6.3D Output power dynamics for UL MIMO

38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

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

6.3D.0 General

The requirements in subclause 6.3D shall be met with configurations specified in sub-clause 6.2D.1.1.3.x, where ‘x’ depends on power class. Unless otherwise specified, the requirements shall be verified in beam locked mode with the test metric of EIRP (Link=TX beam peak direction, Meas=Link angle).

6.3D.1 Minimum output power for UL MIMO

Editor’s Note: This clause is incomplete. The following aspects are either missing or not yet determined:

– Measurement Uncertainty and Test Tolerances are FFS.

– OTA test procedure for UL MIMO is still under investigation

– TP analysis is FFS.

6.3D.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.

6.3D.1.2 Test applicability

This test case applies to all types of NR UE release 15 and forward supporting UL MIMO.

6.3D.1.3 Minimum conformance requirements

The minimum output power is defined as the mean power in at least one subframe (1ms). The minimum controlled output power is defined as the EIRP, i.e. the sum of the power in the channel bandwidth for all transmit bandwidth configurations (resource blocks), when the UE power is set to a minimum value.

6.3D.1.3.1 Minimum output power for UL MIMO for power class 1

For UE supporting UL MIMO, the minimum output power shall not exceed the sum of the values specified in Table 6.3.1.3.1-1 and the quantity 10*log₁₀(Number of Layers).

6.3D.1.3.2 Minimum output power for UL MIMO for power class 2, 3 and 4

For UE supporting UL MIMO, the minimum output power shall not exceed the values specified in Table 6.3.1.3.2-1 and the quantity 10*log₁₀(Number of Layers).

The normative reference for this requirement is TS 38.101-2 [3] clause 6.3D.1.

6.3D.1.4 Test description

6.3D.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 5.2-1. 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 6.3D.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 6.3D.1.4.1-1: Test Configuration Table

Initial Conditions
Test Environment as specified in TS 38.508-1 [10] subclause 4.1		Normal
Test Frequencies as specified in TS 38.508-1 [10] subclause 4.3.1		Low range, Mid range, High range
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
	Downlink Configuration	Uplink Configuration
Test ID	–	Modulation	RB allocation (NOTE 1)
1		CP-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.

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 6.3D.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 6.3D.1.4.3.

6.3D.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 6.3D.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. The PDCCH DCI format 0_1 is specified with the condition 2TX_UL_MIMO in 38.508-1 [5] subclause 4.3.6.1.1.2.

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 6.3D.1.5-1 and Table 6.3D.1.5-2 for the specific channel bandwidth under test. EIRP test procedure is defined in Annex K. The measuring duration is at least one active uplink subframe. EIRP is calculated considering both polarizations, theta and phi. For TDD slots with transient periods are not 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.

6.3D.1.4.3 Message contents

Message contents are according to TS 38.508-1 [5] subclause 4.6 ensuring Table 4.6.3-182 with condition 2TX_UL_MIMO.

6.3D.1.5 Test requirement

The minimum EIRP, derived in step 5 shall not exceed the values specified in Table 6.3D.1.5-1 and Table 6.3D.1.5-2.

Table 6.3D.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+TT	47.58
	100	4+TT	95.16
	200	4+TT	190.20
	400	4+TT	380.28

Table 6.3D.1.5-2: 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+TT	47.58
	100	-13+TT	95.16
	200	-13+TT	190.20
	400	-13+TT	380.28

6.3D.2 Transmit OFF power for UL MIMO

Editor’s Note: This clause is incomplete. The following aspects are either missing or not yet determined:

Measurement Uncertainty and Test Tolerances are FFS.
The testability of this test case is pending further analysis on relaxation of the requirement.
OTA test procedure for UL-MIMO is still under investigation.
Measurement grid for PC2/4 in Annex M.4 is TBD.

6.3D.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.

6.3D.2.2 Test applicability

This test applies to all types of NR UE release 15 and forward supporting UL MIMO.

6.3D.2.3 Minimum conformance requirements

For UE supporting UL MIMO, 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. During DTX and measurements gaps, the transmitter is not considered OFF. The minimum output power shall not exceed the values specified in Table 6.3.2.3-1. The requirement is verified with the test metric of TRP (Link=TX beam peak direction, Meas=TRP grid).

The normative reference for this requirement is TS 38.101-2 [3] clause 6.3D.2.

6.3D.2.4 Test description

6.3D.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 6.3D.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 6.3D.2.4.1-1: Test Configuration Table

Initial Conditions
Test Environment as specified in TS 38.508-1 [10] subclause 4.1			Normal
Test Frequencies as specified in TS 38.508-1 [10] subclause 4.3.1			Low range, Mid range, High range
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
Test Parameters
	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 6.3D.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 6.3D.2.4.3.

6.3D.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 6.3D.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.

6.3D.2.4.3 Message contents

Message contents are according to TS 38.508-1 [10] subclause 4.6 ensuring Table 4.6.3-182 with condition 2TX_UL_MIMO.

6.3D.2.5 Test requirement

The requirement for the transmit OFF power shall not exceed the values specified in Table 6.3D.2.5-1.

Table 6.3D.2.5-1: Transmit OFF power

Operating band	Channel bandwidth / Transmit OFF power (dBm) / measurement bandwidth
Operating band	50 MHz	100 MHz	200 MHz	400 MHz
n257²	-35+[21.4]	-35+[24.4]	-35+[27.4]	-35+[30.4]
n257²	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]
n258, n261	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]
n260	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.]

6.3D.3 Transmit ON/OFF time mask for UL MIMO

6.3D.3.1 General ON/OFF time mask for UL MIMO

Editor’s Note: This clause is incomplete. The following aspects are either missing or not yet determined:

Measurement Uncertainty and Test Tolerances are FFS.
Test requirement of ON power is FFS.
Testability of OFF power needs further study.
OTA test procedure for UL-MIMO is still under investigation
TP analysis is FFS.

6.3D.3.1.1 Test purpose

To verify that the general ON/OFF time mask meets the requirements given in 6.3D.3.1.5. Transmission of the wrong power increases interference to other channels, or increases transmission errors in the uplink channel.

6.3D.3.1.2 Test applicability

This test case applies to all types of NR UE release 15 and forward supporting UL MIMO.

6.3D.3.1.3 Minimum conformance requirements

For UE supporting UL MIMO, the ON/OFF time mask requirements in subclause 6.3.3 apply.

The normative reference for this requirement is TS 38.101-2 [3] clause 6.3D.3.

6.3D.3.1.4 Test description

6.3D.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 6.3D.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 6.3D.3.1.4.1-1: Test Configuration Table

Initial Conditions
Test Environment as specified in TS 38.508-1 [10] subclause 4.1		Normal, TL, TH
Test Frequencies as specified in TS 38.508-1 [10] subclause 4.3.1		Low range, Mid range, High range
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
	Downlink Configuration	Uplink Configuration
Test ID	–	Modulation	RB allocation (NOTE 1)
1		CP-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.

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 6.3D.3.1.4.1-1.

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

6.3D.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 6.3D.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. The PDCCH DCI format 0_1 is specified with the condition 2TX_UL_MIMO in 38.508-1 [5] subclause 4.3.6.1.1.2.

2. Set the UE in the Inband 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.

3. 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.

4. For UE transmission OFF power, measure UE EIRP in the Tx beam peak direction in the channel bandwidth of the radio access mode according to the test configuration, which shall meet the requirements described in Table 6.3D.3.1.5-1. EIRP test procedure is defined in Annex K. The period of the measurement shall be the slot prior to the PUSCH transmission, excluding a transient period of 5 µs in the end of the slot and any DL periods. EIRP is calculated considering both polarizations, theta and phi.

5. For UE transmission ON power, measure UE EIRP in the Tx beam peak direction in the channel bandwidth of the radio access mode according to the test configuration, which shall meet the requirements described in Table 6.3D.3.1.5-2. EIRP test procedure is defined in Annex K. The period of the measurement shall be one slot with PUSCH transmission. EIRP is calculated considering both polarizations, theta and phi. For TDD slots with transient periods are not under test.

6. For UE transmission OFF power, measure UE EIRP in the Tx beam peak direction in the channel bandwidth of the radio access mode according to the test configuration, which shall meet the requirements described in Table 6.3D.3.1.5-1. EIRP test procedure is defined in Annex K. The period of the measurement shall be the slot following the PUSCH transmission, excluding a transient period of 5 µs at the beginning of the slot and any DL periods. EIRP is calculated considering both polarizations, theta and phi.

7. SS deactivates the UE Beamlock Function (UBF) by performing the procedure as specified in TS 38.508-1 [10] clause 4.9.3.

NOTE: The BEAM_SELECT_WAIT_TIME default value is defined in Annex K.1.1.

6.3D.3.1.4.3 Message contents

Message contents are according to TS 38.508-1 [5] subclause 4.6 ensuring Table 4.6.3-182 with condition 2TX_UL_MIMO.

Table 6.3D.3.1.4.3-1: PUSCH-ConfigCommon

Derivation Path: TS 38.508-1[10], Table 4.6.3-119
Information Element	Value/remark	Comment	Condition
PUSCH-ConfigCommon ::= SEQUENCE {
p0-NominalWithGrant	-102		50MHz
	-106		100MHz
	-108		200MHz
	-112		400MHz
}

Table 6.3D.3.1.4.3-2: ServingCellConfigCommon

Derivation Path: 38.508-1[5], Table 4.6.3-168
Information Element	Value/remark	Comment	Condition
ServingCellConfigCommon ::= SEQUENCE {
ss-PBCH-BlockPower	4		SCS_120kHz
	7		SCS_240kHz
}

Condition	Explanation
SCS_120kHz	SCS=120kHz for SS/PBCH block
SCS_240kHz	SCS=240kHz for SS/PBCH block

Table 6.3D.3.1.4.3-3: PUSCH-PowerControl

Derivation Path: TS 38.508-1 [10], Table 4.6.3-120
Information Element	Value/remark	Comment	Condition
PUSCH-PowerControl ::= SEQUENCE {
tpc-Accumulation	disabled
p0-AlphaSets SEQUENCE (SIZE (1..maxNrofP0-PUSCH-AlphaSets)) OF SEQUENCE {	1 entry
P0-PUSCH-AlphaSet[1] SEQUENCE {
alpha	alpha1
}
}
}

6.3D.3.1.5 Test requirement

The requirement for the EIRP measured in steps 4, 5 and 6 of the test procedure shall not exceed the values specified in Table 6.3D.3.1.5-1 and 6.3D.3.1.5-2.

Table 6.3D.3.1.5-1: Test requirement of OFF power of General ON/OFF time mask for UL MIMO

	Channel bandwidth / minimum output power / measurement bandwidth
	50 MHz	100 MHz	200 MHz	400 MHz
Transmit OFF power	≤ -30+TT dBm
Transmission OFF Measurement bandwidth	47.58 MHz	95.16 MHz	190.20 MHz	380.28 MHz
Note 1: Core requirements cannot be tested due to testability issue and test requirement includes relaxation to achieve impact from test system noise to measurement results = 1.0 dB (Minimum requirement + relaxation R). Note 2: Relaxation R is specified in Table 6.3D.3.1.5-3.

Table 6.3D.3.1.5-2: Test requirement of ON power of General ON/OFF time mask for UL MIMO

	SCS	Channel bandwidth / measurement bandwidth
	[kHz]	50 MHz	100 MHz	200 MHz	400 MHz
Expected Transmission ON	60	22.1	21.1	22.1	N/A
power for DFT-s-OFDM	120	22.1	21.1	22.1	21.1
Power tolerance		± (14+TT)dB
Note 1: The lower power limit shall not exceed the minimum output power requirements defined in sub-clause 6.3.2.3, and the higher power limit shall not exceed the Max EIRP defined in sub-clause 6.2.1.3.

Table 6.3D.3.1.5-3: Relaxation required for OFF power for PC3 UEs

Operating band	50 MHz	100 MHz	200 MHz	400 MHz
n257, n258, n261	[19.4] dB	[22.4] dB	[25.4] dB	[28.4] dB
n260	[21.5] dB	[24.5] dB	[27.5] dB	[30.5] dB