TFRC拥塞控制策略的研究和改进  

Research and Improvement of TFRC Congestion Control Mechanism

作　　者：王传安[1,2] 葛华[1] 赵海燕[1,2] 

机构地区：[1]安徽科技学院,凤阳233100 [2]江苏大学计算机科学与通信工程学院,镇江212013

出　　处：《计算机系统应用》2011年第3期70-73,共4页Computer Systems & Applications

基　　金：安徽科技学院引进人才基金(ZRC2010255);安徽自然科学基金(KJ2009B121Z)

摘　　要：分析了目前在实时业务中常用的拥塞控制机制TFRC。针对实时流媒体要求低延迟和低抖动的特点,提出将单程传输延迟的抖动作为反馈信号来调节发送端的发送速率,并针对抖动阈值的选定采用了自适应的调节方法。仿真结果表明改进后的算法减小了延迟抖动,提高了相关的服务质量。The congestion control mechanism TFRC,which is widely used in current real-time streaming media,is analyzed in this paper.A proposal aiming at the requirement for short delay and jitter of real-time streaming media has been made to adjust to the transmit rate of the sender to the change of single trip delay jitter.Meanwhile,a dynamic adaptive method is used in the determination of the jitter threshold.The result of simulation indicates that with the improved algorithm the jitters has been reduced remarkably and other related QoS has also been improved.

关 键 词：拥塞控制 TCP友好性 实时业务 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]