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. 07, 2017
Filed:
Jul. 06, 2015
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Jayesh H. Kotecha, Austin, TX (US);
Kaibin Huang, Austin, TX (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/04 (2006.01); H04B 7/06 (2006.01); H04L 12/26 (2006.01); H04W 72/04 (2009.01); H04L 5/00 (2006.01); H04L 25/03 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0478 (2013.01); H04B 7/0417 (2013.01); H04B 7/0643 (2013.01); H04L 5/0078 (2013.01); H04L 5/0094 (2013.01); H04L 43/0864 (2013.01); H04W 72/0446 (2013.01); H04B 7/0452 (2013.01); H04L 5/0007 (2013.01); H04L 5/0075 (2013.01); H04L 2025/03808 (2013.01);
Abstract
In a closed-loop wireless communication system, a codebook-based feedback control mechanism is provided where feedback from each of a plurality of receivers is scheduled to control the feedback so that the receiving devices do not needlessly feed back precoding information to the transmitting device. The feedback may be controlled by establishing and distributing a schedule to control when each receiver feeds back precoding information, or by establishing and distributing a metric-based feedback threshold that must be satisfied before feedback is permitted.