Patent ID: 8885591

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: dividing a modulation symbol sequence for the control information such that the divided sequences correspond to two slots on the PUCCH; spreading the divided modulation symbol sequence corresponding to a first slot using a first code such that the spread sequence corresponds to a plurality of single carrier frequency division multiple access (SC-FDMA) symbols; discrete-Fourier-transforming, on an SC-FDMA symbol basis, the modulation symbol sequence spread to correspond to the plurality of SC-FDMA symbols in the first slot; spreading the divided modulation symbol sequence corresponding to a second slot using a second code such that the spread sequence corresponds to a plurality of SC-FDMA symbols; discrete-Fourier-transforming, on an SC-FDMA symbol basis, the modulation symbol sequence spread to correspond to the plurality of SC-FDMA symbols in the second slot; and transmitting discrete-Fourier-transformed signals through the corresponding SC-FDMA symbols in the first and second slots, wherein the length of the first code is fixed irrespective of the number of the SC-FDMA symbols for the PUCCH transmission, and wherein the length of the second code is varied according to the number of SC-FDMA symbols for PUCCH transmission.