A radio communication device including: a first memory to store a plurality of program modules into which a first program is divided, the first program providing a first radio access technology (RAT), a second memory to store a second program providing a second RAT for executing, a first processor to input a command to a second processor when a RAT used by the radio communication device is changed from the second RAT to the first RAT, the second processor to execute a program or a program module that is stored in the second memory, wherein the first processor predicts the command based on a communication state of the radio communication device, selects at least one preferential program module among the plurality of program modules based on the predicted command, and controls to load the at least one preferential program module from the first memory to the second memory preferentially.