On-demand video-streaming quality of experience maximization in mobile edge computing

Ayman Younis, Tuyen X. Tran, Dario Pompili

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Mobile Edge Computing (MEC) has recently emerged as a promising paradigm to enhance mobile networks' performance by providing cloud-computing capabilities to the edge of the Radio Access Network (RAN) with the deployment of MEC servers right at the Base Stations (BSs). Meanwhile, in-network caching and video transcoding have become important complementary technologies to lower network cost and to enhance Quality of Experience (QoE) for video-streaming users. In this paper, we aim at optimizing the QoE for dynamic adaptive video streaming by taking into account the Distortion Rate (DR) characteristics of videos and the coordination among MEC servers. Specifically, a novel Video-streaming QoE Maximization (VQM) problem is cast as a Mixed-Integer Nonlinear Program (MINLP) that jointly determines the integer video resolution levels and video transmission data rates. Due to the challenging combinatorial and non-convex nature of this problem, the Dual-Decomposition Method (DDM) is employed to decouple the original problem into two tractable subproblems, which can be solved efficiently using standard optimization solvers. Realtime experiments on a wireless video streaming testbed have been performed on a FDD-downlink LTE emulation system to characterize the performance and computing resource consumption of the MEC server under various realistic conditions. Emulation results of the proposed strategy show significant improvement in terms of users' QoE over traditional approaches.

Original languageEnglish (US)
Title of host publication20th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks, WoWMoM 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728102702
DOIs
StatePublished - Jun 2019
Event20th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks, WoWMoM 2019 - Washington, United States
Duration: Jun 10 2019Jun 12 2019

Publication series

Name20th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks, WoWMoM 2019

Conference

Conference20th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks, WoWMoM 2019
CountryUnited States
CityWashington
Period6/10/196/12/19

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Media Technology

Keywords

  • Adaptive bitrate streaming
  • Joint caching and processing
  • Mobile-edge computing
  • Video QoE

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