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Method and apparatus for performing timing synchronization in a wireless communication system

  • US 8,310,983 B2
  • Filed: 01/13/2010
  • Issued: 11/13/2012
  • Est. Priority Date: 12/28/2009
  • Status: Active Grant
First Claim
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1. A method for timing synchronization in a base station comprising a radio subsystem that is coupled to a plurality of digital subsystems via a link not dedicated to timing synchronization, the method comprising:

  • at the radio subsystem;

    receiving, from a first digital subsystem of the plurality of digital subsystems, a first signal via the link;

    determining a time difference between the first signal and a second signal sourced by a second digital subsystem of the plurality of digital subsystems;

    sending, via the link, an indication of the time difference to at least one of the plurality of digital subsystems;

    at the at least one of the plurality of digital subsystem;

    inputting the indication of the time difference received from the radio subsystem to a phase locked loop (PLL); and

    synchronizing the base station with the second signal based on an output from the PLL.

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