ETSI EN 301 842-2 V1.3.1 (2005-04)

SLOVENSKI STANDARD
01-marec-2006
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Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground Data
Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground-based equipment; Part 2: Data link layer
Ta slovenski standard je istoveten z: EN 301 842-2 Version 1.3.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
35.100.20 Podatkovni povezovalni sloj Data link layer
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
VHF air-ground Data Link (VDL) Mode 4 radio equipment;
Technical characteristics and methods of measurement
for ground-based equipment;
Part 2: Data link layer
2 ETSI EN 301 842-2 V1.3.1 (2005-04)

Reference
REN/ERM-TG25-023
Keywords
aeronautical, digital, radio, testing, VHF
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ETSI
3 ETSI EN 301 842-2 V1.3.1 (2005-04)
Contents
Intellectual Property Rights.8
Foreword.8
Introduction .9
1 Scope.10
2 References.11
3 Definitions and abbreviations.12
3.1 Definitions.12
3.1.1 Basic reference model definitions.12
3.1.2 Service conventions definitions .13
3.1.3 General definitions.13
3.2 Abbreviations.16
4 General description of VDL Mode 4 ground station link layer.17
4.1 General.17
4.1.1 Overview of VDL Mode 4.17
4.1.2 Relationship to OSI reference model.18
4.1.3 VDL Mode 4 services .20
4.1.4 ADS-B Function.20
4.1.5 Operational scenarios.21
4.1.6 VDL Mode 4 fundamentals .21
4.1.7 Possible configuration of ground equipment .22
4.1.8 Overall structure of specifications for VDL Mode 4 .22
4.1.9 Equipment performance verification .24
4.2 Ground quarantine.25
4.3 System timing.25
4.4 Net entry.25
4.5 Autotune capability.25
4.6 Autonomous and fixed access .26
5 Minimum performance specification under standard test conditions.26
5.1 MAC sublayer.26
5.1.1 Services.26
5.1.2 MAC sublayer services.26
5.1.3 MAC sublayer parameters .26
5.1.3.1 General.26
5.1.3.2 Parameter M1 (number of slots per superframe).27
5.1.4 Time synchronization.27
5.1.4.1 Primary.27
5.1.4.2 Secondary.27
5.1.4.3 Alignment to UTC second .27
5.1.4.4 Data quality level.27
5.1.5 Slot idle/busy notification.27
5.1.5.1 Slot idle detection.27
5.1.5.2 Slot busy detection .28
5.1.5.3 Slot occupied detection .28
5.1.5.4 Signal level indication.28
5.1.6 Transmission processing.28
5.1.7 Received transmission processing .28
5.2 VSS sublayer.28
5.2.1 Services.28
5.2.1.1 Error detection.28
5.2.1.2 Channel congestion.29
5.2.2 Burst format.29
5.2.2.1 VSS burst structure.29
5.2.2.2 Version number.29
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4 ETSI EN 301 842-2 V1.3.1 (2005-04)
5.2.2.3 Source address.30
5.2.2.4 Message ID.30
5.2.2.5 Information field.30
5.2.2.6 Reservation fields.31
5.2.2.7 Autonomous/directed flag.31
5.2.3 VSS sublayer parameters .32
5.2.3.1 General.32
5.2.3.2 Parameter VS1 (number of ground quarantined slots) .32
5.2.3.3 Parameter VS2 (minimum CCI performance).33
5.2.3.4 Parameter VS4 (quarantine slot re-use range).33
5.2.3.5 Parameter VS5 (maximum burst length).33
5.2.4 VSS quality of service parameters.33
5.2.4.1 General.33
5.2.4.2 Parameter Q1 (priority) .34
5.2.4.3 Parameters Q2a to Q2d (slot selection range constraint for level n) .34
5.2.4.4 Parameter Q3 (replace queued data) .35
5.2.4.5 Parameter Q4 (number of available slots).35
5.2.5 Received transmission processing .35
5.2.6 Reserved access protocol specification.36
5.2.6.1 Reservation table.36
5.2.6.2 Selecting slots for transmission or reservation.36
5.2.6.3 Reserved transmissions.37
5.2.6.4 Reservation conflicts.37
5.2.7 Random access protocol specification .38
5.2.7.1 General.38
5.2.7.2 Random access parameters.38
5.2.7.3 Random access procedures.39
5.2.8 Fixed access protocol specification .40
5.2.8.1 General.40
5.2.8.2 Recommendation.40
5.2.9 Null reservation protocol specification.40
5.2.9.1 Null reservation burst format .40
5.2.10 Periodic broadcast protocol specification .40
5.2.10.1 Periodic broadcast reservation burst format.40
5.2.10.2 Periodic broadcast timers.41
5.2.10.3 Periodic broadcast parameters.41
5.2.10.4 Periodic broadcast reception procedures.42
5.2.10.5 Periodic broadcast transmission procedures.43
5.2.11 Incremental broadcast protocol specification .44
5.2.11.1 Incremental broadcast reservation burst format .44
5.2.11.2 Incremental broadcast parameters.45
5.2.11.3 Incremental broadcast reception procedures .45
5.2.11.4 Incremental broadcast transmission procedures.46
5.2.12 Combined periodic broadcast and incremental broadcast protocol specification .46
5.2.12.1 Combined periodic broadcast and incremental broadcast reservation burst.46
5.2.13 Big negative dither (BND) broadcast protocol specifications .47
5.2.13.1 BND reservation burst format.47
5.2.13.2 BND broadcast parameters.47
5.2.13.3 BND broadcast reception procedures.47
5.2.14 Unicast request protocol specification .47
5.2.14.1 Unicast request reservation burst format.47
5.2.14.2 Unicast request reception procedures.48
5.2.14.3 Slot selection criteria for unicast request with sdf = 1 .49
5.2.15 Information transfer request protocol specification .49
5.2.15.1 Information transfer request reservation burst format.49
5.2.15.2 Information transfer request reception procedures.50
5.2.16 Directed request protocol specification.50
5.2.16.1 Directed request reservation burst format .50
5.2.16.2 Directed request parameters.54
5.2.16.3 Directed request reception procedures .54
5.2.16.4 Directed request transmission procedures.56
5.2.17 Block reservation protocols specification.57
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5 ETSI EN 301 842-2 V1.3.1 (2005-04)
5.2.17.1 Superframe block reservation burst format .57
5.2.17.2 Second frame block reservation burst format.58
5.2.17.3 Superframe block reservation parameters .58
5.2.17.4 Superframe block reservation reception procedures .59
5.2.17.5 Second frame block reservation parameters.59
5.2.17.6 Second frame block reservation reception procedures.60
5.2.17.7 Superframe block reservation transmission procedures .61
5.2.17.8 Second frame block reservation transmission procedures.61
5.2.18 Response protocol specification .62
5.2.18.1 Response burst format.62
5.2.19 General request protocol specification.62
5.2.19.1 General request burst format.62
5.2.19.2 General request procedures .63
5.2.20 General response protocol specification .63
5.2.20.1 General response burst format.63
5.2.20.2 General response procedures.64
5.3 DLS sublayer.65
5.3.1 Services.65
5.3.1.1 General.65
5.3.1.2 Data transfer.65
5.3.1.3 Station address encoding.65
5.3.1.4 DLS burst formats.66
5.3.2 DLS system parameters.67
5.3.2.1 Parameter ND4 (maximum length of a UDATA burst) .68
5.3.3 DLS procedures.68
5.3.3.1 Broadcast.68
5.3.3.2 DLS not supported.68
5.3.3.3 User data packet reception .68
5.4 Link Management Entity sublayer .68
5.4.1 Services.68
5.4.2 Synchronization burst format.68
5.4.2.1 General.68
5.4.2.2 Fixed and variable data fields.69
5.4.2.3 Fixed data field format .69
5.4.2.4 Variable data field format .72
5.4.2.5 Synchronization burst request .72
5.4.2.6 Link management burst.72
5.4.3 Control (CTRL) parameter formats .73
5.4.3.1 Encoding.73
5.4.3.2 VDL Mode 4 parameter identification .73
5.4.3.3 Ground-initiated modification parameters .74
5.4.3.4 Ground-initiated information parameters.75
5.4.4 LME procedures.78
5.4.4.1 Synchronization burst procedures .78
5.4.4.2 Peer entity contact table (PECT).79
5.4.4.3 Network entry protocol specifications .80
5.4.5 Additional material for ADS-B applications .81
5.4.5.1 Information field formats.81
5.4.5.2 ADS-B request format.81
5.5 Additional requirements for ground stations .81
5.5.1 System timing requirements .81
5.5.1.1 Maintenance of Primary time.81
5.5.2 Ground station interface requirements.82
5.5.2.1 Ground station coordination.82
5.5.2.2 Network timing requirements.82
5.5.2.3 Application interface requirements .82
5.5.2.4 Transmission control requirements .82
5.5.2.5 Superframe block reservation rebroadcast procedures.83
5.5.2.6 Fixed transmission parameters .83
5.5.2.7 Protection of fixed access protocol transmissions by ground quarantine.83
5.5.2.8 Protection of fixed access protocol transmissions by use of appropriate reservation protocols.83
5.5.2.9 Restriction of autotune reservations.84
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6 ETSI EN 301 842-2 V1.3.1 (2005-04)
5.5.2.10 Transmission time for autotune reservations.84
5.5.2.11 Reporting of channel usage.84
5.6 Definitions for compact position reporting .84
5.6.1 Introduction.84
5.6.2 Parameter symbols, data types, constants and variables .84
5.6.2.1 Parameter symbols.84
5.6.2.2 Data types.85
5.6.2.3 Constants.85
5.6.2.4 Variables.85
5.6.2.5 Functions.86
5.6.2.6 Patch constants.87
5.6.3 Fixed data field position encoding.89
5.6.3.1 General.89
5.6.3.2 Input parameters.89
5.6.3.3 Calculations.89
5.6.4 Fixed data field position local decoding .89
5.6.4.1 General.89
5.6.4.2 Input parameters.90
5.6.4.3 Calculations.90
5.6.5 Fixed data field position global decoding.91
5.6.5.1 General.91
5.6.5.2 Input parameters.91
5.6.5.3 Transition level straddling.91
5.6.5.4 Calculations.92
5.6.6 Position report processing.92
5.6.6.1 Services.92
5.6.6.2 Position report parameters.92
5.6.6.3 Position report processing procedures.93
6 General design requirements.95
6.1 Controls and indicators.95
6.2 Operation of controls.95
6.3 Warm up.95
6.4 Effects of tests .95
6.5 Software management.96
6.6 Recovery from failure .96
6.6.1 Failure of the VDL equipment.96
6.7 Monitoring of proper operation .96
7 Protocol test procedures.96
7.1 General.96
7.1.1 Input voltage.96
7.1.2 Power input frequency.96
7.1.3 Adjustment of equipment.97
7.1.4 Equipment configuration.97
7.1.5 Test equipment.97
7.1.6 Test equipment precautions .97
7.1.7 Ambient conditions.97
7.1.8 Connected loads.97
7.1.9 Warm-up period.97
7.2 Required test rig .97
7.3 Protocol test-suite description methodology .100
7.4 Detailed protocol test procedures .100
7.4.1 Test-suite overview.100
7.4.2 Declarations.104
7.4.3 Constraints.105
7.4.3.1 Abbreviations.105
7.4.3.1.1 Subfield mnemonics.105
7.4.3.1.2 Special characters used in the subfield definitions .106
7.4.3.1.3 Station addresses and positions .106
7.4.3.1.4 Tables of values for use in CPR test cases .108
7.4.3.1.5 Tables of values for use in content checking test cases .118
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7.4.3.1.6 VDL4 burst formats.121
7.4.3.2 Test cases.138
7.4.3.2.1 Test case macros.139
7.4.3.2.2 Test case descriptions .141
Annex A (informative): Cross reference matrix .307
Annex B (informative): Description of ISO/IEC 9646 Test Methodology.322
B.1 Overview of the structure of the ISO/IEC 9646 Test-Suites.322
B.2 Test case description.322
B.3 Queue action.324
B.4 Repeat construct.324
B.5 Macro definitions.325
B.6 Test case naming.325
Annex C (informative): Bibliography.326
History .331

ETSI
8 ETSI EN 301 842-2 V1.3.1 (2005-04)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document is part 2 of a multi-part deliverable covering the VHF air-ground Data Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for ground-based equipment, as identified below:
Part 1: "General description and physical layer";
Part 2: "Data link layer";
Part 3: "Additional broadcast aspects";
Part 4: "Point-to-point functions".
The present document is accompanied by an equivalent airborne standard, EN 302 842 Parts 1 to 4, covering the VHF
air-ground Data Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for
airborne equipment.
National transposition dates
Date of adoption of this EN: 6 August 2004
Date of latest announcement of this EN (doa): 30 November 2004
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 May 2005
Date of withdrawal of any conflicting National Standard (dow): 31 May 2005

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