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:
Apr. 25, 2023

Filed:

Aug. 07, 2017
Applicant:

Ntt Docomo, Inc., Tokyo, JP;

Inventors:

Keisuke Saito, Tokyo, JP;

Kazuaki Takeda, Tokyo, JP;

Kazuki Takeda, Tokyo, JP;

Satoshi Nagata, Tokyo, JP;

Chongning Na, Beijing, CN;

Assignee:

NTT DOCOMO, INC., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 72/04 (2023.01); H04L 5/00 (2006.01); H04B 7/0413 (2017.01); H04W 16/28 (2009.01); H04L 27/26 (2006.01); H04L 27/22 (2006.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01); H04B 7/0452 (2017.01);
U.S. Cl.
CPC ...
H04L 5/0051 (2013.01); H04B 7/0413 (2013.01); H04L 5/0048 (2013.01); H04L 27/22 (2013.01); H04L 27/26 (2013.01); H04L 27/2607 (2013.01); H04L 27/2613 (2013.01); H04L 27/2695 (2013.01); H04W 16/28 (2013.01); H04W 72/04 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04B 7/0452 (2013.01);
Abstract

This user terminal is provided with: a reception unit that receives a downlink signal including a demodulation reference signal; a signal separation unit that separates the demodulation reference signal from the downlink signal; and a channel estimation unit that calculates a channel estimation value by using the demodulation reference signal. The demodulation reference signal is mapped on a resource element set in a transmission pattern selected from a plurality of candidate patterns. The reception unit receives an index indicating the transmission pattern, and the signal separation unit separates the demodulation reference signal by using the transmission pattern specified on the basis of the index.


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