This paper is concerned with the control of network data transfer so as to avoid internet traffic congestion. Specifically, a new Active Queue Management (AQM) algorithm supporting the Transmission Control Protocol (TCP) is suggested. To this purpose, the TCP dynamics is described by means of a second--order model with delayed input obtained from the linearization of an efficient nonlinear fluid--based model. By applying the Artstein transformation, the input--delayed model is first reduced to a delay--free model. Then, a feedback AQM controller is designed for this model using a Sliding Mode Control (SMC) strategy. Simulation results show the effectiveness of the proposed AQM technique.
Robust TCP packets queue control
BLANCHINI, Franco;MIANI, Stefano;VIARO, Umberto
2009-01-01
Abstract
This paper is concerned with the control of network data transfer so as to avoid internet traffic congestion. Specifically, a new Active Queue Management (AQM) algorithm supporting the Transmission Control Protocol (TCP) is suggested. To this purpose, the TCP dynamics is described by means of a second--order model with delayed input obtained from the linearization of an efficient nonlinear fluid--based model. By applying the Artstein transformation, the input--delayed model is first reduced to a delay--free model. Then, a feedback AQM controller is designed for this model using a Sliding Mode Control (SMC) strategy. Simulation results show the effectiveness of the proposed AQM technique.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
