Abstract:

Aiming at the problem of incompatibility of Vegas with Reno, this paper proposes an algorithm called ACNV(Adaptive Competitive New Vegas) to enhance bandwidth competitiveness of Vegas.The ACNV constantly adjusts its transmission bandwidth according to the estimated variation trend of buffer occupation ratio. In additionAnd it employs a prompt convergence algorithm to adjust its congestion control window to reasonable range as fast as possible. Simulation results show that compared withto Vegas, ACNV has a higher buffer occupation ratio to share the network resource with Reno in under different bottleneck link bandwidth (0.1 Mb/s~2 Mb/s). The average buffer occupation ratio raised raises from 4.3% to 48.33%.

Key words: fairness, self-adaptive, fast convergence

摘要：

针对TCP Vegas与Reno协议不兼容的问题，提出一种提高Vegas带宽竞争力的算法ACNV，通过估计带宽占有率的变化趋势调节调整源端对带宽资源的抢占力，并采用快速收敛到合理区间的窗口调整策略，达到ACNV与Reno公平分享带宽的目的。实验结果证明，当瓶颈链路带宽由0.1 Mb/s变化到2 Mb/s的过程中时，ACNV与Vegas相比，与Reno共存时平均带宽占有率的平均值从4.3%提高到48.33%。

关键词: 公平, 自适应, 快速收敛

CLC Number: 

• TP393