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Terminal mode assignment for a satellite communications system

  • US 8,442,432 B2
  • Filed: 11/10/2009
  • Issued: 05/14/2013
  • Est. Priority Date: 11/10/2008
  • Status: Active Grant
First Claim
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1. A method of selecting a mode for a terminal in a satellite communications network, the method comprising:

  • identifying a set of modes that are supported by the terminal, each mode comprising a different combination of one of a plurality of modulation schemes supported at the terminal and one of a plurality of carrier groups supported at the terminal;

    identifying a signal quality metric associated with a communications link between the terminal and the satellite;

    calculating a baseline signal quality metric for the terminal comprising the identified signal quality metric less a margin;

    identifying a minimum mode signal quality metric for each of at least a subset of the modes of the set;

    eliminating modes of the at least the subset where the minimum mode signal quality metric is greater than the baseline signal quality metric; and

    selecting the mode for the terminal from remaining modes of the at least a subset according to a selection criteria, wherein the selection criteria comprises selecting, when a plurality of modes with different modulation schemes comprises the remaining modes, the mode for the terminal comprising a mode with a highest order modulation scheme of the remaining modes.

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