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You are here: Home Events Dr Kimon Kontovasilis from National Centre of Scientific Research (Demokritos), Greece Performance, Dimensioning and Interference Tradeoffs for Two-tier Wireless Networks

Dr Kimon Kontovasilis from National Centre of Scientific Research (Demokritos), Greece Performance, Dimensioning and Interference Tradeoffs for Two-tier Wireless Networks

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What
  • Colloquium Series
When Oct 04, 2013
from 11:30 AM to 12:30 PM
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The talk will address a two-tier wireless network structure, where the edge of a Macrocell is underlaid by a number of uniformly deployed femtocells, and will discuss the impact of interference to flow-level performance. It will be shown that a careful examination of the factors associated with interference and the use of appropriate modeling techniques from the theory of Processor Sharing systems can give rise to a simple methodology for determining the values of important flow-level performance metrics.

Two forms of interference will be taken into account: cross-tier interference from the Macrocell to femtocells and co-tier interference between neighboring femtocells. The model to be discussed is capable of capturing the combined impact of both these types.

The presentation will discuss numerical results that illustrate various tradeoffs between system parameters. Among other findings, these results indicate that in scenarios where the potential for cross-tier interference is more pronounced, increasing the number of femtocells above some threshold leads to performance degradation.

Brief bio:

Kimon Kontovasilis received the Diploma in Electrical Engineering from the National Technical University of Athens (NTUA) in 1987, the M.Sc. in Computer Science from the North Carolina State University in 1990 and the Ph.D. in Electrical Engineering from NTUA in 1993. Since 1996 he is with the Institute of Informatics and Telecommunications of the National Center for Scientific Research “Demokritos” as a member of the research staff, currently ranking as Research Director and serving as the head of the Networks Laboratory.

His research interests span several areas of networking, including: modeling, performance evaluation, and resource management of wired and wireless networks, management and optimization of heterogeneous jointly operated wireless networks, distributed and autonomic architectures for network management systems, vehicular and delay-tolerant networks and energy efficient networks.

He has taken part in a considerable number of competitively funded research projects at a national and international scale (in many cases with a leading/organizational role). Also, he has been involved in the organising or technical program committees of numerous international conferences in the field of networking. Kimon is a member of the IFIP Working Group 6.3 (Performance of Computer and Communications Systems) and of the Technical Chamber of Greece.


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