| 基于实测流量的网际分组丢失率分析 |
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| 引用本文： | 米婷,丁伟.基于实测流量的网际分组丢失率分析[J].通信学报,2013,34(Z2):6-26. |
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| 作者姓名： | 米婷 丁伟 |
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| 作者单位： | 1. 东南大学 计算机科学与工程学院，江苏 南京 211189；2. 江苏省计算机网络技术重点实验室，江苏 南京 211189 |
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| 基金项目： | 国家重点基础研究发展计划(“973计划”)基金资助项目(2009CB320505) |
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| 摘 要： | 分组丢失率是评价网络性能的一个重要指标。提出了一种利用完整TCP流计算实测数据中分组丢失率的方法，并基于实测数据对CERNET江苏省网与外部不同网络分区的分组丢失率进行分析。算法给出了基于实测数据的分组丢失率包括首次分组丢失率pfl、整体分组丢失率psl和重传率prp 3个测度。统计分析表明，在绝大多数情况下，pfl比psl小，而prp比pfl和psl明显要高，验证了分组丢失对网络性能的影响以及重传率明显比分组丢失率高。
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| 关 键 词： | 分组丢失率 重传率 实测流量 TCP流 分区实验 |
| 收稿时间： | 9/4/2013 12:00:00 AM |
Analysis of packet loss rate based on the measured traffic |
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| Ting MI,Wei DING.Analysis of packet loss rate based on the measured traffic[J].Journal on Communications,2013,34(Z2):6-26. |
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| Authors: | Ting MI Wei DING |
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| Affiliation: | 1. School of Computer Science and Engineering,Southeast University,Nanjing 211189,China;2. The Key Laboratory of Computer Network Technology,Nanjing 2l1189,China |
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| Abstract: | The packet loss rate is one of key indicators to evaluate the performance of network. A method for calculating packet loss rate in the measured data based on the intact TCP flows was presented. Based on the measured data, the packet loss rate of Jiangsu Province in CERNET network and different partitions outside was analysed. The algorithm gives the packet loss rate including first packet loss rate pfl, overall packet loss rate psl and retransmission rate prp. Through statistical analysis, pfl is smaller than psl in the vast majority of cases, and prp is significantly higher than pfl and psl, which proves the impact of packet loss on the performance of network, and retransmission rate is obviously higher than packet loss rate. |
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| Keywords: | packet loss rate retransmission rate measured traffic TCP flow partition experiment |
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