UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Mind the gap: modelling video delivery under expected periods of disconnection.

Tasiopoulos, AG; Psaras, I; Pavlou, G; (2014) Mind the gap: modelling video delivery under expected periods of disconnection. In: Gerla, M and Passarella, A, (eds.) CHANTS '14: Proceedings of the 9th ACM MobiCom Workshop on Challenged Networks. (pp. pp. 13-18). ACM: New York, USA. Green open access

[img]
Preview
Text
Tasiopoulos_mind_the_gap_modelling_video.pdf

Download (175kB) | Preview

Abstract

In this work we model video delivery under expected periods of disconnection, such as the ones experienced in public transportation systems. Our main goal is to quantify the gains of users' collaboration in terms of Quality of Experience (QoE) in the context of intermittently available and bandwidth-limited WiFi connectivity. Under the assumption that Wi-Fi connectivity is available within underground stations, but absent between them, at first, we define a mathematical model which describes the content distribution under these conditions and we present the users' QoE function in terms of undisrupted video playback. Next, we expand this model to include the case of collaboration between users for content sharing in a peer-to-peer (P2P) way. Lastly, we evaluate our model based on real data from the London Underground network, where we investigate the feasibility of content distribution, only to find that collaboration between users increases significantly their QoE.

Type: Proceedings paper
Title: Mind the gap: modelling video delivery under expected periods of disconnection.
Event: CHANTS '14: 9th ACM MobiCom Workshop on Challenged Networks, 7 September 2014, Hawaii, USA
ISBN-13: 9781450330718
Open access status: An open access version is available from UCL Discovery
DOI: 10.1145/2645672.2645680
Publisher version: http://dx.doi.org/10.1145/2645672.2645680
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.
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: http://discovery.ucl.ac.uk/id/eprint/1502964
Downloads since deposit
8Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item