TIME CONSTRAINED BANDWIDTH SMOOTHING FOR INTERACTIVE VIDEO-ON-DEMAND SYSTEMS
Wu‐chi Feng · 2014
The use of a client-side buffer in the delivery of compressed prerecorded video can be an effective tool for removing the burstiness required of the underlying server and network by smoothing the bandwidth requirements for continuous delivery. Given a fixed-size smoothing buffer, several bandwidth smoothing algorithms have been introduced in the literature that are provably optimal under certain constraints, typically requiring large buffer residency times to realize their optimal properties. The large buffer residency times, however, make VCR functions harder to support. In this paper, we introduce the notion of time constrained bandwidth smoothing. Specifically, we introduce two new algorithms that, in addition to the size of the client side buffer, use a time constraint as a parameter in the bandwidth smoothing plan creation, making the plans more amenable to supporting VCR interactivity. Our results show that the buffer residency times can be reduced, while still allowing the bandwidth allocation to be smoothed for continuous video delivery. 1.