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. 21, 2017
Filed:
May. 06, 2016
Applicant:
Applied Transform, Llc, Bedford, MA (US);
Inventor:
Joon Bae Kim, Lexington, MA (US);
Assignee:
APPLIED TRANSFORM, LLC, Bedford, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04L 29/06 (2006.01); H04L 1/00 (2006.01); H04L 1/04 (2006.01); H04L 1/08 (2006.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 72/04 (2009.01); H04L 12/741 (2013.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
H04L 69/22 (2013.01); H04L 1/0042 (2013.01); H04L 1/0056 (2013.01); H04L 1/0072 (2013.01); H04L 1/04 (2013.01); H04L 1/08 (2013.01); H04L 5/0007 (2013.01); H04L 5/0037 (2013.01); H04L 5/0053 (2013.01); H04L 5/0091 (2013.01); H04L 27/2602 (2013.01); H04L 27/2608 (2013.01); H04L 45/74 (2013.01); H04W 72/04 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 84/12 (2013.01);
Abstract
A wireless OFDM transceiver uses subcarrier characteristics, such as phase and amplitude, to detect the bandwidth of a received packet. By detecting different subcarrier characteristics in the long training symbols of a packet at the receiver, the packet is associated with different bandwidths. The different bandwidths are used in a wireless network where devices can communicate using different frequency bands that overlap one another and where one is wider than the other.