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Talk by Georgios Kollias

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Georgios Kollias who is currently a PhD candidate at the Technical University of Catalonia (UPC) will present part of his work on Tuesday, March 7th , on the 9th floor (901 room) of the Evelpidon Str. building (graduate program building) of the Athens University of Economics and Business (AUEB).

Title: Self-Organized Solutions in Future Heterogeneous Cellular Networks

Abstract: The ever increasing demands of cellular users for seamless connectivity anytime and anywhere forced network operators to search for solutions that would increase their capacity, expand the coverage of their networks, improve the offered quality of theirs services and simultaneously ensure high profits for them. The answer is the large scale deployment of low power nodes (i.e small cells), that can offer high rates in limited areas and therefore boost networks' capacity by covering areas with increased traffic, or areas with limited macro coverage. The result will be the transformation of traditional macro only networks to heterogeneous (HetNets) due to the existence of multiple tiers consisting of cells with different characteristics (e.g micro, pico, metro, femto, etc.).
The need for more efficient and flexible management of future HetNets as well as the necessity for continuous monitoring of the performance and optimization of their operation, is the reason for the integration of Self-Organized solutions under the Self-Organized Network (SON) concept. The aim of SONs is to replace the human factor with functions that will have the ability to handle dynamics, meaning variations in traffic or in network conditions, immediately.
Motivated by the aforementioned changes in cellular networks, the aim of this presentation is to propose novel schemes and algorithms under the SON umbrella and is divided in three parts: