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 characters 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 Internet relative algorithms evaluations.
Key words: Bandwidth Estimation; Cross-traffic
摘 要: 端到端的帶寬測(cè)量技術(shù)一直是研究的熱點(diǎn)。現(xiàn)在有很多測(cè)量帶寬的方法和工具，但是它們的測(cè)試環(huán)境特別是背景流量的設(shè)置，都是不相同的。首先調(diào)查了各種方法提出的測(cè)試環(huán)境；然后通過(guò)實(shí)驗(yàn)證明了不同的背景流量會(huì)影響到測(cè)試結(jié)果；最后提出了生成公平背景流量的新方法。該方法具有實(shí)際網(wǎng)絡(luò)流量的特性，也便于在模擬環(huán)境中實(shí)現(xiàn)，可作為測(cè)量帶寬算法的評(píng)估標(biāo)準(zhǔn)。
關(guān)鍵詞: 帶寬檢測(cè); 背景流量