摘要
提出一种边缘到边缘的动态流量控制机制—e2e-DFCM。e2e-DFCM工作原理是:发送端视频网关SVG对携带视频流质量标识QLI的报文聚集并重新进行QoS等级映射,接收端视频网关RVG周期地发送延迟、报文丢失等多播流状态信息;SVG根据QLI和RVG反馈的多播流状态信息对报文进行重新映射和分类,并基于效用动态分配各等级带宽,一旦接收端的服务质量不满足要求(平均延迟、丢失率超出承受范围),RVG甚至要求降级,SVG将降低发送速率。最后给出的模拟验证了e2e-DFCM机制的有效性。
An edge-to-edge dynamic flow control mechanism --e2e-DFCM was proposed.The main idea of e2e-DFCM is as follows：The QoS level of packets which had been labeled with quality level identifier（QLI） was gathered and remapped by sending video gateway（SVG）;Receiving video gateway（RVG） periodically sent multicast flow status information,including delay,loss rate,etc.;SVGs dynamically remapped and classified packets according to QLI and flow status information feedback from RVG,and reassigned each QoS level flow rates based on their utilities.Once the QoS of receivers could not be satisfied（i.e.,average delay and loss rate exceed the tolerable range）,RVG even requested to down-grade its level,and SVG would reduce the sending rate.In the end,simulation results demonstrate e2e-DFCM＇s effectiveness.
出处
《通信学报》
EI
CSCD
北大核心
2010年第10期88-97,共10页
Journal on Communications
基金
国家重点基础研究发展计划("973"计划)基金资助项目(2009CB320503)
国家高技术研究发展计划("863"计划)基金资助项目(2008AA01A323
2008AA01A325
2009AA01A334)~~
