A network-supported approach to layered multicast
A network-supported approach to layered multicast
复制标题
一种网络支持的分层多播方法
DOI：
10.1109/icc.2001.936880
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Aoyama
中科院分区：
文献类型：
--
作者：
K. Nakauchi;H. Morikawa;T. Aoyama
分层多播与分层源编码方案，使实时流媒体在异构网络，如互联网的有效分布。在分层多播中，由于优先级较高的层中的分组丢失会导致接收质量的更大下降，因此需要速率控制来快速科普拥塞。此外，速率控制分层多播，以确保公平的带宽分配之间的竞争分层多播会话在拥塞的链路独立的开始时间。提出了一种新的分层组播速率控制方案，称为网络支持的分层组播（NLM）。在NLM中，分布在网络中的路由器支持速率控制。NLM避免了高优先级层上的数据包丢失，并通过过滤和信令实现了公平的带宽分配。路由器在检测到拥塞或通过信令通知不需要某个层时，会过滤优先级较低的层。仿真结果表明，NLM提供了显着的优势相比，接收机驱动的速率控制。
Layered multicasting with a layered source coding scheme enables efficient distribution of real-time streaming media over heterogeneous networks such as the Internet. In layered multicast, rate control is required to cope with congestion quickly because packet losses in a layer with higher priority lead greater degradation of the received quality. In addition, rate control for layered multicast is required to assure fair bandwidth allocation among competitive layered multicast sessions at a congested link independent of their start time. We present a novel rate control scheme for layered multicast, called network-supported layered multicast (NLM). In NLM, routers distributed within the network support rate control. NLM avoids packet losses on a layer with high priority and achieves fair bandwidth allocation by filtering and signaling. A router filters a layer with low priority when it detects congestion, or when it is informed that the layer is needless by signaling. Simulation results show NLM offers significant advantages compared with receiver-driven rate control.