BASE STATION DEVICE, USER DEVICE, AND METHOD USED IN MOBILE COMMUNICATION SYSTEM

摘要

A base station device includes: reception means for receiving an uplink reference signal transmitted at a certain cycle Tref from a user device; means for preparing transmission power control information indicating whether to modify the transmission power Pref of the uplink reference signal to be transmitted later, according to the reception quality of the uplink reference signal transmitted at a certain moment; means for obtaining first offset power information so that an uplink control signal is transmitted by the uplink reference signal transmission power added by a first offset power ?_L1L2; means for obtaining second offset power information so that an uplink data signal is transmitted by the power Pref added by a second offset power ?_data; and means for reporting the transmission power control information, the ?_L1L2, and the ?_data to a user device. The transmission power control information is reported to the user device with a cycle longer than Tref.