A communication control device comprising: circuitry configured to perform radio communication with one or more apparatuses using communication resources of a primary system, and generate first likelihood information for notifying a secondary system of the likelihood of presence of available communication resources of a first primary system, and second likelihood information for notifying the secondary system of information about the likelihood of presence of available communication resources of a second primary system, wherein the secondary system is different to both the first primary system and the second primary system, the secondary system secondarily using the communication resources of available communication resources of primary systems, and the second primary system is different to the first primary system; and transmit the first likelihood information and the second likelihood information; wherein the first likelihood information and the second likelihood information are transmitted in system information using a frequency band of the first primary system; and the communication control device is further configured to generate and transmit, in a downlink control channel, resource information for notifying the secondary system of available resource blocks of the first primary system. circuitry configured to perform radio communication with one or more apparatuses using communication resources of a primary system, and generate first likelihood information for notifying a secondary system of the likelihood of presence of available communication resources of a first primary system, and second likelihood information for notifying the secondary system of information about the likelihood of presence of available communication resources of a second primary system, wherein the secondary system is different to both the first primary system and the second primary system, the secondary system secondarily using the communication resources of available communication resources of primary systems, and the second primary system is different to the first primary system; and transmit the first likelihood information and the second likelihood information; perform radio communication with one or more apparatuses using communication resources of a primary system, and generate first likelihood information for notifying a secondary system of the likelihood of presence of available communication resources of a first primary system, and second likelihood information for notifying the secondary system of information about the likelihood of presence of available communication resources of a second primary system, wherein the secondary system is different to both the first primary system and the second primary system, the secondary system secondarily using the communication resources of available communication resources of primary systems, and the second primary system is different to the first primary system; and transmit the first likelihood information and the second likelihood information; wherein the first likelihood information and the second likelihood information are transmitted in system information using a frequency band of the first primary system; and the communication control device is further configured to generate and transmit, in a downlink control channel, resource information for notifying the secondary system of available resource blocks of the first primary system. the first likelihood information and the second likelihood information are transmitted in system information using a frequency band of the first primary system; and the communication control device is further configured to generate and transmit, in a downlink control channel, resource information for notifying the secondary system of available resource blocks of the first primary system.