A Study of End-to-End Video Robust Transmission Via WMN

The video transmission over the multi-path fading wireless channel has to overcome the inherent vulnerability of compressed video to the channel errors. To effectively prevent the corruption of video stream and error propagation in spatial and temporal domain, proactive error controls are widely been deployed. In this paper, a novel video transmission architecture via WMNs is proposed to meet the error robust requirement of wireless video transmission. This architecture address a strategy of jointing sources coding and channel coding based on H.264 video code standard. 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 mesh network. Second, we estimate the time-varying wireless network condition dynamically through estimate of throughout and RTT. Third, because H.264 is the most popular video coding standard for video communication, we use it as an experiment platform. A data partition scheme is also used to enhance error resilience performance. By Integrated strategies, we can improve the end-to-end quality of services. The simulation results show our strategies can significantly improve the robustness of wireless video transmission.