Patent ID: 7852743

Claim:
A method of transmitting a scheduling request in a wireless communication system, performed by a user equipment, the method comprising: configuring an uplink control channel for transmitting the scheduling request, wherein the scheduling request is contained in a subframe comprising two consecutive slots, each slot comprising a first set of orthogonal frequency division multiplexing (OFDM) symbols and a second set of OFDM symbols; and transmitting the scheduling request on the uplink control channel to a base station, wherein configuring the uplink control channel comprises, for the OFDM symbols in each slot: mapping one of a plurality of first frequency domain sequences to each OFDM symbol in the first set of OFDM symbols, thereby generating a first set of mapped frequency domain sequences, wherein each of the plurality of first frequency domain sequences is cyclic shifted relative to each of the other first frequency domain sequences; mapping one of a plurality of second frequency domain sequences to each OFDM symbol in the second set of OFDM symbols, thereby generating a second set of mapped frequency domain sequences, wherein each of the plurality of second frequency domain sequences is cyclic shifted relative to each of the other second frequency domain sequences; spreading the first set of mapped frequency domain sequences with a first orthogonal sequence, the length of the first orthogonal sequence having a value equal to the number of OFDM symbols in the first set of OFDM symbols; and spreading the second set of mapped frequency domain sequences with a second orthogonal sequence, the length of the second orthogonal sequence having a value equal to the number of OFDM symbols in the second set of OFDM symbols.