Telecom Tutorials by Samir Amberkar: NR ARFCN and GSCN

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3GPP Modem
Simulator

NR ARFCN and GSCN

5G NR Channel raster (NR ARFCN)

F_REF = F_REF-offs + δF_Global (N_REF – N_REF-offs)

F_REF MHz	δF_Global kHz	F_REF-offs MHz	N_REF-offs	N_REF
0 - 3000	5	0	0	0 – 599999
3000 – 24250	15	3000	600000	600000 – 2016666
24250 – 100000	60	24250.08	2016667	2016667 – 3279165

Synchronization raster (GSCN)

Frequencies MHz	SS_REF kHz	GSCN	GSCN Range
0 - 3000	N * 1200 kHz + M * 50 kHz, N = 1:2499, M ϵ {1,3,5}	3*N + (M-3)/2	2 – 7498
3000 – 24250	3000 MHz + N * 1.44 MHz, N = 0:14756	7499 + N	7499 – 22255
24250 – 100000	24250.08 MHz + N * 17.28 MHz, N = 0:4383	22256 + N	22256 – 26639

Below tool finds SSB frequencies within given NR ARFCN and Bandwidth configuration.
Tables referred (from 3GPP TS 38.104) are 5.4.2.3-1/2, 5.3.5-1/2, 5.3.2-1/2, and 5.4.3.3-1/2.
Other reference sections are 38.211:7.4.3 and 38.213:13.

As per 38.104 V15.13.0 (2021-03)
FR:
Band:
DL NR ARFCN:
SCS (kHz):
Bandwidth (MHz):
SSB SCS (kHz):