Provided are a wireless base station apparatus and communication control method whereby a peripheral terminal device immediately hands over to a base station apparatus when said base station apparatus is activated. In response to timer values and the number of terminal units within a coverage area, a controller (504) of an MeNB (500) selects a dormant mode, activation mode or stationary mode for the base station itself and notifies an uplink received signal determiner (505) and transmission power determiner (506) of the selected mode information. In activation mode, the uplink received signal determiner (505) sets the timing for initial connection signals more frequently than dormant mode. In activation mode, the transmission power determiner (506) determines the increase in downlink transmission power over time and notifies the downlink transmission signal processor (507) of the transmission power.