User device, base station device, and communication method in mobile communication system

摘要

A user device for a mobile communication system employing a multicarrier scheme includes a control signal generating unit (241, 242) generating a control signal and a transmitting unit transmitting the control signal to a base station. The control signal is mapped (245, 246) to multiple frequency bands that are provided across a subframe but discontinuous in the frequency domain (see, for example, FIG. 3 ). Each of the frequency bands includes subcarriers used in orthogonal frequency division multiplexing (OFDM).