Terminal device, base station device, and communication method

A base station apparatus, comprising:

• a transmission unit configured to:
• when a carrier is set in an unlicensed band, transmit a first Physical Downlink Control Channel (PDCCH) in a first type 0 PDCCH common search space set and transmit a first Physical Downlink Shared Channel (PDSCH) scheduled by the first PDCCH and
• when the carrier is not set in the unlicensed band, transmit a second PDCCH in a second type 0 PDCCH common search space set and transmit a second PDSCH scheduled by the second PDCCH;
• and
• a higher layer processing unit configured to manage common Radio Resource Control (RRC) signaling included in the first PDSCH or the second PDSCH, wherein:
• a time domain resource configuration of the first PDSCH is a first configuration, and.
• a time domain resource configuration of the second PDSCH is a second configuration different from the first configuration.

A communication method for a terminal apparatus, comprising:

• when a carrier is set in an unlicensed band, detecting a first Physical Downlink Control Channel (PDCCH) in a first type 0 PDCCH common search space set and receiving a first Physical Downlink Shared Channel (PDSCH) scheduled by the first PDCCH, and
• when the carrier is not set in the unlicensed band, detecting a second PDCCH in a second type 0 PDCCH common search space set and receiving a second PDSCH scheduled by the second PDCCH;
• and
• managing common Radio Resource Control (RRC) signaling included in the first PDSCH or the second PDSCH, wherein:
• a time domain resource configuration of the first PDSCH is a first configuration, and
• a time domain resource configuration of the second PDSCH is a second configuration different from the first configuration.

A communication method for a base station apparatus, comprising:

• when a carrier is set in an unlicensed band, transmitting a first Physical Downlink Control Channel (PDCCH) in a first type 0 PDCCH common search space set and transmitting a first Physical :Downlink Shared Channel (PDSCH) scheduled by the first PDCCH, and
• when the carrier is not set in the unlicensed band, transmitting a second PDCCH in a second type 0 PDCCH common search space set and transmitting a second PDSCH scheduled by the second PDCCH;
• and
• managing common :Radio Resource Control (RRC) signaling included in the first PDSCH or the second PDSCH, wherein:
• a time domain resource configuration of the first PDSCH is a first configuration, and
• a time domain resource configuration of the second PDSCH is a second configuration different from the first configuration.