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. 28, 2020

Filed:

Mar. 08, 2017
Applicant:

Ntt Docomo, Inc., Tokyo, JP;

Inventors:

Tatsunori Obara, Tokyo, JP;

Satoshi Suyama, Tokyo, JP;

Tatsuki Okuyama, Tokyo, JP;

Yukihiko Okumura, Tokyo, JP;

Assignee:

NTT DOCOMO, INC., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/0452 (2017.01); H04W 16/28 (2009.01); H04W 88/08 (2009.01); H04B 7/0426 (2017.01); H04W 72/08 (2009.01); H04B 7/06 (2006.01); H04W 28/18 (2009.01);
U.S. Cl.
CPC ...
H04B 7/0452 (2013.01); H04B 7/0426 (2013.01); H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04W 16/28 (2013.01); H04W 72/08 (2013.01); H04W 88/08 (2013.01); H04W 28/18 (2013.01);
Abstract

There is provided a base station that supports multi-user MIMO and performs communication with a plurality of mobile stations of a radio communication system including the base station and the plurality of mobile stations, the base station including a determination unit that determines a number of a plurality of streams to be transmitted to each of the plurality of mobile stations and parameters to be applied to each of the plurality of streams to be transmitted to each of the plurality of mobile stations based on a channel estimation value for each of the plurality of mobile stations, and a transmitter that generates a determined number of streams according to the parameters determined by the determination unit to be transmitted to the respective plurality of mobile stations.


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