Capacity enhanced scheduler for LTE downlink system based on PF algorithm

Abstract

The mechanisms of allocating the resources in Long Term Evolution (LTE) cellular networks are very critical issues, because scheduling algorithms have the main responsibility for determining how to allocate radio resources for different users. In this work a dynamically adopted Proportional Fair (PF) scheduling strategy for capacity enhancement of LTE system is proposed. Performance comparison with the conventional PF downlink scheduler and the Best-Channel Quality Indicator (Best-CQI) scheduling algorithm is presented. The results of the simulation demonstrate that the introduced scheduling strategy enhances the overall system capacity and also provides a high level of fairness among all active Users Equipment (UEs). The proposed algorithm improves the average cell throughput by more than 31 %, with a slight degradation in the fairness level with respect to the conventional PF scheduling strategy.