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The Research on the ABR Congestion Control Algorithm in Satellite ATM Based on Onboard Processing

WANG Yong qian,MA Zheng xin,CAO Zhi gang (Dept.of Electronic Engineering,Tsinghua University,Beijing 100084,China)  
Satellite ATM(Asychronous transfer mode) is a hot research area of satellite communication in recent years and congestion control is one of the key issues.This paper focuses on the ABR(Available bit rate) congestion control algorithm in the satellite ATM network based on onboard processing,which is implemented by using the traffic prediction.Owing to the long propagation delay of satellite channel,the accuracy of prediction decreases and it degrades the performance of ABR congestion control.In order to overcome the impact of inaccuracy,a new method ‘Long time prediction plus dynamic control bandwidth utilization factor’ is suggested.Simulation results show that this method has advantages on the cell loss probability,link usage,fairness,adaptation to different number of TCP(Transport Control Protocol) sources and transient response.
【Fund】: 国家自然科学基金!(No.69772 0 2 2 )
【CateGory Index】: TN927
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Chinese Journal Full-text Database 10 Hits
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