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Distortion Optimized Multi-Service Scheduling for Next-Generation Wireless Mesh Networks
Institute of Telecommunications, University of Aveiro, Portugal.
Swiss Federal Institute of Technology (EPFL), Lausanne, 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.ORCID iD: 0000-0002-9446-8143
Institute of Telecommunications, University of Aveiro, Portugal.
2010 (English)In: : INFOCOM IEEE Conference on Computer Communications Workshops , 2010, IEEE Press, 2010Conference paper, Published paper (Refereed)
Abstract [en]

Distributing multimedia content over wireless networks is challenging due to the limited resource availability and the unpredictability of wireless links. As more and more users demand wireless access to (real-time) multimedia services, the impact of constrained resources is different for different media types. Therefore, understanding this impact and developing mechanisms to optimize content delivery under resource constraints according to user perception will be key in improving user satisfaction. In this paper, we develop a novel scheduling algorithm for multi-hop wireless networks, which optimizes packet delivery for multiple audio, video and data flows according to user perceivable quality metrics. We formulate a multidimensional optimization problem to minimize the overall distortion while satisfying resource constraints for the wireless links. Our Quality-of-Experience (QoE)-optimized scheduler makes use of models to determine the user's perception of quality that are specific to the type of service being provided. 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 multimedia streaming under bandwidth constraints. As the scheduler allows the modeling of fairness constraints among multiple competing flows, we also demonstrate an improvement in fairness across different flows.

Place, publisher, year, edition, pages
IEEE Press, 2010.
Series
INFOCOM IEEE Conference on Computer Communications Workshops, 2010
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-9728DOI: 10.1109/INFCOMW.2010.5466675ISBN: 978-1-4244-6739-6 (print)OAI: oai:DiVA.org:kau-9728DiVA, id: diva2:493231
Conference
2nd Workshop on Carrier Grade Wireless Mesh Networks (CARMEN 2010), collocated with Infocom 2010, March 19, San Diego, USA.
Note

Proceedings are part of Infocom 2011 Proceedings.

Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2018-01-12Bibliographically approved

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CiteExportLink to record
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Citation style
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