Terminal device, base station apparatus, communication method, and integrated circuit
A terminal device includes a transmission unit that transmits HARQ response information to a first serving cell and a second serving cell on a physical uplink shared channel in a subframe. The physical uplink shared channel is transmitted based on a physical downlink control channel or an enhanced physical downlink control channel which is detected in a state of including a downlink control information format 0/4. Two or more serving cells are configured in the terminal device, in a case where frame constitution types of any two configured serving cells are different from each other, and in a case where a primary cell has Frame constitution type 2, B c DL is applied to the first serving cell of Frame constitution type 2 by using a first following expression, and is applied to the second serving cell of Frame constitution type 1 by using a second expression.
1. A user equipment comprising:
transmission circuitry configured to transmit hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits in a subframe n,
reception circuitry configured to detect downlink control information format (DCI) 0 or 4 corresponding to a physical uplink shared channel on a serving cell, and
control circuitry configured to
determine the number of the HARQ-ACK bits based on a parameter W DAI UL ,
determine a value of the W DAI UL from a downlink assignment index (DAI) in a subframe n−4 for the serving cell in a case that the user equipment is configured with more than one serving cell, frame structure types of two configured serving cells are different, a primary cell is frame structure type 2, and the serving cell is frame structure type 1, and
determine a value of the W DAI UL from the DAI in a subframe n−k for the serving cell with the frame structure type 2, wherein
the DAI is in the DCI format 0 or 4,
the frame structure type 1 is applicable to frequency division duplex (FDD),
the frame structure type 2 is applicable to time division duplex (TDD)
the n is an integer, and
the k is an integer defined by TDD uplink-downlink configuration and the subframe n.
2. The user equipment according to claim 1 , wherein
the serving cell is a secondary cell using FFD.
3. The user equipment according to claim 1 , wherein
the serving cell is a primary cell or a secondary cell which uses TDD.
4. A base station apparatus which communicates with a user equipment, the base station apparatus comprising:
reception circuitry configured to receive hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits in a subframe n,
transmission circuitry configured to transmit downlink control information format (DCI) 0 or 4 corresponding to a physical uplink shared channel on a serving cell, and
control circuitry configured to
determine the number of the HARQ-ACK bits based on a parameter W DAI UL ,
determine a value of the W DAI UL from a downlink assignment index (DAI) in a subframe n−4 for the serving cell in a case that the user equipment is configured with more than one serving cell, frame structure types of two configured serving cells are different, a primary cell is frame structure type 2, and the serving cell is frame structure type 1, and
determine a value of the W DAI UL from the DAI in a subframe n−k for the serving cell with the frame structure type 2, wherein
the DAI is in the DCI format 0 or 4,
the frame structure type 1 is applicable to frequency division duplex (FDD),
the frame structure type 2 is applicable to time division duplex (TDD)
the n is an integer, and
the k is an integer defined by TDD uplink-downlink configuration and the subframe n.
5. The base station apparatus according to claim 4 , wherein
the serving cell is a secondary cell using FFD.
6. The base station apparatus according to claim 1 , wherein
the serving cell is a primary cell or a secondary cell which uses TDD.
7. A communication method of a user equipment, the communication method comprising:
transmitting hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits in a subframe n,
detecting downlink control information format (DCI) 0 or 4 corresponding to a physical uplink shared channel on a serving cell, and
determining the number of HARQ-ACK bits, based on a parameter W DAI UL ,
determine a value of the W DAI UL from a downlink assignment index (DAI) in a subframe n−4 for the serving cell in a case that the user equipment is configured with more than one serving cell, frame structure types of two configured serving cells are different, a primary cell is frame structure type 2, and the serving cell is frame structure type 1, and
determine a value of the W DAI UL from the DAI in a subframe n−k for the serving cell with the frame structure type 2, wherein
the DAI is in the DCI format 0 or 4,
the frame structure type 1 is applicable to frequency division duplex (FDD),
the frame structure type 2 is applicable to time division duplex (TDD),
the n is an integer, and
the k is an integer defined by TDD uplink-downlink configuration and the subframe n.
8. A communication method of a base station apparatus which communicates with a user equipment, the communication method comprising:
receiving hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits in a subframe n,
transmitting downlink control information format (DCI) 0 or 4 corresponding to a physical uplink shared channel on a serving cell, and
determining the number of HARQ-ACK bits, based on a parameter W DAI UL ,
determine a value of the W DAI UL is determined from a downlink assignment index (DAI) in a subframe n−4 for the serving cell in a case that the user equipment is configured with more than one serving cell, frame structure types of two configured serving cells are different, a primary cell is frame structure type 2, and the serving cell is frame structure type 1, and
determine a value of the W DAI UL from the DAI in a subframe n−k for the serving cell with the frame structure type 2, wherein
the DAI is in the DCI format 0 or 4,
the frame structure type 1 is applicable to frequency division duplex (FDD),
the frame structure type 2 is applicable to time division duplex (TDD),
the n is an integer, and
the k is an integer defined by TDD uplink-downlink configuration and the subframe n.