Cross-tier interference mitigation in a cellular system with small moving cells

In this paper, we consider the management of cross-tier interference in a HetNet cellular system employing small moving cells (SMCs). We manage the interference by using statistical channel information taking into consideration of SMC mobility. We represent the cross-tier interference channel in terms of dominant channel space and then determine the beam weight to minimize the effect of interference in the dominant channel space. Finally, the performance of the proposed scheme is verified by computer simulation.