VHF air-ground Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 2: General description and data link layer

The present document applies to the following radio equipment types:
Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground 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 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [i.4].
The present document provides part 2 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.4] and ICAO VDL4 Technical Manual [i.1].
Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 117,975 MHz.
The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is EN 302 842 [10], [11], [12] and [13].
The VDL Mode 4 system provides data communication exchanges between aircraft and ground based systems supporting surveillance and communication applications. The supported modes of communication include:
broadcast and point-to-point communication;
broadcast services including Automatic Dependent Surveillance-Broadcast (ADS-B), Traffic Information Service-Broadcast (TIS-B) and Flight Information Service-Broadcast (FIS-B) capabilities;
air-to-air, air-to-ground, ground-to-air and ground mobile services;
operation without ground infrastructure.
VDL Mode 4 is designed to be an Air/Ground subsystem of the Aeronautical Telecommunication Network (ATN) [i.2] using the AM(R)S band and it is organized according to the Open Systems Interconnection (OSI) model (defined by ISO). It provides reliable sub network services to the ATN system. Other networks can also be supported but these have not been focussed on in the present document.
The present document specifies functional specifications of VHF communication ground station equipment intended to be used for air-ground and air-air data communications. The present document is derived from the standards and specifications in:
VDL Mode 4 standards produced under the auspices of the International Civil Aviation
Organization (ICAO) [i.1].
Other relevant standards as defined in clause 2.
It is envisaged that manufacturers may provide equipment supporting:
broadcast services only;
point-to-point services only;
both broadcast and point-to-point services.
EN 301 842-1 [3] deals with tests of the physical layer. The present document defines the core link layer requirements for the VDL Mode 4 ground station necessary to support all types of equipment. This includes a simple position broadcast functionality.
The present document deals with tests of the link layer sufficient to support core link layer functionality, and it also includes requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document does not address requirements for the full ADS-B message set, or for other broadcast applications that can be supported by the VDL Mode 4 equipment. These are covered by EN 301 842-3 [7].
Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in EN 301 842-4 [8]. EN 301 842-4 [8] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ATN SARPs [i.2].
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.

Radijska oprema za VHF podatkovno povezavo zrak-tla, 4. način - Tehnične karakteristike in merilne metode za talno opremo - 2. del: Splošni opis in plast podatkovnih povezav

Ta dokument velja za naslednje vrste radijske opreme:
 zelo visokofrekvenčna (VHF) digitalna povezava (VDL), 4. način, talnih radijskih oddajnikov in prejemnikov za komunikacije zrak-tla, ki deluje v pasu VHF z uporabo modulacije frekvenčnega premičnega kodiranja prek filtra Gaussian (GFSK) z razmikom 25 kHz med kanali in zmožna uravnavati na katerem koli izmed kanalov 25 kHz od 118.000 MHz do 136.975 MHz, kot je opredeljeno v standardih in priporočenih praksah (SARPs) [i.4] za digitalne povezave IACO (VDL).
Ta dokument zagotavlja 2. del tehničnih specifikacij.
Ta dokument zagotavlja, da bo oprema, ki jo certificira, združljiva z ustreznimi SARPs za ICAO VDL [i.4] in tehničnim priročnikom ICAO za VDL4 [i.1].
Proizvajalci morajo biti pozorni, da razpon uravnavanja za talne prejemnike-oddajnike lahko v prihodnje zajema tudi kateri koli kanal 25 kHz od 108.000 MHz do 117.975 MHz.
Področje uporabe tega dokumenta je omejeno na talne postaje. Ustrezna specifikacija za letalske postaje je v EN 302 842 [10], [11], [12] in [13].
Sistem VDL, 4. način, zagotavlja podatkovno komunikacijsko izmenjavo med zračnim plovilom in talnim sistemom, ki podpirata nadzor in komunikacije. Podporni načini komunikacije vključujejo:
 oddajanje in komunikacijo tipa točka-točka;
 storitve oddajanja, vključno z zmožnostmi samodejnega odvisnega nadzora - oddajanje (ADS-B), storitve prometnih informacij - oddajanje (TIS-B) in storitve informacij o letih – oddajanje (FIS-B);
 mobilne storitve zrak-zrak, zrak-tla in tla-zrak in tla;
 delovanje brez talne infrastrukture.
VDL 4. način je načrtovan kot podsistem aeronavtičnega telekomunikacijskega omrežja zrak/tla (ATN) [i.2] ter uporablja pas AM(R)S in je organiziran v skladu z modelom povezanih odprtih sistemov (OSI) (določen z ISO). Zagotavlja zanesljive podomrežne storitve sistemu ATN. Druga omrežja so prav tako lahko podprta, vendar se ta dokument na njih ne osredotoča.
Ta dokument določa funkcionalne specifikacije komunikacijske opreme VHF za talno postajo, namenjene uporabi v podatkovnih komunikacijah zrak-tla in zrak-zrak. Ta dokument je izpeljan iz naslednjih standardov in specifikacij:
 Standardov VDL, 4. način, izdelanih pod okriljem Mednarodne organizacije za civilno letalstvo
(ICAO) [i.1].
 Drugih ustreznih standardov, kot je opredeljeno v točki 2.
Predvideva se, da proizvajalec lahko zagotovi opremo, ki podpira:
 samo storitve oddajanja;
 samo storitve točka-točka;
 storitve oddajanja in storitve točka-točka.

General Information

Status
Published
Public Enquiry End Date
28-Feb-2011
Publication Date
16-Oct-2011
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Oct-2011
Due Date
09-Dec-2011
Completion Date
17-Oct-2011

Buy Standard

Standard
EN 301 842-2 V1.6.1:2011
English language
326 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HKQLþQHVHF air-ground Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 2: General description and data link layer49.090On-board equipment and instruments35.100.20Podatkovni povezovalni slojData link layer33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 842-2 Version 1.6.1SIST EN 301 842-2 V1.6.1:2011en01-november-2011SIST EN 301 842-2 V1.6.1:2011SLOVENSKI
STANDARD



SIST EN 301 842-2 V1.6.1:2011



ETSI EN 301 842-2 V1.6.1 (2011-09) VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 2: General description and data link layer
European Standard SIST EN 301 842-2 V1.6.1:2011



ETSI ETSI EN 301 842-2 V1.6.1 (2011-09)2
Reference REN/AERO-00006-2 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 Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the 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: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2011. 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 301 842-2 V1.6.1:2011



ETSI ETSI EN 301 842-2 V1.6.1 (2011-09)3 Contents Intellectual Property Rights . 8 Foreword . 8 Introduction . 9 1 Scope . 10 2 References . 12 2.1 Normative references . 12 2.2 Informative references . 13 3 Definitions and abbreviations . 13 3.1 General definitions . 13 3.2 Definition of bit order . 16 3.3 Abbreviations . 16 4 General description of VDL Mode 4 ground station link layer . 18 4.1 General . 18 4.1.1 Overview of VDL Mode 4 . 18 4.1.2 Relationship to OSI reference model . 18 4.1.3 VDL Mode 4 services . 20 4.1.4 ADS-B Function . 20 4.1.5 Operational scenarios . 21 4.1.6 VDL Mode 4 fundamentals . 21 4.1.7 Possible configuration of ground equipment . 22 4.1.8 Overall structure of specifications for VDL Mode 4 . 22 4.1.9 Equipment performance verification . 24 4.2 Ground quarantine . 25 4.3 System timing . 25 4.4 Net entry . 25 4.5 Autotune capability . 25 4.6 Autonomous and fixed access . 26 5 Minimum performance specification under standard test conditions . 26 5.1 MAC sublayer . 26 5.1.1 Services . 26 5.1.2 MAC sublayer services . 26 5.1.3 MAC sublayer parameters . 26 5.1.3.1 General . 26 5.1.3.2 Parameter M1 (number of slots per superframe) . 27 5.1.4 Time synchronization . 27 5.1.4.1 Primary . 27 5.1.4.2 Secondary . 27 5.1.4.3 Alignment to UTC second . 27 5.1.4.4 Data quality level . 27 5.1.5 Slot idle/busy notification . 28 5.1.5.1 Slot idle detection . 28 5.1.5.2 Slot busy detection . 28 5.1.5.3 Slot occupied detection . 28 5.1.5.4 Signal level indication . 28 5.1.6 Transmission processing . 28 5.1.7 Received transmission processing . 28 5.2 VSS sublayer . 29 5.2.1 Services . 29 5.2.1.1 Error detection . 29 5.2.1.2 Channel congestion . 29 5.2.2 Burst format . 29 5.2.2.1 VSS burst structure . 29 5.2.2.2 Version number . 30 SIST EN 301 842-2 V1.6.1:2011



ETSI ETSI EN 301 842-2 V1.6.1 (2011-09)4 5.2.2.3 Source address . 30 5.2.2.4 Message ID . 30 5.2.2.5 Information field . 31 5.2.2.6 Reservation fields . 31 5.2.2.7 Autonomous/directed flag . 32 5.2.3 VSS sublayer parameters . 32 5.2.3.1 General . 32 5.2.3.2 Parameter VS1 (number of ground quarantined slots) . 33 5.2.3.3 Parameter VS2 (minimum CCI performance) . 33 5.2.3.4 Parameter VS4 (quarantine slot re-use range) . 33 5.2.3.5 Parameter VS5 (maximum burst length) . 34 5.2.4 VSS quality of service parameters . 34 5.2.4.1 General . 34 5.2.4.2 Parameter Q1 (priority) . 34 5.2.4.3 Parameters Q2a to Q2d (slot selection range constraint for level n) . 35 5.2.4.4 Parameter Q3 (replace queued data) . 36 5.2.4.5 Parameter Q4 (number of available slots) . 36 5.2.5 Received transmission processing . 37 5.2.6 Reserved access protocol specification . 37 5.2.6.1 Reservation table . 37 5.2.6.2 Selecting slots for transmission or reservation . 38 5.2.6.3 Reserved transmissions . 39 5.2.6.4 Reservation conflicts . 40 5.2.7 Random access protocol specification . 41 5.2.7.1 General . 41 5.2.7.2 Random access parameters. 41 5.2.7.3 Random access procedures. 42 5.2.8 Fixed access protocol specification . 42 5.2.8.1 General . 42 5.2.8.2 Recommendation . 43 5.2.9 Null reservation protocol specification . 43 5.2.9.1 Null reservation burst format . 43 5.2.10 Periodic broadcast protocol specification . 43 5.2.10.1 Periodic broadcast reservation burst format . 43 5.2.10.2 Periodic broadcast timers . 44 5.2.10.3 Periodic broadcast parameters . 44 5.2.10.4 Periodic broadcast reception procedures . 46 5.2.10.5 Periodic broadcast transmission procedures . 47 5.2.11 Incremental broadcast protocol specification . 49 5.2.11.1 Incremental broadcast reservation burst format . 49 5.2.11.2 Incremental broadcast parameters . 50 5.2.11.3 Incremental broadcast reception procedures . 51 5.2.11.4 Incremental broadcast transmission procedures . 51 5.2.12 Combined periodic broadcast and incremental broadcast protocol specification . 51 5.2.12.1 Combined periodic broadcast and incremental broadcast reservation burst. 51 5.2.13 Big Negative Dither (BND) broadcast protocol specifications . 52 5.2.13.1 BND reservation burst format . 52 5.2.13.2 BND broadcast parameters. 52 5.2.13.3 BND broadcast reception procedures . 52 5.2.14 Unicast request protocol specification . 53 5.2.14.1 Unicast request reservation burst format . 53 5.2.14.1a Unicast request parameters. 54 5.2.14.2 Unicast request reception procedures . 54 5.2.14.3 Unicast request transmission procedures . 55 5.2.15 Information transfer request protocol specification . 55 5.2.15.1 Information transfer request reservation burst format . 55 5.2.15.2 Information transfer request reception procedures . 56 5.2.16 Directed request protocol specification. 57 5.2.16.1 Directed request reservation burst format . 57 5.2.16.2 Directed request parameters . 60 5.2.16.3 Directed request reception procedures . 61 5.2.16.4 Directed request transmission procedures . 62 SIST EN 301 842-2 V1.6.1:2011



ETSI ETSI EN 301 842-2 V1.6.1 (2011-09)5 5.2.17 Block reservation protocols specification . 63 5.2.17.1 Superframe block reservation burst format . 63 5.2.17.2 Second frame block reservation burst format . 64 5.2.17.3 Superframe block reservation parameters . 65 5.2.17.4 Superframe block reservation reception procedures . 65 5.2.17.5 Second frame block reservation parameters . 66 5.2.17.6 Second frame block reservation reception procedures . 66 5.2.17.7 Superframe block reservation transmission procedures . 67 5.2.17.8 Second frame block reservation transmission procedures . 67 5.2.18 Response protocol specification . 68 5.2.18.1 Response burst format . 68 5.2.19 General request protocol specification . 68 5.2.19.1 General request burst format . 68 5.2.19.2 General request procedures . 69 5.2.20 General response protocol specification . 69 5.2.20.1 General response burst format. 69 5.2.20.2 General response procedures . 71 5.2.21 Retransmission procedures . 71 5.3 DLS sublayer . 72 5.3.1 Services . 72 5.3.1.1 General . 72 5.3.1.2 Data transfer . 72 5.3.1.3 Station address encoding . 72 5.3.1.4 DLS burst formats . 73 5.3.2 DLS system parameters . 74 5.3.2.1 Parameter ND4 (maximum length of a UDATA burst) . 75 5.3.3 DLS procedures . 75 5.3.3.1 Broadcast . 75 5.3.3.2 DLS not supported . 75 5.3.3.3 User data packet reception . 75 5.4 Link Management Entity sublayer . 75 5.4.1 Services . 75 5.4.2 Synchronization burst format . 76 5.4.2.1 General . 76 5.4.2.2 Fixed and variable data fields. 76 5.4.2.3 Fixed data field format . 76 5.4.2.4 Variable data field format . 80 5.4.2.5 Synchronization burst request . 80 5.4.2.6 Link management burst . 80 5.4.3 Control (CTRL) parameter formats . 81 5.4.3.1 Encoding . 81 5.4.3.2 VDL Mode 4 parameter identification . 81 5.4.3.3 Ground-initiated modification parameters . 81 5.4.3.4 Ground-initiated information parameters . 84 5.4.3a LME timers and parameters . 87 5.4.3a.1 General . 87 5.4.3a.2 Counter L1 (maximum number of missed reservations) and Timer TL3 (inter miss timer) . 88 5.4.4 LME procedures . 88 5.4.4.1 Synchronization burst procedures . 88 5.4.4.2 Peer Entity Contact Table (PECT) . 90 5.4.4.3 Network entry protocol specifications . 90 5.4.5 Additional material for ADS-B applications . 91 5.4.5.1 Information field formats . 91 5.4.5.2 ADS-B request format. 91 5.5 Additional requirements for ground stations . 92 5.5.1 System timing requirements . 92 5.5.1.1 Maintenance of Primary time . 92 5.5.2 Ground station interface requirements . 92 5.5.2.1 Ground station coordination . 92 5.5.2.2 Network timing requirements. 92 5.5.2
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.