Title :
Optimal packetisation of MPEG-4 using RTP over mobile networks
Author :
Worrall, S.T. ; Sadka, A.H. ; Sweeney, P. ; Kondoz, A.M.
Author_Institution :
Centre for Commun. Syst. Res., Surrey Univ., Guildford, UK
fDate :
8/1/2001 12:00:00 AM
Abstract :
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
Keywords :
cellular radio; data encapsulation; packet radio networks; transport protocols; visual communication; GPRS; General Packet Radio Service; MPEG-4; RTP; adaptive system; channel utilisation; data encapsulation; error robustness; mobile networks; motion adaptive system; optimal packetisation; packetisation; real-time mobile video communications; real-time transport protocol; third-generation wireless networks; video packet sizes;
Journal_Title :
Communications, IEE Proceedings-
DOI :
10.1049/ip-com:20010398
