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:
Jun. 02, 2015
Filed:
Jun. 23, 2010
Applicants:
Yoshihisa Kishiyama, Tokyo, JP;
Teruo Kawamura, Tokyo, JP;
Motohiro Tanno, Tokyo, JP;
Inventors:
Assignee:
NTT DOCOMO, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04B 7/06 (2006.01); H04J 11/00 (2006.01); H04J 13/00 (2011.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04L 25/03 (2006.01);
U.S. Cl.
CPC ...
H04B 7/0671 (2013.01); H04J 11/003 (2013.01); H04J 13/0003 (2013.01); H04L 5/0023 (2013.01); H04L 5/0051 (2013.01); H04L 27/2613 (2013.01); H04J 13/0055 (2013.01); H04J 13/0062 (2013.01); H04L 2025/03789 (2013.01);
Abstract
Provided are a mobile terminal apparatus, a radio base station apparatus and a communication method, capable of orthogonalizing uplink reference signals between plural antennas in MIMO transmission. The mobile terminal apparatus has a reference signal generator () for generating DM-RSs using ZC sequences and a cyclic shift section () for cyclically shifting the DM-RSs by unit of plural antenna ports () to orthogonalize the DM-RSs for the antenna ports () between the antenna ports (), and the cyclically shifted DM-RSs are transmitted via the respective antenna ports () to a radio base station apparatus eNB in an uplink.