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| A New AQM Scheme for Fast Response |
| Zhang Tian-kui; Guo Cai-li; Zeng Zhi-min; Feng Chun-yan |
| Institute of Communication Networks Integrated Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract Based on control theory, a Proportional-Integral (PI) controller is designed which has a character of fast response. Consequently, a new Active Queue Management (AQM) scheme called Active PI algorithm (A-PI) is proposed, which employed double sets of parameters applying one set of parameters for fast response and the other for achieving queue’s stability. A-PI controller uses threshold to shift parameter smoothly, and it can be implemented easily. Analysis and simulation results show that under various network conditions A-PI controller has a fast response and a good performance in stability.
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Received: 10 November 2005
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2007, Vol. 29 
