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:
Jul. 22, 2014
Filed:
Aug. 24, 2011
Applicants:
Chandra-prakash Gupta, Bochum, DE;
Martin Kosakowski, Bochum, DE;
Ernst Slawomir Zielinski, Bochum, DE;
Inventors:
Chandra-Prakash Gupta, Bochum, DE;
Martin Kosakowski, Bochum, DE;
Ernst Slawomir Zielinski, Bochum, DE;
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/02 (2006.01); H04L 27/06 (2006.01); H04B 7/06 (2006.01); H04L 25/03 (2006.01); H04L 1/00 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04L 25/03 (2013.01); H04L 1/0026 (2013.01); H04L 27/2647 (2013.01); H04B 7/0639 (2013.01); H04L 1/0031 (2013.01); H04B 7/063 (2013.01);
Abstract
A method for estimating channel state information (CSI) for a communication channel is disclosed. Theoretical channel capacities are calculated using combinations of rank indicator (RI) and precoding matrix index (PMI) values. A number of these theoretical channel capacities are selected and used for determining an optimum combination of channel quality indicator (CQI) values, RI values and PMI values. This combination of values is subsequently transmitted as CSI.