一种降低丢包率的主动队列管理改进算法  

An Improved Algorithm of Active Queue Management to Reduce the Lost Rate of the Package

作　　者：张洁[1] 韩波[1] 卢琼[1] 

机构地区：[1]商洛学院数学与计算机应用学院,陕西商洛726000

出　　处：《商洛学院学报》2014年第2期21-23,56,共4页Journal of Shangluo University

基　　金：商洛学院教育教学改革研究项目(12JYJX222);商洛学院科研基金项目(13SKY009);陕西省教育厅专项科研计划项目(12JK0950)

摘　　要：在网络拥塞控制(AQM)策略中,RED算法控制参数的设置和网络变化很敏感。这种敏感性严重影响了RED算法在实际中的应用,新策略HERED在RED中使用风险率评估的包丢弃方法。该方法能够根据负载情况动态调整弃包策略,即在轻负载时减缓弃包,在重负载情况下加速弃包。通过基于linux平台使用NS-2网络仿真工具证明了,在各种RED策略中,HERED能够实现更稳定的吞吐率,且由于弃包率最低而具有更好的性能。In network congestion control （AQM） strategy, the RED algorithm control parameters setting is very sensitive to changes and network. This sensitivity has seriously affected the RED algorithm in the practical application, a new strategy called HERED used in RED packet discard method of risk assessment. The method can dynamically be adjusted according to load condition to refuse package strategy, namely in slow abandon package with light loads, under the condition of heavy load acceleration package. Based on Linux platform using NS - 2 network simulation tools proved, in a variety of RED strategy, HERED can achieve more stable throughput, and the lowest package rate and has better performance.

关 键 词：主动队列管理 拥塞 随机早期检测 风险均数 

分 类 号：O243[理学—计算数学]