Patent ID: 8897219

Claim:
A method for transmitting a ranging signal by a user equipment (UE) in a wireless communication system, the method comprising: receiving frequency partition configuration information from a base station (BS); determining a ranging channel (RCH) in a reuse-1 frequency partition, or in a power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition, based on cell ID information (IDcell) of the BS and the frequency partition configuration information; and transmitting the ranging signal to the BS using the RCH, wherein the RCH is a non-synchronized ranging channel (NS-RCH) when the UE is not synchronized to the BS, and a frequency resource for the NS-RCH is determined according to Equation 1: I SB =mod(IDcell, R SB ) [Equation 1] where I SB is a subband index (0, . . . , (R SB −1)) for the NS-RCH from among R SB subbands, and R SB is determined by Equation 2: R SB = L SB ⁢ - ⁢ CRU , FP i 4 [ Equation ⁢ ⁢ 2 ] where L SB-CRU,FPi is a number of subband contiguous resource units (CRUs) allocated to a frequency partition FPi, and FPi is corresponding to the reuse-1 frequency partition or corresponding to the power-boosted reuse-3 frequency partition only when there is no reuse-1 frequency partition.