Layered MPEG video transmission over IP DiffServ
Layered MPEG video transmission over IP DiffServ
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DOI：
10.1109/itcc.2005.183
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发表时间：
2005-04
期刊：
影响因子：
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通讯作者：
Hong Zhao;N. Ansari;Y. Shi
中科院分区：
文献类型：
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作者：
Hong Zhao;N. Ansari;Y. Shi
多媒体应用已经成为通过网络传输的主要业务之一。这些应用需要高带宽和严格的服务质量（QoS）。最终视频质量不仅由网络QoS决定，而且由编码视频质量决定。我们认为，从这两个方面的视频质量，并建议传输空间可伸缩编码的视频与不同的下降优先级的DiffServ（区分服务）。性能分析和仿真结果表明，该算法能够提供QoS保证。在出口路由器处提出的丢弃策略可以减少流量负载以及其他域中的拥塞风险。
Multimedia applications have become one of the major traffic to be transported through networks. These applications require high bandwidth and stringent quality of service (QoS). The end video quality is determined not only by the network QoS but also by the encoded video quality. We consider video quality from these two aspects and propose to transport spatial scalable encoded videos with different dropping priorities over DiffServ (differentiated service). Performance analysis and simulation results show that this can provision QoS guarantees. The dropping policy we propose at the egress router can reduce the traffic load as well as the risk of congestion in other domains.