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Terrestrial based air-to-ground communications system and related methods

  • US 10,230,452 B2
  • Filed: 04/24/2017
  • Issued: 03/12/2019
  • Est. Priority Date: 10/06/2014
  • Status: Active Grant
First Claim
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1. An air-to-ground communications system comprising:

  • a plurality of base stations, each comprising a ground-based transceiver and associated ground-based controller; and

    a plurality of aircraft, each comprising an aircraft-based transceiver and associated aircraft-based controller;

    a given aircraft-based controller of a given aircraft configured todetermine a position and speed of the given aircraft,determine a position of a given base station,determine an autonomous timing advance based upon the position and speed of the given aircraft and the position of the given base station, andtransmit an access signal with the autonomous timing advance to a given ground-based controller of the given base station for initial acquisition,wherein the given aircraft-based controller is configured to;

    determine an estimated propagation delay between the given aircraft and the given base station based upon the position and speed of the given aircraft and the position of the given base station; and

    determine the autonomous timing advance based upon the estimated propagation delay.

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