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《Journal of Zhejiang University(Engineering Science)》 2007-04
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RF-RED:improved RED algorithm based on rate fairness

CAI Wen-yu,ZHANG Yu,JIN Xin-yu,CHEN Kang-sheng (College of Information Science and Engineering,Zhejiang University,Hangzhou 310027,China)  
In order to improve the fairness between responsive streams and unresponsive streams,an improved random early detection(RED) mechanism based on rate fairness,which is named rate fairness random early detection(RF-RED),was proposed.The RF-RED algorithm calculates the average rate of user datagram protocol(UDP) streams on the router and compares it with the TCP-friendly rate,then adjusts the maximum drop rate of transmission control protocol(TCP) stream and UDP stream according to the above result,at last updates the instantaneous drop rate of TCP stream and UDP stream with the RED algorithm.Using RF-RED algorithms,UDP stream is turned into TCP-friendly stream on the bottleneck link and the fairness of bottleneck bandwidth usage of TCP and UDP stream can be improved.The simulation results verified the effectiveness of RF-RED.
【CateGory Index】: TP393.02
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