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[email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. IEEE TRANSACTIONS ON MOBILE COMPUTING, VOL. X, NO. X, JUNE 2012 1 Estimating Performance of Mobile Services from Comparative Output-Input Analysis of End-to-End Throughput Markus Fiedler, Member, IEEE, Katarzyna Wac, Member, IEEE, Richard Bults, and Patrik Arlos, Member, IEEE Abstract—Mobile devices with ever-increasing functionality and the ubiquitous availability of wireless communication networks are driving forces behind innovative mobile applications enriching our daily life. One of the performance measures for a successful application deployment is the ability to support application-data flows by heterogeneous networks within certain delay boundaries. However, the quantitative impact of this measure is unknown and practically infeasible to determine at real-time due to the mobile device resource constraints. We research practical methods for measurement-based performance evaluation of heterogeneous data communication networks that support mobile application-data flows.