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.

Date of Patent:
Nov. 14, 2017

Filed:

Apr. 17, 2014
Applicant:

Ntt Docomo, Inc., Tokyo, JP;

Inventors:

Satoshi Nagata, Tokyo, JP;

Kazuki Takeda, Tokyo, JP;

Chunyi Wang, Beijing, CN;

Xiaolin Hou, Beijing, CN;

Atsushi Harada, Beijing, CN;

Assignee:

NTT DOCOMO, INC., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/00 (2006.01); H04L 5/14 (2006.01); H04L 5/00 (2006.01); H04W 72/04 (2009.01); H04L 1/12 (2006.01);
U.S. Cl.
CPC ...
H04L 5/14 (2013.01); H04L 1/12 (2013.01); H04L 5/0053 (2013.01); H04W 72/0446 (2013.01); H04L 5/0007 (2013.01);
Abstract

The present invention is designed to feed back feedback signals such as delivery acknowledgement signals properly even when the DL/UL configuration is reconfigured in TDD. A user terminal communicates, in time division duplexing, with a radio base station that reconfigures the DL/UL configuration, and has a judging section that judges a delivery acknowledgement in response to each DL subframe, and a feedback control section that allocates a delivery acknowledgement signal in response to each DL subframe to a UL subframe and sends feedback, and, when the number of DL subframes that correspond to a UL subframe is greater than a predetermined value in a radio frame after the reconfiguration of the DL/UL configuration, the feedback control section bundles at least part of the delivery acknowledgement signals for a plurality of DL subframes corresponding to the UL subframe, and sends feedback.


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