Robust Wireless Video Transmission Strategies for Video Communications

In this paper, novel video transmission architecture is proposed to meet the error robust requirement of wireless video communications. This architecture uses user-defined protocol to provide efficient bandwidth access from wireless link. By taking the time-varying wireless channel condition and video codec characteristics into account, first, we present an end-to-end transport architecture for video streaming over wireless network. Second, we adopt channel of Bernoulli channel model from application layers of 3G networks. And we propose a dynamically estimate the time-varying wireless network condition through estimate of throughout, RTT and merit of packet delay time. Third, we use H.264 as an experiment platform. A data partition scheme is also used to enhance error resilience performance. This architecture is also suitable for various motion compensation based standards like H.261, H.263 series, MPEG-1, MPEG-2, MPEG-4. The simulation results show our strategies can significantly improve the robustness of wireless video transmission.