Apparatus and method related to dual connectivity

Abstract

An apparatus and a method which make it possible to suppress occurrence of an unnecessary operation in a case of an SCG bearer. The apparatus includes: a communication processing unit configured to communicate with a terminal apparatus over a Master Cell Group (MCG) bearer for dual connectivity of the terminal apparatus; a request unit configured to request a secondary base station, which communicates with the terminal apparatus over a Secondary Cell Group (SCG) bearer for the dual connectivity, to report activity-related information related to an activity of the terminal apparatus in an SCG of the secondary base station; and an information acquisition unit configured to acquire the activity-related information reported by the secondary base station.

What is claimed is: 
     
         1 . A second communication apparatus comprising:
 a receiver configured to receive, from a first communication apparatus, information related to time interval for observation of activity of a terminal apparatus if the second communication apparatus is requested to send, from the first communication apparatus, activity-related information related to the terminal apparatus on the second communication apparatus, and   a processor configured to observe activity of the terminal apparatus, and   wherein the processor is configured to stop observing the activity of the terminal apparatus if a value of the information is 0.   
     
     
         2 . A method of a second communication apparatus comprising:
 receiving, from a first communication apparatus, information related to inactivity timer of a terminal apparatus if the second communication apparatus is requested to send activity-related information related to the terminal apparatus on the second communication apparatus, and   observing activity of the terminal apparatus, and   stopping observing the activity of the terminal apparatus if a value of the inactivity timer is 0.   
     
     
         3 . A first communication apparatus comprising:
 a transmitter configured to transmit, to a second communication apparatus, information related to inactivity timer of a terminal apparatus if the first communication apparatus requests, to the second communication apparatus, to send activity-related information related to the terminal apparatus on the second communication apparatus, and   a receiver configured to receive the information from the second communication apparatus, and   wherein the activity of the terminal apparatus is not observed if a value of the inactivity timer is 0.