6 Conducted transmitter characteristics (IAB-DU and IAB-MT)

38.176-13GPPIntegrated Access and Backhaul (IAB) conformance testingNRPart 1: conducted conformance testingRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

6.1 General

General test conditions for conducted transmitter tests are given in clause 4, including interpretation of measurement results and configurations for testing. IAB configurations for the tests are defined in clause 4.5.

If a number of single-band connectors, or multi-band connectors have been declared equivalent (D.32), only a representative one is necessary to be tested to demonstrate conformance.

In clause 6.6.3.5.3, if representative TAB connectors are used then per connector criteria (i.e. option 2) shall be applied.

For IAB-DU and IAB-MT the manufacturer shall declare the minimum number of supported geographical cells (i.e. geographical areas). The declaration is done separately for IAB-DU and IAB-MT. The minimum number of supported geographical cells (N_cells,D.24) relates to the setting with the minimum amount of cell splitting supported with transmission on all TAB connectors supporting the operating band.

For IAB-DU and IAB-MT manufacturer shall also declare TAB connector TX min cell groups (D.34). The declaration is done separately for IAB-DU and IAB-MT. Every TAB connector of the IAB type 1-H supporting transmission in an operating band shall map to one TAB connector TX min cell group supporting the same operating band, where mapping of TAB connectors to cells/beams is implementation dependent.

The number of active transmitter units that are considered when calculating the conducted TX emissions limits (N_TXU,counted) for IAB-DU and IAB-MT is calculated as follows:

N_TXU,counted = min(N_TXU,active, 8×N_cells)

N_{TXU,countedpercell} is used for scaling of basic limits and is derived as N_{TXU,countedpercell}= N_TXU,counted/ N_cells

NOTE: N_TXU,active depends on the actual number of active transmitter units and is independent to the declaration of N_cells.

6.2 IAB output power

6.2.1 General

The IAB type 1-H conducted output power requirement is at TAB connector for IAB type 1-H.

The rated carrier output power of the IAB type 1-H shall be as specified in table 6.2.1-1 for IAB-DU and in table 6.2.1-2 for IAB-MT.

Table 6.2.1-1: IAB type 1-H rated output power limits for IAB-DU classes

IAB-DU class	P_rated,c,sys	P_rated,c,TABC
Wide Area IAB-DU	(Note)	(Note)
Medium Range IAB-DU	≤ 38 dBm +10log(N_TXU,counted)	≤ 38 dBm
Local Area IAB-DU	≤ 24 dBm +10log(N_TXU,counted)	≤ 24 dBm
NOTE: There is no upper limit for the P_rated,c,sys or P_rated,c,TABC of the Wide Area IAB-DU.

Table 6.2.1-2: IAB type 1-H rated output power limits for IAB-MT classes

IAB-MT class	P_rated,c,sys	P_rated,c,TABC
Wide Area IAB-MT	(Note)	(Note)
Local Area IAB-MT	≤ 24 dBm +10log(N_TXU,counted)	≤ 24 dBm
NOTE: There is no upper limit for the P_rated,c,sys or P_rated,c,TABC of the Wide area IAB-MT.

6.2.2 Minimum requirement

The minimum requirement IAB type 1-H applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB-DU is defined in TS 38.174 [2], clause 6.2.2.

The minimum requirement for IAB-MT is defined in TS 38.174 [2], clause 6.2.2.

6.2.3 Test purpose

The test purpose is to verify the accuracy of the maximum carrier output power across the frequency range and under normal and extreme conditions.

6.2.4 Method of test

6.2.4.1 Initial conditions

Test environment:

– Normal, see annex B.2,

– Extreme, see annexes B.3 and B.5.

RF channels to be tested for single carrier: B, M and T; see clause 4.9.1

IAB RF Bandwidth positions to be tested for multi-carrier and/or CA:

– B_RFBW, M_RFBW and T_RFBW for single-band connector(s), see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW for multi-band connector(s), see clause 4.9.1.

Under extreme test environment, it is sufficient to test on one NR-ARFCN or one RF bandwidth position, and with one applicable test configuration defined in clauses 4.7 and 4.8. Testing shall be performed under extreme power supply conditions, as defined in Annex B.5.

NOTE: Tests under extreme power supply conditions also test extreme temperatures.

6.2.4.2 Procedure

For IAB type 1-H where there may be multiple TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1. If IAB simultaneous transmission is declared to be supported (see D.IAB-2 in table 4.6-1), when IAB-MT and IAB-DU are transmitting simultaneously, the measurement may be pretested on one connector at a time or may be tested in parallel as shown in annex D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the power measuring equipment to single-band connector(s) or to multi-band connector(s) under test as shown in annex D.1.1 for IAB type 1-H. All connectors not under test shall be terminated.

2) For single carrier set the connector under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding test models or set of physical channels in clause 4.9.2 at rated carrier output power P_rated,c,TABC for IAB type 1-H (D.21).

For a connector under test declared to be capable of multi-carrier and/or CA operation (D.15-D.16) set the connector under test to transmit on all carriers configured using the applicable test configuration and corresponding power setting specified in clauses 4.7 and 4.8 using the corresponding test models or set of physical channels in clause 4.9.2.

3) Measure the maximum carrier output power (P_max,c,TABC for IAB type 1-H) for each carrier at each connector under test.

In addition, for multi-band connectors, the following steps shall apply:

4) For a multi-band connectors and single band tests, repeat the steps above per involved operating band where single band test configurations and test models shall apply with no carrier activated in the other operating band.

6.2.5 Test requirement

For each single-band connector or multi-band connector under test, the power measured in clause 6.2.4.2 in step 3 shall remain within the values provided in table 6.2.5-1 for normal and extreme test environments relative to the manufacturer’s declared P_rated,c,TABC for IAB type 1-H (D.21):

Table 6.2.5-1: Test requirement for conducted IAB-DU and IAB-MT output power

	Normal test environment	Extreme test environment
IAB-DU,	f ≤ 3.0 GHz: ± 2.7 dB	f ≤ 3.0 GHz: ± 3.2 dB
IAB-MT	3.0 GHz < f ≤ 6.0 GHz: ± 3.0 dB	3.0 GHz < f ≤ 6.0 GHz: ± 3.5 dB

6.3 Output power dynamics

6.3.1 IAB-DU Output Power Dynamics

6.3.1.1 General

The requirements in clause 6.3.1 apply during the transmitter ON period. Transmit signal quality requirements (as specified in clause 6.5) shall be maintained for the output power dynamics requirements of this clause.

6.3.1.2 RE power control dynamic range

6.3.1.2.1 Definition and applicability

The RE power control dynamic range is the difference between the power of an RE and the average RE power for an IAB-DU at maximum carrier output power (P_max,c,TABC,or P_max,c,AC) for a specified reference condition.

For IAB type 1-H this requirement shall apply at each TAB connector supporting transmission in the operating band.

6.3.1.2.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB type 1-H is defined in TS 38.174 [2], clause 6.3.1.2.

6.3.1.2.3 Test purpose

No specific test or test requirements are defined for conducted RE power control dynamic range. The Error Vector Magnitude (EVM) test, as described in clause 6.5.3 provides sufficient test coverage for this requirement.

6.3.1.3 Total power dynamic range

6.3.1.3.1 Definition and applicability

The IAB-DU total power dynamic range is the difference between the maximum and the minimum transmit power of an OFDM symbol for a specified reference condition.

For IAB type 1-H this requirement shall apply at each TAB connector supporting transmission in the operating band.

NOTE: The upper limit of the dynamic range is the OFDM symbol power for an IAB-DU when transmitting on all RBs at maximum output power. The lower limit of the total power dynamic range is the average power for single RB transmission. The OFDM symbol shall carry PDSCH and not contain PDCCH, RS or SSB.

6.3.1.3.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector.

The minimum requirement for IAB-DU is in TS 38.174 [2], clause 6.3.1.3.

6.3.1.3.3 Test purpose

The test purpose is to verify that the total power dynamic range is within the limits specified by the minimum requirement.

6.3.1.3.4 Method of test

6.3.1.3.4.1 Initial conditions

Test environment: Normal, see annex B.2.

RF channels to be tested: M; see clause 4.9.1.

Set the channel set-up of the connector under as shown in annex D.1 for IAB type 1-H.

6.3.1.3.4.2 Procedure

For IAB type 1-H where there may be multiple TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the single-band connector(s) under test as shown in annex D.1.1 for IAB type 1-H. All connectors not under test shall be terminated.

2) Set each connector under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding test models in clause 4.9.2 at P_rated,c,TABC for IAB type 1-H (D.21).

3) For IAB-DU type 1-H, set the IAB-DU to transmit a signal according to:

– IAB-DU-FR1-TM3.1a if 256QAM is supported without power back off, or

– IAB-DU-FR1-TM3.1 if 256QAM is supported with power back off, or

– IAB-DU-FR1-TM3.1 if 256QAM is not supported by IAB-DU.

4) Measure the OFDM symbol TX power (OSTP) as defined in the annex H.

5) For IAB-DU type 1-H, set to transmit a signal according to:

IAB-DU-FR1-TM2a if 256QAM is supported, or

IAB-DU-FR1-TM2 if 256QAM is not supported;

6) Measure the OFDM symbol TX power (OSTP) as defined in the annex H.

In addition, for multi-band connectors, the following steps shall apply:

7) For a multi-band connectors and single band tests, repeat the steps above per involved operating band where single band test configurations and test models shall apply with no carrier activated in the other operating band.

6.3.1.3.5 Test requirements

The downlink (DL) total power dynamic range for each NR carrier shall be larger than or equal to the level in table 6.3.1.3.5-1.

Table 6.3.1.3.5-1: IAB-DU total power dynamic range

NR channel	Total power dynamic range (dB)
bandwidth (MHz)	15 kHz SCS	30 kHz SCS	60 kHz SCS
10	16.7	13.4	10
15	18.5	15.3	12.1
20	19.8	16.6	13.4
25	20.8	17.7	14.5
30	21.6	18.5	15.3
40	22.9	19.8	16.6
50	23.9	20.8	17.7
60	N/A	21.6	18.5
70	N/A	22.3	19.2
80	N/A	22.9	19.8
90	N/A	23.4	20.4
100	N/A	23.9	20.9

NOTE: Additional test requirements for the EVM at the lower limit of the dynamic range are defined in clause 6.5.3.

6.3.2 IAB-MT Output Power Dynamics

6.3.2.1 Total power dynamic range

6.3.2.1.1 Definition and applicability

The IAB-MT total power dynamic range is the difference between the maximum and the minimum controlled transmit power in the channel bandwidth for a specified reference condition. The maximum and minimum output powers are defined as the mean power in at least one sub-frame 1ms.

NOTE: The specified reference condition(s) are specified in the conformance specification Changes in the controlled transmit power in the channel bandwidth due to changes in the specified reference condition are not include as part of the dynamic range.

6.3.2.1.2 Minimum requirement

The IAB-MT total power dynamic range is defined in TS 38.174 [2], clause 6.3.2.1.2.

6.3.2.1.3 Test purpose

The test purpose is to verify that the IAB-MT total power dynamic range is within the limits specified by the minimum requirement.

6.3.2.1.4 Method of test

6.3.2.1.4.1 Initial conditions

Test environment: Normal, see annex B.2.

RF channels to be tested: M; see clause 4.9.1.

Set the channel set-up of the connector under as shown in annex D.1 for IAB type 1-H.

6.3.2.1.4.2 Procedure

1) Connect the single-band connector(s) under test as shown in annex D.1.1 for IAB type 1-H. All connectors not under test shall be terminated.

3) Set the IAB-MT to transmit a signal according to IAB-MT-FR1-TM3.1

4) Measure the power over 1ms

5) Set to transmit a signal according to IAB-MT-FR1-TM2.

6) Measure the power over 1ms

In addition, for multi-band connectors, the following steps shall apply:

6.3.2.1.5 Test requirements

The ΔP between the power measured in step 4 and step 6 of clause 6.3.2.1.4.2 shall be:

Table 6.3.2.1.5-1: IAB-MT Output power dynamics test requirements.

IAB-MT Type	IAB-MT channel bandwidth	Requirement
Wide area	≤ 40MHz	10 log(Maximum RB) -1.2 < ΔP ≤ 10 log(Maximum RB) + 11.2
Wide area	40MHz < BW ≤ 100MHz	10 log(Maximum RB) -1.5 < ΔP ≤ 10 log(Maximum RB) + 11.5
Local area	≤ 40MHz	10 log(Maximum RB) +3.8 < ΔP ≤ 10 log(Maximum RB) + 15.2
Local area	40MHz < BW ≤ 100MHz	10 log(Maximum RB) +3.5 < ΔP ≤ 10 log(Maximum RB) + 16.5

6.3.2.2 Relative power tolerance for local area IAB-MT

6.3.2.2.1 Definition and applicability

The relative power tolerance is the ability of the transmitter to set its output power in a target sub-frame (1 ms) relatively to the power of the most recently transmitted reference sub-frame (1 ms) if the transmission gap between these sub-frames is less than or equal to 20 ms.

6.3.2.2.2 Minimum requirement

The IAB-MT total power dynamic range is defined in TS 38.174 [2], clause 6.3.3.1

6.3.2.2.3 Test purpose

No specific test or test requirements are defined for Relative power tolerance. The Total power dynamic range test, as described in clause 6.3.2.1 provides sufficient test coverage for this requirement.

6.3.2.3 Aggregate power tolerance for local area IAB-MT

6.3.2.3.1 Definition and applicability

The aggregate power control tolerance is the ability of the transmitter to maintain its power in a sub-frame (1 ms) during non-contiguous transmissions within [21 ms] in response to 0 dB commands with respect to the first transmission and all other power control parameters as specified in 3GPP TS 38.213 [12] kept constant.

6.3.2.3.2 Minimum requirement

The IAB-MT Aggregate power tolerance is defined in TS 38.174 [2], clause 6.3.3.2

6.3.2.3.3 Test purpose

No specific test or test requirements are defined for IAB-MT Aggregate power tolerance.

6.4 Transmit ON/OFF power

6.4.1 Transmitter OFF power

6.4.1.1 Definition and applicability

Transmit OFF power requirements apply to TDD operation of IAB-DU and TDD operation of IAB-MT.

Transmitter OFF power is defined as the mean power measured over 70/N us filtered with a square filter of bandwidth equal to the transmission bandwidth configuration of the IAB (BW_Config) centred on the assigned channel frequency during the transmitter OFF period. N = SCS/15, where SCS is Sub Carrier Spacing in kHz.

For IAB type 1-H, for multi-band connectors and for single band connectors supporting transmission in multiple operating bands, the requirement is only applicable during the transmitter OFF period in all supported operating bands.

For IAB type 1-H supporting intra-band contiguous CA, the transmitter OFF power is defined as the mean power measured over 70/N us filtered with a square filter of bandwidth equal to the aggregated IAB channel bandwidth BW_{Channel_CA} centred on (F_edge,high+F_edge,low)/2 during the transmitter OFF period. N = SCS/15, where SCS is the smallest supported Sub Carrier Spacing in kHz in the aggregated IAB channel bandwidth.

6.4.1.2 Minimum requirement

The minimum requirement for IAB type 1-H:

For IAB-DU is in TS 38.174 [2], clause 6.4.1.3.

For IAB-MT is in TS 38.174 [2], clause 6.4.1.4.

6.4.1.3 Test purpose

The purpose of this test is to verify the transmitter OFF power is within the limits of the minimum requirements.

6.4.1.4 Method of test

Requirement is tested together with transmitter transient period, as described in clause 6.4.2.4.

6.4.1.5 Test requirements

The conformance testing of transmit OFF power is included in the conformance testing of transmitter transient period; therefore, see clause 6.4.2.5 for test requirements.

6.4.2 Transmitter transient period

6.4.2.1 Definition and applicability

Transmitter transient period requirements apply to TDD operation of IAB-DU and TDD operation of IAB-MT.

The transmitter transient period is the time period during which the transmitter is changing from the transmitter OFF period to the transmitter ON period or vice versa. The transmitter transient period is illustrated in figure 6.4.2.1-1 for IAB-DU and IAB-MT.

Figure 6.4.2.1-1: Example of relations between transmitter ON period, transmitter OFF period and transmitter transient period for IAB-DU and IAB-MT

For IAB type 1-H, this requirement shall be applied at each TAB connector supporting transmission in the operating band.

6.4.2.2 Minimum requirement

The minimum requirement for IAB type 1-H:

For IAB-DU is in TS 38.174 [2], clause 6.4.2.2.

For IAB-MT is in TS 38.174 [2], clause 6.4.2.3.

6.4.2.3 Test purpose

The purpose of this test is to verify the transmitter transient periods are within the limits of the minimum requirements.

6.4.2.4 Method of test

6.4.2.4.1 Initial conditions

Test environment:

– normal; see annex B.2.

RF channels to be tested for single carrier:

– M; see clause 4.9.1.

RF bandwidth positions to be tested for multi-carrier and/or CA:

– MRFBW in single-band operation, see clause 4.9.1;

– BRFBW_T’RFBW and B’RFBW_TRFBW in multi-band operation, see clause 4.9.1.

6.4.2.4.2 Procedure

The minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1 for IAB type 1-H. If IAB simultaneous transmission is declared to be supported (see D.IAB-2 in table 4.6-1), connector(s) for IAB-MT and IAB-DU may be tested one at a time or TAB connectors may be tested in parallel as shown in Annex D.1.1 for IAB type 1-H. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect TAB connector to measurement equipment as shown in annex D.1.1 for IAB type 1-H. All TAB connectors not under test shall be terminated.

As a general rule, the resolution bandwidth of the measuring equipment should be equal to the measurement bandwidth. However, to improve measurement accuracy, sensitivity, efficiency and avoiding e.g. carrier leakage, the resolution bandwidth may be smaller than the measurement bandwidth. When the resolution bandwidth is smaller than the measurement bandwidth, the result should be integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of the measurement bandwidth.

2) For single carrier set the TAB connector under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding test models or set of physical channels in clause 4.9.2 at manufacturers declared rated carrier output power per TAB connector (P_rated,c,TABC, D.21).

3) Measure the mean power spectral density over 70/N μs filtered with a square filter of bandwidth equal to the RF bandwidth of the TAB connector centred on the central frequency of the RF bandwidth. 70/N μs average window centre is set from 35/N μs after end of one transmitter ON period + 10 μs to 35/N μs before start of next transmitter ON period – 10 μs. N = SCS/15, where SCS is Sub Carrier Spacing in kHz.

4) For a TAB connector supporting contiguous CA, measure the mean power spectral density over 70/N μs filtered with a square filter of bandwidth equal to the aggregated IAB channel bandwidth BW_{Channel_CA} centred on (F_{edge_high}+F_{edge_low})/2. 70/N μs average window centre is set from 35/N μs after end of one transmitter ON period + 10 μs to 35/N μs before start of next transmitter ON period – 10 μs. N = SCS/15, where SCS is the smallest supported Sub Carrier Spacing in kHz in the aggregated IAB channel bandwidth.

In addition, for multi-band connector(s), the following steps shall apply:

5) For multi-band connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.4.2.5 Test requirements

The measured mean power spectral density according to clause 6.4.2.4.2 shall be less than -83 dBm/MHz for carrier frequency f ≤ 3.0 GHz.

The measured mean power spectral density according to clause 6.4.2.4.2 shall be less than -82.5 dBm/MHz for carrier frequency 3.0 GHz < f ≤ 6.0 GHz.

For multi-band connector, the requirement is only applicable during the transmitter OFF period in all supported operating bands.

For IAB simultaneous transmission, the requirement is only applicable during the transmitter OFF period for both IAB-DU and IAB-MT.

6.5 Transmitted signal quality

6.5.1 General

Unless otherwise stated, the requirements in clause 6.5 apply during the transmitter ON period.

6.5.2 Frequency error

6.5.2.1 IAB-DU frequency error

6.5.2.1.1 Definition and applicability

For IAB-DU, frequency error is the measure of the difference between the actual IAB-DU transmit frequency and the assigned frequency. The same source shall be used for RF frequency and data clock generation.

It is not possible to verify by testing that the data clock is derived from the same frequency source as used for RF generation. This may be confirmed by the manufacturer’s declaration.

For IAB type 1-H this requirement shall be applied at each TAB connector supporting transmission in the operating band.

6.5.2.1.2 Minimum Requirement

For IAB-DU, the minimum requirement is in TS 38.174 [2], clause 6.5.1.1.

6.5.2.1.3 Test purpose

The test purpose is to verify that frequency error is within the limit specified by the minimum requirement.

6.5.2.1.4 Method of test

Requirement is tested together with modulation quality test, as described in clause 6.5.3.

6.5.2.1.5 Test Requirements

For IAB-DU, the modulated carrier frequency of each NR carrier configured by the IAB-DU shall be accurate to within the accuracy range given in table 6.5.2.1.5-1 observed over 1 ms.

Table 6.5.2.1.5-1: Frequency error test requirement for IAB-DU

IAB-DU class	Accuracy
Wide Area IAB-DU	±(0.05 ppm + 12 Hz)
Medium Range IAB-DU	±(0.1 ppm + 12 Hz)
Local Area IAB-DU	±(0.1 ppm + 12 Hz)

6.5.2.2 IAB-MT frequency error

6.5.2.2.1 Definition and applicability

For IAB-MT, frequency error is the measure of the difference between actual IAB-MT transmit frequency and the carrier frequency received from the parent node.

For IAB type 1-H this requirement shall be applied at each TAB connector supporting transmission in the operating band.

6.5.2.2.2 Minimum Requirement

For IAB-MT, the minimum requirement is in TS 38.174 [2], clause 6.5.1.2.

6.5.2.2.3 Test purpose

The test purpose is to verify that frequency error is within the limit specified by the minimum requirement.

6.5.2.2.4 Method of test

Requirement is tested together with modulation quality test, as described in clause 6.5.3.

6.5.2.2.5 Test Requirements

For IAB-MT, the mean value of basic measurements of IAB-MT modulated carrier frequency shall be accurate to within the accuracy range given in table 6.6.2.2.5-1 observed over 1 ms cumulated measurement intervals compared to the carrier frequency received from the parent node.

Table 6.5.2.2.5-1: Frequency error test requirement for IAB-MT

IAB-MT frequency range	Accuracy
f ≤ 3.0GHz	±(0.1 ppm + 15 Hz)
f > 3.0GHz	±(0.1 ppm + 36 Hz)

6.5.3 Modulation quality

6.5.3.1 Definition and applicability

Modulation quality is defined by the difference between the measured carrier signal and an ideal signal. Modulation quality can e.g. be expressed as Error Vector Magnitude (EVM). The Error Vector Magnitude is a measure of the difference between the ideal symbols and the measured symbols after the equalization. This difference is called the error vector.

For IAB type 1-H this requirement shall be applied at each TAB connector supporting transmission in the operating band.

6.5.3.2 Minimum Requirement

For IAB-DU, the minimum requirement is in TS 38.174 [2], clause 6.5.2.1.

For IAB-MT, the minimum requirement is in TS 38.174 [2], clause 6.5.2.2.

6.5.3.3 Test purpose

The test purpose is to verify that modulation quality is within the limit specified by the minimum requirement.

6.5.3.4 Method of test

6.5.3.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.9.1.

RF bandwidth positions to be tested for multi-carrier and/or CA:

– B_RFBW, M_RFBW and T_RFBW in single-band operation, see clause 4.9.1;

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation, see clause 4.9.1.

6.5.3.4.2 Procedure for IAB-DU

For IAB-DU, the minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1 for IAB type 1-H. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) For a TAB connector declared to be capable of single carrier operation only (D.16), set the TAB connector under test to transmit a signal according to the applicable test configuration in clause 4.8 using the corresponding test models:

– IAB-DU-FR1-TM3.1a if 256QAM is supported by IAB-DU without power back off, or

– IAB-DU-FR1-TM3.1a at manufacturer’s declared rated output power if 256QAM is supported by IAB-DU with power back off, and IAB-DU-FR1-TM3.1 at maximum power, or

– IAB-DU-FR1-TM3.1 if highest modulation order supported by IAB-DU is 64QAM, or

– IAB-DU-FR1-TM3.2 if highest modulation order supported by IAB-DU is 16QAM, or

– IAB-DU-FR1-TM3.3 if highest modulation order supported by IAB-DU is QPSK.

For a TAB connector declared to be capable of multi-carrier and/or CA operation (D.15-D.16), set the TAB connector under test to transmit according to the applicable test configuration and corresponding power setting specified in clauses 4.7 and 4.8 using the corresponding test models on all carriers configured:

– IAB-DU-FR1-TM 3.1a if 256QAM is supported by IAB-DU without power back off, or

– IAB-DU-FR1-TM3.1a at manufacturer’s declared rated output power if 256QAM is supported by IAB node with power back off, and IAB-DU-FR1-TM3.1 at maximum power, or

– IAB-DU-FR1-TM3.1 if highest modulation order supported by IAB-DU is 64QAM, or

– IAB-DU-FR1-TM3.2 if highest modulation order supported by IAB-DU is 16QAM, or

– IAB-DU-FR1-TM3.3 if highest modulation order supported by IAB-DU is QPSK.

For IAB-DU-FR1-TM3.1a, power back-off shall be applied if it is declared.

2) Measure the EVM and frequency error as defined in annex H.

3) Repeat steps 1 and 2 for IAB-DU-FR1-TM2 if 256QAM is not supported by IAB-DU or for IAB-DU-FR1-TM2a if 256QAM is supported by IAB-DU. For IAB-DU-FR1-TM2 and IAB-DU-FR1-TM2a the OFDM symbol TX power (OSTP) shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.3.4 and test requirements in clause 6.3.3.5.

In addition, for multi-band connector(s), the following steps shall apply:

4) For multi-band connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.5.3.4.3 Procedure for IAB-MT

For IAB-MT, the minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1 for IAB type 1-H. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

– IAB-MT-FR1-TM3.1a if 256QAM is supported by IAB-MT without power back off, or

– IAB-MT-FR1-TM3.1a at manufacturer’s declared rated output power if 256QAM is supported by IAB-MT with power back off, and IAB-MT-FR1-TM3.1 at maximum power, or

– IAB-MT-FR1-TM3.1 with highest modulation order supported by IAB-MT.

– IAB-MT-FR1-TM3.1a if 256QAM is supported by IAB-MT without power back off, or

– IAB-MT-FR1-TM3.1a at manufacturer’s declared rated output power if 256QAM is supported by IAB-MT with power back off, and IAB-MT-FR1-TM3.1 at maximum power, or

– IAB-MT-FR1-TM3.1 with highest modulation order supported by IAB-MT..

For IAB-MT-FR1-TM3.1a, power back-off shall be applied if it is declared.

2) Measure the EVM and frequency error as defined in annex H.

3) Repeat steps 1 and 2 for IAB-MT-FR1-TM2 if 256QAM is not supported by IAB-MT or for IAB-MT-FR1-TM2a if 256QAM is supported by IAB-MT. For IAB-MT-FR1-TM2 and IAB-MT-FR1-TM2a the OFDM symbol TX power (OSTP) shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.3.4 and test requirements in clause 6.3.3.5.

In addition, for multi-band connector(s), the following steps shall apply:

6.5.3.5 Test requirements

The EVM of each NR carrier for different modulation schemes on PDSCH or PUSCH shall be less than the limits in table 6.5.3.5-1a.

Table 6.5.3.5-1: EVM requirements for IAB type 1-H

Modulation scheme for PDSCH or PUSCH	Required EVM (%)
QPSK	18.5 %
16QAM	13.5 %
64QAM	9 %
256QAM	4.5 %

EVM shall be evaluated for each NR carrier over all allocated resource blocks and downlink slots for IAB-DU or uplink slots for IAB-MT. Different modulation schemes listed in table 6.5.3.5-1 shall be considered for rank 1.

For all bandwidths, the EVM measurement shall be performed for each NR carrier over all allocated resource blocks and downlink slots for IAB-DU or uplink slots for IAB-MT within 10 ms measurement periods. The boundaries of the EVM measurement periods need not be aligned with radio frame boundaries.

Table 6.5.3.5-2, 6.5.3.5-3, 6.5.3.5-4 below specify the EVM window length (W) for normal CP for IAB type 1-H.

Table 6.5.3.5-2: EVM window length for normal CP for NR, FR1, 15 kHz SCS

Channel bandwidth (MHz)	FFT size	Cyclic prefix length for symbols 1‑6 and 8-13 in FFT samples	EVM window length W	Ratio of W to total CP length for symbols 1‑6 and 8-13 (%) (Note)
10	1024	72	28	40
15	1536	108	44	40
20	2048	144	58	40
25	2048	144	72	50
30	3072	216	108	50
40	4096	288	144	50
50	4096	288	144	50
Note: These percentages are informative and apply to a slot’s symbols 1 to 6 and 8 to 13. Symbols 0 and 7 have a longer CP and therefore a lower percentage.

Table 6.5.3.5-3: EVM window length for normal CP for NR, FR1, 30 kHz SCS

Channel bandwidth (MHz)	FFT size	Cyclic prefix length for symbols 1‑13 in FFT samples	EVM window length W	Ratio of W to total CP length for symbols 1‑13 (%) (Note)
10	512	36	14	40
15	768	54	22	40
20	1024	72	28	40
25	1024	72	36	50
30	1536	108	54	50
40	2048	144	72	50
50	2048	144	72	50
60	3072	216	130	60
70	3072	216	130	60
80	4096	288	172	60
90	4096	288	172	60
100	4096	288	172	60
Note: These percentages are informative and apply to a slot’s symbols 1 through 13. Symbol 0 has a longer CP and therefore a lower percentage.

Table 6.5.3.5-4: EVM window length for normal CP for NR, FR1, 60 kHz SCS

Channel bandwidth (MHz)	FFT size	Cyclic prefix length in FFT samples	EVM window length W	Ratio of W to total CP length (%) (Note)
10	256	18	8	40
15	384	27	11	40
20	512	36	14	40
25	512	36	18	50
30	768	54	26	50
40	1024	72	36	50
50	1024	72	36	50
60	1536	108	64	60
70	1536	108	64	60
80	2048	144	86	60
90	2048	144	86	60
100	2048	144	86	60
Note: These percentages are informative and apply to all OFDM symbols within subframe except for symbol 0 of slot 0 and slot 2. Symbol 0 of slot 0 and slot 2 has a longer CP and therefore a lower percentage.

6.5.4 Time alignment error

6.5.4.1 Definition and applicability

For IAB-DU, this requirement applies to frame timing in MIMO transmission, carrier aggregation and their combinations. There’s no time alignment error requirement for IAB-MT.

Frames of the NR signals present at the IAB-DU transmitter TAB connectors are not perfectly aligned in time and may experience certain timing differences in relation to each other.

For IAB type 1-H, the TAE is defined as the largest timing difference between any two signals belonging to TAB connectors belonging to different transmitter groups at the transceiver array boundary, where transmitter groups are associated with the TAB connectors in the transceiver unit array corresponding to MIMO transmission, carrier aggregation for a specific set of signals/transmitter configuration/transmission mode.

6.5.4.2 Minimum requirement

The minimum requirements for IAB-DU are in TS 38.174 [2], clause 6.5.3.1.

6.5.4.3 Test purpose

To verify that the time alignment error is within the limit specified by the minimum requirement.

6.5.4.4 Method of test

6.5.4.4.1 Initial conditions

Test environment: Normal, see annex B.2.

RF channels to be tested for single carrier: M; see clause 4.9.1.

RF bandwidth positions to be tested for multi-carrier and/or CA:

– M_RFBW in single-band operation, see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation, see clause 4.9.1.

6.5.4.4.2 Procedure

For IAB type 1-H TAB connectors to be tested are identified from the declared sets of TAB connector beam forming groups in the TAE groups declaration (D.31).

Compliance is to be demonstrated between all pairs of single-band connectors and/or multi-band connectors, however it is not required to exhaustively measure TAE between every combination of pairs of representative connectors. Compliance can be demonstrated by comparison of a reduced set of representative measurement results.

1) Conducted measurement setup:

– For IAB type 1-H: Connect two representative TAB connectors one from separate TAE group (D.31) to the measurement equipment according to annex D.1.4. Terminate any unused TAB connector(s).

2) Set the connectors under test to transmit IAB-DU-FR1-TM 1.1 or any DL signal using MIMO transmission or carrier aggregation.

NOTE: For MIMO transmission, different ports may be configured in IAB-DU-FR1-TM 1.1 (using PDSCH DMRS ports 1000 and 1001).

3) For a connectors declared to be capable of single carrier operation only (D.16), set the representative connectors under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding test models in clause 4.9.2 at rated carrier output power (P_rated,c,AC, or P_rated,c,TABC, D.21).

If the connector under test supports intra band contiguous or non-contiguous CA, set the representative connectors to transmit using the applicable test configuration and corresponding power setting specified in clauses 4.7 and 4.8.

If the IAB-DU supports inter band CA, set the representative connectors to transmit, for each band, a single carrier or all carriers, using the applicable test configuration and corresponding power setting specified in clauses 4.7 and 4.8.

For a connector declared to be capable of multi-carrier operation (D.15), set the IAB-DU to transmit according to the applicable test signal configuration and corresponding power setting specified in clauses 4.7 and 4.8 using the corresponding test model in clause 4.9.2 on all carriers configured.

4) Measure the time alignment error between the different PDSCH demodulation reference signals on different antenna ports belonging to different connectors on the carrier(s) from the representative connectors under test.

5) Repeat step 1 – 4 for any other configuration of connectors, which could be required to demonstrate compliance.

In addition, for multi-band connectors, the following steps shall apply:

6) For a multi-band connectors and single band tests, repeat the steps above per involved operating band where single band test configurations and test models shall apply with no carrier activated in the other operating band.

6.5.4.5 Test requirement

For MIMO transmission, at each carrier frequency, TAE shall not exceed 90 ns.

For intra-band contiguous CA, with or without MIMO, TAE shall not exceed 285 ns.

For intra-band non-contiguous CA, with or without MIMO, TAE shall not exceed 3.025 µs.

For inter-band CA, with or without MIMO, TAE shall not exceed 3.025 µs.

6.5.5 Timing error between IAB-DU and IAB-MT

6.5.5.1 Definition and applicability

This requirement shall apply to IAB-DU DL and IAB-MT UL simultaneous transmission.

The timing error between IAB-DU and IAB-MT is specified for a specific set of simultaneous signals/transmitter configuration/transmission mode.

6.5.5.2 Minimum requirement

The minimum requirements for IAB-DU and IAB-MT are in TS 38.174 [2], clause 6.5.4.

6.5.5.3 Test purpose

To verify that the timing error between IAB-DU and IAB-MT simultaneous transmission is within the limit specified by the minimum requirement.

6.5.5.4 Method of test

6.5.5.4.1 Initial conditions

Test environment: Normal, see annex B.2.

RF channels to be tested for single carrier: M; see clause 4.9.1.

RF bandwidth positions to be tested for multi-carrier and/or CA:

– M_RFBW in single-band operation, see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation, see clause 4.9.1.

6.5.5.4.2 Procedure

Compliance is to be demonstrated between all pairs of single-band connectors and/or multi-band connectors.

1) Conducted measurement setup:

– For IAB type 1-H: Connect two representative TAB connectors one from IAB-DU and one from IAB-MT to the measurement equipment. Terminate any unused TAB connector(s).

2) Set the connectors under test to transmit IAB-DU-FR1-TM1.1 or IAB-MT-FR1-TM1.1, respectively.

For a connector declared to be capable of multi-carrier operation (D.15), set the IAB-DU and IAB-MT to transmit according to the applicable test signal configuration and corresponding power setting specified in clauses 4.7 and 4.8 using the corresponding test model in clause 4.9.2 on all carriers configured.

4) Measure the timing error between DM-RS symbols on the IAB-DU and IAB-MT connectors. Note that the possible difference in DM-RS symbol position and slot number shall be compensated for in the measured timing error.

5) Repeat step 1 – 4 for any other configuration of connectors, which could be required to demonstrate compliance.

In addition, for multi-band connectors, the following steps shall apply:

6.5.5.5 Test requirement

The timing error between IAB-DU and IAB-MT shall not exceed minimum requirement plus measurement uncertainty defined in Table 4.1.2.2-1.

6.6 Unwanted emissions

6.6.1 General

Unwanted emissions consist of out-of-band emissions and spurious emissions according to ITU definitions in recommendation ITU-R SM.329 [5]. In ITU terminology, out of band emissions are unwanted emissions immediately outside the channel bandwidth resulting from the modulation process and non-linearity in the transmitter but excluding spurious emissions. Spurious emissions are emissions which are caused by unwanted transmitter effects such as harmonics emission, parasitic emission, intermodulation products and frequency conversion products, but exclude out of band emissions.

The out-of-band emissions requirement for the IAB-DU and IAB-MT transmitter is specified both in terms of Adjacent Channel Leakage power Ratio (ACLR) and operating band unwanted emissions (OBUE).

The maximum offset of the operating band unwanted emissions mask from the operating band edge is Δf_OBUE. The Operating band unwanted emissions define all unwanted emissions in each supported downlink operating band of IAB-DU and uplink operating band of IAB-MT, plus the frequency ranges Δf_OBUE above and Δf_OBUE below each band. Unwanted emissions outside of this frequency range are limited by a spurious emissions requirement.

The values of Δf_OBUE are defined in tables 6.6.1-1 and 6.6.1-2 for the NR operating bands.

Table 6.6.1-1: Maximum offset of OBUE outside the downlink operating band of IAB-DU

IAB-DU type	Operating band characteristics	Δf_OBUE (MHz)
IAB type 1-H	F_DL,high – F_DL,low < 100 MHz	10
	100 MHz ≤ F_DL,high – F_DL,low ≤ 900 MHz	40

Table 6.6.1-2: Maximum offset of OBUE outside the uplink operating band of IAB-MT

IAB-MT type	Operating band characteristics	Δf_OBUE (MHz)
IAB type 1-H	F_UL,high – F_UL,low < 100 MHz	10
	100 MHz ≤ F_UL,high – F_UL,low ≤ 900 MHz	40

For IAB type 1-H the unwanted emission requirements are applied per the TAB connector TX min cell groups for all the supported configurations. The basic limits and corresponding emissions scaling are defined in each relevant clause.

There is in addition a requirement for occupied bandwidth.

6.6.2 Occupied bandwidth

6.6.2.1 General

The occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage /2 of the total mean transmitted power. See also Recommendation ITU-R SM.328 [6].

The value of /2 shall be taken as 0.5%.

The occupied bandwidth requirement shall apply during the transmitter ON period for a single transmitted carrier. The minimum requirement below may be applied regionally. There may also be regional requirements to declare the occupied bandwidth according to the definition in the present clause.

For IAB type 1-H this requirement shall be applied at each TAB connector supporting transmission in the operating band.

6.6.2.2 Minimum Requirements

The minimum requirement for IAB type 1-H is in TS 38.174 [2] clause 6.6.2.

6.6.2.3 Test purpose

The test purpose is to verify that the emission at the TAB connector does not occupy an excessive bandwidth for the service to be provided and is, therefore, not likely to create interference to other users of the spectrum beyond undue limits.

6.6.2.4 Method of test

6.6.2.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier: M; see clause 4.9.1.

Aggregated IAB channel bandwidth positions to be tested for contiguous carrier aggregation: M_{BW Channel CA}; see clause 4.9.1.

1) Connect the measurement device to TAB connector as shown in annex D.1.1 for IAB type 1-H.

2) For a IAB declared to be capable of single carrier operation (D.16), start transmission according to the applicable test configuration in clause 4.8 using the corresponding test model IAB-DU-FR1-TM1.1 for IAB-DU type 1-H or IAB-MT-FR1-TM1.1 for IAB-MT type 1-H at manufacturer’s declared rated output power (P_rated,c,TABC, D.21).

For an IAB declared to be capable of contiguous CA operation, set the IAB to transmit according to IAB-DU-FR1-TM1.1 for IAB-DU type 1-H or IAB-MT-FR1-TM1.1 for IAB-MT type 1-H on all carriers configured using the applicable test configuration and corresponding power setting specified in clauses 4.7.4 and 4.8.

For an IAB declared to be capable of simultaneous transmission(see D.IAB-2 in table 4.6-1), set the IAB to simultaneously transmit according to IAB-DU-FR1-TM1.1 for IAB-DU type 1-H and IAB-MT-FR1-TM1.1 for IAB-MT type 1-H using the applicable test configuration and corresponding power setting specified in clauses 4.7.4 and 4.8.

6.6.2.4.2 Procedure

1) Measure the spectrum emission of the transmitted signal using at least the number of measurement points, and across a span, as listed in table 6.6.2.4.2-1. The selected resolution bandwidth (RBW) filter of the analyser shall be 30 kHz or less.

Table 6.6.2.4.2-1: Span and number of measurement points for OBW measurements

Bandwidth	IAB-DU channel bandwidth or IAB-MT channel bandwidth BW_Channel (MHz)				Aggregated IAB channel bandwidth BW_{Channel_CA}（MHz）
	10	15	20	> 20	> 20
Span (MHz)	20	30	40
Minimum number of measurement points	400	400	400

NOTE: The detection mode of the spectrum analyser will not have any effect on the result if the statistical properties of the out-of-OBW power are the same as those of the inside-OBW power. Both are expected to have the Rayleigh distribution of the amplitude of Gaussian noise. In any case where the statistics are not the same, though, the detection mode must be power responding. The analyser may be set to respond to the average of the power (root-mean-square of the voltage) across the measurement cell.

2) Compute the total of the power, P0, (in power units, not decibel units) of all the measurement cells in the measurement span. Compute P1, the power outside the occupied bandwidth on each side. P1 is half of the total power outside the bandwidth. P1 is half of (100 % – (occupied percentage)) of P0. For the occupied percentage of 99 %, P1 is 0.005 times P0.

3) Determine the lowest frequency, f1, for which the sum of all power in the measurement cells from the beginning of the span to f1 exceeds P1.

4) Determine the highest frequency, f2, for which the sum of all power in the measurement cells from f2 to the end of the span exceeds P1.

5) Compute the occupied bandwidth as f2 – f1.

In addition, for a multi-band capable IAB, the following step shall apply:

6) For multi-band capable IAB and single band tests, repeat the steps above per involved band where single carrier test models shall apply, with no carrier activated in the other band. In addition, when contiguous CA is supported, single band test configurations and test models shall apply with no carrier activated in the other band.

6.6.2.5 Test requirements

The occupied bandwidth for each carrier shall be less than the channel bandwidth as defined in TS 38.174 [2], table 5.3.5-1. For contiguous CA, the occupied bandwidth shall be less than or equal to the aggregated IAB channel bandwidth as defined in TS 38.174 [2], clause 5.3A.

6.6.3 Adjacent Channel Leakage Power Ratio

6.6.3.1 General

Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the filtered mean power centred on the assigned channel frequency to the filtered mean power centred on an adjacent channel frequency.

The requirements shall apply outside the IAB-DU RF Bandwidth, IAB-MT RF Bandwidth or Radio Bandwidth whatever the type of transmitter considered (single carrier or multi-carrier) and for all transmission modes foreseen by the manufacturer’s specification.

For an IAB- node operating in non-contiguous spectrum, the ACLR requirement in clause 6.6.3.2 shall apply in sub-block gaps for the frequency ranges defined in table 6.6.3.2-3, while the CACLR requirement in clause 6.6.3.2 shall apply in sub-block gaps for the frequency ranges defined in table 6.6.3.2-4.

For a multi-band connector, the ACLR requirement in clause 6.6.3.2 shall apply in Inter RF Bandwidth gaps for the frequency ranges defined in table 6.6.3.2-3, while the CACLR requirement in clause 6.6.3.2 shall apply in Inter RF Bandwidth gaps for the frequency ranges defined in table 6.6.3.2-4.

The requirement shall apply during the transmitter ON period.

6.6.3.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB type 1-H is defined in TS 38.174 [2], clause 6.6.3.

6.6.3.3 Test purpose

To verify that the adjacent channel leakage power ratio requirement shall be met as specified by the minimum requirement.

6.6.3.4 Method of test

6.6.3.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.9.1.

IAB RF Bandwidth positions to be tested for multi-carrier and/or CA:

– B_RFBW, M_RFBW and T_RFBW in single-band operation; see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBWin multi-band operation, see clause 4.9.1.

6.6.3.4.2 Procedure

For IAB type 1-H where there may be multiple TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1. If simultaneous transmission is declared to be supported (see D.IAB-2 in table 4.6-1), when IAB-MT and IAB-DU are transmitting simultaneously, the measurement may be tested on one connector at a time or may be tested in parallel as shown in annex D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the single-band connector or multi-band connector under test to measurement equipment as shown in annex D.1.1 for IAB type 1-H. All connectors not under test shall be terminated.

The measurement device characteristics shall be:

– Measurement filter bandwidth: defined in clause 6.6.3.5.

– Detection mode: true RMS voltage or true average power.

2) For a connectors declared to be capable of single carrier operation only (D.16), set the representative connectors under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding test models IAB-DU-FR1‑TM1.1 or IAB-MT-FR1-TM1.1 in clause 4.9.2 at rated carrier output power P_rated,c,TABC for IAB type 1-H (D.21).

3) Measure ACLR for the frequency offsets both side of channel frequency as specified in table 6.6.3.5.2‑1. In multiple carrier case only offset frequencies below the lowest and above the highest carrier frequency used shall be measured.

4) For the ACLR requirement applied inside sub-block gap for non-contiguous spectrum operation, or inside Inter RF Bandwidth gap for multi-band operation:

a) Measure ACLR inside sub-block gap or Inter RF Bandwidth gap as specified in clause 6.6.3.5.2, if applicable.

b) Measure CACLR inside sub-block gap or Inter RF Bandwidth gap as specified in clause 6.6.3.5.2, if applicable.

5) Repeat the test with the channel set-up according to IAB-DU-FR1-TM1.2 in clause 4.9.2.

In addition, for multi-band connectors, the following steps shall apply:

6.6.3.5 Test requirements

6.6.3.5.1 General requirements

The ACLR requirements in clause 6.6.3.5.2 shall apply as described in clauses 6.6.3.5.3 or 6.6.3.5.4.

6.6.3.5.2 Limits and basic limits

The ACLR is defined with a square filter of bandwidth equal to the transmission bandwidth configuration of the transmitted signal (BW_Config) centred on the assigned channel frequency and a filter centred on the adjacent channel frequency according to the tables below.

For operation in paired and unpaired spectrum, the ACLR shall be higher than the value specified in table 6.6.3.5.2‑1.

Table 6.6.3.5.2-1: IAB type 1-H ACLR limit

IAB-DU channel bandwidth and IAB-MT channel bandwidth of lowest/highest carrier transmitted BW_Channel (MHz)	IAB-DU and IAB-MT adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted	Assumed adjacent channel carrier (informative)	Filter on the adjacent channel frequency and corresponding filter bandwidth	ACLR limit
10, 15, 20	BW_Channel	NR of same BW (Note 2)	Square (BW_Config)	44.2
	2 x BW_Channel	NR of same BW (Note 2)	Square (BW_Config)	44.2
	BW_Channel/2 + 2.5 MHz	5 MHz E-UTRA	Square (4.5 MHz)	44.2 (Note 3)
	BW_Channel/2 + 7.5 MHz	5 MHz E-UTRA	Square (4.5 MHz)	44.2 (Note 3)
25, 30, 40, 50, 60, 70, 80, 90,100	BW_Channel	NR of same BW (Note 2)	Square (BW_Config)	43.8 dB
	2 x BW_Channel	NR of same BW (Note 2)	Square (BW_Config)	43.8 dB
	BW_Channel/2 + 2.5 MHz	5 MHz E-UTRA	Square (4.5 MHz)	43.8 dB (Note 3)
	BW_Channel/2 + 7.5 MHz	5 MHz E-UTRA	Square (4.5 MHz)	43.8 dB (Note 3)
NOTE 1: BW_Channel and BW_Config are the IAB-DU channel bandwidth and IAB-MT channel bandwidth and transmission bandwidth configuration of the lowest/highest carrier transmitted on the assigned channel frequency. NOTE 2: With SCS that provides largest transmission bandwidth configuration (BW_Config). NOTE 3: The requirements are applicable when the band is also defined for E-UTRA or UTRA.

The ACLR absolute basic limit is specified in table 6.6.3.5.2‑2.

Table 6.6.3.5.2-2: IAB type 1-H ACLR absolute basic limit

IAB-DU and IAB-MT category / class	ACLR absolute basic limit
Category A Wide Area IAB-DU and Category A Wide Area IAB-MT	-13 dBm/MHz
Category B Wide Area IAB-DU and Category B Wide Area IAB-MT	-15 dBm/MHz
Medium Range IAB-DU	-25 dBm/MHz
Local Area IAB-DU and Local Area IAB-MT	-32 dBm/MHz

For operation in non-contiguous spectrum or multiple bands, the ACLR shall be higher than the value specified in Table 6.6.3.5.2‑3.

Table 6.6.3.5.2-3: IAB type 1-H ACLR limit in non-contiguous spectrum or multiple bands

IAB-DU channel bandwidth and IAB-MT channel bandwidth of lowest/highest carrier transmitted BW_Channel (MHz)	Sub-block or Inter RF Bandwidth gap size (W_gap) where the limit applies (MHz)	IAB-DU and IAB-MT adjacent channel centre frequency offset below or above the sub-block or IAB RF Bandwidth edge (inside the gap)	Assumed adjacent channel carrier	Filter on the adjacent channel frequency and corresponding filter bandwidth	ACLR limit
10, 15, 20	W_gap ≥ 15 (Note 3) W_gap ≥ 45 (Note 4)	2.5 MHz	5 MHz NR (Note 2)	Square (BW_Config)	44.2 dB
	W_gap ≥ 20 (Note 3) W_gap ≥ 50 (Note 4)	7.5 MHz	5 MHz NR (Note 2)	Square (BW_Config)	44.2 dB
25, 30, 40, 50, 60, 70, 80, 90, 100	W_gap ≥ 60 (Note 4) W_gap ≥ 30 (Note 3)	10 MHz	20 MHz NR (Note 2)	Square (BW_Config)	43.8 dB
	W_gap ≥ 80 (Note 4) W_gap ≥ 50 (Note 3)	30 MHz	20 MHz NR (Note 2)	Square (BW_Config)	43.8 dB
NOTE 1: BW_Config is the transmission bandwidth configuration of the assumed adjacent channel carrier. NOTE 2: With SCS that provides largest transmission bandwidth configuration (BW_Config). NOTE 3: Applicable in case the IAB-DU channel bandwidth or IAB-MT channel bandwidth of the NR carrier transmitted at the other edge of the gap is 10, 15, 20 MHz. NOTE 4: Applicable in case the IAB-DU channel bandwidth or IAB-MT channel bandwidth of the NR carrier transmitted at the other edge of the gap is 25, 30, 40, 50, 60, 70, 80, 90, 100 MHz.

The Cumulative Adjacent Channel Leakage power Ratio (CACLR) in a sub-block gap or the Inter RF Bandwidth gap is the ratio of:

a) the sum of the filtered mean power centred on the assigned channel frequencies for the two carriers adjacent to each side of the sub-block gap or the Inter RF Bandwidth gap, and

b) the filtered mean power centred on a frequency channel adjacent to one of the respective sub-block edges or IAB RF Bandwidth edges.

The assumed filter for the adjacent channel frequency is defined in table 6.6.3.2-4 and the filters on the assigned channels are defined in table 6.6.3.2-6.

For operation in non-contiguous spectrum or multiple bands, the CACLR for NR carriers located on either side of the sub-block gap or the Inter RF Bandwidth gap shall be higher than the value specified in table 6.6.3.2-4.

Table 6.6.3.5.2-4: IAB type 1-H CACLR limit

IAB-DU channel bandwidth and IAB-MT channel bandwidth of lowest/highest carrier transmitted BW_Channel (MHz)	Sub-block or Inter RF Bandwidth gap size (W_gap) where the limit applies (MHz)	IAB-DU and IAB-MT adjacent channel centre frequency offset below or above the sub-block or IAB RF Bandwidth edge (inside the gap)	Assumed adjacent channel carrier	Filter on the adjacent channel frequency and corresponding filter bandwidth	CACLR limit
10, 15, 20	5 ≤W_gap< 15 (Note 3) 5 ≤W_gap< 45 (Note 4)	2.5 MHz	5 MHz NR (Note 2)	Square (BW_Config)	44.2 dB
	10 < W_gap< 20 (Note 3) 10 ≤W_gap< 50 (Note 4)	7.5 MHz	5 MHz NR (Note 2)	Square (BW_Config)	44.2 dB
25, 30, 40, 50, 60, 70, 80,90, 100	20 ≤W_gap< 60 (Note 4) 20 ≤W_gap< 30 (Note 3)	10 MHz	20 MHz NR (Note 2)	Square (BW_Config)	43.8 dB
	40 < W_gap< 80 (Note 4) 40 ≤W_gap< 50 (Note 3)	30 MHz	20 MHz NR (Note 2)	Square (BW_Config)	43.8 dB
NOTE 1: BW_Config is the transmission bandwidth configuration of the assumed adjacent channel carrier. NOTE 2: With SCS that provides largest transmission bandwidth configuration (BW_Config). NOTE 3: Applicable in case the IAB-DU channel bandwidth or IAB-MT channel bandwidth of the NR carrier transmitted at the other edge of the gap is 10, 15, 20 MHz. NOTE 4: Applicable in case the IAB-DU channel bandwidth or IAB-MT channel bandwidth of the NR carrier transmitted at the other edge of the gap is 25, 30, 40, 50, 60, 70, 80, 90, 100 MHz.

The CACLR absolute basic limit is specified in table 6.6.3.2‑5.

Table 6.6.3.2-5: IAB type 1-H CACLR absolute basic limit

IAB-DU and IAB-MT category / class	CACLR absolute basic limit
Category A Wide Area IAB-DU and Category A Wide Area IAB-MT	-13 dBm/MHz
Category B Wide Area IAB-DU and Category B Wide Area IAB-MT	-15 dBm/MHz
Medium Range IAB-DU	-25 dBm/MHz
Local Area IAB-DU and Local Area IAB-MT	-32 dBm/MHz

Table 6.6.3.5.2-6: Filter parameters for the assigned channel

RAT of the carrier adjacent to the sub-block or Inter RF Bandwidth gap	Filter on the assigned channel frequency and corresponding filter bandwidth
NR	NR of same BW with SCS that provides largest transmission bandwidth configuration

6.6.3.5.3 IAB type 1-H

The ACLR absolute basic limits in table 6.6.3.5.2-2+ X (where X = 10log₁₀(N_{TXU,countedpercell})) or the ACLR limits in table 6.6.3.5.2-1, or 6.6.3.5.2-3, whichever is less stringent, shall apply for each TAB connector TX min cell group.

The CACLR absolute basic limits in table 6.6.3.5.2-5 + X, (where X = 10log₁₀(N_{TXU,countedpercell})) or the CACLR limits in table 6.6.3.5.2-4, whichever is less stringent, shall apply for each TAB connector TX min cell group.

Conformance to the IAB type 1-H ACLR (CACLR) limit can be demonstrated by meeting at least one of the following criteria as determined by the manufacturer

1) The ratio of the sum of the filtered mean power measured on each TAB connector in the TAB connector TX min cell group at the assigned channel frequency to the sum of the filtered mean power measured on each TAB connector in the TAB connector TX min cell group at the adjacent channel frequency shall be greater than or equal to the ACLR (CACLR) limit of the IAB-MT or IAB-DU. This shall apply for each TAB connector TX min cell group.

2) The ratio of the filtered mean power at the TAB connector centred on the assigned channel frequency to the filtered mean power at this TAB connector centred on the adjacent channel frequency shall be greater than or equal to the ACLR (CACLR) limit of the IAB-MT or IAB-DU for every TAB connector in the TAB connector TX min cell group, for each TAB connector TX min cell group.

In case the ACLR (CACLR) absolute basic limit of IAB type 1-H are applied, the conformance can be demonstrated by meeting at least one of the following criteria as determined by the manufacturer:

1) The sum of the filtered mean power measured on each TAB connector in the TAB connector TX min cell group at the adjacent channel frequency shall be less than or equal to the ACLR (CACLR) absolute basic limit + X (where X = 10log₁₀(N_{TXU,countedpercell})) of the IAB-MT or IAB-DU. This shall apply to each TAB connector TX min cell group.

2) The filtered mean power at each TAB connector centred on the adjacent channel frequency shall be less than or equal to the ACLR (CACLR) absolute basic limit of the IAB-MT or IAB-DU scaled by X -10log₁₀(n) for every TAB connector in the TAB connector TX min cell group, for each TAB connector TX min cell group, where n is the number of TAB connectors in the TAB connector TX min cell group.

6.6.4 Operating band unwanted emissions

6.6.4.1 Definition and applicability

Unless otherwise stated, the operating band unwanted emission (OBUE) limits for IAB-DU in FR1 are defined from Δf_OBUE below the lowest frequency of each supported downlink operating band up to Δf_OBUE above the highest frequency of each supported downlink operating band. The values of Δf_OBUE are defined in table 6.6.1‑1 for the NR operating bands.

Unless otherwise stated, the operating band unwanted emission (OBUE) limits for IAB-MT in FR1 are defined from Δf_OBUE below the lowest frequency of each supported uplink operating band up to Δf_OBUE above the highest frequency of each supported uplink operating band. The values of Δf_OBUE are defined in table 6.6.1‑2 for the NR operating bands.

The requirements shall apply whatever the type of transmitter considered and for all transmission modes foreseen by the manufacturer’s specification. In addition, for IAB-DU and IAB-MT operating in non-contiguous spectrum, the requirements apply inside any sub-block gap. In addition, for a IAB-MT or IAB-DU operating in multiple bands, the requirements apply inside any Inter RF Bandwidth gap.

Basic limits are specified in the tables below, where:

– Δf is the separation between the channel edge frequency and the nominal -3dB point of the measuring filter closest to the carrier frequency.

– f_offset is the separation between the channel edge frequency and the centre of the measuring filter.

– f_offset_max is the offset to the frequency Δf_OBUE outside the downlink operating band of IAB-DU and uplink operating band of IAB-MT, where Δf_OBUE is defined in tables 6.6.1-1 and 6.6.1-2.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

For a multi-band connector inside any Inter RF Bandwidth gaps with W_gap < 2*Δf_OBUE, a combined basic limit shall be applied which is the cumulative sum of the basic limits specified at the IAB RF Bandwidth edges on each side of the Inter RF Bandwidth gap. The basic limit for IAB RF Bandwidth edge is specified in clauses 6.6.4.2.1 to 6.6.4.2.4 below, where in this case:

– Δf is the separation between the IAB RF Bandwidth edge frequency and the nominal -3 dB point of the measuring filter closest to the IAB RF Bandwidth edge.

– f_offset is the separation from the IAB RF Bandwidth edge frequency to the centre of the measuring filter.

– f_offset_max is equal to the Inter RF Bandwidth gap minus half of the bandwidth of the measuring filter.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

For a multi-band connector of IAB-DU, the operating band unwanted emission limits apply also in a supported downlink operating band without any carrier transmitted, in the case where there are carrier(s) transmitted in another supported downlink operating band. In this case, no cumulative basic limit is applied in the inter-band gap between a supported downlink operating band with carrier(s) transmitted and a supported downlink operating band without any carrier transmitted and

– In case the inter-band gap between a supported downlink operating band with carrier(s) transmitted and a supported downlink operating band without any carrier transmitted is less than 2*Δf_OBUE, f_offset_max shall be the offset to the frequency Δf_OBUE MHz outside the outermost edges of the two supported downlink operating bands and the operating band unwanted emission basic limits of the band where there are carriers transmitted, as defined in the tables of the present clause, shall apply across both downlink bands.

– In other cases, the operating band unwanted emission basic limits of the band where there are carriers transmitted, as defined in the tables of the present clause for the largest frequency offset (Δf_max), shall apply from Δf_OBUE MHz below the lowest frequency, up to Δf_OBUEMHz above the highest frequency of the supported downlink operating band without any carrier transmitted.

For a multi-band connector of IAB-MT, the operating band unwanted emission limits apply also in a supported uplink operating band without any carrier transmitted, in the case where there are carrier(s) transmitted in another supported uplink operating band. In this case, no cumulative basic limit is applied in the inter-band gap between a supported uplink operating band with carrier(s) transmitted and a supported uplink operating band without any carrier transmitted and

– In case the inter-band gap between a supported uplink operating band with carrier(s) transmitted and a supported uplink operating band without any carrier transmitted is less than 2* Δf_OBUE, f_offsetmax shall be the offset to the frequency Δf_OBUE MHz outside the outermost edges of the two supported uplink operating bands and the operating band unwanted emission basic limits of the band where there are carriers transmitted, as defined in the tables of the present clause, shall apply across both uplink bands.

– In other cases, the operating band unwanted emission basic limits of the band where there are carriers transmitted, as defined in the tables of the present clause for the largest frequency offset (Δfmax), shall apply from Δf_OBUE MHz below the lowest frequency, up to Δf_OBUE MHz above the highest frequency of the supported uplink operating band without any carrier transmitted.

For a multicarrier single-band connector or a single-band connector configured for intra-band contiguous or non-contiguous carrier aggregation the definitions above apply to the lower edge of the carrier transmitted at the lowest carrier frequency and the upper edge of the carrier transmitted at the highest carrier frequency within a specified frequency band.

In addition, inside any sub-block gap for a single-band connector operating in non-contiguous spectrum, a combined basic limit shall be applied which is the cumulative sum of the basic limits specified for the adjacent sub-blocks on each side of the sub-block gap. The basic limit for each sub-block is specified in clauses 6.6.4.2.1 to 6.6.4.2.4 below, where in this case:

– Δf is the separation between the sub-block edge frequency and the nominal -3 dB point of the measuring filter closest to the sub-block edge.

– f_offset is the separation between the sub-block edge frequency and the centre of the measuring filter.

– f_offset_max is equal to the sub-block gap bandwidth minus half of the bandwidth of the measuring filter.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

For Wide Area IAB-DU and Wide Area IAB-MT, the requirements of either clause 6.6.4.2.1 (Category A limits) or clause 6.6.4.2.2 (Category B limits) shall apply.

For Medium Range IAB-DU, the requirements in clause 6.6.4.2.3 shall apply (Category A and B).

For Local Area IAB-DU and Local Area IAB-MT, the requirements of clause 6.6.4.2.4 shall apply (Category A and B).

The application of either Category A or Category B basic limits shall be the same as for Transmitter spurious emissions in clause 6.6.5.

6.6.4.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB type 1-H are defined in TS 38.174 [2], clause 6.6.4.2.

6.6.4.3 Test purpose

This test measures the emissions close to the assigned channel bandwidth of the wanted signal, while the transmitter is in operation.

6.6.4.4 Method of test

6.6.4.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.9.1.

IAB RF Bandwidth positions to be tested for multi-carrier:

– B_RFBW, M_RFBW and T_RFBW in single-band operation; see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBWin multi-band operation, see clause 4.9.1.

6.6.4.4.2 Procedure

1) Connect the single-band connector or multi-band connector under test to measurement equipment as shown in annex D.1.1 for IAB type 1-H. All connectors not under test shall be terminated.

The measurement device characteristics shall be:

– Detection mode: True RMS.

2) For a connectors declared to be capable of single carrier operation only, set the representative connectors under test to transmit according to the applicable test configuration in clause 4.8 at rated carrier output power P_rated,c,TABC (D.21). Channel set-up shall be according to IAB-DU-FR1-TM1.1 or IAB-MT-FR1-TM1.1.

For a connector under test declared to be capable of multi-carrier and/or CA operation set the connector under test to transmit on all carriers configured using the applicable test configuration and corresponding power setting specified in clauses 4.7 and 4.8 using the corresponding test models or set of physical channels in clause 4.9.2.

3) Step the centre frequency of the measurement filter in contiguous steps and measure the emission within the specified frequency ranges with the specified measurement bandwidth. For connector under test declared to operate in multiple bands or non-contiguous spectrum, the emission within the Inter RF Bandwidth or sub-block gap shall be measured using the specified measurement bandwidth from the closest RF Bandwidth or sub block edge.

4) Repeat the test for the remaining test cases, with the channel set-up according to IAB-DU-FR1-TM1.2.

In addition, for multi-band connectors, the following steps shall apply:

5) For a multi-band connectors and single band tests, repeat the steps above per involved operating band where single band test configurations and test models shall apply with no carrier activated in the other operating band.

6.6.4.5 Test requirements

6.6.4.5.1 General requirements

6.6.4.5.2 Basic limits for Wide Area IAB-DU and IAB-MT (Category A)

For IAB-DU and IAB-MT operating in Bands n41 basic limits are specified in table 6.6.4.2.1-1:

Table 6.6.4.2.1-1: Wide Area IAB-DU and Wide Area IAB-MT operating band unwanted emission limits
(1GHz < NR bands ≤ 3GHz) for Category A

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limits (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-12.5 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.5 MHz ≤ f_offset < f_offset_max	-13 dBm (Note 3)	1MHz
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band, the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be ‑13 dBm/1 MHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or RF Bandwidth. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

For IAB-DU and IAB-MT operating in Bands n77, n78 and n79 basic limits are specified in table 6.6.4.2.1-2:

Table 6.6.4.2.1-2: Wide Area IAB-DU and Wide Area IAB-MT operating band unwanted emission limits
(NR bands >3GHz) for Category A

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limit (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-12.2 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.5 MHz ≤ f_offset < f_offset_max	-13 dBm (Note 3)	1MHz
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band, the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be ‑13 dBm/1 MHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or RF Bandwidth. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

6.6.4.5.3 Basic limits for Wide Area IAB-DU and Wide Area IAB-MT (Category B)

6.6.4.5.3.1 General

For Category B Operating band unwanted emissions, the basic limits in clause 6.6.4.5.3.2 shall be applied.

6.6.4.5.3.2 Category B requirements

For IAB-DU and IAB-MT operating in Bands n41 basic limits are specified in table 6.6.4.5.3.2-1:

Table 6.6.4.5.3.2-1: Wide Area IAB-DU and IAB-MT operating band unwanted emission limits
(1GHz < NR bands ≤ 3GHz) for Category B

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limits (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-12.5 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.5 MHz ≤ f_offset < f_offset_max	-15 dBm (Note 3)	1 MHz
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band, the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 10 MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be ‑15 dBm/1 MHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or RF Bandwidth. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

For IAB-DU and IAB-MT operating in Bands n77, n78 and n79 basic limits are specified in table 6.6.4.5.3.2-2:

Table 6.6.4.5.3.2-2: Wide Area IAB-DU and Wide Area IAB-MT operating band unwanted emission limits (NR bands >3GHz) for Category B

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limit (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-12.2 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.5 MHz ≤ f_offset < f_offset_max	-15 dBm (Note 3)	1MHz
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band, the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 10 MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be ‑15 dBm/1 MHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or RF Bandwidth. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

6.6.4.5.4 Basic limits for Medium Range IAB-DU (Category A and B)

For Medium Range IAB-DU, basic limits are specified in table 6.6.4.5.4-1 to table 6.6.4.5.4-4.

For the tables in this clause for IAB type 1-H P_rated,x = P_rated,c,cell – 10*log₁₀(N_{TXU,countedpercell}),

Table 6.6.4.5.4-1: Medium Range IAB-DU operating band unwanted emission limits, 31< P_rated,x ≤ 38 dBm (NR bands ≤ 3 GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limits (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	P_rated,x – 58.5dB	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	Min(P_rated,x – 60dB, -25dBm) (Note 3)	100 kHz
NOTE 1: For an IAB-DU supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be Min(P_rated,x -60dB, ‑25dBm)/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

Table 6.6.4.5.4-2: Medium Range IAB-DU operating band unwanted emission limits, P_rated,x ≤ 31 dBm (NR bands ≤ 3 GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limits (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-27.5 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	-29 dBm (Note 3)	100 kHz
NOTE 1: For an IAB-DU supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be -29dBm/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

Table 6.6.4.5.4-3: Medium Range IAB-DU operating band unwanted emission limits, 31< P_rated,x ≤ 38 dBm (NR bands >3GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limit (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	P_rated,x– 58.2dB	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	Min(P_rated,x – 60dB, -25dBm) (Note 3)	100 kHz
NOTE 1: For an IAB-DU supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be -29dBm/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

Table 6.6.4.5.4-4: Medium Range IAB-DU operating band unwanted emission limits, P_rated,x ≤ 31 dBm (NR bands >3GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limit (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-27.2 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	-29 dBm (Note 3)	100 kHz
NOTE 1: For an IAB-DU supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be -29dBm/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap. NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

6.6.4.5.5 Basic limits for Local Area IAB-DU and Local Area IAB-MT (Category A and B)

For Local Area IAB-DU and Local Area IAB-MT in NR bands ≤ 3 GHz, basic limits are specified in table 6.6.4.5.4-1.

For Local Area IAB-DU and Local Area IAB-MT in NR bands ≤ 3 GHz, basic limits are specified in table 6.6.4.5.4-2.

Table 6.6.4.5.4-1: Local Area IAB-DU and Local Area IAB-MT operating band unwanted emission limits (NR bands ≤3GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limits (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz		100 kHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-35.5 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	-37 dBm (Note 10)	100 kHz
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be -37dBm/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

Table 6.6.4.5.4-2: Local Area IAB-DU and Local Area IAB-MT operating band unwanted emission limits (NR bands >3GHz)

Frequency offset of measurement filter ‑3dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Basic limit (Note 1, 2)	Measurement bandwidth
0 MHz ≤ Δf < 5 MHz	0.05 MHz ≤ f_offset < 5.05 MHz
5 MHz ≤ Δf < min(10 MHz, Δf_max)	5.05 MHz ≤ f_offset < min(10.05 MHz, f_offset_max)	-35.2 dBm	100 kHz
10 MHz ≤ Δf ≤ Δf_max	10.05 MHz ≤ f_offset < f_offset_max	-37 dBm (Note 3)
NOTE 1: For an IAB-DU and IAB-MT supporting non-contiguous spectrum operation within any operating band the emission limits within sub-block gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks on each side of the sub-block gap. Exception is f ≥ 10MHz from both adjacent sub-blocks on each side of the sub-block gap, where the emission limits within sub-block gaps shall be -37dBm/100kHz. NOTE 2: For a multi-band connector with Inter RF Bandwidth gap < 2Δf_OBUE the emission limits within the Inter RF Bandwidth gaps* is calculated as a cumulative sum of contributions from adjacent sub-blocks or RF Bandwidth on each side of the Inter RF Bandwidth gap NOTE 3: The requirement is not applicable when Δf_max < 10 MHz.

6.6.4.5.5 Basic limits for additional requirements

6.6.4.5.5.1 Limits in FCC Title 47

In addition to the requirements in clauses 6.6.4.2.1, 6.6.4.2.2, 6.6.4.2.3 and 6.6.4.2.4, the IAB-DU and IAB-MT may have to comply with the applicable emission limits established by FCC Title 47 [7], when deployed in regions where those limits are applied, and under the conditions declared by the manufacturer.

6.6.4.5.6 IAB type 1-H

The operating band unwanted emissions requirements for IAB type 1-H are that for each TAB connector TX min cell group and each applicable basic limit in clause 6.6.4.2, the power summation emissions at the TAB connectors of the TAB connector TX min cell group shall not exceed a limit specified as the basic limit + X, where X = 10log₁₀(N_{TXU,countedpercell}).

NOTE: Conformance to the IAB type 1-H operating band unwanted emission requirement can be demonstrated by meeting at least one of the following criteria as determined by the manufacturer:

1) The sum of the emissions power measured on each TAB connector in the TAB connector TX min cell group shall be less than or equal to the limit as defined in this clause for the respective frequency span.

2) The unwanted emissions power at each TAB connector shall be less than or equal to the type 1-H limit as defined in this clause for the respective frequency span, scaled by -10log₁₀(n), where n is the number of TAB connectors in the TAB connector TX min cell group.

6.6.5 Transmitter spurious emissions

6.6.5.1 Definition and applicability

For IAB-DU, the transmitter spurious emission limits shall apply from 9 kHz to 12.75 GHz, excluding the frequency range from Δf_OBUE below the lowest frequency of each supported downlink operating band, up to Δf_OBUE above the highest frequency of each supported downlink operating band, where the Δf_OBUE is defined in table 6.6.1-1. For some operating bands, the upper limit is higher than 12.75 GHz in order to comply with the 5^th harmonic limit of the downlink operating band, as specified in Recommendation ITU-R SM.329 [5].

For IAB-MT, the transmitter spurious emission limits shall apply from 9 kHz to 12.75 GHz, excluding the frequency range from Δf_OBUE below the lowest frequency of each supported uplink operating band, up to Δf_OBUE above the highest frequency of each supported uplink operating band, where the Δf_OBUE is defined in table 6.6.1-2. For some operating bands, the upper limit is higher than 12.75 GHz in order to comply with the 5^th harmonic limit of the uplink operating band, as specified in Recommendation ITU-R SM.329 [5].

For a multi-band connector, for each supported operating band together with Δf_OBUE around the band is excluded from the transmitter spurious emissions requirement.

The requirements shall apply whatever the type of transmitter considered (single carrier or multi-carrier). It applies for all transmission modes foreseen by the manufacturer’s specification.

Unless otherwise stated, all requirements are measured as mean power (RMS).

6.6.5.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB type 1-H are defined in TS 38.174 [2], clause 6.6.5.

6.6.5.3 Test purpose

This test measures conducted spurious emissions while the transmitter is in operation.

6.6.5.4 Method of test

6.6.5.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier:

– B when testing the spurious emissions below F_{DL_low} – Δf_OBUEfor IAB-DU or F_{UL_low} – Δf_OBUEfor IAB-MT_,

– T when testing the spurious emissions above F_{DL_high} + Δf_OBUEfor IAB-DU or F_{UL_high} + Δf_OBUEfor IAB-MT; see clause 4.9.1.

IAB RF Bandwidth positions to be tested for multi-carrier and/or CA:

– B_RFBW when testing the spurious frequencies below F_{DL_low} – Δf_OBUEfor IAB-DU or F_{UL_low} – Δf_OBUEfor IAB-MT; T_RFBW when testing the spurious frequencies above F_{DL_high} + Δf_OBUEfor IAB-DU or F_{UL_high} + Δf_OBUEfor IAB-MT in single-band operation; see clause 4.9.1.

– B_RFBW_T’_RFBW when testing the spurious frequencies below F_{DL_low} – Δf_OBUEfor IAB-DU or F_{UL_low} – Δf_OBUEfor IAB-MT of the lowest operating band; B’_RFBW_T_RFBWwhen testing the spurious frequencies above F_{DL_high} + Δf_OBUEfor IAB-DU or F_{UL_high} + Δf_OBUEfor IAB-MT of the highest operating band in multi-band operation, see clause 4.9.1.

6.6.5.4.2 Procedure

For IAB type 1-H where there may be multiple TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.13.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the single-band connector or multi-band connector under test to measurement equipment as shown in annex D.1.1. All connectors not under test shall be terminated.

2) Measurements shall use a measurement bandwidth in accordance to the conditions in clause 6.6.5.5.

The measurement device characteristics shall be:

– Detection mode: True RMS.

3) For a connectors declared to be capable of single carrier operation only (D.16), set the representative connectors under test to transmit according to the applicable test configuration in clause 4.8 at rated carrier output power (P_rated,c,AC, or P_rated,c,TABC, D.21). Channel set-up shall be according to IAB-DU-FR1‑TM1.1 or IAB-MT-FR1-TM1.1.

4) Measure the emission at the specified frequencies with specified measurement bandwidth.

In addition, for multi-band connectors, the following steps shall apply:

6.6.5.5 Test requirements

6.6.5.5.1 Basic limits

6.6.5.5.1.1 Tx spurious emissions

The basic limits of either table 6.6.5.5.1.1-1 (Category A limits) or table 6.6.5.5.1.1-2 (Category B limits) shall apply. The application of either Category A or Category B limits shall be the same as for operating band unwanted emissions in clause 6.6.4.

Table 6.6.5.5.1.1-1: General IAB-DU and IAB-MT transmitter spurious emission limits in FR1, Category A

Spurious frequency range	Basic limit	Measurement bandwidth	Notes
9 kHz – 150 kHz	-13 dBm	1 kHz	Note 1, Note 4
150 kHz – 30 MHz		10 kHz	Note 1, Note 4
30 MHz – 1 GHz		100 kHz	Note 1
1 GHz 12.75 GHz		1 MHz	Note 1, Note 2
12.75 GHz – 5^th harmonic of the upper frequency edge of the DL operating band in GHz		1 MHz	Note 1, Note 2, Note 3
NOTE 1: Measurement bandwidths as in ITU-R SM.329 [5], s4.1. NOTE 2: Upper frequency as in ITU-R SM.329 [5], s2.5 table 1. NOTE 3: For IAB-DU, this spurious frequency range applies only for operating bands for which the 5^th harmonic of the upper frequency edge of the DL operating band is reaching beyond 12.75 GHz. For IAB-MT, this spurious frequency range applies only for operating bands for which the 5^th harmonic of the upper frequency edge of the UL operating band is reaching beyond 12.75 GHz. NOTE 4: This spurious frequency range applies only to IAB type 1-H.

Table 6.6.5.5.1.1-2: General IAB-DU and IAB-MT transmitter spurious emission limits in FR1, Category B

Spurious frequency range	Basic limit	Measurement bandwidth	Notes
9 kHz – 150 kHz	-36 dBm	1 kHz	Note 1, Note 4
150 kHz – 30 MHz		10 kHz	Note 1, Note 4
30 MHz – 1 GHz		100 kHz	Note 1
1 GHz – 12.75 GHz	-30 dBm	1 MHz	Note 1, Note 2
12.75 GHz – 5^th harmonic of the upper frequency edge of the DL operating band in GHz		1 MHz	Note 1, Note 2, Note 3
NOTE 1: Measurement bandwidths as in ITU-R SM.329 [5], s4.1. NOTE 2: Upper frequency as in ITU-R SM.329 [5], s2.5 table 1. NOTE 3: For IAB-DU, this spurious frequency range applies only for operating bands for which the 5^th harmonic of the upper frequency edge of the DL operating band is reaching beyond 12.75 GHz. For IAB-MT, this spurious frequency range applies only for operating bands for which the 5^th harmonic of the upper frequency edge of the UL operating band is reaching beyond 12.75 GHz. NOTE 4: This spurious frequency range applies only to IAB type 1-H.

6.6.5.5.2 Additional spurious emissions requirements

These requirements may be applied for the protection of system operating in other frequency ranges. The limits may apply as an optional protection of such systems that are deployed in the same geographical area as the IAB-node, or they may be set by local or regional regulation as a mandatory requirement for an NR operating band. It is in some cases not stated in the present document whether a requirement is mandatory or under what exact circumstances that a limit applies, since this is set by local or regional regulation. An overview of regional requirements in the present document is given in clause 4.5.

Some requirements may apply for the protection of specific equipment (UE, MS and/or BS) or equipment operating in specific systems (GSM, CDMA, UTRA, E-UTRA, NR, etc.) as listed below.

The spurious emission basic limits are provided in table 6.6.5.5.2-1 where requirements for co-existence with the system listed in the first column apply for IAB-MT and IAB-DU. For a multi-band connector, the exclusions and conditions in the Note column of table 6.6.5.5.2-1 apply for each supported operating band.

Table 6.6.5.5.2-1: IAB-DU and IAB-MT spurious emissions basic limits for co-existence with systems operating in other frequency bands

System type to co-exist with	Frequency range for co-existence requirement	Basic limits	Measurement bandwidth	Note
GSM900	921 – 960 MHz	-57 dBm	100 kHz
	876 – 915 MHz	-61 dBm	100 kHz
DCS1800	1805 – 1880 MHz	-47 dBm	100 kHz
	1710 – 1785 MHz	-61 dBm	100 kHz
PCS1900	1930 – 1990 MHz	-47 dBm	100 kHz
	1850 – 1910 MHz	-61 dBm	100 kHz
GSM850 or	869 – 894 MHz	-57 dBm	100 kHz
CDMA850	824 – 849 MHz	-61 dBm	100 kHz
UTRA FDD	2110 – 2170 MHz	-52 dBm	1 MHz
Band I or E-UTRA Band 1 or NR Band n1	1920 – 1980 MHz	-49 dBm	1 MHz
UTRA FDD	1930 – 1990 MHz	-52 dBm	1 MHz
Band II or E-UTRA Band 2 or NR Band n2	1850 – 1910 MHz	-49 dBm	1 MHz
UTRA FDD	1805 – 1880 MHz	-52 dBm	1 MHz
Band III or E-UTRA Band 3 or NR Band n3	1710 – 1785 MHz	-49 dBm	1 MHz
UTRA FDD Band IV or E-UTRA Band 4	2110 – 2155 MHz	-52 dBm	1 MHz
	1710 – 1755 MHz	-49 dBm	1 MHz
UTRA FDD Band V or E-UTRA Band 5 or NR Band n5	869 – 894 MHz	-52 dBm	1 MHz
	824 – 849 MHz	-49 dBm	1 MHz
UTRA FDD	860 – 890 MHz	-52 dBm	1 MHz
Band VI, XIX or	815 – 830 MHz	-49 dBm	1 MHz
E-UTRA Band 6, 18, 19 or NR Band n18	830 – 845 MHz	-49 dBm	1 MHz
UTRA FDD Band VII or E-UTRA Band 7 or NR Band n7	2620 – 2690 MHz	-52 dBm	1 MHz
	2500 – 2570 MHz	-49 dBm	1 MHz
UTRA FDD Band VIII or E-UTRA Band 8 or NR Band n8	925 – 960 MHz	-52 dBm	1 MHz
	880 – 915 MHz	-49 dBm	1 MHz
UTRA FDD Band IX or E-UTRA Band 9	1844.9 – 1879.9 MHz	-52 dBm	1 MHz
	1749.9 – 1784.9 MHz	-49 dBm	1 MHz
UTRA FDD Band X or E-UTRA Band 10	2110 – 2170 MHz	-52 dBm	1 MHz
	1710 – 1770 MHz	-49 dBm	1 MHz
UTRA FDD Band XI or XXI or E-UTRA Band 11 or 21	1475.9 – 1510.9 MHz	-52 dBm	1 MHz
	1427.9 – 1447.9 MHz	-49 dBm	1 MHz
	1447.9 – 1462.9 MHz	-49 dBm	1 MHz
UTRA FDD Band XII or E-UTRA Band 12 or NR Band n12	729 – 746 MHz	-52 dBm	1 MHz
	699 – 716 MHz	-49 dBm	1 MHz
UTRA FDD Band XIII or E-UTRA Band 13	746 – 756 MHz	-52 dBm	1 MHz
	777 – 787 MHz	-49 dBm	1 MHz
UTRA FDD Band XIV or E-UTRA Band 14 or NR band n14	758 – 768 MHz	-52 dBm	1 MHz
	788 – 798 MHz	-49 dBm	1 MHz
E-UTRA Band 17	734 – 746 MHz	-52 dBm	1 MHz
	704 – 716 MHz	-49 dBm	1 MHz
UTRA FDD Band XX or E-UTRA Band 20 or NR Band n20	791 – 821 MHz	-52 dBm	1 MHz
	832 – 862 MHz	-49 dBm	1 MHz
UTRA FDD Band XXII or E-UTRA Band 22	3510 – 3590 MHz	-52 dBm	1 MHz	This requirement does not apply to IAB-DU and IAB-MT operating in band n77 or n78.
	3410 – 3490 MHz	-49 dBm	1 MHz	This requirement does not apply to IAB-DU and IAB-MT operating in band n77 or n78.
E-UTRA Band 24	1525 – 1559 MHz	-52 dBm	1 MHz
	1626.5 – 1660.5 MHz	-49 dBm	1 MHz
UTRA FDD Band XXV or E-UTRA Band 25 or NR band n25	1930 – 1995 MHz	-52 dBm	1 MHz
	1850 – 1915 MHz	-49 dBm	1 MHz
UTRA FDD Band XXVI or E-UTRA Band 26 or NR Band n26	859 – 894 MHz	-52 dBm	1 MHz
	814 – 849 MHz	-49 dBm	1 MHz
E-UTRA Band 27	852 – 869 MHz	-52 dBm	1 MHz
	807 – 824 MHz	-49 dBm	1 MHz
E-UTRA Band 28 or NR Band n28	758 – 803 MHz	-52 dBm	1 MHz
	703 – 748 MHz	-49 dBm	1 MHz
E-UTRA Band 29 or NR Band n29	717 – 728 MHz	-52 dBm	1 MHz
E-UTRA Band 30 or NR Band n30	2350 – 2360 MHz	-52 dBm	1 MHz
	2305 – 2315 MHz	-49 dBm	1 MHz
E-UTRA Band 31	462.5 – 467.5 MHz	-52 dBm	1 MHz
	452.5 – 457.5 MHz	-49 dBm	1 MHz
UTRA FDD band XXXII or E-UTRA band 32	1452 – 1496 MHz	-52 dBm	1 MHz
UTRA TDD Band a) or E-UTRA Band 33	1900 – 1920 MHz	-52 dBm	1 MHz
UTRA TDD Band a) or E-UTRA Band 34 or NR band n34	2010 – 2025 MHz	-52 dBm	1 MHz
UTRA TDD Band b) or E-UTRA Band 35	1850 – 1910 MHz	-52 dBm	1 MHz
UTRA TDD Band b) or E-UTRA Band 36	1930 – 1990 MHz	-52 dBm	1 MHz
UTRA TDD Band c) or E-UTRA Band 37	1910 – 1930 MHz	-52 dBm	1 MHz
UTRA TDD Band d) or E-UTRA Band 38 or NR Band n38	2570 – 2620 MHz	-52 dBm	1 MHz
UTRA TDD Band f) or E-UTRA Band 39 or NR band n39	1880 – 1920 MHz	-52 dBm	1 MHz
UTRA TDD Band e) or E-UTRA Band 40 or NR Band n40	2300 – 2400 MHz	-52 dBm	1 MHz
E-UTRA Band 41 or NR Band n41, n90	2496 – 2690 MHz	-52 dBm	1 MHz	This is not applicable IAB-DU and IAB-MT operating in Band n41.
E-UTRA Band 42	3400 – 3600 MHz	-52 dBm	1 MHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78.
E-UTRA Band 43	3600 – 3800 MHz	-52 dBm	1 MHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78.
E-UTRA Band 44	703 – 803 MHz	-52 dBm	1 MHz
E-UTRA Band 45	1447 – 1467 MHz	-52 dBm	1 MHz
E-UTRA Band 46 or NR Band n46	5150 – 5925 MHz	-52 dBm	1 MHz
E-UTRA Band 47	5855 – 5925 MHz	-52 dBm	1 MHz
E-UTRA Band 48 or NR Band n48	3550 – 3700 MHz	-52 dBm	1 MHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78.
E-UTRA Band 50 or NR band n50	1432 – 1517 MHz	-52 dBm	1 MHz
E-UTRA Band 51 or NR Band n51	1427 – 1432 MHz	-52 dBm	1 MHz
E-UTRA Band 53 or NR Band n53	2483.5 – 2495 MHz	-52 dBm	1 MHz	This is not applicable to IAB-DU and IAB-MT operating in Band n41.
E-UTRA Band 65 or NR Band n65	2110 – 2200 MHz	-52 dBm	1 MHz
	1920 – 2010 MHz	-49 dBm	1 MHz
E-UTRA Band 66 or NR Band n66	2110 – 2200 MHz	-52 dBm	1 MHz
	1710 – 1780 MHz	-49 dBm	1 MHz
E-UTRA Band 67	738 – 758 MHz	-52 dBm	1 MHz
E-UTRA Band 68	753 -783 MHz	-52 dBm	1 MHz
	698-728 MHz	-49 dBm	1 MHz
E-UTRA Band 69	2570 – 2620 MHz	-52 dBm	1 MHz
E-UTRA Band 70 or NR Band n70	1995 – 2020 MHz	-52 dBm	1 MHz
	1695 – 1710 MHz	-49 dBm	1 MHz
E-UTRA Band 71 or NR Band n71	617 – 652 MHz	-52 dBm	1 MHz
	663 – 698 MHz	-49 dBm	1 MHz
E-UTRA Band 72	461 – 466 MHz	-52 dBm	1 MHz
	451 – 456 MHz	-49 dBm	1 MHz
E-UTRA Band 74 or NR Band n74	1475 – 1518 MHz	-52 dBm	1 MHz
	1427 – 1470 MHz	-49 dBm	1MHz
E-UTRA Band 75 or NR Band n75	1432 – 1517 MHz	-52 dBm	1 MHz
E-UTRA Band 76 or NR Band n76	1427 – 1432 MHz	-52 dBm	1 MHz
NR Band n77	3.3 – 4.2 GHz	-52 dBm	1 MHz	This requirement does not apply to IAB-DU and IAB-MT operating in Band n77 or n78
NR Band n78	3.3 – 3.8 GHz	-52 dBm	1 MHz	This requirement does not apply to IAB-DU and IAB-MT operating in Band n77 or n78
NR Band n79	4.4 – 5.0 GHz	-52 dBm	1 MHz	This requirement does not apply to IAB-DU and IAB-MT operating in Band n79
NR Band n80	1710 – 1785 MHz	-49 dBm	1 MHz
NR Band n81	880 – 915 MHz	-49 dBm	1 MHz
NR Band n82	832 – 862 MHz	-49 dBm	1 MHz
NR Band n83	703 – 748 MHz	-49 dBm	1 MHz
NR Band n84	1920 – 1980 MHz	-49 dBm	1 MHz
E-UTRA Band 85 or NR Band n85	728 – 746 MHz	-52 dBm	1 MHz
	698 – 716 MHz	-49 dBm	1 MHz
NR Band n86	1710 – 1780 MHz	-49 dBm	1 MHz
NR Band n89	824 – 849 MHz	-49 dBm	1 MHz
NR Band n91	1427 – 1432 MHz	-52 dBm	1 MHz
	832 – 862 MHz	-49 dBm	1 MHz
NR Band n92	1432 – 1517 MHz	-52 dBm	1 MHz
	832 – 862 MHz	-49 dBm	1 MHz
NR Band n93	1427 – 1432 MHz	-52 dBm	1 MHz
	880 – 915 MHz	-49 dBm	1 MHz
NR Band n94	1432 – 1517 MHz	-52 dBm	1 MHz
	880 – 915 MHz	-49 dBm	1 MHz
NR Band n95	2010 – 2025 MHz	-52 dBm	1 MHz
NR Band n96	5925 – 7125 MHz	-52 dBm	1 MHz
NR Band n97	2300 – 2400MHz	-52 dBm	1 MHz
NR Band n98	1880 – 1920MHz	-52 dBm	1 MHz
NR Band n99	1626.5 – 1660.5 MHz	-49 dBm	1 MHz
NR Band n101	1900 – 1910 MHz	-52 dBm	1 MHz
NR Band n102	5925 – 6425 MHz	-52 dBm	1 MHz
E-UTRA Band 103	757 – 758 MHz	-52 dBm	1 MHz
	787 – 788 MHz	-49 dBm	1 MHz
NR Band n104	6425 – 7125 MHz	-52 dBm	1 MHz

NOTE 1: As defined in the scope for spurious emissions in this clause the co-existence requirements in table 6.6.5.2.2-1 do not apply for the Δf_OBUE frequency range immediately outside the downlink operating band (see table 5.2-1). Emission limits for this excluded frequency range may be covered by local or regional requirements.

NOTE 2: Table 6.6.5.2.2-1 assumes that two operating bands, where the frequency ranges in table 5.2-1 would be overlapping, are not deployed in the same geographical area. For such a case of operation with overlapping frequency arrangements in the same geographical area, special co-existence requirements may apply that are not covered by the 3GPP specifications.

6.6.5.5.3 Co-location with base stations and IAB-nodes

These requirements may be applied for the protection of other BS, IAB-DU or IAB-MT receivers when GSM900, DCS1800, PCS1900, GSM850, CDMA850, UTRA FDD, UTRA TDD, E-UTRA, NR BS, IAB-DU or IAB-MT are co-located with IAB-MT and/or IAB-DU.

The requirements assume a 30 dB coupling loss between transmitter and receiver and are based on co-location with same class.

The basic limits are in table 6.6.5.2.3-1 for an IAB-DU and IAB-MT. Requirements for co-location with a system listed in the first column apply, depending on the declared IAB-DU and IAB-MT class. For a multi-band connector, the exclusions and conditions in the Note column of table 6.6.5.2.3-1 shall apply for each supported operating band.

Table 6.6.5.5.3-1: IAB-DU and IAB-MT spurious emissions basic limits for co-location with BS or IAB-node

Co-located system	Frequency range for	Basic limits			Measurement	Note
	co-location requirement	WA IAB-DU and WA IAB-MT	MR IAB-DU	LA IAB-DU and LA IAB-MT	bandwidth
GSM900	876 – 915 MHz	-98 dBm	-91 dBm	-70 dBm	100 kHz
DCS1800	1710 – 1785 MHz	-98 dBm	-91 dBm	-80 dBm	100 kHz
PCS1900	1850 – 1910 MHz	-98 dBm	-91 dBm	-80 dBm	100 kHz
GSM850 or CDMA850	824 – 849 MHz	-98 dBm	-91 dBm	-70 dBm	100 kHz
UTRA FDD Band I or E-UTRA Band 1 or NR Band n1	1920 – 1980 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band II or E-UTRA Band 2 or NR Band n2	1850 – 1910 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band III or E-UTRA Band 3 or NR Band n3	1710 – 1785 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band IV or E-UTRA Band 4	1710 – 1755 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band V or E-UTRA Band 5 or NR Band n5	824 – 849 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band VI, XIX or E-UTRA Band 6, 19	830 – 845 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band VII or E-UTRA Band 7 or NR Band n7	2500 – 2570 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band VIII or E-UTRA Band 8 or NR Band n8	880 – 915 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band IX or E-UTRA Band 9	1749.9 – 1784.9 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band X or E-UTRA Band 10	1710 – 1770 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XI or E-UTRA Band 11	1427.9 –1447.9 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XII or E-UTRA Band 12 or NR Band n12	699 – 716 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XIII or E-UTRA Band 13	777 – 787 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XIV or E-UTRA Band 14 or NR Band n14	788 – 798 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 17	704 – 716 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 18 or NR Band n18	815 – 830 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XX or E-UTRA Band 20 or NR Band n20	832 – 862 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XXI or E-UTRA Band 21	1447.9 – 1462.9 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XXII or E-UTRA Band 22	3410 – 3490 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
E-UTRA Band 23	2000 – 2020 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 24	1626.5 – 1660.5 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XXV or E-UTRA Band 25 or NR Band n25	1850 – 1915 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA FDD Band XXVI or E-UTRA Band 26 or NR Band n26	814 – 849 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 27	807 – 824 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 28 or NR Band n28	703 – 748 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 30 or NR Band n30	2305 – 2315 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 31	452.5 – 457.5 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band a) or E-UTRA Band 33	1900 – 1920 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band a) or E-UTRA Band 34 or NR band n34	2010 – 2025 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band b) or E-UTRA Band 35	1850 – 1910 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band b) or E-UTRA Band 36	1930 – 1990 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band c) or E-UTRA Band 37	1910 – 1930 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band d) or E-UTRA Band 38 or NR Band n38	2570 – 2620 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band f) or E-UTRA Band 39 or NR band n39	1880 – 1920MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
UTRA TDD Band e) or E-UTRA Band 40 or NR Band n40	2300 – 2400MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 41 or NR Band n41, n90	2496 – 2690 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n41
E-UTRA Band 42	3400 – 3600 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
E-UTRA Band 43	3600 – 3800 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
E-UTRA Band 44	703 – 803 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 45	1447 – 1467 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 46 or NR Band n46	5150 – 5925 MHz	N/A	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 48 or NR Band n48	3550 – 3700 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
E-UTRA Band 50 or NR Band n50	1432 – 1517 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 51 or NR Band n51	1427 – 1432 MHz	N/A	N/A	-88 dBm	100 kHz
E-UTRA Band 53 or NR Band n53	2483.5 – 2495 MHz	N/A	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n41
E-UTRA Band 65 or NR Band n65	1920 – 2010 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 66 or NR Band n66	1710 – 1780 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 68	698 – 728 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 70 or NR Band n70	1695 – 1710 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 71 or NR Band n71	663 – 698 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 72	451 – 456 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 74 or NR Band n74	1427 – 1470 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n77	3.3 – 4.2 GHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
NR Band n78	3.3 – 3.8 GHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n77 or n78
NR Band n79	4.4 – 5.0 GHz	-96 dBm	-91 dBm	-88 dBm	100 kHz	This is not applicable to IAB-DU and IAB-MT operating in Band n79
NR Band n80	1710 – 1785 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n81	880 – 915 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n82	832 – 862 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n83	703 – 748 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n84	1920 – 1980 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
E-UTRA Band 85 or NR Band 85	698 – 716 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n86	1710 – 1780 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n89	824 – 849 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n91	832 – 862 MHz	N/A	N/A	-88 dBm	100 kHz
NR Band n92	832 – 862 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n93	880 – 915 MHz	N/A	N/A	-88 dBm	100 kHz
NR Band n94	880 – 915 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n95	2010 – 2025 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n96	5925 – 7125 MHz	N/A	-90 dBm	-87 dBm	100 kHz
NR Band n97	2300 – 2400MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n98	1880 – 1920MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n99	1626.5 – 1660.5 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n101	1900 – 1910 MHz	-96 dBm	N/A	N/A	100 kHz
NR Band n102	5925 – 6425 MHz	N/A	-90 dBm	-87 dBm	100 kHz
E-UTRA Band 103	787 – 788 MHz	-96 dBm	-91 dBm	-88 dBm	100 kHz
NR Band n104	6425 – 7125 MHz	-95 dBm	-90 dBm	-87 dBm	100 kHz

NOTE 1: As defined in the scope for spurious emissions in this clause, the co-location requirements in table 6.6.5.2.3-1 do not apply for the frequency range extending Δf_OBUE immediately outside the transmit frequency range of a IAB-MT and IAB-DU. The current state-of-the-art technology does not allow a single generic solution for co-location with other system on adjacent frequencies for 30dB antenna to antenna minimum coupling loss. However, there are certain site-engineering solutions that can be used. These techniques are addressed in TR 25.942 [8].

NOTE 2: Table 6.6.5.2.3-1 assumes that two operating bands, where the corresponding transmit and receive frequency ranges in table 5.2-1 would be overlapping, are not deployed in the same geographical area. For such a case of operation with overlapping frequency arrangements in the same geographical area, special co-location requirements may apply that are not covered by the 3GPP specifications.

6.6.5.6 IAB type 1-H

The Tx spurious emissions requirements for IAB type 1-H are that for each TAB connector TX min cell group and each applicable basic limit in clause 6.6.5.2, the power summation of emissions at the TAB connectors of the TAB connector TX min cell group shall not exceed a limit specified as the basic limit + X, where X = 10log₁₀(N_{TXU,countedpercell}), unless stated differently in regional regulation.

NOTE: Conformance to the IAB type 1-H spurious emission requirement can be demonstrated by meeting at least one of the following criteria as determined by the manufacturer:

6.7 Transmitter intermodulation

6.7.1 Definition and applicability

The transmitter intermodulation requirement is a measure of the capability of the transmitter unit to inhibit the generation of signals in its non-linear elements caused by presence of the wanted signal and an interfering signal reaching the transmitter unit via the antenna, RDN and antenna array. The requirement shall apply during the transmitter ON period and the transmitter transient period.

For IAB type 1-H, the transmitter intermodulation level is the power of the intermodulation products when an interfering signal is injected into the TAB connector.

For IAB type 1-H, there are two types of transmitter intermodulation cases captured by the transmitter intermodulation requirement:

1) Co-location transmitter intermodulation in which the interfering signal is from a co-located base station.

2) Intra-system transmitter intermodulation in which the interfering signal is from other transmitter units within the IAB type 1-H.

For IAB type 1-H, the co-location transmitter intermodulation requirement is considered sufficient if the interference signal for the co-location requirement is higher than the declared interference signal for intra-system transmitter (D.30) intermodulation requirement.

6.7.2 Minimum requirement

The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band.

The minimum requirement for IAB type 1-H is defined in TS 38.174 [2], clause 6.7.2.

6.7.3 Test purpose

The test purpose is to verify the ability of the transmitter units associated with the single-band connectors or multi-band connector under test to restrict the generation of intermodulation products in its nonlinear elements caused by presence of the wanted signal and an interfering signal reaching the transmitter via the antenna to below specified levels.

6.7.4 Method of test

6.7.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier: M; see clause 4.9.1.

IAB RF Bandwidth positions to be tested for multi-carrier and/or CA:

– M_RFBWin single-band operation; see clause 4.9.1.

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBWin multi-band operation, see clause 4.9.1.

NOTE: When testing in M (or M_RFBW), if the interferer is fully or partially located outside the supported frequency range, then the test shall be done instead in B (or B_RFBW) and T (or T_RFBW), and only with the interferer located inside the supported frequency range.

6.7.4.2 Procedure

For IAB type 1-H where there may be multiple TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.2. If IAB simultaneous transmission is declared to be supported (see D.IAB-2 in table 4.6-1), connector(s) for IAB-MT and IAB-DU may be tested one at a time or may be tested in parallel as shown in annex D.1.2. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the single-band connector or multi-band connector under test to measurement equipment as shown in annex D.1.2 for IAB type 1-H. All connectors not under test shall be terminated.

2) The measurement device characteristics shall be:

– Detection mode: True RMS.

3) For connectors declared to be capable of single carrier operation only (D.16), set the representative connectors under test to transmit according to the applicable test configuration in clause 4.8 at rated carrier output power P_rated,c,TABC for IAB type 1-H (D.21). Channel set-up shall be according to IAB-DU-FR1-TM 1.1 for IAB-DU and IAB-MT-FR1-TM 1.1 for IAB-MT.

4) For IAB 1-H, generate the interfering signal according to IAB-DU-FR1-TM 1.1for IAB-DU and IAB-MT-FR1-TM 1.1 for IAB-MT, as defined in clause 4.9.2, with the minimum channel bandwidth (BW_Channel) with 15 kHz SCS of the band defined in clause 5.3.5 and a centre frequency offset from the lower/upper edge of the wanted signal or edge of sub-block inside a sub-block gap , for n = 1, 2 and 3, but exclude interfering frequencies that are outside of the allocated downlink operating band or interfering frequencies that are not completely within the sub-block gap or within the Inter RF Bandwidth gap.

5) Adjust ATT attenuator (as in the test setup in annex D.1.2 for IAB type 1-H) so that level of the interfering signal is as defined in clause 6.7.5.

6) Perform the unwanted emission tests specified in clauses 6.6.3 and 6.6.4 for all third and fifth order intermodulation products which appear in the frequency ranges defined in clauses 6.6.3 and 6.6.4. The width of the intermodulation products shall be taken into account.

7) Perform the transmitter spurious emissions test as specified in clause 6.6.5, for all third and fifth order intermodulation products which appear in the frequency ranges defined in clause 6.6.5. The width of the intermodulation products shall be taken into account.

8) Verify that the emission level does not exceed the required level in clause 6.7.5 with the exception of interfering signal frequencies.

9) Repeat the test for the remaining interfering signal centre frequency offsets according to step 4.

10) Repeat the test for the remaining test signals defined in clause 6.7.5 for additional requirements and for IAB type 1-H intra-system requirements.

In addition, for multi-band connectors, the following steps shall apply:

11) For a multi-band connectors and single band tests, repeat the steps above per involved operating band where single band test configurations and test models shall apply with no carrier activated in the other operating band.

NOTE: The third order intermodulation products are centred at 2F1±F2 and 2F2±F1. The fifth order intermodulation products are centred at 3F1±2F2, 3F2±2F1, 4F1±F2, and 4F2±F1 where F1 represents the test signal centre frequency or centre frequency of each sub-block and F2 represents the interfering signal centre frequency. The widths of intermodulation products are:

– (n*BW_F1+ m* BW_F2) for the nF1±mF2 products;

– (n* BW_F2 + m* BW_F1) for the nF2±mF1 products;

where BW_F1represents the test wanted signal RF bandwidth or channel bandwidth in case of single carrier, or sub-block bandwidth and BW_F2represents the interfering signal channel bandwidth.

6.7.5 Test requirements

6.7.5.1 IAB type 1-H

6.7.5.1.1 Co-location minimum requirements

The transmitter intermodulation level shall not exceed the unwanted emission limits in clauses 6.6.3, 6.6.4 and 6.6.5 in the presence of an NR interfering signal according to table 6.7.5.1.1-1.

The requirement is applicable outside the IAB RF Bandwidth edges. The interfering signal offset is defined relative to the IAB RF Bandwidth edges or Radio Bandwidth edges.

For TAB connectors supporting operation in non-contiguous spectrum, the requirement is also applicable inside a sub-block gap for interfering signal offsets where the interfering signal falls completely within the sub-block gap. The interfering signal offset is defined relative to the sub-block edges.

For multi-band connector, the requirement shall apply relative to the IAB RF Bandwidth edges of each operating band. In case the inter RF Bandwidth gap is less than 3*BW_Channel MHz (where BW_Channel is the minimal IAB-DU channel bandwidth and IAB-MT channel bandwidth of the band), the requirement in the gap shall apply only for interfering signal offsets where the interfering signal falls completely within the inter RF Bandwidth gap.

Table 6.7.5.1.1-1: Interfering and wanted signals for the co-location transmitter intermodulation requirement

Parameter	Value
Wanted signal type	NR single carrier, or multi-carrier, or multiple intra-band contiguously or non-contiguously aggregated carriers
Interfering signal type	NR signal, the minimum IAB-DU channel bandwidth (BW_Channel) or IAB-MT channel bandwidth (BW_Channel) with 15 kHz SCS of the band defined in clause 5.3.5.
Interfering signal level	Rated total output power per TAB connector (P_rated,t,TABC) in the operating band – 30 dB
Interfering signal centre frequency offset from the lower/upper edge of the wanted signal or edge of sub-block inside a gap	, for n=1, 2 and 3
NOTE 1: Interfering signal positions that are partially or completely outside of any downlink operating band of the TAB connector are excluded from the requirement, unless the interfering signal positions fall within the frequency range of adjacent downlink operating bands in the same geographical area. NOTE 2: In Japan, NOTE 1 is not applied in Band n77, n78, n79.

6.7.5.1.2 Intra-system minimum requirements

The transmitter intermodulation level shall not exceed the unwanted emission limits in clauses 6.6.3 and 6.6.4 in the presence of an NR interfering signal according to table 6.7.5.1.2-1.

Table 6.7.5.1.2-1: Interfering and wanted signals for intra-system transmitter intermodulation requirement

Parameter	Value
Wanted signal type	NR signal
Interfering signal type	NR signal of the same IAB-DU channel bandwidth or IAB-MT channel bandwidth and SCS as the wanted signal (Note 1).
Interfering signal level	Power level declared by the IAB manufacturer (Note 2).
Frequency offset between interfering signal and wanted signal	0 MHz
NOTE 1: The interfering signal shall be incoherent with the wanted signal. NOTE 2: The declared interfering signal power level at each TAB connector is the sum of the co-channel leakage power coupled via the combined RDN and Antenna Array from all the other TAB connectors, but does not comprise power radiated from the Antenna Array and reflected back from the environment. The power at each of the interfering TAB connectors is P_rated,c,TABC.

6.7.5.1.3 Additional requirements

For Band n41 operation in Japan, the transmitter intermodulation level shall not exceed the unwanted emission limits in clauses 6.6.3, 6.6.4 and 6.6.5 in the presence of an NR interfering signal according to table 6.7.5.1.3-1.

Table 6.7.5.1.3-1 Interfering and wanted signals for the additional transmitter intermodulation requirement for Band n41

Parameter	Value
Wanted signal	NR single carrier (NOTE)
Interfering signal type	NR signal of 10 MHz channel bandwidth
Interfering signal level	Rated total output power in the operating band – 30 dB
Interfering signal centre frequency offset from the lower/upper carrier centre frequency of the wanted signal	± 5 MHz ± 15 MHz ± 25 MHz
NOTE: This requirement applies for NR carriers allocated within 2545-2645 MHz.