The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2013
Filed:
Mar. 31, 2009
Alex Kuang-hsuan Tu, San Diego, CA (US);
Parag Kanade, San Diego, CA (US);
Virat Deepak, San Diego, CA (US);
Alex Kuang-Hsuan Tu, San Diego, CA (US);
Parag Kanade, San Diego, CA (US);
Virat Deepak, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
An apparatus for detecting the presence of a frequency channel is provided. The apparatus comprises an energy detection unit configured to measure receive energy over a first bandwidth and a second energy detection unit configured to measure receive energy over a second bandwidth. The apparatus further comprises a processor configured to compare the measured receive energy over the first bandwidth to a first energy threshold, to compare the measured receive energy over the second bandwidth to a second energy threshold, and to detect the presence of the frequency channel when the measured receive energies over the first and second bandwidths are above the first and second energy thresholds, respectively.