Home Search AA
Published: 2013-11-24 at 18:32
Colloquium "A Model of...

The 32nd colloquium under the auspices of the ACROSS project was held by dr. sc. Ognjen Dobrijević

Colloquium details
Title A Model of QoE-driven Path Optimization for Multimedia Services
Speaker dr. sc. Ognjen Dobrijević
Date 18. 10. 2013. 14:15 - 15:00
Location Faculty of Electrical Engineering and Computing, TCR

More about the speaker and colloquium can be found in the detailed colloquium content.

Going beyond quality of service concepts which are more technology- and network-oriented, quality of experience (QoE) describes the overall service performance from the end-user standpoint and considers a wider set of influence factors than network parameters. In order to enhance the current management of operational networks, a new direction in networking research relates to exploring QoE-based management and control decisions which are more "user-centric". This talk first presented main motivation behind the proposed approach of QoE-driven path optimization for multimedia services. The approach deals with assigning media flows of multiple communication sessions to the most suitable network paths, so as to maximize the sum of QoE for all users. As such a problem may be formulated and solved with the means of network optimization, fundamental principles of the network flows optimization will be briefly described. The talk then focused on modeling and a mathematical formulation of the path assignment problem, which also included presentation of general design guidelines. In addition, a software implementation of the optimization model was outlined, along with how the associated problem was solved. In the end, an initial evaluation of the optimization model and remarks regarding future work were described.


Ognjen Dobrijevic is a research associate - senior assistant at the University of Zagreb, Faculty of Electrical Engineering and Computing, Croatia. He received his Dipl.-Ing., M.Sc., and Ph.D. degrees in Electrical Engineering from the University of Zagreb in 2004, 2007 and 2011, respectively. His main research interests are related to networking aspects of quality and mobility support for multimedia services in converged IP networks and Future Internet.

Mario Bukal
News list

ACROSS project has received research funding from the Seventh Framework Programme of the European Union (Grant Agreement No. 285939 FP7-REGPOT-2011-1).


Equipment promotion video

ACROSS brochure is available here.