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Satellite communication system for communicating packet data messages

  • US 7,792,487 B2
  • Filed: 06/05/2006
  • Issued: 09/07/2010
  • Est. Priority Date: 01/04/2006
  • Status: Active Grant
First Claim
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1. A satellite communication system for communicating between a plurality of user terminals comprising:

  • at least one satellite which provides multiple beams;

    a plurality of user terminals that communicate with each other, a public switched telephone network (PSTN), or a data network, via the at least one satellite;

    at least one gateway communicating with at least one user terminal over the at least one satellite wherein each of said user terminals within a given frequency band is distinguished from another of said user terminals employing orthogonal codes employed on forward channel transmissions; and

    wherein said user terminals are equipped to initiate or receive or terminate packet data messages;

    wherein each of said plurality of user terminals is handed off from one beam of said at least one satellite to another beam of said at least one satellite; and

    wherein said hand off is predicated on signal strength determined at said plurality of user terminals.

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