Packet Coding Schemes For Mpeg Video Over Internet And Wireless Networks

Packet video will become a significant portion in emerging and future wireless/Internet traffics. However, network congestion and wireless channel error yields tremendous packet loss and degraded video quality. In this paper, we propose a new protocol stack design, which utilizes channel error information obtained from physical and link layer to assist the packet level error recovery. The proposed scheme is applied to MPEG coded video and tested using various packet loss and wireless channel profiles. The video quality can be substantially improved by using the channel error information at upper protocol stack such as UDP and application layer.