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Amir Mehmood's Publications

Utility-based analytical model for representing user QoE
Citation key KLM-UBAMRUQOE-11
Author Khan, Manzoor Ahmed and Lu, Jie and Mehmood, Amir
Title of Book 9th IFIP TC 6 International Conference on Wired/Wireless Internet Communications (WWIC '11)
Pages 323–337
Year 2011
ISBN 978-3-642-21559-9
ISSN 0302-9743
Online ISSN 1611-3349
DOI http://dx.doi.org/10.1007/978-3-642-21560-5_27
Location Vilanova i la Geltrú, Spain
Address Berlin / Heidelberg, Germany
Volume 6649
Month June
Publisher Springer
Series Lecture Notes in Computer Science (LNCS)
Organization IFIP
Abstract Next Generation Mobile Networks (NGMNs) together with smart phones evolution have opened new opportunities to deliver mobile services, including voice, data and multimedia applications to the users. However this conflation has brought several challenges in terms of Quality of Experience - QoE of users. Mainly due to degradations with time-varying characteristics in the presense of link heterogeneity, varying packet loss and codec switching. In this paper we propose an analytical quality prediction model which predicts user QoE for conditions that are typically occurring in NGNMs such as network handovers, codec switching and different packet loss rates due to adverse wireless networking conditions. We augment our model with service price as another key factor in QoE representation. We validate quality prediction of our model with subjective tests. Our results show that the quality prediction by our model has correlation of r = 0.923 with subjective ratings.
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