In management of power in a radio base station, a power allocation controller allocates a prescribed transmission power to a communication channel requested for set-up within an allocatable power range, and forgoes allocation of transmission power when allocation is not possible. A channel power controller exercises control of transmission power and, when actual transmission power falls below the transmission power allocation by the power allocation controller, returns the power difference between these powers and subsequently repeats similar control while regarding the actual transmission power to as allocated transmission power. As a result, the limited power of a radio base station can be utilized efficiently.