Distributed scheduling architecture for multi-center time-based metering

Steven Landry, Todd Farley, John Foster, Steve Green, Ty Hoang, Gregory L. Wong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Scopus citations


The Traffic Management Advisor (TMA) is an air traffic control automation system currently in use in seven Air Route Traffic Control Centers (ARTCCs) to enable time based metering to busy airports within their airspace. However, this system is limited to operation within a single ARTCC, within about a 200 nautical mile radius of the airport, and on relatively simple streams of traffic. The need for coordinated metering within a greater (300+ nautical mile) radius of an airport, on streams of traffic with significant branching, and across ARTCC boundaries, has been identified. Early tests revealed that TMA could not simply be scaled up to handle such a problem. Instead, a loosely coupled hierarchy of schedules, in which constraints from downstream schedules are passed upstream, is required. Such an architecture reduces the reliance on distant projections of arrival times, making schedules robust to changes in sequence and to additions of aircraft (such as aircraft departing inside the system's scheduling horizon). This architecture is also scaleable, easily reconfigurable, and can be networked together. As such, it can be adapted for use in any size or configuration of airspace and with any number of airports delivering restrictions. An implementation of this distributed scheduling architecture is currently undergoing testing in the TMA-Multi Center system. This paper describes the architecture and its motivation.

Original languageEnglish (US)
Title of host publicationAIAA's 3rd Annual Aviation Technology, Integration, and Operations (ATIO) Form
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624101045
StatePublished - 2003
EventAIAA's 3rd Annual Aviation Technology, Integration, and Operations (ATIO) Forum 2003 - Denver, CO, United States
Duration: Nov 17 2003Nov 19 2003

Publication series

NameAIAA's 3rd Annual Aviation Technology, Integration, and Operations (ATIO) Forum


ConferenceAIAA's 3rd Annual Aviation Technology, Integration, and Operations (ATIO) Forum 2003
Country/TerritoryUnited States
CityDenver, CO

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering


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