Cross Layer ROHC Compression for Multicast Video Streaming

Recent years have seen significant growth in the use of IP based multimedia and streaming applications over wireless network links, which are characterized by low (or shared) capacity, appreciable delay and variable (sometimes high BER). This has motivated the development of innovative design techniques and protocols to increase the amount of bandwidth per user, improving perceived quality and using the available energy efficiently. This paper presents experimental quantitative and qualitative performance metrics using H.264 and ROHC for a multicast video streaming. The simulation results show that the proposed Cross-Layer ROHC compression outperforms IP/UDP/RTP and ROHC U-Mode strategies by offering the highest video quality and reducing both, the bandwidth usage and the average delay to start video reproduction.