Adaptive Live Broadcasting for Highly-Demand Videos

With the growth of broadband networks, Video-on-Demand (VoD) has become realistic. Many significant broadcasting schemes have been proposed to reduce the bandwidth requirements for stored popular videos, but they cannot be used to support live video broadcast perfectly. Herein, we propose a new broadcasting scheme, called the Adaptive Live Broadcasting (ALB) scheme, which supports live video broadcasting and performs well over a wide range of request arrival rates. From our analysis and comparison, we find that our ALB scheme is suitable for broadcasting live video. It has several significant advantages: (1) It has the shortest maximum waiting time with fixed channels. (2) It has the lowest maximum I/O transfer requirements with a fixed maximum waiting time at the client end. A simulation is employed to evaluate several live broadcasting schemes: UD, ST, AFB and ALB. The results reveal that our ALB scheme consumes the least server bandwidth.