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Optimal packetisation of MPEG-4 using RTP over mobile networks

2001; Institution of Engineering and Technology; Volume: 148; Issue: 4 Linguagem: Inglês

10.1049/ip-com

1359-7019

Stewart Worrall, Abdul Sadka, P. Sweeney, A. M. Kondoz,

Multimedia Communication and Technology

The introduction of third-generation wireless networks should result in real-time mobile video communications becoming a reality. Delivery of such video is likely to be facilitated by the real-time transport protocol (RTP). Careful packetisation of the video data is necessary to ensure the optimal trade-off between channel utilisation and error robustness. Theoretical analyses for two basic schemes of MPEG-4 data encapsulation within RTP packets are presented. Simulations over a GPRS (general packet radio service) network are used to validate the analysis of the most efficient scheme. Finally, a motion adaptive system for deriving MPEG-4 video packet sizes is presented. Further simulations demonstrate the benefits of the adaptive system.