Patent ID: 8644331

Claim:
An apparatus for transmitting a ranging channel in a wireless communication system, the apparatus comprising: a radio frequency (RF) unit configured to at least transmit or receive a radio signal; and a processor coupled to the RF unit and configured to allocate the ranging channel to one ranging subband of a frequency domain, the one ranging subband determined based on a cell identifier (ID) of a cell and a number of allocated subbands, the number of allocated subbands determined based on a number of allocated subband contiguous resource units (CRUs), wherein the ranging subband has an index calculated by the equation: I SB =mod(cellID, X SB ), wherein I SB indicates subband indices 0 , . . . , X SB −1 among X SB subbands of the frequency domain, wherein cellID indicates the cell ID of the cell, wherein cellID is an integer from 0 to 767, wherein X SB indicates the number of allocated subbands, and wherein mod (cellID, X SB ) is a remainder obtained by dividing the cell ID of the cell by X SB .