Invention Grant
- Patent Title: Base station apparatus, terminal apparatus, wireless communication system and integrated circuit
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Application No.: US14646464Application Date: 2013-12-03
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Publication No.: US10284266B2Publication Date: 2019-05-07
- Inventor: Hiromichi Tomeba , Takashi Onodera , Minoru Kubota
- Applicant: Sharp Kabushiki Kaisha
- Applicant Address: JP Sakai
- Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee Address: JP Sakai
- Agency: Keating & Bennett, LLP
- Priority: JP2012-266832 20121206
- International Application: PCT/JP2013/082482 WO 20131203
- International Announcement: WO2014/088003 WO 20140612
- Main IPC: H04B7/0456
- IPC: H04B7/0456 ; H04B7/04 ; H04M1/725 ; H04B7/06 ; H04B7/0404 ; H04L27/00

Abstract:
A base station apparatus according to the present invention is capable of adjusting antenna gains in a horizontal direction and a vertical direction of the plurality of antennas included in the base station apparatus, by adjusting a phase and an amplitude of a signal addressed and transmitted to a terminal apparatus, stores a codebook which is shared with the terminal apparatus and describes a plurality of linear filters associated with antenna gains in the horizontal direction and antenna gains in the vertical direction, acquires control information indicating at least one out of a plurality of linear filters described in the codebook, of which notification is sent from the terminal apparatus, performs precoding on the signal addressed to the terminal apparatus, based on the control information and the first codebook, and transmits the signal subjected to the precoding.
Public/Granted literature
- US20150304001A1 BASE STATION APPARATUS, TERMINAL APPARATUS, WIRELESS COMMUNICATION SYSTEM AND INTEGRATED CIRCUIT Public/Granted day:2015-10-22
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