Terminal device, base station device, communication method, and integrated circuit

A terminal device which communicates with a base station device using serving cells including a primary cell and a secondary cell, the terminal device comprising:

• receiving circuitry configured to:
• receive first information used for configuring to perform any one of a first behavior and a second behavior,
• receive second information used for indicating that a simultaneous transmission of hybrid automatic repeat request-acknowledgment (HARQ-ACK) and channel state information (CSI) using a first physical uplink control channel (PUCCH) format is performed, and
• receive third information used for indicating that a simultaneous transmission of HARQ-ACK and CSI using a second PUCCH format is performed;
• and
• transmitting circuitry configured to:
• transmit HARQ-ACK and CSI using the first PUCCH format,
• transmit HARQ-ACK and CSI using the second PUCCH format, and
• drop CSI and transmit only HARQ-ACK, wherein
• the first behavior is a behavior which uses any one of the first PUCCH format and the second PUCCH format,
• the second behavior is a behavior which always uses the second PUCCH format, and
• the transmitting circuitry is configured to determine whether
• HARQ-ACK and CSI are transmitted using the first PUCCH format,
• HARQ-ACK and CSI are transmitted using the second PUCCH format, or
• CSI is dropped and only HARQ-ACK is transmitted,
• based on, at least, the first information, the second information, the third information, and whether or not HARQ-ACK corresponds to a physical downlink shared channel (PDSCH) transmission on the secondary cell.

A base station device which communicates with a terminal device using serving cells including a primary cell and a secondary cell, the base station device comprising:

• transmitting circuitry configured to:
• transmit first information used for configuring to perform any one of a first behavior and a second behavior,
• transmit second information used for indicating that a simultaneous transmission of hybrid automatic repeat request-acknowledgment (HARQ-ACK) and channel state information (CSI) using a first physical uplink control channel (PUCCH) format is performed, and
• transmit third information used for indicating that a simultaneous transmission of HARQ-ACK and CSI using a second PUCCH format is performed;
• and
• receiving circuitry configured to:
• receive HARQ-ACK and CSI using the first PUCCH format,
• receive HARQ-ACK and CSI using the second PUCCH format, and
• assume CSI is dropped and receive only HARQ-ACK, wherein
• the first behavior is a behavior which uses any one of the first PUCCH format and the second PUCCH format,
• the second behavior is a behavior which always uses the second PUCCH format, and
• the receiving circuitry is configured to determine whether
• HARQ-ACK and CSI are received using the first PUCCH format,
• HARQ-ACK and CSI are received using the second PUCCH format, or
• CSI is dropped and only HARQ-ACK is received,
• based on, at least, the first information, the second information, the third information, and whether or not HARQ-ACK corresponds to a physical downlink shared channel (PDSCH) transmission on the secondary cell.

A communication method of a terminal device which communicates with a base station device using serving cells including a primary cell and a secondary cell, the communication method comprising:

• receiving first information used for configuring to perform any one of a first behavior and a second behavior,
• receiving second information used for indicating that a simultaneous transmission of hybrid automatic repeat request-acknowledgment (HARQ-ACK) and channel state information (CSI) using a first physical uplink control channel (PUCCH) format is performed, and
• receiving third information used for indicating that a simultaneous transmission of HARQ-ACK and CSI using a second PUCCH format is performed;
• and
• transmitting HARQ-ACK and CSI using the first PUCCH format,
• transmitting HARQ-ACK and CSI using the second PUCCH format, and
• dropping CSI and transmitting only HARQ-ACK, wherein
• the first behavior is a behavior which uses any one of the first PUCCH format and the second PUCCH format,
• the second behavior is a behavior which always uses the second PUCCH format, and
• determining whether
• HARQ-ACK and CSI are transmitted using the first PUCCH format,
• HARQ-ACK and CSI are transmitted using the second PUCCH format, or
• CSI is dropped and only HARQ-ACK is transmitted,
• based on, at least, the first information, the second information, the third information, and whether or not HARQ-ACK corresponds to a physical downlink shared channel (PDSCH) transmission on the secondary cell.

A communication method of a base station device which communicates with a terminal device using serving cells including a primary cell and a secondary cell, the communication method comprising:

• transmitting first information used for configuring to perform any one of a first behavior and a second behavior,
• transmitting second information used for indicating that a simultaneous transmission of hybrid automatic repeat request-acknowledgment (HARQ-ACK) and channel state information (CSI) using a first physical uplink control channel (PUCCH) format is performed, and
• transmitting third information used for indicating that a simultaneous transmission of HARQ-ACK and CSI using a second PUCCH format is performed;
• and
• receiving HARQ-ACK and CSI using the first PUCCH format,
• receiving HARQ-ACK and CSI using the second PUCCH format, and
• assuming CSI is dropped and receiving only HARQ-ACK, wherein
• the first behavior is a behavior which uses any one of the first PUCCH format and the second PUCCH format,
• the second behavior is a behavior which always uses the second PUCCH format, and
• determining whether
• HARQ-ACK and CSI are received using the first PUCCH format,
• HARQ-ACK and CSI are received using the second PUCCH format, or
• CSI is dropped and only HARQ-ACK is received,
• based on, at least, the first information, the second information, the third information, and whether or not HARQ-ACK corresponds to a physical downlink shared channel (PDSCH) transmission on the secondary cell.