LTE/LTE-A Interference Coordination for Femtocells

Abstract: Femto-cells promise substantial gains in system spectral efficiency due to an enhanced reuse of radio resources. Femto-cells maintain an exclusive list of user equipments (UEs) that they serve. In this case, a foreign macro UE trapped inside a femto-cell experiences heavy interference from this femto-cell. The first part of this talk investigates the issue of femto-to-macro interference on the control channel. The control channel is very crucial because if it is incorrectly decoded, the following data region is ompletely lost. Certain interference-mitigating techniques are introduced. The second part of the talk goes even deeper and analyses the problem of interference on one of the crucial control channels. A novel and backward-compatible (for LTE Rel.-8/9 UEs) interference reducing technique is introduced and is shown to perform very well. Biography: Zubin Bharucha, born in Mumbai, India received his B.Sc. and M.Sc. degrees in Electrical Engineering and Computer Science from Jacobs University Bremen, Germany in 2005 and 2007, respectively. He then moved to Edinburgh to Scotland where he got his Ph.D. in Wireless Communications under the supervision of Dr. Harald Haas at the University of Edinburgh. The title of his thesis was "Ad hoc Wireless Networks with Femto-Cell Deployment: A Study". Since 2010, Zubin has worked as a researcher in the Wireless Research Group at DOCOMO Euro-Labs in Munich, Germany. He has been involved with 3GPP standardization as well as EU-funded research projects. His research interests cover the fields of ad hoc and cellular networks, interference alignment, resource management and energy-efficiency.