Future Communications Study Technology Assessment Team: Suggested Phase III Activities

1
Future Communications Study Technology Assessment
Team Suggested Phase III Activities

• Presented at ICAO ACP WGC Meeting,
• Brussels, Belgium
• September 19, 2006
• Prepared by
• ITT/Glen Dyer, Tricia Gilbert
• NASA/James Budinger

2
Background

• Phase III of the Future Communications Study
  (FCS) technology investigation has recently
  commenced
• Focus of Phase III is detailed investigation of
  two additional technologies initially screened in
  Phase I and II activities to evaluate
  applicability for the future radio system
• Phase III builds upon knowledge gained in first
  two study phases
• General technology knowledge (e.g. technology
  concepts of use for aviation application)
• Evaluation criteria knowledge (derived and
  traceable evaluation metrics)
• Detailed technology investigation knowledge

3
Phase III Detailed Technology Evaluation
Activities

• Three major task areas have been identified
• Screened Technology Analyses (with focus on
  technologies not yet investigated)
• Candidate technologies for additional detailed
  investigations include W-CDMA, B-VHF and L-Band
  E-TDMA
• Common Model/Tool Development
• DME and Mode S Interference Measurements
• Final Technology Evaluation and Recommendations

4
Task Area 1 Screened Technology Analyses

• Objective
• Detailed analysis of the suitability of Phase II
  recommended technologies as FRS solutions
• Initial technology study focus is WCDMA
• Other candidates B-VHF or E-TDMA
• These are the best performing technologies that
  have not yet been analyzed in detail
• The goal of this activity is to determine each of
  these technologies as fitting into one of the
  following categories as a FRS solution
• A totally suitable existing technology for the
  FRS
• A custom solution for the FRS to meet aviation
  needs
• A hybrid technology solution

5
Task Area 1 Screened Technology Detailed Analyses
6
Task Area 1 Common Model/Tool Development
Overview

• Approach identified in original FCS documentation
  calls for simulation of screened technologies,
  for example
• Define common environmental models/loading
  scenarios for evaluating technologies
• Build representative models for candidate
  technologies
• Evaluate technology performance
• Must ensure developed tools/models for Phase III
  analysis address the range of evaluation criteria
  proposed for technology selection, including
• Technical criteria addressing required
  functionality and performance of the future radio
  system
• Institutional criteria addressing factors of a
  technology that make it a viable candidate
  solution (e.g. cost/risk factors)

7
Task Area 1 Example Evaluation Tools/Models
Evaluation Criteria Technology Detailed Analyses Analyses Tools/Models
Functional Criteria Functional Capability - ATC and AOC A/G and A/A Addressed Data and G-A Broadcast Data Capability Functional flow diagrams, sequence diagrams, swim lines Rational Rose CORE any appropriate diagramming tool
Communication Performance Latency, QoS, Capacity, Number of Users Protocol Simulation Physical Layer Simulation Common Traffic Model Common Channel Model
Institutional Criteria Maturity for Aeronautical Environment - Technical Readiness Level Not required Assessment by Inspection
Maturity for Aeronautical Environment - Standardization Status Not required Assessment by Inspection
Maturity for Aeronautical Environment - Certification Issues Detailed assessment of safety aspects of system Tools to diagram and capture fault tree analysis
Cost Ground Cost Cost Analysis Cost Model Methodology Cost Model Assumptions
Cost Avionics Cost Cost Analysis Cost Model Methodology Cost Model Assumptions
Spectrum Protection Not required Assessment by Inspection
Security Vulnerability Assessment Security Assessment Methodology
Transition ROI, technical migration (including integrity and availability performance), and operational migration Availability Analysis Common Architectural Assumptions
8
Task Area 1 Tool Development Objectives and
Approach

• Objective
• Develop consensus on required tools/models for
  future radio system technology evaluation
• Tool/model development
• Approach
• Participate in consensus meetings to identify
  tools/models required for technology evaluation
• Determine format for tools/models
• Support tool/model development and validation

9
Task Area 2 DME and Mode S Interference
Measurements

• Objective
• Further characterization of DME and Mode S
  equipment interference performance against
  proposed modulation types for the FCS
  particularly susceptibilities from the following
  types of equipment
• CDMA
• MCM
• Narrowband Digital
• Approach
• This activity will consist of the six
  interrelated tasks shown in the figure

10
Task Area 3 Final Technology Evaluation and
Recommendations

• Objectives
• Solicit, collect, and assess a wide range of
  stakeholder inputs and feedback
• Perform the final technology evaluation and
  develop appropriate recommendations
• Approach
• Combine technology performance assessment against
  derived criteria with synthesis of a wide range
  of stakeholder input/feedback to fully reflect
  stakeholder requirements
• Facilitated through a more extensive application
  of the defined Analytical Hierarchy Process

11
Action Request

• The ACP Working Group is invited to consider the
  technology investigation activities described in
  this paper, and provide comments if desired
• It is recommended that the ACP Working Group
  discuss and agree upon the desired outcome of the
  Future Communications study
• It is recommended that the ACP Working Group
  discuss and agree upon the need for a
  comprehensive modeling approach against all
  evaluation criteria and specify model structures
  for each