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Macro-Network Location Determination, Local-Oscillator Stabilization, and Frame-Start Synchronization Based on Nearby FM Radio Signals

  • US 20120201195A1
  • Filed: 02/08/2011
  • Published: 08/09/2012
  • Est. Priority Date: 02/08/2011
  • Status: Active Grant
First Claim
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1. A method carried out by a base station, wherein the base station provides service in a coverage area of a macro network, and wherein the base station is located within a given telecommunications market, the method comprising:

  • receiving a plurality of FM radio signals, wherein each of the FM radio signals is broadcast at a certain broadcast frequency by an FM radio station in the given telecommunications market;

    for each received FM radio signal, determining an angle of arrival of the FM radio signal at the base station;

    sending a location request to a network operations center, wherein the location request comprises the broadcast frequency and the determined angle of arrival for each of the FM radio signals; and

    receiving a response to the location request from the network operations center, wherein the response indicates the geographic location of the first base station, and wherein the broadcast frequency and the determined angle of arrival for each of the FM radio signals are both used as a basis to determine the geographic location.

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