基于优先级带宽保证和权值改进的WFQ算法研究  

Research of WFQ based on Priority Bandwidth Assurance and Weight Improvement

作　　者：林幼文 罗永有[2] 

机构地区：[1]北海职业学院电子信息工程系,广西北海536000 [2]柳州城市职业学院现代教育技术中心,广西柳州545036

出　　处：《广西民族大学学报（自然科学版）》2017年第2期82-86,共5页Journal of Guangxi Minzu University ：Natural Science Edition

基　　金：广西高校中青年教师基础能力提升项目:"共享动态缓冲NoC路由器设计与研究"(2017KY1264);广西高校中青年教师基础能力提升项目:"拟态路由器关键技术研究"(KY2016YB775)

摘　　要：随着网络不断发展,实时性高的多媒体应用对网络提出更高的QoS需求.在分析加权公平排队WFQ算法在链路拥堵时不能保证低速率实时业务流要求及突发业务流时延迟加大,信号吞吐量低和误码率高等缺陷情况下,提出SRWFQ算法,引入优先级带宽保证和权值调整两项因子,经过NS-2网络仿真器在时延、网络吞吐量和丢包率QoS参数方面对两种算法进行仿真比较,通过仿真分析表明,SRWFQ改进算法能很好地支持实时业务流.With the development of the internet, some multimedia applications with real-time has high- er QoS demand. This paper proposed an algorithm named SRWFQ concerning that WFQ algorithm cannot guarantee the low-rate real-time traffic flow and high burst traffic delay, low signal throughput and high bit error rate as congestion occurs through bringing the two factors of priority bandwidth assurance and weight adjustment into consideration. Using NS-2 network simulator to simulate improved algorithms in QoS param- eters of latency, throughput and packet loss rate, the simulation analysis shows that the SRWFQ improved algorithm is able to support the real-time traffic flow.

关 键 词：加权公平排队 优先级带宽保证 权值调整 实时业务流 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]