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RTCA SC-214 / EUROCAE WG-78

Advanced Data Communication

Baseline 2 Standards

ICAO NAT – PBCS Workshop, Feb 2013

Presented by Jerome CONDIS

RTCA SC-214 / EUROCAE WG-78 Co-chair

1 WG78/SC214 Baseline 2 Standards ICAO NAT - PBCS Feb 2013

Overall context

2

SC214/WG78 mission

Deliver Safety Performance Requirements (SPR) and Interoperability requirements (Interop) for Advanced Data Link Air Traffic Services (ATS) to support

NextGen

SESAR

Future oceanic/remote operations

ICAO GANP (Baseline 2 pertains to ICAO Block 1 for B1-15 Improved airport operations & B1-40 improved traffic synchronization and TBO)

Define data link services and applications independent, to the maximum extent practical, from the underlying network technology

Support implementation of aircraft data comm systems that will operate in both continental and oceanic environments (i.e. convergent SPR/Interop Standards), for all types of airspaces (Airport, TMA, domestic en-route & oceanic en-route)

ICAO NAT - PBCS Feb 2013 WG78/SC214 Baseline 2 Standards

Scope (services)

3


FIS

AD

S-C

CP

DL

CC

MA

DLIC

ACM

AMC

CRD

DCL

D-TAXI

4DTRAD

D-OTIS

IER

Convergent SPR

Baseline 2

Current Oceanic SPR

ED122/D0306

FIS

AD

S-C

CP

DL

CA

FN

DLIC

CE, CT, TC

PR

Current Domestic SPR

ED120/D0290

FIS

AD

S-C

CP

DL

CC

MA

DLIC

ACM

AMC

ACL

DCL

FLIPINT

D-ATIS

Exclu

de

dfro

mA

TN

B1

(SE

S D

LS

IR)

D-HZWX

D-RVR

CPDLC for ITP

CPDLC for FIM & ITP

CRD

OCL

PR IER

Deliverables (1/2)

4

Supporting current operations

Change 1 to ED122/DO306 (Oceanic SPR)

ITP messages and procedures

Rev A of ED154/DO305 (Mixed Interop ATN & FANS-1/A) and

Change 1 to ED110B/DO280B (ATN B1 Interop)

Seamless transfers between FANS 1/A and ATN B1 airspaces


2010 2011 2012 2013

Change 1 to ED122/DO306

Dec 2010

Rev A of ED154/DO305

Jun 2012

Change 1 to ED110B/DO280B

Jun 2013

Deliverables (2/2)

5

Baseline 2 standards

Advanced ATS Data Communication SPR

Safety and Performance Requirements independent from technology

Advanced ATS Data Communication Interop Via ATN

Interoperability Requirements (including backwards compatibility with B1)

Advanced ATS Data Communication Interop Via a Mix of ATN and FANS-1/A

Interoperability Requirements supporting FANS 1/A aircraft in B2 airspace and seamless transfers between FANS 1/A & ATN ATC Centers


2010 2011 2012 2013

Draft V0.H (Baseline for Validation)

Feb 2010

Draft v0.I (updated version)

Feb 2012

v1

Mar 2014

CPDLC Msg Set

6

Starting from PANS ATM (ICAO Doc 4444) Ed 15th

New CPDLC message elements created and some existing CPDLC message elements modified to support new ATS Data Link services, e.g.

4DTRAD (4D Trajectory exchanges)

D-TAXI (Taxi route clearances and information)

Departure Clearance (DCL)

Oceanic Clearance (OCL)

CPDLC for In Trail Procedure (ITP)

CPDLC for Flight Interval Management (FIM)

Message set enriched to encompass lessons learnt from current operations (e.g. new message elements defined as standardize Free Text or deletion of unused messages as in GOLD v1)

To ensure that Baseline 2 CPDLC Message Set will fulfill the operational needs and support worldwide ATS Datalink operations


CPDLC Msg Set

7

WG78/SC214 effort for rationalization

Prompted by OPLINKP in 2010, assessment of the operational need for each message, leading to message deletions, revisions and additions

Relying on an operational assessment

Analysis coordinated by WG78/SC214 with wide inputs from

Pilots

Human factors specialists

Controllers (Eurocontrol, FAA, ISAVIA acting as NAT representative, NATS, Nav Canada, Airways New Zealand, Air Service Australia…)

ANSPs representatives (taking credit from both FANS 1/A and ATN B1 operations)

Ground systems specialists, and

Aircraft manufacturers


CPDLC Msg Set

8

WG78 / SC214 closely coordinated with ICAO OPLINKP Initiated at OPLINKP-WG/WHL 1 in October 2010

Iterative exchanges have occurred to support validation and rationalization of the CPDLC message set

OPLINKP-WG/WHL 2 (May 2011) and WHL 3 (Oct 2011) Initial coordination about the CPDLC message set assessment

OPLINKP-WG/WHL 4 (Mar 2012) Full review of a “redline” version of the message set

Apr 2012 - May 2012 1st review of proposed CPDLC message set by ICAO OPLINKP member states and their representatives

Comments received from AENA (Spain), ENAV (Italy), Federal Aviation Administration (USA), NavCanada (Canada), Naviair (Denmark) and industry (e.g., SESAR, Airbus, Boeing)

ATNS (South Africa) and DECEA (Brazil) responded without recommending any changes

OPLINKP-WG/WHL 5 (Sep 2012) Further updates of CPDLC message set according to comments.

Nov 2012 – Jan 2013 2nd review of updated CPDLC message set by ICAO OPLINKP member states and their representatives

Comments received from NATS (UK), ATNS (South Africa), NavCanada (Canada) and industry

OPLINKP-WG/WHL 6 (Mar 2013) Consolidation of CPDLC message set according to comments


CPDLC Msg Set

9 ICAO NAT - PBCS Feb 2013 WG78/SC214 Baseline 2 Standards

227 UM ----------------

245 UM

Including

18 Reserved

117 DM -----------------

118 DM

Including

1 Reserved

271 UM --------------------

56 New messages

PANS ATM Messages

40 modified

12 Not required

18 Reserved

135 DM --------------------

PANS ATM Messages

18 Replaced

7 not required

1 Reserved

255 UM ---------------------

90 New Messages

PANS ATM Messages

77 replaced

59 not required

19 Reserved

114 DM ---------------------

40 New Messages

PANS ATM Messages

33 replaced

39 not required

1 Reserved

Latest draft (Jan 2013) Draft v0.H (Feb 2010) Doc 4444 Ed. 15th

With about the

same total

number of

messages, the

proposed

CPDLC message

set maintains the

current

capabilities and

supports new

ones

ADS-C definition

10

WG78/SC214 effort for convergence

Maintaining services offered by FANS 1/A ADS-C, while

considering lessons learnt

Introducing new capabilities to support

advanced Trajectory Based Operations

ADS-C Extended Projected Profile

ETAmin-max

New ADS-C events


• Containing FMS active Flight

Plan data

• 1 to 128 waypoints with

predictions, and

• Some aircraft information

(gross weight, speed

schedule…)

• Replacing FANS 1/A

Intermediate Projected

Intent report

• Provides early and latest

ETA on a given waypoint

• Changes relative to last

downlinked value • Waypoint change

• Speed change

• EPP change

• FOM change

• Level change

• Changes relative to fixed

threshold(s) • Lateral deviation

• Vertical rate deviation

• Level range deviation

• Vertical clearance deviation

• Aircraft out of vertical

boundaries

• Speed range deviation

RCP/RSP

in Baseline 2

11

SC214/WG78 Operational Performance Assessment (OPA) RCP for CPDLC, RSP for ADS-C and RIP for FIS

Communication Transaction Time Maximum transaction time

Nominal transaction time (95%)

Continuity, Availability and Integrity

Allocations to human and technical ATM/CNS elements (i.e. the aircraft system, aircraft operator, ATS Provider and Air-Ground Communications Service Provider), statistically for Transaction Time


CPDLC

RCP120 and RCP-DCL

RCP 240 and RCP400

ADS-C

RSP120

RSP180 and RSP400

FIS

RIP-OTR, RIP180 and

RIP400

New

Reused or

derived from

DO306/ED12

2

RCP/RSP

in Baseline 2


RCP communication Transaction Time,

99.9% Continuity and 95% Probability

RCP Specification RCP120 RCP-DCL

Transaction Time

Parameter

ET (sec)

C=99.9%

TT (sec)

P=95%

ET (sec)

C=99.9%

TT (sec)

P=95%

Transaction Time 120 57 See Note See Note

RCP Time Allocations

Initiator 30 13 See Note See Note

TRN 100 48 See Note See Note

TRN Time Allocations

Responder 88 38 See Note See Note

RCTP 32 18 See Note See Note

RCTP Allocations

ATSP 23 12 See Note See Note

ATSU 14 6 See Note See Note

ACSP 18 8 See Note See Note

Aircraft 23 10 See Note See Note

Notes

Note: Values are to be specified by each State

RCP/RSP

in Baseline 2


RSP Specification RSP120

Single/1st Periodic/Baseline report

Transaction Time

Parameter

OT (sec)

C=99.9%

DT (sec)

P=95%

Transaction Time 120 52

RSP Time Allocations

Initiator (Controller) 30 13

TRN = RSTP 100 47

TRN = RSTP Time Allocations

ATSP 23 12

ATSU 14 6

ACSP 18 8

Aircraft 95 41

RCP/RSP

in Baseline 2


RSP communication Transaction Time and Continuity

RSP Specification RSP180D

Next Periodic/Event report

RSP400D

Next Periodic/ Event report

Transaction Time

Parameter

OT (sec)

C=99.9%

DT (sec)

P=95%

OT (sec)

C=99.9%

DT (sec)

P=95%

Transaction Time 180 89 400 185

RSTP 180 89 400 185

RSP (RSTP) Time Allocations

ATSU 7 3 35 15

ACSP 157 68 378 164

Aircraft 95 41 95 41

Notes

Note 1.— For the RSP180D/400D specifications (next Periodic/Event report), the

Initiator time has been apportioned to the FMS.

Note 2.— For the RSP180D/400D specifications (Next Periodic/Event report), the

recipient is the controller.

Note 3: The bolded values represent the constraining points in the assumed statistical

distribution. The remaining points are allocated to fit the assumed distribution.

RCP/RSP

in Baseline 2


RIP communication Transaction Time,

99.9% Continuity and 95% Probability

RIP Specification RIP180

(Single/1st update report)

RIP400

(Single/1st update report)

Transaction Time

Parameter

TTmax (sec)

C=99.9%

TT95 (sec)

P=95%

TTmax (sec)

C=99.9%

TT (sec)

P=95%

Transaction Time 180 57 400 199

RIP Time Allocations

Initiator (Flight crew) 30 13 30 13

TRN = RITP 175 85 395 195

TRN = RITP Time Allocations

D-HZWX Provider 155 67 155 67

ACSP 32 14 353 153

Aircraft 74 32 74 32

Baseline 2 standards

timeline

16

Next Steps

After 5 years of work, WG78/SC214 on the finish line …

targeting release of Baseline 2 standards by Mar 2014

Two remaining opportunities to provide feedback on the proposed

standards

Apr-May 2013: WG78/SC214 review, based on a consolidated draft of SPR

& Interop documents

Sep-Oct 2013: WG78/SC214 Final Review (FRAC/Open Consultation)

Comments from ALL are more than welcomed !!!

WG78/SC214 website: http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/atc_comms_services/sc214/

Documents to review can be found under the “Current documents” section


http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/atc_comms_services/sc214/

CPDLC Msg Set

17

QUESTIONS ?


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