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Next Generation Air/Ground Communications (NEXCOM). Presented to ATN 2002 London, England 25 September 2002 James H. Williams Communications Integrated Product Team Lead Federal Aviation Administration. Overview. NEXCOM Acquisition Program Update Program Objectives Program Elements

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Presentation Transcript
slide1

Next Generation Air/Ground Communications

(NEXCOM)

Presented to

ATN 2002

London, England

25 September 2002

James H. Williams

Communications Integrated Product Team Lead

Federal Aviation Administration

overview
Overview
  • NEXCOM Acquisition Program Update
    • Program Objectives
    • Program Elements
    • Transition to NEXCOM
  • NEXCOM Voice Features
    • Basic Voice
    • Enhanced Voice
  • NEXCOM Data Link Transition
nexcom objectives
NEXCOM Objectives

720 BUECs

346 Towers

793 RCAGs

1422 RTRs

175 TRACONs

1854 RCOs

61 AFSSs, 14 FSSs

  • National Airspace System Infrastructure Sustainment
  • National Airspace System Infrastructure Modernization
nexcom acquisition program elements

Multimode Digital Radio

Ground System

VHF T/R

Radio

Interface

Unit

Ground

Network

Interface

Analog & digital modes in one radio

01010101001

NEXCOM Acquisition Program Elements

Digital capability

System Demo Program

Avionics

  • Show NEXCOM system architecture and commercial avionics viability

Analog & digital in single cockpit radio

slide6

CMU

Avionics

BUEC

VHF

Tx

/Rx

Radio

Interface

Unit

UHF

Tx

/Rx

NEXCOM

Ground System Segment

RCAG

Data

Voice

VHF

Tx

/Rx M/S

Radio

Interface

Unit

UHF

Tx

/Rx

M/S

Data

Voice Switch

2V2D Configuration

Combined

Voice & Data

GNI

Voice

DLAP

Data

ATN

Router

nexcom avionics
NEXCOM Avionics

Airlines

Airlines

FAA/Manufacturer Agreements

General

Aviation

Business

Aviation

nexcom system demonstration program

01010101001

NEXCOM System Demonstration Program

Objectives

  • Oct 02: VDL Mode 3 Technology viability
  • Oct 03: NEXCOM Architecture feasibility
  • Oct 04: Operational suitability
national airspace system transition to nexcom

Dem/Val

5-10 years

Next 5 years

10-15 years

15-20 years

  • Analog Voice, 25 KHz
  • Initial Datalink (VDL-2)
  • Full Operational Evaluation& Exercise of Digital Voiceand Datalink (VDL-3)
  • Maintain Terminal Analog Voice
  • Implement VDL-3Digital Voice
  • Expand Datalink VDL-2Applications
  • Expand EnrouteDigital Voice (VDL-3)
  • Initiate TerminalDigital Voice (VDL-3)
  • Increase Datalink Capacity& Capability (VDL-2 & VDL-3)
  • Expand Digital Voice (VDL-3) to all domains
  • Expand Datalink Capacityin all domainsand all applications(VDL-2 & VDL-3)
National Airspace SystemTransition to NEXCOM

Enroute High Airspace

VDL-3Link

0101010100110010101

0101010100110010101

0101010100110010101

01010101001

VDL-2 Datalink

0101

01010101001

RCAG

10011001011010101

Analog

Voice

ARTCC

01010

AFSS

National Airspace

Terminal

Airspace

nexcom key basic voice features
NEXCOMKey Basic Voice Features
  • Anti-Blocking
    • Resolution for stepped-on transmissions
  • Controller Override
    • Controller can preempt ongoing aircraft transmission
    • for urgent control message
    • Resolution for aircraft “stuck mike”
nexcom key enhanced voice features
NEXCOMKey Enhanced Voice Features
  • Enhanced Voice features require a context

management application to enable the system to

identify specific aircraft

  • Next Frequency
    • Uplink of next frequency for pilot concurrence/action
    • Coupled with CPDLC transfer of communications
  • Urgent Downlink Request
    • Cockpit-generated data message to controller that pilot has
    • an urgent transmission to make
nexcom data link transition
NEXCOMData Link Transition
  • Increased use of data link is essential to increasing the capacity of the NAS
  • CPDLC is FAA’s application for air traffic control messages
  • FAA views VDL Mode 2 and VDL Mode 3 as complementary, not competing technologies
  • CPDLC Build 1 and 1a initially will be fielded on VDL-2
    • Only viable technology in required time (2005 NAS-wide)
    • Stepping stone for data link use in air traffic control
nexcom data link transition1
NEXCOMData Link Transition
  • Growth in CPDLC Use
    • Increases system and user benefits but
    • Also drives up FAA costs
  • CPDLC on VDL-3 means
    • Predictable costs to FAA
    • No added service costs to users
  • Continued availability of CPDLC on VDL-2
    • Independence of networks a safety backup benefit
    • FAA could not continue to fund message costs
spectrum depletion
Spectrum Depletion

The FAA predicts VHF Spectrum Saturation in the

National Airspace System by 2009

frequency congestion cost and efficiency implications

25

Historically, circuit growth has

been 4% per year.

Growth in A/G Circuit Demand

Increasing cost/difficulty of

placing new circuits reduces

20

growth rate.

# Deployed A/G Circuits

Reduced growth rate implies a

less-efficient NAS.

Circuits (1000s)

15

Unsatisfied Demand

Reduces NAS Efficiency

23 spectrum recovery

initiatives (ASR)

Increasing Cost and Difficulty of

10

Provisioning New Circuits

5

1998

2003

2008

2013

2018

2023

2028

Year

Frequency Congestion Cost and Efficiency Implications
slide17

CMU

Avionics

BUEC

VHF

Tx

/Rx

Radio

Interface

Unit

UHF

Tx

/Rx

NEXCOM

System Architecture

RCAG

Data

Voice

VHF

Tx

/Rx M/S

Radio

Interface

Unit

UHF

Tx

/Rx

M/S

Data

Voice Switch

2V2D Configuration

Combined

Voice & Data

GNI

Voice

DLAP

Data

ATN

Router

slide18

NEXCOMSystem Demonstration Program

System Demo I

  • Equipment
    • Air: MITRE Prototype
    • Ground:
      • ‘99 Configuration
      • ITT MDR with FAA Prototype RIU

Oct 02 Oct 03 Oct 04

System

Demo II

System

Demo I

Operational System Demo

System Demo II

  • Equipment
    • Air:
      • MITRE & FAA Tech Center Prototypes
      • Vendor Avionics (prototype)
    • Ground:
      • ITT MDR with FAA Prototype RIU
    • DoD Participation
    • Air Carrier Participation
  • Objective:
    • Show NEXCOM system architecture viability
  • Demonstrates:
    • Sector Handoffs
    • ATN Network Interoperability
    • System Management
    • Commercial infusion
    • Technology maturation
  • Objective:
    • Show commercial avionics certifiability and operational suitability
  • Demonstrates:
    • Operational digital voice
    • Commercial avionics
    • Human factors
  • Objective:
  • Show VDL-3 technology is viable
  • Demonstrates:
    • Coverage
    • Voice Quality
    • Voice Override
    • Integrated Voice and Data

Operational System Demo

  • Equipment
    • Air: Vendor Avionics
    • Ground:
      • ITT MDR with FAA Prototype RIU & GNI
    • DoD Participation
    • Air Carrier Participation

18

nexcom schedule

1/05

Full Scale Dev Contract Award

NEXCOM Schedule

2001

2002

2003

2004

2005

2006

2007

2008

2009

System Demo

Program

10/02

System

Demo I

10/03

System

Demo II

10/04

Operational

Demo

Multimode

Digital

Radio

MDR deployment

10/02In-Service

Decision

5/03

Begin

Deployment

5/02

FAT

7/01

Contract

Award

07-12 Implementation

Validation & Inter-Operability Tests

with Airborne Avionics

GroundSystem

10/02

RPDE

Contract Award

10/01Sys Reqs

Doc

4/02SIR

Release

10/07

Keysite

12/09Operational

10/02

Draft

Characteristics

Complete

9/03AEEC

Apprvd

Char.

8/03Notice of

Availability

TSO

9/03AEEC

Approved

Char.

8/03Notice of

Availability

TSO

Avionics

8/04

CertifiedAircraft

10/01MOPS

12/01GIAs

6/05-12/09 Aircraft equip

6/03

Begin

Formal Internal

Coordination

Rule

Making

6/04

Initiate

Final Rule

6/05

Rule Published

1/04

NPRM

1/02

RTCAPrinciples of Operation