CONTENTS

Recommendation ITU-R M.2092-2
INTELLECTUAL PROPERTY RIGHTS
Annex 1  General description of the VHF data exchange system operating system
A1-1 General description of VHF data exchange system
A1-2 Key technical characteristics
     A1-2.1 Satellite downlink
     A1-2.2 VHF data exchange-terrestrial may operate in either duplex or simplex mode
     A1-2.3 VHF data exchange system channel usage in accordance with Appendix 18 of the Radio Regulations
     A1-2.4 Identification
                  A1-2.4.1 Station identification
                  A1-2.4.2 Source and destination identification
     A1-2.5 Presentation interface protocol
     A1-2.6 VHF data exchange system communications prioritization
     A1-2.7 Simplified VHF data exchange system
Annex 2  Common technical elements of VHF data exchange system
A2-1 Protocol layer
     A2-1.1 Protocol layer overview
     A2-1.2 Physical layer
                  A2-1.2.1 Transmission accuracy figures
                  A2-1.2.2 Frame structure
                  A2-1.2.3 Burst transmission structure
                  A2-1.2.4 Forward error correction
                  A2-1.2.5 Cyclic redundancy check
                  A2-1.2.6 Bit scrambling
                  A2-1.2.7 Modulation coding schemes
                  A2-1.2.8 Channel quality indicator
                  A2-1.2.9 Bit mapping
                  A2-1.2.10 Antenna gain for VHF data exchange system ship stations
                  A2-1.2.11 Noise and interference level
                  A2-1.2.12 Transmitter requirements for VHF data exchange system
     A2-1.3 Link layer
                  A2-1.3.1 Time division multiple access synchronization
                  A2-1.3.2 Coordinated universal time direct
                  A2-1.3.3 Coordinated universal time indirect
Annex 3  Technical characteristics of the application specific message  channels for the VHF data exchange system in the VHF maritime band
A3-1 Introduction
A3-2 Open systems interconnection layers
     A3-2.1 Physical layer
     A3-2.2 Link layer
                  A3-2.2.1 Link management entity
                  A3-2.2.2 Data link services
                  A3-2.2.3 Media access control
     A3-2.3 Network layer
     A3-2.4 Transport layer
A3-3 Physical layer
     A3-3.1 Parameters
                  A3-3.1.1 General
                  A3-3.1.2 Transmission media
                  A3-3.1.3 Multi-channel operation
     A3-3.2 Transceiver characteristics
     A3-3.3 Modulation scheme
     A3-3.4 Data transmission bit rate
     A3-3.5 Frame structure
     A3-3.6 Signal information
     A3-3.7 Forward error correction and bit scrambling
     A3-3.8 Transmitter transient response
     A3-3.9 Transmitter power
A3-4 Link layer
     A3-4.1 Sub-layer 1 – medium access control
     A3-4.2 TDMA synchronization
     A3-4.3 Time division
                  A3-4.3.1 Slot phase and frame synchronization
                  A3-4.3.2 Slot phase synchronization
                  A3-4.3.3 Frame synchronization
                  A3-4.3.4 Slot identification
                  4.3.5 Slot access
                  A3-4.3.6 Slot state
     A3-4.4 Sub-layer 2 – data link service
                  A3-4.4.1 Data link activation and release
                  A3-4.4.2 Data transfer
                  A3-4.4.3 Packet format
                  A3-4.4.4 Error detection and control
                  A3-4.4.5 Forward error correction
     A3-4.5 Sub layer 3 – link management entity
                  A3-4.5.1 Access to the data link
                  A3-4.5.2 Cooperation on the data link
                  A3-4.5.3 Candidate slots
                  A3-4.5.4 Modes of operation
                  A3-4.5.5 Autonomous
                  A3-4.5.6 Designated
                  A3-4.5.7 Channel access schemes
                  A3-4.5.8 Message structure
A3-5 Network layer
     A3-5.1 Multi-channel operations
     A3-5.2 Management of priority assignment for messages
     A3-5.3 Data link congestion prevention
                  A3-5.3.1 Mandatory quiet times
A3-6 Transport layer
     A3-6.1 Definition of transmission packet
     A3-6.2 Application specific message identifier
     A3-6.3 Transmission packets
                  A3-6.3.1 Addressed messages
                  A3-6.3.2 Broadcast messages
                  A3-6.3.3 Conversion to presentation interface messages
                  A3-6.3.4 Conversion of data into transmission packets
     A3-6.4 Multiple incremental time division multiple access
                  A3-6.4.1 Multiple incremental time division multiple access example
     A3-6.5 Message retransmission
                  A3-6.5.1 Scheduled broadcast message retransmission
                  A3-6.5.2 Scheduled addressed message retransmission
A3-7 Packet structure
     A3-7.1 Slot transmission structure
     A3-7.2 Message summary
     A3-7.3 Message 0: broadcast automatic identification system application specific message
     A3-7.4 Message 1: Scheduled broadcast message
     A3-7.5 Message 2: Broadcast message
     A3-7.6 Message 3: Scheduled individual addressed message
     A3-7.7 Message 4: Individual addressed message
     A3-7.8 Message 5: Acknowledgment message
     A3-7.9 Message 6: Geographical multicast message
    A3-7.10 Message 7: ASM data link management message
A3-8 Example of application specific message burst symbol generation
Annex 4  Technical characteristics of VHF data exchange-terrestrial  in the maritime mobile band
A4-1 Introduction
A4-2 Open systems interconnection layer
A4-3 Physical layer
     A4-3.1 Range
     A4-3.2 Transmitter parameter settings
     A4-3.3 Antenna
     A4-3.4 Modulation
                  A4-3.4.1 Waveforms
                  A4-3.4.2 Bit mapping
     A4-3.5 Sensitivity
     A4-3.6 Symbol timing accuracy
     A4-3.7 Transmitter timing jitter
     A4-3.8 Slot transmission accuracy at the output
     A4-3.9 Frame structure
A4-4 Link layer
     A4-4.1 Time division multiple access hierarchy
                  A4-4.1.1 Hexslot
                  A4-4.1.2 Time division multiple access channel
                  A4-4.1.3 Time division multiple access frame
                  A4-4.1.4 Time division multiple access slot
     A4-4.2 Link layer definitions
                  A4-4.2.1 Logical channel
                  A4-4.2.2 Physical channel
                  A4-4.2.3 VHF data exchange slotmap
                  A4-4.2.4 Bulletin board
                  A4-4.2.5 Short data message
                  A4-4.2.6 Data session
                  A4-4.2.7 Data fragment
     A4-4.3 Control station service area
     A4-4.4 Resource management
     A4-4.5 Endianness
     A4-4.6 Data structures
     A4-4.7 Adaptive coding and modulation/rate adaption
     A4-4.8 Slot functions
                  A4-4.8.1 Bulletin board signalling channel
                  A4-4.8.2 Random access channel
                  A4-4.8.3 Announcement signalling channel
                  A4-4.8.4 Data channel
                  A4-4.8.5 Data signalling channel
                  A4-4.8.6 Ranging channel
                  A4-4.8.7 VHF data exchange-terrestrial default slot functions
     A4-4.9 VHF data exchange-terrestrial messages
                  A4-4.9.1 Media access control
                  A4-4.9.2 Resource allocation
                  A4-4.9.3 Acknowledge/NACK
                  A4-4.9.4 Resource request/transmission announcement
                  A4-4.9.5 Short data message (with acknowledgement)
                  A4-4.9.6 Short data message (no acknowledgement)
                  A4-4.9.7 Bulletin board start fragment message
                  A4-4.9.8 Bulletin board continuation fragment message
                  A4-4.9.9 Bulletin board end fragment message
                  A4-4.9.10 Start fragment
                  A4-4.9.11 Continuation fragment
                  A4-4.9.12 End fragment
                  A4-4.9.13 Padding single byte
    A4-4.10  Cyclic redundancy check
    A4-4.11  Acknowledgement
    A4-4.12  Logical channels
    A4-4.13  Terrestrial bulletin board
    A4-4.14  VHF data exchange-terrestrial default physical channel and slotmap
    A4-4.15  Digital signature of messages
    A4-4.16  Data transfer protocols
    A4-4.17  Data session transmission and continuation
    A4-4.18  Data frame retry
    A4-4.19  Giving priority to automatic identification system
  A4-4.19.1 Ship side
  A4-4.19.2 Shore side
    A4-4.20 Short data message
    A4-4.21 Random access channel scheme
  A4-4.21.1 Slot selection algorithm for the VHF data exchange random access channel
    A4-4.22 Announcement channel access scheme
    A4-4.23 Logical channel access
    A4-4.24 Logical channel use map
    A4-4.25 Unused logical channel slots as random access channel slots
    A4-4.26 Logical channel assignment
    A4-4.27 Retry mechanism
    A4-4.28 Data transfer protocol detail
  A4-4.28.1 Shore originated broadcast
  A4-4.28.2 Ship originated broadcast outside control station service area
  A4-4.28.3 Ship originated broadcast inside control station service area
  A4-4.28.4 Shore to ship addressed message
  A4-4.28.5 Ship to shore addressed message
  A4-4.28.6 Ship to ship addressed message outside control station service area
  A4-4.28.7 Ship to ship addressed message inside control station service area
  A4-4.28.8 Shore to ship short data message
  A4-4.28.9 Ship to shore short data message
 A4-4.28.10 Ship to ship short data message
    A4-4.29 Segmentation of VHF data exchange payload
  A4-4.29.1 Segment description
A4-5 Network layer
A4-6 Transport layer
A4-7 Presentation interface layer
Annex 5  Technical characteristics of VHF data exchange-satellite operating in the VHF maritime mobile satellite band
A5-1 Introduction
A5-2 Physical layer
     A5-2.1 VHF data exchange-satellite component key parameters
                  A5-2.1.1 Satellite to surface distance range
                  A5-2.1.2 Satellite transmission carrier frequency error
                  A5-2.1.3 Ship station transmitter requirements
                  A5-2.1.4 Ship station antenna gain
                  A5-2.1.5 Ship station noise plus interference level
                  A5-2.1.6 Satellite antenna characteristics
     A5-2.2 Technical characteristics of the VHF data exchange-satellite component downlink
                  A5-2.2.1 Satellite downlink equivalent isotropic radiated power
                  A5-2.2.2 VHF data exchange-satellite component downlink receiver thresholds
                  A5-2.2.3 VHF data exchange-satellite component downlink link budget
     A5-2.3 Technical characteristics of the VHF data exchange-satellite component uplink
                  A5-2.3.1 VHF data exchange-satellite component uplink receiver thresholds
     A5-2.4 Bit mapping
     A5-2.5 Spreading
                  A5-2.5.1 Spread spectrum with constant envelope
                  A5-2.5.2 Direct sequence spreading for downlink waveforms
     A5-2.6 Baseband shaping and quadrature modulation
     A5-2.7 Transmission timing accuracy
     A5-2.8 Half duplex and full duplex satellites
     A5-2.9 Frame structure
    A5-2.10 Pilots and syncword symbol location and modulation
    A5-2.11 Forward error correction and interleaving
    A5-2.12 VHF data exchange-satellite link configuration formats
    A5-2.13 VHF data exchange-satellite downlink block channel interleaver
A5-3 Link layer
     A5-3.1 Link layer definitions
                  A5-3.1.1 Physical channel
                  A5-3.1.2 Channel pair
                  A5-3.1.3 Logical channel
                  A5-3.1.4 VHF data exchange slotmap
                  A5-3.1.5 Bulletin board
                  A5-3.1.6 Short data message
                  A5-3.1.7 Data session
                  A5-3.1.8 Data fragment
                  A5-3.1.9 Satellite identification and network identifications
                  A5-3.1.10 Paging
     A5-3.2 Resource management
     A5-3.3 Endianness
     A5-3.4 Data structures
     A5-3.5 Slot functions
                  A5-3.5.1 Satellite bulletin board signalling channel
                  A5-3.5.2 Announcement signalling channel
                  A5-3.5.3 Data acknowledgement signalling channel
                  A5-3.5.4 Random access channel
                  A5-3.5.5 Data up or down channel
                  A5-3.5.6 Empty channel
     A5-3.6 Guard slot
     A5-3.7 VHF data exchange-satellite default bulletin board
     A5-3.8 Use of the data acknowledgement signalling channel
     A5-3.9 VHF data exchange-satellite message summary
    A5-3.10 VHF data exchange-satellite message descriptions
  A5-3.10.1 Satellite bulletin board
  A5-3.10.2 Media access control
  A5-3.10.3 Paging
  A5-3.10.4 Paging response
  A5-3.10.5 Resource request
  A5-3.10.6 Resource allocation
  A5-3.10.7 Start fragment
  A5-3.10.8 Continuation fragment
  A5-3.10.9 End fragment
 A5-3.10.10 Downlink acknowledgement
 A5-3.10.11 Uplink acknowledgement
 A5-3.10.12 Downlink short data message (with acknowledgement)
 A5-3.10.13 Downlink short data message (without acknowledgement)
 A5-3.10.14 Uplink short data message (with acknowledgement)
 A5-3.10.15 Uplink short data message (without acknowledgement)
 A5-3.10.16 Uplink short data message (without acknowledgement and destination identification)
 A5-3.10.17 Padding byte
 A5-3.10.18 Variable length uplink short data message (with acknowledgement)
 A5-3.10.19 Variable length uplink short data message (without acknowledgement)
    A5-3.11 Downlink retry mechanism
    A5-3.12 Uplink retry mechanism
    A5-3.13 Data transfer protocol details
  A5-3.13.1 Paging
  A5-3.13.2 Satellite originated broadcast
  A5-3.13.3 Satellite to ship addressed message
  A5-3.13.4 Ship to satellite addressed message
  A5-3.13.5 Satellite to ship short data message (with acknowledgement)
  A5-3.13.6 Ship to satellite short data message (with acknowledgement)
  A5-3.13.7 Satellite to ship short data message (no acknowledgement)
  A5-3.13.8 Ship to satellite short data message (no acknowledgement)
    A5-3.14 Random access
    A5-3.15 Logical channel assignment
    A5-3.16 Adaptive coding and modulation/rate adaptation
A5-4 Segmentation of VHF data exchange-satellite payload
A5-5 Network layer
A5-6 Transport layer
A5-7 Presentation Layer
Annex 6  Resource sharing method for VHF data exchange system terrestrial and satellite services
A6-1 Introduction
A6-2 VHF data exchange system resource sharing principles
     A6-2.1 Automatic identification system priority
     A6-2.2 Coordination between application specific message and VHF data exchange
     A6-2.3 Shore station VHF data exchange system control area
A6-3 VHF data exchange-terrestrial resource sharing between multiple controlling shore stations
A6-4 VHF data exchange-terrestrial and VHF data exchange-satellite resource sharing
A6-5 Sharing between different VHF data exchange-satellite systems