Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=100#.VNsSqSzQrzE Author(s) Tanir Ozcelebi , Igor Radovanovic , Debraj Sengupta Affiliation(s) Eindhoven University of Technology, PO Box 213, 5600 MB, Eindhoven, The Netherlands . Eindhoven University of Technology, PO Box 213, 5600 MB, Eindhoven, The Netherlands . ICT Embedded BV. PO Box 6420, 5600 HK, Eindhoven, The Netherlands . ABSTRACT IP Multimedia Subsystem (IMS) allows the use of unlicensed, non-dedicated and nondeterministic access networks for delivering IP multimedia services. Providing end-to-end Quality-of-Service (QoS) for resource demanding real-time services (e.g. real-time multimedia) over such networks is a challenging task due to varying resource availability of the network and the end-device during a single session . A common solution to this problem is adapting service quality and type according to availability of system resources...
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