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:
May. 06, 2014
Filed:
Jul. 07, 2011
Hang Jin, Plano, TX (US);
LI Guo, Irving, TX (US);
Paul J. Stager, Akron, OH (US);
Neil R. Diener, Hudson, OH (US);
Matthew A. Silverman, Shaker Heights, OH (US);
Hang Jin, Plano, TX (US);
Li Guo, Irving, TX (US);
Paul J. Stager, Akron, OH (US);
Neil R. Diener, Hudson, OH (US);
Matthew A. Silverman, Shaker Heights, OH (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
At a wireless device operating in an unlicensed frequency band, energy received at a plurality of antennas is analyzed to detect interference on a channel in the unlicensed frequency band. The type of interference detected in the received energy is determined. Parameters are then generated for a nulling filter based on the type of interference detected in the received energy. The nulling filter is applied to the received energy at the plurality of antennas to produce a spatially filtered output. The spatially filtered output is evaluated to determine whether to send a transmission on the channel in the unlicensed frequency band.