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《Acta Electronica Sinica》 2002-S1
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An Intelligent Packet Dropping Mechanism for Active Queue Management

REN Feng-yuan,LIN Chuang(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China)  
Active Queue Management maintains the smaller queuing delay and higher throughput by purposefully dropping packets at the intermediate nodes, and is becoming a focus in field of TCP end-to-end congestion control. Most of the existing AQM algorithms follow the probability-based packet dropping mechanism originated from RED, which is disadvantage to the router performance optimization because random number generation needs rather computational effort.In this paper,the congestion index is put forward to quantificationally describe the network congestion state. Then, a novel intelligent packet dropping mechanism is designed based on fuzzy logic.The off-line inference greatly simplifies on-line process,and thus it is very beneficial to optimize the router performance. The simulation results show that the intelligent mechanism is superior to the classical RED algorithm. It is insensitive to load variance, and able to resist against the disturbance caused by burst and short-lived http sessions,and non-elastic UDP connections, which is very suitable for the rapidly changeful network environment.
【Fund】: 国家自然科学基金(No.60273009和90104002);; 国家重点基础研究发展规划(973计划)项目(No.G1999032707); 国家高技术研究发展计划(863计划)课题(No.2001AA112080);; 清华大学信息学院985基础创新研究基金
【CateGory Index】: TP393.02
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2 GE Long,WAN Chun-fang,SUN Jin-sheng,WANG Zhi-quan(School of Automation,NUST,Nanjing 210094,China);Active Queue Management Algorithm Based on Fuzzy Control[J];Journal of Nanjing University of Science and Technology(Natural Science);2008-02
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1 Du Zhaofeng Yu Zhongcheng Duan Junyi Institute of Information Engineering,YanShan University,QinHuang Dao,066004;A Active Queue Management Based Fuzzy Control[A];[C];2007
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5 YIN Feng-jie,JING Yuan-wei,YUE Xiao-ning (School of Information Science & Engineering,Northeastern University,Shenyang 110004,China.);Design of a Robust Active Queue Management Algorithm Based on Fuzzy Variable Structure Control[J];JOURNAL OF NORTHEASTERN UNIVERSITY;2006-03
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9 Jia Yongxing Chen Ming (Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210016,China);Architectural research of providing guaranteed services for differentiated services network[J];Journal of Southeast Univwrsity(Natural Science Edition);2002-01
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【Secondary References】
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1 QU Feng~1,YAN Da-yuan~2(1.NO.91655 Army of PLA,Beijing 100036,China;2.School of Information Science and Technology,Beijing Institute of Technology,Beijing 100081,China);Modified RED algorithm based on dynamic partial buffer sharing mechanism[J];Journal of PLA University of Science and Technology(Natural Science Edition);2006-05
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