Prioritized transmission of variable bit rate MPEG video

The traffic characteristics of an MPEG coder which generates a high-priority and a low-priority bit stream are studied. The prioritization scheme for the coder assigns components of the data stream to each priority level based on the value of a parameter B. Statistics of both high- and low-priority cells for a pure intraframe and a mixed interframe/intraframe coder are presented. In particular, the probability mass functions on a cells per slice basis of the high-priority and low-priority component for various values of B are shown. Statistics gathered from this type of prioritization scheme can be applied in several ways for network design and operation.<
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