Transcript LINK 2000+ - ATN Conference

PETAL II and II Extension
Maastricht Multi-stack
Implementation
Lessons Learnt
Prepared by Gustaaf Janssens/Konrad Koebe
Maastricht UAC
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TOPICS
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What Do We Mean by Multi-Stack?
Why Multi-Stack ?
What Are Multi-Stack Design Considerations ?
MUAC Ground Architecture
MUAC Schedule Achievements
How Do We Test ?
What Are Our Lessons Learnt ?
Next Steps
Conclusions
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What Do We Mean by Multi-Stack ?

Accommodating Existing Specifications for
AGDL
NEAN Extension (Prototype VDL4)
FANS-1/A
ATN SARPs

Aim
Communicate With Any Avionics Equipment Using
One Of The Specifications
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Why Multi-Stack ?

PETAL-II Project Needs for MUAC
Operations - Hide AGDL Technology for User

Operational Requirements Validation Independent
From AGDL Technology
Quick Implementation

Project Has to Compete With Daily Life Activities at
an Operational Centre
Take Advantage of Existing Operational Avionics
Equipment
Encourage ATN SARPs based Air and Ground
Implementations
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Design Constraints (1)

Fit In MUAC Existing Ground Structure
HMI, FDPS, Gateways

Add Functionality in HMI and FDPS, Add AGDL
Gateway
HMI

Add to Normal Controller Presentation and Interface
FDPS

Based on ATN SARPs Ground End User Applications
Definitions
 AGDL Gateway
Single Access Point for FDPS
 Access Points for Underlying AGDL Technologies

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Design Constraints (2)

Evolutionary Development
Next Step Building on Results of Predecessor
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Maastricht Multi-stack GROUND End System (1)
Controller
HMI
Controller
HMI
Controller
HMI
Controller
HMI
Flight Data Processing System
ATM Services
9705
BER
P2GW (PETAL 2 GATEWAY)
NEAN GWY
FANS-1/A GWY
NEAN
SITA
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ProATN ES
ProATN
ROUTER
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9705
PER
VDL2-ATN
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Maastricht Multi-stack GROUND End System (2)
Controller
HMI
Controller
HMI
Controller
HMI
Controller
HMI
Flight Data Processing System
- Flight plan / address association
- ATN SARPs (ICAO 9705) CM, ADS, CPDLC
- All datalink service logic and dialogue control
9705
BER
P2GW
P2FEP
NFEP
FAFEP
- Aircraft address/state
- ASE emulation
CM, CPDLC, ADS
- Conv. to NEAN specs.
- Aircraft address/state
- ASE emulation
CM, CPDLC, ADS
- Conv. To FANS specs
NEAN
Server
FANS-1/A
Gateway
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ALLA- P2PI
- Aircraft address/state
- BER-PER Conversion.
ProATN
- ASEs: CM, CPDLC, ADS
- ATN Router
ATN 2001, London - 18 Sep 01
9705
PER
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Design Constraints (3)

P2GW
Holds and Manages Addressing Data
Buffers FDPS from Unexpected
communications
MADAP Msg= {Msg ID, Infra
ID+24bits+FID+Reg.Mark+9705-BER-Msg}
Hides Communication and Network Specifics from
FDPS
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Design Constraints (4)

AGDL Applications implemented
 CM, ADS, CPDLC

FDPS AGDL Services Using these Applications
CM: DLIC Acceptance
ADS: ADS demand (FLIPCY), ADS periodic (CAP)
CPDLC: (ACL, ACM, AMC)

FDPS Functionality Used for AGDL
 Manages Flight plan Operational Status
DLIC acceptance and ADS, CPDLC requests
 Terminates CPDLC, ADS

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Design Constraints (5)
Controller Authorisation

Only Controlling Sector handles CPDLC
FDP Controls Sequence Extraction

Next internal or external sector (NDA) identities
Controls Automatic Flight Plan Action
CMContact at OLDI ABI event
 CPDLC (NDA) at OLDI ACT event

Extracts Information for Controller HMI

radar picture and tabular display
Provides Authorised Input Sequences and
Guidance on Controller HMI
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MUAC Schedule Achievements (1)
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NEAN IN
4/98
FANS 1/A
2/99
P2GW - BAC1/11 using
ATIF/SATCOM, P-II message set.
5/00
MC-P2GW-BAC1/11 Flight using ATIF/SATCOM,
P-IIe message set.
9/00
Application Testing: FDPS-Avionics 11/00
FDPS, P2GW Ready
3/01
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MUAC Schedule Achievements (2)
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FANS1/A ONLINE: P-IIe Message set
NEAN OUT
CERTification Testing Support
Non Revenue Flights
MUAC-RUAC Shadow Flight
Revenue Flight
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4/01
4/01
5/01
6/01
7/01
8/01
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MUAC Technical Achievements (1)
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ICAO 9705 Compliant FDPS Implementation
Usage of ATN, FANS1/A and Prototype VDL4
First Fully Certified ATN avionics
CPDLC Flights May1998-June2001 = 8455
(FANS/NEAN)
Test Infrastructure
Test Methodology
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How Do We Test (1) ?

Test Approach
Local Tests

HMI, FDPS, P2GW
End-to-End Application Tests:

FDPS- Other ATC Centre - Avionics
• grounded avionics
• airborne avionics


Operational Observation
Overview of Our Test Configurations
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P2GW EMUL
FAME
AGDG-FANS
AFAME
NON REV
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PIIe Operational Observation
B767
VDL M2
CPDLC Services
VIA
ATN/VDL Mode 2
MAASTRICHT UAC Control Centre
PROATN
R
LAN
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PROATN
End
System
P2GW
LAN
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FDPS
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What Are Our Lessons Learnt (1) ?

Step by Step Implementation
NEAN

Validation of Technical Concept and Architecture
FANS 1/A

Validation of ‘Multi Stack’ Concept
• HMI, FDPS Independent From AGDL Technology
ATN SARPs
Validation of SARPs Compliant Implementation
 Additional Operational Messages and Stack Functions

Lessons

More Testing Effort due to Regression Testing ?
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What Are Our Lessons Learnt (2) ?

ATN SARPs Implementation Tests
 Early Feedback = Early Application Error Detection
and Correction
BAC1-11 Test Flights
 ATIF-ground Testing
 End-to-End Application testing

No Application Errors Detected During CERT, NonRevenue and Revenue Flights
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What Are Our Lessons Learnt (3) ?

Local Tests as Much as Possible
 Avionics Emulators
Test Automation
 Protocol Test facilities

External Testing is Expensive
Test Setup
Test Execution
Time Consuming

Good Test Objectives and Strategies
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What Are Our Lessons Learnt (4) ?

Future Requirements for Test Tools and
Strategies
Reference Test Tools Required
Available For All Implementers
 Common Development
 A lot of Tools exist. Usable to further develop ?

Reference Test Objectives and Strategies

Separate Test Network Required
Connect Test Systems
Intra Centre Test
Avionics Tests
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Next Steps (1)

Complete PETAL-IIe
System Safety Assessment
Document Lessons Learned
Consolidate Documentation
Evaluate Test Automation (GEODE)

New Project (P2L = PETAL To LINK2000+)
(in approval and initiation phase)
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Next Steps (2)

P2L Objectives
Maintain a State of the Art Implementation of the
Existing AGDL Implementation.
Ensure Safety of all Operational Systems
Increase the Number of aircraft applying AGDL
Services (FANS, ATN)
Support the LINK 2000+ Project
Enabler for aircraft to equip.
 Enabler for other Centres
 Enabler for COMS
 Enabler for Test and Validation tools - Common
Development and Support.

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CONCLUSION
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MULTI STACK CONCEPT WORKS !
SERVE MORE AIRCRAFT
CONNECT TO NEIGHBOUR ATC CENTRES
THANK YOU PARTNERS FOR THE
COOPERATION !
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