MOS-Based Multiuser Multiapplication Cross-Layer Optimization for Mobile Multimedia Communication

Khan, Shoaib; Duhovnikov, Svetoslav; Steinbach, Eckehard; Kellerer, Wolfgang

doi:https://doi.org/10.1155/2007/94918

Advances in Multimedia

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Cross-layer Optimized Wireless Multimedia Communications

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Research Article | Open Access

Volume 2007 | Article ID 094918 | https://doi.org/10.1155/2007/94918

MOS-Based Multiuser Multiapplication Cross-Layer Optimization for Mobile Multimedia Communication

Shoaib Khan,¹Svetoslav Duhovnikov,¹Eckehard Steinbach,¹and Wolfgang Kellerer²

Academic Editor: Jianwei Huang

Received07 Jan 2007

Revised30 Apr 2007

Accepted05 Jun 2007

Published30 Jul 2007

Abstract

We propose a cross-layer optimization strategy that jointly optimizes the application layer, the data-link layer, and the physical layer of a wireless protocol stack using an application-oriented objective function. The cross-layer optimization framework provides efficient allocation of wireless network resources across multiple types of applications run by different users to maximize network resource usage and user perceived quality of service. We define a novel optimization scheme based on the mean opinion score (MOS) as the unifying metric over different application classes. Our experiments, applied to scenarios where users simultaneously run three types of applications, namely voice communication, streaming video and file download, confirm that MOS-based optimization leads to significant improvement in terms of user perceived quality when compared to conventional throughput-based optimization.

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Copyright

Copyright © 2007 Shoaib Khan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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