VBR MPEG-2在ATM上扩展AAL5的建议

Proceedings of IEEE International Conference on Multimedia Computing and Systems Pub Date : 1997-06-03 DOI:10.1109/MMCS.1997.609784

A. Mehaoua, R. Boutaba, G. Pujolle

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引用次数: 5

摘要

在ATM网络上传输VBR MPEG-2应用需要有效的机制来最小化在丢失情况下的视频质量下降。控制端到端性能的关键因素是ATM适配层。aal5是目前最常用的，但对于可变比特率视频来说仍然不够。我们提出了一个新的特定于服务的汇聚子层来改进aal5的功能。提出了一种MPEG-2视频流封装策略和一种新的小区优先级分配方案。

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Proposal of an extended AAL5 for VBR MPEG-2 over ATM

Transmission of VBR MPEG-2 applications over ATM networks requires efficient mechanisms to minimize video quality degradation in situation of loss. The key factor that controls the end-to-end performance is the ATM adaptation layer. AAL 5 is currently the most commonly used but is still inadequate for variable bit rate video. We propose a new service specific convergence sublayer to improve AAL 5 capabilities. An MPEG-2 video stream encapsulation strategy and a new cell priority assignation scheme are also presented.

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Proceedings of IEEE International Conference on Multimedia Computing and Systems

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