Congestion Control of Active Queue Management Routers Based on LQ-Servo Control

This paper proposes the LQ-Servo controller for AQM (Active Queue Management) routers. The proposed controller structure is made by taking a traditional servo mechanism based on Linear Quadratic approach and by augmenting a new state variable to the feed forward loop. Since the controller structure is consists of a standard optimal feedback regulator and a feed forward controller, it is able to enhance the usefulness of resources and to reduce unnecessary memory reservations such as RAM (Random Access Memory) or SMA (Shared Memory Area) on ordinary router systems, respectively.

• Type: Journal
• Year: 2008
• Where: ENGL
• Authors: Kang Min Lee, Ji Hoon Yang, Byung Suhl Suh
• Keywords: Controller Structure, ENGL 2008, Feed Forward Controller, LQ-Servo Controller