Cell Range Expansion and Time Partitioning for Enhanced Inter-cell Interference Coordination in Heterogeneous Network

In this paper, we propose a cell selection scheme and interference management scheme in Heterogeneous Network (HetNet). The cell selection scheme is based on the SINR, and the cell expansion range can vary through the offset value. We can manage the interference between the macro cell and Picocell, using ABS in the time domain. Also, a flexible ABS density is applied, to increase the spectrum efficiency. We show the simulation results of the selection scheme based on SINR with different offset values (6dB, 12dB) and the interference management scheme. Simulation results show that the proposed scheme can improve the user spectrum efficiency of the macro cell and Pico cell user. Eventually, the proposed scheme can improve overall user performance.