Patent ID: 8526381

Claim:
A method for managing a multi-carrier in a base station of a communication system supporting the multi-carrier, the method comprising: receiving channel quality information of the multi-carrier from a terminal; determining an average value of channel quality information of each carrier; determining a new primary carrier based on the average value of channel quality information of each carrier; and transmitting control information directing the terminal to change a primary carrier from a current primary carrier to the new primary carrier through the current primary carrier, wherein the control information includes information on the new primary carrier, and wherein the determining of the new primary carrier includes: averaging channel quality information of each carrier during a measurement window period; electing carriers having average values that are larger than an average value of the current primary carrier among average values of the channel quality information of the multi-carrier; and determining a primary carrier to be a carrier having a value that is smaller than the predetermined load distribution value as the new primary carrier.