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对现行TCP及改进版本在高带宽长距离环境(Fast Long-D istance,FLD)下存在的问题进行了研究。通过理论分析和实验验证比较了高带宽长距离环境下两种TCP拥塞控制算法。实验结果表明,FA ST TCP在快速收敛和吞吐率方面性能优越,而B IC在RTT公平性和TCP友好性方面更为突出。最后,指出了进一步的研究方向。
The problems existing in the current TCP and improved versions under the condition of Fast Long-D istance (FLD) are studied. Through theoretical analysis and experimental verification, two kinds of TCP congestion control algorithms in high-bandwidth and long-distance environments are compared. Experimental results show that FA ST TCP is superior in fast convergence and throughput while B IC is more prominent in RTT fairness and TCP friendliness. Finally, the direction of further research is pointed out.