The design of video streaming proxy in high-speed train

This paper considers the characteristic of high-speed train about precise timing information, such as arrival time, depending duration on station, traveling time and current location of train, to design a video proxy agent for VoD service in train. Based on the information of current active video flows, a burst prefetching scheme is developed when the high-speed train depends on station. The video data required by the passengers in near future is burst downloaded to the train proxy to release the bandwidth constrain in train traveling. The most of playback video data can be provided by the train proxy during the train moving. The proposed scheme increases the system performance and video playback quality. The simulation results reveal that the proposed scheme has better performance in term of byte hit rate and amount of missed deadline streams compared with other schemes.