AFEC: An Advanced FEC Algorithm for Video Transmission Control over the Grid

Real-time video communication is very important to the Internet applications of video conferencing, video telephony, video-on-demand, and etc. However, the heavy traffic of video data along with its timing constraints makes it a challenge to provide large-scale, high QoS media streaming service over the current Grid environment. This paper presents a novel video transmission control algorithm AFEC (Advanced FEC), which is based on the FEC coding technology and the KALMAN filter theory. By modifying the rate using the adapted KALMAN filter, this algorithm efficiently solves the problem of rate fluctuation caused by the loss of the ACK packets. It also weakens the influence of the loss of elementary layer packets (or other important contents) in transmission and provides the continuity of the video transmission over Internet. Simulation results indicate that this algorithm can guarantee satisfied performance for video transmission in networks of high packet loss rates.