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Analysis and Simulation of Downlink Scheduling Algorithms on 5G NSA Networks Under FTP Traffic

Abstract:

This research presents the performance of Round Robin, Proportional Fair and Maximum Throughput scheduling techniques for 5G NSA mobile networks. The tests run considering a variable and increasing number of users using the FTP Model 3 traffic scheme, and a low frequency band (1800 MHz FR-1) to know how the throughput, delay and spectral efficiency behave under these circumstances. In general, the results show that either Proportional Fair or Maximum Throughput schedulers can be a good choice for FTP traffic. Even though Round Robin provides a throughput as high as the one obtained by the Maximum Throughput scheduler (15% less), the delay introduced to all users is also high. For ITU requirements on eMBB services, we found that only the delay at User Plane level could be satisfied.