Invention Grant
- Patent Title: Mobile terminal apparatus, radio base station apparatus and radio communication method
- Patent Title (中): 移动终端装置，无线基站装置和无线通信方法
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Application No.: US14002925Application Date: 2012-02-21
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Publication No.: US09385794B2Publication Date: 2016-07-05
- Inventor: Anass Benjebbour , Satoshi Nagata
- Applicant: Anass Benjebbour , Satoshi Nagata
- Applicant Address: JP Tokyo
- Assignee: NTT DOCOMO, INC.
- Current Assignee: NTT DOCOMO, INC.
- Current Assignee Address: JP Tokyo
- Agency: Osha Liang LLP
- Priority: JP2011-047972 20110304
- International Application: PCT/JP2012/054174 WO 20120221
- International Announcement: WO2012/121008 WO 20120913
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04B7/02 ; H04B7/06 ; H04L25/03 ; H04J11/00
Abstract:
To provide a mobile terminal apparatus, radio base station apparatus and radio communication method that enable accurate precoding weights to be generated in coordinated multipoint transmission, a radio communication method of the invention is characterized in that a mobile terminal apparatus (10) performs channel estimation using a downlink reference signal, selects a PMI using the obtained channel estimation value, measures an IQI using at least the channel estimation value and the PMI, and transmits at least the PMI and IQI to a radio base station apparatus, and that the radio base station apparatus generates precoding weights using the PMI and IQI, and performs coordinated multipoint transmission utilizing MIMO transmission using the precoding weights.
Public/Granted literature
- US20140003272A1 MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD Public/Granted day:2014-01-02
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