6.6.1F Occupied bandwidth 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

6.6.1F.1 Test purpose

To verify that the UE occupied bandwidth for all transmission bandwidth configurations supported by the UE are less than their specific limits.

6.6.1F.2 Test applicability

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

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

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

6.6.1F.3 Minimum conformance requirements

The occupied bandwidth is defined as the bandwidth containing 99 % of the total integrated mean power of the transmitted spectrum on the assigned channel at the transmit antenna connector. Occupied bandwidth shall be less than the channel bandwidth of category NB1 and NB2 that is 200 kHz.

The normative reference for this requirement is TS 36.101[2] clause 6.6.1F.

6.6.1F.4 Test description

6.6.1F.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 shown in table 6.6.1F.4.1-1. The details of the uplink reference measurement channels (RMCs) are specified in Annexes A.2.4. Configurations of NPDSCH and NPDCCH before measurement are specified in Annex C.2.

Table 6.6.1F.4.1-1: Test Configuration Table for FDD & TDD

Initial Conditions
Test Environment as specified in TS 36.508[7] subclause 8.1.1		Normal
Test Frequencies as specified in TS 36.508 [7] subclause 8.1.3.1		Frequency ranges defined in Annex K.1.1
Test Parameters
Configuration ID	Downlink Configuration	Uplink Configuration
	N/A	Modulation	N_tones	Sub-carrier spacing (kHz)
1		QPSK	1@0	3.75kHz
2		QPSK	1@0	15kHz
3 (Note 1)		QPSK	12@0	15kHz
Note 1: Applicable to UE supporting UL multi-tone transmissions

1. Connect the SS to the UE antenna connectors as shown in TS 36.508 [7] Annex A, Figure A.3 using only main 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 C0, C.1 and C.3.0, and uplink signals according to Annex H.1 and H.4.0.

4. The UL Reference Measurement channels are set according to Table 6.6.1F.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 6.6.1F.4.3

6.6.1F.4.2 Test procedure

1. SS sends uplink scheduling information via NPDCCH DCI format N0 for C_RNTI to schedule the UL RMC according to Table 6.6.1F.4.1-1. Since the UE has no payload and no loopback data to send, the UE sends uplink MAC padding bits on the UL RMC. (UE should be already transmitting P_UMAX after Initial Conditions setting).

2. Measure the power spectrum distribution within two times or more range over the requirement for Occupied Bandwidth specification centring on the current carrier frequency. The characteristic of the filter shall be approximately Gaussian (typical spectrum analyzer filter). Other methods to measure the power spectrum distribution are allowed. The measurement duration is at least one sub-frame (1ms) for 15 KHz channel spacing, and at least a 2ms slot (excluding the 2304Ts gap when UE is not transmitting) respectively for the 3.75 KHz channel spacing. For TDD slots with transient periods are not under test.

3. Calculate the total power within the range of all frequencies measured in ‘2)’ and save this value as "Total Power".

4. Sum up the power upward from the lower boundary of the measured frequency range in ‘2)’ and seek the limit frequency point by which this sum becomes 0,5 % of "Total Power" and save this point as "Lower Frequency".

5. Sum up the power downward from the upper boundary of the measured frequency range in ‘2)’ and seek the limit frequency point by which this sum becomes 0,5 % of "Total Power" and save this point as "Upper Frequency".

6. Calculate the difference ("Upper Frequency " "Lower Frequency" = "Occupied Bandwidth") using the limit frequencies obtained in ‘4)’ or ‘5)’.

NOTE 1: For configuration IDs applicable to UE depending on UE capability in Test Configuration Table with different UL sub-carrier spacing, the SS shall release the connection through State 3A-NB and finally ensure the UE is in State 2A-NB with CP CIoT Optimisation according to TS 36.508 [7] clause 8.1.5 using the appropriate UL subcarrier spacing in Random Access Response message.

6.6.1F.4.3 Message contents

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

6.6.1F.5 Test requirement

The measured Occupied Bandwidth shall not exceed 200kHz.