Patent ID: 8855076

Claim:
A method for, at a user equipment (UE), transmitting control information through a physical uplink control channel (PUCCH) in a wireless communication system, the method comprising: spreading a first modulated symbol sequence such that the first modulated symbol sequence corresponds to a plurality of single carrier-frequency division multiplexing (SC-FDMA) symbols in a first slot, to obtain a plurality of second modulated symbol sequences corresponding to the plurality of SC-FDMA symbols; performing a discrete Fourier transform (DFT) precoding on the plurality of second modulated symbol sequences to obtain a plurality of complex symbol sequences; and transmitting the plurality of complex symbol sequences through the PUCCH, wherein scrambling is applied to the plurality of second modulated symbol sequences at SC-FDMA symbol level using multiplication of c i by a respective modulated symbol sequence of the plurality of second modulated symbol sequences, and wherein c i is a scrambling value for a corresponding SC-FDMA symbol.