active queue management) networks using model following control; the equilibrium of a class of TCP/AQM networks with time-delay is investigated, and the effect of communication time-delay on the stability is addressed. The features of this design method are bounded property of the internal states of the control system being given and the utility of this control. Such design exhibits important attributes including fast convergence with high accuracy to a desired queue length. Simulation results show that the time-delay nonlinear behavior of the system can be controlled by this method.