Terminal apparatus, base station apparatus, and communication method
A terminal apparatus receives a transport block in a primary cell, selects a first transmission method in a case that a scheduling request is a negative scheduling request, HARQ-ACK is transmitted in a subframe n, and a subframe q in a secondary cell does not correspond to any of first prescribed subframes, selects a second transmission method in a case that the subframe q corresponds to one of the first prescribed subframes, and transmits the HARQ-ACK in a PUCCH resource for the HARQ-ACK, wherein the subframe q is given by n−4 in a case that a first higher layer parameter for the secondary cell is not configured, and the subframe q is given by n−3 in a case that the first higher layer parameter for the secondary cell is configured for the terminal apparatus 1.
1. A terminal apparatus for communicating with a base station apparatus by using at least two serving cells including one primary cell of FDD and one secondary cell of TDD, the terminal apparatus comprising:
a receiver configured to receive a transport block; and
a transmitter configured to
select a first transmission method in a case that a scheduling request is a negative scheduling request, HARQ-ACK for the transport block is transmitted in a subframe n, and a subframe q in the secondary cell does not correspond to any of first prescribed subframes,
select a second transmission method in a case that the scheduling request is a negative scheduling request, the HARQ-ACK for the transport block is transmitted in the subframe n, and the subframe q in the secondary cell corresponds to one of the first prescribed subframes, and
transmit the HARQ-ACK in a PUCCH resource for the HARQ-ACK by using a transmission method selected, wherein
the first transmission method is a method for transmitting HARQ-ACK with PUCCH format 1b with channel selection for FDD,
the second transmission method is a method for transmitting HARQ-ACK with PUCCH format 1a or 1b for FDD,
the subframe q is a subframe n−4 in a case that a higher layer parameter shortProcessingTime for the secondary cell is not configured, and
the subframe q is a subframe n−3 in a case that the higher layer parameter shortProcessingTime for the secondary cell is configured.
2. The terminal apparatus according to claim 1 , wherein
the first prescribed subframes includes an uplink subframe and a special subframe of any of multiple prescribed configurations within a radio frame.
3. A base station apparatus for communicating with a terminal apparatus by using at least two serving cells including one primary cell of FDD and one secondary cell of TDD, the base station apparatus comprising:
a transmitter configured to transmit a transport block; and
a receiver configured to
select a first transmission method in a case that a scheduling request is a negative scheduling request, HARQ-ACK for the transport block is transmitted in a subframe n, and a subframe q in the secondary cell does not correspond to any of first prescribed subframes,
select a second transmission method in a case that the scheduling request is a negative scheduling request, the HARQ-ACK for the transport block is transmitted in the subframe n, and the subframe q in the secondary cell corresponds to one of the first prescribed subframes, and
receive the HARQ-ACK in a PUCCH resource for the HARQ-ACK, based on a transmission method selected, wherein
the first transmission method is a method for transmitting HARQ-ACK with PUCCH format 1b with channel selection for FDD,
the second transmission method is a method for transmitting HARQ-ACK with PUCCH format 1a or 1b for FDD,
the subframe q is a subframe n−4 in a case that a higher layer parameter shortProcessingTime for the secondary cell is not configured, and
the subframe q is a subframe n−3 in a case that the higher layer parameter shortProcessingTime for the secondary cell is configured.
4. The base station apparatus according to claim 3 , wherein
the first prescribed subframes includes an uplink subframe and a special subframe of any of multiple prescribed configurations within a radio frame.
5. A communication method for a terminal apparatus for communicating with a base station apparatus by using at least two serving cells including one primary cell of FDD and one secondary cell of TDD, the communication method comprising the steps of:
receiving a transport block;
selecting a first transmission method in a case that a scheduling request is a negative scheduling request, HARQ-ACK for the transport block is transmitted in a subframe n, and a subframe q in the secondary cell does not correspond to any of first prescribed subframes;
selecting a second transmission method in a case that the scheduling request is a negative scheduling request, the HARQ-ACK for the transport block is transmitted in the subframe n, and the subframe q in the secondary cell corresponds to one of the first prescribed subframes; and
transmitting the HARQ-ACK in a PUCCH resource for the HARQ-ACK by using a transmission method selected, wherein
the first transmission method is a method for transmitting HARQ-ACK with PUCCH format 1b with channel selection for FDD,
the second transmission method is a method for transmitting HARQ-ACK with PUCCH format 1a or 1b for FDD,
the subframe q is a subframe n−4 in a case that a higher layer parameter shortProcessingTime for the secondary cell is not configured, and
the subframe q is a subframe n−3 in a case that the higher layer parameter shortProcessingTime for the secondary cell is configured.
6. A communication method for a base station apparatus for communicating with a terminal apparatus by using at least two serving cells including one primary cell of FDD and one secondary cell of TDD, the communication method comprising the steps of:
transmitting a transport block;
selecting a first transmission method in a case that a scheduling request is a negative scheduling request, HARQ-ACK for the transport block is transmitted in a subframe n, and a subframe q in the secondary cell does not correspond to any of first prescribed subframes;
selecting a second transmission method in a case that the scheduling request is a negative scheduling request, the HARQ-ACK for the transport block is transmitted in the subframe n, and the subframe q in the secondary cell corresponds to one of the first prescribed subframes; and
receiving the HARQ-ACK in a PUCCH resource for the HARQ-ACK, based on a transmission method selected, wherein
the first transmission method is a method for transmitting HARQ-ACK with PUCCH format 1b with channel selection for FDD,
the second transmission method is a method for transmitting HARQ-ACK with PUCCH format 1a or 1b for FDD,
the subframe q is a subframe n−4 in a case that a higher layer parameter shortProcessingTime for the secondary cell is not configured, and
the subframe q is a subframe n−3 in a case that the higher layer parameter shortProcessingTime for the secondary cell is configured.