SIST EN 301 842-2 V1.5.1:2007
(Main)Electromagnetic compatibility and Radio spectrum Matters (ERM); 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
General Information
- Abstract
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) [14]. 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 VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [14] and VDL Mode 4 Technical Manual (TM) [1] and with the SES 552/2004 interoperability Regulation [16]. 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 [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) [8] 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) [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 [4] 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 [9]. Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in EN 301 842-4 [10]. EN 301 842-4 [10] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ATN SARPs [8].
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.
- Status
- Published
- Publication Date
- 31-Jan-2007
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Feb-2007
- Due Date
- 01-Feb-2007
- Completion Date
- 01-Feb-2007
- Mandate
- M/239
Overview
SIST EN 301 842-2 V1.5.1:2007 is a European and Slovenian standard defining the general description and data link layer requirements for Very High Frequency (VHF) air-ground Digital Link (VDL) Mode 4 ground-based radio equipment. This standard is integral to ensuring electromagnetic compatibility and managing radio spectrum allocation for VHF aeronautical communications. Its specifications apply to VDL Mode 4 ground transmitters and receivers that operate in the VHF band using Gaussian-filtered Frequency Shift Keying (GFSK) modulation and 25 kHz channel spacing, following International Civil Aviation Organization (ICAO) VDL Standards and Recommended Practices (SARPs).
The document forms Part 2 of the complete technical specification, with its focus on the data link layer and general system description. Compliance ensures ground equipment interoperability within the Aeronautical Telecommunication Network (ATN) ecosystem and with related aviation communication and surveillance services.
Key Topics
Scope and Applicability:
- Applicable solely to ground-based VDL Mode 4 radio equipment (not airborne units).
- Supports VHF channels between 118,000 MHz and 136,975 MHz, with potential for future expansion.
- Ensures compatibility with ICAO VDL Mode 4 SARPs and SES interoperability regulations.
Data Link Layer Specifications:
- Defines link layer (OSI model) requirements, supporting air-ground and air-air data communication.
- Allows for broadcast and point-to-point communication services.
- Addresses slot management, media access control, packet structure, and error management.
Communication Capabilities:
- Broadcast services such as Automatic Dependent Surveillance–Broadcast (ADS-B), Traffic Information Service–Broadcast (TIS-B), Flight Information Service–Broadcast (FIS-B).
- Point-to-point messaging and mobile (air/ground) communication.
- Direct operation without the need for continuous ground infrastructure.
Testing and Performance Verification:
- Specifies standard methods for equipment performance measurement.
- Outlines protocol test procedures, equipment configuration, and test-suite methodologies.
Applications
Aeronautical Communication Infrastructure:
Ground stations following this standard are key nodes in air traffic management networks, supporting reliable, standardized digital communications with aircraft.Air Traffic Surveillance and Safety Services:
Enables critical broadcast and information services (ADS-B, TIS-B, FIS-B), which are essential for real-time aircraft position reporting, situational awareness, and safe flight operations.Interoperability within the ATN:
Compliance with SIST EN 301 842-2 helps ground equipment seamlessly integrate with the broader Aeronautical Telecommunication Network, facilitating data exchange between air and ground entities according to ICAO and European regulations.Flexible Deployment Models:
Supports communication both with and without a fixed ground infrastructure, making it suitable for varying airport and surveillance network sizes and configurations.
Related Standards
EN 301 842-1:
Covers physical layer requirements and associated test procedures for VDL Mode 4 equipment.EN 301 842-3:
Specifies additional requirements for broadcast applications, including the full ADS-B message set.EN 301 842-4:
Addresses detailed requirements and interfaces for point-to-point communications, including connections to the ATN.ICAO VDL SARPs & Technical Manuals:
Provides core international specifications for VHF Digital Link systems.SES Regulation 552/2004:
Establishes regulatory requirements for interoperability of communication systems within European ATM infrastructure.
Keywords: VDL Mode 4, VHF air-ground digital link, data link layer, electromagnetic compatibility, radio spectrum, ground-based radio equipment, air traffic management, ICAO SARPs, broadcast services, ATN, ADS-B, aeronautical communication, aeronautical standards.
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Frequently Asked Questions
SIST EN 301 842-2 V1.5.1:2007 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Electromagnetic compatibility and Radio spectrum Matters (ERM); 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". This standard covers: 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) [14]. 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 VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [14] and VDL Mode 4 Technical Manual (TM) [1] and with the SES 552/2004 interoperability Regulation [16]. 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 [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) [8] 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) [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 [4] 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 [9]. Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in EN 301 842-4 [10]. EN 301 842-4 [10] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ATN SARPs [8]. 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 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) [14]. 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 VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [14] and VDL Mode 4 Technical Manual (TM) [1] and with the SES 552/2004 interoperability Regulation [16]. 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 [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) [8] 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) [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 [4] 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 [9]. Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in EN 301 842-4 [10]. EN 301 842-4 [10] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ATN SARPs [8]. 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.
SIST EN 301 842-2 V1.5.1:2007 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 33.100.01 - Electromagnetic compatibility in general; 35.100.20 - Data link layer. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 842-2 V1.5.1:2007 is associated with the following European legislation: Standardization Mandates: M/239. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 301 842-2 V1.5.1:2007 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HKQLþQHElectromagnetic compatibility and Radio spectrum Matters (ERM); 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 layer35.100.20Podatkovni povezovalni slojData link layer33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 842-2 Version 1.5.1SIST EN 301 842-2 V1.5.1:2007en01-februar-2007SIST EN 301 842-2 V1.5.1:2007SLOVENSKI
STANDARD
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 2
Reference REN/ERM-TG25-029-2 Keywords aeronautical, digital, radio, testing, VHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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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 2006. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 301 842-2 V1.5.1:2007
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 3
Contents Intellectual Property Rights.8 Foreword.8 Introduction.9 1 Scope.10 2 References.12 3 Definitions and abbreviations.13 3.1 Definitions.13 3.1.1 Basic reference model definitions.13 3.1.2 Service conventions definitions.13 3.1.3 General definitions.13 3.1.4 Definition of bit order.17 3.2 Abbreviations.17 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.19 4.1.3 VDL Mode 4 services.21 4.1.4 ADS-B Function.21 4.1.5 Operational scenarios.22 4.1.6 VDL Mode 4 fundamentals.22 4.1.7 Possible configuration of ground equipment.23 4.1.8 Overall structure of specifications for VDL Mode 4.24 4.1.9 Equipment performance verification.25 4.2 Ground quarantine.26 4.3 System timing.26 4.4 Net entry.26 4.5 Autotune capability.26 4.6 Autonomous and fixed access.27 5 Minimum performance specification under standard test conditions.27 5.1 MAC sublayer.27 5.1.1 Services.27 5.1.2 MAC sublayer services.27 5.1.3 MAC sublayer parameters.27 5.1.3.1 General.27 5.1.3.2 Parameter M1 (number of slots per superframe).28 5.1.4 Time synchronization.28 5.1.4.1 Primary.28 5.1.4.2 Secondary.28 5.1.4.3 Alignment to UTC second.28 5.1.4.4 Data quality level.28 5.1.5 Slot idle/busy notification.29 5.1.5.1 Slot idle detection.29 5.1.5.2 Slot busy detection.29 5.1.5.3 Slot occupied detection.29 5.1.5.4 Signal level indication.29 5.1.6 Transmission processing.29 5.1.7 Received transmission processing.30 5.2 VSS sublayer.30 5.2.1 Services.30 5.2.1.1 Error detection.30 5.2.1.2 Channel congestion.30 5.2.2 Burst format.31 5.2.2.1 VSS burst structure.31 SIST EN 301 842-2 V1.5.1:2007
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5.2.2.2 Version number.32 5.2.2.3 Source address.32 5.2.2.4 Message ID.32 5.2.2.5 Information field.33 5.2.2.6 Reservation fields.33 5.2.2.7 Autonomous/directed flag.33 5.2.3 VSS sublayer parameters.34 5.2.3.1 General.34 5.2.3.2 Parameter VS1 (number of ground quarantined slots).34 5.2.3.3 Parameter VS2 (minimum CCI performance).35 5.2.3.4 Parameter VS4 (quarantine slot re-use range).35 5.2.3.5 Parameter VS5 (maximum burst length).35 5.2.4 VSS quality of service parameters.35 5.2.4.1 General.35 5.2.4.2 Parameter Q1 (priority).36 5.2.4.3 Parameters Q2a to Q2d (slot selection range constraint for level n).37 5.2.4.4 Parameter Q3 (replace queued data).37 5.2.4.5 Parameter Q4 (number of available slots).38 5.2.5 Received transmission processing.38 5.2.6 Reserved access protocol specification.39 5.2.6.1 Reservation table.39 5.2.6.2 Selecting slots for transmission or reservation.40 5.2.6.3 Reserved transmissions.41 5.2.6.4 Reservation conflicts.42 5.2.7 Random access protocol specification.43 5.2.7.1 General.43 5.2.7.2 Random access parameters.43 5.2.7.3 Random access procedures.44 5.2.8 Fixed access protocol specification.44 5.2.8.1 General.44 5.2.8.2 Recommendation.45 5.2.9 Null reservation protocol specification.45 5.2.9.1 Null reservation burst format.45 5.2.10 Periodic broadcast protocol specification.45 5.2.10.1 Periodic broadcast reservation burst format.45 5.2.10.2 Periodic broadcast timers.46 5.2.10.3 Periodic broadcast parameters.46 5.2.10.4 Periodic broadcast reception procedures.48 5.2.10.5 Periodic broadcast transmission procedures.49 5.2.11 Incremental broadcast protocol specification.51 5.2.11.1 Incremental broadcast reservation burst format.51 5.2.11.2 Incremental broadcast parameters.52 5.2.11.3 Incremental broadcast reception procedures.53 5.2.11.4 Incremental broadcast transmission procedures.53 5.2.12 Combined periodic broadcast and incremental broadcast protocol specification.53 5.2.12.1 Combined periodic broadcast and incremental broadcast reservation burst.53 5.2.13 Big Negative Dither (BND) broadcast protocol specifications.54 5.2.13.1 BND reservation burst format.54 5.2.13.2 BND broadcast parameters.54 5.2.13.3 BND broadcast reception procedures.54 5.2.14 Unicast request protocol specification.55 5.2.14.1 Unicast request reservation burst format.55 5.2.14.1a Unicast request parameters.56 5.2.14.2 Unicast request reception procedures.56 5.2.14.3 Unicast request transmission procedures.57 5.2.15 Information transfer request protocol specification.57 5.2.15.1 Information transfer request reservation burst format.57 5.2.15.2 Information transfer request reception procedures.58 5.2.16 Directed request protocol specification.59 5.2.16.1 Directed request reservation burst format.59 5.2.16.2 Directed request parameters.62 5.2.16.3 Directed request reception procedures.63 SIST EN 301 842-2 V1.5.1:2007
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 5
5.2.16.4 Directed request transmission procedures.64 5.2.17 Block reservation protocols specification.65 5.2.17.1 Superframe block reservation burst format.65 5.2.17.2 Second frame block reservation burst format.66 5.2.17.3 Superframe block reservation parameters.67 5.2.17.4 Superframe block reservation reception procedures.67 5.2.17.5 Second frame block reservation parameters.68 5.2.17.6 Second frame block reservation reception procedures.68 5.2.17.7 Superframe block reservation transmission procedures.69 5.2.17.8 Second frame block reservation transmission procedures.69 5.2.18 Response protocol specification.70 5.2.18.1 Response burst format.70 5.2.19 General request protocol specification.70 5.2.19.1 General request burst format.70 5.2.19.2 General request procedures.71 5.2.20 General response protocol specification.71 5.2.20.1 General response burst format.71 5.2.20.2 General response procedures.73 5.2.21 Retransmission procedures.73 5.3 DLS sublayer.74 5.3.1 Services.74 5.3.1.1 General.74 5.3.1.2 Data transfer.74 5.3.1.3 Station address encoding.74 5.3.1.4 DLS burst formats.75 5.3.2 DLS system parameters.76 5.3.2.1 Parameter ND4 (maximum length of a UDATA burst).77 5.3.3 DLS procedures.77 5.3.3.1 Broadcast.77 5.3.3.2 DLS not supported.77 5.3.3.3 User data packet reception.77 5.4 Link Management Entity sublayer.77 5.4.1 Services.77 5.4.2 Synchronization burst format.78 5.4.2.1 General.78 5.4.2.2 Fixed and variable data fields.78 5.4.2.3 Fixed data field format.78 5.4.2.4 Variable data field format.82 5.4.2.5 Synchronization burst request.82 5.4.2.6 Link management burst.82 5.4.3 Control (CTRL) parameter formats.83 5.4.3.1 Encoding.83 5.4.3.2 VDL Mode 4 parameter identification.83 5.4.3.3 Ground-initiated modification parameters.83 5.4.3.4 Ground-initiated information parameters.86 5.4.3a LME timers and parameters.89 5.4.3a.1 General.89 5.4.3a.2 Counter L1 (maximum number of missed reservations) and Timer TL3 (inter-miss timer).90 5.4.4 LME procedures.90 5.4.4.1 Synchronization burst procedures.90 5.4.4.2 Peer Entity Contact Table (PECT).92 5.4.4.3 Network entry protocol specifications.92 5.4.5 Additional material for ADS-B applications.93 5.4.5.1 Information field formats.93 5.4.5.2 ADS-B request format.93 5.5 Additional requirements for ground stations.94 5.5.1 System timing requirements.94 5.5.1.1 Maintenance of Primary time.94 5.5.2 Ground station interface requirements.94 5.5.2.1 Ground station coordination.94 5.5.2.2 Network timing requirements.94 5.5.2.3 Application interface requirements.95 SIST EN 301 842-2 V1.5.1:2007
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 6
5.5.2.4 Transmission control requirements.95 5.5.2.5 Superframe block reservation rebroadcast procedures.95 5.5.2.6 Fixed transmission parameters.96 5.5.2.7 Protection of fixed access protocol transmissions by ground quarantine.96 5.5.2.8 Protection of fixed access protocol transmissions by use of appropriate reservation protocols.96 5.5.2.9 Restriction of autotune reservations.96 5.5.2.10 Transmission time for autotune reservations.96 5.5.2.11 Reporting of channel usage.97 5.6 Definitions for compact position reporting.97 5.6.1 Introduction.97 5.6.2 Parameter symbols, data types, constants and variables.97 5.6.2.1 Parameter symbols.97 5.6.2.2 Data types.97 5.6.2.3 Constants.97 5.6.2.4 Variables.98 5.6.2.5 Functions.99 5.6.2.6 Patch constants.100 5.6.3 Fixed data field position encoding.102 5.6.3.1 General.102 5.6.3.2 Input parameters.102 5.6.3.3 Calculations.102 5.6.4 Fixed data field position local decoding.103 5.6.4.1 General.103 5.6.4.2 Input parameters.103 5.6.4.3 Calculations.103 5.6.5 Fixed data field position global decoding.104 5.6.5.1 General.104 5.6.5.2 Input parameters.104 5.6.5.3 Transition level straddling.105 5.6.5.4 Calculations.105 5.6.6 Position report processing.105 5.6.6.1 Services.105 5.6.6.2 Position report parameters.105 5.6.6.3 Position report processing procedures.106 6 General design requirements.109 6.1 Controls and indicators.109 6.2 Operation of controls.109 6.3 Warm up.109 6.4 Effects of tests.109 6.5 Software management.109 6.6 Recovery from failure.109 6.6.1 Failure of the VDL equipment.109 6.7 Monitoring of proper operation.109 7 Protocol test procedures.110 7.1 General.110 7.1.1 Input voltage.110 7.1.2 Power input frequency.110 7.1.3 Adjustment of equipment.110 7.1.4 Equipment configuration.110 7.1.5 Test equipment.110 7.1.6 Test equipment precautions.110 7.1.7 Ambient conditions.111 7.1.8 Connected loads.111 7.1.9 Warm-up period.111 7.2 Required test rig.111 7.3 Protocol test-suite description methodology.113 7.4 Detailed protocol test procedures.113 7.4.1 Test-suite overview.113 7.4.2 Declarations.118 7.4.3 Constraints.118 SIST EN 301 842-2 V1.5.1:2007
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 7
7.4.3.1 Abbreviations.118 7.4.3.1.1 Subfield mnemonics.118 7.4.3.1.2 Special characters used in the subfield definitions.119 7.4.3.1.3 Station addresses and positions.119 7.4.3.1.4 Tables of values for use in CPR test cases.121 7.4.3.1.5 Tables of values for use in content checking test cases.131 7.4.3.1.6 VDL4 burst formats.134 7.4.3.2 Test cases.152 7.4.3.2.1 Test case macros.152 7.4.3.2.2 Test case descriptions.154 Annex A (informative): Cross reference matrix.325 Annex B (informative): Description of ISO/IEC 9646 Test Methodology.341 B.1 Overview of the structure of the ISO/IEC 9646 [7] Test-Suites.341 B.2 Test case description.341 B.3 Queue action.343 B.4 Repeat construct.343 B.5 Macro definitions.344 B.6 Test case naming.344 Annex C (informative): Bibliography.345 History.351
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 8
Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document is part 2 of a multi-part deliverable covering the VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment, as identified below: Part 1: "EN for ground equipment"; Part 2: "General description and data link layer"; Part 3: "Additional broadcast aspects"; Part 4: "Point-to-point functions"; Part 5: "VDL 4 ground-based equipment compliance with the SES 552/2004 interoperability Regulation"; Part 6: "Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive". The present document is accompanied by an equivalent airborne standard, EN 302 842 [13] parts 1 to 5, covering the VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for airborne equipment.
National transposition dates Date of adoption of this EN: 24 November 2006 Date of latest announcement of this EN (doa): 28 February 2007 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 August 2007 Date of withdrawal of any conflicting National Standard (dow): 31 August 2007
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 9
Introduction The present document is part of a set of standards developed by ETSI a
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