Effective Use of Small Cells in Heterogeneous Radio Access Networks

In this talk we discuss some very simple Radio Access Network configurations comprising one macro cell and one or two small cells, the latter being strategically positioned to absorb the traffic peaks that occur in portions of the area covered by the macro cell. We study these configurations with simple models, and we examine the system performance for variable parameter values, showing that some of the emerging behaviors can be critical, but can provide insight for the small cell deployment. In particular, we show that when the handover rate out of the small cells toward the macro cell increases, the blocking probability in the macro cell also increases, quickly reaching unacceptable levels. This can be a problem, since high handover rates correspond to limited dimensions of the small cell with respect to the macro cell, which is what is normally expected, unless the small cell is deployed in an area of very slow end user mobility.

Short Bio

Marco Ajmone Marsan is a full professor at the Electronics and Telecommunications Department of the Politecnico di Torino in Italy, and a part-time research professor at IMDEA Networks Institute in Leganes, Spain.

Marco Ajmone Marsan obtained degrees in EE from the Politecnico di Torino in 1974 and the University of California, Los Angeles (UCLA) in 1978. He received a honorary doctoral degree in Telecommunication Networks from the Budapest University of Technology and Economics in 2002.

Since 1974 he has been at Politecnico di Torino, in the different roles of an academic career, with an interruption from 1987 to 1990, when he was a full professor at the Computer Science Department of the University of Milan.

Marco Ajmone Marsan has been doing research in the fields of digital transmission, distributed systems and networking. He has published over 350 papers in the leading conferences and journals of his research area. He is also coauthor of two books: Performance Models of Multiprocessor Systems (MIT Press, 1987) and Modelling with Generalized Stochastic Petri Nets (John Wiley, 1995).

Marco Ajmone Marsan has been a member of the editorial board and of the steering committee of the “ACM/IEEE Transactions on Networking”. He is a member of the editorial boards of the journals “Computer Networks” and “Performance Evaluation” of Elsevier, and of the “ACM Transactions on Modeling and Performance Evaluation of Computer Systems”. He served in the organizing committee of several leading networking conferences, and he was general chair of INFOCOM 2013.

Marco Ajmone Marsan is a Fellow of the IEEE, a member of the Academy of Sciences of Torino, and a member of Academia Europaea. He was qualified as “ISI highly cited researcher” in computer science.

Marco Ajmone Marsan was the Vice-Rector for Research, Innovation and Technology Transfer at the Politecnico di Torino from 2005 to 2009. From 2002 to 2009 he was the Director of the Istituto di Elettronica e Ingegneria dell’Informazione e delle Telecomunicazioni of the Italian National Research Council. He was the Italian delegate in the ICT and IDEAS committees of FP7.