Generalized Clustering Interference Coordination Algorithm in Ultra-Dense Femto cells in LTE Advanced Heterogeneous Networks Based on Power Control

Abstract

In this paper, we review the interference coordination strategies in the literature for the LTE-A HetNet system. Next, we propose an interference coordination scheme based on the mechanism of controlling the transmission power of a particular group of femtocells in the network by adopting the principle of Soft Fractional Frequency Reuse (SFFR) in the allocation of radio resources. In parallel, we define the concept of an Interference Cluster (IC) that has specific characteristics, where the femtocell whose power is intended to be controlled is located in the center of the Interference Cluster (IC) to achieve a main goal that is to reach the minimum level of interference of femtocells signals in the case of transmission over the downlink; thus, reducing the level of interference in the network. This implies raising the ratio of the power of the useful signal to the sum of the noise and interference ratio (SINR), and thus improving both network throughput and capacity. We compare the performance of the proposed algorithm with the traditional schemes and algorithms in the literature, and derive the simulation results using the MATLAB Platform.