Fresher content or smoother playback? A brownian-approximation framework for scheduling real-time wireless video streams

Ping-Chun Hsieh, Xi Liu, I. Hong Hou

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

This paper presents a Brownian-approximation framework to optimize the quality of experience (QoE) for real-time video streaming in wireless networks. In real-time video streaming, one major challenge is to tackle the natural tension between the two most critical QoE metrics: playback latency and video interruption. To study this trade-off, we first propose an analytical model that precisely captures all aspects of the playback process of a real-time video stream, including playback latency, video interruptions, and packet dropping. Built on this model, we show that the playback process of a real-time video can be approximated by a two-sided reflected Brownian motion. Through such Brownian approximation, we are able to study the fundamental limits of the two QoE metrics and characterize a necessary and sufficient condition for a set of QoE performance requirements to be feasible. We propose a scheduling policy that satisfies any feasible set of QoE performance requirements and then obtain simple rules on the trade-off between playback latency and the video interrupt rates, in both heavy-traffic and under-loaded regimes. Finally, simulation results verify the accuracy of the proposed approximation and show that the proposed policy outperforms other popular baseline policies.

原文English
主出版物標題MobiHoc 2020 - Proceedings of the 2020 International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing
發行者Association for Computing Machinery
頁面41-50
頁數10
ISBN(電子)9781450380157
DOIs
出版狀態Published - 11 10月 2020
事件21st ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2020 - Virtual, Online, United States
持續時間: 11 10月 202014 10月 2020

出版系列

名字Proceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)

Conference

Conference21st ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2020
國家/地區United States
城市Virtual, Online
期間11/10/2014/10/20

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