Patent ID: 8509178

Claim:
A method for requesting uplink resources in a wireless communication system, the method comprising: determining, by a user equipment, whether a scheduling request for requesting uplink resources to be used for uplink data transmission is triggered; if the scheduling request is triggered, generating, by the user equipment, a first set of frequency domain sequences and a second set of frequency domain sequences to represent a transmission of the scheduling request; and transmitting, by the user equipment, the first set of frequency domain sequences and the second set of frequency domain sequences in a subframe to a base station, wherein the subframe includes a first slot and a second slot, each of the first and second slot including a plurality of orthogonal frequency division multiplexing (OFDM) symbols, wherein frequency domain sequences in the first set of frequency domain sequences are generated by cyclically shifting a base sequence based on each cyclic shift amount at respective OFDM symbol of the first slot; wherein frequency domain sequences in the second set of frequency domain sequences are generated by cyclically shifting the base sequence based on each cyclic shift amount at respective OFDM symbol of the second slot; wherein subcarriers associated with the first set of the frequency domain sequences in the first slot are different from subcarriers associated with the second set of the frequency domain sequences in the second slot; and wherein the first set of frequency domain sequences is transmitted over the first slot and the second set of frequency domain sequences is transmitted over the second slot.