www.airtel-atn.com the future of petal technology frank oconnor atn 2001 18th september 2001
TRANSCRIPT
ww
w.a
irtel
-atn
.com
The Future of
PETAL Technology
Frank O’Connor
ATN 2001 18th September 2001
ww
w.a
irtel
-atn
.com
PETAL-II Datalinks
Maastricht
FANS-1/A(ACARS)
SAS, Lufthansa American AirlinesSRA, ANZ, UAL, DLH, QFA, SIA, ACA, COA
ATN(VDLM2)
NEAN(VDLM4)
ww
w.a
irtel
-atn
.com
ATN Concept
– ATN is a Mobile Aviation Internetwork which• Provides Communications support for ATC and AOC
traffic• Interconnects Airborne and Ground Systems• Provides High Availability, Prioritisation and other
features required to support ATC traffic• Provides a strategy for Integration of different types of
Networks• Integrates with and complements existing network
infrastructure• Re-uses existing products and technology
– ATN also Defines a set of CNS/ATM specific applications
ww
w.a
irtel
-atn
.com
ATN Distinguishing Features
– Mobile Routing– Enhanced End-to-End Data Integrity– Priority and Pre-emption– Traffic Type (Security Parameter) Identification– Policy Based Routing– Air/Ground Datalink Compression– Bit-Oriented Application Support using
condensed Packed Encoding Rules (PER)– Certified Software
ww
w.a
irtel
-atn
.com
ATN Technology Origins
• International Standards Based– OSI was Governmental Standard when ATN
Standards Development began
• Re-Use where Practical– Existing Standards and Technologies– Existing Infrastructure and Products
• Extend Standards where Necessary– Air/Ground Segment– Mobility– End-to-End Reliability– CNS/ATM Specific Applications
ww
w.a
irtel
-atn
.com
ATN Unique Protocols and Standards
– ATN Application Service Elements for:• CM• CPDLC• ADS
– Mobile SNDCF and associated IS-SME
– Connected Oriented (v8208) Network Circuit between Airborne Router and Ground System
ww
w.a
irtel
-atn
.com
ATN Re-use/Extension to Standards (cont.)
– ATN Addressing Plan to provide unique addressing for ATN Airborne and Ground Systems
– ATN Router (Intermediate System) Protocols• Networking Protocols adapted to support Mobile
Internet• OSI Routeing Exchange Protocols Extended to support
Mobility, Prioritisation and Traffic Types– IDRP (Inter-Domain Routeing Protocol)
– ES-IS (End-System to Intermediate System Protocol)
• CLNP (Connectionless Network Protocol) extended to support traffic type and prioritisation
• v8208 (8208 extended for VDL use)• Policy Based Routing
ww
w.a
irtel
-atn
.com
ATN Re-use/Extension to Standards
– ATN End-System Protocols• Provide the Airborne and Ground Applications with an
ATN Interface to enable communication between them• Dialogue Service Specified over Fast Byte Upper Layer
Communications Services• Transport Protocol(COTP/CLTP) enhanced to provide
end-to-end integrity, and traffic type support
ww
w.a
irtel
-atn
.com
Why IP is not used instead of OSI
– OSI was a Governmental Standard when ATN Development started
– OSI has some advantages but a change to TCP/IP would be a major cost that cannot be technically or economically justified
– New SARPS would need to be developed– IP Protocols would need to be extended in the
same way as OSI to provide Mobility, End-to-End Integrity …..
– Certified Products would need to be developed
ww
w.a
irtel
-atn
.com
ATN Datalink Components in PETAL
• Avionics Systems
• VDL Mode-2 Ground Infrastructure
• Maastricht ATC Systems
ww
w.a
irtel
-atn
.com
PETAL ATN Datalink Components
VDL-M2 Gnd Station
Maastricht
ARINC VDLM2 Ground Infrastructure
Air/Gnd Router
Gnd/Gnd Router Gnd/Gnd
Router
Gnd ATSES Stack
FDPS
Rockwell Collins Avionics
VDRMode-2
Airborne Router
Air ATSES Stack
CM/CPDLCApps.
CMU
ww
w.a
irtel
-atn
.com
Avionics Systems
• Rockwell Collins CMU-900
– Airborne ATN Router– Airborne End-System Stack– CM/CPDLC Applications
• VDR (Mode-2)
• MCDU
ww
w.a
irtel
-atn
.com
Airborne Router
– Establishes/Releases Mobile Connections to Air/Ground Routers over Available Sub-networks
– Relays Data between the Aircraft and Air/Ground Routers, handling compression
– ATN/OSI Technology include:• Mobile Routeing Protocols
– IS-SME
– ES-IS
– IDRP
• CLNP (Connectionless Network Protocol)• Mobile SNDCF • v8208 Sub-network Support
ww
w.a
irtel
-atn
.com
Airborne End-System Stack
– Provides the Airborne Applications with an ATN Interface to enable communications with the Ground System Applications
– ATN/OSI Technology include:• CM & CPDLC ASEs (Application Service Elements)• Upper Layer Communications Services• COTP (Connection Oriented Transport Protocol)
ww
w.a
irtel
-atn
.com
VDL Mode-2 Ground Infrastructure
• VDL M2 Ground Stations
• ATN Air/Ground Routers
• ATN Ground/Ground Routers
• Infrastructure Interconnections
ww
w.a
irtel
-atn
.com
VDL Mode-2 Ground Stations
– Controls the Establishment/Release of VDL Links between Airborne and Ground Radios
– Integrates the Ground VDRs with the Ground Networks by acting as a bridge
– Interfaces with the Air/Ground Routers– ATN/OSI Technology:
• v8208 to provide connection-oriented VDL network link• 8208 to provide connection to Air/Ground Router
ww
w.a
irtel
-atn
.com
Air/Ground Routers
– Keeps track of Aircraft connected to it and handles Mobility and Hand-over between Aircraft
– Propagates Routing Information using IDRP– Relays Data between Aircraft and Ground
Network– ATN/OSI Technology:
• Mobile Routeing Protocols– IS-SME
– ES-IS
– IDRP
• CLNP (Connectionless Network Protocol)• Mobile SNDCF • 8208 Sub-network Support
ww
w.a
irtel
-atn
.com
Ground/Ground Routers
– Propagates Routing Information for Aircraft and Ground system throughout Network using IDRP
– Relays Data between Ground Systems– ATN/OSI Technology:
• IDRP Routeing Protocols• CLNP (Connectionless Network Protocol)• 8208 and other Sub-network Support
ww
w.a
irtel
-atn
.com
Infrastructure Interconnections
– Interconnections between Ground systems such as VDL Ground Stations, Ground/Ground Routers and End-System was accomplished using existing networks and products.
– The networks used include:• IP and OSI LANs• X.25• Other underlying networks used by telecom service
providers
ww
w.a
irtel
-atn
.com
Maastricht ATC Systems
• ATIF Ground/Ground Router
• ATIF End System Stack
• Flight Data Processing System
ww
w.a
irtel
-atn
.com
Maastricht ATIF Ground/Ground Router
– Propagates Routing Information to/from External Networks
– Relays Data between Ground ATC Centre and External Networks
– ATN/OSI Technology:• IDRP Routeing Protocols• CLNP (Connectionless Network Protocol)• 8208 and other Sub-network Support
ww
w.a
irtel
-atn
.com
Maastricht ATIF End-System Stack
– Provides the ATC Applications with an ATN Interface to enable communications with the Aircraft Applications
– ATN/OSI Technology include:• CM & CPDLC ASEs (Application Service Elements)• Upper Layer Communications Services• COTP (Connection Oriented Transport Protocol)• CLNP (Connectionless Network Layer)
ww
w.a
irtel
-atn
.com
Airtel ATN’s Involvement
– Airtel ATN was originally part of Retix, an OSI COTS Software Supplier
– Retix Supplied OSI Software for Early ATN Prototype such as EURATN
– Retix developed the TAR, TTS and Airborne TAR for Eurocontrol in support of ATIF and European ADS Trails based on Re-Use of COTS Software
– Airtel developed Airborne CM, CPDLC and ADS applications used in pre-PETAL trials
– TAR, TTS and Airborne TAR/TTS used in pre-PETAL trails on QinetiQ (DERA) BAC-111 and at Eurocontrol (Bretigny) site
ww
w.a
irtel
-atn
.com
Airtel ATN’s Involvement (cont.)
– The Extended and Enhanced Retix OSI COTS software is incorporated into the following PETAL systems:
• Rockwell Collins CMU-900 ATN Router and Upper Layer Communication Services
• ARINC Air/Ground and Ground/Ground ATN Router Software
• ProATN Ground/Ground Routers and End-Systems used in the Maastricht centre
ww
w.a
irtel
-atn
.com
Future Direction of ATC Datalink Technologies
– Co-existence of ATN/IP• IP and ATN Traffic sharing same networks and
datalinks where permitted• IP used for Airline and Passenger Communications • Standardised IP Sub-network to enable use of existing
public and private IP networks within the ATN
– Additional Sub-Network Support• VDLM4/VDLM3 as ATN Sub-Networks• Spread Spectrum CDMA• SATCOM Broadband Network• Wireless LAN Gatelink
ww
w.a
irtel
-atn
.com
Future Direction of ATC Datalink Technologies (cont.)
– Security• Utilise Industry Standard PKI (Public Key Encryption)
Techniques, Procedures and Products• Authentication of Mobile Systems (Aircraft) by DSP and
ATSO• End-to-End Confidentiality and Non-Disclosure