Method and Device for Component Carrier Management in a Wireless Communication System

Abstract

Provided are a method and device in which a terminal manages component carriers in a wireless communication system. The terminal receives activation pattern data indicating activation or inactivation of at least one serving cell from a base station, and activates or inactivates the at least one component carrier in accordance with the activation pattern data.

1 . A method of managing a component carrier by a user equipment in a wireless communication system, the method comprising:
 receiving activation pattern information indicating activation or inactivation of at least one serving cell from a base station; and   activating or inactivating the at least one component carrier according to the activation pattern information.   
     
     
         2 . The method of  claim 1 , wherein the activation pattern information includes an activation pattern indicating activation or inactivation of the at least one component carrier on a subframe basis. 
     
     
         3 . The method of  claim 2 , wherein the activation pattern includes a subframe-based bitmap having a length corresponding to a period. 
     
     
         4 . The method of  claim 2 , wherein the activation pattern information includes an identifier indicating the component carrier to be activated or inactivated. 
     
     
         5 . The method of  claim 4 , wherein the at least component carrier corresponds to one cell, and the component carrier to be activated or inactivated corresponds to a cell to be activated or inactivated. 
     
     
         6 . The method of  claim 5 , wherein the at least one cell is at least one serving cell, and the cell to be activated or inactivated may be a serving cell to be activated or inactivated. 
     
     
         7 . A method of managing a component carrier by a user equipment in a wireless communication system, the method comprising:
 activating at least one component carrier; and   inactivating the at least one activated component carrier according to a specific condition, wherein the specific condition is used when the user equipment autonomously determines inactivation of the at least one component carrier.   
     
     
         8 . The method of  claim 7 , wherein the specific condition includes at least one of channel quality, a buffer statue of the user equipment, a power headroom status of the user equipment, and a number of scheduling request transmission. 
     
     
         9 . The method of  claim 8 , wherein the specific condition includes a threshold for at least one of the channel quality, the buffer status of the user equipment, the power headroom status of the user equipment, and the number of scheduling request transmission. 
     
     
         10 . The method of  claim 7 , further comprising receiving information regarding the specific condition from a base station. 
     
     
         11 . The method of  claim 7 , wherein the at least one component carrier does not include a primary component carrier. 
     
     
         12 . The method of  claim 7 , wherein the at least one component carrier corresponds to at least one cell. 
     
     
         13 . The method of  claim 12 , wherein the at least one cell is at least one serving cell.