Network Utility Maximization in Wireless Multimedia Networks
Associate Director of the Network Management and Optimal Design Laboratory at the National Technical University of Athens
The demand for high data rates and support of multiple services with various quality of service requirements has enjoyed exponential growth worldwide for decades, and looks to continue unabated into the foreseeable future. To meet these demands, next generation wireless networks must support a significant increase in capacity, greater spectral efficiency and decreased energy consumption. To that end, Network Utility Maximization (NUM) theory has been widely explored and established in modeling and studying resource allocation problems in next generation (4G/5G) wireless networks. In this talk we will exploit the use of NUM theory towards the formulation of several resource allocation problems under different advanced wireless networking settings (i.e. wireless and multihop networks), environments or access technologies and considering various resources (e.g. power, rate, etc.). We will first present the combined outcome of using network utility functions and game theory considering resource allocation problems in next generation infrastructure based wireless networks. The latter approach is very well aligned with the current efforts for the realization of user’s self-optimization functionalities, envisioned by 3GPP LTE and LTE Advanced efforts and specifications. Then we will also introduce the NUM problem formulation and solution for wireless multihop networks towards the creation of an optimal cross-layer framework for the network operation including algorithmic design for routing, scheduling and congestion control, while considering several Quality of Service characteristics (e.g. delay, throughput, trust). Finally, the use of social network analysis based information in the design of the utility function is investigated, towards targeting at more efficient resources’ distribution among users according to their needs.
Prof. Symeon Papavassiliou received the diploma in electrical engineering from the National Technical University of Athens, Greece, in 1990 and the MSc and PhD degrees in electrical engineering from Polytechnic University, Brooklyn, New York, in 1992 and 1995, respectively. Currently he is a professor in the School of Electrical and Computer Engineering at the National Technical University of Athens. From 1995 to 1999, he was a senior technical staff member at AT&T Laboratories, New Jersey. In August 1999 he joined the Electrical and Computer Engineering Department at the New Jersey Institute of Technology, USA, where he was an associate professor until 2004. From June 1996 till August 1999 he was also an adjunct professor at the Electrical Engineering Department of Polytechnic University, Brooklyn, NY.
Dr. Papavassiliou was the Director of the Broadband, Mobile and Wireless Networking Laboratory (2000-2004) at the New Jersey Institute of Technology, USA, a founding member and Associate Director of the New Jersey Center for Wireless Networking and Internet security (2002-2004, New Jersey, USA), and a member of the New Jersey Center for Multimedia Research (1999-2001) and of the New Jersey Center for Wireless Telecommunications (1999-2003). Since 2005 he is also Associate Director of the Network Management and Optimal Design Laboratory at the National Technical University of Athens.
He has an established record of publications in his field of expertise, with more than 200 technical journal and conference published papers. He received the Best Paper Award in IEEE INFOCOM’94, the AT&T Division Recognition and Achievement Award in 1997, the US National Science Foundation Career Award in 2003, the Best Paper Award in IEEE WCNC 2012, and the Excellence in Research Grant in Greece in 2012. Dr. Papavassiliou also served on the board of the Greek National Regulatory Authority on Telecommunications and Posts (2006– 2009).
His main research interests lie in the area of communication networks, with emphasis on the analysis, optimization and performance evaluation of mobile and distributed systems, wireless multimedia networks, complex systems and social networks. He has been Associate Editor for IEEE Transactions on Parallel and Distributed Systems (2010-2014) and Technical Editor for IEEE Wireless Communications Magazine (2011-2015).