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:
Nov. 24, 2020
Filed:
Jun. 25, 2019
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Sai Sravan Bharadwaj Karri, Santa Clara, CA (US);
Swaminathan Balakrishnan, Santa Clara, CA (US);
Tarik Tabet, Los Gatos, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/04 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0456 (2013.01); H04B 7/0626 (2013.01);
Abstract
This disclosure relates to performing grouped MIMO communications in a cellular communication system. A cellular base station may select a precoding matrix for transmitting a downlink signal to a wireless device via a MIMO channel. The selected precoding matrix may have unequal weights for different MIMO subchannels. The downlink signal may be precoded using the selected precoding matrix. The precoded downlink signal may be transmitted to the wireless device via the MIMO channel. The wireless device may receive and decode the downlink signal.