Soft frequency reuse based interference minimization technique for long term evolution-advanced heterogeneous networks

The network capacity can be improved by using heterogeneous networks (HetNet) based on the long term evolution-advanced (LTE-A) standard. In general, HetNet comprises a blend of high power macro cells and low power nodes such as pico cells. The main aim of deploying small cells is to offload traffic from macro cells, to improve coverage in indoor areas and to increase the performance of users at the cell edge. Although there is a improvement in performance of the network, introduction of small cells lead to technical challenges like interference. The necessity of interference management is discussed in this work. A soft frequency reuse mechanism, which allocates resources in frequency domain is utilized in this work, which mitigates the interference significantly.