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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Impact of playout buffer dynamics on the QoE of wireless adaptive HTTP progressive video

  • Xie, Guannan (College of Information Science and Electronic Engineering, Zhejiang University) ;
  • Chen, Huifang (College of Information Science and Electronic Engineering, Zhejiang University) ;
  • Yu, Fange (College of Information Science and Electronic Engineering, Zhejiang University) ;
  • Xie, Lei (College of Information Science and Electronic Engineering, Zhejiang University)
  • Received : 2020.04.28
  • Accepted : 2020.11.25
  • Published : 2021.06.01
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Abstract

The quality of experience (QoE) of video streaming is degraded by playback interruptions, which can be mitigated by the playout buffers of end users. To analyze the impact of playout buffer dynamics on the QoE of wireless adaptive hypertext transfer protocol (HTTP) progressive video, we model the playout buffer as a G/D/1 queue with an arbitrary packet arrival rate and deterministic service time. Because all video packets within a block must be available in the playout buffer before that block is decoded, playback interruption can occur even when the playout buffer is non-empty. We analyze the queue length evolution of the playout buffer using diffusion approximation. Closed-form expressions for user-perceived video quality are derived in terms of the buffering delay, playback duration, and interruption probability for an infinite buffer size, the packet loss probability and re-buffering probability for a finite buffer size. Simulation results verify our theoretical analysis and reveal that the impact of playout buffer dynamics on QoE is content dependent, which can contribute to the design of QoE-driven wireless adaptive HTTP progressive video management.

Keywords

Acknowledgement

This research was supported by the Ministry of Industry and Information Technology of China (No. 2012ZX03001035-004), and the Science and Technology Department of Zhejiang Province (No. 2016C31060, No. 2018R52046).

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