6.2.3F Maximum Power Reduction (MPR) 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
6.2.3F.1 Test purpose
To verify that the error of the UE maximum output power does not exceed the range prescribed by the specified nominal maximum output power and tolerance covering configurations where a maximum power reduction is allowed in the UE.
An excess maximum output power has the possibility to interfere to other channels or other systems. A small maximum output power decreases the coverage area.
6.2.3F.2 Test applicability
The requirements of this test apply in test case 6.6.2.3F Adjacent Channel Leakage power Ratio for category NB1 and NB2 to all types of NB-IoT FDD UE release 13 and forward of category NB1.
The requirements of this test apply in test case 6.6.2.3F Adjacent Channel Leakage power Ratio for category NB1 and NB2 to all types of NB-IoT FDD UE release 14 and forward of category NB2.
The requirements of this test apply in test case 6.6.2.3F Adjacent Channel Leakage power Ratio for category NB1 and NB2 to all types of NB-IoT TDD UE release 15 and forward of category NB1 and NB2.
NOTE: As a result TC 6.2.3F has not been included in the test case applicability table 4.1-1, TS 36.521-2. This does not preclude the test from being used for R&D or other purposes if deemed useful.
6.2.3F.3 Minimum conformance requirements
For UE category NB1 power class 3 and 5 the allowed Maximum Power Reduction (MPR) for the maximum output power given in Table 6.2.2F.3-1 is specified in Table 6.2.3F.3-1.
Table 6.2.3F.3-1: Maximum Power Reduction (MPR) for UE category NB1 and NB2 Power Class 3 and 5
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Modulation |
QPSK |
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Tone positions for 3 Tones allocation |
0-2 |
3-5 and 6-8 |
9-11 |
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|
MPR |
≤ 0.5 dB |
0 dB |
≤ 0.5 dB |
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Tone positions for 6 Tones allocation |
0-5 and 6-11 |
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MPR |
≤ 1 dB |
≤ 1 dB |
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Tone positions for 12 Tones allocation |
0-11 |
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MPR |
≤ 2 dB |
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For the UE maximum output power modified by MPR, the power limits specified in sub-clause 6.2.5F.3 apply.
The normative reference for this requirement is TS 36.101 clause 6.2.3F.
6.2.3F.4 Test description
6.2.3F.4.1 Initial condition
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 6.2.3F.4.1-1. The details of the uplink reference measurement channels (RMCs) are specified in Annex A.2.4. Configurations of NPDSCH and NPDCCH before measurement are specified in Annex C.2.
Table 6.2.3F.4.1-1: Test Configuration Table for FDD & TDD
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Initial Conditions |
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Test Environment as specified in TS 36.508 [7] subclause 8.1.1 |
Normal, TL/VL, TL/VH, TH/VL, TH/VH |
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Test Frequencies as specified in TS 36.508 [7] subclause 8.1.3.1 |
Frequency ranges defined in Annex K.1.2 |
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Test Parameters |
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Configuration ID |
Downlink Configuration |
Uplink Configuration |
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N/A for Maximum Power Reduction (MPR) test case |
Modulation |
Ntones |
Sub-carrier spacing (kHz) |
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1 |
QPSK |
1@0 |
3.75 |
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2 |
QPSK |
1@47 |
3.75 |
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3 |
BPSK |
1@0 |
15 |
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4 |
BPSK |
1@11 |
15 |
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|
5 (Note 1) |
QPSK |
3@0 |
15 |
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6 (Note 1) |
QPSK |
3@3 |
15 |
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7 (Note 1) |
QPSK |
3@9 |
15 |
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8 (Note 1) |
QPSK |
6@0 |
15 |
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9 (Note 1) |
QPSK |
6@6 |
15 |
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10 (Note 1) |
QPSK |
12@0 |
15 |
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Note 1: Applicable to UE supporting UL multi-tone transmissions |
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1. Connect the SS to the UE antenna connectors as shown in TS 36.508 [7] Annex A Figure A.3 using only 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.3.0, and uplink signals according to Annex H.1 and H.3.0.
4. The UL Reference Measurement channels are set according to Table 6.2.3F.4.1-1.
5. 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 6.2.3F.4.3.
6.2.3F.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 6.2.3F.4.1-1 and with scheduling pattern and repetitions according to Annex A.2. Since the UE has no payload and no loopback data to send the UE sends uplink MAC padding bits on the UL RMC.
2. Measure the mean power of the UE in the channel bandwidth of the radio access mode. The period of measurement shall be at least the continuous duration one sub-frame (1ms) for 15 kHz sub-carrier spacing, or for 3.75 kHz sub-carrier spacing at least one slot (2 ms) excluding the 2304Ts gap when UE is not transmitting. For TDD slots with transient periods are not under test.
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.
6.2.3F.4.3 Message contents
Message contents are according to TS 36.508 [7] subclause 8.1.6.
6.2.3F.5 Test requirements
The maximum output power, derived in step 2 shall be within the range prescribed by the nominal maximum output power and tolerance in Table 6.2.3F.5-1.
Table 6.2.3F.5-1: Maximum Power Reduction test requirements Power Class 3 and 5
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Test ID |
MPR (dB) |
Power class 3 |
Power class 5 |
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|
PCMAX,c (dBm) |
T(PCMAX_L,c) (dB) |
Upper limit (dBm) |
Lower limit (dBm) |
PCMAX,c (dBm) |
T(PCMAX_L,c) (dB) |
Upper limit (dBm) |
Lower limit (dBm) |
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|
1 |
0 |
23 |
2.0 |
25.7 |
20.3 |
20 |
2.0 |
22.7 |
17.3 |
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2 |
0 |
23 |
2.0 |
25.7 |
20.3 |
20 |
2.0 |
22.7 |
17.3 |
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3 |
0 |
23 |
2.0 |
25.7 |
20.3 |
20 |
2.0 |
22.7 |
17.3 |
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4 |
0 |
23 |
2.0 |
25.7 |
20.3 |
20 |
2.0 |
22.7 |
17.3 |
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5 |
0.5 |
22.5 |
2.0 |
25.7 |
19.8 |
19.5 |
2.0 |
22.7 |
16.8 |
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6 |
0 |
23 |
2.0 |
25.7 |
20.3 |
20 |
2.0 |
22.7 |
17.3 |
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7 |
0.5 |
22.5 |
2.0 |
25.7 |
19.8 |
19.5 |
2.0 |
22.7 |
16.8 |
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8 |
1 |
22 |
2.0 |
25.7 |
19.3 |
19 |
2.0 |
22.7 |
16.3 |
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9 |
1 |
22 |
2.0 |
25.7 |
19.3 |
19 |
2.0 |
22.7 |
16.3 |
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|
10 |
2 |
21 |
2.0 |
25.7 |
18.3 |
18 |
2.0 |
22.7 |
15.3 |
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Note 1: PCMAX,c and T(PCMAX_L,c) are defined in TS 36.101 [2] clause 6.2.5F |
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