Adjustable Interleaving Staircase-Harmonic Broadcasting Scheme for Highly-Demanded Videos

With the growth of broadband networks, Video-on-Demand (VoD) has become realistic. Many significant broadcasting schemes have been proposed to reduce the viewers’ waiting time. However, clients are required to receive video segments altogether from all channels. This disregard not only needs a lot of client bandwidth, but also incurs more buffer requirements. To escape from these constraints, this work proposes the adjustable interleaving staircase-harmonic broadcasting scheme (AISHB), which offers a tradeoff between any two of three resources: server bandwidth, client buffer spaces, and client bandwidth. When client bandwidth is not limited, the scheme requires a client to buffer only 25% of a playing video and the waiting time is slightly higher than the optimal waiting time. In comparison with the fast broadcasting, recursive frequency-splitting, and harmonic broadcasting, AISHB saves the buffer requirements by 50%, 33%, and 33%. If client bandwidth is restricted, AISHB achieves the smallest waiting time among all currently known broadcasting schemes.