Beyond Speed: How 5G NR is Rewriting the Rules of Connectivity
"5G NR supports scalable numerology where subcarrier spacing = 15 × 2ⁿ kHz (n=0,1,2,3,4). For FR1, 15/30 kHz is typical (larger CP, better for mobility). For FR2, 60/120 kHz is used to withstand phase noise and reduce latency." 5g nr the next generation wireless access technology pdf