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计算机工程 ›› 2006, Vol. 32 ›› Issue (18): 90-91,1. doi: 10.3969/j.issn.1000-3428.2006.18.032

• 网络与通信 • 上一篇    下一篇

LEO卫星网络TCP拥塞控制算法改进研究

拱长青1,2,赵志刚1,王光兴1   

  1. (1. 东北大学信息科学与工程学院,沈阳 110004;2. 沈阳航空工业学院计算机学院,沈阳 110034)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-09-20 发布日期:2006-09-20

Research of TCP Congestion Control Algorithm over LEO Satellite Networks

GONG Changqing1,2,ZHAO Zhigang1,WANG Guangxing1   

  1. (1. School of Information Science & Engineering, Northeastern University, Shenyang 110004; 2. College of Computer, Shenyang Institute of Aeronautical Engineering, Shenyang 110034)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-09-20 Published:2006-09-20

摘要: 基于Vegas拥塞控制算法提出了一个适合于LEO卫星网络环境的TCP拥塞控制算法(Vegas-AB),该算法是Vegas算法和Vegas-A算法的调和,可以动态地改变Alpha、Beta,Vegas-AB算法与Vegas-A算法的主要分支大体保持一致。在拥塞避免阶段,Vegas-AB算法更激进、更富有侵略性。仿真结果表明,在TCP吞吐量上,Vegas-AB算法优于Vegas算法和Vegas-A算法。

关键词: LEO卫星网络, TCP, 拥塞控制

Abstract: Based on TCP Vegas congestion control algorithm, this paper presents Vegas-AB algorithmr. This algorithm can be fit for Iridium-similar LEO satellite networks. The improvement idea of Vegas-AB algorithm comes from Vegas and Vegas-A algorithms; it is the harmonization of two algorithms. The name of Vegas-AB means that this algorithm can change its parameters Alpha and Beta, and the main outline of Vegas-AB algorithm is still in accordance with Vegas-A algorithm. During congestion avoidance, the target of Vegas-AB algorithm, Vegas-AB algorithm is more radical and aggressive. Simulation results show that Vegas-AB algorithm is superior to Vegas and Vegas-A algorithms in throughput and round trip time.

Key words: LEO Satellite Network, TCP, Congestion Control

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