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Overview

“ATN Configuration and Analysis Issues” Jörg Steinleitner CNS Group NLR ATM Department ATN2001 London, 18th September 2001. Overview. A Tool for ATN Protocol & Performance Analysis - NAPPA Once upon a Time: “EOLIA Extension” Flight Trials ATN Configuration for PETAL IIe Flight Trials

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Overview

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  1. “ATN Configuration and Analysis Issues”Jörg SteinleitnerCNS GroupNLR ATM DepartmentATN2001London, 18th September 2001

  2. Overview • A Tool for ATN Protocol & Performance Analysis - NAPPA • Once upon a Time: “EOLIA Extension” Flight Trials • ATN Configuration for PETAL IIe Flight Trials • PETAL IIe Flight Trials: Scenarios & Analysis

  3. Overview • A Tool for ATN Protocol & Performance Analysis - NAPPA • Principle of Operation • NAPPA Front-End’s • Once upon a Time: “EOLIA Extension” Flight Trials • ATN Configuration for PETAL IIe Flight Trials • PETAL IIe Flight Trials: Scenarios & Analysis

  4. Data Link Server ATN Protocol Stack NAPPA - Principle of Operation • NAPPA = “NLR ATN Protocol and Performance Analyser” Controller/Pilot Starting Point: ATN End System or Router Log Information

  5. map window message window altitude window NAPPA Front-End’s - NaReV • NaReV = “NAPPA Replay Viewer”

  6. downlink transmissions uplink transmissions Timeline sent received NAPPA Front-End’s - Ne2eV • Ne2eV = “NAPPA end2end Viewer””

  7. Overview • A Tool for ATN Protocol & Performance Analysis - NAPPA • Once upon a Time: “EOLIA Extension” Flight Trials • Scope of Flight Trials • From ATN Analysis to ATN Re-configuration • ATN Configuration for PETAL IIe Flight Trials • PETAL IIe Flight Trials: Scenarios & Analysis

  8. FLAAS NARSIM EOL2PIT Cessna Citation II TES TAR/TTS GES ProATN 2.x NLR Amsterdam Inmarsat GBIS ProATN 2.x MADAP P2FEP SITA X.25 WAN (A)GBIS ProATN 2.x EEC Bretigny GBIS ProATN 2.x GES ProATN 2.x Maastricht UAC SAS HMI EOL2PIT GES ProATN 2.x GBIS ProATN 2.x GES Aussaguel AATM Bagneux “EOLIA Extension” Flight Trials - Scope

  9. “EOLIA Extension” Flight Trials - Analysis • From ATN Analysis to ATN Re-configuration • Limits of ATN Protocol Layer Independence Perspective • Transport Layer Parameters vs. Satcom Performance • The Aspect of Multiple Connection-Oriented Communications • The Need for an Holistic View as part of ATN Configuration • A high-level ATN Analysis/Re-configuration Story Line • from Grounded Tests … • … to the first Test Flight … • … to the last Validation Flight

  10. What we saw during “Grounded” Tests ...

  11. … and what we got for the Test Flight...

  12. … and what we got for the last validation flight

  13. Overview • A Tool for ATN Protocol & Performance Analysis - NAPPA • Once upon a Time: “EOLIA Extension” Flight Trials • ATN Configuration for PETAL IIe Flight Trials • From EOLIA to PETAL IIe • PETAL IIe Flight Trials: Scenarios & Analysis

  14. From EOLIA to PETAL IIe Configuration ... • … considering the Changes with respect to the Mobile Communication Infrastructure • From a SATCOM-based ATN … • Low-gain Antenna • Single Coverage • Different uplink + downlink Communication Channels • “Quasi-static” Configuration (X.25, IDRP) • to a VDL Mode 2-based ATN : • Four Ground Stations organised in two “Clusters” • Multiple Overlapping Coverage • Shared uplink + downlink Communication Channels • Dynamic Configuration (Hand-off’s, X.25, IDRP)

  15. Overview • A Tool for ATN Protocol & Performance Analysis - NAPPA • Once upon a Time: “EOLIA Extension” Flight Trials • ATN Configuration for PETAL IIe Flight Trials • PETAL IIe Flight Trials: Scenarios & Analysis • Scenarios for AAL Non-revenue and BAC 1-11 Flights • Analysis Scope • Results

  16. PETAL IIe Flight Trials: Scenarios • Definition of Scenarios : • AAL B767 Non-revenue Flights • BAC 1-11 Test Flights • Definition of Flight Routes • Definition of Communication Behaviour • Overall Scenario Objectives • Verification physical VM2 Performance Characteristics • Verification VM2 Network Configuration • Verification overall end2end Configuration • Analysis end2end Network Performance • Verification overall Network Operation Characteristics

  17. Example: ‘AAL9599’ Scenario 9

  18. Operational Data Exchange (CPDLC + CM) end2end Transport Protocol TP4 CMU GES X.25 + IDRP AVLC AGBIS VM2 GS VDR VDR health SQP PETAL IIe Flight Trials: Analysis • Example: based on Airborne A429 & Ground CLNP Traces

  19. Example: ‘AAL9599’ 4th July 2001 Flight

  20. Summary • ATN Protocol & Performance Analysis as Integral Part of ATN Deployment • The “Real Stuff”: Importance of Operational Data Analysis • Cyclic Process: ATN Configuration <~> ATN Analysis • The Holistic Aspect of overall ATN Configuration • PETAL IIe : From Analysis to Interpretation of Results - A truly co-operative Effort

  21. QUESTIONS ?

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