US Patent No. 10,397,921

TERMINAL, BASE STATION, AND COMMUNICATION METHOD


Patent No. 10,397,921
Issue Date August 27, 2019
Title Terminal, Base Station, And Communication Method
Inventorship Naoki Kusashima, Sakai (JP)
Kazuyuki Shimezawa, Sakai (JP)
Wataru Ouchi, Sakai (JP)
Alvaro Ruiz Delgado, Sakai (JP)
Kimihiko Imamura, Sakai (JP)
Takashi Hayashi, Sakai (JP)
Assignee SHARP KABUSHIKI KAISHA, Sakai (JP)

Claim of US Patent No. 10,397,921

1. A user equipment comprising:receiving circuitry that receives a physical downlink shared channel (PDSCH);
setting circuitry that sets an uplink (UL)/downlink (DL) configuration number for at least one of more than one serving cell;
transmitting circuitry that transmits a hybrid automatic repeat request—acknowledgement (HARQ-ACK) in a subframe, wherein
the transmitting circuitry transmits the HARQ-ACK using a physical uplink control channel (PUCCH) format or a physical uplink shared channel (PUSCH), and
in a case that (a) the more than one serving cell includes a primary cell with a frame structure type 2 and a secondary cell with a frame structure type 1, (b) the setting circuitry sets 0, 1, 2, 3, 4, or 6 as a DL-reference UL/DL configuration number for the primary cell, (c) the setting circuitry sets 0, 1, 2, 3, 4, or 6 as a DL-reference UL/DL configuration number for the secondary cell, and (d) the setting circuitry sets a PUCCH format 1b with channel selection as the PUCCH for the primary cell and the secondary cell:
the transmitting circuitry transmits the HARQ-ACK by assuming that an UL-reference UL/DL configuration number for the secondary cell belongs to 1, 2, 3, 4, or 6.