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TECHNICAL REPORT
Universal Mobile Telecommunications System (UMTS);
Measurements of radio performances
for UMTS terminals in speech mode
(3GPP TR 25.914 version 15.0.1 Release 15)
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3GPP TR 25.914 version 15.0.1 Release 15 1 ETSI TR 125 914 V15.0.1 (2018-09)
Reference
RTR/TSGR-0425914vf01
Keywords
UMTS
ETSI
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3GPP TR 25.914 version 15.0.1 Release 15 2 ETSI TR 125 914 V15.0.1 (2018-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
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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
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
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 25.914 version 15.0.1 Release 15 3 ETSI TR 125 914 V15.0.1 (2018-09)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Symbols and Abbreviations. 12
3.1 Symbols . 12
3.2 Abbreviations . 12
4 Introduction . 13
4.1 Scope . 13
4.2 Future exte nsio ns . 14
5 Initial Conditions . 14
5.1 Phantom specifications . 14
5.1.1 Head phantom . 14
5.1.2 DUT Positioning on head phantom . 15
5.1.3 Laptop Ground Plane Phantom . 16
5.1.4 DUT Positioning on Laptop Ground Plane Phantom . 17
5.1.5 Hand Phantoms . 18
5.1.5.1 Dimensions. 18
5.1.5.2 Dielectric properties . 19
5.1.5.3 Hand phantom grips . 20
5.1.5.4 Mechanical Requirements of Hand Phantoms . 22
5.1.6 DUT positioning for speech mode . 23
5.1.6.1 Mono-blocks and closed sliders . 23
5.1.6.2 Folds and open-slides . 24
5.1.6.3 PDA. 25
5.1.7 DUT positioning for browsing mode . 26
5.1.7.1 Narrow DUT . 26
5.1.7.2 PDA. 27
5.2 Anechoic chamber constraints . 27
5.2.1 Quiet zone dimension . 28
5.2.2 Minimum distance between the DUT and the measurement antenna . 28
5.2.3 Reflectivity of the quiet zone . 28
5.2.4 Shielding effectiveness of the chamber . 28
5.3 Embedded Devices . 28
5.3.1 Notebook . 28
5.3.2 Tablet . 29
6 Measurement parameters . 30
6.1 Definition of the Total Radiated Power (TRP) . 30
6.2 Definition of the Mean Effective Gain (MEG). 30
6.3 Power angular models and channel XPR . 31
6.4 Definition of Mean Effective Radiated Power (MERP) . 33
6.5 Definition of Total Radiated Sensitivity (TRS) . 33
6.6 Definition of Mean Effective Radiated Sensitivity (MERS) . 33
6.7 Sampling grid . 33
6.8 Measurement frequencies . 34
7 Measurement procedure – transmitter performance . 34
7.1 General measurement arrangements . 34
7.2 Procedure for spherical scanning ranges . 34
7.3 Calibration measurement . 36
7.3 Reference antennas . 38
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8 Measurement procedure – receiver performance . 39
8.1 General measurement arrangements . 40
8.2 Procedure for spherical scanning ranges . 40
8.3 Calibration measurement . 40
9 Radiated power and sensitivity measurement techniques in UMTS system . 40
9.1 Technical background information . 41
9.1.1 The common test setup for TRP and TRS testing . 41
9.2 TRP measurement . 41
9.3 TRS measurement . 42
9.4 Calibration of absolute levels . 43
Annex A (informative): Estimation of measurement uncertainty . 44
A.1 Mismatch uncertainty between measurement receiver and the probe antenna . 50
A.1.1 Total combined mismatch uncertainty calculations. 50
A.1.1.1 Mismatch uncertainty through the connector between two elements: . 50
A.1.1.2 Mismatch uncertainty due to the interaction of several elements: . 51
A.1.2 Total combined mismatch uncertainty: . 52
A.2 Mismatch uncertainty of the RF relay . 53
A.2.1 First part: RF Relay switched on the co-polarized signal . 53
A.2.1.1 The mismatch through the connector between two elements . 53
A.2.1.2 Mismatch due to the interaction between two elements or more . 54
A.2.2 Second part: RF relay switched on the cross-polarized signal . 54
A.2.2.1 The mismatch through the connector between two elements . 54
A.2.2.2 Mismatch due to the interaction between two elements or more . 54
A.2.3 Total combined mismatch uncertainty: . 55
A.3 Insertion loss of the probe antenna cable . 55
A.4 Insertion loss of the probe antenna attenuator (if used) . 55
A.5 Insertion loss of the RF relays (if used). 55
A.6 Influence of the antenna cable . 56
A.6.1 Probe antenna cable . 56
A.6.2 Calibration antenna cable . 56
A.7 Absolute gain of the probe antenna . 56
A.8 Measurement receiver: uncertainty of absolute level . 56
A.9 Measurement distance . 56
A.9.1 Offset of DUT phase centre from axis(es) of rotation . 56
A.9.2 Mutual coupling . 57
A.9.3 Phase curvature . 57
A.10 Quality of quiet zone . 57
A.11 Tx-power drift of DUT . 57
A.12 Uncertainty related to the use of phantoms . 58
A.12.1 Uncertainty from using different types of SAM phantom . 58
A.12.2 Simulated tissue liquid uncertainty . 58
A.12.3 Uncertainty of dielectric properties and shape of the hand phantom . 58
A.12.4 Uncertainty from using different types of Laptop Ground Plane phantom . 59
A.13 Coarse sampling grid . 60
A.14 Random uncertainty . 61
A.15 Uncertainty of network analyzer . 62
A.16 Uncertainty of the gain/efficiency of the calibration antenna . 62
A.17 Base station simulator: uncertainty of the absolute level . 62
A.18 BER measurement: output level step resolution . 62
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A.19 Statistical uncertainty of the BER measurement . 62
A.20 BER data rate normalization uncertainty . 63
A.21 DUT sensitivity drift . 63
A.22 Cable loss measurement uncertainty . 63
A.23 Signal generator: uncertainty of the absolute output level . 64
A.24 Signal generator: output level stability . 64
A.25 Insertion loss: calibration antenna feed cable . 64
A.26 Insertion loss: calibration antenna attenuator (if used) . 64
A.27 Chamber Statistical Ripple and Repeatability . 64
A.28 Additional Power Loss in EUT Chassis . 65
A.29 Void . 79
A.29.1 Void . 79
Annex B (informative): Suggested recipes of liquid to be used inside SAM phantom . 80
Annex C (informative): System Parameters . 81
C.1 Definition and applicability . 81
C.2 Establishing the connection . 81
C.2.1 Required parameters to initiate the communication - basic concepts . 81
C.2.1.1 Conversational RAB . 81
C.2.1.2 Logical, transport, and physical channels in UMTS . 81
C.2.1.3 Dedicated physical channel. 81
C.2.2 Recall on the reference measurement channel (reference to the standard paragraph) . 81
C.2.3 Uplink 12.kbps reference measurement channel ([60], annex C, § C.2.1) . 82
C.2.4 Downlink 12.2 kbps reference measurement channel ([60], annex C, § C.3.1) . 82
Annex D (informative): Radiated power and sensitivity measurement techniques in 2G
systems . 83
D.1 Introduction . 83
D.1.1 Scope . 83
D.1.2 References . 83
D.1.3 Definitions, symbols and abbreviations. 83
D.1.3.1 Definitions . 83
D.1.3.2 Symbols . 83
D.1.3.3 Abbreviations . 83
D.2 Initial conditions . 83
D.2.1 Phantom specifications . 83
D.2.2 Anechoic chamber constraints . 83
D.2.3 General arrangement . 83
D.2.3.1 Free space . 84
D.2.3.2 With SAM head phantom . 84
D.2.3.3 Test-bed setup . 85
D.3 Measurement parameters . 85
D.3.1 Definition of the TRP parameter . 85
D.3.2 Definition of the MEG parameter . 85
D.3.3 Definition of the MERP parameter . 85
D.3.4 Definition of the TRS parameter . 85
D.3.5 Definition of the MERS parameter . 85
D.4 Sampling grid . 85
D.5 Measurement frequencies . 85
D.6 Output power measurement . 86
ETSI
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3GPP TR 25.914 version 15.0.1 Release 15 6 ETSI TR 125 914 V15.0.1 (2018-09)
D.6.1 TRP . 86
D.6.2 TRS . 86
D.7 Measurement procedure – transmitter performance . 86
D.7.1 Transmitter performance measurement . 86
D.7.1.1 Spherical scanning ranges . 86
D.7.2 Reference position . 86
D.7.3 General measurement arrangements . 86
D.7.3.1 TRP . 86
D.7.3.2 TRS . 87
D.7.4 Calibration measurement . 88
D.8 Measurement uncertainty and corrections in 2G system measurements . 88
Annex E (informative): Alternative measurement tec
...