Incorporating Prediction into Adaptive Streaming Algorithms
Darijo Raca, Ahmed H. Zahran, Cormac J. Sreenan, Rakesh Kumar Sinha, Emir Halepovic, Rittwik Jana, Vijay Gopalakrishnan, Balagangadhar G. Bathula, Matteo Varvello · 2018
Streaming over the wireless channel is challenging due to rapid fluctuations in available throughput. Encouraged by recent advances in cellular throughput prediction based on radio link metrics, we examine the impact on Quality of Experience (QoE) when using prediction within existing algorithms based on the DASH standard. By design, DASH algorithms estimate available throughput at the application level from chunk rates and then apply some averaging function. We investigate alternatives for modifying these algorithms, by providing the algorithms direct predictions in place of estimates or feeding predictions in place of measurement samples. In addition, we explore different prediction horizons going from one to three chunk durations. Furthermore, we induce different levels of error to ideal prediction values to analyse deterioration in user QoE as a function of average error.