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:
Mar. 18, 2014
Filed:
Apr. 14, 2011
LI Guo, Irving, CA (US);
Hang Jin, Plano, TX (US);
Paul J. Stager, Akron, OH (US);
Neil R. Diener, Hudson, OH (US);
Matthew A. Silverman, Shaker Heights, OH (US);
Chandra Vaidyanathan, Rockville, MD (US);
Li Guo, Irving, CA (US);
Hang Jin, Plano, TX (US);
Paul J. Stager, Akron, OH (US);
Neil R. Diener, Hudson, OH (US);
Matthew A. Silverman, Shaker Heights, OH (US);
Chandra Vaidyanathan, Rockville, MD (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Interference in an unlicensed frequency band is spatially filtered out from received signals at a wireless device operating in the unlicensed frequency band. Energy received at a plurality of antennas of the wireless is device is analyzed to detect interference in the unlicensed frequency band. The detected interference is classified by type. Parameters for a nulling filter are generated or selected based on the type of interference detected in the received energy. During a time interval when it is expected to receive desired signals, the nulling filter is applied using the parameters to signals obtained from energy received at the plurality of antennas during the time interval.