基于移动速率阈值调整的Web流友好标记算法  

Web traffic friendly mark algorithm based on moving rate threshold altering

作　　者：赵海亮[1] 黄生叶[2] 

机构地区：[1]湖南交通职业技术学院信息管理系,湖南长沙410014 [2]湖南大学计算机与通信学院,湖南长沙410082

出　　处：《计算机工程与设计》2007年第19期4762-4765,共4页Computer Engineering and Design

基　　金：湖南省自然科学基金项目(06JJ20030)

摘　　要：区分服务中的包标记算法存在的共同问题是其无法对长、短业务流提供相同级别的保护,尤其带小窗口限制的Web流易遭遇丢包。因而提出了一个Web流友好滑动窗口机制WFTSW,新算法基于改进的三色滑动窗口机制TswTCM,并根据拥塞窗口信息动态调整速率阈值,保证短流获得更高级别的保护。仿真结果验证了该标记算法的有效性和公平性。A problem common to packets markers used in Diffserv architectures is their inability to provide a similar level of protection to long- and short-lived flows alike. Specifically, web traffic which suffer from packet losses at small congestion windows. A scheme named web traffic friendly TSW （WFTSW） is presented, based on improved TswTCM scheme, using the congestion window size （cwnd）, WFTSW alter a rate threshold dynamically so as to offer short-lived flows a greater level of protection. The simulation results verify that our marking mechanism is feasible and fair.

关 键 词：服务质量 区分服务 WEB业务 包标记 算法 公平性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]