基于有损网络编码的qos感知多速率H.264可扩展视频多播

S. Jina, S. Tarnoi, W. Kumwilaisak
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引用次数: 2

摘要

提出了一种基于网络编码的有损网络下的多速率H.264可扩展视频组播。我们首先根据视频层对端到端视频质量的影响对其进行优先级排序。在QoS保证的约束下,每个视频层通过优化框架得到的路径进行路由。不同的目的地可能会收到不同数量的视频层,这取决于它们的最大流量。通过使用网络编码来解决网络中的瓶颈,以确保所有目的地都能接收到等于其最大流量的速率。网络编码只在同一层内应用。在随机生成网络下的仿真和数值结果表明,该方案在端到端视频的客观质量和主体质量方面具有优势。
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QoS-aware multi-rate H.264 scalable video multicast with network coding in lossy networks
This paper proposes a new multi-rate H.264 scalable video multicast in lossy network using network coding. We first prioritize video layer based on its effect to the end-to-end video quality. Each video layer is routed via the path obtained from the optimization framework under the constraints on QoS guarantees. Different destinations may receive different number of video layers depended on their max flows. The bottleneck in the network is resolved by using network coding to ensure that all destinations can receive the rate equaling their max flows. The network coding is only applied within the same layer. Simulation and numerical results under randomly generated networks show the advantage of the proposed scheme in terms of objective and subject qualities of the end-to-end video.
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