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Opportunistic spectrum sensing optimization for a communication system

  • US 8,155,033 B2
  • Filed: 11/28/2007
  • Issued: 04/10/2012
  • Est. Priority Date: 11/28/2007
  • Status: Active Grant
First Claim
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1. A secondary communication system seeking to share spectrum with a primary communication system, the secondary communication system comprising:

  • a plurality of subscriber units; and

    a base station communicating with the plurality of subscriber units using first and second operating modes, the second operating mode being used in conjunction with link interleaving to generate in-band sensing opportunities for the plurality of subscribers, wherein the base station groups the plurality of subscribers into a plurality of clusters, the plurality of clusters being sequentially notified of out-of-band sensing opportunities and to perform out-of-band spectrum sensing of the primary communication system'"'"'s channels, and the plurality of clusters send sensed channel data back to the base station, and the base station performs channel ranking based on the sensed channel data.

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