Method and device which obtains updated system information when a component carrier has changed

Abstract

A communication system that includes a terminal apparatus and a base station apparatus. The terminal apparatus obtains, from the base station apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. The base station apparatus provides, to the terminal apparatus, information regarding addition of a component carrier, whereby the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier.

1 . A terminal apparatus comprising:
 a wireless circuit configured to and/or programmed to obtain, from a base station apparatus, information regarding addition of a component carrier, wherein
 the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. 
   
     
     
         2 . A base station apparatus comprising:
 a wireless circuit configured to and/or programmed to provide, to a terminal apparatus, information regarding addition of a component carrier, wherein
 the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. 
   
     
     
         3 . A method performed by a terminal apparatus, the method comprising:
 obtaining, from a base station apparatus, information regarding addition of a component carrier, wherein
 the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. 
   
     
     
         4 . A method performed by a base station apparatus, the method comprising:
 providing, to a terminal apparatus, information regarding addition of a component carrier, wherein
 the information regarding addition of the component carrier comprises information related to carrier frequency of the component carrier and information related to system bandwidth of the component carrier. 
   
     
     
         5 . A processing circuit mounted in the terminal apparatus, wherein
 the processing circuit makes the terminal apparatus perform the method according to  claim 3 .   
     
     
         6 . A processing circuit mounted in the base station apparatus, wherein
 the processing circuit makes the base station apparatus perform the method according to  claim 4 .