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
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
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.
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - 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
General Information
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
SIST EN 301 842-2 V1.5.1:2007
ETSI EN 301 842-2 V1.5.1 (2006-11)European Standard (Telecommunications series) Electromagnetic compatibilityand Radio spectrum Matters (ERM);VHF air-ground Digital Link (VDL) Mode 4 radio equipment;Technical characteristics and methods of measurementfor ground-based equipment;Part 2: General description and data link layer
SIST EN 301 842-2 V1.5.1:2007
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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© 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
ETSI ETSI EN 301 842-2 V1.5.1 (2006-11) 4
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.
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