Method for scheduling distributed virtual resource blocks

1. A method for receiving downlink data using resource blocks at a user equipment in a wireless mobile communication system, the method comprising:

receiving downlink control information including resource allocation information for the downlink data from a base station; and

receiving the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information,

wherein:

the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment;

indexes of PRBs to which the downlink data are mapped are determined based on mapping relationship between VRBs and the PRBs;

the mapping relationship is defined such that indexes of the VRBs are mapped to indexes of the PRBs for a first part and a second part of a subframe and the indexes of the PRBs for the second part are separated with respect to the indexes of the PRBs for the first part based on a predetermined gap;

an index of one of the PRBs on each part that is mapped to an index of one or the VRBs is determined based on the predetermined gap and a number of the VRBs.

2. The method in claim 1 , wherein the number of VRBs is a number of distributed VRBs (DVRBs).

3. The method in claim 1 , wherein a predetermined offset is applied to an index of a PRB when the index of the PRB is equal to or greater than a predetermined threshold.

4. The method in claim 3 , wherein the predetermined threshold is N VRB/2 where N VRB is a number of consecutive indexes of the VRBs.

5. The method in claim 4 , wherein the consecutive indexes of the VRBs are interleaved.

6. The method in claim 3 , wherein the predetermined offset is defined as N gap −N VRB/2 , where N gap is a value of the predetermined gap.

7. A user equipment receiving downlink data using resource blocks in a wireless mobile communication system, the user equipment comprising:

data processing circuitry configured to control an operation of the user equipment; and

a receiver, coupled to the data processing circuitry, configured to receive downlink control information including resource allocation information for the downlink data from a base station and to receive the downlink data mapped to physical resource blocks (PRBs) based on the downlink control information,

wherein:

the resource allocation information indicates virtual resource block (VRB) allocations for the user equipment;

indexes of PRBs to which the downlink data are mapped are determined based on mapping relationship between VRBs and the PRBs;

the mapping relationship is defined such that indexes of the VRBs are mapped to indexes of the PRBs for a first part and a second part of a subframe and the indexes of the PRBs for the second part are separated with respect to the indexes of the PRBs for the first part based on a predetermined gap;

an index of one of the PRBs on each part that is mapped to an index of one or the VRBs is determined based on the predetermined gap and a number of the VRBs.

8. The user equipment in claim 7 , wherein the number of VRBs is a number of distributed VRBs (DVRBs).

9. The user equipment in claim 7 , wherein a predetermined offset is applied to an index of a PRB when the index of the PRB is equal to or greater than a predetermined threshold.

10. The user equipment in claim 9 , wherein the predetermined threshold is N VRB/2 where N VRB is a number of consecutive indexes of the VRBs.

11. The user equipment in claim 10 , wherein the consecutive indexes of the VRBs are interleaved.

12. The user equipment in claim 9 , wherein the predetermined offset is defined as N gap −N VRB/2 , where N gap is a value of the predetermined gap.