Robust active queue management for internet with multiple time delays

This paper focuses on modeling and compensation of multiple time delays in Internet congestion control, which has not been addressed in the literatures. A new mathematical model of the congestion control system for Internet with multiple state and input time delays is established, and a robust predictive congestion controller is presented. The controller is designed based on active queue management (AQM) and linear matrix inequality (LMI). The performance of the closed-loop system is analyzed via Lyapunov-Krasovskii approach and the effectiveness of the proposed controller is verified through simulation.