摘要
同步是在因特网中实现多媒体实时通信的关键问题 .现有的网络元素 ( NE)的调度机制不能保持相关流的流间同步关系 .结合 RSVP和 WFQ调度机制提出一个多媒体实时通信的模型方案 ,在同一端到端路径为多个相关流预留资源 ,沿路各网络元素对这些相关流进行相关调度 ,保持相关流数据单元间稳定的同步关系 ,从而大大减少目的端相关流数据单元的时差和抖动 。
Synchronization is very important for multimedia real time communication in Internet. Scheduling mechanisms can't maintain the synchronization relationship among correlative streams at the network elements(NEs) today. A multimedia real time communication model is proposed based on RSVP and WFQ. By reserving resources for correlative streams in the same end to end path, and by doing correlative scheduling for these streams at each network element(NE) along the path, the steady timing relationship among the correlative streams' data units can be easily maintained. Thus the sinks can do synchronization easily because the time difference and delay jitter among correlative streams' data units can be reduced greatly through using this method.
出处
《计算机研究与发展》
EI
CSCD
北大核心
2001年第3期257-262,共6页
Journal of Computer Research and Development
基金
国家科技项目专题!(96 -4 14 -0 5 -11)
铁道部科技发展基金项目!(96 -4 14 -0 5 -11)
