Video traffic prediction for improved scheduling in joint WiMAX/satellite networks

This paper improves the video prediction mechanism used for prediction of the uplink real-time traffic of an integrated satellite and WiMAX network. After a bibliographic search on mechanisms for video prediction in WiMAX and satellite networks, the NLMS (Normalized Least Mean Square) algorithm is chosen to be used as part of the existing mechanism, studying three possible alternatives that can be used. The first one proposes the implementation of the NLMS algorithm in the WiMAX BS (Base Station), the second one proposes the implementation of the NLMS algorithm in the satellite terminal, while the third one proposes the implementation of the NLMS algorithm in both the WiMAX BS and the satellite terminal. Simulation results show improved performance of all alternatives, while the best results are given by the second one which also has the lowest complexity in computations and memory. This alternative is finally presented and evaluated.