Ofdma apparatus and method thereof for performing ofdm based communication in wireless communication system

Abstract

Embodiments herein provide an Orthogonal Frequency Division Multiple Access (OFDMA) method for performing Orthogonal Frequency Division Multiplexing (OFDM) based communication in a wireless communication system, comprising allocating by an OFDM apparatus a resource for data in a two-step frequency-domain assignment process as (a) indicating at least one subband, and (b) indicating at least one Resource Blocks (RBs) within the at least one subband.

What is claimed is: 
     
         1 . An Orthogonal Frequency Division Multiple Access (OFDMA) method for performing Orthogonal Frequency Division Multiplexing (OFDM) based communication in a wireless communication system, comprising:
 allocating by an OFDM apparatus a resource for data in a two-step frequency-domain assignment process as:
 (a) indicating at least one subband, and 
 (b) indicating at least one Resource Blocks (RBs) within the at least one subband. 
   
     
     
         2 . The method of  claim 1 , wherein the at least one subband is based on a first bitmap and the at least one RB within the at least one subband is based on a second bitmap. 
     
     
         3 . The method of  claim 2 , wherein the first bitmap indicates a location of at least one numerology and the second bitmap indicates a location of the data within the at least one numerology. 
     
     
         4 . The method of  claim 2 , wherein the first bitmap corresponds search space that contains the second bitmap to identify a location of the data in the at least one subband of a carrier bandwidth. 
     
     
         5 . The method of  claim 2 , wherein a combination of the first bitmap and the second bitmap is used to identify a location of the data in the at least one subband of a carrier bandwidth. 
     
     
         6 . The method of  claim 2 , wherein the first bitmap is one of a one-to-one mapping of bits and a group of bits mapping to an index. 
     
     
         7 . The method of  claim 2 , wherein the second bitmap is one of a one-to-one mapping of bits and a group of bits mapping to an index. 
     
     
         8 . The method of  claim 1 , wherein a number of RBs in each of the subbands is determined based on a numerology associated with corresponding subband. 
     
     
         9 . An Orthogonal Frequency Division Multiple Access (OFDMA) apparatus for performing Orthogonal Frequency Division Multiplexing (OFDM) based communication in a wireless communication system, comprising:
 a memory;   a processor; and   a mixed-numerology scheduler, coupled to the memory and the processor, configured for:   allocating by an OFDM apparatus a resource for data in a two-step frequency-domain assignment process as:
 (a) indicating at least one subband, and 
 (b) indicating at least one Resource Blocks (RBs) within the at least one subband. 
   
     
     
         10 . The OFDMA apparatus of  claim 9 , wherein the at least one subband is based on a first bitmap and the at least one RB within the at least one subband is based on a second bitmap. 
     
     
         11 . The OFDMA apparatus of  claim 10 , wherein the first bitmap indicates a location of at least one numerology and the second bitmap indicates a location of the data within the at least one numerology. 
     
     
         12 . The OFDMA apparatus of  claim 10 , wherein the first bitmap corresponds search space that contains the second bitmap to identify a location of the data in the at least one subband of a carrier bandwidth. 
     
     
         13 . The OFDMA apparatus of  claim 10 , wherein a combination of the first bitmap and the second bitmap is used to identify a location of the data in the at least one subband of a carrier bandwidth. 
     
     
         14 . The OFDMA apparatus of  claim 10 , wherein the first bitmap is one of a one-to-one mapping of bits and a group of bits mapping to an index. 
     
     
         15 . The OFDMA apparatus of  claim 10 , wherein the second bitmap is one of a one-to-one mapping of bits and a group of bits mapping to an index. 
     
     
         16 . The OFDMA apparatus of  claim 9 , wherein a number of RB's in each of the subbands is determined based on a numerology associated with corresponding subband.