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1. (WO2018128039) USER DEVICE AND BASE STATION

Pub. No.:    WO/2018/128039    International Application No.:    PCT/JP2017/043685
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Wed Dec 06 00:59:59 CET 2017
IPC: H04W 16/02
H04W 28/06
H04W 72/04
Applicants: NTT DOCOMO, INC.
株式会社NTTドコモ
Inventors: SANO, Yousuke
佐野 洋介
TAKEDA, Kazuki
武田 一樹
NAGATA, Satoshi
永田 聡
GUO, Shaozhen
グオ シャオツェン
Title: USER DEVICE AND BASE STATION
Abstract:
A reference signal transmission method is provided which takes into account interference between adjacent cells in a radio communication system that can dynamically switch between uplink communication and downlink communication. The invention relates to a user device with a transmitting and receiving unit for transmitting and receiving radio signals to and from a base station in accordance with a communication method that switches dynamically between uplink communication and downlink communication, and a muting unit which mutes uplink radio resources notified from the base station, wherein the transmitting and receiving unit transmits to the base station a demodulation reference signal in radio resources notified from the base station, and the aforementioned muted uplink radio resources correspond to downlink radio resources for transmitting a downlink demodulation reference signal subsequent to a downlink control channel in the adjacent base station.