改进的AQM在拥塞控制中的应用策略  

Strategy for congestion control based on improved AQM

作　　者：魏星光[1] 刘渊 

机构地区：[1]江南大学信息工程学院,江苏无锡214122 [2]江南大学数字媒体创意中心,江苏无锡214122

出　　处：《计算机工程与应用》2010年第4期83-85,116,共4页Computer Engineering and Applications

基　　金：国家部委基础科研项目

摘　　要：随着计算机网络的持续快速发展,各种网络需求不断涌现,拥塞控制成为保证网络的稳定性和鲁棒性的重要因素,拥塞控制的发展要求网络本身也要参与其中。传统的端到端机制不能解决所有的拥塞问题,作为主动管理队列算法的REM原算法由于对RTT的不精确估计导致不能准确反应网络中拥塞状态。根据控制论中将链路价格化的方法,对REM算法的进行了改进,提出了新的拥塞控制机制。仿真实验表明,该方法能有效减少包的丢失,提高系统性能。With the rapid development of Internet,various applications based on the Internet have emerged.The congestion control becomes a most important protocol which improves the Internet＇s stability and robustness.Its development requires network to manage itself.The traditional end to end strategy can not solve all congestion problems.As a result of imprecise estimate on RTT, original REM is not able to accurately reflect the congestion state.Based on the cybernetics and REM algorithm,an improved AQM algorithm and a congestion control strategy are proposed.The simulation result shows that the new one can effectively decrease the packet loss rate and improve network performance.

关 键 词：拥塞控制 主动队列管理 随机指数标记 链路价格 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]