Method of handling resource allocation for MTC and related communication device

1. A method of performing machine type communication (MTC) for a communication device in a wireless communication system, the method comprising:

performing a first MTC with a cell of 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 cell of 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;

wherein the first subband resource and the second subband resource are comprised in a plurality of subband resources, and each of the plurality of subband resources are not overlapped.

2. The method of claim 1 , wherein each of the at least one subband resource is a division of physical resource managed by the network, and comprises at least one resource block (RB) in a corresponding subband.

3. The method of claim 1 , wherein the communication device is a MTC device.

4. The method of claim 1 , wherein the communication device selects and switches to the second subband resource according to at least one of a higher layer signaling transmitted by the network, a random selection, an application type performed by the communication device, capability of the communication device and a subband configuration transmitted by the network.

5. The method of claim 4 , further comprising:

replying an acknowledgement corresponding to the higher layer signaling to the network within a predetermined time interval, after receiving the higher layer signaling.

6. The method of claim 1 , wherein the communication device performs a cell search procedure when performing the first MTC, and performs a random access (RA) procedure when performing the second MTC.

7. The method of claim 1 , wherein a bandwidth of the first subband resource is approximately 1.4 MHz, and a bandwidth of the second subband resource is approximately 1.4 MHz.

8. The method of claim 1 , wherein a mapping of a plurality of resource blocks (RBs) in the first subband resource or the first subband resource is aligned with a legacy RB mapping.

9. The method of claim 1 , wherein the first subband resource comprises a first plurality of contiguous RBs, and the second subband resource comprises a second plurality of contiguous RBs.

10. The method of claim 1 , wherein the first MTC comprises a reception of first system information, the second MTC comprises a reception of second system information, and the reception of the second system information is determined according to the first system information.

11. The method of claim 10 , wherein the first system information indicates where to receive the second system information.

12. A communication device for performing machine type communication (MTC), comprising:

a storage unit for storing instructions of:

performing a first MTC with a cell of 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 cell of 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;

wherein the first subband resource and the second subband resource are comprised in a plurality of subband resources, and each of the plurality of subband resources are not overlapped; and

a processing means, coupled to the storage unit, configured to execute the instructions stored in the storage unit.

13. The communication device of claim 12 , wherein each of the at least one subband resource is a division of physical resource managed by the network, and comprises at least one resource block (RB) in a corresponding subband.

14. The communication device of claim 12 , wherein the communication device selects and switches to the second subband resource according to at least one of a higher layer signaling transmitted by the network, a random selection, an application type performed by the communication device, capability of the communication device and a subband configuration transmitted by the network.

15. The communication device of claim 14 , further comprising:

replying an acknowledgement corresponding to the higher layer signaling to the network within a predetermined time interval, after receiving the higher layer signaling.

16. The communication device of claim 12 , wherein the communication device performs a cell search procedure when performing the first MTC, and performs a random access (RA) procedure when performing the second MTC.

17. The communication device of claim 12 , wherein a bandwidth of the first subband resource is approximately 1.4 MHz, and a bandwidth of the second subband resource is approximately 1.4 MHz.

18. The communication device of claim 12 , wherein a mapping of a plurality of resource blocks (RBs) in the first subband resource or the first subband resource is aligned with a legacy RB mapping.

19. The communication device of claim 12 , wherein the first subband resource comprises a first plurality of contiguous RBs, and the second subband resource comprises a second plurality of contiguous RBs.

20. The communication device of claim 12 , wherein the first MTC comprises a reception of first system information, the second MTC comprises a reception of second system information, and the reception of the second system information is determined according to the first system information.

21. The communication device of claim 20 , wherein the first system information indicates where to receive the second system information.