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Satellite system for vessel identification

  • US 7,483,672 B2
  • Filed: 11/26/2002
  • Issued: 01/27/2009
  • Est. Priority Date: 11/26/2001
  • Status: Expired due to Fees
First Claim
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1. A method of communicating data among a plurality of mobile platforms via at least one geostationary satellite, said method comprising the steps of:

  • establishing a plurality of geographic regions dependent upon at least one of beam coverage areas of the at least one geostationary satellite and traffic loads associated with each region;

    sending an inbound message, from one of said plurality of mobile platforms, via said at least one geostationary satellite and a base station to a control center, the inbound message including spatial information for said one mobile platform;

    consolidating, by the control center, of the inbound message, to thereby reduce a traffic volume of outbound messages associated with said inbound message; and

    sending outbound messages dependent upon the consolidated inbound message, via the base station and the at least one geostationary satellite, to a sub-set of said plurality of mobile platforms, said sub-set of mobile platforms being in at least one of (a) the same geographic region, and (b) adjacent geographic region(s), as said one mobile platform;

    wherein after the sending of the inbound message, and prior to the sending of the outbound messages, the method comprises the further steps of;

    determining a total traffic load for the plurality of mobile platforms as a function of spatial locations of the mobile platforms; and

    establishing a plurality of geographic regions, each of which contains an associated sub-set of the plurality of mobile platforms, to thereby balance, between the plurality of geographic regions, the traffic load for each of the associated sub-sets of the plurality of the mobile platforms,wherein;

    the inbound message is sent over a first geostationary satellite using the L band frequency for the mobile platforms-to-satellite up-link and the C band frequency for the satellite-to-base station down-link, andthe outbound message is sent over a second geostationary satellite using the C band frequency for the base station-to-satellite up-link and the C band frequency for the satellite-to-mobile platforms down-link.

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