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. 21, 2020

Filed:

Feb. 27, 2018
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventors:

Takashi Seyama, Kawasaki, JP;

Takashi Dateki, Yokohama, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 72/12 (2009.01); H04B 7/06 (2006.01); H04W 72/04 (2009.01); H04B 7/0452 (2017.01);
U.S. Cl.
CPC ...
H04W 72/12 (2013.01); H04B 7/0452 (2013.01); H04B 7/0617 (2013.01); H04W 72/04 (2013.01);
Abstract

A transmitter includes: a plurality of transmission antennas; a channel estimator configured to estimate channels between the plurality of transmission antennas and a plurality of receivers; a scheduler configured to schedule a combination of target receivers of transmitting downlink signals on same radio resource among the plurality of receivers; and a transmitter configured to transmit downlink signals intended for the combination scheduled by the scheduler by beam forming from the plurality of transmission antennas on the same radio resource. The scheduler modifies a selecting rule related to the combination of target receivers in accordance with a delay time of an opportunity of transmitting the downlink signal from a timing of estimating the channels.


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