带宽测量技术中背景流量特征和影响

端到端的带宽测量技术一直是研究的热点.现在有很多测量带宽的方法和工具,但是它们的测试环境特别是背景流量的设置,都是不相同的.首先调查了各种方法提出的测试环境;然后通过实验证明了不同的背景流量会影响到测试结果;最后提出了生成公平背景流量的新方法.该方法具有实际网络流量的特性,也便于在模拟环境中实现,可作为测量带宽算法的评估标准.

The Effect of Cross-Traffic in Bandwidth Estimation

Bandwidth estimation is the hot topic of the research. There are many bandwidth estimation tools but we argue that the evaluation environments of those tools, especially cross-traffic, are not the same. So the evaluations are not fair. In this paper, we first survey algorithms of various methods and cross-traffic features they used in their evaluation. Then we demonstrate the characte~ of cross-traffic are crucial to the estimation results. We propose a novel cross-traffic generator which can generate Internet-like traffic and can be easily implemented in the simulation environment. Preliminary test shows that our generator can be used in Interne relative algorithms evaluations.