Invention Grant
- Patent Title: Radio communication method, radio communication system, radio base station and user terminal
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Application No.: US14439427Application Date: 2013-10-04
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Publication No.: US09609641B2Publication Date: 2017-03-28
- Inventor: Yuichi Kakishima , Satoshi Nagata , Hiroki Harada
- Applicant: NTT DOCOMO, INC.
- Applicant Address: JP Tokyo
- Assignee: NTT DOCOMO, INC.
- Current Assignee: NTT DOCOMO, INC.
- Current Assignee Address: JP Tokyo
- Agency: Osha Liang LLP
- Priority: JP2012-242896 20121102
- International Application: PCT/JP2013/077123 WO 20131004
- International Announcement: WO2014/069163 WO 20140508
- Main IPC: H04L5/00
- IPC: H04L5/00 ; H04W72/04 ; H04J11/00 ; H04W16/28 ; H04W24/00 ; H04W48/00 ; H04L27/26

Abstract:
In order to minimize deterioration in the reception accuracy even when downlink signals are transmitted from transmission points to a user terminal, a radio communication method for multiple radio base stations and a user terminal capable of communicating with the radio base stations is provided. The method involves transmitting downlink control information, a UE-specific reference signal and a channel state measurement reference signal to the user terminal, transmitting information about configuration of the channel state measurement reference signal, transmitting association information in which the configuration of the channel state measurement reference signal is associated with an information element contained in the downlink control information, determining a channel state measurement reference signal that is associated with a received UE-specific reference signal based on the association information, and performing reception processing, assuming that the UE-specific reference signal and the channel state measurement reference signal are transmitted from a same radio base station.
Public/Granted literature
- US20150282133A1 RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION AND USER TERMINAL Public/Granted day:2015-10-01
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