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Next Generation Air/Ground Communications (NEXCOM)

Learn about the NEXCOM acquisition program, system elements, voice features, and data link transition presented at ATN 2002. Discover NEXCOM objectives, program elements, and the transition plan for this vital technology.

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Next Generation Air/Ground Communications (NEXCOM)

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  1. 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

  2. Overview • NEXCOM Acquisition Program Update • Program Objectives • Program Elements • Transition to NEXCOM • NEXCOM Voice Features • Basic Voice • Enhanced Voice • NEXCOM Data Link Transition

  3. 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

  4. 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

  5. NEXCOM Multimode Digital Radio

  6. 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

  7. NEXCOM Avionics Airlines Airlines FAA/Manufacturer Agreements General Aviation Business Aviation

  8. 01010101001 NEXCOM System Demonstration Program Objectives • Oct 02: VDL Mode 3 Technology viability • Oct 03: NEXCOM Architecture feasibility • Oct 04: Operational suitability

  9. 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

  10. 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”

  11. 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

  12. 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

  13. 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

  14. Discussion

  15. Spectrum Depletion The FAA predicts VHF Spectrum Saturation in the National Airspace System by 2009

  16. 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

  17. 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

  18. 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

  19. 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

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