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Faces in the clouds: long-duration, multi-user, cloud-assisted video conferencing

Clegg, R; Landa, R; Griffin, D; Rio, M; Hughes, P; Kegel, I; Stevens, T; ... Williams, D; + view all (2017) Faces in the clouds: long-duration, multi-user, cloud-assisted video conferencing. IEEE Transactions on Cloud Computing , PP (99) 10.1109/TCC.2017.2680440. Green open access

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Abstract

Multi-user video conferencing is a ubiquitous technology. Increasingly end-hosts in a conference are assisted by cloud-based servers that improve the quality of experience for end users. This paper evaluates the impact of strategies for placement of such servers on user experience and deployment cost. We consider scenarios based upon the Amazon EC2 infrastructure as well as future scenarios in which cloud instances can be located at a larger number of possible sites across the planet. We compare a number of possible strategies for choosing which cloud locations should host services and how traffic should route through them. Our study is driven by real data to create demand scenarios with realistic geographical user distributions and diurnal behaviour. We conclude that on the EC2 infrastructure a well chosen static selection of servers performs well but as more cloud locations are available a dynamic choice of servers becomes important.

Type: Article
Title: Faces in the clouds: long-duration, multi-user, cloud-assisted video conferencing
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TCC.2017.2680440
Publisher version: http://dx.doi.org/10.1109/TCC.2017.2680440
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Streaming media, overlay networks, video conferences
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1547782
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