7 Radiated receiver characteristics

38.176-23GPPIntegrated Access and Backhaul (IAB) conformance testingNRPart 2: radiated conformance testingRelease 17TS

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

7.1 General

General test conditions for receiver 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.

Unless otherwise stated, the following arrangements apply for radiated receiver characteristics requirements in clause 7:

– Requirements apply during the IAB receive period.

– Requirements shall be met for any transmitter setting.

– Throughput requirements defined for the radiated receiver characteristics do not assume HARQ retransmissions.

– When IAB is configured to receive multiple carriers, all the throughput requirements are applicable for each received carrier.

– For ACS, blocking and intermodulation characteristics, the negative offsets of the interfering signal apply relative to the lower IAB RF Bandwidth edge or sub-block edge inside a sub-block gap, and the positive offsets of the interfering signal apply relative to the upper IAB RF Bandwidth edge or sub-block edge inside a sub-block gap.

NOTE 1: In normal operating condition the IAB in TDD operation is configured to TX OFF power during receive period.

Each requirement, except OTA receiver spurious emissions, shall be met over the RoAoA specified.

For FR1 requirements which are to be met over the OTA REFSENS RoAoA absolute requirement values are offset by the following term:

Δ_OTAREFSENS = 44.1 – 10*log₁₀(BeW_θ,REFSENS*BeW_φ,REFSENS) (dB) for the reference direction.

And

Δ_OTAREFSENS = 41.1 – 10*log₁₀(BeW_θ,REFSENS*BeW_φ,REFSENS) (dB) for all other directions.

For requirements which are to be met over the minSENS RoAoA absolute requirement values are offset by the following term:

Δ_minSENS = P_REFSENS – EIS_minSENS (dB)

For FR2 requirements which are to be met over the OTA REFSENS RoAoA absolute requirement values are offset by the following term:

Δ_{FR2_REFSENS} = -3 dB for the reference direction

and

Δ_{FR2_REFSENS} = 0 dB for all other directions

7.2 OTA sensitivity

7.2.1 Definition and applicability

The OTA sensitivity requirement is based upon the declaration of one or more OTA sensitivity direction declarations (OSDD), related to a IAB type 1-H and IAB type 1-O receiver.

The IAB type 1-H and IAB type 1-O receiver may optionally be capable of redirecting/changing the receiver target by means of adjusting BS settings resulting in multiple sensitivity RoAoA. The sensitivity RoAoA resulting from the current BS settings is the active sensitivity RoAoA.

If the IAB is capable of redirecting the receiver target related to the OSDD then the OSDD shall include:

– IAB channel bandwidth and declared minimum EIS level applicable to any active sensitivity RoAoA inside the receiver target redirection range in the OSDD.

– A declared receiver target redirection range, describing all the angles of arrival that can be addressed for the OSDD through alternative settings in the BS.

– Five declared sensitivity RoAoA comprising the conformance testing directions as detailed in TR 37. 941 [29].

– The receiver target reference direction.

NOTE 1: Some of the declared sensitivity RoAoA may coincide depending on the redirection capability.

NOTE 2: In addition to the declared sensitivity RoAoA, several sensitivity RoAoA may be implicitly defined by the receiver target redirection range without being explicitly declared in the OSDD.

If the IAB is not capable of redirecting the receiver target related to the OSDD, then the OSDD includes only:

– IAB channel bandwidth and declared minimum EIS level applicable to the sensitivity RoAoA in the OSDD.

– One declared active sensitivity RoAoA.

– The receiver target reference direction.

NOTE 3: For BS without target redirection capability, the declared (fixed) sensitivity RoAoA is always the active sensitivity RoAoA.

The OTA sensitivity EIS level declaration shall apply to each supported polarization, under the assumption of polarization match.

7.2.2 Minimum requirement

The minimum requirement for IAB-DU type 1-H and IAB-DU type 1-O is in TS 38.174 [2], clause 10.2.1.

The minimum requirement for IAB-MT type 1-H and IAB-MT type 1-O is in TS 38.174 [2], clause 10.2.2.

7.2.3 Test purpose

The test purpose is to verify that the BS can meet the throughput requirement for a specified measurement channel at the EIS level and the range of angles of arrival declared in the OSDD.

7.2.4 Method of test

7.2.4.1 Initial conditions

Test environment: Normal, see annex B.2.

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

Directions to be tested:

– receiver target reference direction (D.31),

– conformance test directions (D.33).

7.2.4.2 Procedure

1) Place the BS with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.1.

2) Align the manufacturer declared coordinate system orientation of the BS with the test system.

3) Align the BS with the test antenna in the declared direction to be tested.

4) Ensure the polarization is accounted for such that all the power from the test antenna is captured by the BS under test.

5) Start the signal generator for the wanted signal to transmit:

– The test signal as specified in clause 7.2.5.

6) Set the test signal mean power so the calibrated radiated power at the BS Antenna Array coordinate system reference point is as specified in clause 7.2.5.

7) Measure the throughput according to annex A.1 for each supported polarization.

8) Repeat steps 3 to 9 for all OSDD(s) declared for the BS (D.23), and supported polarizations.

For multi-band capable BS and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carriers activated in the other band.

7.2.5 Test requirements

7.2.5.1 General

The minimum EIS level is a declared figure (D.27, D.28) for each OSDD (D.23). The test requirement is calculated from the declared value offset by the EIS Test Tolerance specified in clause 4.1.

7.2.5.2 Test requirements for IAB-DU type 1-H and IAB-DU type 1-O

For each measured carrier, the throughput measured in step 7 of clause 7.2.4.2 shall be ≥ 95 % of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in table 7.2.5.2-1.

Table 7.2.5.2-1: EIS levels

IAB-DU channel	Sub-carrier	Reference	OTA sensitivity level, EIS (dBm)
bandwidth (MHz)	spacing (kHz)	measurement channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	15	G-FR1-A1-1
10, 15	30	G-FR1-A1-2
10, 15	60	G-FR1-A1-3	Declared	Declared	Declared
20, 25, 30, 40, 50	15	G-FR1-A1-4	minimum EIS	minimum EIS	minimum EIS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	+ 1.3	+ 1.4	+ 1.6
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6
NOTE: EIS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

7.2.5.3 Test requirements for IAB-MT type 1-H and IAB-MT type 1-O

Table 7.2.5.3-1: EIS levels

IAB-MT channel	Sub-carrier	Reference	OTA sensitivity level, EIS (dBm)
bandwidth (MHz)	spacing (kHz)	measurement channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	30	G-FR1-A1-22 (Note 1)	Declared minimum EIS + 1.3	Declared minimum EIS + 1.4	Declared minimum EIS + 1.6
10, 15	60	G-FR1-A1-23 (Note 1)
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-25 (Note 1)
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-26 (Note 1)
NOTE: EIS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-MT channel bandwidth.

7.3 OTA reference sensitivity level

7.3.1 Definition and applicability

The OTA REFSENS requirement is a directional requirement and is intended to ensure the minimum OTA reference sensitivity level for a declared OTA REFSENS RoAoA. The OTA reference sensitivity power level EIS_REFSENS is the minimum mean power received at the RIB at which a reference performance requirement shall be met for a specified reference measurement channel.

The OTA REFSENS EIS level declaration shall apply to each supported polarization, under the assumption of polarization match.

7.3.2 Minimum requirement

For IAB-DU type 1-O the minimum requirement is in TS 38.174 [2], clause 10.3.2.1.

For IAB-DU type 2-O the minimum requirement is in TS 38.174 [2], clause 10.3.3.2.

For IAB-MT type 1-O the minimum requirement is in TS 38.174 [2], clause 10.3.3.2.

For IAB-MT type 2-O the minimum requirement is in TS 38.174 [2], clause 10.3.3.3.

7.3.3 Test Purpose

The test purpose is to verify that the IAB can meet the throughput requirement for a specified measurement channel at the EIS_REFSENS level and the range of angles of arrival within the OTA REFSENS RoAoA.

7.3.4 Method of test

7.3.4.1 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.

Directions to be tested:

– OTA REFSENS receiver target reference direction (D.54),

– OTA REFSENS conformance test directions (D.55).

7.3.4.2 Procedure

1) Place the IAB with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.1.

2) Align the manufacturer declared coordinate system orientation of the IAB with the test system.

3) Align the IAB with the test antenna in the declared direction to be tested.

4) Ensure the polarization is accounted for such that all the power from the test antenna is captured by the IAB under test.

5) Start the signal generator for the wanted signal to transmit:

– The test signal as specified in clause 7.3.5.

6) Set the test signal mean power so the calibrated radiated power at the BS Antenna Array coordinate system reference point is as specified in clause 7.3.5.

7) Measure the throughput according to annex A.1 for each supported polarization.

9) Repeat steps 3 to 9 for all OTA REFSENS conformance test directions of the IAB (D.55), and supported polarizations.

For multi-band capable FR1 IAB and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carriers activated in the other band.

7.3.5 Test requirements

7.3.5.1 General

The FR1 EIS_REFSENS level is the conducted REFSENS requirement value offset by Δ_OTAREFSENS. The test requirement is calculated from the EIS_REFSENS level offset by the EIS_REFSENS Test Tolerance specified in clause 4.1.

7.3.5.2 IAB-DU OTA reference sensitivity level

7.3.5.2.1 Test requirements for IAB-DU type 1-O

For each measured carrier, the throughput measured in step 7 of clause 7.3.4.2 shall be ≥ 95 % of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in tables 7.3.5.2.1-1 to 7.3.5.2.1-3.

Table 7.3.5.2.1-1: Wide Area IAB-DU EIS_REFSENS levels

IAB-DU channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement	OTA reference sensitivity level, EIS_REFSENS (dBm)
		channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	15	G-FR1-A1-1	-100.4 – Δ_OTAREFSENS	-100.3 – Δ_OTAREFSENS	-100.1 – Δ_OTAREFSENS
10, 15	30	G-FR1-A1-2	-100.5 – Δ_OTAREFSENS	-100.4 – Δ_OTAREFSENS	-100.2 – Δ_OTAREFSENS
10, 15	60	G-FR1-A1-3	-97.6 – Δ_OTAREFSENS	-97.5 – Δ_OTAREFSENS	-97.3 – Δ_OTAREFSENS
20, 25, 30, 40, 50	15	G-FR1-A1-4	-94 – Δ_OTAREFSENS	-93.9 – Δ_OTAREFSENS	-93.7 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-94.3 – Δ_OTAREFSENS	-94.2 – Δ_OTAREFSENS	-94 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-94.4 – Δ_OTAREFSENS	-94.3 – Δ_OTAREFSENS	-94.1 – Δ_OTAREFSENS
NOTE: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

Table 7.3.5.2-2: Medium Range IAB-DU EIS_REFSENS levels

IAB-DU channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement	EIS_REFSENS (dBm)
		channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	15	G-FR1-A1-1	-95.4 – Δ_OTAREFSENS	-95.3 – Δ_OTAREFSENS	-95.1 – Δ_OTAREFSENS
10, 15	30	G-FR1-A1-2	-95.5 – Δ_OTAREFSENS	-95.4 – Δ_OTAREFSENS	-95.2 – Δ_OTAREFSENS
10, 15	60	G-FR1-A1-3	-92.6 – Δ_OTAREFSENS	-92.5 – Δ_OTAREFSENS	-92.3 – Δ_OTAREFSENS
20, 25, 30, 40, 50	15	G-FR1-A1-4	-89 – Δ_OTAREFSENS	-88.9 – Δ_OTAREFSENS	-88.7 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-89.3 – Δ_OTAREFSENS	-89.2 – Δ_OTAREFSENS	-89 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-89.4 – Δ_OTAREFSENS	-89.3 – Δ_OTAREFSENS	-89.1 – Δ_OTAREFSENS
NOTE: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

Table 7.3.5.2.1-3: Local Area IAB-DU EIS_REFSENS levels

IAB-DU channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement	OTA reference sensitivity level, EIS_REFSENS (dBm)
		channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	15	G-FR1-A1-1	-92.4 – Δ_OTAREFSENS	-92.3 – Δ_OTAREFSENS	-92.1 – Δ_OTAREFSENS
10, 15	30	G-FR1-A1-2	-92.5 – Δ_OTAREFSENS	-92.4 – Δ_OTAREFSENS	-92.2 – Δ_OTAREFSENS
10, 15	60	G-FR1-A1-3	-89.6 – Δ_OTAREFSENS	-89.5 – Δ_OTAREFSENS	-89.3 – Δ_OTAREFSENS
20, 25, 30, 40, 50	15	G-FR1-A1-4	-86 – Δ_OTAREFSENS	-85.9 – Δ_OTAREFSENS	-85.7 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-86.3 – Δ_OTAREFSENS	-86.2 – Δ_OTAREFSENS	-86 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-86.4 – Δ_OTAREFSENS	-86.3 – Δ_OTAREFSENS	-86.1 – Δ_OTAREFSENS
NOTE: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

7.3.5.2.2 Test requirements for IAB-DU type 2-O

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in annex A.1 when the OTA test signal is at the corresponding EIS_REFSENS level and arrives from any direction within the OTA REFSENS RoAoA.

EIS_REFSENS levels are derived from a single declared basis level EIS_{REFSENS_50M,} which is based on a reference measurement channel with 50 MHz IAB-DU channel bandwidth. EIS_{REFSENS_50M} itself is not a requirement and although it is based on a reference measurement channel with 50 MHz IAB channel bandwidth it does not imply that IAB-DU has to support 50 MHz IAB-DU channel bandwidth.

For Wide Area IAB-DU, EIS_{REFSENS_50M} is an integer value in the range -96 to -119 dBm. The specific value is declared by the vendor.

For Medium Range IAB-DU, EIS_{REFSENS_50M} is an integer value in the range -91 to -114 dBm. The specific value is declared by the vendor.

For Local Area IAB-DU, EIS_{REFSENS_50M} is an integer value in the range -86 to -109 dBm. The specific value is declared by the vendor.

Table 7.3.5.2.2-1 FR2 OTA reference sensitivity requirement

IAB-DU channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel (annex A.1)	OTA reference sensitivity level, EIS_REFSENS (dBm)
50, 100, 200	60	G-FR2-A1-1	EIS_{REFSENS_50M} + 2.4 + Δ_{FR2_REFSENS}
50	120	G-FR2-A1-2	EIS_{REFSENS_50M} + 2.4 + Δ_{FR2_REFSENS}
100, 200, 400	120	G-FR2-A1-3	EIS_{REFSENS_50M} + 3 + 2.4 + Δ_{FR2_REFSENS}
NOTE 1: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth. NOTE 2: The declared EIS_{REFSENS_50M} shall be within the range specified above.

7.3.5.3 IAB-MT OTA reference sensitivity level

7.3.5.3.1 Test requirement for IAB-MT type 1-O

Table 7.3.5.3.1-1: Wide Area IAB-MT type 1-O reference sensitivity levels

IAB-MT channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	OTA reference sensitivity level, EIS_REFSENS (dBm)
IAB-MT channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	30	G-FR1-A1-22	-100.7 – Δ_OTAREFSENS	-100.6 – Δ_OTAREFSENS	-100.4 – Δ_OTAREFSENS
10, 15	60	G-FR1-A1-23	-97.7 – Δ_OTAREFSENS	-97.6 – Δ_OTAREFSENS	-97.4 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-25	-94.1 – Δ_OTAREFSENS	-94.0 – Δ_OTAREFSENS	-93.8 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-26	-94.3 – Δ_OTAREFSENS	-94.2 – Δ_OTAREFSENS	-94.0 – Δ_OTAREFSENS
NOTE: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-MT channel bandwidth.

Table 7.3.5.3.1-2: Local Area IAB-MT type 1-O reference sensitivity levels

IAB-MT channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	OTA reference sensitivity level, EIS_REFSENS (dBm)
IAB-MT channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15	30	G-FR1-A1-22	-92.7 – Δ_OTAREFSENS	-92.6 – Δ_OTAREFSENS	-92.4 – Δ_OTAREFSENS
10, 15	60	G-FR1-A1-23	-89.7 – Δ_OTAREFSENS	-89.6 – Δ_OTAREFSENS	-89.4 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-25	-86.1 – Δ_OTAREFSENS	-86.0 – Δ_OTAREFSENS	-85.8 – Δ_OTAREFSENS
20, 25, 30, 40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-26	-86.3 – Δ_OTAREFSENS	-86.2 – Δ_OTAREFSENS	-86.0 – Δ_OTAREFSENS
NOTE: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-MT channel bandwidth.

7.3.5.3.2 Minimum requirement for IAB-MT type 2-O

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in the corresponding table and annex A.1 when the OTA test signal is at the corresponding EIS_REFSENS level and arrives from any direction within the OTA REFSENS RoAoA.

EIS_REFSENS levels are derived from a single declared basis level EIS_{REFSENS_50M,} which is based on a reference measurement channel with 50 MHz IAB-MT channel bandwidth. EIS_{REFSENS_50M} itself is not a requirement and although it is based on a reference measurement channel with 50 MHz IAB-MT channel bandwidth it does not imply that IAB-MT has to support 50 MHz IAB-MT channel bandwidth.

For Wide Area IAB-MT, EIS_{REFSENS_50M} is an integer value in the range -96 to -119 dBm. The specific value is declared by the vendor.

For Local Area IAB-MT, EIS_{REFSENS_50M} is an integer value in the range -86 to -114 dBm. The specific value is declared by the vendor.

Table 7.3.5.3.2-1: FR2 OTA reference sensitivity requirement

*IAB-MT channel Bandwidth* (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	OTA reference sensitivity level, EIS_REFSENS (dBm)
50, 100, 200	60	G-FR2-A1-21	EIS_{REFSENS_50M}+ 3.3 + Δ_{FR2_REFSENS}
50	120	G-FR2-A1-22	EIS_{REFSENS_50M}+ 3.3+ Δ_{FR2_REFSENS}
100, 200, 400	120	G-FR2-A1-23	EIS_{REFSENS_50M}+ 3.3+ 3+ Δ_{FR2_REFSENS}
NOTE 1: EIS_REFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-MT channel bandwidth. NOTE 2: The declared EIS_{REFSENS_50M} shall be within the range specified above.

7.4 OTA dynamic range

7.4.1 Definition and applicability

The OTA dynamic range is a measure of the capability of the receiver unit to receive a wanted signal in the presence of an interfering signal inside the received IAB-DU channel bandwidth.

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

7.4.2 Minimum requirement

For IAB-DU type 1-O, the minimum requirement is in TS 38.174 [2], clause 10.4.1.

7.4.3 Test purpose

The test purpose is to verify that at the IAB-DU receiver dynamic range, the relative throughput shall fulfil the specified limit.

7.4.4 Method of test

7.4.4.1 Initial conditions

Test environment: Normal: see annex B.2.

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

Directions to be tested: OTA REFSENS receiver target reference direction (D.54).

7.4.4.2 Procedure

1) Place the IAB-DU with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.2.

2) Align the manufacturer declared coordinate system orientation of the IAN-DU with the test system.

3) Align the IAB-DU with the test antenna in the declared direction to be tested.

4) Ensure the polarization is accounted for such that all the power from the test antenna is captured by the IAB-DU under test.

5) Set the test signal mean power so that the calibrated radiated power at the IAB-DU Antenna Array coordinate system reference point is as follows:

a) Set the signal generator for the wanted signal to transmit as specified in table 7.4.5.2-1 to 7.4.5.2-3.

b) Set the signal generator for the AWGN interfering signal at the same frequency as the wanted signal to transmit as specified in table 7.4.5.2-1 to 7.4.5.2-3.

6) Measure the throughput according to annex A.2 for each supported polarization.

For multi-band RIB(s) and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carriers activated in the other band.

7.4.5 Test requirement

7.4.5.1 General

The test requirement is calculated from the OTA wanted signal mean power level offset by the OTA dynamic range Test Tolerance specified in clause 4.1.

7.4.5.2 Test requirements for IAB-DU type 1-O

For each measured carrier, the throughput measured in step 6 of clause 7.4.4.2 shall be ≥ 95 % of the maximum throughput of the reference measurement channel as specified in annex A.2 with parameters specified in tables 7.4.5.2-1 to 7.4.5.2-3.

Table 7.4.5.2-1: Wide Area IAB-DU dynamic range

IAB-DU	Subcarrier	Reference	Wanted signal mean power (dBm)	Interfering	Type of
channel bandwidth (MHz)	spacing (kHz)	measurement channel (annex A.2)	Wanted signal mean power (dBm)	signal mean power (dBm) / BW_Config	interfering signal
10	15	G-FR1-A2-1	-70.4 – Δ_OTAREFSENS	-79.3 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-71.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-68.1 – Δ_OTAREFSENS
15	15	G-FR1-A2-1	-70.4 – Δ_OTAREFSENS	-77.5 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-71.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-68.1 – Δ_OTAREFSENS
20	15	G-FR1-A2-4	-64.2 – Δ_OTAREFSENS	-76.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
25	15	G-FR1-A2-4	-64.2 – Δ_OTAREFSENS	-75.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
30	15	G-FR1-A2-4	-64.2 – Δ_OTAREFSENS	-74.4 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
40	15	G-FR1-A2-4	-64.2 – Δ_OTAREFSENS	-73.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
50	15	G-FR1-A2-4	-64.2 – Δ_OTAREFSENS	-72.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
60	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS	-71.3 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
70	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS	-70.7 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
80	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS	-70.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
90	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS	-69.5 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
100	30	G-FR1-A2-5	-64.2 – Δ_OTAREFSENS	-69.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-64.5 – Δ_OTAREFSENS
NOTE: The wanted signal mean power is the power level of a single instance of the corresponding reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

Table 7.4.5.2-2: Medium Range IAB-DU dynamic range

IAB-DU	Subcarrier	Reference	Wanted signal mean power (dBm)	Interfering	Type of
channel bandwidth (MHz)	spacing (kHz)	measurement channel (annex A.2)	Wanted signal mean power (dBm)	signal mean power (dBm) / BW_Config	interfering signal
10	15	G-FR1-A2-1	-65.4 – Δ_OTAREFSENS	-74.3 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-66.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-63.1 – Δ_OTAREFSENS
15	15	G-FR1-A2-1	-65.4 – Δ_OTAREFSENS	-72.5 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-66.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-63.1 – Δ_OTAREFSENS
20	15	G-FR1-A2-4	-59.2 – Δ_OTAREFSENS	-71.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
25	15	G-FR1-A2-4	-59.2 – Δ_OTAREFSENS	-70.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
30	15	G-FR1-A2-4	-59.2 – Δ_OTAREFSENS	-69.4 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
40	15	G-FR1-A2-4	-59.2 – Δ_OTAREFSENS	-68.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
50	15	G-FR1-A2-4	-59.2 – Δ_OTAREFSENS	-67.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	–59.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
60	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS	-66.3 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
70	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS	-65.7 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
80	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS	-65.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
90	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS	-64.5 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
100	30	G-FR1-A2-5	-59.2 – Δ_OTAREFSENS	-64.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-59.5 – Δ_OTAREFSENS
NOTE: The wanted signal mean power is the power level of a single instance of the corresponding reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

Table 7.4.5.2-3: Local Area IAB-DU dynamic range

IAB-DU	Subcarrier	Reference	Wanted signal mean power (dBm)	Interfering	Type of
channel bandwidth (MHz)	spacing (kHz)	measurement channel (annex A.2)	Wanted signal mean power (dBm)	signal mean power (dBm) / BW_Config	interfering signal
10	15	G-FR1-A2-1	-62.4 – Δ_OTAREFSENS	-71.3 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-64.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-60.1 – Δ_OTAREFSENS
15	15	G-FR1-A2-1	-62.4 – Δ_OTAREFSENS	-69.5 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-2	-64.1 – Δ_OTAREFSENS
	60	G-FR1-A2-3	-60.1 – Δ_OTAREFSENS
20	15	G-FR1-A2-4	-56.2 – Δ_OTAREFSENS	-68.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
25	15	G-FR1-A2-4	-56.2 – Δ_OTAREFSENS	-67.2 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
30	15	G-FR1-A2-4	-56.2 – Δ_OTAREFSENS	-66.4 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
40	15	G-FR1-A2-4	-56.2 – Δ_OTAREFSENS	-65.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
50	15	G-FR1-A2-4	-56.2 – Δ_OTAREFSENS	-64.1 – Δ_OTAREFSENS	AWGN
	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
60	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS	-63.3 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
70	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS	-62.7 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
80	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS	-62.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
90	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS	-61.5 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
100	30	G-FR1-A2-5	-56.2 – Δ_OTAREFSENS	-61.1 – Δ_OTAREFSENS	AWGN
	60	G-FR1-A2-6	-56.5 – Δ_OTAREFSENS
NOTE: The wanted signal mean power is the power level of a single instance of the corresponding reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full IAB-DU channel bandwidth.

7.5 OTA in-band selectivity and blocking

7.5.1 OTA adjacent channel selectivity

7.5.1.1 Definition and applicability

OTA Adjacent channel selectivity (ACS) is a measure of the receiver’s ability to receive an OTA wanted signal at its assigned channel frequency in the presence of an OTA adjacent channel signal with a specified centre frequency offset of the interfering signal to the band edge of a victim system. The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

7.5.1.2 Minimum requirement

For IAB-DU type 1-O, the minimum requirements are in TS 38.174 [2], clause 10.5.1.2.

For IAB-DU type 2-O , The minimum requirements are in TS 38.174 [2], clause 10.5.1.3.

For IAB-MT type 1-O, The minimum requirements are in TS 38.174 [2], clause 10.5.1.5.

For IAB-MT type 2-O, The minimum requirements are in TS 38.174 [2], clause 10.5.1.4.

7.5.1.3 Test purpose

The test purpose is to verify the ability of the IAB receiver filter to suppress interfering signals in the channels adjacent to the wanted channel.

7.5.1.4 Method of test

7.5.1.4.1 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 edge position 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.

Directions to be tested:

– For IAB type 1-O, receiver target reference direction (D.31),

– For IAB type 2-O, OTA REFSENS receiver target reference direction (D.54).

7.5.1.4.2 Procedure

1) Place the IAB with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.3.

2) Align the manufacturer declared coordinate system orientation of the IAB with the test system.

3) Align the IAB with the test antenna in the declared direction to be tested.

4) Align the IAB so that the wanted signal and interferer signal is polarization matched with the test antenna(s).

5) Configure the beam peak direction for the transmitter according to the declared reference beam direction pair for the appropriate beam identifier.

6) Set the test signal mean power so that the calibrated radiated power at the IAB Antenna Array coordinate system reference point is as follows:

a) For IAB-DU type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.1.5.2-1.

For IAB-DU type 2-O, set the signal generator for the wanted signal to transmit as specified in Table 7.5.1.5.3-1.

For IAB-MT type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.1.5.4-1.

For IAB-MT type 2-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.1.5.5-1.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in table 7.5.1.5.2-1 and for the wanted signal of IAB-MT type 1-O to transmit in table 7.5.1.5.4-1.For simultaneous operation tests for IAB type 2-O, set the signal generator for the wanted signal of IAB-DU type 2-O to transmit as specified in table 7.5.1.5.3-1and for the wanted signal of IAB-MT type 2-O to transmit in table 7.5.1.5.5-1.

b) For IAB-DU type 1-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.2-2.

For IAB-DU type 2-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.3-2.

For IAB-MT type 1-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.4-2.

For IAB-MT type 2-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.5-2.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.4-2.

For simultaneous operation tests for IAB type 2-O, set the signal generator for the interfering signal at the adjacent channel frequency of the wanted signal to transmit as specified in table 7.5.1.5.5-2.

7) Measure throughput according to annex A.1 for each supported polarization, for multi-carrier and/or CA operation the throughput shall be measured for relevant carriers specified by the test configuration specified in clauses 4.7.2 and 4.8.

For multi-band RIB(s) and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carriers activated in the other band.

7.5.1.5 Test requirement

7.5.1.5.1 General

The test requirement is calculated from the OTA wanted signal mean power level offset by the OTA ACS Test Tolerance specified in annex C.

7.5.1.5.2 Test requirements for IAB-DU type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction, and the AoA of the incident wave of a received signal and the interfering signal are within the minSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For FR1, the OTA wanted and the interfering signal are specified in table 7.5.1.5.2-1 and table 7.5.1.5.2-2 for ACS. The reference measurement channel for the OTA wanted signal is identified in clause 7.3.5.2 and is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

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

For RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA ACS requirement shall apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the NR interfering signal in table 7.5.1.5.2-2. The OTA interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For multi-band RIBs, the OTA ACS requirement shall apply in addition inside any Inter RF Bandwidth gap, in case the Inter RF Bandwidth gap size is at least as wide as the NR interfering signal in table 7.5.1.5.2-2. The interfering signal offset is defined relative to the IAB RF Bandwidth edges inside the Inter RF Bandwidth gap.

Table 7.5.1.5.2-1: OTA ACS requirement for IAB-DU type 1-O

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Wanted signal mean power (dBm) (Note 2)			Interfering signal mean power (dBm)
	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100 (Note 1)	EIS_minSENS + 6 dB			Wide Area IAB: -52 – Δ_minSENS Medium Range IAB: -47– Δ_minSENS Local Area IAB: -44– Δ_minSENS
NOTE 1: The SCS for the lowest/highest carrier received is the lowest SCS supported by the IAB-DU for that bandwidth. NOTE 2: EIS_minSENS depends on the IAB-DU channel bandwidth as specified in TS 38.104 [4], clause 10.2.1.

Table 7.5.1.5.2-2: OTA ACS interferer frequency offset for IAB-DU type 1-O

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper IABF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	Type of interfering signal
10	±2.5075	5 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
15	±2.5125
20	±2.5025
25	±9.4675	20 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 100 RBs
30	±9.4725
40	±9.4675
50	±9.4625
60	±9.4725
70	±9.4675
80	±9.4625
90	±9.4725
100	±9.4675

7.5.1.5.3 Test requirements for IAB-DU type 2-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For FR2, the OTA wanted and the interfering signal are specified in table 7.5.1.5.3-1 and table 7.5.1.5.3-2 for ACS. The reference measurement channel for the OTA wanted signal is identified in clause 7.3.5.3 and is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

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

For RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA ACS requirement shall apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the NR interfering signal in table 7.5.1.5.3-2. The OTA interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

Table 7.5.1.5.3-1: OTA ACS requirement for IAB-DU type 2-O

IAB-DU channel bandwidth of the	Wanted signal mean power (dBm)		Interfering signal mean
lowest/highest carrier received (MHz)	24.24 GHz < f ≤ 33.4 GHz	37 GHz < f ≤ 52.6 GHz	power (dBm)
50, 100, 200, 400	EIS_REFSENS + 6 dB (Note 3)	EIS_REFSENS + 6 dB (Note 3)	EIS_{REFSENS_50M} + 27.7 + Δ_{FR2_REFSENS} (Note 1) EIS_{REFSENS_50M} + 26.7 + Δ_{FR2_REFSENS} (Note 2)
NOTE 1: Applicable to bands defined within the frequency spectrum range of 24.25 – 33.4 GHz. NOTE 2: Applicable to bands defined within the frequency spectrum range of 37 – 52.6 GHz. NOTE 3: EIS_REFSENS is specified in TS 38.174 [2], clause 10.3.3.

Table 7.5.1.5.3-2: OTA ACS interferer frequency offset for IAB-DU type 2-O

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper IAB Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	Type of interfering signal
50	±24.29	50 MHz DFT-s-OFDM NR
100	±24.31	signal, 60 kHz SCS, 64 RBs
200	±24.29
400	±24.31

7.5.1.5.4 Test requirements for IAB-MT type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the minSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For FR1, the OTA wanted and the interfering signal are specified in table 7.5.1.5.4-1, table 7.5.1.5.4-2 for OTA ACS. The reference measurement channel for the OTA wanted signal is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

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

For RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA ACS requirement shall apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the NR interfering signal in table 7.5.1.5.4-2. The OTA interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For multi-band RIBs, the OTA ACS requirement shall apply in addition inside any Inter RF Bandwidth gap, in case the Inter RF Bandwidth gap size is at least as wide as the NR interfering signal in table 7.5.1.5.4-2. The interfering signal offset is defined relative to the IAB-MT RF Bandwidth edges inside the Inter RF Bandwidth gap.

Table 7.5.1.5.4-1: OTA ACS requirement for IAB-MT

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)

Wanted signal mean power (dBm)

(Note 2)

Interfering signal mean power (dBm)

10, 15, 20, 25, 30, 40, 50, 60, 70, 80,90, 100 (Note 1)

EIS_minSENS + 6 dB

Wide Area IAB-MT: -52 – Δ_minSENS

Local Area IAB-MT: -44– Δ_minSENS

NOTE 1: The SCS for the lowest/highest carrier received is the lowest SCS supported by the IAB-MT for that bandwidth

NOTE 2: EIS_minSENS depends on the IAB-MT channel bandwidth

Table 7.5.1.5.4-2: OTA ACS interferer frequency offset for IAB-MT type 1-O

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	*Interfering signal centre frequency offset from the lower/upper IAB-MT RF Bandwidth edge* or sub-block edge inside a sub-block gap (MHz)**	Type of interfering signal
10	±2.5075	5 MHz CP-OFDM NR signal, 15 kHz SCS, 25 RBs
15	±2.5125
20	±2.5025
25	±9.4675	20 MHz CP-OFDM NR signal, 15 kHz SCS, 100 RBs
30	±9.4725
40	±9.4675
50	±9.4625
60	±9.4725
70	±9.4675
80	±9.4625
90	±9.4725
100	±9.4675

7.5.1.5.5 Test requirements for IAB-MT type 2-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to all supported polarizations, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For FR2, the OTA wanted and the interfering signal are specified in table 7.5.1.5.5-1 and table 7.5.1.5.5-2 for ACS. The reference measurement channel for the OTA wanted signal is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

The OTA ACS requirement is applicable outside the IAB-MT RF Bandwidth. The OTA interfering signal offset is defined relative to the IAB-MT RF Bandwidth edges.

For Wide Area IAB-MT, for RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA ACS requirement shall apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the NR interfering signal in table 7.5.1.5.5-2. The OTA interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

Table 7.5.1.5.5-1: OTA ACS requirement for Wide Area and Local Area IAB MT

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)

Wanted signal mean power (dBm)

Interfering signal mean power (dBm)

50, 100, 200, 400

EIS_REFSENS + 6 dB (Note 3)

EIS_{REFSENS_50M} + 27.7 + Δ_{FR2_REFSENS} (Note 1)

EIS_{REFSENS_50M} + 26.7 + Δ_{FR2_REFSENS} (Note 2)

NOTE 1: Applicable to bands defined within the frequency spectrum range of 24.25 – 33.4 GHz

NOTE 2: Applicable to bands defined within the frequency spectrum range of 37 – 52.6 GHz

NOTE 3: EIS_REFSENS is given in subclause 7.3.5.3

Table 7.5.1.5.5-2: OTA ACS interferer frequency offset for IAB-MT type 2-O

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper IAB-MT RF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	Type of interfering signal
50	±24.29	50 MHz CP-OFDM NR signal,60 kHz SCS, 64 RBs
100	±24.31
200	±24.29
400	±24.31

7.5.2 OTA in-band blocking

7.5.2.1 Definition and applicability

The OTA in-band blocking characteristics is a measure of the receiver’s ability to receive a OTA wanted signal at its assigned channel in the presence of an unwanted OTA interferer, which is an NR signal for general blocking or an NR signal with one RB for narrowband blocking.

7.5.2.2 Minimum requirement

For IAB-DU type 1-O, the minimum requirements are in TS 38.174 [2], clause 10.5.2.2.

For IAB-DU type 2-O , The minimum requirements are in TS 38.174 [2], clause 10.5.2.3.

For IAB-MT type 1-O, The minimum requirements are in TS 38.174 [2], clause 10.5.2.5.

For IAB-MT type 2-O, The minimum requirements are in TS 38.174 [2], clause 10.5.2.4

7.5.2.3 Test purpose

The test purpose is to verify the ability of the IAB receiver to withstand high-levels of in-band interference from unwanted signals at specified frequency offsets without undue degradation of its sensitivity.

7.5.2.4 Method of test

7.5.2.4.1 Initial conditions

Test environment: Normal, see annex B.2.

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

IAB RF Bandwidth edge position 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.

Directions to be tested:

For IAB type 1-O:

– receiver target reference direction for the minSENS OSDD (D.31),

– OTA REFSENS conformance test directions (D.55),

For IAB type 2-O:

– OTA REFSENS receiver target reference direction (D.54),

– OTA REFSENS conformance test directions (D.55).

7.5.2.4.2 Procedure

1) Place the IAB with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.3.

2) Align the manufacturer declared coordinate system orientation of the IAB with the test system.

3) Align the IAB with the test antenna in the declared direction to be tested.

4) Align the IAB to that the wanted signal and interferer signal is polarization matched with the test antenna(s).

5) Configure the beam peak direction for the transmitter according to the declared reference beam direction pair for the appropriate beam identifier.

6) Set the test signal mean power so that the calibrated radiated power at the IAB Antenna Array coordinate system reference point is as follows:

For general OTA blocking:

a) For IAB-DU type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.2-1.

For IAB-DU type 2-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.3-1.

For IAB-MT type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.4-1.

For IAB-MT type 2-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.5-1.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in table 7.5.2.5.2-1 and for the wanted signal of IAB-MT type 1-O to transmit in table 7.5.2.5.4-1.

For simultaneous operation tests for IAB type 2-O, set the signal generator for the wanted signal of IAB-DU type 2-O to transmit as specified in table 7.5.2.5.3-1 and for the wanted signal of IAB-MT type 2-O to transmit in table 7.5.2.5.5-1.b) For IAB-DU type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table 7.5.2.5.2-1. The interfering signal shall be swept with a step size of 1 MHz starting from the minimum offset to the channel edges of the wanted signals.

For IAB-DU type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table 7.5.2.5.3-1. The interfering signal shall be swept with a step size indicated in Table 7.5.2.4.2-1 starting from the minimum offset to the channel edges of the wanted signals.

For IAB-MT type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table 7.5.2.5.4-1. The interfering signal shall be swept with a step size of 1 MHz starting from the minimum offset to the channel edges of the wanted signals.

For IAB-MT type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table 7.5.2.5.5-1. The interfering signal shall be swept with a step size indicated in Table 7.5.2.4.2-1 starting from the minimum offset to the channel edges of the wanted signals.

For IAB simultaneous operation tests for IAB type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table table 7.5.2.5.4-1. The interfering signal shall be swept with a step size of 1 MHz starting from the minimum offset to the channel edges of the wanted signals.

For IAB simultaneous operation tests for IAB type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in table table 7.5.2.5.5-1. The interfering signal shall be swept with a step size indicated in Table 7.5.2.4.2-1 starting from the minimum offset to the channel edges of the wanted signals.

Table 7.5.2.4.2-1: FR2 Interferer signal step size

Minimum supported IAB channel bandwidth (MHz)	Measurement step size (MHz)
50	15
100	30
200	60
400	60

For OTA narrowband blocking:

a) For IAB-DU type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.2-2.

For IAB-DU type 2-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.3-2.

For IAB-MT type 1-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.4-2.

For IAB-MT type 2-O, set the signal generator for the wanted signal to transmit as specified in table 7.5.2.5.5-2.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in table 7.5.2.5.2-2 and for the wanted signal of IAB-MT type 1-O to transmit in table 7.5.2.5.4-2.

For simultaneous operation tests for IAB type 2-O, set the signal generator for the wanted signal of IAB-DU type 2-O to transmit as specified in table 7.5.2.5.3-2 and for the wanted signal of IAB-MT type 2-O to transmit in table 7.5.2.5.5-2.

b) For IAB-DU type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.2-2 and 7.5.2.5.2-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.2-3.

For IAB-DU type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.3-2 and 7.5.2.5.3-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.3-3.

For IAB-MT type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.4-2 and 7.5.2.5.4-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.4-3.

For IAB-MT type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.5-2 and 7.5.2.5.5-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.5-3.

For IAB simultaneous operation tests for IAB type 1-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.4-2 and 7.5.2.5.4-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.2-3.

For IAB simultaneous operation tests for IAB type 2-O, set the signal generator for the interfering signal at the specified frequency offset from the wanted signal to transmit as specified in tables 7.5.2.5.5-2 and 7.5.2.5.5-3. Set-up and sweep the interfering RB centre frequency offset to the channel edge of the wanted signal according to table 7.5.2.5.3-3.

8) Repeat steps 3 to 8 for all the specified measurement directions.

For multi-band RIB(s) and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carriers activated in the other band.

7.5.2.5 Test requirement

7.5.2.5.1 General

The test requirement is calculated from the OTA wanted signal mean power level offset by the OTA in-band blocking Test Tolerance specified in annex C.

7.5.2.5.2 Test requirements for IAB-DU type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction, and:

– when the wanted signal is based on EIS_REFSENS: the AoA of the incident wave of a received signal and the interfering signal are within the OTA REFSENS RoAoA.

– when the wanted signal is based on EIS_minSENS: the AoA of the incident wave of a received signal and the interfering signal are within the minSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel, with OTA wanted and OTA interfering signal specified in tables 7.5.2.5.2-1, table 7.5.2.5.2-2 and table 7.5.2.5.2-3 for general OTA and narrowband OTA blocking requirements. The reference measurement channel for the OTA wanted signal is identified in clause 7.3.5.2 and is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

The OTA in-band blocking requirements apply outside the IAB RF Bandwidth or Radio Bandwidth. The interfering signal offset is defined relative to the IAB RF Bandwidth edges or Radio Bandwidth edges.

For IAB-DU type 1-O the OTA in-band blocking requirement shall apply in the in-band blocking frequency range, which is defined within frequency range from F_{UL_low} – Δf_OOB to F_{UL_high} + Δf_OOB, where the Δf_OOB for IAB type 1-O is defined in table 7.5.2.5.2-0.

Table 7.5.2.5.2-0: Δf_OOB offset for NR operating bands in FR1

IAB-DU type	Operating band characteristics	Δf_OOB (MHz)
IAB-DU type 1-O	F_{UL_high} – F_{UL_low} < 100 MHz	20
	100 MHz ≤ F_{UL_high} – F_{UL_low} ≤ 900 MHz	60

For RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA in-band blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as twice the interfering signal minimum offset in table 7.5.2.5.2-1. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For multi-band RIBs, the OTA in-band blocking requirements apply in the in-band blocking frequency ranges for each supported operating band. The requirement shall apply in addition inside any Inter RF Bandwidth gap, in case the Inter RF Bandwidth gap size is at least as wide as twice the interfering signal minimum offset in tables 7.5.2.5.2-1 and 7.5.2.5.2-3.

For a RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA narrowband blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the interfering signal minimum offset in table 7.5.2.5.2-3. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For a multi-band RIBs, the OTA narrowband blocking requirements apply in the narrowband blocking frequency ranges for each supported operating band. The requirement shall apply in addition inside any Inter RF Bandwidth gap, in case the Inter RF Bandwidth gap size is at least as wide as the interfering signal minimum offset in table 7.5.2.5.2-3.

Table 7.5.2.5.2-1: General OTA blocking requirement for IAB-DU type 1-O

IAB-DU channel bandwidth of the	Wanted signal mean power (dBm)			Interfering signal mean	Interfering signal centre frequency minimum offset	Type of interfering
lowest/highest carrier received (MHz)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz	power (dBm)	from the lower/upper IAB RF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	signal
10, 15, 20	EIS_REFSENS + 6 dB (NOTE 2)			Wide Area IAB: -43 – Δ_OTAREFSENS Medium Range IAB: -38 – Δ_OTAREFSENS Local Area IAB: -35 – Δ_OTAREFSENS (NOTE 2)	±7.5	5 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
	EIS_minSENS + 6 dB (NOTE 3)			Wide Area IAB: -43 – Δ_minSENS Medium Range IAB: -38 – Δ_minSENS Local Area IAB: -35 – Δ_minSENS (NOTE 3)
25 ,30, 40, 50, 60, 70, 80, 90, 100	EIS_REFSENS + 6 dB (NOTE 2)			Wide Area IAB: -43 – Δ_OTAREFSENS Medium Range IAB: -38 – Δ_OTAREFSENS Local Area IAB: -35 – Δ_OTAREFSENS (NOTE 2)	±30	20 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 100 RBs
	EIS_minSENS + 6 dB (NOTE 3)			Wide Area IAB: -43 – Δ_minSENS Medium Range IAB: -38 – Δ_minSENS Local Area IAB: -35 – Δ_minSENS (NOTE 3)
NOTE 1: EIS_REFSENS and EIS_minSENS depends on the IAB-DU channel bandwidth as specified in TS 38.174 [2], clause 10.3.2 and 10.2.1. NOTE 2: This test requirement is only applied in the OTA REFSENS conformance test directions. NOTE 3: This test requirement is only applied in the OTA minSENS receiver target reference direction.

Table 7.5.2.5.2-2: OTA narrowband blocking requirement for IAB-DU type 1-O

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	OTA Wanted signal mean power (dBm)			OTA Interfering signal mean power (dBm)
	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz
10, 15, 20	EIS_REFSENS + 6 dB (NOTE 3)			Wide Area IAB: -49 – Δ_OTAREFSENS Medium Range IAB: -44 – Δ_OTAREFSENS Local Area IAB: -41 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB (NOTE 4)			Wide Area IAB: -49 – Δ_minSENS Medium Range IAB: -44 – Δ_minSENS Local Area IAB: -41 – Δ_minSENS
25, 30, 40, 50, 60, 70, 80, 90, 100	EIS_REFSENS + 6 dB (NOTE 3)			Wide Area IAB: -49 – Δ_OTAREFSENS Medium Range IAB: -44 – Δ_OTAREFSENS Local Area IAB: -41 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB (NOTE 4)			Wide Area IAB: -49 – Δ_minSENS Medium Range IAB: -44 – Δ_minSENS Local Area IAB: -41 – Δ_minSENS
NOTE 1: The SCS for the lowest/highest carrier received is the lowest SCS supported by the IAB-DU for that bandwidth. NOTE 2: EIS_REFSENS and EIS_minSENS depends on the IAB-DU channel bandwidth as specified in TS 38.174 [2], clause 10.3.2 and 10.2.1. NOTE 3: This test requirement is only applied in the OTA REFSENS conformance test directions. NOTE 4: This test requirement is only applied in the OTA minSENS receiver target reference direction. NOTE 5: 7.5 kHz shift is not applied to the wanted signal.

Table 7.5.2.5.2-3: OTA narrowband blocking interferer frequency offsets for IAB-DU type 1-O

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering RB centre frequency offset to the lower/upper IAB RF Bandwidth edge or sub-block edge inside a sub-block gap (kHz) (Note 2)	Type of interfering signal
10	±(355 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24	5 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 1 RB
15	±(360 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24
20	±(350 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24
25	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99	20 MHz DFT-s-OFDM NR signal, 15 kHz SCS, 1 RB
30	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
40	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
50	±(560 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
60	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
70	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
80	±(560 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
90	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
100	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
NOTE 1: Interfering signal consisting of one resource block is positioned at the stated offset, the channel bandwidth of the interfering signal is located adjacently to the lower/upper IAB RF Bandwidth edge. NOTE 2: The centre of the interfering RB refers to the frequency location between the two central subcarriers.

7.5.2.5.3 Test requirements for IAB-DU type 2-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For IAB-DU type 2-O, the OTA wanted and OTA interfering signals are provided at RIB using the parameters in table 7.5.2.5.3-1 for general OTA blocking requirements. The reference measurement channel for the OTA wanted signal is identified in clause 7.3.5.3 and is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

The OTA blocking requirements are applicable outside the IAB RF Bandwidth. The interfering signal offset is defined relative to the IAB RF Bandwidth edges.

For IAB-DU type 2-O the OTA blocking requirement shall apply in the in-band blocking frequency range, which is defined within frequency range from F_{UL_low} – Δf_OOB to F_{UL_high} + Δf_OOB,where the Δf_OOB for IAB-DU type 2-O is defined in table 7.5.2.5.3-0.

Table 7.5.2.5.3-0: Δf_OOB offset for NR operating bands in FR2

IAB-DU type	Operating band characteristics	Δf_OOB (MHz)
IAB-DU type 2-O	F_{UL_high} – F_{UL_low} ≤ 4000 MHz	1500

For a RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as twice the interfering signal minimum offset in table 7.5.2.5.3-1. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

Table 7.5.2.5.3-1: General OTA blocking requirement for IAB-DU type 2-O

IAB-DU channel bandwidth of the	OTA wanted signal mean power (dBm)		OTA interfering signal mean	OTA interfering signal centre	Type of OTA interfering
lowest/highest carrier received (MHz)	24.24 GHz < f ≤ 33.4 GHz	37 GHz < f ≤ 52.6 GHz	power (dBm)	frequency offset from the lower/upper IAB RF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	signal
50, 100, 200, 400	EIS_REFSENS + 6 dB	EIS_REFSENS + 6 dB	EIS_{REFSENS_50M} + 33 + Δ_{FR2_REFSENS} dB	±75	50 MHz DFT-s-OFDM NR signal, 60 kHz SCS, 64 RBs
NOTE: EISREFSENS and EISREFSENS_50M are given in TS 38.104 [2], clause 10.3.3.

7.5.2.5.4 Test requirements for IAB-MT type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction, and:

– when the wanted signal is based on EIS_REFSENS: the AoA of the incident wave of a received signal and the interfering signal are within the OTA REFSENS RoAoA.

– when the wanted signal is based on EIS_minSENS: the AoA of the incident wave of a received signal and the interfering signal are within the minSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel, with OTA wanted and OTA interfering signal specified in tables 10.5.2.5-1, table 10.5.2.5-2 and table 10.5.2.5-3 for general OTA and narrowband OTA blocking requirements. The reference measurement channel for the OTA wanted signal is identified in clause 10.3.3 and are further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

The OTA in-band blocking requirements apply outside the IAB-MT RF Bandwidth or Radio Bandwidth. The interfering signal offset is defined relative to the IAB-MT RF Bandwidth edges or Radio Bandwidth edges.

For IAB-MT type 1-O the OTA in-band blocking requirement shall apply in the in-band blocking frequency range, which is from F_DL,low – Δf_OOB to F_DL,high + Δf_OOB.. The Δf_OOB for wide area IAB-MT type 1-O is defined in table 10.5.2.5-0.

Table 7.5.2.5.4-0: Δf_OOB offset for NR operating bands in FR1

IAB-MT type	Operating band characteristics	Δf_OOB (MHz)
IAB-MT type 1-O	F_DL,high – F_DL,low < 100 MHz	20
	100 MHz ≤ F_DL,high – F_DL,low ≤ 900 MHz	60

For RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA in-band blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as twice the interfering signal minimum offset in table 10.5.2.2-1. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For a RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA narrowband blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as the interfering signal minimum offset in table 10.5.2.5-3. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

Table 7.5.2.5.4-1: General OTA blocking requirement for IAB-MT type 1-O

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	Wanted signal mean power (dBm)	Interfering signal mean power (dBm)	Interfering signal centre frequency minimum offset from the lower/upper IAB-MT RF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	Type of interfering signal
10, 15, 20	EIS_REFSENS + 6 dB	Wide Area IAB-MT: -43 – Δ_OTAREFSENS Local Area IAB-MT: -35 – Δ_OTAREFSENS	±7.5	5 MHz CP-OFDM NR signal, 15 kHz SCS, 25 RBs
	EIS_minSENS + 6 dB	Wide Area IAB-MT: -43 – Δ_minSENS Local Area IAB-MT: -35 – Δ_minSENS	±7.5
25 ,30, 40, 50, 60, 70, 80, 90, 100	EIS_REFSENS + 6 dB	Wide Area IAB-MT: -43 – Δ_OTAREFSENS Local Area IAB-MT: -35 – Δ_OTAREFSENS	±30	20 MHz CP-OFDM NR signal, 15 kHz SCS, 100 RBs
	EIS_minSENS + 6 dB	Wide Area IAB-MT: -43 – Δ_minSENS Local Area IAB-MT: -35 – Δ_minSENS	±30

Table 7.5.2.5.4-2: OTA narrowband blocking requirement for IAB-MT type 1-O

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	OTA Wanted signal mean power (dBm)	OTA Interfering signal mean power (dBm)
10, 15, 20	EIS_REFSENS + 6 dB	Wide Area IAB-MT: -49 – Δ_OTAREFSENS Local Area IAB-MT: -41 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB	Wide Area IAB-MT: -49 – Δ_minSENS Local Area IAB-MT: -41 – Δ_OTAREFSENS
25, 30, 40, 50, 60, 70, 80, 90, 100	EIS_REFSENS + 6 dB	Wide Area IAB-MT: -49 – Δ_OTAREFSENS Local Area IAB-MT: -41 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB	Wide Area IAB-MT: -49 – Δ_minSENS Local Area IAB-MT: -41 – Δ_OTAREFSENS
NOTE 1: The SCS for the lowest/highest carrier received is the lowest SCS supported by the IAB-MT for that bandwidth. NOTE 2: 7.5 kHz shift is not applied to the wanted signal.

Table 7.5.2.5.4-3: OTA narrowband blocking interferer frequency offsets for IAB-MT type 1-O

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	Interfering RB centre frequency offset to the lower/upper IAB-MT RF Bandwidth edge or sub-block edge inside a sub-block gap (kHz) (Note 2)	Type of interfering signal
10	±(355 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24	5 MHz CP-OFDM NR signal, 15 kHz SCS, 1 RB
15	±(360 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24
20	±(350 + m*180), m=0, 1, 2, 3, 4, 9, 14, 19, 24
25	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99	20 MHz CP-OFDM NR signal, 15 kHz SCS, 1 RB
30	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
40	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
50	±(560 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
60	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
70	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
80	±(560 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
90	±(570 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
100	±(565 + m*180), m=0, 1, 2, 3, 4, 29, 54, 79, 99
NOTE 1: Interfering signal consisting of one resource block is positioned at the stated offset, the channel bandwidth of the interfering signal is located adjacently to the lower/upper IAB-MT RF Bandwidth edge or sub-block edge inside a sub-block gap. NOTE 2: The centre of the interfering RB refers to the frequency location between the two central subcarriers.

7.5.2.5.5 Test requirements for IAB-MT type 2-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For Wide Area IAB-MT type 2-O, the OTA wanted and OTA interfering signals are provided at RIB using the parameters in table 7.5.2.5.5-1 for general OTA blocking requirements. The reference measurement channel for the wanted signal is further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

The OTA blocking requirements are applicable outside the IAB-MT RF Bandwidth. The interfering signal offset is defined relative to the IAB-MT RF Bandwidth edges.

For Wide Area IAB-MT type 2-O the OTA in-band blocking requirement shall apply from F_{DL_low} – Δf_OOB to F_{DL_high} + Δf_OOB. The Δf_OOB for IAB-MT type 2-O is defined in table 7.5.2.5.5-0.

Table 7.5.2.5.5-0: Δf_OOB offset for NR operating bands for Wide Area IAB-MT in FR2

IAB-MT type	Operating band characteristics	Δf_OOB (MHz)
IAB-MT type 2-O	F_{DL_high} – F_{DL_low} ≤ 3250 MHz	1500

For Wide Area IAB-MT and for a RIBs supporting operation in non-contiguous spectrum within any operating band, the OTA blocking requirements apply in addition inside any sub-block gap, in case the sub-block gap size is at least as wide as twice the interfering signal minimum offset in table 7.5.2.5.5-1. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

Table 7.5.2.5.5-1: General OTA blocking requirement for Widea Area IAB-MT

IAB MT channel bandwidth of the lowest/highest carrier received (MHz)

OTA wanted signal mean power (dBm)

OTA interfering signal mean power (dBm)

OTA interfering signal centre frequency offset

from the lower/upper IAB MT [ RF Bandwidth] edge or sub-block edge inside a sub-block gap (MHz)

Type of OTA interfering signal

50, 100, 200, 400

EIS_REFSENS + 6 dB

EIS_{REFSENS_50M} + 33 + Δ_{FR2_REFSENS}

±75

50 MHz CP-OFDM NR signal,

60 kHz SCS, 64 RBs

NOTE: EIS_REFSENS and EIS_{REFSENS_50M} are given in subclause 10.3.3.

7.6 OTA out-of-band blocking

7.6.1 Definition and applicability

The OTA out-of-band blocking characteristics are a measure of the receiver unit ability to receive a wanted signal at the RIB at its assigned channel in the presence of an unwanted interferer.

For the general OTA out-of-band blocking the requirement applies to the wanted signal for each supported polarization, under the assumption of polarization match. The interferer shall be polarization matched for in-band frequencies and the polarization maintained for out-of-band frequencies.

7.6.2 Minimum requirement

For IAB type 1-O, the minimum requirements are defined in TS 38.174 [2], clause 10.6.2. Co-location minimum requirements are defined in TS 38.174[2], clause 10.6.4.

For IAB type 2-O, the minimum requirements are defined in TS 38.174 [2], clause 10.6.3.

7.6.3 Test purpose

The test stresses the ability of the receiver unit associated with the RIB under test to withstand high-level interference from unwanted signals at specified frequency bands, without undue degradation of its sensitivity.

7.6.4 Method of test

7.6.4.1 Initial conditions

Test environment: Normal; see annex B.2.

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

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

– M_RFBW in single-band RIB, see clause 4.9.1; B_RFBW_T’_RFBW and B’_RFBW_T_RFBWin multi-band RIB, see clause 4.9.1.

In addition, for multi-band RIB:

– For B_RFBW_T’_RFBW, blocking testing above the highest operating band may be omitted.

– For B’_RFBW_T_RFBW, blocking testing below the lowest operating band may be omitted.

Directions to be tested:

– For IAB type 1-O, receiver target reference direction (D.31).

– For IAB type 2-O, OTA REFSENS receiver target reference direction (D.54).

7.6.4.2 Procedure

7.6.4.2.1 IAB type 1-O procedure for out-of-band blocking

1) Place IAB and the test antenna(s) according to annex E.2.4.1.

2) Align the IAB and test antenna(s) according to the directions to be tested.

3) Connect test antenna(s) to the measurement equipment as shown in annex E.2.4.1.

4) The test antenna(s) shall be dual (or single) polarized covering the same frequency ranges as the IAB and the blocking frequencies. If the test antenna does not cover both the wanted and interfering signal frequencies, separate test antennas for the wanted and interfering signal are required.

5) The OTA blocking interferer is injected into the test antenna, with the blocking interfererproducing specified interferer field strength level for each supported polarization. The interferer shall be polarization matched in-band and the polarization maintained for out-of-band frequencies.

6) Generate the wanted signal in receiver target reference direction, according to the applicable test configuration (see clause 4.8) using applicable reference measurement channel to the RIB, according to annex A.1.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in table 7.6.5.1.1-1 and for the wanted signal of IAB-MT type 1-O to transmit in table 7.6.5.1.1-1.7) Adjust the signal generators to the type of interfering signals, levels and the frequency offsets as specified for general test requirements in table 7.6.5.1.1-1. The distance between the test object and test antenna injecting the interferer signal is adjusted when necessary to ensure specified interferer signal level to be received.

8) The CW interfering signal shall be swept with a step size of 1 MHz within the frequency range specified in clause 7.6.5.1.1.

9) Measure the performance of the wanted signal at the receiver unit associated with the RIB, as defined in the clause 7.6.5, for the relevant carriers specified by the test configuration in clause 4.7 and 4.8.

10) Repeat for all supported polarizations.

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

11) For multi-band RIB 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.

7.6.4.2.2 IAB type 1-O procedure for co-location blocking

1) Place NR IAB and CLTA as specified in clause 4.12.2.3.

2) Several CLTA are required to cover the whole co-location blocking frequency ranges. The CLTA shall be selected according to clause 4.12.2.2.

3) Align the NR IAB and test antenna(s) according to the directions to be tested.

4) Connect test antenna and CLTA to the measurement equipment as depicted in annex E.2.4.2.

5) The NR IAB receives the wanted signal in all supported polarizations, in the receiver target reference direction from the test antenna.

6) The OTA co-location blocking interferer is injected via the CLTA. The CLTA is fed with the specified co-location blocking interferer power per supported polarization.

7) Generate the wanted signal in receiver target reference direction, all supported polarizations, from the test antenna, according to the applicable test configuration (see clause 4.8) using applicable reference measurement channel to the RIB, according to annex A.1.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in Table 7.6.5.1.2-1and for the wanted signal of IAB-MT type 1-O to transmit in Table 7.6.5.1.2-1.

8) Adjust the signal generators to the type of interfering signals, levels and the frequency offsets as specified for general test requirements in table 7.6.5.1.1-1 and, when applicable, for co-location test requirements in table 7.6.5.1.2-1.

9) The CW interfering signal shall be swept with a step size of 1 MHz within the frequency range corresponding to downlink operating bands related to co-located systems (according to declaration D.43).

10) Measure the performance of the wanted signal at the receiver unit associated with the RIB, as defined in the clause 7.6.5, for the relevant carriers specified by the test configuration in clause 4.7 and 4.8.

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

11) For multi-band RIB 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.

7.6.4.2.3 IAB type 2-O procedure for out-of-band blocking

1) Place IAB and the test antenna(s) according to annex E.2.4.1.

2) Align the IAB and test antenna(s) according to the directions to be tested.

3) Connect test antenna(s) to the measurement equipment as shown in annex E.2.4.1.

6) Generate the wanted signal, according to the applicable test configuration (see clause 4.7 and 4.8) using applicable reference measurement channel to the RIB, according to annex A.1.

For simultaneous operation tests for IAB type 1-O, set the signal generator for the wanted signal of IAB-DU type 1-O to transmit as specified in Table 7.6.5.2.1-1 and for the wanted signal of IAB-MT type 1-O to transmit in Table 7.6.5.2.1-1.

7) Adjust the signal generators to the type of interfering signals, levels and the frequency offsets as specified for general test requirements in table 7.6.5.2.1-1. The distance between the test object and test antenna injecting the interferer signal is adjusted when necessary to ensure specified interferer signal level to be received.

8) The interfering signal shall be swept within the frequency range specified in table 7.6.5.2.1-1 with the step size specified in table 7.6.4.2.3-1.

Table 7.6.4.2.3-1: Interferer signal step size

Frequency range (MHz)	Minimum supported IAB channel bandwidth (MHz)	Measurement step size (MHz)
30 to 6000	50, 100, 200, 400	1
6000 to 60000	50	15
	100	30
	200	60
	400	60

10) Repeat for all supported polarizations.

7.6.5 Test requirements

7.6.5.1 Requirement for IAB Type 1-O

The test requirement consists of general and co-location requirements.

7.6.5.1.1 General

For OTA wanted and OTA interfering signals provided at the RIB using the parameters in table 7.6.5.1.1-1, the following requirements shall be met:

– The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel. The reference measurement channel for the OTA wanted signal is identified in clause 10.3.2 in TS 38.104 [4] for each IAB channel bandwidth and further specified in annex A.1.

For a multi-band RIB, the OTA out-of-band requirement shall apply for each supported operating band, with the exception that the in-band blocking frequency ranges of all supported operating bands according to clause 7.4.2.2 in TS 38.104 [4] shall be excluded from the OTA out‑of‑band blocking requirement.

For IAB type 1-O the OTA out-of-band blocking requirement apply from 30 MHz to F_{UL_low} – Δf_OOB and from F_{UL_high} + Δf_OOB up to 12750 MHz. The Δf_OOB for IAB type 1-O is defined in table 7.5.2.5.2-0.

Table 7.6.5.1.1-1: OTA out-of-band blocking performance requirement

Wanted signal mean power

(dBm)

Interfering signal RMS field-strength

(V/m)

Type of interfering signal

EIS_minSENS + 6 dB

(Note 1)

0.36 V/m

CW carrier

NOTE 1: EIS_minSENS depends on the channel bandwidth as specified in TS 38.104 [4], clause 10.2.1.

NOTE 2: The RMS field-strength level in V/m is related to the interferer EIRP level at a distance described as , where EIRP is in W and r is in m; for example, 0.36 V/m is equivalent to 36 dBm at fixed distance of 30 m.

7.6.5.1.2 Co-location requirement

This additional OTA out-of-band blocking requirement may be applied for the protection of IAB receivers when NR, E‑UTRA BS, UTRA BS, CDMA BS , GSM/EDGE BS or IAB-DU and/or IAB-MT operating in a different frequency band are co-located with an IAB-Node.

The requirement is a co-location requirement. The interferer power levels are specified at the co-location reference antenna conducted input. The interfering signal power is specified per supported polarization.

The requirement is valid over the minSENS RoAoA.

For OTA wanted and OTA interfering signal provided at the RIB using the parameters in table 7.6.5.1.2-1, the following requirements shall be met:

– The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel. The reference measurement channel for the OTA wanted signal is identified in TS 38.174 [2] clause 10.3 for each IAB channel bandwidth and further specified in annex A.1. The characteristics of the interfering signal is further specified in annex H.

For IAB type 1-O the OTA blocking requirement for co-location with BS or IAB-Node in other frequency bands is applied for all operating bands for which co-location protection is provided.

Table 7.6.5.1.2-1: OTA blocking requirement for co-location with BS or IAB-Node in other frequency bands

Frequency range of interfering signal	Wanted signal mean power (dBm)	Interfering signal mean power for WA IAB-Node (dBm)	Interfering signal mean power for MR IAB-Node (dBm)	Interfering signal mean power for LA IAB-Node (dBm)	Type of interfering signal
Frequency range of co-located downlink operating band	EIS_minSENS + 6 dB (Note 1)	+46	+38	+24	CW carrier
NOTE 1: EIS_minSENS depends on the IAB class and on the IAB channel bandwidth, see TS 38.174 [2] clause 10.3. NOTE 2: The requirement does not apply when the interfering signal falls within any of the supported downlink operating band(s) or in Δf_OOB immediately outside any of the supported downlink operating band(s).

Frequency range of interfering signal

Wanted signal mean power (dBm)

Interfering signal mean power for WA IAB-Node (dBm)

Interfering signal mean power for MR IAB-Node (dBm)

Interfering signal mean power for LA IAB-Node (dBm)

Type of interfering signal

Frequency range of co-located downlink operating band

EIS_minSENS + 6 dB

(Note 1)

+46

+38

+24

CW carrier

NOTE 1: EIS_minSENS depends on the IAB class and on the IAB channel bandwidth, see TS 38.174 [2] clause 10.3.

NOTE 2: The requirement does not apply when the interfering signal falls within any of the supported downlink operating band(s) or in Δf_OOB immediately outside any of the supported downlink operating band(s).

7.6.5.2 Requirement for IAB type 2-O

The test requirement consists of general requirements.

7.6.5.2.1 General requirement

For OTA wanted and OTA interfering signals provided at the RIB using the parameters in table 7.6.5.2.1-1, the following requirements shall be met:

– The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel. The reference measurement channel for the OTA wanted signal is identified in clause 10.3.3 in TS 38.174 [2] for each IAB channel bandwidth and further specified in annex A.1.

For IAB type 2-O the OTA out-of-band blocking requirement apply from 30 MHz to F_{UL_low} – Δf_OOB and from F_{UL_high} + Δf_OOB up to min(2^nd harmonic of the upper frequency edge of the operating band, 60 GHz). The Δf_OOB for IAB type 2-O is defined in table 7.5.2.5.3-0.

Table 7.6.5.2.1-1: OTA out-of-band blocking performance requirement

Frequency range of interfering signal (MHz)	Wanted signal mean power (dBm)	Interferer RMS field-strength (V/m)	Type of interfering signal
30 to 12750	EIS_REFSENS + 6 dB	0.36	CW carrier
12750 to F_{UL_low}– Δf_OOB		0.1
F_{UL_high}+ Δf_OOB to min(2^nd harmonic of the upper frequency edge of the operating band, 60000)		0.1
NOTE: EIS_REFSENS is given in TS 38.174 [2], clause 10.3.3.

7.7 OTA receiver spurious emissions

7.7.1 Definition and applicability

The OTA RX spurious emission is the power of the emissions radiated from the antenna array from a receiver unit.

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

The OTA receiver spurious emission limits for FR1 shall apply from 30 MHz 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 clause [6.7.1]. For some operating bands, the upper limit of the spurious range might be 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 [10].

For multi-band RIB the above exclusion applies for each supported operating band.

The OTA receiver spurious emission limits for FR2 shall apply from 30 MHz to 2^nd harmonic of the upper frequency edge of the uplink operating band, 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 clause [6.7.1].

For a IAB operating in TDD, the OTA RX spurious emissions requirement shall apply during the transmitter OFF period only.

The metric used to capture OTA receiver spurious emissions for IAB type 1-O and IAB type 2-O is total radiated power (TRP), with the requirement defined at the RIB.

7.7.2 Minimum requirement

The minimum requirement for IAB-DU type 1-O is specified in TS 38.174 [2], clause 10.7.1.2.

The minimum requirement for IAB-DU type 2-O is specified in TS 38.174 [2], clause 10.7.2.2.

The minimum requirement for IAB-MT type 1-O is specified in TS 38.174 [2], clause 10.7.3.1.

The minimum requirement for IAB-MT type 2-O is specified in TS 38.174 [2], clause 10.7.3.2.

7.7.3 Test purpose

The test purpose is to verify if the receiver radiated spurious emissions from the IAB at the RIB are within the specified minimum requirements.

7.7.4 Method of test

7.7.4.1 Initial conditions

Test environment: Normal; see annex B.2.

RF channels to be tested for single carrier, see clause 4.9.1:

– For FR1:

– B when testing from 30 MHz to F_{DL_low} – Δf_OBUE

– T when testing from F_{DL_high} + Δf_OBUE to 12.75 GHz (or to 5^th harmonic)

– For FR2:

– B when testing from 30 MHz to F_{DL_low} – Δf_OBUE

– T when testing from F_{DL_high} + Δf_OBUE to 2^nd harmonic (or to 60 GHz)

RF bandwidth positions to be tested in single-band operation, see clause 4.9.1:

– For FR1:

– B_RFBW when testing from 30 MHz to F_{DL_low} – Δf_OBUE

– T_RFBW when testing from F_{DL_high} + Δf_OBUE to 12.75 GHz (or to 5^th harmonic)

– For FR2:

– B_RFBW when testing from 30 MHz to F_{DL_low} – Δf_OBUE

– T_RFBW when testing from F_{DL_high} + Δf_OBUE to 2^nd harmonic (or to 60 GHz)

RF bandwidth positions to be tested in multi-band operation, see clause 4.9.1:

– For FR1:

– B_RFBW_T’_RFBW when testing from 30 MHz to F_{DL_Blow_low} – Δf_OBUE

– B’_RFBW_T_RFBW when testing from F_{DL_Bhigh_high} + Δf_OBUE to 12.75 GHz (or to 5^th harmonic)

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW when testing from F_{DL_Blow_high} + Δf_OBUE to F_{DL_Bhigh_low} – Δf_OBUE

Directions to be tested: As the requirement is TRP the beam pattern(s) may be set up to optimise the TRP measurement procedure (see annex I) as long as the required TRP level is achieved.

7.7.4.2 Procedure

The following procedure for measuring TRP is based on the directional power measurements as described in annex I. An alternative method to measure TRP is to use a characterized and calibrated reverberation chamber if so follow steps 1, 3, 4, 5, 7 and 10.

1) Place the IAB at the positioner.

2) Align the manufacturer declared coordinate system orientation (D.2) of the IAB with the test system.

3) Measurements shall use a measurement bandwidth in accordance to the conditions in clause 7.7.5.

4) The measurement device characteristics shall be:

– Detection mode: True RMS.

5) Set the TDD IAB to receive only. For IAB type 1-O and IAB type 2-O supporting simultaneous reception of IAB-DU and IAB-MT (D.IAB-3), both IAB-DU and IAB-MT shall be configured to simultaneously receive only during the test.

6) Orient the positioner (and IAB) in order that the direction to be tested aligns with the test antenna such that measurements to determine TRP can be performed (see annex I).

7) Measure the emission at the specified frequencies with specified measurement bandwidth

8) Repeat step 6-9 for all directions in the appropriated TRP measurement grid needed for full TRP estimation (see annex I).

NOTE 1: The TRP measurement grid may not be the same for all measurement frequencies.

NOTE 2: The frequency sweep or the TRP measurement grid sweep may be done in any order

9) Calculate TRP at each specified frequency using the directional measurements.

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

10) For IAB type 1-O and multi-band RIB(s) 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.

7.7.5 Test requirement

7.7.5.1 Test requirement for IAB type 1-O

For RX only multi-band RIB, the OTA receiver spurious emissions requirements are subject to exclusion zones in each supported operating band.

The power of any spurious emission shall not exceed the levels in table 7.7.5.1-1:

Table 7.7.5.1-1: General OTA receiver spurious emission limits for IAB type 1-O

Spurious frequency range	Test limits (Note 6, Note 8)	Measurement bandwidth	Notes
30 MHz – 1 GHz	-36 + X dBm	100 kHz	Note 1, Note 6
1 GHz – 6 GHz	-30 + X dBm	1 MHz	Note 1, Note 2, Note 6
12.75 GHz – 5^th harmonic of the upper frequency edge of the UL operating band in GHz	-30 + X dBm	1 MHz	Note 1, Note 2, Note 3, Note 6
NOTE 1: Measurement bandwidths as in ITU-R SM.329 [10], s4.1. NOTE 2: Upper frequency as in ITU-R SM.329 [10], s2.5 table 1. NOTE 3: 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: The frequency range from Δf_OBUE below the lowest frequency of the IAB transmitter operating band to Δf_OBUE above the highest frequency of the IAB transmitter operating band may be excluded from the requirement. Δf_OBUE is defined in clause 6.7.1. For multi-band RIBs, the exclusion applies for all supported operating bands. NOTE 5: Void NOTE 6: X = 9 dB, unless stated differently in regional regulation. NOTE 7: Void NOTE 8: Additional limits may apply regionally.

7.7.5.2 Test requirement for IAB type 2-O

The power of any receiver spurious emission shall not exceed the limits in table 7.7.5.2-1.

Table 7.7.5.2-1: Radiated Rx spurious emission limits for IAB type 2-O

Spurious frequency range (Note 4)	Limit (Note 5)	Measurement Bandwidth	Note
30 MHz ↔ 1 GHz	-36 dBm	100 kHz	Note 1
1 GHz ↔ 18 GHz	-30 dBm	1 MHz	Note 1
18 GHz ↔ F_step,1	-20 dBm	10 MHz	Note 2
F_step,1↔ F_step,2	-15 dBm	10 MHz	Note 2
F_step,2 ↔ F_step,3	-10 dBm	10 MHz	Note 2
F_step,4↔ F_step,5	-10 dBm	10 MHz	Note 2
F_step,5↔ F_step,6	-15 dBm	10 MHz	Note 2
F_step,6 ↔ min(2^nd harmonic of the upper frequency edge of the UL operating band in GHz; 60 GHz)	-20 dBm	10 MHz	Note 2, Note 3
NOTE 1: Bandwidth as in ITU-R SM.329 [10], s4.1. NOTE 2: Limit and bandwidth as in ERC Recommendation 74-01 [11], Annex 2. NOTE 3: Upper frequency as in ITU-R SM.329 [10], s2.5 table 1. NOTE 4: The step frequencies F_step,X are defined in table 7.7.5.2-2. NOTE 5: Additional limits may apply regionally.

Table 7.7.5.2-2: Step frequencies for defining the radiated Rx spurious emission limits
for IAB-DU type 2-O

Operating band	F_step,1 (GHz)	F_step,2 (GHz)	F_step,3 (GHz)	F_step,4 (GHz)	F_step,5 (GHz)	F_step,6 (GHz)
n257	18	23.5	25	31	32.5	41.5
n258	18	21	22.75	29	30.75	40.5
n259	23.5	35.5	38	45	47.5	59.5
n260	25	34	35.5	41.5	43	52
n261	18	25.5	26.0	29.85	30.35	38.35

In addition, the following requirement may be applied for protection of EESS for IAB operating in frequency range 24.25 – 27.5 GHz.

The power of any receiver spurious emission shall not exceed the limits in Table 7.7.5.2-3.

Table 7.7.5.2-3: Limits for protection of Earth Exploration Satellite Service

Frequency range	Limit	Measurement Bandwidth	Note
23.6 – 24 GHz	-3 dBm	200 MHz	Note 1
23.6 – 24 GHz	-9 dBm	200 MHz	Note 2
NOTE 1: This limit applies to IAB brought into use on or before 1 September 2027 and enters into force from [January 1], 2021. NOTE 2: This limit applies to IAB brought into use after 1 September 2027.

7.8 OTA receiver intermodulation

7.8.1 Definition and applicability

Third and higher order mixing of the two interfering RF signals can produce an interfering signal in the band of the desired channel. Intermodulation response rejection is a measure of the capability of the receiver unit to receive a wanted signal on its assigned channel frequency in the presence of two interfering signals which have a specific frequency relationship to the wanted signal. The requirement is defined as a directional requirement at the RIB.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

7.8.2 Minimum requirement

The minimum requirements for IAB-DU type 1-O are in TS 38.174 [2], clause 10.8.2.

The minimum requirements for IAB-DU type 2-O are in TS 38.174 [2], clause 10.8.3.

The minimum requirements for IAB-MT type 1-O are in TS 38.174 [2], clause 10.8.4.

7.8.3 Test purpose

The test purpose is to verify the ability of the IAB receiver to inhibit the generation of intermodulation products in its non-linear elements caused by the presence of two high-level interfering signals at frequencies with a specific relationship to the frequency of the wanted signal.

7.8.4 Method of test

7.8.4.1 Initial conditions

Test environment: Normal, 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_RFBW for single-band operation, see clause 4.9.1.

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

Directions to be tested:

– OTA REFSENS receiver target reference direction (D.54).

– In addition, for IAB type 1-O, receiver target reference direction (D.31).

7.8.4.2 Procedure

1) Place the IAB with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.6.

2) Align the manufacturer declared coordinate system orientation of the IAB with the test system.

3) Align the IAB with the test antenna in the declared direction to be tested.

4) Align the IAB to that the wanted signal and interferer signal is polarization matched with the test antenna(s).

5) Configure the beam peak direction of the IAB according to declared reference beam direction pair for the appropriate beam identifier.

6) Set the test signal mean power so the calibrated radiated power at the IAB Antenna Array coordinate system reference point is as specified as follows:

a) Set the signal generator for the wanted signal to transmit as specified in sub-clause 7.8.5.1 for IAB-DU type 1-O, sub-clause 7.8.5.2 for IAB-DU type 2-O and sub-clause 7.8.5.3 for IAB-MT type 1-O.

b) Set the signal generator for the interfering signal at the same frequency as the wanted signal to transmit as specified in sub-clause 7.8.5.1 for IAB-DU type 1-O, sub-clause 7.8.5.2 for IAB-DU type 2-O and sub-clause 7.8.5.3 for IAB-MT type 1-O.

7) Set the signal generator for the interfering signal to transmit at the frequency offset and as specified in sub-clause 7.8.5.1 for IAB-DU type 1-O, sub-clause 7.8.5.2 for IAB-DU type 2-O and sub-clause 7.8.5.3 for IAB-MT type 1-O.

8) Measure the throughput according to annex A.1 for each supported polarization, for multi-carrier and/or CA operation the throughput shall be measured for relevant carriers specified by the test configuration specified in clause 4.7. For an IAB type 1-O node declared to be capable of Simultaneous reception between IAB-DU and IAB-MT (D.IAB-3) the throughput shall be measured for both IAB-MT and IAB-DU according to applicable test singal configuration and test models specified in clauses 4.7.2 and 4.8.

9) Repeat for all the specified measurement directions and supported polarizations.

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

10) For multi-band RIBs 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.

7.8.5 Test requirement

7.8.5.1 IAB-DU type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction, and:

– when the wanted signal is based on EIS_REFSENS: the AoA of the incident wave of a received signal and the interfering signal are within the FR1 OTA REFSENS RoAoA.

– when the wanted signal is based on EIS_minSENS: the AoA of the incident wave of a received signal and the interfering signal are within the minSENS RoAoA.

The throughputshall be ≥ 95% of the maximum throughput of the reference measurement channel, with a wanted signal at the assigned channel frequency and two interfering signals at the RIB with the conditions specified in tables 7.8.5.1-1 and 7.8.5.1-2 for intermodulation performance and in tables 7.8.5.1-3 and 7.8.5.1-4 for narrowband intermodulation performance.

The reference measurement channel for the wanted signal is identified in table 7.3.5.2-1, table 7.3.5.2-2 and table 7.3.5.2-3 for each IAB-DU channel bandwidth and further specified in annex A.1.

The subcarrier spacing for the modulated interfering signal shall be the same as the subcarrier spacing for the wanted signal, except for the case of wanted signal subcarrier spacing 60 kHz and IAB-DU channel bandwidth ≤ 20 MHz, for which the subcarrier spacing of the interfering signal should be 30 kHz.

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

For a RIBs supporting operation in non-contiguous spectrum within any operating band, the narrowband intermodulation requirement shall apply in addition inside any sub-block gap in case the sub-block gap is at least as wide as the IAB-DU channel bandwidth of the NR interfering signal in tables 7.8.5.1-2 and 7.8.5.1-4. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For multi-band RIBs, the intermodulation requirement shall apply in addition inside any Inter RF Bandwidth gap, in case the gap size is at least twice as wide as the NR interfering signal centre frequency offset from the IAB-DU RF Bandwidth edge.

For multi-band RIBs, the narrowband intermodulation requirement shall apply in addition inside any Inter RF Bandwidth gap in case the gap size is at least as wide as the NR interfering signal in tables 7.8.5.1-2 and 7.8.5.1-4. The interfering signal offset is defined relative to the IAB-DU RF Bandwidth edges inside the Inter RF Bandwidth gap.

Table 7.8.5.1-1: General intermodulation requirement

IAB-DU class	Wanted Signal mean power (dBm)	Mean power of interfering signals (dBm)	Type of interfering signal
Wide Area	EIS_REFSENS + 6 dB	-52 – Δ_OTAREFSENS	See table 7.8.5.1-2
	EIS_minSENS + 6 dB	-52 – Δ_minSENS
Medium Range	EIS_REFSENS + 6 dB	-47 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB	-47 – Δ_minSENS
Local Area	EIS_REFSENS + 6 dB	-44 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB	-44 – Δ_minSENS
NOTE: EIS_REFSENS and EIS_minSENS depend on the IAB-DU class and on the IAB-DU channel bandwidth as specified in TS 38.174 [2], clause 10.2.1.1 and 10.3.2.1.

Table 7.8.5.1-2: Interfering signals for intermodulation requirement

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper IAB-DU RF Bandwidth edge (MHz)	Type of interfering signal (Note 3)
10	±7.465	CW
	±17.5	5MHz DFT-s-OFDM NR signal (Note 1)
15	±7.43	CW
	±17.5	5MHz DFT-s-OFDM NR signal (Note 1)
20	±7.395	CW
	±17.5	5MHz DFT-s-OFDM NR signal (Note 1)
25	±7.465	CW
	±25	20 MHz DFT-s-OFDM NR signal (Note 2)
30	±7.43	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
40	±7.45	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
50	±7.35	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
60	±7.49	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
70	±7.42	CW
	±25	20 MHz DFT-s-OFDM NR signal (Note 2)
80	±7.44	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
90	±7.46	CW
	±25	20 MHz DFT-s-OFDM NR signal (Note 2)
100	±7.48	CW
	±25	20MHz DFT-s-OFDM NR signal (Note 2)
NOTE 1: For the 15 kHz subcarrier spacing, the number of RB is 25. For the 30 kHz subcarrier spacing, the number of RB is 10. NOTE 2: For the 15 kHz subcarrier spacing, the number of RB is 100. For the 30 kHz subcarrier spacing, the number of RB is 50. For the 60 kHz subcarrier spacing, the number of RB is 24. NOTE 3: The RBs shall be placed adjacent to the transmission bandwidth configuration edge which is closer to the IAB-DU RF Bandwidth edge.

Table 7.8.5.1-3: Narrowband intermodulation performance requirement in FR1

IAB-DU class	Wanted signal mean power (dBm)	Interfering signal mean power (dBm)	Type of interfering signal
Wide Area	EIS_REFSENS + 6 dB (Note 1)	-52 – Δ_OTAREFSENS	See table 7.8.5.1-4
	EIS_minSENS + 6 dB (Note 1)	-52 – Δ_minSENS
Medium Range	EIS_REFSENS + 6 dB (Note 1)	-47 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB (Note 1)	-47 – Δ_minSENS
Local Area	EIS_REFSENS + 6 dB (Note 1)	-44 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB (Note 1)	-44 – Δ_minSENS
NOTE: EIS_REFSENS and EIS_minSENS depends on the IAB channel bandwidth as specified in TS 38.174 [2], clause 10.2.1.1 and 10.3.2.1.

Table 7.8.5.1-4: Interfering signals for narrowband intermodulation requirement in FR1

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering RB centre frequency offset from the lower/upper IAB-DU RF Bandwidth edge or sub-block edge inside a sub-block gap (kHz) (Note 3)	Type of interfering signal
10	±370	CW
	±1960	5MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
15 (NOTE 2)	±380	CW
	±1960	5MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
20 (NOTE 2)	±390	CW
	±2320	5MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
25 (NOTE 2)	±325	CW
	±2350	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
30 (NOTE 2)	±335	CW
	±2350	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
40 (NOTE 2)	±355	CW
	±2710	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
50 (NOTE 2)	±375	CW
	±2710	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
60 (NOTE 2)	±395	CW
	±2710	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
70 (NOTE 2)	±415	CW
	±2710	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
80 (NOTE 2)	±435	CW
	±2710	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
90 (NOTE 2)	±365	CW
	±2530	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
100 (NOTE 2)	±385	CW
	±2530	20MHz DFT-s-OFDM NR signal, 1 RB (NOTE 1)
NOTE 1: Interfering signal consisting of one resource block positioned at the stated offset, the IAB-DU channel bandwidth of the interfering signal is located adjacently to the lower/upper IAB-DU RF Bandwidth edge. NOTE 2: This requirement shall apply only for a G-FRC mapped to the frequency range at the channel edge adjacent to the interfering signals. NOTE 3: The centre of the interfering RB refers to the frequency location between the two central subcarriers.

7.8.5.2 IAB-DU type 2-O

Throughputshall be ≥ 95% of the maximum throughput of the reference measurement channel, with OTA wanted signal at the assigned channel frequency and two OTA interfering signals provided at the RIB using the parameters in tables 7.8.5.2-1 and 7.8.5.2-2. All of the OTA test signals arrive from the same direction, and the requirement is valid if the signals arrive from any direction within the FR2 OTA REFSENS RoAoA. The reference measurement channel for the wanted signal is identified in table 7.3.5.3-1 for each IAB-DU channel bandwidth and further specified in annex A.1.

The subcarrier spacing for the modulated interfering signal shall be the same as the subcarrier spacing for the wanted signal.

The receiver intermodulation requirement is applicable outside the IAB-DU RF Bandwidth. The interfering signal offset is defined relative to the IAB-DU RF Bandwidth edges.

Table 7.8.5.2-1: General intermodulation requirement

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Mean power of interfering signals (dBm)	Wanted signal mean power (dBm)	Type of interfering signal
50, 100, 200, 400	EIS_{REFSENS_50M} + 25 + Δ_{FR2_REFSENS} dB	EIS_REFSENS + 6dB	See table 7.8.5.2-2
NOTE: EIS_REFSENS and EIS_{REFSENS_50M} are given in TS 38.174 [2], clause 10.3.2.2.

Table 7.8.5.2-2: Interfering signals for intermodulation requirement

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the IAB-DU RF Bandwidth edge (MHz)	Type of interfering signal
50 MHz	±7.5	CW
	±40	50MHz DFT-s-OFDM NR signal (Note)
100 MHz	±6.88	CW
	±40	50MHz DFT-s-OFDM NR signal (Note)
200 MHz	±5.64	CW
	±40	50MHz DFT-s-OFDM NR signal (Note)
400 MHz	±6.02	CW
	±45	50MHz DFT-s-OFDM NR signal (Note)
NOTE: For the 60 kHz subcarrier spacing, the number of RB is 64. For the 120 kHz subcarrier spacing, the number of RB is 32.

7.8.5.3 IAB-MT type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction, and:

– when the wanted signal is based on EIS_REFSENS: the AoA of the incident wave of a received signal and the interfering signal are within the FR1 OTA REFSENS RoAoA.

– when the wanted signal is based on EIS_minSENS: the AoA of the incident wave of a received signal and the interfering signal are within the minSENS RoAoA.

The throughputshall be ≥ 95% of the maximum throughput of the reference measurement channel, with a wanted signal at the assigned channel frequency and two interfering signals at the RIB with the conditions specified in tables 7.8.5.3-1 and 7.8.5.3-2 for intermodulation performance and in tables 7.8.5.3-3 and 7.8.5.3-4 for narrowband intermodulation performance.

The reference measurement channel for the wanted signal is identified in table 7.3.5.2-1, table 7.3.5.2-2 and table 7.3.5.2-3 for each IAB-MT channel bandwidth and further specified in annex A.1.

The subcarrier spacing for the modulated interfering signal shall be the same as the subcarrier spacing for the wanted signal, except for the case of wanted signal subcarrier spacing 60 kHz and IAB-MT channel bandwidth ≤ 20 MHz, for which the subcarrier spacing of the interfering signal should be 30 kHz.

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

For a RIBs supporting operation in non-contiguous spectrum within any operating band, the narrowband intermodulation requirement shall apply in addition inside any sub-block gap in case the sub-block gap is at least as wide as the IAB-MT channel bandwidth of the NR interfering signal in tables 7.8.5.3-1 and 7.8.5.3-2. The interfering signal offset is defined relative to the sub-block edges inside the sub-block gap.

For multi-band RIBs, the narrowband intermodulation requirement shall apply in addition inside any Inter RF Bandwidth gap in case the gap size is at least as wide as the NR interfering signal in tables 7.8.5.3-3 and 7.8.5.3-4. The interfering signal offset is defined relative to the IAB-MT RF Bandwidth edges inside the Inter RF Bandwidth gap.

Table 7.8.5.3-1: General intermodulation requirement

IAB-MT class	Wanted Signal mean power (dBm)	Mean power of interfering signals (dBm)	Type of interfering signal
Wide Area	EIS_REFSENS + 6 dB	-52 – Δ_OTAREFSENS	See table 7.8.5.3-2
	EIS_minSENS + 6 dB	-52 – Δ_minSENS
Local Area	EIS_REFSENS + 6 dB	-44 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB	-44 – Δ_minSENS
NOTE: EIS_REFSENS and EIS_minSENS depend on the IAB-MT class and on the IAB-MT channel bandwidth as specified in TS 38.174 [2], clause 10.2.2.1.2 and 10.3.3.2.

Table 7.8.5.3-2: Interfering signals for intermodulation requirement

IAB-DU channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper IAB-DU RF Bandwidth edge (MHz)	Type of interfering signal (Note 3)
10	±7.465	CW
	±17.5	5MHz CP-OFDM NR signal (Note 1)
15	±7.43	CW
	±17.5	5MHz CP-OFDM NR signal (Note 1)
20	±7.395	CW
	±17.5	5MHz CP-OFDM NR signal (Note 1)
25	±7.465	CW
	±25	20 MHz CP-OFDM NR signal (Note 2)
30	±7.43	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
40	±7.45	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
50	±7.35	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
60	±7.49	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
70	±7.42	CW
	±25	20 MHz CP-OFDM NR signal (Note 2)
80	±7.44	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
90	±7.46	CW
	±25	20 MHz CP-OFDM NR signal (Note 2)
100	±7.48	CW
	±25	20MHz CP-OFDM NR signal (Note 2)
NOTE 1: For the 15 kHz subcarrier spacing, the number of RB is 25. For the 30 kHz subcarrier spacing, the number of RB is 10. NOTE 2: For the 15 kHz subcarrier spacing, the number of RB is 100. For the 30 kHz subcarrier spacing, the number of RB is 50. For the 60 kHz subcarrier spacing, the number of RB is 24. NOTE 3: The RBs shall be placed adjacent to the transmission bandwidth configuration edge which is closer to the IAB-MT RF Bandwidth edge.

Table 7.8.5.3-3: Narrowband intermodulation performance requirement in FR1

IAB-MT class	Wanted signal mean power (dBm)	Interfering signal mean power (dBm)	Type of interfering signal
Wide Area	EIS_REFSENS + 6 dB (Note 1)	-52 – Δ_OTAREFSENS	See table 7.8.5.3-4
	EIS_minSENS + 6 dB (Note 1)	-52 – Δ_minSENS
Local Area	EIS_REFSENS + 6 dB (Note 1)	-44 – Δ_OTAREFSENS
	EIS_minSENS + 6 dB (Note 1)	-44 – Δ_minSENS
NOTE: EIS_REFSENS and EIS_minSENS depends on the IAB-MT channel bandwidth as specified in TS 38.174 [2], clause 10.2.2.1.2 and 10.3.3.2.

Table 7.8.5.3-4: Interfering signals for narrowband intermodulation requirement in FR1

IAB-MT channel bandwidth of the lowest/highest carrier received (MHz)	Interfering RB centre frequency offset from the lower/upper IAB-MT RF Bandwidth edge or sub-block edge inside a sub-block gap (kHz) (Note 3)	Type of interfering signal
10	±370	CW
	±1960	5MHz CP-OFDM NR signal, 1 RB (Note 1)
15 (NOTE 2)	±380	CW
	±1960	5MHz CP-OFDM NR signal, 1 RB (Note 1)
20 (NOTE 2)	±390	CW
	±2320	5MHz CP-OFDM NR signal, 1 RB (Note 1)
25 (NOTE 2)	±325	CW
	±2350	20MHz CP-OFDM NR signal, 1 RB (Note 1)
30 (NOTE 2)	±335	CW
	±2350	20MHz CP-OFDM NR signal, 1 RB (Note 1)
40 (NOTE 2)	±355	CW
	±2710	20MHz CP-OFDM NR signal, 1 RB (Note 1)
50 (NOTE 2)	±375	CW
	±2710	20MHz CP-OFDM NR signal, 1 RB (Note 1)
60 (NOTE 2)	±395	CW
	±2710	20MHz CP-OFDM NR signal, 1 RB (Note 1)
70 (NOTE 2)	±415	CW
	±2710	20MHz CP-OFDM NR signal, 1 RB (Note 1)
80 (NOTE 2)	±435	CW
	±2710	20MHz CP-OFDM NR signal, 1 RB (Note 1)
90 (NOTE 2)	±365	CW
	±2530	20MHz CP-OFDM NR signal, 1 RB (Note 1)
100 (NOTE 2)	±385	CW
	±2530	20MHz CP-OFDM NR signal, 1 RB (Note 1)
NOTE 1: Interfering signal consisting of one resource block positioned at the stated offset, the IAB-MTchannel bandwidth of the interfering signal is located adjacently to the lower/upper IAB-MT RF Bandwidth edge. NOTE 2: This requirement shall apply only for a G-FRC mapped to the frequency range at the channel edge adjacent to the interfering signals. NOTE 3: The centre of the interfering RB refers to the frequency location between the two central subcarriers.

7.9 OTA in-channel selectivity

7.9.1 Definition and applicability

In-channel selectivity (ICS) is a measure of the receiver ability to receive a wanted signal at its assigned resource block locations in the presence of an interfering signal received at a larger power spectral density. In this condition a throughput requirement shall be met for a specified reference measurement channel. The interfering signal shall be an NR signal as specified in annex E in TS 38.176-1 [3] and shall be time aligned with the wanted signal.

7.9.2 Minimum requirement

The minimum requirement for IAB-DU type 1-O is in TS 38.174 [2], clause 10.9.2.

The minimum requirement for IAB-DU type 2-O is in TS 38.174 [2], clause 10.9.3.

7.9.3 Test purpose

The purpose of this test is to verify the IAB receiver ability to suppress the IQ leakage.

7.9.4 Method of test

7.9.4.1 Initial conditions

Test environment: Normal, see annex B.2.

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

Directions to be tested:

– For IAB type 1-O, receiver target reference direction (D.31),

– For IAB type 2-O, OTA REFSENS receiver target reference direction (D.54).

7.9.4.2 Procedure

1) Place the IAB-DU with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.2.7.

2) Align the manufacturer declared coordinate system orientation of the IAB node with the test system.

3) Align the IAB-DU with the test antenna in the declared direction to be tested.

4) Align the IAB-DU to that the wanted signal and interferer signal is polarization matched with the test antenna(s).

5) Configure the beam peak direction for the transmitter according to the declared reference beam direction pair for the appropriate beam identifier.

6) Set the test signal mean power so the calibrated radiated power at the IAB Antenna Array coordinate system reference point is as specified as follows:

a) Adjust the signal generator for the wanted signal as specified in subclause 7.9.5.1 for IAB-DU type 1-O and subclause 7.9.5.2 for IAB-DU type 2-O;

b) Adjust the signal generator for the interfering signal as specified in subclause 7.9.5.1 for IAB-DU type 1-O and subclause 7.9.5.2 for IAB-DU type 2-O;

7) Measure throughput according to annex A.1 for each supported polarization.

8) Repeat the measurement with the wanted signal on the other side of the F_C, and the interfering signal at opposite side of the F_C and adjacent to the wanted signal.

9) Repeat for all the specified measurement directions and supported polarizations.

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

7.9.5 Test requirement

7.9.5.1 IAB-DU type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of the received signal and the interfering signal are the same direction and are within the minSENS RoAoA

The wanted and interfering signals applies to each supported polarization, under the assumption of polarization match.

For a wanted and an interfering signal coupled to the RIB, the following requirements shall be met:

– For IAB-DU 1-O, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in table 7.9.5.1-1 for Wide Area IAB-DU, in table 7.9.5.1-2 for Medium Range IAB-DU and in table 7.9.5.1-3 for Local Area IAB-DU.

Table 7.9.5.1-1: Wide Area IAB-DU in-channel selectivity

NR channel bandwidth	Subcarrier spacing	Reference measurement	Wanted signal mean power (dBm)			Interfering signal mean	Type of interfering
(MHz)	(kHz)	channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz	power (dBm)	signal
10, 15, 20, 25, 30	15	G-FR1-A1-1	-97-Δ_minSENS	-96.6-Δ_minSENS	-96.3-Δ_minSENS	-77.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
40, 50	15	G-FR1-A1-4	-90.6-Δ_minSENS	-90.2-Δ_minSENS	-89.9-Δ_minSENS	-71.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 100 RBs
10, 15, 20, 25, 30	30	G-FR1-A1-2	-97.1-Δ_minSENS	-96.7-Δ_minSENS	-96.4-Δ_minSENS	-78.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 10 RBs
40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-90.9-Δ_minSENS	-90.5-Δ_minSENS	-90.2-Δ_minSENS	-71.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 50 RBs
10, 15, 20, 25, 30	60	G-FR1-A1-9	-96.5-Δ_minSENS	-96.1-Δ_minSENS	-95.8-Δ_minSENS	-78.4 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 5 RBs
40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-91-Δ_minSENS	-90.6-Δ_minSENS	-90.3-Δ_minSENS	-71.6 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 24 RBs
NOTE: Wanted and interfering signal are placed adjacently around F_c, where the F_c is defined for IAB-DU channel bandwidth of the wanted signal according to the table 5.4.2.2-1 in TS 38.104 [4]. The aggregated wanted and interferer signal shall be centred in the IAB-DU channel bandwidth of the wanted signal.

Table 7.9.5.1-2: Medium Range IAB-DU in-channel selectivity

NR channel bandwidth	Subcarrier spacing	Reference measurement	Wanted signal mean power (dBm)			Interfering signal mean	Type of interfering
(MHz)	(kHz)	channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz	power (dBm)	signal
10, 15, 20, 25, 30	15	G-FR1-A1-1	-92-Δ_minSENS	-91.6-Δ_minSENS	-91.3-Δ_minSENS	-72.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
40, 50	15	G-FR1-A1-4	-85.6-Δ_minSENS	-85.2-Δ_minSENS	-84.9-Δ_minSENS	-66.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 100 RBs
10, 15, 20, 25, 30	30	G-FR1-A1-2	-92.1-Δ_minSENS	-91.7-Δ_minSENS	-91.4-Δ_minSENS	-73.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 10 RBs
40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-85.9-Δ_minSENS	-85.5-Δ_minSENS	-85.2-Δ_minSENS	-66.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 50 RBs
10, 15, 20, 25, 30	60	G-FR1-A1-9	-91.5-Δ_minSENS	-91.1-Δ_minSENS	-90.8-Δ_minSENS	-73.4 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 5 RBs
40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-86-Δ_minSENS	-85.6-Δ_minSENS	-85.3-Δ_minSENS	-66.6 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 24 RBs
NOTE: Wanted and interfering signal are placed adjacently around F_c, where the F_c is defined for IAB-DU channel bandwidth of the wanted signal according to the table 5.4.2.2-1 in TS 38.104 [4]. The aggregated wanted and interferer signal shall be centred in the IAB-DU channel bandwidth of the wanted signal.

Table 7.9.5.1-3: Local area IAB-DU in-channel selectivity

NR channel bandwidth	Subcarrier spacing	Reference measurement	Wanted signal mean power (dBm)			Interfering signal mean	Type of interfering
(MHz)	(kHz)	channel (annex A.1)	f ≤ 3.0 GHz	3.0 GHz < f ≤ 4.2 GHz	4.2 GHz < f ≤ 6.0 GHz	power (dBm)	signal
10, 15, 20, 25, 30	15	G-FR1-A1-1	-89-Δ_minSENS	-88.6-Δ_minSENS	-88.3-Δ_minSENS	-69.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
40, 50	15	G-FR1-A1-4	-82.6-Δ_minSENS	-82.2-Δ_minSENS	-81.9-Δ_minSENS	-63.4 – Δ_minSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 100 RBs
10, 15, 20, 25, 30	30	G-FR1-A1-2	-89.1-Δ_minSENS	-88.7-Δ_minSENS	-88.4-Δ_minSENS	-70.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 10 RBs
40, 50, 60, 70, 80, 90, 100	30	G-FR1-A1-5	-82.9-Δ_minSENS	-82.5-Δ_minSENS	-82.2-Δ_minSENS	-63.4 – Δ_minSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 50 RBs
10, 15, 20, 25, 30	60	G-FR1-A1-9	-88.5-Δ_minSENS	-88.1-Δ_minSENS	-87.8-Δ_minSENS	-70.4 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 5 RBs
40, 50, 60, 70, 80, 90, 100	60	G-FR1-A1-6	-83-Δ_minSENS	-82.6-Δ_minSENS	-82.3-Δ_minSENS	-63.6 – Δ_minSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 24 RBs
NOTE: Wanted and interfering signal are placed adjacently around F_c, where the F_c is defined for IAB-DU channel bandwidth of the wanted signal according to the table 5.4.2.2-1 in TS 38.104 [4]. The aggregated wanted and interferer signal shall be centred in the IAB-DU channel bandwidth of the wanted signal.

7.9.5.2 IAB-DU type 2-O

For IAB-DU type 2-O, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in table 7.9.5.2-1.

The wanted and interfering signals applies to each supported polarization, under the assumption of polarization match.

Table 7.9.5.2-1: OTA in-channel selectivity requirement for IAB-DU type 2-O

NR channel bandwidth (MHz)	Subcarrier spacing (kHz)	Reference measurement channel (annex A.1)	Wanted signal mean power (dBm) (Note 2)	Interfering signal mean power (dBm) (Note 2)	Type of interfering signal
50	60	G-FR2-A1-4	EIS_{REFSENS_50M} + 3.4 + Δ_{FR2_REFSENS}	EIS_{REFSENS_50M}+ 10 + Δ_{FR2_REFSENS}	DFT-s-OFDM NR signal, 60 kHz SCS, 32 RBs
100, 200	60	G-FR2-A1-1	EIS_{REFSENS_50M}+ 6.4 + Δ_{FR2_REFSENS}	EIS_{REFSENS_50M}+ 13 + Δ_{FR2_REFSENS}	DFT-s-OFDM NR signal, 60 kHz SCS, 64 RBs
50	120	G-FR2-A1-5	EIS_{REFSENS_50M} + 3.4 + Δ_{FR2_REFSENS}	EIS_{REFSENS_50M}+ 10 + Δ_{FR2_REFSENS}	DFT-s-OFDM NR signal, 120 kHz SCS, 16 RBs
100, 200, 400	120	G-FR2-A1-2	EIS_{REFSENS_50M}+ 6.4 + Δ_{FR2_REFSENS}	EIS_{REFSENS_50M}+ 13 + Δ_{FR2_REFSENS}	DFT-s-OFDM NR signal, 120 kHz SCS, 32 RBs
NOTE 1: Wanted and interfering signal are placed adjacently around F_c, where the F_c is defined for IAB-DU channel bandwidth of the wanted signal according to the table 5.4.2.2-1 in TS 38.104 [4]. The aggregated wanted and interferer signal shall be centred in the IAB-DU channel bandwidth of the wanted signal. NOTE 2: EIS_{REFSENS_50M} is defined in TS 38.174 [2], clause 10.2.1.2.