Scheduling optimization: proportional fair, round robin, max C/I

Round Robin vs Max C/I

The MAC scheduler is the brain of the gNB — it decides which UE gets which resources (PRBs) in each TTI. The scheduler algorithm fundamentally determines the tradeoff between total cell throughput and per-user fairness. Round Robin (RR) allocates equal time and resource shares to all active UEs regardless of their channel conditions. It is perfectly fair but inefficient because PRBs allocated to UEs with poor channels carry very few bits, while those for UEs with excellent channels could carry much more data. Max C/I (Maximum Carrier-to-Interference) always schedules the UE with the best…