US Patent 10064171 User equipment, base station apparatus, integrated circuit, and communication method

A user equipment includes a reception unit that receives first information indicating a radio network temporary identifier (RNTI), second information, plural pieces of third information, and fourth information. The second information indicates a subframe in which the user equipment monitors a physical downlink control channel with the RNTI. Each of the plural pieces of third information indicates an uplink-downlink configuration which is transmitted on the physical downlink control channel with the RNTI. The fourth information is used for determining an index of third information for a serving cell among the plural pieces of third information. In a case where the fourth information is configured for any of activated serving cells, the reception unit monitors the physical downlink control channel with the RNTI, in a common search space for a primary cell, in the subframe for monitoring the physical downlink control channel with the RNTI.