An Improved Marking Mechanism for Real-Time Video over DiffServ Networks
An Improved Marking Mechanism for Real-Time Video over DiffServ Networks
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DOI：
10.1007/978-3-540-77255-2_66
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发表时间：
2007-12
期刊：
影响因子：
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通讯作者：
Lishui Chen;Guizhong Liu;F. Zhao
中科院分区：
文献类型：
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作者：
Lishui Chen;Guizhong Liu;F. Zhao
众所周知，在视频应用中，由于高级视频编码标准所采用的帧间预测架构，在编码/解码顺序中，前P帧比后P帧更重要。基于此，本文提出了一种信源标记机制，沿着提出了一种改进的双速率三色标记（ITRTCM）方案，该方案综合考虑了报文的信源标记值和当前网络状态。将ITRTCM的结果与双速率三色标记（TRTCM）、增强令牌桶三色标记（ETBTCM）和TypeMapping方法的结果进行了比较。
As is well known, in video applications the former P frames are more important than the subsequent P frames in coding/decoding order due to the inter-prediction architecture adopted by the advanced video coding standards. A source marking mechanism based on this fact is proposed accordingly in this paper, along with an improved two rate three color maker (ITRTCM) scheme, which takes into account both the source mark value of a packet and the current network status. The results of ITRTCM are compared with those of the two rate three color marker (TRTCM), the enhanced token bucket three color marker (ETBTCM) and the TypeMapping method.