US Patent No. 10,694,505

INTEGRATED CIRCUIT


Patent No. 10,694,505
Issue Date June 23, 2020
Title Integrated Circuit
Inventorship Akihiko Nishio, Osaka (JP)
Toru Oizumi, Kanagawa (JP)
Ayako Horiuchi, Kanagawa (JP)
Assignee Sun Patent Trust, New York, NY (US)

Claim of US Patent No. 10,694,505

1. An integrated circuit comprising:control circuitry, which, in operation, forms a control channel for transmitting control information for one or more of a plurality of component carriers, using a selected one of a plurality of PUCCH (Physical Uplink Control Channel) formats including a first PUCCH format and a second PUCCH format, the plurality of component carriers including a Primary Component Carrier (PCC) and a Secondary Component Carrier (SCC); and
transmission circuitry, which is coupled to the control circuitry and which, in operation, controls transmission of the formed control channel, wherein
responsive to determining that the control information includes only Channel State Information (CSI) for the plurality of component carriers out of ACK/NACK and the CSI, the first PUCCH format is selected and used to form the control channel;
responsive to determining that the control information includes the ACK/NACK and the CSI for the plurality of component carriers, the first PUCCH format is selected and used to form the control channel;
responsive to determining that the control information includes only the ACK/NACK out of the ACK/NACK and the CSI, the second PUCCH format, different from the first PUCCH format, is selected and used to form the control channel;
responsive to determining that the control information includes the ACK/NACK for the SCC and the CSI, and that there is no downlink data assignment for the SCC, the control channel is formed using a resource configured beforehand; and
responsive to determining that the control information includes the ACK/NACK for the SCC and the CSI, and that there is downlink data assignment for the SCC, the control channel is formed using a resource indicated from a base station.