Globally, the C-band refers to frequencies between 4 and 8GHz. In the U.S., however, carriers don’t have access to all those frequencies, and right now, they’re only using frequencies between 3.7 and 3.98GHz. That means that while mid-band is a subset of Sub-6, C-band in the U.S. is a subset of mid-band frequencies .31 Oca 2022