A dynamic hybrid UXP/ARQ method for scalable video transmission

In this paper, we analyze the conventional unequal erasure protection (UXP) scheme for scalable video transmission, and propose a dynamic hybrid UXP/ARQ transmission framework to improve the performance of the conventional UXP method for bandwidth-constrained scalable video transmission. This framework applies automatic retransmission request (ARQ) to the conventional UXP scheme for scalable video transmission, and dynamically adjusts the transmission time budget of each group of picture (GOP) according to the feedback about the transmission results of the current and previous GOPs from the receiver. Besides, target video quality is introduced and optimized to adapt to the channel condition in pursuit of more efficient dynamic time allocation. Simulation results show that compared with the conventional UXP scheme, the average peak signal to noise ratio (PSNR) of the reconstructed video can be improved significantly in a wide range of packet loss rate.