Design of video streaming service quality control system using available bandwidth information

In this paper, we propose video quality control system (VQCS) which tan control video service quality through the monitoring of end-to-end available bandwidth for video streaming service like IPTV in NGN convergence network. Various multimedia services such as video, voice and gaming service can be provided by IPTV, and these services require large amounts of bandwidth. At this time, video quality degradation like video jerkiness, block distortion and blurring is caused when network available bandwidth is insufficient. We configure test network to verify justification of the proposed model, and measure video quality using MSU video quality´ measurement tool. We choose SSIM (structural similarity) score to accurately measure video quality because SSI M is quite similar to MOS (Mean Opinion Score). Since SSIM method can derive experienced video quality through measurement of similarity between original still images and tested still images, we can predict satisfaction of video quality passed through the experimental network using SSIM score.