Wireless base station apparatus and communication method

A wireless base station apparatus to establish a wireless connection with terminal equipment, the wireless base station apparatus comprising:

• a detection unit configured to detect an intensity of a signal transmitted from another terminal equipment other than the terminal equipment;
• and
• a power calculation unit configured to calculate, as transmission power for the terminal equipment, a sum of a first parameter adjusted at an interval of predetermined time and a second parameter taking a value between a predetermined first minimum value and a predetermined first maximum value,
• wherein the power calculation unit is configured to set, as the second parameter, the larger value of the first minimum value and a difference between first target power and the first parameter when detecting that reception power of the signal transmitted from the another terminal equipment is equal to or larger than a predetermined value, and further set a difference between the first target power and the first minimum value as the first parameter and the first minimum value as the second parameter when the first parameter is adjusted.