A radio resource management system is disclosed and can include a receiver to receive a plurality of registration requests, each of the registration requests being from a separate one of a plurality of radio communication devices. The receiver is configured to further to receive, prior to receiving a spectrum assignment request from a first radio communication device among the plurality of radio communication devices, location information and radio information from the plurality of radio communication devices. The radio resource management system can also include a transmitter and a processor. The processor is configured to determine available spectrum based on the radio information and the location information and to cause the transmitter to transmit a spectrum assignment to the first radio communication device based on the available spectrum.