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Interference management in a hub-spoke spot beam satellite communication system

  • US 8,542,629 B2
  • Filed: 12/07/2012
  • Issued: 09/24/2013
  • Est. Priority Date: 12/08/2011
  • Status: Active Grant
First Claim
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1. A method for conducting communications via a satellite comprising:

  • using an antenna subsystem of the satellite to provide a plurality of fixed location spot beams in a hub-spoke spot beam satellite communication system, the spot beams being assigned to beam groups according to an objective;

    wherein a first beam group comprises;

    (a) one of the spot beams illuminating a first gateway terminal, and (b) one of the spot beams illuminating a first user terminal;

    wherein a second beam group comprises;

    (a) one of the spot beams illuminating a second gateway terminal, and (b) one of the spot beams illuminating a second user terminal;

    wherein the satellite comprises a first pathway associated with the first beam group and a second pathway associated with the second beam group;

    sequentially switching at least one transmit-side switch associated with the first pathway to connect an output of the first pathway with different spot beams within the first beam group to establish traffic between a gateway and at least one user terminal, according to a first transmit beam switching pattern;

    sequentially switching at least one transmit-side switch associated with the second pathway to connect an output of the second pathway with different spot beams within the second beam group to establish traffic between a gateway and at least one user terminal, according to a second transmit beam switching pattern;

    coordinating the first transmit beam switching pattern and the second transmit beam switching pattern to avoid substantial interference between traffic transmitted to a spot beam of the first beam group on a same frequency as traffic transmitted to a spot beam of the second beam group.

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