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TECHNICAL REPORT
5G;
NR;
Derivation of test tolerances and measurement uncertainty for
User Equipment (UE) conformance test cases
(3GPP TR 38.903 version 15.1.0 Release 15)
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3GPP TR 38.903 version 15.1.0 Release 15 1 ETSI TR 138 903 V15.1.0 (2019-04)
Reference
RTR/TSGR-0538903vf10
Keywords
5G
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3GPP TR 38.903 version 15.1.0 Release 15 2 ETSI TR 138 903 V15.1.0 (2019-04)
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Foreword
This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
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The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TR 38.903 version 15.1.0 Release 15 3 ETSI TR 138 903 V15.1.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
Introduction . 7
1 Scope . 8
2 References . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 General Principles . 9
4.1 Principle of Superposition . 9
4.2 Sensitivity analysis . 10
4.3 Statistical combination of uncertainties . 10
4.4 Correlation between uncertainties . 11
4.4.1 Uncorrelated uncertainties . 11
4.4.2 Positively correlated uncertainties . 11
4.4.3 Negatively correlated uncertainties . 12
4.4.4 Treatment of uncorrelated uncertainties . 13
4.4.5 Treatment of positively correlated uncertainties with adverse effect . 13
4.4.6 Treatment of positively correlated uncertainties with beneficial effect . 13
4.4.7 Treatment of negatively correlated uncertainties . 13
5 Determination of Test System Uncertainties . 13
5.1 General . 13
5.2 Uncertainty figures . 14
6 Determination of Test Tolerances . 14
6.1 General . 14
7 Grouping of test cases defined in TS 38.521-4 . 14
8 Grouping of test cases defined in TS 38.533 . 14
Annex A: Derivation documents for test tolerance . 15
Annex B: Acceptable uncertainty of test system for test cases defined in TS 38.521-2 for
radiative testing . 16
B.1 Uncertainty budget calculation principle. 16
B.1.1 Uncertainty budget calculation principle for DFF . 16
B.1.2 Uncertainty budget calculation principle for IFF . 16
B.1.3 Uncertainty budget calculation principle for NFTF . 16
B.2 Measurement error contribution descriptions . 16
B.2.1 Measurement error contribution descriptions for DFF . 16
B.2.1.1 Positioning misalignment . 16
B.2.1.2 Measure distance uncertainty . 16
B.2.1.3 Quality of quiet zone. 17
B.2.1.4 Mismatch . 17
B.2.1.5 Standing Wave Between the DUT and measurement antenna . 19
B.2.1.6 Uncertainty of the RF power measurement equipment . 19
B.2.1.7 Phase curvature . 19
B.2.1.8 Amplifier uncertainties . 19
B.2.1.9 Random uncertainty . 20
ETSI
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3GPP TR 38.903 version 15.1.0 Release 15 4 ETSI TR 138 903 V15.1.0 (2019-04)
B.2.1.10 Influence of the XPD . 20
B.2.1.11 Insertion loss Variation . 21
B.2.1.12 RF leakage (from measurement antenna to receiver/transmitter) . 21
B.2.1.13 Misalignment of positioning System . 21
B.2.1.14 Uncertainty of the Network Analyzer . 21
B.2.1.15 Uncertainty of the absolute gain of the calibration antenna . 21
B.2.1.16 Positioning and pointing misalignment between the reference antenna and the measurement antenna . 21
B.2.1.17 gNB emulator uncertainty . 21
B.2.1.18 Phase centre offset of calibration . 22
B.2.1.19 Quality of quiet zone for calibration process . 22
B.2.1.20 Standing wave between reference calibration antenna and measurement antenna . 22
B.2.1.21 Influence of the calibration antenna feed cable (Flexing cables, adapters, attenuators, connector
repeatability) . 22
B.2.1.22 Influence of TRP measurement grid . 23
B.2.1.23 Influence of beam peak search grid . 23
B.2.1.24 Systematic error due to TRP calculation/quadrature . 23
B.2.1.25 Multiple measurement antenna uncertainty . 23
B.2.1.26 DUT repositioning . 23
B.2.1.27 Influence of noise . 23
B.2.2 Measurement error contribution descriptions for IFF . 23
B.2.2.1 Positioning misalignment . 23
B.2.2.2 Measure distance uncertainty . 23
B.2.2.3 Quality of Quiet Zone . 24
B.2.2.4 Mismatch . 24
B.2.2.5 Standing wave between DUT and measurement antenna . 24
B.2.2.6 Uncertainty of the RF power measurement equipment . 24
B.2.2.7 Phase Curvature . 24
B.2.2.8 Amplifier Uncertainties . 24
B.2.2.9 Random uncertainty . 24
B.2.2.10 Influence of XPD . 24
B.2.2.11 Insertion Loss Variation . 24
B.2.2.12 RF leakage (from measurement antenna to receiver/transmitter) . 24
B.2.2.13 Misalignment of positioning system . 24
B.2.2.14 Uncertainty of the Network Analyzer . 24
B.2.2.15 Uncertainty of the absolute gain of the calibration antenna . 24
B.2.2.16 Positioning and pointing misalignment between the reference antenna and the measurement antenna . 24
B.2.2.17 gNB emulator uncertainty . 24
B.2.2.18 Phase centre offset of calibration . 25
B.2.2.19 Quality of the Quiet Zone for Calibration Process . 25
B.2.2.20 Standing wave between reference calibration antenna and measurement antenna . 25
B.2.2.21 Influence of the calibration antenna feed cable (Flexing cables, adapters, attenuators, connector
repeatability) . 25
B.2.2.22 Influence of TRP measurement grid . 25
B.2.2.23 Influence of beam peak search grid . 25
B.2.2.24 Systematic error due to TRP calculation/quadrature . 25
B.2.2.25 Multiple measurement antenna uncertainty . 25
B.2.2.26 DUT repositioning . 25
B.2.2.27 Influence of noise . 25
B.2.3 Measurement error contribution descriptions for NFTF. 25
B.2.3.1 Axes Alignment . 25
B.2.3.2 Measurement Distance uncertainty . 25
B.2.3.3 Quality of the Quiet Zone . 26
B.2.3.4 Mismatch . 26
B.2.3.5 Multiple Reflections: Coupling Measurement Antenna and DUT . 26
B.2.3.6 Uncertainty of the RF power measurement equipment . 26
B.2.3.7 Phase curvature . 26
B.2.3.8 Amplifier uncertainties . 26
B.2.3.9 Random uncertainty . 26
B.2.3.10 Influence of the XPD . 26
B.2.3.11 NF to FF truncation. 26
B.2.3.12 Probe Polarization Amplitude and Phase . 26
B.2.3.13 Probe Array Uniformity (for multi-probe systems only) . 26
ETSI
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3GPP TR 38.903 version 15.1.0 Release 15 5 ETSI TR 138 903 V15.1.0 (2019-04)
B.2.3.14 Uncertainty of the Network Analyzer . 26
B.2.3.15 Uncertainty of the absolute gain of the calibration antenna . 27
B.2.3.16 Phase Recovery Non-Linearity over signal bandwidth . 27
B.2.3.17 Probe Pattern Effect . 27
B.2.3.18 Phase centre offset of calibration . 27
B.2.3.19 Quality of the Quiet Zone for Calibration Process . 27
B.2.3.20 Phase Drift and Noise . 27
B.2.3.21 Mismatch in the connection of the calibration antenna. 27
B.2.3.22 Influence of TRP measurement grid . 27
B.2.3.23 . 27
B.2.3.24 . 27
B.2.3.25 Leakage and Crosstalk . 27
B.2.3.26 Systematic error due to TRP calculation/quadrature . 27
B.2.3.27 Multiple measurement antenna uncertainty . 27
B.2.3.28 DUT repositioning . 27
B.2.3.29 Influence of noise . 28
B.3 UE maximum output power . 28
B.3.1 Uncertainty budget format and assessment for DFF . 28
B.3.2 Uncertainty budget format and assessment for IFF . 32
B.3.3 Uncertainty budget format and assessment for NFTF . 38
B.4 to B7 . 39
B.8 Transmit OFF power . 39
B.8.1 Uncertainty budget format and assessment for DFF . 40
B.8.2 Uncertainty budget format and assessment for IFF . 44
B.9 . 49
B.10 Frequency error . 49
B.10.1 Uncertainty budget format and assessment for DFF . 49
B.10.2 Uncertainty budget format and assessment for IFF . 49
B.11 to B.14 . 49
B.15 Occupied bandwidth . 49
B.15.1 Uncertainty budget format and assessment for DFF . 50
B.15.2 Uncertainty budget format and assessment for IFF . 50
B.16 Spectrum emission mask . 50
B.16.1 Uncertainty budget format and assessment for DFF . 51
B.16.2 Uncertainty budget format and assessment for IFF . 55
B.17 Adjacent Channel Leakage Ratio . 61
B.17.1 Uncertainty budget format and assessment for DFF . 62
B.17.2 Uncertainty budget format and assessment for IFF . 66
B.18 Spurious emissions . 72
B.18.1 Uncertainty budget format and assessment for DFF . 73
B.18.2 Uncertainty budget format and assessment for IFF . 77
B.18.3 Uncertainty budget format and assessment for NFTF . 82
B.19 Reference Sensitivity . 82
B.19.1 Uncertainty budget format and assessment for DFF . 82
B.19.2 Uncertainty budget format and assessment for IFF . 82
B.20 to B.24 . 84
B.25 Receiver spurious emissions . 84
B.25.1 Uncertainty budget format and assessment for DFF . 85
B.25.2 Uncertainty budget format and assessment for IFF . 87
Annex C: Acceptable uncertainty of test system for test cases defined in TS 38.521-3 for
radiative testing . 92
ETS
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