Generalized conservative staircase data broadcasting protocol for video-on-demand

The staircase broadcasting scheme has optimal performance for the buffer storage and the disk transfer rate. However, this scheme sometime fails to provide the video data to the users in time. This limitation has been overcome in the conservative staircase scheme developed recently. In this scheme, the video segments are downloaded and stored at the client´s site in their entirety before they are required for viewing. It does overcome the non-delivery of the video data to the users in time, but at the cost of extra resources. In this paper, we propose a new scheme named as generalized conservative staircase scheme, which requires less amount of resources and does not suffer from the problem of non-delivery of video data. The proposed scheme requires less amount of bandwidth by downloading the video data at slower rate. Thus this scheme has better performance for the viewer´s waiting time and requires less amount of buffer storage and the disk transfer rate as compared to the conservative staircase scheme.