RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, RADIO COMMUNICATION METHOD AND INTEGRATED CIRCUIT

摘要

A wireless communication system according to an aspect of the present invention is a wireless communication system in which a first base station apparatus and a second base station apparatus communicate with a terminal apparatus, in which the first base station apparatus and/or the second base station apparatus notify the terminal apparatus of data control information related to data transmission and reception of the terminal apparatus and timer information used for notification of a buffer status report, and the terminal apparatus notifies any one of the first base station apparatus and the second base station apparatus of the buffer status report of uplink data based on the data control information in a case where the notification of the buffer status report is triggered.