K.M. Lee, J.H. Yang, and B.S. Suh (Korea)
TCP/AQM, Congestion control, LQ-Servo, Loop-Shaping,Frequency domain
This paper proposes the LQ-Servo control for TCP/AQM router. The proposed controller structure is made by both taking a traditional servo mechanism based on Linear Quadratic approach and augmenting a new state variable to the feed forward loop. And, in order to meet such frequency domain design specifications as good disturbance rejection, command following and noise attenuation, the limiting loop shaping method is developed by shifting all zeros to a larger pole of TCP/AQM model to determine the design parameters
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