A mobile communication device, comprising: a memory configured to store at least one first parameter; at least one processing core configured to control, using a cognitive radio principle, radio transmission using a first radio access technology, wherein the at least one first parameter is used in the cognitive radio principle, and an antenna configured to provide signals to a radio transceiver (14, 16) comprised in the mobile communication device, the radio transceiver (14, 16) configured to provide signals to the at least one processing core; wherein the cognitive radio principle comprises at least one of listen before talk and spectrum sensing, characterized in that the mobile communication device is configured to control radio transmission using a second radio access technology, and the at least one processing core is configured to select the at least one first parameter in dependence of at least one second parameter, wherein the at least one second parameter at least one of relates to the second radio access technology and comprises a length of a last burst or silent period of the first radio access technology, wherein the at least one first parameter comprises at least one of a time period defining how long the mobile communication device is to be silent when there is data to transmit and a time period defining how long the mobile communication device is to wait before trying again responsive to detecting traffic, wherein the at least one second parameter relating to the second radio access technology comprises at least one of a traffic profile, a backoff period, a priority level and a fairness parameter. a memory configured to store at least one first parameter; at least one processing core configured to control, using a cognitive radio principle, radio transmission using a first radio access technology, wherein the at least one first parameter is used in the cognitive radio principle, and an antenna configured to provide signals to a radio transceiver (14, 16) comprised in the mobile communication device, the radio transceiver (14, 16) configured to provide signals to the at least one processing core; wherein the cognitive radio principle comprises at least one of listen before talk and spectrum sensing, characterized in that the mobile communication device is configured to control radio transmission using a second radio access technology, and the at least one processing core is configured to select the at least one first parameter in dependence of at least one second parameter, wherein the at least one second parameter at least one of relates to the second radio access technology and comprises a length of a last burst or silent period of the first radio access technology, wherein the at least one first parameter comprises at least one of a time period defining how long the mobile communication device is to be silent when there is data to transmit and a time period defining how long the mobile communication device is to wait before trying again responsive to detecting traffic, wherein the at least one second parameter relating to the second radio access technology comprises at least one of a traffic profile, a backoff period, a priority level and a fairness parameter.