NR radio resources


NR frame, radio resources
ASN1 messages, protocols

System Information (38.331)

SIB Description Comment
MIB Master Information Block SFN, SCS, SIB1 PDCCH resource, cell barred
1 cell re-selection information, PLMN, SI scheduling info, IMS support Scheduling of other SIBs, UAC
2 cell re-selection information common for intra-frequency, inter-frequency and/ or inter-RAT
3 intra-frequency cell re-selection PCI, q-Offset, q-RxLev, q-Qual, Black cell list
4 inter-frequency cell re-selection ARFCN
5 inter-RAT cell re-selection
6 ETWS primary notification
7 ETWS secondary notification
8 CMAS notification
9 GPS time and Coordinated Universal Time (UTC)

Sub carrier spacing 38.300

μ SCS
Δ = 2μ x 15		 PRB
bandwidth		 Frame
duration		 Subframe
duration		 Slots per
frame		 Slots per
subframe		 Slot
duration		 Symbols per
slot		 Symbol
duration		 Supported
for data		 Supported
for sync
0 15 kHz 180 kHz 10 ms 1 ms 10 1 1 ms 14 71.43 μs Yes Yes
1 30 kHz 360 kHz 10 ms 1 ms 20 2 500 μs 14 35.71 μs Yes Yes
2 60 kHz 720 kHz 10 ms 1 ms 40 4 250 μs 14 17.86 μs Yes No
3 120 kHz 1.44 MHz 10 ms 1 ms 80 8 125 μs 14 8.93 μs Yes Yes
4 240 kHz 2.88 MHz 10 ms 1 ms 160 16 62.5 μs 14 4.46 μs No Yes
5 480 kHz 5.76 MHz 10 ms 1 ms 320 32 31.25 μs 14 2.23 μs Yes Yes
6 960 kHz 11.52 MHz 10 ms 1 ms 640 64 15.625 μs 14 1.12 μs Yes Yes

Nslotsymb = 14
Number of OFDM symbols in a slot (normal cyclic prefix)
NRBsc = 12
Resource block size in the frequency domain, expressed as a number of subcarriers

Transmission bandwidth [MHz] configuration NRB for FR1

BW = real bandwidth
μ SCS
 (kHz) 		 5
 MHz 		 10
 MHz 		 15
 MHz 		 20
 MHz 		 25
 MHz 		 30
 MHz 		 35
 MHz 		 40
 MHz 		 45
 MHz 		 50
 MHz 		 60
 MHz 		 70
 MHz 		 80
 MHz 		 90
 MHz 		 100
 MHz 
0
BW		 15 25
4.5		 52
9.4		 79
14.2		 106
19.1		 133
23.9		 160
28.8		 188
33.8		 216
38.9		 242
43.6		 270
48.6		 N/A N/A N/A N/A N/A
1
BW		 30 11
4		 24
8.6		 38
13.7		 51
18.4		 65
23.4		 78
28.1		 92
33.1		 106
38.2		 119
42.8		 133
47.9		 162
58.3		 189
68		 217
78.1		 245
88.2		 273
98.3
2
BW		 60 N/A 11
7.9		 18
13		 24
17.3		 31
22.3		 38
27.4		 44
31.7		 51
36.7		 58
41.8		 65
46.8		 79
56.9		 93
67		 107
77		 121
87.1		 135
97.2

Transmission bandwidth [MHz] configuration NRB for FR2-1

BW = real bandwidth
μ SCS
 (kHz) 		 50
 MHz 		 100
 MHz 		 200
 MHz 		 400
 MHz 
2
BW		 60 66
47.5		 132
95		 264
190.1		 N/A
3
BW		 120 32
46.1		 66
95		 132
190.1		 264
380.2

Transmission bandwidth [MHz] configuration NRB for FR2-2

BW = real bandwidth
μ SCS
 (kHz) 		 100
 MHz 		 400
 MHz 		 800
 MHz 		 1600
 MHz 		 2000
 MHz 
3
BW		 120 66
95		 264
380.2		 N/A N/A N/A
5
BW		 480 N/A 66
380.2		 124
714.2		 248
1428.5		 N/A
6
BW		 960 N/A 33
380.2		 62
714.2		 124
1428.5		 148
1705

Minimum guarband [KHz] for FR1

GB = minimum guardband
μ SCS
 (kHz) 		 5
 MHz 		 10
 MHz 		 15
 MHz 		 20
 MHz 		 25
 MHz 		 30
 MHz 		 35
 MHz 		 40
 MHz 		 45
 MHz 		 50
 MHz 		 60
 MHz 		 70
 MHz 		 80
 MHz 		 90
 MHz 		 100
 MHz 
0 15 242.5 312.5 382.5 452.5 522.5 592.5 572.5 552.5 712.5 692.5 N/A N/A N/A N/A N/A
1 30 505 665 645 805 785 945 925 905 1065 1045 825 965 925 885 845
2 60 N/A 1010 990 1330 1310 1290 1630 1610 1590 1570 1530 1490 1450 1410 1370

Minimum guarband [KHz] for FR2-1

GB = minimum guardband
μ SCS
 (kHz) 		 50
 MHz 		 100
 MHz 		 200
 MHz 		 400
 MHz 
2 60 1210 2450 4930 N/A
3 120 1900 2420 4900 9860
4 240 N/A 3800 7720 15560

Minimum guarband [KHz] for FR2-2

GB = minimum guardband
μ SCS
 (kHz) 		 100
 MHz 		 400
 MHz 		 800
 MHz 		 1600
 MHz 		 2000
 MHz 
3 120 2420 9860 N/A N/A N/A
5 480 N/A 9680 42640 85520 N/A
6 960 N/A 9440 42400 85280 147040

Control channel element 38.211

A control-channel element consists (CCE) of 6 resource-element groups (REGs)
A resource-element group (REG) equals one resource block during one OFDM symbol (1 REG = 12 RE)
For 273 PRBs, there is maximum 273/6 = 45 CCEs, or 45*6 = 270 REGs, on 1 symbol

Maximum CCE / symbol for FR1


NCCE max
μ SCS
(kHz)		 5
MHz		 10
MHz		 15
MHz		 20
MHz		 25
MHz		 30
MHz		 35
MHz		 40
MHz		 45
MHz		 50
MHz		 60
MHz		 70
MHz		 80
MHz		 90
MHz		 100
MHz
0 15 4 8 13 17 22 26 31 36 40 45 N/A N/A N/A N/A N/A
1 30 1 4 6 8 10 13 15 17 19 22 27 31 36 40 45
2 60 N/A 1 3 4 5 6 7 8 9 10 13 15 17 20 22

Maximum CCE / symbol for FR2-1


NCCE max
μ SCS
(kHz)		 50
MHz		 100
MHz		 200
MHz		 400
MHz
2 60 11 22 44 N/A
3 120 5 11 22 44

Maximum CCE / symbol for FR2-2


NCCE max
μ SCS
(kHz)		 100
MHz		 400
MHz		 800
MHz		 1600
MHz		 2000
MHz
3 120 11 44 N/A N/A N/A
5 480 N/A 11 20 41 N/A
6 960 N/A 5 10 20 24

Timing Advance Command

A device receives a timing advance command from the network and adjusts uplink timing for PUCCH / PUSCH / SRS transmission

Frame basic time 38.211

Basic time unit : Tc = 1 ÷ (480 × 103 × 4096) seconds
NTA = timing offset between uplink and downlink radio frames at the UE, expressed in units of Tc

MAC Timing Advance Command 38.321

Distance between a device and the network antenna :
A timing advance of one Tc is equivalent to a distance of (3 × 108 × 1 ÷ (480 × 103 × 4096)) ÷ 2 = 0,076 m
Distance = propagation speed (light speed) × one Tc delay ÷ 2 (downlink path + uplink path)

Transmission timing adjustments 38.213

Initial absolute Random Access Response MAC payload (12 bits) TA range = 0, 1, 2,..., 3846
Timing adjustment is always positive
NTA = TA x 16 x 64 ÷ 2 μ
Example : TA = 1, μ = 1 → NTA = 1 x 512 Tc
Distance equals 512 x 0.076 m = 39.06 m
Maximum absolute distance between a device and the network antenna : 3846 x 39.06 m = 150.234 km (93.35 mi)

TA 

Periodic relative Timing Advance Command MAC Control Element (6 bits) TA range = 0, 1, 2,..., 63
Timing adjustment may be negative, null or positive
NTA_new = NTA_old + (TA - 31) x 16 x 64 ÷ 2 μ
Example : TA = 30, μ = 1 → NTA_new = NTA_old + (30 - 31) x 16 x 64 / 21 = NTA_old - 1 x 512 Tc
Distance variation equals -1 x 512 x 0.076 m = - 39.06 m
Maximum distance variation = -31 x 512 x 0.076 m = - 1.21 km or +32 x 512 x 0.076 m = + 1.25 km (0.77 mi)