VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects

REN/AERO-00019-3

Radijska oprema za digitalno povezavo VHF zrak-tla in zrak-zrak, 4. način - Tehnične karakteristike in merilne metode za aeronavtično mobilno (letalsko) opremo - 3. del: Dodatni vidiki v zvezi z radiodifuzijo

Ta dokument se uporablja za radijsko opremo naslednjih vrst:
• aeronavtične mobilne (letalske) radijske oddajnike, oddajnike-sprejemnike in sprejemnike za zelo visokofrekvenčno (VHF) digitalno povezavo (VDL) za komunikacije zrak-tla in zrak-zrak, 4. način, ki delujejo v pasu VHF z uporabo modulacije frekvenčnega premičnega kodiranja prek filtra Gaussian (GFSK) z razmikom 25 kHz med kanali in so zmožni uravnavati na katerem koli izmed kanalov 25 kHz od 112.000 MHz do 136.975 MHz, kot je opredeljeno v standardih in priporočenih praksah (SARP) [i.2] ICAO za digitalne povezave (VDL).
Ta dokument vsebuje 3. del tehničnih specifikacij.
Ta dokument zagotavlja, da bo oprema, ki bo certificirana v skladu z njim, združljiva z ustreznimi standardi (SARP) [i.2] ICAO za VDL in tehničnim priročnikom ICAO za VDL4 [i.1].
Proizvajalci naj bodo pozorni, da razpon uravnavanja za oddajnik in sprejemnik lahko v prihodnje zajema tudi kateri koli kanal 25 kHz od 108.000 MHz do 111.975 MHz.
Ta dokument se nanaša na »aeronavtično mobilno (letalska in v nekaterih primerih tudi kopenska vozila)« opremo, v nadaljnjem besedilu: »mobilna« oprema.
Področje uporabe tega dokumenta je omejeno na mobilne postaje. Enakovredna specifikacija za zemeljske postaje je ETSI EN 301 842 [i.7].
Opis področja uporabe sistema VDL, 4. način, je naveden v 2. delu teh tehničnih specifikacij (glej ETSI EN 302 842-2 [2], 1. točka).
ETSI EN 302 842-1 [1] obravnava preskuse fizične plasti. Standard ETSI EN 302 842-2 [2] zajema preskuse plasti povezav, ki zadostujejo za podporo radiodifuzijskih funkcij, vključno z zahtevami in preskusi, ki zadostujejo za prepoznavanje in odgovarjanje na prenose, povezane s komunikacijo točka-točka. Ta dokument vsebuje tehnične specifikacije za mobilni oddajnik-sprejemnik VDL, 4. način, ki podpira polni avtomatski odvisni nadzor – difuzija (ADS-B) in izbirno dodatne funkcije ene storitve ali kombinacije naslednjih storitev:
• difuzija nadzornih podatkov (TIS-B);
• difuzija informacij za letalstvo (FIS-B);
• storitev izboljšave GNSS – difuzija (GNS-B).
Pričakuje se, da funkcije storitev TIS-B, FIS-B ali GNS-B v opremi na letalu omogoča procesor TIS-B, FIS B ali GNS-B, ki je lahko znotraj sprejemnika-oddajnika VDL, 4. način, lahko pa se nahaja tudi v ločeni enoti. Za podporo sprejemanja sporočil TIS-B, FIS-B ali GNS-B je tako minimalna funkcionalnost, ki se zahteva od osnovne oddajno-sprejemne enote VDL, 4. način, na letalu (tj. enote, ki ne vsebuje procesorja TIS-B, FIS-B ali GNS-B), posredovanje vseh prejetih TIS-B, FIS-B ali GNS-B sporočil procesorju TIS-B, FIS-B ali GNS-B.
Ker so merjeni podatki zmogljivosti opreme lahko odvisni od merilnih metod, ta dokument priporoča standardne preskusne pogoje in metode.
Ta dokument je organiziran na naslednji način:
• točka 2 vsebuje sklice do ustreznih dokumentov;
• točka 3 vsebuje splošne opredelitve, kratice in simbole, ki se uporabljajo;
• točka 4 opisuje funkcije mobilne postaje VDL, 4. način, za podporo storitev ADS-B, TIS-B, FIS-B in GNS-B;
• točka 5 vsebuje specifikacije lastnosti mobilnih postaj VDL, 4. način, ki podpirajo storitve ADS-B, TIS-B, FIS-B in GNS-B;
• točka 6 vsebuje splošne zahteve projekta;
• točka 7 vsebuje preskuse protokolov s poudarkom na funkcijah ADS-B, TIS-B, FIS-B in GNS-B sistema;
• dodatek A vsebuje podrobne sklice do ustreznih zahtev, ki so vključene v tehnični priročnik ICAO za VDL4
[i.1];
• dodatek B vsebuje bibliografijo.
Upoštevati je treba, da lahko sistem podpira zelo širok nabor funkcij. Podajanje določenih preskusov za celoten nabor funkcij ni praktično. Tako so podani podrobni preskusi za osrednje funkcije za podporo storitev ADS-B, FIS-B, TIS-B in GNS-B, ki se osredotočajo na tiste zahteve sistema, ki lahko v primeru nepravilnega izvajanja povzročijo poslabšanje storitve, ki jo zagotavljajo druge postaje VDL, 4. način.

General Information

Status
Published
Publication Date
12-Apr-2015
Technical Committee
Current Stage
12 - Completion
Due Date
20-Apr-2015
Completion Date
13-Apr-2015

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ETSI EN 302 842-3 V1.4.1 (2015-04) - VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment;Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects49.090On-board equipment and instruments33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 302 842-3 V1.4.1SIST EN 302 842-3 V1.4.1:2015en,fr,de01-oktober-2015SIST EN 302 842-3 V1.4.1:2015SLOVENSKI
STANDARD



SIST EN 302 842-3 V1.4.1:2015



ETSI EN 302 842-3 V1.4.1 (2015-04) VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects
EUROPEAN STANDARD SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)2
Reference REN/AERO-00019-3 Keywords aeronautical, digital, radio, testing, VHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2015. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)3 Contents Intellectual Property Rights . 5 Foreword . 5 Modal verbs terminology . 5 Introduction . 6 1 Scope . 7 2 References . 8 2.1 Normative references . 8 2.2 Informative references . 8 3 Definitions and abbreviations . 9 3.1 Definitions . 9 3.1.1 Basic reference model definitions . 9 3.1.2 Service conventions definitions . 9 3.1.3 General definitions . 9 3.1.4 Definition of bit order . 10 3.2 Abbreviations . 10 4 General description of VDL Mode 4 broadcast services . 12 4.1 General . 12 4.2 Automatic Dependent Surveillance-Broadcast (ADS-B) . 12 4.3 Traffic Information Service-Broadcast (TIS-B) . 13 4.4 Flight Information Service-Broadcast (FIS-B) . 14 4.5 GNSS Augmentation Service-Broadcast (GNS-B) . 15 5 Minimum performance specification under standard test conditions . 16 5.1 Requirements for ADS-B . 16 5.1.1 Information Field Formats . 16 5.1.2 ADS-B Request . 26 5.1.2.1 ADS-B request format. 26 5.1.2.2 Sleep Mode . 26 5.1.2.3 Automatic Selection of Variable Information Fields . 26 5.1.3 Default ADS-B Reporting . 29 5.1.4 ADS-B Procedures . 29 5.1.5 CTRL Parameters . 31 5.1.5.1 Directory of Service (DOS) message . 31 5.1.5.2 Channel Management Parameter . 32 5.1.6 Definitions for Compact Position Reporting . 42 5.1.6.1 Information Field Offset Encoding . 42 5.1.6.2 Information Field Offset Decoding . 44 5.1.6.3 Patch ID Encoding . 45 5.1.6.4 Patch Id Decoding . 45 5.1.7 Encoding of UDATA (udid) . 46 5.2 Requirements for TIS-B . 46 5.2.1 Traffic Information Volume (TIV) . 46 5.2.2 Void . 46 5.2.3 Message format . 46 5.2.4 Management message . 47 5.2.5 Aircraft target messages (airborne TIV) . 49 5.2.6 Aircraft target messages (ground TIV) . 51 5.2.7 Ground vehicle target messages (ground TIV) . 52 5.2.8 TIS-B offset encoding . 53 5.3 Requirements for FIS-B . 56 5.3.1 Message format for received FIS-B messages . 56 5.3.2 Meteorological Aerodrome Report (METAR) message . 57 5.3.3 Special Observations and Reports (SPECI) message . 64 5.3.4 Automatic Terminal Information Service (ATIS) message . 65 5.3.5 Runway Condition (RCN) message . 67 SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)4 5.3.6 SIGnificant METeorological Information (SIGMET) message . 71 5.3.7 Temporary Segregated Areas (TSA) message . 72 5.3.8 FIS-B report request message . 75 5.3.9 Void . 76 5.3.9a Airborne system functions . 76 5.3.9a.1 Transmission of requests . 76 5.3.9a.2 Differentiation between reports . 76 5.4 Requirements for GNSS Augmentation Service Broadcast (GNS-B) message . 77 5.4.1 Message format . 77 5.4.2 Message Type 1 . 78 5.4.3 Message Type 2 . 81 5.4.4 Message Type 4 . 84 5.4.5 CRC Calculation . 90 5.4.5.1 GNS-B CRC . 90 5.4.5.2 FAS CRC . 90 5.4.5.3 Ephemeris CRC . 91 6 General design requirements . 91 7 Protocol test procedures . 91 7.1 General . 91 7.2 Required test rig . 92 7.3 Protocol test-suite description methodology . 92 7.4 Detailed protocol test procedures . 92 7.4.1 Test-suite overview . 92 7.4.2 Declarations . 95 7.4.3 Constraints . 96 7.4.3.1 Abbreviations . 96 7.4.3.1.1 Subfield mnemonics . 96 7.4.3.1.2 Station addresses and positions . 99 7.4.3.1.3 Tables of values for use in CPR test cases . 100 7.4.3.1.4 Tables of values for use in content checking test cases . 112 7.4.3.1.5 VDL4 Burst formats . 146 7.4.3.2 Test cases . 180 7.4.3.2.1 Test case macros . 181 7.4.3.2.2 Test case descriptions . 182 Annex A (informative): Cross reference matrix . 261 Annex B (informative): Bibliography . 271 History . 272
SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)5 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://ipr.etsi.org). 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 (EN) has been produced by ETSI Technical Committee Aeronautics (AERO). The present document is part 3 of a multi-part deliverable covering the VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment, as identified below: Part 1: "Physical layer"; Part 2: "General description and data link layer"; Part 3: "Additional broadcast aspects"; Part 4: "Point-to-point functions". The present document is accompanied by an equivalent ground-based standard, ETSI EN 301 842 [i.7] parts 1 to 5, covering the VHF air-ground Data Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment. NOTE: Minimum Operational Performance Specifications (MOPS) are also being developed for VDL Mode 4. EUROCAE have previously published Interim MOPS for VDL Mode 4 [i.6] which are a sub set of ETSI EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present document) and ETSI EN 302 842-4 [3]. ETSI EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present document) and ETSI EN 302 842-4 [3] comply with the requirements of CEC Mandate M/318 [i.8].
National transposition dates Date of adoption of this EN: 6 April 2015 Date of latest announcement of this EN (doa): 31 July 2015 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 January 2016 Date of withdrawal of any conflicting National Standard (dow): 31 January 2017
Modal verbs terminology In the present document "shall", "shall not", "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. SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)6 Introduction The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [i.2]. The present document may be used to produce tests for the assessment of the performance of the equipment. The performance of the equipment submitted for type testing should be representative of the performance of the corresponding production model. The present document has been written on the assumption that: • the type test measurements will be performed only once, in an accredited test laboratory and the measurements accepted by the various authorities in order to grant type approval; • if equipment available on the market is required to be checked it will be tested in accordance with the methods of measurement specified in the present document or a documented alternative approved by the certifying authority; • equipment complies with ETSI EN 302 842-1 [1] and ETSI EN 302 842-2 [2]. NOTE: The present document has been produced with a view to maintaining consistency of numbering with the equivalent standard for ground equipment (ETSI EN 301 842 [i.7] parts 1 to 4). Where requirements are the same, they have been given the same number. Some new airborne requirements have been inserted between requirements that were sequential in ETSI EN 301 842 [i.7] parts 1 to 4. This has led to a non-standard form of numbering for new requirements in some places. SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)7 1 Scope The present document applies to the following radio equipment types: • Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [i.2]. The present document provides part 3 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [i.2] and ICAO VDL4 Technical Manual [i.1]. Manufacturers should note that in future the tuning range for the transmitter and the receiver may also cover any 25 kHz channel from 108,000 MHz to 111,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment.
The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is ETSI EN 301 842 [i.7]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see ETSI EN 302 842-2 [2], clause 1). ETSI EN 302 842-1 [1] deals with tests of the physical layer. ETSI EN 302 842-2 [2] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 mobile transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services: • Traffic Information Service-Broadcast (TIS-B); • Flight Information Service-Broadcast (FIS-B); • GNSS Augmentation Service-Broadcast (GNS-B). The TIS-B, FIS-B, or GNS-B reception processing functionality in the airborne equipment is expected to be provided by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B message reception, the minimum functionality demanded of a basic VDL Mode 4 airborne transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to pass to the TIS-B, FIS-B or GNS-B processor, all TIS-B, FIS-B or GNS-B messages received.
As the measured values of equipment performance may be a function of the method of measurement, standard test conditions and methods of test are recommended in the present document. The present document is organized as follows: • clause 2 provides references to relevant documents; • clause 3 provides general definitions, abbreviations and symbols used; • clause 4 describes the VDL Mode 4 mobile station functionality to support ADS-B, TIS-B, FIS-B and GNS-B; • clause 5 provides performance specifications for the VDL Mode 4 mobile station supporting ADS-B, TIS-B, FIS-B and GNS-B Services; • clause 6 provides general design requirements; • clause 7 provides protocol tests which emphasis the ADS-B, TIS-B, FIS-B and GNS-B functions of the system; SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)8 • annex A provides a detailed cross-reference to the relevant requirements contained in ICAO VDL4 Technical Manual [i.1]; • annex B provides a Bibliography. Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all aspects of functionality. The approach used is to provide detailed tests for the core functionality to support ADS-B, FIS-B, TIS-B and GNS-B focusing on the system requirements which, if wrongly implemented, could cause a deterioration in the service offered by other VDL Mode 4 stations. Mandating and Recommendation Phrases a) "Shall": - The use of the word "Shall" indicates a mandated criterion; i.e. compliance with the particular procedure or specification is mandatory and no alternative may be applied. b) "Should": - The use of the word "Should" (and phrases such as "It is recommended that.", etc.) indicates that though the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or criteria may be applied, provided that the manufacturer, installer or tester can provide information or data to adequately support and justify the alternative. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. [1] ETSI EN 302 842-1 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 1: Physical layer". [2] ETSI EN 302 842-2 (V1.4.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer". [3] ETSI EN 302 842-4 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 4: Point-to-point functions". [4] WMO Publication No. 306: "Manual on Codes Vol 1.1, Part A". 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. SIST EN 302 842-3 V1.4.1:2015



ETSI ETSI EN 302 842-3 V1.4.1 (2015-04)9 The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] ICAO Doc 9816 (First Edition 2004): "Manual on VHF Digital Link (VDL) Mode 4 - Part 2: Detailed Technical Specifications". [i.2] ICAO Annex 10 to the Convention on International Civil Aviation: "Aeronautical Telecommunications, Volume III: Communication Systems, Part I: Digital Data Communication Systems, chapter 6", including Amendment 88 (applicable 14/11/13). [i.3] RTCA DO-242A: "Minimum Aviation System Performance Standards for Automatic Dependent Surveillance Broadcast (ADS-B)". [i.4] Amendments 76 and 77 to Volume I of Annex 10 to the Convention on International Civil Aviation, International Civil Aviation Organization: Appendix B-B2, 3.6 "Ground-based augmentation system (GBAS)". NOTE: http://www.icao.int. [i.5] EUROCAE ED-114A: "Minimum Operational Performance Specification for Global Navigation Satellite Ground Based Augmentation System Ground Equipment to Support Category I Operations". NOTE: http://www.eurocae.net. [i.6] EUROCAE ED-108A: "MOPS for VDL Mode 4 Aircraft Transceiver for ADS-B", July 2001. [i.7] ETSI EN 301 842 (all parts): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment". [i.8] CEC Mandate M/318: "Mandate to CEN/CENELEC/ETSI for standardisation in the field of air traffic management systems and Galileo local components". 3 Definitions and abbreviations 3.1 Definitions 3.1.1 Basic reference model definitions See ETSI EN 302 842-2 [2], clause 3.1.1. 3.1.2 Service conventions definitions See ETSI EN 302 842-2 [2], clause 3.1.2. 3.1.3 General definitions For the purposes of the present document, the terms and definitions given in ETSI EN 302 842-1 [1], clause 3.1.3, ETSI EN 302 842-2 [2], clause 3.1.3 and the following apply: Automatic Dependent Surveillance-Broadcast (ADS-B): surveillance application transmitting parameters, such as position, track,
...

ETSI EN 302 842-3 V1.4.1 (2015-04)






EUROPEAN STANDARD
VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment;
Technical characteristics and methods of measurement
for aeronautical mobile (airborne) equipment;
Part 3: Additional broadcast aspects

---------------------- Page: 1 ----------------------
2 ETSI EN 302 842-3 V1.4.1 (2015-04)



Reference
REN/AERO-00019-3
Keywords
aeronautical, digital, radio, testing, VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2015.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 302 842-3 V1.4.1 (2015-04)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 6
1 Scope . 7
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.1.1 Basic reference model definitions . 9
3.1.2 Service conventions definitions . 9
3.1.3 General definitio ns . 9
3.1.4 Definition of bit order . 10
3.2 Abbreviations . 10
4 General description of VDL Mode 4 broadcast services . 12
4.1 General . 12
4.2 Automatic Dependent Surveillance-Broadcast (ADS-B) . 12
4.3 Traffic Information Service-Broadcast (TIS-B) . 13
4.4 Flight Information Service-Broadcast (FIS-B) . 14
4.5 GNSS Augmentation Service-Broadcast (GNS-B) . 15
5 Minimum performance specification under standard test conditions . 16
5.1 Requirements for ADS-B . 16
5.1.1 Information Field Formats . 16
5.1.2 ADS-B Request . 26
5.1.2.1 ADS-B request format. 26
5.1.2.2 Sleep Mode . 26
5.1.2.3 Automatic Selection of Variable Information Fields . 26
5.1.3 Default ADS-B Reporting . 29
5.1.4 ADS-B Procedures . 29
5.1.5 CTRL Parameters . 31
5.1.5.1 Directory of Service (DOS) message . 31
5.1.5.2 Channel Management Parameter . 32
5.1.6 Definitions for Compact Position Reporting . 42
5.1.6.1 Information Field Offset Encoding . 42
5.1.6.2 Information Field Offset Decoding . 44
5.1.6.3 Patch ID Encoding . 45
5.1.6.4 Patch Id Decoding . 45
5.1.7 Encoding of UDATA (udid) . 46
5.2 Requirements for TIS-B . 46
5.2.1 Traffic Information Volume (TIV) . 46
5.2.2 Void . 46
5.2.3 Message format . 46
5.2.4 Management message . 47
5.2.5 Aircraft target messages (airborne TIV) . 49
5.2.6 Aircraft target messages (ground TIV) . 51
5.2.7 Ground vehicle target messages (ground TIV) . 52
5.2.8 TIS-B offset encoding . 53
5.3 Requirements for FIS-B . 56
5.3.1 Message format for received FIS-B messages . 56
5.3.2 Meteorological Aerodrome Report (METAR) message . 57
5.3.3 Special Observations and Reports (SPECI) message . 64
5.3.4 Automatic Terminal Information Service (ATIS) message . 65
5.3.5 Runway Condition (RCN) message . 67
ETSI

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4 ETSI EN 302 842-3 V1.4.1 (2015-04)
5.3.6 SIGnificant METeorological Information (SIGMET) message . 71
5.3.7 Temporary Segregated Areas (TSA) message . 72
5.3.8 FIS-B report request message . 75
5.3.9 Void . 76
5.3.9a Airborne system functions . 76
5.3.9a.1 Transmission of requests . 76
5.3.9a.2 Differentiation between reports . 76
5.4 Requirements for GNSS Augmentation Service Broadcast (GNS-B) message . 77
5.4.1 Message format . 77
5.4.2 Message Type 1 . 78
5.4.3 Message Type 2 . 81
5.4.4 Message Type 4 . 84
5.4.5 CRC Calculation . 90
5.4.5.1 GNS-B CRC . 90
5.4.5.2 FAS CRC . 90
5.4.5.3 Ephemeris CRC . 91
6 General design requirements . 91
7 Protocol test procedures . 91
7.1 General . 91
7.2 Required test rig . 92
7.3 Protocol test-suite description methodology . 92
7.4 Detailed protocol test procedures . 92
7.4.1 Test-suite overview . 92
7.4.2 Declarations . 95
7.4.3 Constraints . 96
7.4.3.1 Abbreviations . 96
7.4.3.1.1 Subfield mnemonics . 96
7.4.3.1.2 Station addresses and positions . 99
7.4.3.1.3 Tables of values for use in CPR test cases . 100
7.4.3.1.4 Tables of values for use in content checking test cases . 112
7.4.3.1.5 VDL4 Burst formats . 146
7.4.3.2 Test cases . 180
7.4.3.2.1 Test case macros . 181
7.4.3.2.2 Test case descriptions . 182
Annex A (informative): Cross reference matrix . 261
Annex B (informative): Bibliography . 271
History . 272

ETSI

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5 ETSI EN 302 842-3 V1.4.1 (2015-04)
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://ipr.etsi.org).
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 (EN) has been produced by ETSI Technical Committee Aeronautics (AERO).
The present document is part 3 of a multi-part deliverable covering the VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne)
equipment, as identified below:
Part 1: "Physical layer";
Part 2: "General description and data link layer";
Part 3: "Additional broadcast aspects";
Part 4: "Point-to-point functions".
The present document is accompanied by an equivalent ground-based standard, ETSI EN 301 842 [i.7] parts 1 to 5,
covering the VHF air-ground Data Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground-based equipment.
NOTE: Minimum Operational Performance Specifications (MOPS) are also being developed for VDL Mode 4.
EUROCAE have previously published Interim MOPS for VDL Mode 4 [i.6] which are a sub set of ETSI
EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present document) and ETSI
EN 302 842-4 [3]. ETSI EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present
document) and ETSI EN 302 842-4 [3] comply with the requirements of CEC Mandate M/318 [i.8].

National transposition dates
Date of adoption of this EN: 6 April 2015
Date of latest announcement of this EN (doa): 31 July 2015
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2016
Date of withdrawal of any conflicting National Standard (dow): 31 January 2017

Modal verbs terminology
In the present document "shall", "shall not", "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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6 ETSI EN 302 842-3 V1.4.1 (2015-04)
Introduction
The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4
aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications
operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel
spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO
VDL SARPs [i.2].
The present document may be used to produce tests for the assessment of the performance of the equipment. The
performance of the equipment submitted for type testing should be representative of the performance of the
corresponding production model.
The present document has been written on the assumption that:
• the type test measurements will be performed only once, in an accredited test laboratory and the measurements
accepted by the various authorities in order to grant type approval;
• if equipment available on the market is required to be checked it will be tested in accordance with the methods
of measurement specified in the present document or a documented alternative approved by the certifying
authority;
• equipment complies with ETSI EN 302 842-1 [1] and ETSI EN 302 842-2 [2].
NOTE: The present document has been produced with a view to maintaining consistency of numbering with the
equivalent standard for ground equipment (ETSI EN 301 842 [i.7] parts 1 to 4). Where requirements are
the same, they have been given the same number. Some new airborne requirements have been inserted
between requirements that were sequential in ETSI EN 301 842 [i.7] parts 1 to 4. This has led to a
non-standard form of numbering for new requirements in some places.
ETSI

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7 ETSI EN 302 842-3 V1.4.1 (2015-04)
1 Scope
The present document applies to the following radio equipment types:
• Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters,
transceivers and receivers for air-ground and air-air communications operating in the VHF band, using
Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of
tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VDL
SARPs [i.2].
The present document provides part 3 of the technical specifications.
The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO
VDL SARPs [i.2] and ICAO VDL4 Technical Manual [i.1].
Manufacturers should note that in future the tuning range for the transmitter and the receiver may also cover any 25 kHz
channel from 108,000 MHz to 111,975 MHz.
The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which
will hereinafter be referred to as "mobile" equipment.
The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is
ETSI EN 301 842 [i.7].
A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications
(see ETSI EN 302 842-2 [2], clause 1).
ETSI EN 302 842-1 [1] deals with tests of the physical layer. ETSI EN 302 842-2 [2] deals with tests of the link layer
sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to
transmissions associated with point-to-point communication. The present document provides technical specifications
for a VDL Mode 4 mobile transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B)
capability and, optionally, the additional functionality of either, or a combination of, the following services:
• Traffic Information Service-Broadcast (TIS-B);
• Flight Information Service-Broadcast (FIS-B);
• GNSS Augmentation Service-Broadcast (GNS-B).
The TIS-B, FIS-B, or GNS-B reception processing functionality in the airborne equipment is expected to be provided
by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also
be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B message reception, the minimum
functionality demanded of a basic VDL Mode 4 airborne transceiver unit (i.e. one that does not have a TIS-B, FIS-B or
GNS-B processor housed within it) is to pass to the TIS-B, FIS-B or GNS-B processor, all TIS-B, FIS-B or GNS-B
messages received.
As the measured values of equipment performance may be a function of the method of measurement, standard test
conditions and methods of test are recommended in the present document.
The present document is organized as follows:
• clause 2 provides references to relevant documents;
• clause 3 provides general definitions, abbreviations and symbols used;
• clause 4 describes the VDL Mode 4 mobile station functionality to support ADS-B, TIS-B, FIS-B and GNS-B;
• clause 5 provides performance specifications for the VDL Mode 4 mobile station supporting ADS-B, TIS-B,
FIS-B and GNS-B Services;
• clause 6 provides general design requirements;
• clause 7 provides protocol tests which emphasis the ADS-B, TIS-B, FIS-B and GNS-B functions of the
system;
ETSI

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8 ETSI EN 302 842-3 V1.4.1 (2015-04)
• annex A provides a detailed cross-reference to the relevant requirements contained in ICAO VDL4
Technical Manual [i.1];
• annex B provides a Bibliography.
Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all
aspects of functionality. The approach used is to provide detailed tests for the core functionality to support ADS-B,
FIS-B, TIS-B and GNS-B focusing on the system requirements which, if wrongly implemented, could cause a
deterioration in the service offered by other VDL Mode 4 stations.
Mandating and Recommendation Phrases
a) "Shall":
- The use of the word "Shall" indicates a mandated criterion; i.e. compliance with the particular procedure
or specification is mandatory and no alternative may be applied.
b) "Should":
- The use of the word "Should" (and phrases such as "It is recommended that.", etc.) indicates that though
the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or
criteria may be applied, provided that the manufacturer, installer or tester can provide information or data
to adequately support and justify the alternative.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 302 842-1 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 1: Physical layer".
[2] ETSI EN 302 842-2 (V1.4.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 2: General description and data link layer".
[3] ETSI EN 302 842-4 (V1.3.1): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 4: Point-to-point functions".
[4] WMO Publication No. 306: "Manual on Codes Vol 1.1, Part A".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
ETSI

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9 ETSI EN 302 842-3 V1.4.1 (2015-04)
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ICAO Doc 9816 (First Edition 2004): "Manual on VHF Digital Link (VDL) Mode 4 - Part 2:
Detailed Technical Specifications".
[i.2] ICAO Annex 10 to the Convention on International Civil Aviation: "Aeronautical
Telecommunications, Volume III: Communication Systems, Part I: Digital Data Communication
Systems, chapter 6", including Amendment 88 (applicable 14/11/13).
[i.3] RTCA DO-242A: "Minimum Aviation System Performance Standards for Automatic Dependent
Surveillance Broadcast (ADS-B)".
[i.4] Amendments 76 and 77 to Volume I of Annex 10 to the Convention on International Civil
Aviation, International Civil Aviation Organization: Appendix B-B2, 3.6 "Ground-based
augmentation system (GBAS)".
NOTE: http://www.icao.int.
[i.5] EUROCAE ED-114A: "Minimum Operational Performance Specification for Global Navigation
Satellite Ground Based Augmentation System Ground Equipment to Support Category I
Operations".
NOTE: http://www.eurocae.net.
[i.6] EUROCAE ED-108A: "MOPS for VDL Mode 4 Aircraft Transceiver for ADS-B", July 2001.
[i.7] ETSI EN 301 842 (all parts): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment;
Technical characteristics and methods of measurement for ground-based equipment".
[i.8] CEC Mandate M/318: "Mandate to CEN/CENELEC/ETSI for standardisation in the field of air
traffic management systems and Galileo local components".
3 Definitions and abbreviations
3.1 Definitions
3.1.1 Basic reference model definitions
See ETSI EN 302 842-2 [2], clause 3.1.1.
3.1.2 Service conventions definitions
See ETSI EN 302 842-2 [2], clause 3.1.2.
3.1.3 General definitions
For the purposes of the present document, the terms and definitions given in ETSI EN 302 842-1 [1], clause 3.1.3,
ETSI EN 302 842-2 [2], clause 3.1.3 and the following apply:
Automatic Dependent Surveillance-Broadcast (ADS-B): surveillance application transmitting parameters, such as
position, track, ground speed and time via a broadcast mode data link for use by any air
...

ETSI EN 302 842-3 V1.4.0 (2014-12)






EUROPEAN STANDARD
VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment;
Technical characteristics and methods of measurement
for aeronautical mobile (airborne) equipment;
Part 3: Additional broadcast aspects

---------------------- Page: 1 ----------------------
2 ETSI EN 302 842-3 V1.4.0 (2014-12)



Reference
REN/AERO-00019-3
Keywords
aeronautical, digital, radio, testing, VHF
ETSI
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© European Telecommunications Standards Institute 2014.
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of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

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3 ETSI EN 302 842-3 V1.4.0 (2014-12)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 6
1 Scope . 7
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.1.1 Basic reference model definitions . 9
3.1.2 Service conventions definitions . 9
3.1.3 General definitio ns . 9
3.1.4 Definition of bit order . 10
3.2 Abbreviations . 10
4 General description of VDL Mode 4 broadcast services . 12
4.1 General . 12
4.2 Automatic Dependent Surveillance-Broadcast (ADS-B) . 12
4.3 Traffic Information Service-Broadcast (TIS-B) . 13
4.4 Flight Information Service-Broadcast (FIS-B) . 14
4.5 GNSS Augmentation Service-Broadcast (GNS-B) . 15
5 Minimum performance specification under standard test conditions . 16
5.1 Requirements for ADS-B . 16
5.1.1 Information Field Formats . 16
5.1.2 ADS-B Request . 26
5.1.2.1 ADS-B request format. 26
5.1.2.2 Sleep Mode . 26
5.1.2.3 Automatic Selection of Variable Information Fields . 27
5.1.3 Default ADS-B Reporting . 29
5.1.4 ADS-B Procedures . 29
5.1.5 CTRL Parameters . 31
5.1.5.1 Directory of Service (DOS) message . 31
5.1.5.2 Channel Management Parameter . 32
5.1.6 Definitions for Compact Position Reporting . 42
5.1.6.1 Information Field Offset Encoding . 42
5.1.6.2 Information Field Offset Decoding . 44
5.1.6.3 Patch ID Encoding . 45
5.1.6.4 Patch Id Decoding . 45
5.1.7 Encoding of UDATA (udid) . 46
5.2 Requirements for TIS-B . 46
5.2.1 Traffic Information Volume (TIV) . 46
5.2.2 Void . 47
5.2.3 Message format . 47
5.2.4 Management message . 48
5.2.5 Aircraft target messages (airborne TIV) . 49
5.2.6 Aircraft target messages (ground TIV) . 51
5.2.7 Ground vehicle target messages (ground TIV) . 52
5.2.8 TIS-B offset encoding . 53
5.3 Requirements for FIS-B . 56
5.3.1 Message format for received FIS-B messages . 56
5.3.2 Meteorological Aerodrome Report (METAR) message . 57
5.3.3 Special Observations and Reports (SPECI) message . 64
ETSI

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4 ETSI EN 302 842-3 V1.4.0 (2014-12)
5.3.4 Automatic Terminal Information Service (ATIS) message . 65
5.3.5 Runway Condition (RCN) message . 67
5.3.6 SIGnificant METeorological Information (SIGMET) message . 71
5.3.7 Temporary Segregated Areas (TSA) message . 72
5.3.8 FIS-B report request message . 75
5.3.9 Void . 76
5.3.9a Airborne system functions . 76
5.3.9a.1 Transmission of requests . 76
5.3.9a.2 Differentiation between reports . 76
5.4 Requirements for GNSS Augmentation Service Broadcast (GNS-B) message . 77
5.4.1 Message format . 77
5.4.2 Message Type 1 . 78
5.4.3 Message Type 2 . 81
5.4.4 Message Type 4 . 84
5.4.5 CRC Calculation . 90
5.4.5.1 GNS-B CRC . 90
5.4.5.2 FAS CRC . 90
5.4.5.3 Ephemeris CRC . 91
6 General design requirements . 91
7 Protocol test procedures . 91
7.1 General . 91
7.2 Required test rig . 92
7.3 Protocol test-suite description methodology . 92
7.4 Detailed protocol test procedures . 92
7.4.1 Test-suite overview . 92
7.4.2 Declarations . 95
7.4.3 Constraints . 96
7.4.3.1 Abbreviations . 96
7.4.3.1.1 Subfield mnemonics . 96
7.4.3.1.2 Station addresses and positions . 99
7.4.3.1.3 Tables of values for use in CPR test cases . 100
7.4.3.1.4 Tables of values for use in content checking test cases . 110
7.4.3.1.5 VDL4 Burst formats . 144
7.4.3.2 Test cases . 179
7.4.3.2.1 Test case macros . 180
7.4.3.2.2 Test case descriptions . 181
Annex A (informative): Cross reference matrix . 260
Annex B (informative): Bibliography . 270
History . 272

ETSI

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5 ETSI EN 302 842-3 V1.4.0 (2014-12)
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://ipr.etsi.org).
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 draft European Standard (EN) has been produced by ETSI Technical Committee Aeronautics (AERO).
The present document is part 3 of a multi-part deliverable covering the VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne)
equipment, as identified below:
Part 1: "Physical layer";
Part 2: "General description and data link layer";
Part 3: "Additional broadcast aspects";
Part 4: "Point-to-point functions".
The present document is accompanied by an equivalent ground-based standard, ETSI EN 301 842 [i.7] parts 1 to 5,
covering the VHF air-ground Data Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground-based equipment.
NOTE: Minimum Operational Performance Specifications (MOPS) are also being developed for VDL Mode 4.
EUROCAE have previously published Interim MOPS for VDL Mode 4 [i.6] which are a sub set of ETSI
EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present document) and ETSI
EN 302 842-4 [3]. ETSI EN 302 842-1 [1], ETSI EN 302 842-2 [2], ETSI EN 302 842-3 (the present
document) and ETSI EN 302 842-4 [3] comply with the requirements of CEC Mandate M/318 [i.8].

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 18 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "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

---------------------- Page: 5 ----------------------
6 ETSI EN 302 842-3 V1.4.0 (2014-12)
Introduction
The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4
aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications
operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel
spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO
VDL SARPs [i.2].
The present document may be used to produce tests for the assessment of the performance of the equipment. The
performance of the equipment submitted for type testing should be representative of the performance of the
corresponding production model.
The present document has been written on the assumption that:
• the type test measurements will be performed only once, in an accredited test laboratory and the measurements
accepted by the various authorities in order to grant type approval;
• if equipment available on the market is required to be checked it will be tested in accordance with the methods
of measurement specified in the present document or a documented alternative approved by the certifying
authority;
• equipment complies with ETSI EN 302 842-1 [1] and ETSI EN 302 842-2 [2].
NOTE: The present document has been produced with a view to maintaining consistency of numbering with the
equivalent standard for ground equipment (ETSI EN 301 842 [i.7] parts 1 to 4). Where requirements are
the same, they have been given the same number. Some new airborne requirements have been inserted
between requirements that were sequential in ETSI EN 301 842 [i.7] parts 1 to 4. This has led to a
non-standard form of numbering for new requirements in some places.
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7 ETSI EN 302 842-3 V1.4.0 (2014-12)
1 Scope
The present document applies to the following radio equipment types:
• Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters,
transceivers and receivers for air-ground and air-air communications operating in the VHF band, using
Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of
tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VDL
SARPs [i.2].
The present document provides part 3 of the technical specifications.
The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO
VDL SARPs [i.2] and ICAO VDL4 Technical Manual [i.1].
Manufacturers should note that in future the tuning range for the transmitter and the receiver may also cover any 25 kHz
channel from 108,000 MHz to 111,975 MHz.
The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which
will hereinafter be referred to as "mobile" equipment.
The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is
ETSI EN 301 842 [i.7].
A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications
(see ETSI EN 302 842-2 [2], clause 1).
ETSI EN 302 842-1 [1] deals with tests of the physical layer. ETSI EN 302 842-2 [2] deals with tests of the link layer
sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to
transmissions associated with point-to-point communication. The present document provides technical specifications
for a VDL Mode 4 mobile transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B)
capability and, optionally, the additional functionality of either, or a combination of, the following services:
• Traffic Information Service-Broadcast (TIS-B);
• Flight Information Service-Broadcast (FIS-B);
• GNSS Augmentation Service-Broadcast (GNS-B).
The TIS-B, FIS-B, or GNS-B reception processing functionality in the airborne equipment is expected to be provided
by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also
be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B message reception, the minimum
functionality demanded of a basic VDL Mode 4 airborne transceiver unit (i.e. one that does not have a TIS-B, FIS-B or
GNS-B processor housed within it) is to pass to the TIS-B, FIS-B or GNS-B processor, all TIS-B, FIS-B or GNS-B
messages received.
As the measured values of equipment performance may be a function of the method of measurement, standard test
conditions and methods of test are recommended in the present document.
The present document is organized as follows:
• clause 2 provides references to relevant documents;
• clause 3 provides general definitions, abbreviations and symbols used;
• clause 4 describes the VDL Mode 4 mobile station functionality to support ADS-B, TIS-B, FIS-B and GNS-B;
• clause 5 provides performance specifications for the VDL Mode 4 mobile station supporting ADS-B, TIS-B,
FIS-B and GNS-B Services;
• clause 6 provides general design requirements;
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8 ETSI EN 302 842-3 V1.4.0 (2014-12)
• clause 7 provides protocol tests which emphasis the ADS-B, TIS-B, FIS-B and GNS-B functions of the
system;
• annex A provides a detailed cross-reference to the relevant requirements contained in ICAO VDL4
Technical Manual [i.1];
• annex B provides a Bibliography.
Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all
aspects of functionality. The approach used is to provide detailed tests for the core functionality to support ADS-B,
FIS-B, TIS-B and GNS-B focusing on the system requirements which, if wrongly implemented, could cause a
deterioration in the service offered by other VDL Mode 4 stations.
Mandating and Recommendation Phrases
a) "Shall":
- The use of the word "Shall" indicates a mandated criterion; i.e. compliance with the particular procedure
or specification is mandatory and no alternative may be applied.
b) "Should":
- The use of the word "Should" (and phrases such as "It is recommended that.", etc.) indicates that though
the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or
criteria may be applied, provided that the manufacturer, installer or tester can provide information or data
to adequately support and justify the alternative.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 302 842-1 (V1.3.0): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 1: Physical layer".
[2] ETSI EN 302 842-2 (V1.4.0): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 2: General description and data link layer".
[3] ETSI EN 302 842-4 (V1.3.0): "VHF air-ground and air-air Digital Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for aeronautical mobile
(airborne) equipment; Part 4: Point-to-point functions".
[4] WMO Publication No. 306: "Manual on Codes Vol 1.1, Part A".
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9 ETSI EN 302 842-3 V1.4.0 (2014-12)
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ICAO Doc 9816 (First Edition 2004): "Manual on VHF Digital Link (VDL) Mode 4 - Part 2:
Detailed Technical Specifications".
[i.2] ICAO Annex 10 to the Convention on International Civil Aviation: "Aeronautical
Telecommunications, Volume III: Communication Systems, Part I: Digital Data Communication
Systems, chapter 6", including Amendment 88 (applicable 14/11/13).
[i.3] RTCA DO-242A: "Minimum Aviation System Performance Standards for Automatic Dependent
Surveillance Broadcast (ADS-B)".
[i.4] Amendments 76 and 77 to Volume I of Annex 10 to the Convention on International Civil
Aviation, International Civil Aviation Organization: Appendix B-B2, 3.6 "Ground-based
augmentation system (GBAS)".
NOTE: http://www.icao.int.
[i.5] EUROCAE ED-114A: "Minimum Operational Performance Specification for Global Navigation
Satellite Ground Based Augmentation System Ground Equipment to Support Category I
Operations".
NOTE: http://www.eurocae.net.
[i.6] EUROCAE ED-108A: "MOPS for VDL Mode 4 Aircraft Transceiver for ADS-B", July 2001.
[i.7] ETSI EN 301 842 (all parts): "VHF air-ground Digital Link (VDL) Mode 4 radio equipment;
Technical characteristics and methods of measurement for ground-based equipment.".
[i.8] CEC Mandate M/318: "Mandate to CEN/CENELEC/ETSI for standardisation in the field of air
traffic management systems and Galileo local components".
3 Definitions and abbreviations
3.1 Definitions
3.1.1 Basic reference model definitions
See ETSI EN 302 842-2 [2], clause 3.1.1.
3.1.2 Service conventions definitions
See ETSI EN 302 842-2 [2], clause 3.1.2.
3.1.3 General definitions
For the purposes of the pres
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