Supporting MPEG video VBR traffic in wireless networks

摘要

In this paper, we analyse the statistical data sets of several MPEG encoded videos and propose a mode] of the elements of a scene. We also propose and evaluate a novel dynamic bandwidth allocation scheme for MPEG video sources suitable for wireless networks. The proposed model permits the characterisation of the elements of the stream scenes. The proposed scheme is dynamic and pro-active. It automatically adjusts the amount of reserved resources, while guarantying the required QoS. It exploits the structure of the MPEG video stream and a]locates bandwidth on a scene basis. The dynamic bandwidth allocation algorithm which has been presented is evaluated using simulation and actual MPEG video data. The performance evaluations showed a major improvement in bandwidth utilisation as compared to other proposed schemes.