Uninterrupted staircase-staggered broadcasting method for simple and efficient video on demand

In designing video-on-demand (VoD) system, two major technical issues are focused on both to reduce the viewer's waiting time maintaining a given bandwidth allocation and the client's buffer requirements. In this paper, we propose a new uninterrupted staircase-staggered broadcasting [USSB] method which has a simple structure and substantially improved VoD efficiency. In addition, the USSB method offers an uninterrupted video display service. The numerical results demonstrate that the viewer's waiting time of the USSB method is nearly close to the existing staircase broadcasting method. The client only needs to buffer 20% of a playing video when the video dividing coefficient is 4. The maximum buffer requirements of this method can be intentionally controlled by adjusting the short front part of a video size. In this paper, the USSB method is introduced in detail and is analyzed with both analysis and simulation.