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Dynamic allocation of carrier frequencies in wireless wide area networks

  • US 7,848,758 B1
  • Filed: 09/27/2005
  • Issued: 12/07/2010
  • Est. Priority Date: 09/27/2005
  • Status: Active Grant
First Claim
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1. A method comprising:

  • a first base station among a plurality of base stations in a wireless wide area network (WWAN) determining that a level of load in a wireless coverage area exceeds a load threshold; and

    responsive to determining that the level of load exceeds the load threshold, the first base station (i) obtaining a first keycode from a keycode library, wherein the first keycode then becomes unavailable to the other base stations of the plurality of base stations, (ii) identifying a carrier frequency, and (iii) using the first keycode to activate the identified carrier frequency in the wireless coverage area;

    wherein the first keycode corresponds to a license for a given base station to activate an additional frequency;

    the first base station determining whether a neighboring base station in the plurality of base stations is currently using a second keycode from the keycode library to provide service on a particular carrier frequency; and

    responsive to determining that the neighboring base station is currently using a second keycode from the keycode library to provide service on the particular carrier frequency, the first base station updating a neighbor-list message for the first base station to reflect the neighboring base station providing service on the particular carrier frequency.

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