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Methods and apparatuses for measuring frequencies of basestations in cellular networks using mobile GPS receivers

  • US 20060121922A1
  • Filed: 01/24/2006
  • Published: 06/08/2006
  • Est. Priority Date: 04/15/2002
  • Status: Active Grant
First Claim
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1. A method to measure a frequency related to a basestation of a cellular communication system, the method comprising:

  • receiving, at a mobile station, at least one satellite positioning system signal;

    determining a frequency of a reference signal from a local oscillator of the mobile station from the at least one satellite positioning system signal;

    receiving, at the mobile station, a first cellular signal from the basestation, the first cellular signal being modulated upon a carrier;

    measuring a frequency of the carrier using the reference signal from the local oscillator; and

    determining a first frequency related to the basestation using the frequency of the carrier.

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