ETSI TR 103 704 V1.1.1 (2022-05)

Urban Rail ITS and Road ITS applications in the 5,9 GHz band; Measurement campaign to confirm simulation parameters to define Urban Rail ITS protected zones in 5 915 MHz to 5 925 MHz

DTR/RT-JTFIR-4

General Information

• Status: Not Published
• Technical Committee: RT JTFIR - Joint Task Force ITS RT
• Current Stage: 12 - Completion
• Due Date: 30-May-2022
• Completion Date: 30-May-2022

Standards Content (Sample)

ETSI TR 103 704 V1.1.1 (2022-05)






TECHNICAL REPORT
Urban Rail ITS and Road ITS applications in the 5,9 GHz band;
Measurement campaign to confirm simulation parameters
to define Urban Rail ITS protected zones
in 5 915 MHz to 5 925 MHz

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2 ETSI TR 103 704 V1.1.1 (2022-05)

Reference
DTR/RT-JTFIR-4
Keywords
ITS, simulation, spectrum

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3 ETSI TR 103 704 V1.1.1 (2022-05)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Executive summary . 6
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Measurement campaign context and organization . 10
4.1 General . 10
4.2 Available results and studies . 11
5 Critical interference scenarios . 12
5.1 Description of critical interference scenarios . 12
5.1.1 Introduction. 12
5.1.2 Road parallel to Urban Rail tracks . 12
5.1.3 Road crossing Rail tracks . 14
5.1.4 Isles (group of vehicles) in a city or multiple RF sources . 15
5.2 Summary . 15
6 Identification of the relevant areas to conduct the measurements . 16
6.1 Overview . 16
6.2 List of Identified relevant areas to conduct measurements . 16
6.3 Description of each selected relevant areas . 17
6.3.1 Selected relevant areas of RATP Line 6 . 17
6.3.1.0 Description of the sections of RATP Line 6 . 17
6.3.1.1 Description of the section 1 of RATP Line 6 . 17
6.3.1.2 Description of the section 2 of RATP Line 6 . 18
6.3.1.3 Description of the section 3 of RATP Line 6 . 19
6.3.2 Selected relevant areas of RATP Line 8 . 21
6.3.2.1 Description of the sections of RATP Line 8 . 21
6.3.2.2 Description of the section 1 of RATP Line 8 . 21
6.3.2.3 Description of the section 2 of RATP Line 8 . 22
6.3.2.4 Description of the section 3 of RATP Line 8 . 23
6.4 Specific requirements to conduct the measurements . 24
7 Description of measurement procedures and measurement tools for each case . 25
7.1 Overview . 25
7.2 General test set-up . 25
7.2.1 High level description of the test set-up. 25
7.2.2 Requirements for the RF measurement tool . 26
7.3 Description of test set-up and RF measurement tool . 28
7.4 Measurement procedures . 31
7.5 Implementation of the Measurements campaign . 33
7.5.1 Implementation process . 33
7.5.2 Definition of Planning for measurements . 33
7.5.3 Preparation of the RF measurements tools . 34
7.5.3.1 Preparation of the RF measurements tool for vehicles . 34
7.5.3.2 Preparation of the RF measurements tool for train . 34
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4 ETSI TR 103 704 V1.1.1 (2022-05)
7.5.3.3 Preparation of the RF measurements tool for the base stations . 34
7.5.4 Measurement set-up as implemented and onsite parameters . 35
8 Measurement results analysis . 37
8.1 Method of analysis . 37
8.1.1 General approach . 37
8.1.2 Reference interfaces . 38
8.2 Presentation of results per relevant area . 38
8.2.1 Mode of presentation . 38
8.2.2 Analysis of measurements for Line 6 . 39
8.2.2.1 Analysis of measurements for the section 1 of Line 6 . 39
8.2.2.1.1 Localization of the receivers for section 1 of Line 6 . 39
8.2.2.1.2 Analysis of measurements for each receiver of section 1 . 40
8.2.2.1.3 Summary of observation for the section 1 of Line 6 . 46
8.2.2.2 Analysis of measurements for the section 2 of Line 6 . 46
8.2.2.2.1 Localization of the receivers for section 2 of Line 6 . 46
8.2.2.2.2 Analysis of measurements for each receiver of section 2 . 48
8.2.2.2.3 Measurements with train in the tunnel . 51
8.2.2.2.4 Summary of observation for the section 2 of Line 6 . 56
8.2.2.3 Analysis of measurements for the section 3 of Line 6 . 56
8.2.2.3.1 Localization of the receivers for section 3 of Line 6 . 56
8.2.2.3.2 Analysis of measurements for each receiver of section 3 . 57
8.2.2.3.3 Summary of observation for the section 2 of Line 6 . 62
8.2.3 Analysis of measurements for Line 8 . 63
8.2.3.1 Analysis of the Measurements for the section 1 of Line 8 . 63
8.2.3.1.1 Localization of the receivers for section 1 of Line 8 . 63
8.2.3.1.2 Analysis of measurements for each receiver of section 1 . 64
8.2.3.1.3 Summary L8 section 1 . 68
8.2.3.2 Analysis of measurements for the section 2 of Line 8 . 68
8.2.3.2.1 Localization of the receivers for section 2 of Line 8 . 68
8.2.3.2.2 Analysis of measurements for each receiver of section 2 . 71
8.2.3.2.3 Summary L8 section 2-3. 84
8.2.4 Measurement results summary . 84
8.3 Detailed analysis for some scenarios . 85
8.3.1 Detailed measurements on parallel roads and perpendicular roads . 85
8.3.1.1 Description of the scenarios . 85
8.3.1.2 Description of data processing method . 85
8.3.1.3 Selected Scenarios for Line 8 - Suburban environment . 86
8.3.1.3.0 Introduction . 86
8.3.1.3.1 Train rear cab at position 1 on Line 8 section 2-3 . 86
8.3.1.3.2 Train front cab at position 3 on Line 8 section 2-3 measurements with vehicle 1 . 87
8.3.1.3.3 Train front cab at position 3 on Line 8 section 2-3 measurements with vehicle 2 . 88
8.3.1.3.4 Train front cab at position 4 on Line 8 section 2-3 . 88
8.3.1.3.5 Base station at position 1 on Line 8 section 2-3 . 89
8.3.1.3.6 Base station at position 3 on Line 8 section 2-3 . 90
8.3.1.4 Selected Scenarios for Line 6 - Urban environment . 91
8.3.1.4.0 Introduction . 91
8.3.1.4.1 Base station configured as train at position 1 on Line 6 section 1 . 91
8.3.1.4.2 Base station configured as train at position 3 on Line 6 section 1 . 92
8.3.1.4.3 Base station configured as train at position 2 on Line 6 section 2 measurements with vehicle
1 . 93
8.3.1.4.4 Base station configured as train at position 2 on Line 6 section 1 measurement with vehicle
2 . 94
8.3.1.4.5 Base station configured as train at position 2 on Line 6 section 2 focus on perpendicular
road . 95
8.3.1.4.6 Base station at position 2 on Line 6 section 2. 96
8.3.1.4.7 Base station at position 1 on Line 6 section 2. 97
8.3.1.5 Selected Scenarios for Line 6 section 3 - Bercy Bridge . 98
8.3.1.5.0 Introduction . 98
8.3.1.5.1 Base station configured as train at position 1 on Line 6 section 3 (Bercy Bridge)
measurements with vehicle 1 . 98
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5 ETSI TR 103 704 V1.1.1 (2022-05)
8.3.1.5.2 Base station configured as train at position 1 on Line 6 section 3 (Bercy Bridge)
measurements with vehicle 2 . 99
8.3.1.5.3 Base station at position 2 on Line 6 section 3 (Bercy bridge) . 100
8.3.1.5.4 Base station at position 2 on Line 6 section 3 (Bercy bridge) . 101
8.3.1.6 Overall received levels versus distance . 102
8.3.2 Effect of antenna directivity. 105
8.4 Comparison of measurements with simulations for some base stations and trains . 107
8.4.1 Propagation simulator . 107
8.4.2 Analysis of the results of comparison . 108
8.4.3 Points simulated all along the tracks . 115
8.4.4 Comparison between 3,2 m and 2,5 m vehicles antenna heights . 116
8.4.5 Summary of the comparison between the measurements and simulations . 118
8.5 Statistical analysis . 118
8.5.1 Ranges of levels received from vehicles . 118
8.5.2 Comparison between the two vehicles' antenna heights . 126
8.5.3 Comparison between base stations and train receivers . 129
8.5.4 Summary of statistical analysis . 130
9 Conclusion and proposal . 130
Annex A: List of test equipment . 132
A.1 Detailed description of the RF measurement tool . 132
A.2 Antenna for CBTC Base station and train . 132
A.3 Choice vehicle roof-top antenna for measurements . 133
A.3.1 Introduction . 133
A.3.2 Choice of Antenna . 136
A.3.3 Choice of Antenna height above the roof . 137
A.4 Antenna reference measurements . 140
A.4.1 Introduction . 140
A.4.2 Scope of the measurements . 140
A.4.3 Measurement setup . 141
A.4.4 Conclusion . 149
A.4.5 List of equipment used in the measurements . 149
A.5 GNSS . 149
A.5.1 Introduction . 149
A.5.1.1 Scope . 149
A.5.1.2 Document Structure . 149
A.5.1.3 Background . 149
A.5.2 GNSS Overview . 150
A.5.2.1 Definitions . 150
A.5.2.2 Type of correction for high accuracy positioning . 150
A.5.3 Implementation . 151
A.5.3.1 Equipment . 151
Annex B: Simple Urban rail and Suburban rail propagation models . 157
Annex C: Desensitization maps . 158
C.1 Introduction . 158
C.2 Desensitization maps for Line 6 . 159
C.3 Desensitization maps for Line 8 . 164
Annex D: Description of the propagation simulator tool . 173
Annex E: Reading the box plots. 175
Annex F: Bibliography . 176
History . 177
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6 ETSI TR 103 704 V1.1.1 (2022-05)
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Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Railway Telecommunications (RT).
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.
Executive summary
ETSI TR 103 580 [i.2] described possible sharing and interference mitigation techniques between Road ITS and Urban
Rail ITS. These techniques would allow the technical implementation of the regulatory priority regime afforded to
Urban Rail ITS in the spectrum band 5 915 MHz to 5 925 MHz.
ETSI TR 103 580 [i.2] concluded that a measurement campaign would be needed to validate the results and the
simulations parameters applicable for the definition of the protected zones, where mitigation techniques would be
required.
The present document describes the work undertaken to perform the required measurements and analyses the resulting
data. The following items are covered:
• Identification of relevant test cases representative of typical coexistence situations.
ETSI

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7 ETSI TR 103 704 V1.1.1 (2022-05)
• Identification of relevant areas
...