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Methods and apparatuses for using mobile GPS receivers to synchronize basestations in cellular networks

DC
  • US 6,665,541 B1
  • Filed: 05/04/2000
  • Issued: 12/16/2003
  • Est. Priority Date: 05/04/2000
  • Status: Expired due to Term
First Claim
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1. A method for performing time synchronization between at least two basestations comprising a first basestation and a second basestation of a cellular communication system, the method comprising:

  • determining a time-of-day and a location of a first mobile cellular station;

    transmitting through a first cellular communication link the time-of-day and the location of said first mobile cellular station to said first basestation;

    determining a time-of-day of said first basestation from said time-of-day and said location of said first mobile cellular station together with a known location of said first basestation;

    determining a time-of-day and a location of a second mobile cellular station;

    transmitting through a second cellular communication link the time-of-day and the location of said second mobile cellular station to said second basestation;

    determining a time-of-day of said second basestation from said time-of-day and said location of said second mobile cellular station together with a known location of said second basestation;

    wherein said first mobile cellular station and said second mobile cellular station each utilize a co-located satellite positioning system receiver to determine said times of day and said locations of said first and second mobile cellular stations.

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