A method of performing machine type communication (MTC) for a communication device in a wireless communication system comprises performing a first MTC with a network of the wireless communication system by using a first subband resource of at least one subband resource; and performing a second MTC with the network by using a second subband resource of the at least one subband resource, after performing the first MTC; wherein a carrier frequency of the communication device is switched from a carrier frequency of the first subband resource to a carrier frequency of the second subband resource before performing the second MTC with the network, when the first subband resource and the second subband resource are not in a same maximum bandwidth supported by the communication device.