3GPP TS 38.101 RF Channel Raster Mapping.
Channel Config
Awaiting Waveform Parameters
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The NR Absolute Radio Frequency Channel Number (NR-ARFCN) defines the center frequency of an RF channel. Unlike previous generations, 5G NR uses three different frequency scales with varying step sizes (5 kHz, 15 kHz, and 60 kHz).
High precision for DL/UL carrier placement.
FR2 uses 60 kHz raster steps for much wider channels.