6.3.2 Transmit OFF power
38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
Editor’s note: Following aspects are either missing or not yet determined otherwise:
– Measurement Uncertainties and Test Tolerances are FFS for power class 1, 2 and 4.
– Measurement grid for PC2/4 in Annex M.4 is TBD.
– The testability of this test case is pending further analysis on relaxation of the requirement for other than Band n257.
6.3.2.1 Test purpose
To verify that the UE transmit OFF power is lower than the value specified in the test requirement.
An excess transmit OFF power potentially increases the Rise Over Thermal (RoT) and therefore reduces the cell coverage area for other UEs.
6.3.2.2 Test applicability
This test applies to all types of NR UE release 15 and forward.
NOTE: Currently, this test case can only support Band n257 and PC3.
6.3.2.3 Minimum conformance requirements
The transmit OFF power is defined as the TRP in the channel bandwidth when the transmitter is OFF. The transmitter is considered OFF when the UE is not allowed to transmit on any of its ports.
The transmit OFF power shall not exceed the values specified in Table 6.3.2.3-1 for each operating band supported. The requirement is verified with the test metric of TRP (Link=TX beam peak direction, Meas=TRP grid).
Table 6.3.2.3-1: Transmit OFF power
Operating band |
Channel bandwidth / Transmit OFF power (dBm) / measurement bandwidth |
|||
50 MHz |
100 MHz |
200 MHz |
400 MHz |
|
n257, n258, n259, n260, n261 |
-35 |
-35 |
-35 |
-35 |
47.58 MHz |
95.16 MHz |
190.20 MHz |
380.28 MHz |
The normative reference for this requirement is TS 38.101-2 [3] clause 6.3.2.
6.3.2.4 Test description
6.3.2.4.1 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 6.3.2.4.1-1. 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 6.3.2.4.1-1: Test Configuration Table
Initial Conditions |
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Test Environment as specified in TS 38.508-1 [10] subclause 4.1 |
Normal |
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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 |
|||
Test SCS as specified in Table 5.3.5-1. |
Highest |
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Test Parameters |
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Downlink Configuration |
Uplink Configuration |
|||
Test ID |
Modulation |
RB allocation |
Modulation |
RB allocation |
1 |
– |
– |
– |
– |
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] subclause 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 Channels are set according to Table 6.3.2.4.1-1.
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 6.3.2.4.3.
6.3.2.4.2 Test procedure
1. 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) for the UE Tx beam selection to complete.
2. 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.
3. Measure UE TRP for the assigned NR channel with a rectangular measurement filter with bandwidths according to Table 6.3.2.5-1. Total radiated power is measured according to TRP measurement procedure defined in Annex K. TRP is calculated considering both polarizations, theta and phi.
NOTE: The BEAM_SELECT_WAIT_TIME default value is defined in Annex K.1.1.
6.3.2.4.3 Message contents
Message contents are according to TS 38.508-1 [10] subclause 4.6.
6.3.2.5 Test requirement
The requirement for the transmit OFF power shall not exceed the values specified in Table 6.3.2.5-1.
Table 6.3.2.5-1: Transmit OFF power
Operating band |
Channel bandwidth / Transmit OFF power (dBm) / measurement bandwidth |
|||
50 MHz |
100 MHz |
200 MHz |
400 MHz |
|
n2572 |
-35+21.4 |
-35+24.4 |
-35+27.4 |
-35+30.4 |
47.58 MHz |
95.16 MHz |
190.20 MHz |
380.28 MHz |
|
n258, n261 |
-35+[21.4] |
-35+[24.4] |
-35+[27.4] |
-35+[30.4] |
47.58 MHz |
95.16 MHz |
190.20 MHz |
380.28 MHz |
|
n260 |
-35+[24.1] |
-35+[27.1] |
-35+[30.1] |
-35+[33.1] |
47.58 MHz |
95.16 MHz |
190.20 MHz |
380.28 MHz |
|
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). NOTE 2: Relaxed n257 test requirement is testable for PC3 and PC1. |