Multiplexing Video Traffic Using Frame-skipping Aggregation Technique

MPEG, the Mowing Picture Experts Group, is a popular compression standard used in many multimedia applications. I n video distribution systems, a CBR communications channel is often shared among several VBR MPEG video streams. Since there are fluctuations of data rates an video streams, t ra f ic congestion may occur and video quality may he aflected. W e propose a frame-skipping aggregation technique to multiplex several M P E G streams (outside the network) to f e e d into a CBR channel (within the network). The salient feature of the scheme is that the transmission of B frames wall he skipped (outside the network) before the onset of t ra f i c congestion so as to minimize the image quality degradation. Our result shows that using this technique, more users can he supported compared t o regular video transmission systems. This technique allows us to adopt a simple call admission strategy an which video requests are granted based on their mean rates.