A communication apparatus includes circuitry which, in operation, maps one or more repetitions of control information in a search space region, and a transmitter which, in operation, transmits the one or more repetitions of the control information. The search space region includes a first plurality of sub-regions of different lengths for a largest repetition number of the control information, and a second plurality of sub-regions of different lengths for a second-largest repetition number of the control information. An interval of subframes to which the first plurality of sub-regions are mapped is greater than an interval of subframes to which the second plurality of sub-regions are mapped.