Communications Operating Concept Requirements COCR ICAO ACP WGT

Communications Operating Concept & Requirements (COCR) ICAO ACP WG-T Montreal 2 - 5 October 2007 Gregg Anderson - FAA Danny van Roosbroek - EUROCONTROL 11/24/2020 1

Outline • • 11/24/2020 Purpose of the COCR Development of Version 2. 0 Common Evaluation Scenarios Conclusions 2

Aircraft Traffic Communications A Day in 2025 11/24/2020 • More than double today’s traffic • T -Throughput • Advanced ATC concept • C - Continuity • Data is Primary • I - Integrity • … • A - Availability 3

COCR development • Joint EUROCONTROL/FAA activity through common team • Based on potential operational scenarios available at the time in medium and long term – Phase 1 – to 2020 – Phase 2 – 2020+ – Paradigm shift between Phases when data communications becomes the ‘normal’ means of communication • Future radio system is aimed at supporting the Phase 2 requirements – Primarily for data communication • COCR carried out an analysis to support these requirements in various phases of flight 11/24/2020 4

Overview of the COCR (1/3) • Captures the operational requirements for Phase 1 (from now to 2020) and Phase 2 (beyond 2020) – Concept in Phase 1 is drawn largely from available material at the time i. e. the EUROCONTROL ATM concept document for 2008 -11 & 2020 and beyond – Concepts in Phase 2 are based on more extensive use of Phase 1 services and more advanced operations (e. g. 4 D Trajectory Management) • Autonomous operations take place in some parts of the airspace • Based on postulated ATS operational concept using existing documentation and extending it into the future • Broadly in-line with SESAR and Next. Gen concepts of operation 11/24/2020 5

Overview of the COCR (2/3) • From the operational concepts, information flows have been identified in representative test volumes of airspace i. e. ‘positions/sectors’ in Airport, TMA, En Route, & Oceanic. – Airport positions & Radar sectors in Phase 1 similar to today – Radar sectors larger in Phase 2, perhaps 2 -3 x. Airport positions pretty much the same as Phase 1 • Covers all ATS and AOC air-to-ground air-to-air voice and data communication – Includes ADS-B and AOC applications • Includes micro-jets & UAV’s (only ATC control element) • Does not include Air Marshall, UAV Command & Control, SWIM, or spacecraft communications 11/24/2020 6

Overview of the COCR (3/3) • Identifies all communication requirements based on safety and security analysis – Availability, continuity, reliability and latency – Requirements are technology independent • Communication requirements are then used in a queuing model for communication loading (b/s per service volume) – Aircraft numbers are grown over time using EUROCONTROL SAAM data in ECAC – MLM in US 11/24/2020 7

Final COCR Version 2. 0 • Final version of the COCR completed in March 07 – – Presented at ACP/1 – Responded to comments received on COCR Version 1. 0 and clarify areas of ambiguity – Ensured satisfactory agreement among stakeholders with some of the more stringent services and the surrounding concept of their use – Captured and defined missing services – Further defined services to ensure a more complete understanding of their operational use – Categorised services into similar safety/operation groups – Assessed the safety and security requirements associated with each group – Assessed the associated performance requirements impact – Used to support the technology assessment 11/24/2020 8

Requirements - capacity 11/24/2020 9

Requirements – Other Qo. S 11/24/2020 10

Requirements –Latency 11/24/2020 11

COCR TMA Sectors 11/24/2020 12

COCR En route Sector 11/24/2020 13

Evaluation Scenarios • Provide a family of generic operational environments based on an extrapolation of the Phase 2 COCR requirements so each expresses the same requirement in different ways • Reinterpretation of COCR requirements expressed in a variety of ways that can be better used during the technology assessment work • This set of scenarios were used in the technology assessment so as to compare results and identify the technologies in an equitable way 11/24/2020 14

Test Volumes 11/24/2020 15

Airport surface • The airport Test Volumes have been defined as: – TV 1. 1 Airport Zone: 10 NM diameter Cylinder including Runway and Tower operations but excludes surface. – TV 1. 2 Airport Surface: 5 NM diameter circle including Clearance/Ramp and Ground components. 5 NM was representative of a large European airport 11/24/2020 16

Core Europe • Concept of Core Regional Test Volumes was introduced: – TV 4. 1 -4. 4 have been redefined as Core Regional TVs – They are representative of a global Large Area Volume (LAV) such as ECAC or NAS. – Designed to formulate a generic large area rather than a specific case – Characterise a large terrestrial coverage area, or large terrestrial area inclusive of surrounding oceanic airspace regions • Core Regional Test Volumes provide a scenario for either TMA or ENR airspace. • Core Regional Test Volume designed for assessment of space based technologies. 11/24/2020 17

Aircraft Traffic Ref. Volume Type TV 1. 1 Airport Zone – 10 NM diameter 26 TV 1. 2 Airport Surface – 5 NM diameter 264 TV 2. 1 TMA Small – 49 x 49 NM 44 TV 2. 2 TMA Large – 75 x 75 NM 53 TV 3. 1 ENR Small – 55 x 55 NM 45 TV 3. 2 ENR Medium – 100 x 100 NM 62 TV 3. 3 ENR Large – 200 x 200 NM 204 TV 3. 4 ENR Super Large 400 x 400 NM 522 TV 4. 1 TV 4. 2 Core Regional FL 050 – FL 245 [TMA] Core Regional FL 245 – FL 450 [ENR] 1733 TV 4. 4 11/24/2020 PIAC 2908 Core Reg + Oceanic FL 050 – FL 245 [TMA] 1753 Core Reg + Oceanic FL 245 – FL 450 [ENR] 3415 • Traffic Growth Predicting tool used • Busy hour in busy day in 2025 (Phase 2 – COCR) • Peak aircraft count chosen for each Test Volume • Aircraft traffic assumed to be uniformly distributed within the test volume. 18

TMA small 11/24/2020 19

TMA large 11/24/2020 20

En route large 11/24/2020 21

En route super large 11/24/2020 22

Conclusions • The COCR has been the basis for evaluating technologies • Evaluation Scenarios have been used to assess technologies against the requirements in an equitable way • The choice of the appropriate scenario was dependent on the technology 11/24/2020 23

Thank You … 11/24/2020 24