F.2 Measurement uncertainties and test tolerances for FR2
38.521-43GPPNRPart 4: PerformanceRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
F.2.1 Acceptable uncertainty of test system (normative)
The maximum acceptable uncertainty of the Test System is specified below for each test, where appropriate. The Test System shall enable the stimulus signals in the test case to be adjusted to within the specified range, and the equipment under test to be measured with an uncertainty not exceeding the specified values. Care should be taken to ensure that each conformance test implementation including the OTA chamber aspects meets the specified measurement uncertainty for each test case by requiring the test laboratory to maintain a detailed measurement uncertainty test report showing compliance to all the measurement uncertainty requirements. The detailed measurement uncertainty report would contain the justification for each measurement uncertainty component and its value and distribution. The derivation of these values is based on the minimum conformance requirements plus relaxation, i.e., test tolerance is not to be considered. All ranges and uncertainties are absolute values, and are valid for a confidence level of 95 %, unless otherwise stated.
A confidence level of 95 % is the measurement uncertainty tolerance interval for a specific measurement that contains 95 % of the performance of a population of test equipment.
The downlink signal uncertainties apply at the defined quiet zone with the UE properly positioned in the quiet zone. The uplink signal uncertainties apply at the measurement equipment with the UE positioned properly in the quiet zone.
F.2.1.1 Measurement of test environments
TBD
F.2.1.2 Measurement of Demod Performance requirements
This clause defines the maximum test system uncertainty for Demod Performance requirements. The maximum test system uncertainty allowed for the measurement uncertainty contributors are defined in Table F.2.1.2-1.
Table F.2.1.2-1: Maximum measurement uncertainty values for the test system for FR2 (up to 40 GHz) and Channel BW ≤ 400 MHz
|
MU contributor |
Unit |
Value |
Comment |
||||
|---|---|---|---|---|---|---|---|
|
AWGN flatness and signal flatness, max deviation for any Resource Block, relative to average over BWconfig |
dB |
±3.6 |
|||||
|
gNB emulator Signal to noise ratio uncertainty |
dB |
±0.3 |
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|
Impact on non-ideal isolation between branches for the wireless cable mode |
dB |
0.60 for Rank1 0.45 for Rank2 |
Systematic uncertainty |
||||
|
Fading profile power uncertainty |
dB |
±0.5 for 1Tx ±0.7 for 2Tx |
|||||
|
SNR uncertainty due to finite test time |
dB |
±0.3 for PDSCH and doppler < 100Hz 0.0 for PDSCH and doppler ≥ ±0.4 for PDCCH |
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The maximum test system uncertainty for test cases defined in section 7 is defined in Table F.2.1.2-2.
Table F.2.1.2-2: Maximum test system uncertainty for FR2 demodulation performance test cases
|
Subclause |
Maximum Test System Uncertainty |
Derivation of Test System Uncertainty |
|
7.2.2.2.1_1 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with baseline receiver for SA and NSA |
2Tx, Rank 1: ± 1.82 dB for Doppler < 100 Hz ± 1.78 dB for Doppler ≥100 Hz 2Tx, Rank 2: ± 1.67 dB for Doppler < 100Hz ± 1.63 dB for Doppler ≥100 Hz |
Overall system uncertainty for fading conditions comprises four quantities: 1. gNB emulator Signal-to-noise ratio uncertainty 2. Fading profile power uncertainty 3. Effect of AWGN flatness and signal flatness 4. SNR uncertainty due to finite test time 5. Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator SNR Items 1, 2, 3 and 4 are assumed to be uncorrelated so can be root sum squared: AWGN flatness and signal flatness has x 0.25 effect on the required SNR, so use sensitivity factor of x 0.25 for the uncertainty contribution. Test System uncertainty = SQRT (gNB emulator Signal-to-noise ratio uncertainty 2 + Fading profile power uncertainty 2 + (0.25 x AWGN flatness and signal flatness) 2 + SNR uncertainty due to finite test time2 ) + Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator Signal-to-noise ratio uncertainty ±0.3 dB Fading profile power uncertainty ±0.7 dB AWGN flatness and signal flatness ±3.6 dB SNR uncertainty due to finite test time ±0.3 dB for doppler < 100Hz, otherwise 0 dB Impact on non-ideal isolation between branches for the wireless cable mode 0.60 dB for Rank1, 0.45 dB for Rank2 |
|
7.2.2.2.1_2 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with enhanced type 1 receiver for SA and NSA |
2Tx, Rank 2: ± 1.67 dB for Doppler < 100Hz ± 1.63 dB for Doppler ≥ 100Hz |
Same as 7.2.2.2.1_1 |
|
7.2.2.2.1_3 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with 256QAM for SA and NSA (Rel-16 and forward) |
2Tx, Rank 1: ± 1.82 dB for Doppler < 100 Hz |
Same as 7.2.2.2.1_1 |
|
7.2.2.2.2_1 2Rx TDD FR2 PDSCH repetitions over multiple slots |
FFS |
FFS |
|
7.2.2.2.3_1 2Rx TDD FR2 PDSCH Mapping Type B |
2Tx, Rank 1: ± 1.82 dB for Doppler < 100 Hz |
Same as 7.2.2.2.1_1 |
|
7.2A.2.1 2Rx TDD FR2 CA requirements for normal PDSCH Demodulation Performance for both SA and NSA (2DLCA) |
2Tx, Rank 2: ± 1.67 dB for Doppler < 100Hz |
Overall system uncertainty for fading conditions comprises four quantities: 1. gNB emulator Signal-to-noise ratio uncertainty 2. Fading profile power uncertainty 3. Effect of AWGN flatness and signal flatness 4. SNR uncertainty due to finite test time 5. Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator SNR Items 1, 2, 3 and 4 are assumed to be uncorrelated so can be root sum squared: AWGN flatness and signal flatness has x 0.25 effect on the required SNR, so use sensitivity factor of x 0.25 for the uncertainty contribution. Test System uncertainty = SQRT (gNB emulator Signal-to-noise ratio uncertainty 2 + Fading profile power uncertainty 2 + (0.25 x AWGN flatness and signal flatness) 2 + SNR uncertainty due to finite test time2 ) + Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator Signal-to-noise ratio uncertainty ±0.3 dB Fading profile power uncertainty ±0.7 dB AWGN flatness and signal flatness ±3.6 dB SNR uncertainty due to finite test time ±0.3 dB for doppler < 100Hz, otherwise 0 dB Impact on non-ideal isolation between branches for the wireless cable mode 0.45 dB for Rank2 |
|
7.2A.2.2 2Rx TDD FR2 CA requirements for normal PDSCH Demodulation Performance for both SA and NSA (3DLCA) |
Same as 7.2A.2.1 |
Same as 7.2A.2.1 |
|
7.3.2.2.1 2Rx TDD FR2 PDCCH 1 Tx antenna performance for both SA and NSA |
1Tx, rank1: ± 1.74 dB |
Overall system uncertainty for fading conditions comprises four quantities: 1. gNB emulator Signal-to-noise ratio uncertainty 2. Fading profile power uncertainty 3. Effect of AWGN flatness and signal flatness 4. SNR uncertainty due to finite test time 5. Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator SNR Items 1, 2, 3 and 4 are assumed to be uncorrelated so can be root sum squared: AWGN flatness and signal flatness has x 0.25 effect on the required SNR, so use sensitivity factor of x 0.25 for the uncertainty contribution. Test System uncertainty = SQRT (gNB emulator Signal-to-noise ratio uncertainty 2 + Fading profile power uncertainty 2 + (0.25 x AWGN flatness and signal flatness) 2 + SNR uncertainty due to finite test time2 ) + Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator Signal-to-noise ratio uncertainty ±0.3 dB Fading profile power uncertainty ±0.5 dB for 1Tx, ±0.7 dB for 2Tx AWGN flatness and signal flatness ±3.6 dB SNR uncertainty due to finite test time ±0.4 dB Impact on non-ideal isolation between branches for the wireless cable mode 0.6 for Rank1 and 0.45 for rank2 |
|
7.3.2.2.2 2Rx TDD FR2 PDCCH 2 Tx antenna performance for both SA and NSA |
2Tx, rank1: ± 1.84 dB |
Same as 7.3.2.2.1 |
|
7.3.2.2.3 2Rx TDD FR2 PDCCH 1 Tx antenna performance for power saving |
1Tx, rank1: ± 1.74 dB |
Same as 7.3.2.2.1 |
|
7.5.1 FR2 Sustained downlink data rate performance for single carrier |
Downlink absolute power uncertainty (including beam peak search , averaged over BWConfig ± 5.19 dB |
Downlink absolute power uncertainty (including beam peak search error) is one of the factors used to determine the max testable SNR for a given Test System as listed in sheet “Mode2 100MHz” in 38.521-4 Spreadsheet – Demod SNR range calculator V3.xlsx of TR 38.903 |
|
7.5A.1.1 FR2 SDR performance for CA |
Maximum aggregated BW 400MHz, same as 7.5.1
Maximum aggregated BW 400MHz, TBD
|
Same as 7.5.1 |
|
9.4B.1.2 Sustained downlink data rate performance for EN-DC including FR2 NR carrier |
Downlink absolute power uncertainty (including beam peak search , averaged over BWConfig ± 5.19 dB |
Downlink absolute power uncertainty (including beam peak search error) is one of the factors used to determine the max testable SNR for a given Test System as listed in sheet “Mode2 100MHz” in 38.521-4 Spreadsheet – Demod SNR range calculator V3.xlsx of TR 38.903 |
F.2.1.3 Measurement of Channel State Information reporting
This clause defines the maximum test system uncertainty for channel state information reporting requirements. The maximum test system uncertainty allowed for the measurement uncertainty contributors are defined in Table F.2.1.3-1.
Table F.2.1.3-1: Maximum measurement uncertainty values for the test system for FR2 (up to 40 GHz) and Channel BW ≤ 400 MHz
|
MU contributor |
Unit |
Value |
Comment |
||||
|---|---|---|---|---|---|---|---|
|
AWGN flatness and signal flatness, max deviation for any Resource Block, relative to average over BWconfig |
dB |
Same as in table F.2.1.2-1 |
|||||
|
Signal to noise ratio uncertainty |
dB |
Same as in table F.2.1.2-1 |
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|
Impact on non-ideal isolation between branches for the wireless cable mode |
dB |
Same as in table F.2.1.2-1 |
|||||
|
Fading profile power uncertainty |
dB |
Same as in table F.2.1.2-1 |
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The maximum test system uncertainty for test cases defined in section 8 is defined in Table F.2.1.3-2.
Table F.2.1.3-2: Maximum test system uncertainty for FR2 channel state information reporting test cases
|
Subclause |
Maximum Test System Uncertainty |
Derivation of Test System Uncertainty |
|||
|
8.2.2.2.1.1 2 Rx TDD FR2 periodic wideband CQI reporting under AWGN performance for both SA and NSA |
± 1.40 dB |
Overall system uncertainty under AWGN conditions comprises three quantities: 1. gNB emulator Signal-to-noise ratio uncertainty 2. Effect of AWGN flatness and signal flatness 3. Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator SNR Items 1 and 2 are assumed to be uncorrelated so can be root sum squared: AWGN flatness and signal flatness has x [0.25] effect on the required SNR, so use sensitivity factor of x [0.25] for the uncertainty contribution. Test System uncertainty = SQRT (gNB emulator Signal-to-noise ratio uncertainty 2 + (0.25 x AWGN flatness and signal flatness) 2 ) + Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator Signal-to-noise ratio uncertainty ±0.3 dB AWGN flatness and signal flatness ±3.6 dB Impact on non-ideal isolation between branches for the wireless cable mode 0.45 dB for Rank2 and 0.6 for Rank1 |
|||
|
8.2.2.2.2.1 2 Rx TDD FR2 aperiodic wideband CQI reporting under fading performance for both SA and NSA |
± 1.82 dB for Doppler < 100Hz |
Overall system uncertainty for fading conditions comprises five quantities: 1. gNB emulator Signal-to-noise ratio uncertainty 2. Fading profile power uncertainty 3. Effect of AWGN flatness and signal flatness 4. SNR uncertainty due to finite test time 5. Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator SNR Items 1, 2, 3 and 4 are assumed to be uncorrelated so can be root sum squared: AWGN flatness and signal flatness has x 0.25 effect on the required SNR, so use sensitivity factor of x 0.25 for the uncertainty contribution. Test System uncertainty = SQRT (gNB emulator Signal-to-noise ratio uncertainty 2 + Fading profile power uncertainty 2 + (0.25 x AWGN flatness and signal flatness) 2 + SNR uncertainty due to finite test time2 ) + Impact on non-ideal isolation between branches for the wireless cable mode gNB emulator Signal-to-noise ratio uncertainty ±0.3 dB Fading profile power uncertainty ±0.7 dB for 2Tx AWGN flatness and signal flatness ±3.6 dB SNR uncertainty due to finite test time ±0.3 dB Impact on non-ideal isolation between branches for the wireless cable mode 0.6 for Rank1 and 0.45 for Rank2 |
|||
|
8.2.2.2.2.1_1 2Rx TDD FR2 aperiodic wideband CQI reporting under fading performance for both SA and NSA – 256QAM (Rel-16 and forward) |
Same as 8.2.2.2.2.1 |
Same as 8.2.2.2.2.1 |
|||
|
8.2A.3.1.1 2Rx CQI reporting accuracy under AWGN conditions for CA (2DL CA) |
Same as 8.2.2.2.1.1 on each CC. |
Same as 8.2.2.2.1.1 |
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|
8.2A.3.1.2 2Rx CQI reporting accuracy under AWGN conditions for CA (3DL CA) |
Same as 8.2.2.2.1.1 on each CC. |
Same as 8.2.2.2.1.1 |
|||
|
8.2A.3.1.3 2Rx CQI reporting accuracy under AWGN conditions for CA (4DL CA) |
Same as 8.2.2.2.1.1 on each CC. |
Same as 8.2.2.2.1.1 |
|||
|
8.3.2.2.1 2Rx TDD FR2 Single PMI with 2TX TypeI-SinglePanel codebook for both SA and NSA |
Same as 8.2.2.2.2.1 |
Same as 8.2.2.2.2.1 |
|||
|
8.4.2.2.1 2Rx TDD FR2 RI reporting for both SA and NSA |
Same as 8.2.2.2.2.1 |
Same as 8.2.2.2.2.1 |
F.2.2 Interpretation of measurement results (normative)
The actual measurement uncertainty of the Test System for the measurement of each parameter shall be included in the test report.
The recorded value for the Test System uncertainty shall be, for each measurement, equal to or lower than the appropriate figure in clause F.1 of the present document.
If the Test System using one of the permitted test methods defined in TR38.903 [20] for a test is known to have a measurement uncertainty greater than that specified in clause F.1, it is still permitted to use this apparatus provided that an adjustment is made value as follows:
Any additional uncertainty in the Test System over and above that specified in clause F.1 shall be used to tighten the Test Requirement, making the test harder to pass. For some tests, for example receiver tests, this may require modification of stimulus signals. This procedure will ensure that a Test System not compliant with clause F.1does not increase the chance of passing a device under test where that device would otherwise have failed the test if a Test System compliant with clause F.1 had been used.
F.2.3 Test Tolerance and Derivation of Test Requirements (informative)
TBD
F.2.3.1 Measurement of test environments
TBD
F.2.3.2 Measurement of Demod Performance requirements
The derivation of the test requirements for the test cases in section 7 is defined in Table F.2.3.2-1.
Table F.2.3.2-1: Derivation of Test Requirements (FR2 demodulation performance tests)
|
Test |
Minimum Requirement in TS 38.101-4 |
Test Tolerance |
Test Requirement in TS 38.521-4 |
|
7.2.2.2.1_1 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with baseline receiver for SA and NSA |
SNRs as specified |
2Tx, Rank 1: 1.8 dB 2Tx, Rank 2: 1.7 dB for doppler < 100Hz 1.6 dB otherwise |
Formula: SNR + TT T-put limit unchanged |
|
7.2.2.2.1_2 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with enhanced type 1 receiver for SA and NSA |
SNRs as specified |
2Tx, Rank 2: 1.7 dB for doppler < 100Hz 1.6 dB otherwise |
Formula: SNR + TT T-put limit unchanged |
|
7.2.2.2.1_3 2Rx TDD FR2 PDSCH mapping Type A performance – 2×2 MIMO with 256QAM for SA and NSA (Rel-16 and forward) |
SNRs as specified |
2Tx, Rank 1: 1.8 dB |
Formula: SNR + TT T-put limit unchanged |
|
7.2.2.2.2_1 2Rx TDD FR2 PDSCH repetitions over multiple slots |
SNRs as specified |
FFS |
FFS |
|
7.2.2.2.3_1 2Rx TDD FR2 PDSCH Mapping Type B |
SNRs as specified |
2Tx, Rank 1: 1.8 dB |
T-put limit unchanged |
|
7.2A.2.1 2Rx TDD FR2 CA requirements for normal PDSCH Demodulation Performance for both SA and NSA (2DLCA) |
SNRs as specified |
2Tx, Rank 2: 1.7 dB |
Formula: SNR + TT T-put limit unchanged |
|
7.2A.2.2 2Rx TDD FR2 CA requirements for normal PDSCH Demodulation Performance for both SA and NSA (3DLCA) |
Same as 7.2A.2.1 |
Same as 7.2A.2.1 |
Same as 7.2A.2.1 |
|
7.3.2.2.1 2Rx TDD FR2 PDCCH 1 Tx antenna performance for both SA and NSA |
SNRs as specified |
1Tx, rank1: 1.7 dB |
Formula: SNR + TT T-put limit unchanged |
|
7.3.2.2.2 2Rx TDD FR2 PDCCH 2 Tx antenna performance for both SA and NSA |
SNRs as specified |
2Tx, rank1: 1.8 dB |
Formula: SNR + TT T-put limit unchanged |
|
7.3.2.2.3 2Rx TDD FR2 PDCCH 1 Tx antenna performance for power saving |
SNRs as specified |
1Tx, rank1: 1.7 dB |
Formula: SNR + TT T-put limit unchanged |
|
7.5.1 FR2 Sustained downlink data rate performance for single carrier |
Power level as applied in the test procedure |
No test tolerance applied |
T-put limit unchanged |
|
7.5A.1.1 FR2 SDR performance for CA |
Same as 7.5.1 |
Same as 7.5.1 |
Same as 7.5.1 |
|
9.4B.1.2 Sustained downlink data rate performance for EN-DC including FR2 NR carrier |
Indirect far field (IFF) with 30cm QZ, PC3, 100MHz CHBW Downlink power n257, n261: -79.5 dBm/120 kHz n258: -79.2 dBm/120 kHz |
No test tolerance applied |
T-put limit unchanged |
F.2.3.3 Measurement of Channel State Information reporting
The derivation of the test requirements for the test cases in section 8 is defined in Table F.2.3.3-1.
Table F.2.3.3-1: Derivation of Test Requirements (FR2 channel state information reporting tests)
|
Test |
Minimum Requirement in TS 38.101-4 |
Test Tolerance |
Test Requirement in TS 38.521-4 |
|
8.2.2.2.1.1 2 Rx TDD FR2 periodic wideband CQI reporting under AWGN performance for both SA and NSA |
SNRs as specified Limits as in the Test Procedure |
No test tolerances applied |
SNR unchanged |
|
8.2.2.2.2.1 2 Rx TDD FR2 aperiodic wideband CQI reporting under fading performance for both SA and NSA |
SNRs as specified 2% 1.05 BLER 0.02 |
SNR 0 dB 0% 0.01 BLER 0 |
SNR unchanged unchanged 1.04 BLER limit unchanged |
|
8.2.2.2.2.1_1 2Rx TDD FR2 aperiodic wideband CQI reporting under fading performance for both SA and NSA |
SNRs as specified 2% 1.05 BLER 0.02 |
SNR 0 dB 0% 0.01 BLER 0 |
SNR unchanged unchanged 1.04 BLER limit unchanged |
|
8.2A.3.1.1 2Rx CQI reporting accuracy under AWGN conditions for CA (2DL CA) |
SNRs as specified Limits as in the Test Procedure |
No test tolerances applied |
Test requirement unchanged |
|
8.2A.3.1.2 2Rx CQI reporting accuracy under AWGN conditions for CA (3DL CA) |
SNRs as specified Limits as in the Test Procedure |
No test tolerances applied |
Test requirement unchanged |
|
8.2A.3.1.3 2Rx CQI reporting accuracy under AWGN conditions for CA (4DL CA) |
SNRs as specified Limits as in the Test Procedure |
No test tolerances applied |
Test requirement unchanged |
|
8.3.2.2.1 2Rx TDD FR2 Single PMI with 2TX TypeI-SinglePanel codebook for both SA and NSA |
SNRs as specified 1.05 for Test 1 1.05 for Test 2 |
SNR 0 dB 0.01 for Test 1 0.01 for Test 2 |
SNR unchanged 1.04 for Test 1 1.04 for Test 2 |
|
8.4.2.2.1 2Rx TDD FR2 RI reporting for both SA and NSA |
SNRs as specified 1.00 for Test 1 1.05 for Test 2 1.05 for Test 3 |
SNR 0 dB 0.01 for Test 1 0.01 for Test 2 0.01 for Test 3 |
SNR unchanged 0.99 for Test 1 1.04 for Test 2 1.04 for Test 3 |
Annex G (normative):
Statistical Testing