NB-IoT vs LTE-M vs RedCap — what each is for

NB-IoT — Lowest Power, Deepest Coverage

NB-IoT (also called Cat-NB1 / Cat-NB2) was designed for the deepest low-power IoT segment. It uses a single 180 kHz carrier — a single LTE physical resource block — supporting peak rates around twenty-six kilobits per second downlink and roughly sixty kilobits per second uplink. NB-IoT does not support handover in connected mode, has no voice, and provides only limited mobility through cell reselection in idle mode. In return it achieves 164 decibels of maximum coupling loss, ten-year battery life on small primary cells, and module silicon costs as low as two to three US dollars. This is the…