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本文提出了一个分层的实时视频传输系统模型CRR .在CRR中 ,作者设计了一个高效的应用级的Mul ticast协议RTMTP ,利用逻辑时钟和缓冲队列的处理保证视频传输的实时性 ;加入了分层的反馈 调整机制以改进对网络流量的管理 ,避免了传统模型中集中处理、灵活性较差的流量控制 ;通过Repeater实现了QoS的层次化 ,还解决了Multicast报文的转发问题 .最后介绍了CRR模型的实现技术 ,测试了基于该模型的实例系统VirtualLab的性能
This paper presents a hierarchical real-time video transmission system model CRR. In CRR, the author designed an efficient application-level Muliticast protocol RTMTP, using the logic clock and buffer queue processing to ensure the real-time video transmission; joined the points Layer feedback adjustment mechanism to improve the management of network traffic to avoid the traditional model of centralized processing, poor flexibility of traffic control; Repeater to achieve the QoS level, but also to solve the multicast message forwarding problem. The realization of CRR model technology, test based on the model of the performance of the system VirtualLab