A communication control device configured to control communication of one or more secondary usage nodes providing second communication services using a part of a frequency band assigned to a first communication service, the communication control device comprising: a communication unit configured to receive service area information for estimating service areas of the second communication services provided by the secondary usage nodes and access technique information indicating radio access techniques usable by the secondary usage nodes from the respective secondary usage nodes; a storage unit configured to store the service area information and the access technique information received by the communication unit; an estimation unit configured to estimate service areas of two or more second communication services using the service area information; and a control unit configured to determine whether a reconfiguration of at least one of the secondary usage nodes is necessary, and if it is necessary, the control unit is configured to notify a secondary usage node providing at least one of the two or more second communication services of information indicating at least one of a maximum power limit for at least one of the secondary usage nodes which defines the maximum transmission power at which the secondary usage node is allowed to perform radiation, a radio access technique or a channel recommended to the at least one second communication service on the basis of a location relationship between the service areas estimated by the estimation unit and the access technique information, wherein, when service areas of two second communication services overlap and radio access techniques usable by two secondary usage nodes respectively providing the two second communication services are the same, the control unit is configured to recommend use of the same radio access technique and when one of the two second communication nodes is not included in a service area of the other second communication service, the control unit is configured to cause the communication unit to transmit a synchronization signal to the two secondary usage nodes. a communication unit configured to receive service area information for estimating service areas of the second communication services provided by the secondary usage nodes and access technique information indicating radio access techniques usable by the secondary usage nodes from the respective secondary usage nodes; a storage unit configured to store the service area information and the access technique information received by the communication unit; an estimation unit configured to estimate service areas of two or more second communication services using the service area information; and a control unit configured to determine whether a reconfiguration of at least one of the secondary usage nodes is necessary, and if it is necessary, the control unit is configured to notify a secondary usage node providing at least one of the two or more second communication services of information indicating at least one of a maximum power limit for at least one of the secondary usage nodes which defines the maximum transmission power at which the secondary usage node is allowed to perform radiation, a radio access technique or a channel recommended to the at least one second communication service on the basis of a location relationship between the service areas estimated by the estimation unit and the access technique information, wherein, when service areas of two second communication services overlap and radio access techniques usable by two secondary usage nodes respectively providing the two second communication services are the same, the control unit is configured to recommend use of the same radio access technique and when one of the two second communication nodes is not included in a service area of the other second communication service, the control unit is configured to cause the communication unit to transmit a synchronization signal to the two secondary usage nodes.