TERMINAL, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

摘要

A terminal for communicating with a base station, wherein when a physical downlink control channel or an expanded physical downlink control channel related to a physical downlink common channel of a first cell, and an expanded physical downlink control channel related to a physical downlink common channel of a second cell are detected, one physical uplink control channel resource is selected from among a physical uplink control channel resource that is set for the physical downlink common channel of the first cell and a physical uplink control channel resource that is set for the physical downlink common channel of the second cell.