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:
Apr. 07, 2015
Filed:
Oct. 03, 2011
Satoshi Nagata, Tokyo, JP;
Yuichi Kakishima, Tokyo, JP;
Hidekazu Taoka, Tokyo, JP;
Katsutoshi Kusume, Tokyo, JP;
Satoshi Nagata, Tokyo, JP;
Yuichi Kakishima, Tokyo, JP;
Hidekazu Taoka, Tokyo, JP;
Katsutoshi Kusume, Tokyo, JP;
NTT DOCOMO, INC., Tokyo, JP;
Abstract
The present invention makes it possible to generate precoding weights reliably, even in downlink MIMO transmission using a plurality of transmitting antennas. The present invention includes: a first feedback information selection section () that, in a mode to include a PTI in a PUCCH and feed back the PTI to a radio base station apparatus for downlink MIMO transmission using a plurality of transmitting antennas, selects the same RI as the last RI that was fed back, when the value of the PTI is changed from 0 to 1; a multiplexer () that multiplexes the RI and the PTI after the change on a subframe; and a transmission section that transmits the multiplex signal to the radio base station apparatus by the PUCCH.