Required Total System Performance (RTSP) Bernard Miaillier EUROCONTROL

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Required Total System Performance (RTSP) Bernard
Miaillier EUROCONTROL
Agenda Item 3
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Genesis of RTSP

• RCP, RNP, RSP
• Conceived within the FANS Committee
• For CNS Performance Requirements
• Notion generalised to RTSP
• ICAO ATMCP tasked to investigate feasibility
• Future ATM to be performance based (incl.
  safety)(see Agenda Item 1, WP/4 - operational
  concept )
• Complex topic, initial work aimed at ANC/11

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Need for Performance Orientation

• ATM serves society and air traffic stakeholders
• Various expectations, safety comes first
• Performance, always a reference
• safe, orderly and expeditious flow of traffic
• Performance orientation trend in economy
• Communicate on goals, achievements
• Current and future requirements
• Plans and actual levels
• Support / facilitate decision making
• Understand the effect of changes
• To move system developmentfrom add-ons to goal
  driven

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A Performance Framework to Structure Discussion

• Three pillars
• A hierarchy of ATM Performance Concepts
• Accurate models of what drives what
• e.g. cause/effect relationships between
  expectations, functions, system components,
  concept of use, architecture
• Rigorous description of traceable performance
  parameters
• An approach ISO13236 Quality of Service Framework

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Hierarchical ATM Performance Concepts Models
Level 1 Political and socio-economic
requirements safety, security, environmental
efficiency, costs, etc.
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Quality of Service (QoS) Framework ISO 13236

• Use for RTSP seems appropriate for
• ATM system constituents, even operational
  services
• they can be represented in terms of information
  processing
• Describing underlying technical services
• Main requirements covered by 4 characteristics
• Delay - Transient responsiveness
• Capacity - Throughput
• Integrity - Accuracy
• Reliability - Availability

• Illustration
• RNP
• navigation accuracy
• RCP
• 95 transit delay
• message integrity
• reliability/availability

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From Expectations to System Characteristics
Trade-offs, except for safety
Operational concept Scenarios System architecture
RTSP
ATM System
RASP
Expectations
SMART Metrics
Global / regional / local targets Vs global
standards
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RTSP an aggregate of ATM system component
requirements

• Describes the performance of the ATM Concept
  Components in a given environment
• Adapted to local and user needs
• Defined for most demanding characteristics
• Not independent from available implementation
  options
• balance between generic (to keep implementation
  flexibility), specific (to prevent proliferation
  of solutions)
• Driven by most stringent requirements
• likely conflict management and navigation
  (real-time, safety related decisions)
• Summed up by a few Categories only ?

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RTSP / Performance in ICAO Activities

• Framework to facilitate co-ordination of
  individual contributions
• Planning Tool
• Global, regional or local same model,
  consistency, harmonisation
• For the target situation and the implementation
  steps towards it
• Monitoring Tool
• Against objectives, at appropriate level
• Feed back is essential

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Future Work

• Feasibility to be confirmed
• Define metrics
• Further develop the framework
• Distribute individual aspects to panels with an
  overall consolidation body
• Keep momentum on SARPs development and planning
• Priorities
• Upper layers, definition of indicators/targets
• Understand ATM system behaviour

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Agenda Item 3 Expected Discussion Outcome

• WP/8 basis for discussion
• Conference expected to
• Support performance orientation for future ATM
  definition
• Call for, and support, more work to
• Formulate and define objectives/targets metrics
• Harmonise all contributions within an overall
  framework.

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