一种基于概率密度函数的IP网包乱序行为评价指标  

An Evaluation Metrics of IP Network Packet Reordering Based on the Probability Density Function

作　　者：曾彬[1] 张大方[1] 黎文伟[1] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082

出　　处：《计算机工程与科学》2005年第4期76-77,83,共3页Computer Engineering & Science

摘　　要：目前,因特网端到端行为的研究多集中在包延迟、包丢失等测量指标的研究上,对包乱序行为却没有深入的研究,也缺乏能精确、全面反映包乱序程度的评价指标。本文针对包乱序行为,提出了一种基于概率密度函数的评价指标———包乱序密度函数。该指标能精确、直观地量化包乱序的程度。最后,本文通过在中国教育和科研网选取的链路进行实际测量分析,使用该指标对所测链路的包乱序行为进行了评价,并初步总结了包乱序的行为特征。At present the study on packet behaviors only focuses on measurement metrics such as packet delay and packet loss. Few people make in-depth study on how to evaluate packet reordering and there is also no precise and complete metrics for packet reordering. For measuring packet reordering, this paper puts forward an evaluation metric based on the probability density function which can quantitatively measure the degree of packet reordering. In the end, by measuring and analyzing packet reordering of the link in CERNET, we preliminarily summarize the behavior characteristics of packet reordering.

关 键 词：因特网 概率密度函数 网络行为 数据包 IP网 包乱序行为评价指标 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术]