一种基于速率的提高网络公平性拥塞控制算法  

Rate-based Congestion Control Algorithm for Networks Fairness Enhancement

作　　者：肖萍萍[1,2] 田彦涛[1] 杨晓萍[1] 

机构地区：[1]吉林大学通信工程学院,长春130022 [2]吉林工程技术师范学院信息工程学院,长春130052

出　　处：《系统仿真学报》2009年第24期7863-7867,共5页Journal of System Simulation

基　　金：国家自然科学基金(60675057)

摘　　要：针对无连接的UDP流量所导致的网络资源不公平使用的问题,从端到端策略、路由器控制两方面入手,提出了一种基于速率的实现网络公平性的拥塞控制机制RFCC。根据TCP速率响应函数,由发送方对UDP数据流的发送速率进行调整,路由器以ECN的方式将网络的早期拥塞反馈给发送方,并采用ERED算法,改善带宽受数据包大小影响的情况,接收方运用Markov链方式计算丢包事件率。仿真实验验证了RFCC流量与TCP流量能友好地共享瓶颈链路的带宽,提高了网络资源分配的公平性。From end-to-end strategy to router congestion control,a rate-based and enhanced-fairness congestion control mechanism （RFCC） was proposed,in view of the problem of the unfair usage to the network resources caused by non-connection UDP flows.The senders could adjust the sending rate of UDP flows by TCP response function.The routers executed early congestion state of network feedback to the senders using ECN,and adopted ERED algorithm to improve the situation where the bandwidth was influenced by packet size in the router.The receivers calculated packet loss rate used by Markov chain.The simulations validate that RFCC flows can friendly share the bandwidth of bottle-neck links with TCP flows,and enhance fairness of network resources allotment.

关 键 词：拥塞控制 公平性 显示拥塞通知 RED算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]