摘要
TCP友好速率控制(TFRC)是用于对非TCP流进行拥塞控制的一种机制。由于无线环境下数据传输的丢包不一定是网络拥塞引起的,因此采用原有的TFRC协议常常会导致误操作。采用有偏队列管理策略,这个策略可以添加到任何主动队列管理机制中去区分拥塞丢包和非拥塞丢包,减少不必要的拥塞控制,使无线网络的传输性能得以提高。通过网络模拟软件进行模拟实验,验证了此方法对无线网络传输速率的稳定性有明显改善,保证了应用层的QoS。
TCP Friendly Rate Control(TFRC) is a congestion control mechanism designed for non-TCP flows.Due to that not all losses are related to congestion in wireless network,to adopt initial TFRC will induce maloperations.In the paper,biased queue method was used to distinguish congestion losses from random losses.It would prevent unnecessary congestion control and would improve the quality of transmission in wireless networks.Through simulations and experiments,it is found that the method can greatly improve the s...
出处
《计算机应用》
CSCD
北大核心
2009年第3期672-674,共3页
journal of Computer Applications
基金
贵州省科学技术基金资助项目(黔科合J字[2007]2206号)
贵州省教育厅自然科学基金资助项目(黔高教发[2006]354号)
关键词
实时多媒体流
拥塞
速率控制
有偏队列
TFRC
real-time streaming media
congestion
rate control
biased queue
TCP-Friendly Rate Control（TFRC）
