Patent ID: 8675584

Claim:
A method of establishing a radio link connection by a mobile station (MS) in a multi-carrier system supporting a carrier aggregation scheme, the method comprising: receiving, by the MS, carrier aggregation information defining a plurality of aggregated carriers; performing, by the MS, a radio link connection to a base station (BS) by using a first carrier among the plurality of aggregated carriers; determining, by the MS, whether there is an error on the radio link connection using the first carrier; and transmitting, by the MS, a signaling to the BS by using a second carrier when it is determined that the radio link connection has the error, wherein the second carrier is determined among the plurality of aggregated carriers based on a priority ranking, wherein the signaling is a radio link failure (RLF) signaling that reports a failure of the radio link connection to BS, and wherein the priority ranking is determined based on a channel state of each carrier among the aggregated carriers.