SAP: Stall-aware pacing for improved DASH video experience in cellular networks

dc.contributor.authorZahran, Ahmed H.
dc.contributor.authorQuinlan, Jason J.
dc.contributor.authorRamakrishnan, K. K.
dc.contributor.authorSreenan, Cormac J.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderNational Science Foundationen
dc.date.accessioned2017-10-20T11:52:25Z
dc.date.available2017-10-20T11:52:25Z
dc.date.issued2017-06
dc.description.abstractThe dramatic growth of cellular video traffic represents a practical challenge for cellular network operators in providing a consistent streaming Quality of Experience (QoE) to their users. Satisfying this objective has so-far proved elusive, due to the inherent system complexities that degrade streaming performance, such as variability in both video bitrate and network conditions. In this paper, we present SAP as a DASH video traffic management solution that reduces playback stalls and seeks to maintain a consistent QoE for cellular users, even those with diverse channel conditions. SAP achieves this by leveraging both network and client state information to optimize the pacing of individual video flows. We extensively evaluate SAP performance using real video content and clients, operating over a simulated LTE network. We implement state-of-the-art client adaptation and traffic management strategies for direct comparison. Our results, using a heavily loaded base station, show that SAP reduces the number of stalls and the average stall duration per session by up to 95%. Additionally, SAP ensures that clients with good channel conditions do not dominate available wireless resources, evidenced by a reduction of up to 40% in the standard deviation of the QoE metric.en
dc.description.sponsorshipNational Science Foundation (NSF grant CNS-1619441)en
dc.description.statusPeer revieweden
dc.description.urihttp://mmsys17.iis.sinica.edu.tw/en
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZahran, A. H., Quinlan, J. J., Ramakrishnan, K. K. and Sreenan, C. J. (2017) 'SAP: Stall-Aware Pacing for Improved DASH Video Experience in Cellular Networks', MMSys'17 Proceedings of the 8th ACM on Multimedia Systems Conference, 20-23 June. Taipei, Taiwan. 3083199: ACM, pp. 13-26. isbn: 978-1-4503-5002-0/17/06en
dc.identifier.doi10.1145/3083187.3083199
dc.identifier.endpage26en
dc.identifier.isbn978-1-4503-5002-0/17/06
dc.identifier.journaltitleMMSys'17 Proceedings of the 8th ACM on Multimedia Systems Conferenceen
dc.identifier.startpage13en
dc.identifier.urihttps://hdl.handle.net/10468/4924
dc.language.isoenen
dc.publisherAssociation for Computing Machinery (ACM)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/13/IA/1892/IE/An Internet Infrastructure for Video Streaming Optimisation (iVID)/en
dc.rights© Owner/Author | ACM 2017. This is the author's version of the work. It is posted here for your personal use. Not for redistribution. The definitive Version of Record was published in MMSys'17 Proceedings of the 8th ACM on Multimedia Systems Conference, http://dx.doi.org/10.1145/3083187.3083199en
dc.subjectAdaptive bitrate video streamingen
dc.subjectDASHen
dc.subjectQoEen
dc.subjectSeparable programmingen
dc.titleSAP: Stall-aware pacing for improved DASH video experience in cellular networksen
dc.typeArticle (peer-reviewed)en
dc.typeConference item
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