Transcript AIRCOM Data Link Service Evolution IATA Data Link

SITA AIRCOM
Data Link Service
David Russell
ATS Market Manager, SITA AIRCOM
ATN ‘99, London, 23 September 1999
Summary
• Development of SITA Aircraft Datalink.
• History
• ACARS Data Link
• How ATC uses Datalink today.
• Services
• Implementation Support
• The future of Datalink.
•
•
•
•
Capacity - VDL.
The need for ATN.
Implementation Schedule.
SITA ATN Services.
ATN ‘99, London, 23 September 1999
History
• The airlines created SITA in 1949 to
provide them with shared network
services.
• SITA established an integrated data (and
now digital voice) network, with access
points in over 220 countries.
ATN ‘99, London, 23 September 1999
History
• From 1985, SITA expanded data network
coverage to aircraft by:
– deploying VHF AIRCOM ground stations and
– establishing links to the Satellite AIRCOM
INMARSAT ground stations.
• The AIRCOM Data Link Service provides
aircraft with a means to exchange data
with airline systems connected to the
SITA terrestrial network.
ATN ‘99, London, 23 September 1999
ACARS Data Link
• SITA provides AIRCOM Data Link service
for use by Aircraft Communication
Addressing and Reporting System
(ACARS) avionics.
• The AIRCOM Data Link service is used
by over 4,000 aircraft, belonging to over
90 airlines.
ATN ‘99, London, 23 September 1999
VHF AIRCOM Coverage (end
1999)
ATN ‘99, London, 23 September 1999
How ATC uses Datalink today
• ATC Datalink.
• Clearance Services.
• D-ATIS Services.
• FANS-1/A Services.
• Support to ATC Datalink implementation.
ATN ‘99, London, 23 September 1999
ATC Data Link
• With the ICAO adoption of the FANS
CNS/ATM concept, SITA began working
with ATC agencies to define ATC Data
Link services.
• SITA participates in the development of
ATC data link standards and
performance requirements.
• SITA offers AIRCOM ACARS network
access to ATC agencies implementing
initial data link services.
ATN ‘99, London, 23 September 1999
AIRCOM Use for ATC
Clearances
Flight
Plan
Processing
System
1
5
ACARS
AVIONICS
CLEARANCE ACQUISITION
3
CLEARANCE REQUEST
2
4
POSITIVE ACK
CLEARANCE MESSAGE
CLEARANCE ACK
CLEARANCE SYSTEM
IN ATC CENTRE
ATN ‘99, London, 23 September 1999
AIRCOM
SERVICE
PROCESSOR
AIRCOM use for Digital ATIS
VHF AIRCOM Ground Station
Voice ATIS
VHF Ground
Station
Datalink ATIS and digitised
voice ATIS are provided by
the same system ensuring
identical information is
provided by both means.
SITA Datalink Service Processor
routes ACARS messages containing
ATIS requests between aircraft and
the ATIS ground system
ATN ‘99, London, 23 September 1999
AIRCOM use for FANS-1/A
ADS/CPDLC
Satellite Data Unit
FANS-1/A ADS/CPDLC
ACARS Convergence Function
ACARS Management Unit
VHF Transceiver
Satellite
AIRCOM
VHF AIRCOM Ground Station
SITA Network
FANS-1/A Ground System
ADS/CPDLC
ACARS Convergence Function
SITA ACARS Processor uses the address
entered by the airborne system to route
messages to the destination FANS-1/A
ground system.
ATN ‘99, London, 23 September 1999
ATC Data Link Implementation
• SITA supports ATS provider tests of their
data link applications to measure the
performance and to define procedures
for their use.
• SITA has introduced enhancements such
as direct X.25 access for ATC ground
systems to resolve performance issues
with the teletype access network.
ATN ‘99, London, 23 September 1999
ATC Data Link Implementation
• Eurocontrol is using the SITA AIRCOM
service in the PETAL II tests for
Maastricht ATC to exchange CPDLC
messages with FANS-1/A equipped
aircraft.
• PETAL II demonstrates that an ATN
compliant CPDLC ground system can
communicate with aircraft equipped with
either FANS-1/A or ATN CPDLC.
ATN ‘99, London, 23 September 1999
Future of SITA Datalink
• Capacity - VDL.
• The need for ATN.
• Implementation Schedule.
• SITA ATN Services.
ATN ‘99, London, 23 September 1999
Capacity - VHF ACARS to VDL
• The VHF ACARS networks in the high
density airspace of Europe and the USA
cannot support increased traffic.
• While more VHF frequencies may be
available for VHF ACARS in USA, there
are none available in Europe.
ATN ‘99, London, 23 September 1999
Capacity - VHF ACARS to VDL
• SITA will increase VHF AIRCOM data link
capacity by introducing VHF Digital Link
Mode 2 service providing 10-20 times
more capacity per channel.
• SITA has contracted with Harris
corporation to develop a VHF Ground
Station (VGS), providing VDL Mode 2 and
VHF ACARS service, for delivery in 2000.
ATN ‘99, London, 23 September 1999
The need for ATN
• To meet the predicted increase in aircraft
movements ATS Providers seek
affordable and sustainable growth in
airspace capacity to meet (reducing)
delay targets.
• Increased air traffic will be supported by
migrating from voice to data comms,
leading to an exponential rise of ATC
datalink usage.
ATN ‘99, London, 23 September 1999
The need for ATN
• Airlines Seek:
– Increase operational efficiency,
– Increase operational flexibility,
– To take advantage of increased aircraft
automation.
• Airlines need a single, global standard to
ensure that the same avionics can be
used world-wide.
ATN ‘99, London, 23 September 1999
ATN Implementation Schedule
• The earliest plan to implement
operational ATN CPDLC service is the
FAA CPDLC Build 1 in July 2002.
• ATC host upgrade cycles indicate that
ATN CPDLC cannot be implemented
operationally in Europe before 2003.
• Certified ATN applications will be
integrated into production avionics
around 2002, airline fleet equipage will
ramp up after this date.
ATN ‘99, London, 23 September 1999
Potential transition paths
identified in Link 2000+
New aircraft deliveries
A
New aircraft deliveries
No Datalink
New aircraft
deliveries
B
ACARS
D
FANS-1/A
AOA
New aircraft
deliveries
C
New aircraft
deliveries
E
ATN &
Mobile Subnets
Graphic c/o Eurocontrol
ATN ‘99, London, 23 September 1999
SITA ATN Subnetwork
Services
• Satellite AIRCOM support for ATN
communications has been demonstrated
in the ADS Europe project.
• The SITA VDL ground station will support
ATN/VDL sub-network service.
• SITA will also offer ACARS over AVLC
(AOA) service to promote the installation
of avionics platforms designed to
support a full ATN implementation.
ATN ‘99, London, 23 September 1999
SITA ATN Routing Services
• SITA developed an ATN Router as a
partner in ProATN and its predecessor,
the EurATN project.
• SITA will provide operational ATN routing
services based on the ATNSI / ACI Router
Reference Implementation.
• SITA has agreed to contribute financially
to the ATNSI development of the
ATN/VDL interface.
ATN ‘99, London, 23 September 1999
Conclusions
• ATC agencies are implementing ATN to
increase airspace capacity in response
to increasing demand.
• SITA will support this objective by
enabling CPDLC services to be offered to
the widest possible range of datalink
equipped aircraft.
ATN ‘99, London, 23 September 1999