Abstract:
The concept of heterogeneous networks has attracted a lot of interest recently
as a way to improve the performance of the network. The heterogeneous
networks approach consists of complementing the Macro layer with low power
nodes such as Micro or Pico base stations. In LTE-A hetnet , pico-eNBs
are deployed to adequately offload traffic from macro layer and bring users
closer to the base station to enhance the cell edge user experience. However,
macro-eNB causes strong interference to pico cell edge users due to its higher
transmission power. Hence, inter-cell interference is the biggest challenge in
LTE-A HetNets. The intercell interference management is a critical point to
improve the performance of the cellular mobile networks. This thesis aims to
mitigate intercell interference in the downlink LTE-A HetNets.
Enhanced Inter-Cell Interference Coordination (eICIC) schemes have been
proposed to mitgate the heavy interference in the Range Extension case ranging
from time domain schemes like Almost Blank Subframes (ABS).enhanced
This thesis is an in-depth analysis of inter-cell interference in LTE-Advanced
HetNets and explores various solutions proposed in the literature to reduce
interference. It presents a pioneering tactic based on the blend of eICIC (enhanced
Inter-Cell Interference Coordination) and smart antennas to further
reduce the macro interference.
The simulations for downlink co-channel deployment of macro-eNB (evolved
Node B) and pico-eNB, demonstrates overall network performance gain and
improved QoS (Quality of Service) for the pico cell edge users’ achieved using
the proposed scheme.
