期刊
IEEE TRANSACTIONS ON MOBILE COMPUTING
卷 18, 期 7, 页码 1647-1660出版社
IEEE COMPUTER SOC
DOI: 10.1109/TMC.2018.2863234
关键词
DASH; adaptive video streaming; lyapunov optimization; smartphone; LTE/Wi-Fi networks
资金
- Institute for Information & communications Technology Promotion (IITP) - Korea government (MSIT) [2015-0-00300]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [2015-0-00300-004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Exploiting both LTE and Wi-Fi links simultaneously enhances the performance of video streaming services in a smartphone. However, it is challenging to achieve seamless and high quality video while saving battery energy and LTE data usage to prolong the usage time of a smartphone. In this paper, we propose REQUEST a video chunk request policy for Dynamic Adaptive Streaming over HTTP (DASH) in a smartphone, which can utilize both LTE and Wi-Fi. REQUEST enables seamless DASH video streaming with near optimal video quality under given budgets of battery energy and LTE data usage. Through extensive simulation and measurement in a real environment, we demonstrate that REQUEST significantly outperforms other existing schemes in terms of average video bitrate, rebuffering, and resource waste.
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