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Quality of Experience Optimized Scheduling in Multi-Service Wireless Mesh Networks
Institute of Telecommunications, University of Aveiro, Portugal.
EPFL, Switzerland;.
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.
*Institute of Telecommunications, University of Aveiro, Portugal.
2010 (English)In: Proceedings of International Conference on Image Processing (ICIP) 2010, IEEE conference proceedings, 2010, 3233-3236 p.Conference paper, (Refereed)
Abstract [en]

A growing trend has emerged in network architecture research to switch focus from Quality of Service (QoS) to Quality of Experience (QoE) optimization. In this paper, we first present QoE models that characterize user satisfaction of video, audio, and data services over wireless networks. We then develop a novel packet scheduling algorithm for multi-hop wireless networks that jointly optimizes the delivery of multiple video, audio, and data flows according to the QoE metrics. We formulate a multidimensional optimization problem that minimizes the overall distortion across all flows for the given network resources on wireless links. Fairness constraints over the flows are also considered as part of the optimization. Our experimental results, obtained with the NS-2 IEEE 802.16 MESH-mode simulator, show that distortion-aware scheduling can significantly increase the perceived quality of different wireless services under bandwidth constraints. Additionally, improved fairness across the competing flows is demonstrated relative to conventional scheduling techniques.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2010. 3233-3236 p.
National Category
Computer Science
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-9904ISBN: 978-1-4244-7994-8 (print)OAI: oai:DiVA.org:kau-9904DiVA: diva2:493414
Conference
International Conference on Image Processing (ICIP) 2010, September 26-29, 2010, Hongkong, China
Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2013-09-18Bibliographically approved

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