Method and apparatus for determining allocation of communication resources

Abstract

A user equipment (UE) receives downlink data using resource blocks in a wireless mobile communication system. The UE receives downlink control information including resource allocation information and downlink data mapped to physical resource blocks (PRBs) based on the downlink control information. The resource allocation information indicates virtual resource block (VRB) allocations for the UE. Indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs. The mapping relationship is defined based on indexes of the VRBs which are mapped to the indexes of the PRBs for a first slot of a subframe and a second slot of the subframe. The indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap. The mapping relationship includes a transformation of VRB indexes based on a matrix.

What is claimed is: 
     
         1 . A method for receiving downlink data using resource blocks at a user equipment (UE) in a wireless mobile communication system, the method comprising:
 receiving downlink control information including resource allocation information for the downlink data; 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,   wherein indexes of the PRBs to which the downlink data are mapped are determined based on a mapping relationship between virtual resource blocks (VRBs) and the PRBs,   wherein the mapping relationship is defined based on indexes of the VRBs which are mapped to the indexes of the PRBs for a first slot of a subframe and a second slot of the subframe, and   wherein the indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap,   wherein the mapping relationship includes a transformation of VRB indexes based on a matrix,   wherein a number, R, of rows of the matrix is given as:
     R=┌N   DVRB /( C·M   RBG )┐· M   RBG  
 
   
       where N DVRB  is a number of the consecutive indexes of VRBs, C is a number of columns in the matrix, and M RBG  is a number of consecutive PRBs that constitute a resource block group (RBG).