EQ-Video: Energy and Quota-aware Video Playback Time Maximization for Smartphones

In order to maximize video playback time of smartphones, both data usage and energy consumption need to be considered simultaneously because users may stop playing the video when either available data quota or battery energy is about to deplete. In this letter, we propose an algorithm determining an optimal operating parameter to selectively save more depleting resource. For this purpose, we numerically analyze how HTTP-based video services affect the data usage and energy consumption. Then, we show that the proposed scheme effectively extends the playback time compared with other schemes that only consider either data usage or energy consumption.