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Efficient Migration Strategy for AOC Data Link Upgrade

Learn about the benefits of ATN for AOC, migration steps, challenges, and standards validation for a seamless transition to a more efficient and reliable data communications network.

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Efficient Migration Strategy for AOC Data Link Upgrade

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  1. ATN-2000 AOC Migration Strategy Presented by Frank O’Connor

  2. AOC Data Link Needs • Data Link is Essential to today’s Aviation • ACARS in use for AOC for over 20 years • Rapid Growth in Data Link Usage • Demand will soon Exceed Capacity of Current ACARS System • New Application need More Efficient and Reliable communications • ATN Provides a Network which can satisfy AOC Demands

  3. ATN Benefits to AOC • Digital Networks make more Effective Use of Available VHF Bandwidth • Communications Protocols provide a far more Reliable Data Transfer Mechanism • More Efficient Bit-Oriented Applications are supported • Supports Legacy Applications • Shared ATS and AOC Network

  4. AOC/ATN Benefits to ATSOs • Shared ATC/ATC Network is cost effective • FANS-1 built over Existing ACARS Network • Over 90% of ACARS Traffic is AOC • Airlines Equipage with ATN for AOC • Offsets Cost of ATC Equipage • Fleet replacement and data link upgrades aids in ATC deployment • AOC use of ATN Accelerates ATSOs’ use of Data Link

  5. Standards • ICAO SARPs defines Generic ATN Communication Service (GACS) • ARINC-637 specifies the use of ACARS over ATN including FANS-1 Applications

  6. Standards Validation • Eurocontrol have Validated the GACS Protocol • Eurocontrol Conducting further Tests to Validate ARINC-637

  7. Migration Steps • Migrate Directly to ATN OR • Use AOA (ACARS over AVLC) as an intermediate step

  8. ACARS over AVLC (AOA) • Enables ACARS Traffic over the VDL Mode-2 Infrastructure • No Modification Required to: • Existing Legacy Airline Host Systems • Existing Airborne Applications • Modifications Required to: • Interface Airborne ACARS Router Modified with VDL Mode-2 Avionics • Provide Gateway function between ACARS and VDL

  9. ACARS over AVLC cont. • Benefits • Meets Immediate Need for Additional ACARS Bandwidth • Justifies Deployment of VDL Mode-2 Network prior to ATN Availability • Weaknesses • Supports VDL Mode-2 but no additional ATN advantages • Additional Equipage Cost to transition to ATN • May Delay ATN Deployment • Delays New Application Development

  10. ACARS over ATN • ATN and ARINC-637 Standard to support ACARS over ATN • No Modification Required to: • Existing Legacy Airline Host Systems • Existing Airborne Applications • Modifications Required: • Airborne Interface between ACARS and ATN Router • Gateway function between ATN Router and Hosts System

  11. ACARS over ATN (cont.) • Benefits • More Efficient and Reliable than AOA • Fully ATN Compliant provides for earlier deployment of new efficient bit-oriented applications • Single step, no AOA Equipage Cost • Weaknesses • Product Availability

  12. Industry Status • AOA • Comms. Service 2000/2001 • Avionics Announced • ACARS over ATN • ATN Comms. Service 2001/2002 • AOC Gateway Server Q2/2001 • AOC Airborne Software Q2/2001 • Avionics Availabilty Not Announced

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