Patent ID: 8780747

Claim:
A method of controlling uplink access in a wireless communication system, the method comprising: generating an access probability sequence consisting of an access probability determined with respect to a radio resource used for data transmission; transmitting data according to the access probability included in the access probability sequence; receiving a success/failure result on the data transmission; and regulating the access probability used in the data transmission according to the success/failure result, wherein the radio resource comprises any one of at least one time slot, frequency, and code, wherein the access probability is determined by a back-off counter value and a back-off counter decrement value independently controlled in each time slot, and wherein the back-off counter value means a value for admitting data transmission in a time slot if the back-off counter value is less than a specific value, and the back-off counter decrement value means a value for decreasing the back-off counter value if a channel is not used at the time slot.