6.2A Reporting of Channel Quality Indicator (CQI) for CA

38.521-43GPPNRPart 4: PerformanceRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

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

6.2A.1 General

This clause includes the requirements for the reporting of channel quality indicator (CQI) with the UE configured for CA. The purpose is to verify that the CQI is correctly reported in accordance with the CQI definition given in TS 38.214 [12] for each CC with multiple cells configured for periodic reporting.

6.2A.2 1RX requirements

(Void)

6.2A.3 2RX requirements

6.2A.3.1 CQI reporting definition under AWGN conditions

6.2A.3.1.0 Minimum requirement for periodic CQI reporting

For each CA CQI reporting test defined in Table 6.2A.3.1.0-6, the test requirements and the test parameters are defined as below.

For each CC, the test parameters are specified in Table 6.2A.3.1.0-1. The additional parameters specified in Table 6.2A.3.1.0-2 are applicable for tests on FDD CC. The additional parameters specified in Table 6.2A.3.1.0-3 are applicable for tests on TDD CC.

For CA with 2 DL CC, for the SNR configuration specified in Table 6.2A.3.1.0-4, and using the downlink physical channels specified in Annex C.3.1 on each CC, the difference between the wideband CQI indices of PCell and SCell reported shall be such that

wideband CQI_PCell – wideband CQI_SCell ≥ 2

for more than 90% of the time.

For CA with 3 or more DL CC, for the SNR configuration specified in Table 6.2A.3.1.0-5, and using the downlink physical channels specified in Annex C.3.1 on each cell, the difference between the wideband CQI indices of PCell and SCell1 reported, and the difference between the wideband CQI indices of SCell1 and SCell2, 3… reported shall be such that

wideband CQI_PCell – wideband CQI_SCell1 ≥ 2

wideband CQI_SCell1 – wideband CQI_{SCell2, 3…} ≥ 2

for more than 90% of the time.

Table 6.2A.3.1.0-1: CA CQI reporting test parameters for FDD and TDD CC

Parameter		Unit	Value
Propagation channel			AWGN
Antenna configuration			1×2 with static channel specified in Annex B.1
ZP CSI-RS configuration	CSI-RS resource Type		Periodic
	Number of CSI-RS ports (X)		4
	CDM Type		FD-CDM2
	Density (ρ)		1
	First subcarrier index in the PRB used for CSI-RS (k₀)		Row 5, 4
	First OFDM symbol in the PRB used for CSI-RS (l₀)		9
NZP CSI-RS for CSI acquisition	CSI-RS resource Type		Periodic
	Number of CSI-RS ports (X)		1
	CDM Type		No CDM
	Density (ρ)		1
	First subcarrier index in the PRB used for CSI-RS (k₀)		Row 2, 6
	First OFDM symbol in the PRB used for CSI-RS (l₀)		13
CSI-IM configuration	CSI-IM resource Type		Periodic
	CSI-IM RE pattern		0
	CSI-IM Resource Mapping (k_CSI-IM,l_CSI-IM)		(4, 9)
ReportConfigType			Periodic
CQI-table			Table 2
reportQuantity			cri-RI-PMI-CQI
timeRestrictionForChannelMeasurements			Not configured
timeRestrictionForInterferenceMeasurements			Not configured
cqi-FormatIndicator			Wideband
pmi-FormatIndicator			Wideband
Csi-ReportingBand			1111111
aperiodicTriggeringOffset			Not configured
Physical channel for CSI report			PUCCH
Maximum number of HARQ transmission			1
Measurement channel			Derived as per section 5.1.3.2 of TS 38.214 [12]

Table 6.2A.3.1.0-2: Additional test parameters for FDD CC

Parameter		Unit	Value
Duplex Mode			FDD
Subcarrier spacing		kHz	15
ZP CSI-RS configuration	CSI-RS periodicity and offset	slot	5/1
NZP CSI-RS for CSI acquisition	NZP CSI-RS-timeConfig periodicity and offset	slot	5/1
			10/1 if configured as SCell with TDD PCell (Test1)
CSI-IM configuration	CSI-IM timeConfig periodicity and offset	slot	5/1
CSI-Report periodicity and offset		slot	5/0 if configured as PCell
			5/1 if configured as SCell with FDD PCell (Test2)
			20/18 if configured as SCell with TDD PCell (Test1)
CQI/RI/PMI delay		ms	8 if configured as PCell
			12 if configured as SCell
Sub-band Size		RB	8 for 5MHz and 10MHz, 16 for 15MHz, 20MHz and 25MHz, 32 for 30MHz, 35MHz, 40MHz, 45MHz and 50MHz
Note 1: NZP CSI-RS periodicity/offset slots are based on the carrier SCS and CSI reporting periodicity/offset slots are based on the PCell SCS.

Table 6.2A.3.1.0-3: Additional test parameters for TDD CC

Parameter		Unit	Value
Duplex Mode			TDD
Subcarrier spacing		kHz	30
TDD UL-DL pattern			FR1.30-1
ZP CSI-RS configuration	CSI-RS periodicity and offset	slot	10/1
NZP CSI-RS for CSI acquisition	NZP CSI-RS-timeConfig periodicity and offset	slot	10/1 if configured as SCell with FDD PCell (Test1)
			20/1
CSI-IM configuration	CSI-IM timeConfig periodicity and offset	slot	10/1
CSI-Report periodicity and offset		slot	20/19 if configured as PCell
			20/18 if configured as SCell with TDD PCell (Test3)
			5/1 if configured as SCell with FDD PCell (Test1)
CQI/RI/PMI delay		ms	14.5 if configured as PCell
			12.5 if configured as SCell with TDD PCell (Test3)
			9.5 if configured as SCell with FDD PCell (Test1)
Sub-band Size		RB	8 for 10MHz, 15MHz, 20MHz and 25MHz, 16 for 30MHz, 40MHz and 50MHz, 32 for 60MHz, 80MHz, 90MHz and 100MHz
Note 1: NZP CSI-RS periodicity/offset slots are based on the carrier SCS and CSI reporting periodicity/offset slots are based on the PCell SCS.

Table 6.2A.3.1.0-4: SNR configurations for 2 DL CA

Parameter	PCell	SCell
SNR (dB)	10.0	4.0

Table 6.2A.3.1.0-5: SNR configurations for 3 or more DL CA

Parameter	PCell	SCell1	SCell2, 3…
SNR (dB)	12.0	6.0	0.0

Table 6.2A.3.1.0-6: List of CA CQI reporting test

Test number	CA duplex mode and SCS combination
1	FDD 15 kHz + TDD 30 kHz
2	FDD 15 kHz + FDD 15 kHz
3	TDD 30 kHz + TDD 30 kHz
Note 1: The applicability of requirements for different CA duplex modes, SCSs, is defined in 6.1.1.5.1. Note 2: The applicability of requirements for different CA configurations and bandwidth combination sets is defined in 6.1.1.5.2.

The normative reference for this requirement is TS 38.101-4 [5], clause 6.2A.3.1.1.

6.2A.3.1.1 2Rx CQI reporting accuracy under AWGN conditions for CA (2DL CA)

Editor’s note: EN-DC applicability of this test case is FFS in TS 38.522.

6.2A.3.1.1.1 Test Purpose

To verify that the CQI is correctly reported in accordance with the CQI definition given in TS 38.214 [12] for each CC with multiple cells configured for periodic reporting.

6.2A.3.1.1.2 Test applicability

This test applies to all types of NR UE release 15 and forward that supports 2DL CA.

6.2A.3.1.1.3 Test description

6.2A.3.1.1.3.1 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, test frequencies, test channel bandwidths and sub-carrier spacing based on NR operating bands specified in Table 5.3.5-1 and Table 5.3.6-1 of 38.521-1 [7].

Configurations of PDSCH and PDCCH before measurement are specified in Annex C.

Test Environment: Normal, as defined in TS 38.508-1 [6] clause 4.1.

Frequencies to be tested: Mid Range, as defined in TS 38.508-1 [6] clause 5.2.2.

For EN-DC within FR1 operation, setup the LTE link according to Annex D

CA capability to be tested: test any one of the supported CA capabilities with largest aggregated CA bandwidth combination, as specified in 6.1.1.5.2.

CA configuration to be tested: For the selected CA capability, test any one of the supported CA configurations with largest aggregated CA bandwidth combination, as specified in 6.1.1.5.2.

Table 6.2A.3.1.1.3.1-1: Test point selection table

Test number	CA duplex mode	Configuration	PCell CC configuration
1	FDD 15 kHz + TDD 30 kHz	As defined in Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-3	TDD CC if supported, otherwise FDD CC
2 (Note 2)	FDD 15 kHz + FDD 15 kHz	As defined in Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-2	Any of CCs
3	TDD 30 kHz + TDD 30 kHz	As defined in Table 6.2A.3.1.0-1 and Table 6.2A.3.1.0-3	Any of CCs
NOTE 1: The test coverage can be considered fulfilled if UE passes one of the CC as PCell in Test 1. NOTE 2: These scenarios are only tested for UEs which are not verified with Test 1.

1. Connect the SS and AWGN noise source to the UE antenna connectors as shown in TS 38.508-1 [6] Annex A Figure A.3.1.7.2A for TE diagram, Figure A.3.2.3 for UE supporting only 2Rx RF bands on all CC. Annex A, Figure A.3.2.5 for UE supporting 4Rx on some or all the CCs.

2. The parameter settings for the cell are set up according to Table 6.1.2-1, and Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-3 as appropriate.

3. Downlink signals for NR cell are initially set up according to Annexes C.0, C.1, C.2 and uplink signals according to Annexes G.0, G.1, G.2, G.3.1 of TS 38.521-1 [7].

4. Propagation conditions are set according to Annex B.1.

5. Ensure the UE is in state RRC_CONNECTED with generic procedure parameters Connectivity NR for SA with Connected without release On, Test Mode On or EN-DC, DC bearer MCG and SCG, Connected without release On, Test Mode On for NSA according to TS 38.508-1 [6] clause 4.5. Message contents are defined in clause 6.2A.3.1.1.3.3.

6.2A.3.1.1.3.2 Test Procedure

1. Configure SCC according to Annex C.0, C.1 and C.2 for all downlink physical channels.

2. The SS shall configure SCC as per TS 38.508-1 [6] clause 5.5.1. Message contents are defined in clause 6.2A.3.1.1.3.3.

3. SS activates SCC by sending the activation MAC-CE (Refer TS 38.321 [24], clauses 5.9, 6.1.3.10). Wait for at least 1 second (Refer TS 38.133[25], clause9.3).

4. Set the parameters of bandwidth, reference channel, propagation condition and antenna configuration according to Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-3 as appropriate. Set the SNR according to Table 6.2A.3.1.0-4 as appropriate for PCC and SCC (For UE supporting 4Rx antenna ports on a given CC, the SNR is reduced by 3dB for that CC).

5. SS transmits PDSCH via PDCCH DCI format 1_1 for C_RNTI to transmit the DL RMC on both PCC and SCC. The SS sends downlink MAC padding bits on the DL RMC.

6. The SS shall start gathering CQI reports, and will continue gathering CQI reports until 2000 wideband CQI reports have been gathered for each PCC and SCC. For each CSI report calculate the respective difference CQI_P-S = wideband CQI_PCell – wideband CQI_SCell.

7. If more than 1800 values of CQI_P-S are ≥ 2 pass the UE. Otherwise fail the UE.

8. Repeat steps from 1 to 7 for each test point in Table 6.2A.3.1.1.3.1-1 as appropriate.

6.2A.3.1.1.3.3 Message contents

Message contents are according to TS 38.508 [6] clause 5.4.2 with the following exceptions:

6.2A.3.1.1.3.3_1 Message exceptions for SA

Table 6.2A.3.1.1.3.3_1-1: CSI-RS-ResourceMapping

Derivation Path: TS 38.508-1 [6], Table 5.4.2.4-2
Information Element	Value/remark	Comment	Condition
CSI-RS-ResourceMapping ::= SEQUENCE {
frequencyDomainAllocation CHOICE {
row2	0000 1000 0000	k0= 4, row2
}
density CHOICE {
one	NULL
}
}

Table 6.2A.3.1.1.3.3_1-2: NZP CSI-ResourcePeriodicityAndOffset

Derivation Path: TS 38.508-1 [6], Table 5.4.2.4-2a
Information Element	Value/remark	Comment	Condition
CSI-ResourcePeriodicityAndOffset ::= CHOICE {
slots5	1		For FDD CC
slot10	1		(For TDD CC if configured as SCell with FDD PCell (Test1)) OR (For FDD CC if configured as SCell with TDD PCell (Test1))
Slot20	1		For TDD CC
}

Table 6.2A.3.1.1.3.3_1-3: CSI-IM-Resource

Derivation Path: TS 38.508-1 [6], Table 5.4.2.4-6
Information Element	Value/remark	Comment	Condition
CSI-IM-Resource ::= SEQUENCE {
periodicityAndOffset SEQUENCE {
slots5	1		For FDD CC
slots10	1		For TDD CC
}
}

Table 6.2A.3.1.1.3.3_1-4: CSI-ReportConfig

Derivation Path: TS 38.508-1 [6], Table 5.4.2.4-12
Information Element	Value/remark	Condition
CSI-ReportConfig ::= SEQUENCE {
subbandSize	8	For the CC with FDD 15kHz SCS 5MHz and 10MHz CHBW; For the CC with TDD 30kHz SCS 10MHz, 15MHz, 20MHz and 25MHz CHBW.
	16	For the CC with FDD 15kHz SCS 15MHz, 20MHz and 25MHz CHBW; For the CC with TDD 30kHz SCS 30MHz, 40MHz and 50MHz CHBW.
	32	For the CC with FDD 15kHz SCS 30MHz, 35MHz, 40MHz, 45MHz and 50MHz CHBW; For the CC with TDD 30kHz SCS 60MHz, 80MHz, 90MHz and 100MHz CHBW.
}

6.2A.3.1.1.3.3_2 Message exceptions for NSA

Same as specified in 6.2A.3.1.1.3.3_2.

6.2A.3.1.1.4 Test Requirements

The pass fail decision is as specified in the test procedure in clause 6.2A.3.1.1.3.2.

There are no parameters in the test setup or measurement process whose variation impacts the results so there are no applicable test tolerances for this test.

6.2A.3.1.2 2Rx CQI reporting accuracy under AWGN conditions for CA (3DL CA)

Editor’s note: EN-DC applicability of this test case is FFS in TS 38.522.

6.2A.3.1.2.1 Test Purpose

Same with 6.2A.3.1.1.1.

6.2A.3.1.2.2 Test applicability

This test applies to all types of NR UE release 15 and forward that supports 3DL CA.

6.2A.3.1.2.3 Test description

6.2A.3.1.2.3.1 Initial conditions

Same with 6.2A.3.1.1.3.1.

6.2A.3.1.2.3.2 Test Procedure

1. Configure SCCs according to Annex C.0, C.1 and C.2 for all downlink physical channels.

2. The SS shall configure SCCs as per TS 38.508-1 [6] clause 5.5.1. Message contents are defined in clause 6.2A.3.1.2.3.3.

3. SS activates SCCs by sending the activation MAC-CE (Refer TS 38.321 [24], clauses 5.9, 6.1.3.10). Wait for at least 1 second (Refer TS 38.133[25], clause9.3).

4. Set the parameters of bandwidth, reference channel, propagation condition and antenna configuration according to Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-3 as appropriate. Set the SNR according to Table 6.2A.3.1.0-5 as appropriate for PCC and SCCs (For a UE supporting 4Rx antenna ports on a given CC, the SNR is reduced by 3dB for that CC).

5. SS transmits PDSCH via PDCCH DCI format 1_1 for C_RNTI to transmit the DL RMC on both PCC and SCCs. The SS sends downlink MAC padding bits on the DL RMC.

6. The SS shall start gathering CQI reports, and will continue gathering CQI reports until 2000 wideband CQI reports have been gathered for each PCC and SCCs. For each CSI report calculate the respective difference CQI_P-S1 = wideband CQI_PCell – wideband CQI_SCell1 and the respective difference CQI_S1-S2 = wideband CQI_SCell1 – wideband CQI_SCell2.

7. If more than 1800 values of CQI_P-S1 are ≥ 2 and more than 1800 values of CQI_S1-S2 are ≥ 2_,pass the UE. Otherwise fail the UE.

8. Repeat steps from 1 to 7 for each test point in Table 6.2A.3.1.0-6 as appropriate.

6.2A.3.1.2.3.3 Message contents

Same with 6.2A.3.1.1.3.3.

6.2A.3.1.2.4 Test Requirements

The pass fail decision is as specified in the test procedure in clause 6.2A.3.1.2.3.2.

There are no parameters in the test setup or measurement process whose variation impacts the results so there are no applicable test tolerances for this test.

6.2A.3.1.3 2Rx CQI reporting accuracy under AWGN conditions for CA (4DL CA)

Editor’s note: EN-DC applicability of this test case is FFS in TS 38.522.

6.2A.3.1.3.1 Test Purpose

Same with 6.2A.3.1.1.1.

6.2A.3.1.3.2 Test applicability

This test applies to all types of NR UE release 15 and forward that supports 4DL CA.

6.2A.3.1.3.3 Test description

6.2A.3.1.3.3.1 Initial conditions

Same with 6.2A.3.1.1.3.1.

6.2A.3.1.3.3.2 Test Procedure

1. Configure SCCs according to Annex C.0, C.1 and C.2 for all downlink physical channels.

2. The SS shall configure SCCs as per TS 38.508-1 [6] clause 5.5.1. Message contents are defined in clause 6.2A.3.1.3.3.3.

3. SS activates SCCs by sending the activation MAC-CE (Refer TS 38.321 [24], clauses 5.9, 6.1.3.10). Wait for at least 1 second (Refer TS 38.133[25], clause9.3).

4. Set the parameters of bandwidth, reference channel, propagation condition and antenna configuration according to Table 6.2A.3.1.0-1 to Table 6.2A.3.1.0-3 as appropriate. Set the SNR according to Table 6.2A.3.1.0-5 as appropriate for PCC and SCCs (For a UE supporting 4Rx antenna ports on a given CC, the SNR is reduced by 3dB for that CC).

5. SS transmits PDSCH via PDCCH DCI format 1_1 for C_RNTI to transmit the DL RMC on both PCC and SCCs. The SS sends downlink MAC padding bits on the DL RMC.

6. The SS shall start gathering CQI reports, and will continue gathering CQI reports until 2000 wideband CQI reports have been gathered for each PCC and SCCs. For each CSI report calculate the respective difference CQI_P-S1 = wideband CQI_PCell – wideband CQI_SCell1, the respective difference CQI_S1-S2 = wideband CQI_SCell1 – wideband CQI_SCell2and the respective difference CQI_S1-S3 = wideband CQI_SCell1 – wideband CQI_SCell3.

7. If more than 1800 values of CQI_P-S1 are ≥ 2, more than 1800 values of CQI_S1-S2 are ≥ 2 and more than 1800 values of CQI_S1-S3 are ≥ 2_,pass the UE. Otherwise fail the UE.

8. Repeat steps from 1 to 7 for each test point defined in Table 6.2A.3.1.0-6 as appropriate.

6.2A.3.1.3.3.3 Message contents

Same with 6.2A.3.1.1.3.3.

6.2A.3.1.3.4 Test Requirements

The pass fail decision is as specified in the test procedure in clause 6.2A.3.1.3.3.2.

There are no parameters in the test setup or measurement process whose variation impacts the results so there are no applicable test tolerances for this test.