Low delay, error resilient error control for mobile video communication

This paper proposes a low delay, error resilient video transmission scheme for mobile radio channels. Compressed video data is sensitive to channel error. Channel error can fatally degraded the reconstructed video sequence by causing intra-frame and inter-frame error propagation. Using ARQ to prevent all forms of error propagation, significantly increases the transmission delay of the video frame. We propose a new error control scheme; additional information is transmitted to prevent intra-frame error propagation and ARQ is used to prevent interframe error propagation. Moreover, macro blocks that detected channel error are replaced by previous blocks. Simulation results show that the proposed scheme can prevent the long delay caused by retransmission control and effectively minimize error propagation.