5G NR GSCN Calculator

This Page provides information about 5G NR GSCN (Global Synchronization Channel Number) Calculator. Calculator is based on 3GPP TS 38.104 Release 15 specification.

It will help you to convert the number of the 5G NR GSCN (Global Synchronization Channel Number) to the 5G NR SSref frequency and back (5G NR SSref frequency to 5G NR GSCN)

Example: 5G NR GSCN = 7725, 5G SSref Frequency = 3325.44 MHz

The formula for 5G NR GSCN is described in 3GPP TS 38.104 chapter 5.4.3

Table 5.4.3.1-1: GSCN parameters for the global frequency raster

Range of frequencies (MHz)SS block frequency position SSREFGSCNRange of GSCN
0 – 3000N * 1200 kHz + M * 50 kHz, N = 1:2499, M ϵ {1,3,5} (Note)3N + (M-3)/22 – 7498
3000 – 242503000 MHz + N * 1.44 MHz, N = 0:147567499 + N7499 – 22255
24250 – 10000024250.08 MHz + N * 17.28 MHz, N = 0:438322256 + N22256 – 26639
NOTE: The default value for operating bands which only support SCS spaced channel raster(s) is M=3.

Table 5.4.3.3-1: Applicable SS raster entries per operating band (FR1)

NR operating bandSS Block SCSSS Block pattern (note)Range of GSCN (First – <Step size> – Last)
n115 kHzCase A5279 – <1> – 5419
n215 kHzCase A4829 – <1> – 4969
n315 kHzCase A4517 – <1> – 4693
n515 kHzCase A2177 – <1> – 2230
n530 kHzCase B2183 – <1> – 2224
n715 kHzCase A6554 – <1> – 6718
n815 kHzCase A2318 – <1> – 2395
n1215 kHzCase A1828 – <1> – 1858
n1415 kHzCase A1901 – <1> – 1915
n1815kHzCaseA2156 – <1> – 2182
n2015 kHzCase A1982 – <1> – 2047
n2515 kHzCase A4829 – <1> – 4981
n2815 kHzCase A1901 – <1> – 2002
n2915 kHzCase A1798 – <1> – 1813
n3015 kHzCase A5879 – <1> – 5893
n3415 kHzCase A5030 – <1> – 5056
n3815 kHzCase A6431 – <1> – 6544
n3915 kHzCase A4706 – <1> – 4795
n4015 kHzCase A5756 – <1> – 5995
n4115 kHzCase A6246 – <3> – 6717
n4130 kHzCase C6252 – <3> – 6714
n4830 kHzCase C7884 – <1> – 7982
n5015 kHzCase A3584 – <1> – 3787
n5115 kHzCase A3572 – <1> – 3574
n6515 kHzCase A5279 – <1> – 5494
n6615 kHzCase A5279 – <1> – 5494
n6630 kHzCase B5285 – <1> – 5488
n7015 kHzCase A4993 – <1> – 5044
n7115 kHzCase A1547 – <1> – 1624
n7415 kHzCase A3692 – <1> – 3790
n7515 kHzCase A3584 – <1> – 3787
n7615 kHzCase A3572 – <1> – 3574
n7730 kHzCase C7711 – <1> – 8329
n7830 kHzCase C7711 – <1> – 8051
n7930 kHzCase C8480 – <16> – 8880
[n90]15 kHzCase A6246 – <1> – 6717
[n90]30 kHzCase C6252 – <1> – 6714
NOTE: SS Block pattern is defined in section 4.1 in TS 38.213 [10].

Table 5.4.3.3-2: Applicable SS raster entries per operating band (FR2)

NR operating bandSS Block SCSSS Block pattern (note)Range of GSCN (First – <Step size> – Last)
n257 120 kHzCase D22388 – <1> – 22558
n257 240 kHzCase E22390 – <2> – 22556
n258120 kHzCase D22257 – <1> – 22443
n258240 kHzCase E22258 – <2> – 22442
n260 120 kHzCase D22995 – <1> – 23166
n260 240 kHzCase E22996 – <2> – 23164
n261120 kHzCase D22446 – <1> – 22492
n261240 kHzCase E22446 – <2> – 22490
NOTE: SS Block pattern is defined in section 4.1 in TS 38.213 [10].

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