7.6.2F Out-of-band blocking for category NB1 and NB2

36.521-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Part 1: Conformance testingRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

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

7.6.2F.1 Test Purpose

Out-of-band band blocking is defined for an unwanted CW interfering signal falling more than 15 MHz below or above the UE receive band, at which a given average throughput shall meet or exceed the requirement for the specified measurement channels.

For the first 15 MHz below or above the UE receive band the appropriate in-band blocking or adjacent channel selectivity in sub-clause 7.5F.1 and sub-clause 7.6.1F.1 shall be applied.

The lack of out-of-band blocking ability will decrease the coverage area when other e-NodeB transmitters exist (except in the adjacent channels and spurious response).

7.6.2F.2 Test Applicability

This test case applies to all types of NB-IoT FDD UE release 13 and forward of category NB1.

This test case applies to all types of NB-IoT FDD UE release 14 and forward of category NB2.

This test case applies to all types of NB-IoT TDD UE release 15 and forward of category NB1 and NB2.

7.6.2F.3 Minimum Conformance Requirements

The category NB1 and NB2 UE throughput shall be ≥ 95% of the maximum throughput of the reference measurement channels as specified in Annexes A.3.2 with parameters specified in Table 7.6.2F.3-1.

For Table 7.6.2F.3-1 in frequency range 1, 2 and 3, up to 24 exceptions are allowed for spurious response frequencies in each assigned frequency channel when measured using a 1MHz step size. For these exceptions the requirements of subclause 7.7F spurious response are applicable.

Table 7.6.2F.3-1: Out-of-band blocking parameters for category NB1 and NB2 UE

Parameter	Units	Frequency
Parameter	Units	Range 1	Range 2	Range 3
P_wanted	dBm	REFSENS + 6 dB
P_interferer (CW)	dBm	-44	-30	-15
F_interferer range	MHz	F_{DL_low}– 15 to F_{DL_low} – 60	F_{DL_low}– 60 to F_{DL_low} – 85	F_{DL_low}– 85 to 1 MHz
F_interferer range	MHz	F_{DL_high}+ 15 to F_{DL_high} + 60	F_{DL_high +} 60 to F_{DL_high} + 85	F_{DL_high +} 85 to 12750 MHz
NOTE 1: For operating bands which downlink band frequency range is between 617 MHz < 1 GHz the power level of the interferer (P_Interferer) for Range 3 shall be modified to: -18 dBm for the frequency range which is bounded by F_{DL_low}– 150 MHz of the lowest band that UE supports in frequency range 617 MHz < 1 GHz and F_{DL_high}+ 150 MHz of the highest band that UE supports in frequency range 617 MHz < 1 GHz. NOTE 2: For operating bands which downlink band frequency range is between 1805 MHz < f < 2690 MHz the power level of the interferer (P_Interferer) for Range 3 shall be modified to: [-20] dBm for the frequency range which is bounded by F_{DL_low} – [200] MHz of the lowest band that UE supports in frequency range 1805 MHz < f < 2690 MHz and F_{DL_high} + [200] MHz of the highest band that UE supports in frequency range 1805 MHz < f < 2690 MHz.

The normative reference for this requirement is TS 36.101 [2] clause 7.6.2.1F.

7.6.2F.4 Test Description

7.6.2F.4.1 Initial Conditions

Initial conditions are a set of test configurations the UE needs to be tested in and the steps for the SS to take with the UE to reach the correct measurement state.

The initial test configurations consist of environmental conditions and test frequencies based on the subset of E-UTRA operating bands defined for NB-IoT in clause 5.2F. All of these configurations shall be tested with applicable test parameters, and are shown in table 7.6.2F.4.1-1. The details of the downlink reference measurement channels (RMCs) are specified in Annex A.3. Configurations of NPDSCH and NPDCCH before measurement are specified in Annex C.2.

Table 7.6.2F.4.1-1: Test Configuration Table for FDD & TDD

Initial Conditions
Test Environment as specified in TS 36.508 [7] clause 8.1.1			NC
Test Frequencies as specified in TS36.508 [7] clause 8.1.3.1			Frequency ranges defined in Annex K.1.1 (Note)
Configuration ID	Downlink Configuration		Uplink Configuration
	Modulation	Subcarriers	Modulation	N_tones	Subcarrier spacing
1	QPSK	12	BPSK	1@0	15 kHz
Note: If UE only supports one operating band below 1GHz, one test frequency chosen arbitrarily from low or high range of supported band is tested; If UE only supports one operating band above 1GHz, one test frequency chosen arbitrarily from low or high range of supported band is tested.

1. Connect the SS to the UE antenna connector as shown in TS 36.508 [7] Annex A, Figure A.5 using only the main UE Tx/Rx antenna.

2. The parameter settings for the cell are set up according to TS 36.508 [7] subclause 8.1.4.3.

3. Downlink signals are initially set up according to Annex C.0, C.1 and C.2, and NPUSCH Format 2 is used to carry ACK/NACK on the uplink.

4. The DL Reference Measurement channel is set according to Table 7.6.2F.4.1-1.

5. Propagation conditions are set according to Annex B.0.

6. Ensure the UE is in State 2A-NB with CP CIoT Optimisation according to TS 36.508 [7] clause 8.1.5. Message contents are defined in clause 7.6.2F.4.3.

7.6.2F.4.2 Test Procedure

1. SS transmits NPDSCH via NPDCCH DCI format N1 for C_RNTI to transmit the DL RMC according to Table 7.6.2F.4.1-1. The SS sends downlink MAC padding bits on the DL RMC. The UE will send HARQ feedback based on information contained in DCI format N1.

2. Set the downlink signal level according to the table 7.6.2F.5-1.

3. Set the parameters of the CW signal generator for an interfering signal below the wanted signal according to Table 7.6.2F.5-1. The frequency step size is 1MHz.

4. Measure the average throughput for a duration sufficient to achieve statistical significance according to Annex G.2.

5. Record the frequencies for which the throughput doesn’t meet the requirements.

6. Repeat steps from 3 to 5, using an interfering signal above the wanted signal at step 3.

7.6.2F.4.3 Message Contents

Message contents are according to TS 36.508 [7] clause 8.1.6.

7.6.2F.5 Test Requirement

Except for the spurious response frequencies recorded at the final step of test procedure, the throughput measurement derived in test procedure shall be ≥ 95% of the maximum throughput of the reference measurement channels as specified in clause A.3.2 with parameters specified in Tables 7.6.2F.5-1.

For Table 7.6.2F.5-1 in frequency range 1, 2 and 3, up to 24 exceptions are allowed for spurious response frequencies in each assigned frequency channel when measured using a 1MHz step size. For these exceptions the requirements of subclause 7.7F spurious response are applicable.

Table 7.6.2F.5-1: Out-of-band blocking parameters for category NB1 and NB2 UE

Parameter	Units	Frequency
Parameter	Units	Range 1	Range 2	Range 3
P_wanted	dBm	REFSENS + 6 dB
P_interferer (CW)	dBm	-44	-30	-15
F_interferer range	MHz	F_{DL_low}– 15 to F_{DL_low} – 60	F_{DL_low}– 60 to F_{DL_low} – 85	F_{DL_low}– 85 to 1 MHz
F_interferer range	MHz	F_{DL_high}+ 15 to F_{DL_high} + 60	F_{DL_high +} 60 to F_{DL_high} + 85	F_{DL_high +} 85 to 12750 MHz
NOTE 1: For operating bands which downlink band frequency range is between 729 MHz < 1 GHz the power level of the interferer (P_Interferer) for Range 3 shall be modified to: [-18] dBm for the frequency range which is bounded by F_{DL_low}– [150] MHz of the lowest band that UE supports in frequency range 729 MHz < 1 GHz and F_{DL_high}+ [150] MHz of the highest band that UE supports in frequency range 729 MHz < 1 GHz. NOTE 2: For operating bands which downlink band frequency range is between 1805 MHz < f < 2690 MHz the power level of the interferer (P_Interferer) for Range 3 shall be modified to: [-20] dBm for the frequency range which is bounded by F_{DL_low} – [200] MHz of the lowest band that UE supports in frequency range 1805 MHz < f < 2690 MHz and F_{DL_high} + [200] MHz of the highest band that UE supports in frequency range 1805 MHz < f < 2690 MHz.