COMPARATIVE STUDY ON THE PERFORMANCE OF ROUND ROBIN AND PROPORTIONAL FAIR DOWNLINK RESOURCE SCHEDULERS AT DDIFFERENT STATE OF USER MOBILITY IN LTE

Abstract

In this paper, a comparative study has been carried out between the two most popular Downlink Resource Scheduling techniques in LTE based on user end mobility. Round Robin and Proportional Fair techniques have been considered for the analysis. The study has been performed via simulation using Vienna LTE-A Downlink System Level Simulator v2.0 Q3 2018 in a Heterogeneous Network scenario. The performances of the schedulers are evaluated for both stationary and moving users according to average UE (User End) throughput and average UE spectral efficiency. It is found that Round Robin technique performs better in lower velocities and Proportional Fair technique performs better in higher velocities. Keeping the feature in mind, a switching system combining both the techniques has been proposed.