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:
Dec. 14, 2021
Filed:
Jan. 17, 2020
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Wen Tong, Ottawa, CA;
Ming Jia, Ottawa, CA;
Jianglei Ma, Kanata, CA;
Peiying Zhu, Kanata, CA;
Hua Xu, Nepean, CA;
Dong-Sheng Yu, Ottawa, CA;
Hang Zhang, Nepean, CA;
Mo-Han Fong, L'Orignal, CA;
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 48/08 (2009.01); H04B 7/0413 (2017.01); H04W 72/04 (2009.01); H04W 72/08 (2009.01); H04W 74/06 (2009.01); H04L 5/02 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0478 (2013.01); H04B 7/0413 (2013.01); H04B 7/0617 (2013.01); H04B 7/0619 (2013.01); H04B 7/0671 (2013.01); H04B 7/0673 (2013.01); H04B 7/0691 (2013.01); H04L 5/005 (2013.01); H04L 5/0028 (2013.01); H04L 5/023 (2013.01); H04W 48/08 (2013.01); H04W 72/042 (2013.01); H04W 72/08 (2013.01); H04W 74/06 (2013.01); H04L 5/006 (2013.01); H04L 5/0007 (2013.01); H04L 5/0023 (2013.01); H04L 27/2601 (2013.01); H04W 72/044 (2013.01);
Abstract
Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback.