EN 62287-2:2013

SLOVENSKI STANDARD
01-september-2013
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Maritime navigation and radiocommunication equipment and systems - Class B
shipborne equipment of the automatic identification system (AIS) - Part 2: Self-organising
time division multiple access (SOTDMA) techniques
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt –
Geräte der Klasse B des automatischen Identifikationssystems (AIS) für Schiffe – Teil 2:
Sich selbst abstimmende Zeitmultiplex-Vielfachzugriffstechniken (SOTDMA)
/
Ta slovenski standard je istoveten z: EN 62287-2:2013
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 62287-2
NORME EUROPÉENNE
June 2013
EUROPÄISCHE NORM
ICS 47.020.70
English version
Maritime navigation and radiocommunication equipment and systems -
Class B shipborne equipment
of the automatic identification system (AIS) -
Part 2: Self-organising time division multiple access (SOTDMA)
techniques
(IEC 62287-2:2013)
Matériels et systèmes de navigation et de Navigations- und
radiocommunications maritimes - Funkkommunikationsgeräte und -systeme
Transpondeur embarqué du système für die Seeschifffahrt – Geräte der Klasse
d'identification automatique (AIS) de B des automatischen
classe B - Identifikationssystems (AIS) für Schiffe –
Partie 2: Technique d'accès multiple par Teil 2: Sich selbst abstimmende
répartition dans le temps auto-adaptatif Zeitmultiplex-Vielfachzugriffstechniken
(SOTDMA) (SOTDMA)
(CEI 62287-2:2013) (IEC 62287-2:2013)

This European Standard was approved by CENELEC on 2013-04-22. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62287-2:2013 E
Foreword
The text of document 80/685/FDIS, future edition 1 of IEC 62287-2, 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 62287-2:2013.
The following dates are fixed:
• latest date by which the document has (dop) 2014-01-22
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-04-22
• latest date by which the national
standards conflicting with the

document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
Endorsement notice
The text of the International Standard IEC 62287-2:2013 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 62287-1:2010 NOTE  Harmonized as EN 62287-1:2011 (not modified).
ISO 9000 NOTE  Harmonized as EN ISO 9000.

- 3 - EN 62287-2:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60945 2002 Maritime navigation and radiocommunication EN 60945 2002
+ corr. April 2008 equipment and systems - General
requirements - Methods of testing and
required test results
IEC 61108 Series Maritime navigation and radiocommunication EN 61108 Series
equipment and systems - Global navigation
satellite systems (GNSS)
IEC 61108-4 - Maritime navigation and radiocommunication EN 61108-4 -
equipment and systems - Global navigation
satellite systems (GNSS) -
Part 4: Shipborne DGPS and DGLONASS
maritime radio beacon receiver equipment -
Performance requirements, methods of testing
and required test results
IEC 61162 Series Maritime navigation and radiocommunication EN 61162 Series
equipment and systems - Digital interfaces

IEC 61162-1 - Maritime navigation and radiocommunication EN 61162-1 -
equipment and systems - Digital interfaces -
Part 1: Single talker and multiple listeners

IEC 61993-2 - Maritime navigation and radiocommunication EN 61993-2 -
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

ITU Radio 2012 Appendices - -
regulations
ITU-R - Interim solutions for improved efficiency in the - -
Recommendation use of the band 156-174 MHz by stations in
M.1084-5 the maritime mobile service

ITU-R 1998 Characteristics of a transponder system using - -
Recommendation digital selective calling techniques for use with
M.825-3 vessel traffic services and ship-to-ship
identification
ITU-R 2010 Technical characteristics for an automatic - -
Recommendation identification system using time-division
M.1371-4 multiple access in the VHF maritime mobile
band
IEC 62287-2 ®
Edition 1.0 2013-03
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems – Class B

shipborne equipment of the automatic identification system (AIS) –

Part 2: Self-organising time division multiple access (SOTDMA) techniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XC
ICS 47.020.70 ISBN 978-2-83220-682-9

– 2 – 62287-2 © IEC:2013(E)
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Abbreviations . 10
4 General requirements . 11
4.1 General . 11
4.1.1 Capabilities of the Class B “SO” AIS . 11
4.1.2 Quality assurance . 11
4.1.3 Safety of operation . 11
4.1.4 Additional features . 12
4.1.5 Functionality . 12
4.2 Manuals . 12
4.3 Marking and identification . 12
5 Environmental, power supply, interference and safety requirements . 12
6 Performance requirements . 13
6.1 Internal processes . 13
6.2 Operating frequency channels . 14
6.3 Internal GNSS receiver for position reporting. 14
6.4 Identification . 14
6.5 AIS Information . 14
6.5.1 Information content . 14
6.5.2 Information reporting intervals . 15
6.5.3 Short safety-related messages . 16
6.5.4 Permissible initialisation period . 16
6.6 Alarms and indications, fall-back arrangements . 16
6.6.1 Built-in integrity tests (BIIT) . 16
6.6.2 Transmitter shutdown procedure . 17
6.6.3 Position sensor fallback conditions . 18
6.7 User interface . 18
6.7.1 Indication and display . 18
6.7.2 Static data input . 19
6.7.3 External interfaces . 19
6.8 Protection from invalid control commands . 19
7 Technical requirements . 19
7.1 General . 19
7.2 Physical layer . 20
7.2.1 General . 20
7.2.2 Receiver characteristics . 20
7.2.3 Other characteristics . 21
7.2.4 Transmitter requirements . 22
7.3 Link layer . 23
7.3.1 General . 23
7.3.2 Link sub-layer 1: Medium Access Control (MAC) . 23
7.3.3 Link sub-layer 2: Data Link Service (DLS). 25
7.3.4 Link sub-layer 3: Link Management Entity (LME) . 25
7.4 Network layer . 29

62287-2 © IEC:2013(E) – 3 –
7.4.1 General . 29
7.4.2 Management of regional operating settings. 29
7.4.3 Multi-channel operation . 30
7.5 Transport layer . 30
7.6 Presentation Interface . 31
7.7 DSC receive capability . 31
8 Test conditions . 31
8.1 General . 31
8.2 Normal test conditions . 31
8.2.1 Temperature and humidity . 31
8.2.2 Power supply . 31
8.3 Extreme test conditions . 31
8.4 Test signals . 31
8.4.1 Standard test signal number 1 . 31
8.4.2 Standard test signal number 2 . 32
8.4.3 Standard test signal number 3 . 32
8.4.4 Standard test signal number 4 . 32
8.5 Standard test environment . 33
8.5.1 Test setup . 33
8.5.2 Sensor test input . 33
8.5.3 Synchronisation . 33
8.5.4 Test signals applied to the receiver input . 33
8.5.5 Waiver for receivers . 34
8.5.6 Artificial antenna (dummy load) . 34
8.5.7 Modes of operation of the transmitter . 34
8.5.8 Common test conditions for protection from invalid controls . 34
8.5.9 Measurement uncertainties . 34
9 Power supply, environmental and EMC tests . 35
9.1 Test summary. 35
9.2 Vibration . 36
9.2.1 Purpose . 36
9.2.2 Method of measurement . 36
9.2.3 Required results . 36
9.3 Shock . 36
9.3.1 Purpose . 36
9.3.2 Method of measurement . 36
9.3.3 Required result . 36
9.4 Performance tests / checks . 36
9.5 Under voltage test (brown out) . 37
9.5.1 Purpose . 37
9.5.2 Method of test . 37
9.5.3 Required result . 37
9.6 Under voltage test (short term) . 37
9.6.1 Purpose . 37
9.6.2 Method of test . 37
9.6.3 Required result . 37
10 Operational tests . 37
10.1 General . 37
10.1.1 Tests by inspection . 37

– 4 – 62287-2 © IEC:2013(E)
10.1.2 Safety of operation . 38
10.1.3 Additional features . 38
10.2 Modes of operation . 38
10.2.1 Autonomous mode . 38
10.2.2 Single messages . 40
10.2.3 Polled mode / Interrogation response . 43
10.3 Channel selection . 44
10.3.1 Valid channels . 44
10.3.2 Invalid channels. 44
10.4 Internal GNSS receiver . 44
10.5 AIS information. 45
10.5.1 Information content . 45
10.5.2 Information update intervals . 45
10.6 Initialisation period . 47
10.6.1 Purpose . 47
10.6.2 Method of measurement . 47
10.6.3 Required results . 47
10.7 Alarms and indications, fall-back arrangements . 47
10.7.1 Built in integrity test . 47
10.7.2 Transceiver protection . 48
10.7.3 Transmitter shutdown procedure . 48
10.7.4 Position sensor fallback conditions . 48
10.8 User interface . 49
10.8.1 Status indication . 49
10.8.2 Message display . 49
10.8.3 Static data input . 50
11 Physical tests . 51
11.1 TDMA transmitter . 51
11.1.1 Frequency error . 51
11.1.2 Carrier power . 51
11.1.3 Transmission spectrum . 52
11.1.4 Modulation accuracy . 53
11.1.5 Transmitter output power versus time function . 54
11.2 TDMA receivers . 55
11.2.1 Sensitivity . 55
11.2.2 Error behaviour at high input levels . 56
11.2.3 Co-channel rejection . 56
11.2.4 Adjacent channel selectivity . 57
11.2.5 Spurious response rejection . 58
11.2.6 Intermodulation response rejection . 60
11.2.7 Blocking or desensitisation . 62
11.3 Conducted spurious emissions . 62
11.3.1 Spurious emissions from the receiver . 62
11.3.2 Spurious emissions from the transmitter . 63
12 Specific tests of Link layer . 63
12.1 TDMA synchronisation . 64
12.1.1 Synchronisation test using UTC direct and indirect . 64
12.1.2 Synchronisation test without UTC, EUT receiving semaphore . 64
12.2 Time division (frame format) . 65

62287-2 © IEC:2013(E) – 5 –
12.2.1 Purpose . 65
12.2.2 Method of measurement . 65
12.2.3 Required results . 65
12.3 Synchronisation jitter . 65
12.3.1 Definition . 65
12.3.2 Purpose . 65
12.3.3 Method of measurement . 65
12.3.4 Required results . 65
12.4 Data encoding (bit stuffing) . 65
12.4.1 Purpose . 65
12.4.2 Method of measurement . 65
12.4.3 Required results . 66
12.5 Frame check sequence . 66
12.5.1 Purpose . 66
12.5.2 Method of measurement . 66
12.5.3 Required results . 66
12.6 Slot allocation (Channel access protocols) . 66
12.6.1 Network entry . 66
12.6.2 Autonomous scheduled transmissions (SOTDMA) . 66
12.6.3 Autonomous scheduled transmissions (ITDMA) . 67
12.6.4 Transmission of Messages 24A and 24B (ITDMA) . 67
12.6.5 Assigned operation . 67
12.6.6 Group assignment . 69
12.6.7 Base station reservations . 73
12.7 Message formats . 74
12.7.1 Received messages. 74
12.7.2 Transmitted messages . 74
13 Specific tests of network layer . 74
13.1 Regional area designation by VDL Message . 74
13.1.1 Purpose . 74
13.1.2 Method of measurement . 74
13.1.3 Required results . 75
13.2 Channel management by addressed Message 22 . 76
13.2.1 Purpose . 76
13.2.2 Method of measurement . 76
13.2.3 Required results . 76
13.3 Invalid regional operating areas. 76
13.3.1 Purpose . 76
13.3.2 Method of measurement . 76
13.3.3 Required test results . 76
13.4 Continuation of autonomous mode reporting interval . 76
13.4.1 Purpose . 76
13.4.2 Method of test . 77
13.4.3 Required result . 77
13.5 Slot reuse and FATDMA reservations . 77
13.5.1 Method of measurement . 77
13.5.2 Required results . 77
13.6 Other features . 77
Annex A (normative) DSC channel management . 78

– 6 – 62287-2 © IEC:2013(E)
Annex B (normative) Calculation of area size . 86
Bibliography . 87

Figure 1 – OSI layer model . 20
Figure 2 – Power versus time mask . 24
Figure 3 – Format for repeating four-packet cluster . 32
Figure 4 – Measurement arrangement for carrier power . 51
Figure 5 – Emission mask . 53
Figure 6 – Measurement arrangement for modulation accuracy . 53
Figure 7 – Measurement arrangement . 55
Figure 8 – Measurement arrangement with two generators . 57
Figure 9 – SINAD or PER/BER measuring equipment . 59
Figure 10 – Measurement arrangement for intermodulation . 61
Figure 11 – Regional transitional zones . 75

Table 1 – Dynamic information autonomous reporting intervals for Class B “SO” AIS . 16
Table 2 – BIIT and reaction to malfunctions . 17
Table 3 – Position sensor fallback conditions . 18
Table 4 – Required receiver performance . 21
Table 5 – Transceiver characteristics . 21
Table 6 – Transmitter characteristics . 23
Table 7 – Definitions of timing for Figure 2 . 25
Table 8 – Use of VDL Messages by a Class B “SO” AIS . 28
Table 9 – Content of first two packets . 32
Table 10 – Fixed PRS data derived from Recommendation ITU-T O.153 . 33
Table 11 – Test . 35
Table 12 – Peak frequency deviation versus time. 54
Table 13 – Frequencies for intermodulation test . 61
Table 14 – Regional area scenario . 75
Table 15 – Required channels in use . 75
Table A.1 – DSC monitoring times . 79
Table B.1 – Coordinate points . 86

62287-2 © IEC:2013(E) – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
CLASS B SHIPBORNE EQUIPMENT OF
THE AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: Self-organising time division multiple access
(SOTDMA) 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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
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agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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6) All users should ensure that they have the latest edition of this publication.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 62287-2 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
The text of this standard is based on the following documents:
FDIS Report on voting
80/685/FDIS 80/691/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 8 – 62287-2 © IEC:2013(E)
A list of all parts in the IEC 62287 series, published under the general title Maritime
navigation and radiocommunication and systems – Class B shipborne equipment of the
automatic identification system (AIS), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication
indicates that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
62287-2 © IEC:2013(E) – 9 –
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
CLASS B SHIPBORNE EQUIPMENT OF
THE AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: Self-organising time division multiple access
(SOTDMA) techniques
1 Scope
This part of IEC 62287 specifies operational and performance requirements, methods of
testing and required test results for Class B “SO” shipborne AIS equipment using Self-
organised TDMA (SOTDMA) techniques as described in Recommendation ITU-R M.1371. This
standard takes into account other associated IEC International Standards and existing
national standards, as applicable.
The main differences between Class B “CS” (IEC 62287-1) and Class B “SO” units are that
the Class B “SO”:
• covers all 25 kHz channels listed in Recommendation ITU-R M.1084-5;
• only uses the internal GNSS, no position sensor input is allowed;
• requires use of VDL Message 17 for correction of the internal GNSS;
• has a presentation interface;
• has additional reporting intervals, down to 5 s;
• has two power settings, with a high level of 5 W;
• has the capability to transmit binary messages.
It is applicable for AIS equipment used on craft that are not covered by a mandatory carriage
requirement of AIS under SOLAS Chapter V.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60945:2002, Maritime navigation and radiocommunication equipment and systems –
General requirements – Methods of testing and required test results
IEC 61108 (all parts), Maritime navigation and radio communication equipment and systems
– Global navigation satellite systems (GNSS)
IEC 61108-4, Maritime navigation and radio communication equipment and systems – Global
navigation satellite systems (GNSS) – Part 4: Shipborne DGPS and DGLONASS maritime
radio beacon receiver equipment – Performance requirements, methods of testing and
required test results
IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems
– Digital interfaces
– 10 – 62287-2 © IEC:2013(E)
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC 61993-2, Maritime navigation and radio communication equipment and systems –
Automatic identification systems (AIS) – Part 2: Class A shipborne equipment of the universal
automatic identification system (AIS) – Operational and performance requirements, methods
of test and required test results
ITU Radio regulations 2012, Appendices
ITU-R Recommendation M.825-3:1998, Characteristics of a transponder system using digital
selective calling techniques for use with vessel traffic services and ship-to-ship identification
ITU-R Recommendation M.1084-5, Interim solutions for improved efficiency in the use of the
band 156-174 MHz by stations in the maritime mobile service
ITU-R Recommendation M.1371-4:2010, Technical characteristics for an automatic
identification system using time division multiple access in the VHF maritime mobile band
3 Abbreviations
AIS Automatic Identification System
BER Bit Error Rate
BIIT Built-In Integrity Tests
BT Bandwidth Time
COG Course over ground
CRC Cyclic Redundancy Check
CSD Compass Safe Distance
DGNSS Differential Global Navigation Satellite Service
DLS Data Link Service
DSC Digital Selective Calling
EUT Equipment under test
FM Frequency Modulation
GMSK Gaussian Minimum Shift Keying
GNSS Global Navigation Satellite Service
IMO International Maritime Organization
ITDMA Incremental Time Division Multiple Access
ITU International Telecommunication Union
LME Link Management Entity
MAC Medium access control
MMSI Maritime Mobile Service Identity
MSSA Multi-channel slot selection access
NM Nautical mile (1 NM = 1 852 m)
NRZI Non Return to Zero Inverted
OSI Open Systems Interconnection model
PER Packet Error Rate
PI Presentation Interface
RAIM Receiver autonomous integrity monitoring

62287-2 © IEC:2013(E) – 11 –
RATDMA Random Access Time Division Multiple Access
RF Radio Frequency
RR Radio Regulations
Rx Receive
SAR Search and rescue
SINAD Signal Interference Noise and Distortion ratio
SOG Speed over ground
SOTDMA Self Organised Time Division Multiple Access
TDMA
...