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Congestion Control in RED Algorithm

Author: GouZhiJian
Tutor: HouMengShu
School: University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: TCP congestion control IP Congestion Control RED Self-similar Fairness
CLC: TP393.07
Type: Master's thesis
Year: 2008
Downloads: 124
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Abstract


With the sustained and rapid development of computer networks , the demand for a variety of network applications continue to emerge, caused by the proliferation of network data traffic . The problem of network congestion has become increasingly serious network congestion control has been the key to one of the hot issues of network research . Currently , the TCP / IP network congestion control strategies mainly include two categories : TCP-based congestion control and congestion control based on IP . TCP congestion control introduces TCP congestion control process , including slow start , congestion avoidance , fast recovery and fast retransmit a more detailed description of the congestion control algorithm of TCP Tahoe, Reno, Vegas, Sack , select a representative of Reno and Vegas algorithm for the analysis and comparison of their performance in the NS platform simulation . IP congestion control introduces the basic ideas of the IP congestion control , as well as IP congestion control , queue scheduling and queue management , and highlights the representative of the queue management algorithm RED , its basic principles , characteristics , as well as the current improved RED algorithm to do the analysis and comparison . Provide better fairness characteristics RED algorithm can not be based on the self-similar characteristics of network data flow , a new improved RED algorithm based on fairness considerations : classify packets discarded by the RED algorithm , according to different classification conditions to determine the bandwidth of the data stream of the number of packets in the queue , as well as the rate of packets into the forwarding queue occupancy trends , in order to determine the RED drop / mark probability P calculated . The experiments show that the new RED algorithm has the better features of the fair .

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