6.3.1 Minimum output power
38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
Editor’s Note: The following aspects of the clause are for future consideration:
– Relaxation, Measurement Uncertainties and Test Tolerances are FFS for power class 1, 2 and 4.
6.3.1.1 Test purpose
To verify the UE’s ability to transmit with a broadband output power below the value specified in the test requirement when the power is set to a minimum value.
6.3.1.2 Test applicability
This test case applies to all types of NR UE release 15 and forward.
6.3.1.3 Minimum conformance requirements
The minimum controlled output power of the UE is defined as the EIRP in the channel bandwidth for all transmit bandwidth configurations (resource blocks) when the power is set to a minimum value.
The minimum output power is defined as the mean power in at least one subframe (1ms).
6.3.1.3.1 Minimum output power for power class 1
For power class 1 UE, the minimum output power shall not exceed the values specified in Table 6.3.1.3.1-1 for each operating band supported. The minimum power is verified in beam locked mode with the test metric of EIRP (Link=TX beam peak direction, Meas=Link angle).
Table 6.3.1.3.1-1: Minimum output power for power class 1
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
n257, n258, n260, n261 |
50 |
4 |
47.58 |
|
100 |
4 |
95.16 |
|
|
200 |
4 |
190.20 |
|
|
400 |
4 |
380.28 |
6.3.1.3.2 Minimum output power for power class 2, 3, and 4
The minimum output power shall not exceed the values specified in Table 6.3.1.3.2-1 for each operating band supported. The minimum power is verified in beam locked mode with the test metric of EIRP (Link=TX beam peak direction, Meas=Link angle).
Table 6.3.1.3.2-1: Minimum output power for power class 2, 3, and 4
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
n257, n258, n260, n261 |
50 |
-13 |
47.58 |
|
100 |
-13 |
95.16 |
|
|
200 |
-13 |
190.20 |
|
|
400 |
-13 |
380.28 |
|
|
NOTE 1: n260 is not applied for power class 2. |
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The normative reference for this requirement is TS 38.101-2 [3] clause 6.3.1.
6.3.1.3.3 Minimum output power for power 6
The minimum output power shall not exceed the values specified in Table 6.3.1.3.3-1 for each operating band supported. The minimum power is verified in beam locked mode with the test metric of EIRP (Link=TX beam peak direction, Meas=Link angle).
Table 6.3.1.3.3-1: Minimum output power for power 6
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
n257, n258, n259, n261 |
50 |
-6 |
47.52 |
|
100 |
-6 |
95.04 |
|
|
200 |
-6 |
190.08 |
|
|
400 |
-6 |
380.16 |
6.3.1.4 Test description
6.3.1.4.1 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, test frequencies, test channel bandwidths and sub-carrier spacing based on NR operating bands specified in Table 5.3.5-1. All of these configurations shall be tested with applicable test parameters for each combination of test channel bandwidth and sub-carrier spacing, and are shown in Table 6.3.1.4.1-1. The details of the uplink reference measurement channels (RMCs) are specified in Annexes A.2. Configurations of PDSCH and PDCCH before measurement are specified in Annex C.2.
Table 6.3.1.4.1-1: Test Configuration Table
|
Initial Conditions |
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|
Test Environment as specified in TS 38.508-1 [10] subclause 4.1 |
Normal, TL, TH |
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|
Test Frequencies as specified in TS 38.508-1 [10] subclause 4.3.1 |
Low range, Mid range, High range |
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|
Test Channel Bandwidths as specified in TS 38.508-1 [10] subclause 4.3.1 |
Lowest, Mid, Highest |
||
|
Test SCS as specified in Table 5.3.5-1. |
Highest |
||
|
Test Parameters |
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|
Downlink Configuration |
Uplink Configuration |
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|
Test ID |
– |
Modulation |
RB allocation (NOTE 1) |
|
1 |
DFT-s-OFDM QPSK |
Outer_Full |
|
|
NOTE 1: The specific configuration of each RB allocation is defined in Table 6.1-1 for PC2, PC3 and PC4 or Table 6.1-2 for PC1. |
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1. Connection between SS and UE is shown in TS 38.508-1 [10] Annex A, Figure A.3.3.1.1 for TE diagram and Figure A.3.4.1.1 for UE diagram.
2. The parameter settings for the cell are set up according to TS 38.508-1 [10] clause 4.4.3.
3. Downlink signals are initially set up according to Annex C, and uplink signals according to Annex G.
4. The UL Reference Measurement Channel is set according to Table 6.3.1.4.1-1.
5. Propagation conditions are set according to Annex B.0.
6. Ensure the UE is in State RRC_CONNECTED with generic procedure parameters Connectivity NR, Connected without release On, Test Mode On and Test Loop Function On according to TS 38.508-1 [10] clause 4.5. Message contents are defined in clause 6.3.1.4.3.
6.3.1.4.2 Test procedure
1. SS sends uplink scheduling information for each UL HARQ process via PDCCH DCI format 0_1 for C_RNTI to schedule the UL RMC according to Table 6.3.1.4.1-1. Since the UE has no payload and no loopback data to send the UE sends uplink MAC padding bits on the UL RMC.
2. Set the UE in the Tx beam peak direction found with a 3D EIRP scan as performed in Annex K.1.1. Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
3. Send continuously uplink power control "down" commands in every uplink scheduling information to the UE; allow at least 200ms starting from the first TPC command in this step to ensure that the UE transmits at its minimum output power. If UE is disconnected, repeat the test case. Optionally, send continuously uplink power control “down” commands in every uplink scheduling information to the UE until the UE EIRP measured by the test system is at a level just before the UE was disconnected. Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
4. SS activates the UE Beamlock Function (UBF) by performing the procedure as specified in TS 38.508-1 [10] clause 4.9.2 using condition Tx only.
5. Measure UE EIRP in the Tx beam peak direction in the measurement bandwidth specified in Table 6.3.1.5-1 and Table 6.3.1.5-2 for the specific channel bandwidth under test. EIRP test procedure is defined in Annex K.1.3. The measuring duration is at least one active subframe (1ms). EIRP is calculated considering both polarizations, theta and phi. For TDD, only slots consisting of only UL symbols are under test.
6. SS deactivates the UE Beamlock Function (UBF) by performing the procedure as specified in TS 38.508-1 [10] clause 4.9.3.
NOTE 1: The BEAM_SELECT_WAIT_TIME default value is defined in Annex K.1.1.
6.3.1.4.3 Message contents
Message contents are according to TS 38.508-1 [10] subclause 4.6 with TRANSFORM_PRECODER_ENABLED condition in Table 4.6.3-118 PUSCH-Config.
6.3.1.5 Test requirement
The maximum EIRP, derived in step 5 shall not exceed the values specified in Table 6.3.1.5-1 and Table 6.3.1.5-2.
Table 6.3.1.5-1: Minimum output power for power class 1
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
n257, n258, n260, n261 |
50 |
4+TBD+TT |
47.58 |
|
100 |
4+TBD+TT |
95.16 |
|
|
200 |
4+TBD+TT |
190.20 |
|
|
400 |
4+TBD+TT |
380.28 |
Table 6.3.1.5-2: Minimum output power for power class 3
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Test Tolerance TT (dB) |
Measurement bandwidth (MHz) |
|
n257, n258, n261 |
50 |
-13+TT |
4.21 |
47.58 |
|
100 |
-13+2.4+TT1 |
2.52 |
95.16 |
|
|
200 |
-13+5.4+TT1 |
0.66 |
190.20 |
|
|
400 |
-13+8.4+TT1 |
0 |
380.28 |
|
|
n260 |
50 |
-13+4.5+TT1 |
1.17 |
47.58 |
|
100 |
-13+7.5+TT1 |
0 |
95.16 |
|
|
200 |
-13+10.5+TT1 |
0 |
190.20 |
|
|
400 |
-13+13.5+TT1 |
0 |
380.28 |
|
|
NOTE 1: Core requirement cannot be tested due to testability issue and test requirement includes relaxation to achieve impact from test system noise to measurement result = 1.0 dB (Minimum requirement + relaxation). |
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Table 6.3.1.5-2a: Minimum output power for power class 2 and 4
|
Operating band |
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
n257, n258, n260, n261 |
50 |
-13+TBD+TT |
47.58 |
|
100 |
-13+TBD+TT |
95.16 |
|
|
200 |
-13+TBD+TT |
190.20 |
|
|
400 |
-13+TBD+TT |
380.28 |
|
|
NOTE 1: n260 is not applied for power class 2. |
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Table 6.3.1.5-3: Minimum output power Test tolerance for power class 1, 2, 4
FFS
Table 6.3.1.5-4: Void