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|1. (WO2018128039) USER DEVICE AND BASE STATION|
|Applicants:||NTT DOCOMO, INC.
|Title:||USER DEVICE AND BASE STATION|
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.