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:
Sep. 16, 2025
Filed:
Feb. 24, 2021
Applicant:
Comcast Cable Communications, Llc, Philadelphia, PA (US);
Inventor:
David Urban, Downingtown, PA (US);
Assignee:
Comcast Cable Communications, LLC, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 5/14 (2006.01); H04B 15/00 (2006.01); H04N 7/10 (2006.01); H04N 21/2383 (2011.01); H04N 21/61 (2011.01);
U.S. Cl.
CPC ...
H04L 5/143 (2013.01); H04N 7/10 (2013.01); H04N 7/106 (2013.01); H04N 21/2383 (2013.01); H04N 21/6118 (2013.01); H04N 21/6168 (2013.01); H04B 15/00 (2013.01); H04L 5/1423 (2013.01);
Abstract
Methods and systems are disclosed for using a common frequency spectrum for simultaneous upstream and downstream communications in a network by implementing directional diversity techniques. Non-reciprocal coupling devices, such as circulators, may be configured in the network to provide unidirectional transmission of each signal to prevent interference. In some embodiments, feed-forward interference cancellation is utilized to increase signal isolation of upstream and downstream signals.