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System and method for frequency management in a communications positioning device

  • US 6,867,734 B2
  • Filed: 05/15/2003
  • Issued: 03/15/2005
  • Est. Priority Date: 05/17/2002
  • Status: Active Grant
First Claim
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1. A system for generating a frequency reference in a hybrid communications device, comprising:

  • a clock source generating a clock signal at a base frequency;

    a communications receiver, the communications receiver performing communications processing based on an input of the clock signal at the base frequency, the communications receiver generating frequency tracking data;

    a positioning receiver, the positioning receiver performing positioning processing based on an input of the clock signal at the base frequency; and

    a processor, the processor communicating with the communications receiver and the positioning receiver, the processor transmitting a control message to the positioning receiver to adapt positioning processing based on the frequency tracking data.

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