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.:

US 8725186 B1

PDF
Full Text
Expired
Date of Patent:
May. 13, 2014

Filed:

Sep. 18, 2009
Applicants:

Hidekazu Taoka, Tokyo, JP;

Yuichi Kakishima, Kanagawa, JP;

Hiroyuki Kawai, Yokosuka, JP;

Kenichi Higuchi, Saitama, JP;

Mamoru Sawahashi, Yokohama, JP;

Inventors:

Hidekazu Taoka, Tokyo, JP;

Yuichi Kakishima, Kanagawa, JP;

Hiroyuki Kawai, Yokosuka, JP;

Kenichi Higuchi, Saitama, JP;

Mamoru Sawahashi, Yokohama, JP;

Assignee:

NTT DoCoMo, Inc., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a base station apparatus capable of preventing degrading of throughput performance even when feedback information amount on precoding in uplink MIMO transmission is reduced. This base station () has a scheduler () for determining resource blocks used in wireless communications with each mobile station () adaptively, a precoding weight selecting section () for selecting a precoding weight for controlling phase and/or amplitude of a transmission signal for each antenna in the mobile station () based on reception quality on uplink at the resource blocks determined to the mobile station (); and transmission/reception sections (and) for transmitting the determined precoding weight to the mobile station ().


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Taoka, Hidekazu. (2014). Base station apparatus, user equipment and precoding method (U.S. Patent No. 8725186). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8725186

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