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Required Total System Performance (RTSP) Bernard Miaillier EUROCONTROL. EUROCONTROL. Agenda Item 3. Genesis of RTSP. RCP, RNP, RSP Conceived within the FANS Committee For CNS P erformance R equirements Notion generalised to R TS P ICAO ATMCP tasked to investigate feasibility - PowerPoint PPT Presentation
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Required Total System Performance (RTSP)
Bernard Miaillier EUROCONTROL
Agenda Item 3
EUROCONTROL
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
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 development
from add-ons to goal driven
4
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
Hierarchical ATM Performance Concepts & Models
Level 1: Political and socio-economic requirementssafety, security, environmental efficiency, costs, etc.
Level 1: Political and socio-economic requirementssafety, security, environmental efficiency, costs, etc.
Level 2: RASPsafety, throughput, delay, predictability, flexibility, etc.
Level 2: RASPsafety, throughput, delay, predictability, flexibility, etc.
Level 3: RTSPon operational functions/entitiesset of characteristics
Level 3: RTSPon operational functions/entitiesset of characteristics
RfnPRfnPRf1PRf1P
Level 4: System Requirementsfor an airspace and/or type of userssets of consistent enabler requirements, e.g. RNP, RCP, etc.
Level 4: System Requirementsfor an airspace and/or type of userssets of consistent enabler requirements, e.g. RNP, RCP, etc.
{ … }{ … }
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Level 5: Standards & specifications (technologies)tech. SARPs, MOPS, standards, ISO90xy, etc.
Level 5: Standards & specifications (technologies)tech. SARPs, MOPS, standards, ISO90xy, etc.
ActualPerformanceMeasurement& Monitoring
Illustration• RNP
– navigation accuracy
• RCP– 95% transit delay
– message integrity
– reliability/availability
Illustration• RNP
– navigation accuracy
• RCP– 95% transit delay
– message integrity
– reliability/availability
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
From Expectations to System Characteristics
RTSPRTSPRASPRASP
ATM System
“SMART” Metrics“SMART” Metrics
Trade-offs, except for safetyTrade-offs, except for safety
Global / regional / local targets Vs global standards
Global / regional / local targets Vs global standards
Operational concept Scenarios
System architecture
Operational concept Scenarios
System architecture
Expectations
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 ?
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
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
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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