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UE channel bandwidthV16.5.0

Toolbox: N_RB and minumum guardband calculator

Input: frequency range, subcarrier-spacing and bandwidth
Output: number of RBs and the guard bandwidth

FR	SCS [kHz]	BW_Channel [MHz]	N_RB	BW_Guard [kHz]
			270	692.5

Toolbox: Band info lookup

Input: band, [optional] subcarrier-spacing
Output: frequency range, bandwidth, duplexing type, and possible channel bandwidth

Band	SCS	FR	UL band [MHz]		DL band [MHz]		BW [MHz]	Duplex	Possible channel bandwidth
Band	SCS	FR	F_{UL_low}	F_{UL_high}	F_{DL_low}	F_{DL_high}	BW [MHz]	Duplex	Possible channel bandwidth
		1	1920	1980	2110	2170	2 x 60	FDD	15: [5, 10, 15, 20, 25, 30, 40, 50]
									30: [10, 15, 20, 25, 30, 40, 50]
									60: [10, 15, 20, 25, 30, 40, 50]

The UE channel bandwidth supports a single NR RF carrier in the uplink or downlink at the UE. From a BS perspective, different UE channel bandwidths may be supported within the same spectrum for transmitting to and receiving from UEs connected to the BS. Transmission of multiple carriers to the same UE (CA) or multiple carriers to different UEs within the BS channel bandwidth can be supported.

From a UE perspective, the UE is configured with one or more BWP / carriers, each with its own UE channel bandwidth. The UE does not need to be aware of the BS channel bandwidth or how the BS allocates bandwidth to different UEs.

The placement of the UE channel bandwidth for each UE carrier is flexible but can only be completely within the BS channel bandwidth.

Note:

In 4G LTE, there is a one-to-one mapping between base station channel bandwidth and UE channel bandwidth.
In 5G NR, the base station channel bandwidth can be greater than or equal to the UE channel bandwidth. E.g., a NR base station could support 100MHz channel bandwidth, while a UE could use only 20MHz bandwidth. Different UE could use different sections of the total base station channel.

The relationship between the channel bandwidth, the guardband and the maximum transmission bandwidth configuration is shown in TS 38.101 Figure 5.3.1-1.

Figure 5.3.1-1: Channel bandwidth and transmission bandwidth

Frequency range selector

Select the FR range will affect what you see in the remainder of this page.

Possible bandwidth for different frequency ranges

Frequency range designation	Bandwidth
FR1	5 to 100 MHz
FR2	50 to 400 MHz
Both	5 to 400 MHz

Maximum transmission bandwidth configuration

The maximum transmission bandwidth configuration NRB for each UE channel bandwidth and subcarrier spacing is specified in Table 5.3.2-1.

Note:

SCS of 60kHz can be used for both FR1 and FR2
SCS of 240kHz is only used for SSB, not for data transmission
FR1 may use channel bandwidth of up to 50MHz when using 15kHz subcarrier spacing, and up to 100MHz when using 30 or 60kHz subcarrier spacings. Each band may have its own restrictions the possible channel bandwidth to use.
FR2 may use channel bandwidth of up to 200MHz when using 60MHz subcarrier spacing, and up to 400MHz when using 120MHz subcarrier spacing.

Table 5.3.2-1: Maximum transmission bandwidth configuration NRB

FR	SCS (kHz)	5 MHz	10 MHz	15 MHz	20 MHz	25 MHz	30 MHz	40 MHz	50 MHz	60 MHz	70 MHz	80 MHz	90 MHz	100 MHz	200 MHz	400 MHz
1	15	25	52	79	106	133	160	216	270
1	30	11	24	38	51	65	78	106	133	162	189	217	245	273
1	60		11	18	24	31	38	51	65	79	93	107	121	135
2	60								66					132	264
2	120								32					66	132	264
2	240													0	0	0

Minimum guardband and transmission bandwidth configuration

A guard band is an unused part of the radio spectrum between radio bands, for the purpose of preventing interference. The minimum guardband for each UE channel bandwidth and SCS is specified in Table 5.3.3-1.

Table 5.3.3-1: Minimum guardband for each UE channel bandwidth and SCS (kHz)

FR	SCS (kHz)	5 MHz	10 MHz	15 MHz	20 MHz	25 MHz	30 MHz	40 MHz	50 MHz	60 MHz	70 MHz	80 MHz	90 MHz	100 MHz	200 MHz	400 MHz
1	15	242.5	312.5	382.5	452.5	522.5	592.5	552.5	692.5
1	30	505	665	645	805	785	945	905	1045	825	965	925	885	845
1	60		1010	990	1330	1310	1290	1610	1570	1530	1490	1450	1410	1370
2	60								1210					2450	4930
2	120								1900					2420	4900	9860
2	240													3800	7720	15560

The minimum guardbands have been calculated using the following equation (except for FR2 with 240kHz SCS), where is from Table 5.3.2-1, is the channel bandwidth in MHz.

What it means: Guard band equals total channel bandwidth minus transmission bandwidth, then divided by two. There is one SCS component in the equation to count for the unused center subcarrier.

The number of RBs configured in any channel bandwidth shall ensure that the minimum guardband is met.

Figure 5.3.3-2 UE PRB utilization

In the case that multiple numerologies are multiplexed in the same symbol due to BS transmission of SSB, the minimum guardband on each side of the carrier is the guardband applied at the configured channel bandwidth for the numerology that is received immediately adjacent to the guard.

If multiple numerologies are multiplexed in the same symbol and the UE channel bandwidth is >50 MHz, the minimum guardband applied adjacent to 15 kHz SCS shall be the same as the minimum guardband defined for 30 kHz SCS for the same UE channel bandwidth.

Figure 5.3.3-3 Guard band definition when transmitting multiple numerologies

UE channel bandwidth per operating band

The requirements apply to the combination of channel bandwidths, SCS and operating bands shown in Table 5.3.5-1. The transmission bandwidth configuration in Table 5.3.2-1 shall be supported for each of the specified channel bandwidths. The channel bandwidths are specified for both the TX and RX path.

Table 5.3.5-1 Channel bandwidths for each NR band

FR	NR Band	SCS (kHz)	5 MHz	10 MHz	15 MHz	20 MHz	25 MHz	30 MHz	40 MHz	50 MHz	60 MHz	70 MHz	80 MHz	90 MHz	100 MHz	200 MHz	400 MHz
1	n1	15	5	10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50
		60		10	15	20	25	30	40	50
1	n2	15	5	10	15	20
		30		10	15	20
		60		10	15	20
1	n3	15	5	10	15	20	25	30	40
		30		10	15	20	25	30	40
		60		10	15	20	25	30	40
1	n5	15	5	10	15	20
		30		10	15	20
		60
1	n7	15	5	10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50
		60		10	15	20	25	30	40	50
1	n8	15	5	10	15	20
		30		10	15	20
		60
1	n12	15	5	10	15
		30		10	15
		60
1	n14	15	5	10
		30		10
		60
1	n18	15	5	10	15
		30		10	15
		60
1	n20	15	5	10	15	20
		30		10	15	20
		60
1	n25	15	5	10	15	20	25	30	40
		30		10	15	20	25	30	40
		60		10	15	20	25	30	40
1	n26	15	5	10	15	20
		30		10	15	20
		60
1	n28	15	5	10	15	20		30
		30		10	15	20		30
		60
1	n29	15	5	10
		30		10
		60
1	n30	15	5	10
		30		10
		60
1	n34	15	5	10	15
		30		10	15
		60		10	15
1	n38	15	5	10	15	20	25	30	40
		30		10	15	20	25	30	40
		60		10	15	20	25	30	40
1	n39	15	5	10	15	20	25	30	40
		30		10	15	20	25	30	40
		60		10	15	20	25	30	40
1	n40	15	5	10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50	60		80
		60		10	15	20	25	30	40	50	60		80
1	n41	15		10	15	20		30	40	50
		30		10	15	20		30	40	50	60		80	90	100
		60		10	15	20		30	40	50	60		80	90	100
1	n46	15		10		20			40
		30		10		20			40		60		80
		60
1	n47	15		10		20		30	40
		30		10		20		30	40
		60		10		20		30	40
1	n48	15	5	10	15	20			40	50
		30		10	15	20			40	50	60		80	90	100
		60		10	15	20			40	50	60		80	90	100
1	n50	15	5	10	15	20		30	40	50
		30		10	15	20		30	40	50	60		80
		60		10	15	20		30	40	50	60		80
1	n51	15	5
		30
		60
1	n53	15	5	10
		30		10
		60		10
1	n65	15	5	10	15	20				50
		30		10	15	20				50
		60		10	15	20				50
1	n66	15	5	10	15	20	25	30	40
		30		10	15	20	25	30	40
		60		10	15	20	25	30	40
1	n70	15	5	10	15	20	25
		30		10	15	20	25
		60		10	15	20	25
1	n71	15	5	10	15	20
		30		10	15	20
		60
1	n74	15	5	10	15	20
		30		10	15	20
		60		10	15	20
1	n75	15	5	10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50
		60		10	15	20	25	30	40	50
1	n76	15	5
		30
		60
1	n77	15		10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50	60	70	80	90	100
		60		10	15	20	25	30	40	50	60	70	80	90	100
1	n78	15		10	15	20	25	30	40	50
		30		10	15	20	25	30	40	50	60	70	80	90	100
		60		10	15	20	25	30	40	50	60	70	80	90	100
1	n79	15							40	50
		30							40	50	60		80		100
		60							40	50	60		80		100
1	n80	15	5	10	15	20	25	30
		30		10	15	20	25	30
		60		10	15	20	25	30
1	n81	15	5	10	15	20
		30		10	15	20
		60
1	n82	15	5	10	15	20
		30		10	15	20
		60
1	n83	15	5	10	15	20
		30		10	15	20
		60
1	n84	15	5	10	15	20
		30		10	15	20
		60		10	15	20
1	n86	15	5	10	15	20			40
		30		10	15	20			40
		60		10	15	20			40
1	n89	15	5	10	15	20
		30		10	15	20
		60
1	n90	15		10	15	20		30	40	50
		30		10	15	20		30	40	50	60		80	90	100
		60		10	15	20		30	40	50	60		80	90	100
1	n91	15	5	10
		30
		60
1	n92	15	5	10	15	20
		30		10	15	20
		60
1	n93	15	5	10
		30
		60
1	n94	15	5	10	15	20
		30		10	15	20
		60
1	n95	15	5	10	15
		30		10	15
		60		10	15
1	n96	15				20			40
		30				20			40		60		80
		60
2	n257	60								50					100	200
2	n257	120								50					100	200	400
2	n258	60								50					100	200
2	n258	120								50					100	200	400
2	n259	60								50					100	200
2	n259	120								50					100	200	400
2	n260	60								50					100	200
2	n260	120								50					100	200	400
2	n261	60								50					100	200
2	n261	120								50					100	200	400

Asymmetric channel bandwidths

The UE channel bandwidth can be asymmetric in downlink and uplink. In asymmetric channel bandwidth operation, the narrower carrier shall be confined within the frequency range of the wider channel bandwidth.

In FDD, the confinement is defined as a deviation to the default Tx-Rx carrier center frequency separation (defined in Default UE TX-RX frequency separation) as following

The operating bands and supported asymmetric channel bandwidth combinations are defined in table 5.3.6-1 for FDD and table 5.3.6-2 for TDD.

Note: Only FR1 has asymmetric channel bandwidths

Table 5.3.6-1: FDD asymmetric UL and DL channel bandwidth combinations

NR Band	Channel bandwidths for UL [MHz]	Channel bandwidths for DL [MHz]	Combination set
n66	5, 10	20, 40	0
	20	40	0
	50, 10	20, 25, 30, 40	1
	20, 25, 30	40	1
n70	5	10, 15	0
n70	5, 10, 15	20, 25	0
n71	5	10	0
	10	15	0
	15	20	0
n91	10	5	0
n92	5	10, 15, 20	0
n92	10	15, 20	0
n93	10	5	0
n94	5	10, 15, 20	0
n94	10	15, 20	0

Table 5.3.6-2: TDD asymmetric UL and DL channel bandwidth combinations

NR Band	Channel bandwidths for UL [MHz]	Channel bandwidths for DL [MHz]
n50	60	80

FR	SCS (kHz)	5 MHz	10 MHz	15 MHz	20 MHz	25 MHz	30 MHz	40 MHz	50 MHz	60 MHz	70 MHz	80 MHz	90 MHz	100 MHz	200 MHz	400 MHz
1	15	25	52	79	106	133	160	216	270
1	30	11	24	38	51	65	78	106	133	162	189	217	245	273
1	60		11	18	24	31	38	51	65	79	93	107	121	135
2	60								66					132	264
2	120								32					66	132	264
2	240													0	0	0

FR	SCS (kHz)	5 MHz	10 MHz	15 MHz	20 MHz	25 MHz	30 MHz	40 MHz	50 MHz	60 MHz	70 MHz	80 MHz	90 MHz	100 MHz	200 MHz	400 MHz
1	15	25	52	79	106	133	160	216	270
1	30	11	24	38	51	65	78	106	133	162	189	217	245	273
1	60		11	18	24	31	38	51	65	79	93	107	121	135
2	60								66					132	264
2	120								32					66	132	264
2	240													0	0	0