基于区分服务的主动队列管理算法研究  

Research on DiffServ-Based Active Queue Management Algorithm

作　　者：张振[1] 周井泉[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,江苏南京210003

出　　处：《计算机技术与发展》2011年第2期109-111,115,共4页Computer Technology and Development

基　　金：国家"863"计划基金资助项目(2009AA01Z202);江苏省科技支撑项目(BE2008134)

摘　　要：分析了几种主动队列管理算法。RIO算法是用于支持区分服务确保转发逐跳行为的主动队列管理算法,它是对RED算法的简单扩充,但是该算法的性能对配置参数敏感。PI算法是基于控制论的主动队列管理算法,具有队列长度抖动小的特点。PIP算法是PI算法的改进,比PI算法具有更快的收敛速度。为了更好地满足AF PHB的要求,基于PIP算法,结合三色标记器的功能,提出一个新的主动队列管理算法PIPGYR(PIP with Green & Yellow & Red)。通过仿真验证,该算法队列长度抖动小,同时能够保护高优先级分组。Analyze some major active queue management（AQM）algorithm.RIO is the active queue management（AQM） algorithm for DS（Differentiated Services）AF PHB（Assured Forwarding Per Hop Behavior）,which is based on random early detection.As the performance of RED is sensitive to configuration parameters,the performance of RIO（RED with IN and OUT） is also sensitive to configuration parameters.PI（Proportional Integral） is the AQM algorithm based on control theory and has smaller queue length oscillation than RED.PIP improves the convergence speed of PI.To meet with requirements of AF PHB,design a new AQM for DiffServ AF PHB based on PIP,cooperating with three colors maker which is called PIPGYR（PIP with GreenYellowRed）.The simulation results indicate that this algorithm has smaller queue oscillation than RIO and can protect high-priority packets.

关 键 词：主动队列管理 区分服务 确保转发 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]