Abstract:The study was made to research into the effect of the network delay upon the AQM mechanism and to analyze the properties of several typical AQM algorithms in delay networks, which was put forward recently. With a discussion of the advantage and disadvantage of the DC-AQM, this paper, according to the Ziegler-Nichols approach, in which PID controller may compensate for the time delay, proposed an AQM algorithm using Ziegler-Nichols Method that can reduce the negative impact caused by the large delay. Finally, the performance of AQM with Ziegler-Nichols Delay Compensation is evaluated through NS simulations. Results from the simulation reached the objective expected.