Radio base station, radio communication terminal, radio communication system, radio communication method and communication management method, using allocation

In a radio communication system that conducts a communication between a radio base station and a radio communication terminal, the radio base station and the radio communication terminal conduct communication though traffic in a shared frequency utilizing white space in addition to a dedicated frequency allocated to the radio communication system. The traffic through which the communication is established between the radio base station and the radio communication terminal includes first traffic whose bandwidth is guaranteed and second traffic whose bandwidth is not guaranteed. Radio resources of the dedicated frequency are allocated to the first traffic and radio resources of the shared frequency are allocated to the second traffic.