CAJ | 학술논문

提出一个面向单条链路的 TCP 综合传输性能测度 R,分析其与同一时间粒度内链路的占用带宽和 UDP流量比例间的关系,使用中国和美国2条主干信道的实测数据进行了检验.结果表明 R 测度可表示为以占用带宽和 UDP 流量比例为参数的正态分布的随机过程.随后进行的 CERNET 链路 R 测度正态分布均值参数的拟合分析具有很高的可接受水平,拟合的结果给出的量化关系可用于流量的公平性评价.
제출일개면향단조련로적 TCP 종합전수성능측도 R,분석기여동일시간립도내련로적점용대관화 UDP류량비례간적관계,사용중국화미국2조주간신도적실측수거진행료검험.결과표명 R 측도가표시위이점용대관화 UDP 류량비례위삼수적정태분포적수궤과정.수후진행적 CERNET 련로 R 측도정태분포균치삼수적의합분석구유흔고적가접수수평,의합적결과급출적양화관계가용우류량적공평성평개.
A single link-oriented TCP transmission performance metric called "R" was proposed. The relationship be-tween metric R and two indicators (the utilized link bandwidth and the UDP traffic proportion) on the same link was ana-lyzed, and the experiment results on passive measurement datasets from two bidirectional network links separately locat-ed in USA and China were laid out. The results show that the metric R can be expressed as a normally distributed sto-chastic process with distinct parameters decided by the utilized bandwidth and the UDP traffic proportion. Further, by using fitting methods on local datasets, a concrete function, which was acceptable at a high confidence level, was given to describe the relationship between the mean value of R's normal distribution and the two indicators mentioned before. This work offers a reference to the study of network fairness.