Patent ID: 8391250

Claim:
A method of transmitting an uplink signal at a terminal of a first user among a plurality of users in a wireless communication system, wherein the plurality of users include a second user and a third user, the method comprising: transmitting a first sequence at a first transmission time, the first sequence being determined by a basic sequence and a first cyclic shift value among a plurality of cyclic shift values; and transmitting a second sequence at a second transmission time, the second sequence being determined by the basic sequence and a second cyclic shift value among the plurality of cyclic shift values, wherein the plurality of cyclic shift values including the first cyclic shift value, the second cyclic shift value, a third cyclic shift value and a fourth cyclic shift value are predetermined in the wireless communication system, wherein the first cyclic shift value is the smallest one among cyclic shift values that are bigger than the third cyclic shift value, and the second cyclic shift value is the smallest one among cyclic shift values that are bigger than the fourth cyclic shift value, and wherein the third cyclic shift value is allocated to the second user at the first transmission time, and the fourth cyclic shift value is allocated to the third user at the second transmission time.