Invention Grant
- Patent Title: Base station, transmission method, mobile station, and reception method
- Patent Title (中): 基站，传输方式，移动台，接收方式
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Application No.: US12680682Application Date: 2008-09-29
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Publication No.: US08462714B2Publication Date: 2013-06-11
- Inventor: Hidekazu Taoka , Mamoru Sawahashi
- Applicant: Hidekazu Taoka , Mamoru Sawahashi
- Applicant Address: JP Tokyo
- Assignee: NTT DoCoMo, Inc.
- Current Assignee: NTT DoCoMo, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Osha Liang LLP
- Priority: JP2007-258108 20071001
- International Application: PCT/JP2008/067659 WO 20080929
- International Announcement: WO2009/044704 WO 20090409
- Main IPC: H04W4/00
- IPC: H04W4/00
Abstract:
A base station communicating using multiple antennas includes a direction-of-arrival (DOA) estimation unit configured to estimate a direction of arrival based on a signal from a mobile station and to output direction-of-arrival information regarding the estimated direction of arrival; a DOA information multiplexing unit configured to multiplex the direction-of-arrival information from the direction-of-arrival estimation unit with a shared data channel to be transmitted to the mobile station; and an antenna weight multiplying unit configured to multiply a signal to be transmitted to the mobile station and including the shared data channel multiplexed with the direction-of-arrival information by antenna weights obtained based on the direction-of-arrival information from the direction-of-arrival estimation unit.
Public/Granted literature
- US20100260118A1 BASE STATION, TRANSMISSION METHOD, MOBILE STATION, AND RECEPTION METHOD Public/Granted day:2010-10-14
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