Title:
A feedback information calculating method for three-dimensional MIMO in a radio communications system, and a device for it
Document Type and Number:
Japanese Patent JP6231703
Kind Code:
B2
Abstract:
Disclosed herein is a method for generating channel state information at a user equipment (UE) for multiple input multiple output (MIMO) based beamforming in a wireless communication system. The method includes receiving a first pilot pattern and a second pilot pattern from a base station, selecting a precoding matrix index (PMI) and a rank indicator (RI) for each of the first pilot pattern and the second pilot pattern, configuring the RI for the first pilot pattern as an RI for a three-dimensional (3D) channel, wherein the RI for the first pilot pattern is larger than the RI for the second pilot pattern; and reselecting a PMI of the second pilot pattern on the assumption that the RI of the second pilot pattern is equal to the RI for the 3D channel and the PMI of the first pilot pattern is equal to a preselected PMI.
Inventors:
Can Ji Won
Kim Sung Nam
Kim Kite
Liquid Kill Pom
Kim hitin
Kim Sung Nam
Kim Kite
Liquid Kill Pom
Kim hitin
Application Number:
JP2016567856A
Publication Date:
November 15, 2017
Filing Date:
February 13, 2015
Export Citation:
Assignee:
LG ELECTRONICS INC.
International Classes:
H04B7/0413; H04B7/0417; H04W16/28; H04W24/10
Domestic Patent References:
| JP2015518678A | ||||
| JP6141510B2 | ||||
| JP2017502599A | ||||
| JP2016513430A |
Other References:
小原 辰徳 他,高周波数帯Massive MIMO伝送における選択ビーム数を増やした固定ビームフォーミングと固有モードプリコーディングの結合処理,電子情報通信学会技術研究報告,2014年 6月10日,第114巻,第86号,pp.299-304,RCS2014-83
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura
Minoru Takemoto
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura
Minoru Takemoto