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