TERMINAL DEVICE, BASE STATION DEVICE, AND METHOD

摘要

Provided are a terminal device, a base station device, and a method that make it possible to communicate efficiently in a communication system in which a base station device and a terminal device communicate. The terminal device communicates with the base station and is provided with an upper layer processing unit that expands a Ci field based on a medium access control layer control element (MAC CE) when a secondary cell list is expanded via radio resource control (RRC) signaling.