Analysis and Comparison of Congestion Control Protocol in High Bandwidth-delay Product Networks
Ye Jin · Journal of Chinese Computer Systems · 2009
High-speed networks with large bandwidth-delay product present a unique environment where current TCP may have a major challenge to its performance(e.g.throughput deterioration,flow oscillation).A number of new TCP congestion control algorithms have been suggested to address these problems in the last few years.This paper firstly categorizes these protocols to loss-based,delay-based and ECN based three groups and describes all these protocols.Based on this study,we emphatically analyze the influence of RTT,router buffer size and AQM algorithm to the performance of congestion control protocol.Lastly a general performance comparisons and analysis result of most representative protocols are given using ns2 simulator.Subsequently,the paper summarizes the current existing open issues,and provides some further interesting directions.