Inter-cell interference coordination with soft frequency reuse method for LTE network

Abstract

Due to the requirement of high capacity to access broadband service as well as high spectrum efficiency, the frequency reuse of one is targeted to be applied in LTE network planning. But it can lead to a worse inter-cell interference levels experienced especially by users located at the cell edge area. Soft Frequency Reuse (SFR) is considered as an effective frequency reuse scheme for inter-cell interference coordination to increase the spectrum efficiency. In this research, an LTE network will be planned at 1800 MHz using monte carlo computer simulation to examine the performance of SFR for LTE downlink transmission. We consider issues of different power ratio and various traffic loads. Both performance of cell edge users and overall cell performance are evaluated in terms of SINR, BLER, and throughput. The result of performance with SFR scheme will be compared againts the classical frequency reuse one and frequency reuse three scheme. The simulation result shows that SFR can improve the performance for the users at the cell edge. In general, SINR can be increased about four times compared with frequency reuse one and BLER can be improved up to 81,41%.