A Buffer-Based Adaptive Bitrate Approach in Wireless Networks With Iterative Correction

Jingling Liu, Zhuoran Liu, Jiawei Huang, Wenchao Jiang, Jianxin Wang

Abstract: Most providers of video streaming are interested in improving quality of user experience across various wireless network circumstances. Many buffer-based ABR algorithms have been proposed to adjust the bitrate according to the buffer occupancy at the client player. Though keeping the buffer occupancy stable, such ABR algorithms cannot provide satisfied responsiveness to bandwidth dynamics. To solve the problem, we propose an ABR algorithm BBA+ that iteratively corrects the mapping function between bitrate and buffer occupancy according to network throughput. The results show that BBA+ effectively improves the average bitrate and reduces the rebuffering ratio.