Method of preventing the perceptual video quality deterioration in streaming media distribution services based on the detection of deterioration sign

To support the high quality streaming media distribution services, it is important to detect a sign of perceptual video quality deterioration and to prevent the deterioration. This paper proposes the alternative routing method to prevent the deterioration of TCP base streaming flow over the fault route. First, this paper proposes to use the estimated number of packets stored for the reproduction in client PC as a sign of the deterioration for TCP based streaming media distribution, and to detect the fault route. Next, this paper proposes the method to automatically understand network topology and bandwidth usage by monitoring BGP (Border Gateway Protocol) routing protocol packets, and to prevent the deterioration of streaming flow over the fault route with alternative routing. The effectiveness of the proposed method is demonstrated by simulation.