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1. (WO2018203395) USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD

Pub. No.:    WO/2018/203395    International Application No.:    PCT/JP2017/017292
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed May 03 01:59:59 CEST 2017
IPC: H04W 72/04
Applicants: NTT DOCOMO, INC.
株式会社NTTドコモ
Inventors: SAITO, Keisuke
齊藤 敬佑
TAKEDA, Kazuaki
武田 和晃
NAGATA, Satoshi
永田 聡
Title: USER TERMINAL, WIRELESS BASE STATION, AND WIRELESS COMMUNICATION METHOD
Abstract:
A user terminal (20) is provided with: a reception unit (202) which receives a downlink signal containing a demodulation reference signal; a control unit (203) which separates the demodulation reference signal from the downlink signal; and a channel estimation unit (204) which calculates a channel estimation value using the demodulation reference signal. The demodulation reference signal is mapped to a resource element defined for a transmission pattern for a user terminal, and the transmission pattern for a user terminal is selected from among a plurality of transmission patterns for user terminals, so as to be different among the user terminals, and the demodulation reference signals to be mapped to the respective resource elements defined for the plurality of user terminal transmission patterns are configured to be mutually orthogonal to one another among the different user terminal transmission patterns.