EN 62287-1:2017

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Maritime navigation and radiocommunication equipment and systems - Class B
shipborne equipment of the automatic identification system (AIS) - Part 1: Carrier-sense
time division multiple access (CSTDMA) techniques (IEC 62287-1:2017)
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt -
Geräte der Klasse B des automatischen Identifikationssystems (AIS) für Schiffe - Teil 1:
Zeitmultiplex-Vielfachzugriffstechniken mit Aktivitätserkennung (CSTDMA) (IEC 62287-
1:2017)
Matériels et systèmes de navigation et de radiocommunications maritimes -
Transpondeur embarqué du système d'identification automatique (AIS) de classe B -
Partie 1: Technique d'accès multiple par répartition dans le temps avec écoute de
porteuse (CSTDMA) (IEC 62287-1:2017)
Ta slovenski standard je istoveten z: EN 62287-1:2017
ICS:
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62287-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2017
ICS 47.020.70 Supersedes EN 62287-1:2011
English Version
Maritime navigation and radiocommunication equipment and
systems - Class B shipborne equipment of the automatic
identification system (AIS) - Part 1: Carrier-sense time division
multiple access (CSTDMA) techniques
(IEC 62287-1:2017)
Matériels et systèmes de navigation et de Navigations- und Funkkommunikationsgeräte und systeme
radiocommunications maritimes - Transpondeur embarqué für die Seeschifffahrt - Geräte der Klasse B des
du système d'identification automatique (AIS) de classe B - automatischen Identifikationssystems (AIS) für Schiffe -
Partie 1: Technique d'accès multiple par répartition dans le Teil 1: Zeitmultiplex-Vielfachzugriffstechniken mit
temps avec écoute de porteuse (CSTDMA) Aktivitätserkennung (CSTDMA)
(IEC 62287-1:2017) (IEC 62287-1:2017)
This European Standard was approved by CENELEC on 2017-05-10. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62287-1:2017 E
European foreword
The text of document 80/837/FDIS, future edition 3 of IEC 62287-1, prepared by IEC/TC 80 "Maritime
navigation and radiocommunication equipment and systems" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 62287-1:2017.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2018-02-10
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2020-05-10
the document have to be withdrawn

This document supersedes EN 62287-1:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62287-1:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61162-450 NOTE Harmonized as EN 61162-450.
ISO 9000 NOTE Harmonized as EN ISO 9000.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60945 2002 Maritime navigation and EN 60945 2002
radiocommunication equipment and
systems - General requirements -
Methods of testing and required test
results
IEC 61108 series Maritime navigation and EN 61108 series
radiocommunication equipment and
systems - Global navigation satellite
systems (GNSS)
IEC 61162-1 -  Maritime navigation and EN 61162-1 -
radiocommunication equipment and
systems - Digital interfaces - Part 1:
Single talker and multiple listeners
IEC 61993-2 -  Maritime navigation and EN 61993-2 -
radiocommunication equipment and
systems - Automatic Identification
Systems (AIS) - Part 2: Class A
shipborne equipment of the automatic
identification system (AIS) - Operational
and performance requirements,
methods of test and required test results
IEC 62320-1 -  Maritime navigation and EN 62320-1 -
radiocommunication equipment and
systems - Automatic identification
system (AIS) - Part 1: AIS Base
Stations - Minimum operational and
performance requirements, methods of
testing and required test results
ITU-R -  Digital selective-calling system for use in - -
Recommendation the maritime mobile service
M.493
Publication Year Title EN/HD Year
ITU-R 1998 Characteristics of a transponder system - -
Recommendation using digital selective calling techniques
M.825-3 for use with vessel traffic services and
ship-to-ship identification
ITU-R 2012 Interim solutions for improved efficiency - -
Recommendation in the use of the band 156-174 MHz by
M.1084-5 stations in the maritime mobile service
ITU-R 2014 Technical characteristics for an - -
Recommendation automatic identification system using
M.1371-5 time-division multiple access in the VHF
maritime mobile band
ITU Radio 2012 Radio Regulations - -
Regulations
IEC 62287-1 ®
Edition 3.0 2017-04
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems – Class B

shipborne equipment of the automatic identification system (AIS) –

Part 1: Carrier-sense time division multiple access (CSTDMA) techniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-4152-3

– 2 – IEC 62287-1:2017  IEC 2017
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and abbreviated terms . 12
3.1 Terms and definitions . 12
3.2 Abbreviated terms . 12
4 General requirements . 13
4.1 General . 13
4.1.1 Capabilities of the Class B "CS" AIS . 13
4.1.2 Quality assurance . 13
4.1.3 Safety of operation . 14
4.1.4 Additional features . 14
4.1.5 Modes of operation . 14
4.2 Manuals . 15
4.3 Marking and identification . 15
5 Environmental, power supply, interference and safety requirements . 15
6 Performance requirements. 16
6.1 Composition . 16
6.2 Operating frequency channels . 16
6.3 GNSS receiver for position reporting . 16
6.4 Identification . 17
6.5 AIS information . 17
6.5.1 Information content . 17
6.5.2 Information reporting intervals . 18
6.5.3 Permissible initialisation period . 18
6.6 Alarms and indications, fall-back arrangements . 18
6.6.1 Integrity and protection . 18
6.6.2 Transmitter shutdown procedure . 19
6.6.3 Position sensor fallback conditions . 19
6.6.4 SOG/COG sensor fallback conditions . 20
6.7 User interface . 20
6.7.1 Indicators and display . 20
6.7.2 Static data input . 20
6.7.3 External interfaces . 20
6.8 Protection from invalid control commands . 21
7 Technical requirements . 21
7.1 General . 21
7.2 Physical layer . 22
7.2.1 General . 22
7.2.2 Transceiver characteristics . 22
7.2.3 Transmitter requirements . 24
7.2.4 Receiver requirements . 24
7.3 Link layer . 25
7.3.1 General . 25

IEC 62287-1:2017  IEC 2017 – 3 –
7.3.2 Link sublayer 1: Medium access control (MAC) . 25
7.3.3 Link sublayer 2: Data Link Service (DLS) . 28
7.3.4 Link sublayer 3: Link management entity (LME) . 33
7.4 Network layer . 41
7.4.1 General . 41
7.4.2 Dual channel operation . 41
7.4.3 Channel management . 42
7.4.4 Distribution of transmission packets . 42
7.4.5 Data link congestion resolution . 42
7.5 Transport layer . 42
7.5.1 General . 42
7.5.2 Transmission packets . 43
7.5.3 Sequencing of data packets . 43
7.6 Digital selective calling (DSC) . 43
8 Test conditions . 43
8.1 General . 43
8.2 Normal and extreme test conditions . 43
8.2.1 Normal test conditions . 43
8.2.2 Extreme test conditions . 43
8.3 Test signals . 43
8.3.1 Standard test signal number 1 . 44
8.3.2 Standard test signal number 2 . 44
8.3.3 Standard test signal number 3 . 44
8.3.4 Standard test signal number 4 . 44
8.3.5 Standard test signal number 5 . 44
8.4 Test arrangements . 45
8.4.1 Standard test environment . 45
8.4.2 Modes of operation of the transmitter. 46
8.4.3 Common test conditions for protection from invalid controls . 46
8.4.4 Measurement uncertainties . 46
9 Power supply, environmental and EMC tests . 47
9.1 Test summary . 47
9.2 Vibration/shock . 49
9.2.1 Vibration . 49
9.2.2 Shock . 49
9.3 Performance tests/checks . 49
9.4 Undervoltage test (brown out) . 50
9.4.1 Purpose . 50
9.4.2 Method of test. 50
9.4.3 Required result . 50
10 Operational tests . 50
10.1 General . 50
10.1.1 Quality assurance . 50
10.1.2 Safety of operation . 50
10.1.3 Additional features . 50
10.2 Modes of operation . 51
10.2.1 Autonomous mode . 51
10.2.2 Assigned mode . 52
10.2.3 Polled mode/interrogation response . 53

– 4 – IEC 62287-1:2017  IEC 2017
10.3 Messages extending one time period . 54
10.3.1 Method of measurement . 54
10.3.2 Required results . 54
10.4 Channel selection . 54
10.4.1 Valid channels . 54
10.4.2 Invalid channels . 54
10.5 Internal GNSS receiver . 54
10.6 AIS information . 55
10.6.1 Information content . 55
10.6.2 Information update rates . 56
10.7 Initialisation period . 57
10.7.1 Method of measurement . 57
10.7.2 Required results . 57
10.8 Alarms and indications, fall-back arrangements . 57
10.8.1 Built-in integrity test . 57
10.8.2 Transceiver protection . 58
10.8.3 Transmitter shutdown procedure . 58
10.8.4 Position sensor fallback conditions . 58
10.8.5 Speed sensors . 59
10.9 User interface . 59
10.9.1 Display . 59
10.9.2 Message display . 59
10.9.3 Static data input . 60
10.9.4 External interfaces . 60
11 Physical tests . 60
11.1 TDMA transmitter . 60
11.1.1 Frequency error . 60
11.1.2 Carrier power . 61
11.1.3 Transmission spectrum . 61
11.1.4 Modulation accuracy . 62
11.1.5 Transmitter output power versus time function . 63
11.2 TDMA receivers . 64
11.2.1 Sensitivity . 64
11.2.2 Error behaviour at high input levels. 65
11.2.3 Co-channel rejection . 65
11.2.4 Adjacent channel selectivity . 66
11.2.5 Spurious response rejection . 67
11.2.6 Intermodulation response rejection . 69
11.2.7 Blocking or desensitisation . 70
11.3 Conducted spurious emissions . 71
11.3.1 Spurious emissions from the receiver . 71
11.3.2 Spurious emissions from the transmitter . 72
12 Specific tests of link layer . 72
12.1 TDMA synchronisation . 72
12.1.1 Synchronisation test sync mode 1 . 72
12.1.2 Synchronisation test sync mode 2 . 73
12.1.3 Synchronisation test with UTC . 74
12.2 Carrier-sense tests . 74
12.2.1 Threshold level . 74

IEC 62287-1:2017  IEC 2017 – 5 –
12.2.2 Carrier-sense timing . 75
12.3 VDL state/reservations . 76
12.3.1 Method of measurement . 76
12.3.2 Required results . 76
12.4 Data encoding (bit stuffing) . 76
12.4.1 Method of measurement . 76
12.4.2 Required results . 76
12.5 Frame check sequence . 76
12.5.1 Method of measurement . 76
12.5.2 Required results . 76
12.6 Slot allocation (channel access protocol) . 77
12.6.1 Autonomous mode allocation . 77
12.6.2 DSC listening periods . 77
12.7 Assigned operation . 77
12.7.1 Assignment priority . 77
12.7.2 Entering rate assignment . 78
12.7.3 Reverting from rate assignment . 78
12.7.4 Reverting from quiet mode . 78
12.7.5 Retry of interrogation response . 78
12.8 Message formats . 79
12.8.1 Received messages . 79
12.8.2 Transmitted messages . 79
13 Specific tests of network layer . 79
13.1 Regional area designation by VDL message . 79
13.1.1 Method of measurement . 79
13.1.2 Required results . 80
13.2 Regional area designation by serial message or manually . 80
13.2.1 Method of measurement . 80
13.2.2 Required result . 80
13.3 Management of received regional operating settings . 80
13.3.1 Replacement or erasure of dated or remote regional operating settings . 80
13.3.2 Channel management by addressed Message 22 . 81
13.3.3 Invalid regional operating areas . 82
13.3.4 Continuation of autonomous mode reporting rate . 82
13.3.5 Other conditions . 82
Annex A (informative) Results of computer simulations and testing of CSTDMA
technology . 83
A.1 Computer simulations . 83
A.2 Carrier-sense tests . 84
A.3 Range tests . 85
A.4 Conclusion . 85
Annex B (informative) Description of the system . 86
Annex C (normative) DSC channel management . 87
C.1 DSC functionality . 87
C.2 DSC time sharing . 87
C.3 DSC functionality tests . 88
C.3.1 General . 88
C.3.2 Regional area designation . 88
C.3.3 Scheduling . 88

– 6 – IEC 62287-1:2017  IEC 2017
C.3.4 DSC flag in Message 18 . 88
C.3.5 DSC monitoring time plan . 88
C.3.6 Replacement or erasure of dated or remote regional operating settings . 89
C.3.7 Test of addressed telecommand . 89
C.3.8 Invalid regional operating areas . 90
C.4 DSC receiver tests . 90
C.4.1 General . 90
C.4.2 Maximum sensitivity. 90
C.4.3 Error behaviour at high input levels. 91
C.4.4 Co-channel rejection . 91
C.4.5 Adjacent channel selectivity . 91
C.4.6 Spurious response rejection . 92
C.4.7 Intermodulation response rejection . 92
C.4.8 Blocking or desensitisation . 93
Annex D (informative) Channel management regions . 94
Bibliography . 95

Figure 1 – OSI layer model . 22
Figure 2 – Carrier-sense timing . 27
Figure 3 – Power versus time mask . 28
Figure 4 – Transmission packet . 29
Figure 5 – Training sequence . 30
Figure 6 – Transmission timing . 32
Figure 7 – Example for CSTDMA access. 33
Figure 8 – Format for repeating four-packet cluster . 44
Figure 9 – Measurement arrangement for carrier power . 61
Figure 10 – Emission mask . 62
Figure 11 – Measurement arrangement for modulation accuracy . 63
Figure 12 – Measurement arrangement . 64
Figure 13 – Measurement arrangement with two generators . 66
Figure 14 – SINAD or PER/BER measuring equipment . 68
Figure 15 – Measurement arrangement for intermodulation . 70
Figure 16 – Configuration for carrier-sense threshold test . 75
Figure 17 – Regional area scenario . 80
Figure A.1 – Effect on Class A AIS messages of Class B messages . 83
Figure A.2 – Reception of messages by Class A AIS . 84
Figure A.3 – Reception of messages by Class B AIS . 84
Figure A.4 – Range achieved by a Class A AIS from Class B AIS . 85
Figure D.1 – Channel management regions used for test given in 13.3.1 . 94

Table 1 – Position sensor fallback conditions . 19
Table 2 – Use of accuracy (PA) flag . 20
Table 3 – Transceiver characteristics . 23
Table 4 – Transmitter parameters . 24
Table 5 – Receiver parameters . 25

IEC 62287-1:2017  IEC 2017 – 7 –
Table 6 – Definition of timings for Figure 3 . 28
Table 7 – Start-buffer . 30
Table 8 – Summary of the transmission packet . 31
Table 9 – Transmission timing . 32
Table 10 – Access parameters . 33
Table 11 – Use of VDL messages by a Class B "CS" AIS . 36
Table 12 – Number of data bits for use with Message 14 . 37
Table 13 – Contents of Message 18 . 38
Table 14 – Message 24 Part A . 39
Table 15 – Message 24 Part B . 39
Table 16 – Contents of Message 23 . 40
Table 17 – Reporting interval settings for use with Message 23 . 41
Table 18 – Channel management. 42
Table 19 – Content of first two packets . 45
Table 20 – Fixed PRS data derived from ITU-T O.153. 45
Table 21 – Test summary. 48
Table 22 – Peak frequency deviation versus time. 63
Table 23 – Frequencies for inter-modulation test . 70
Table 24 – Required threshold test results . 75
Table 25 – Required carrier-sense timing results . 76
Table 26 – Required channels in use . 80
Table C.1 – DSC monitoring times . 88

– 8 – IEC 62287-1:2017  IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – CLASS B SHIPBORNE EQUIPMENT
OF THE AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 1: Carrier-sense time division multiple access
(CSTDMA) techniques
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62287-1 has been prepared by IEC technical
committee 80: Maritime navigation and radiocommunication equipment and systems.
This third edition cancels and replaces the second edition published in 2010 and
Amendment 1:2013. This edition constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition: in the synchronisation method, addition of a direct method for synchronisation from an
internal UTC source.
IEC 62287-1:2017  IEC 2017 – 9 –
The text of this document is based on the following documents:
FDIS Report on voting
80/837/FDIS 80/842/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62287 series published under the general title Maritime navigation
and radiocommunication equipment and systems – Class B shipborne equipment of the
automatic identification system (AIS), can be found on the IEC website.
The committee has decided tha
...