ERROR-RESILIENT WIRELESS VIDEO TRANSMISSION USING MOTION-BASED UNEQUAL ERROR PROTECTION AND INTRA-FRAME PACKET INTERLEAVING (MP-P2)

Author(s) : Qi Qu (Electrical and Computer Engineering Dept., Univ. of California San Diego, USA) Yong Pei (Computer Science and Engineering Dept., Wright State Univ., USA) James W. Modestino (Electrical and Computer Engineering Dept., Univ. of Miami, USA) Xusheng Tian (Electrical and Computer Engineering Dept., Univ. of Miami, USA)

Abstract : Packet video transmission over wireless networks is expected to experience packet losses due to noise, interference, multipath and the motion of mobile hosts. Such packet losses often occur in bursts which may cause substantial degradation to the transmitted video quality. In this paper, we propose the use of a cross-layer unequal error protection (UEP) approach which is achieved by assigning an unequal amount of forward error correction (FEC) to each group of link-layer packets according to the corresponding motion level of the slice acquired at the application layer. Also, a novel packetization scheme and an intra-frame packet interleaving scheme are proposed to be used together with FEC/UEP in order to combat the bursty packet losses in 3G wireless environments. Our results demonstrate that the proposed approach is very effective in dealing with the packet losses occurring on wireless networks without incurring any additional implementation complexity or delay.

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