Mobile radio communication apparatus capable to a plurality of radio communication systems

摘要

A mobile radio communication apparatus comprises a wireless transmitter-receiver device (2) configured to perform transmission/reception of a radio signal; a signal processing device (3) including a resource to which functions are defined, wherein the resource handles at least a modem function and a protocol function, and configured to perform a signal processing necessary in the transmission/reception by use of the resource; and a controller (4) that controls said signal processing device to redefine, to the resource, another modem function and another protocol function corresponding to respective one of the mobile communication systems.