TERMINAL DEVICE, BASE STATION DEVICE, AND TRANSMISSION/RECEPTION METHOD

摘要

In the present disclosure, even if different UL-DL configurations are set for a plurality of unit bands, notification timing of error detection results for SCell is not dispersed complicatedly, and the processing relating to the error detection results can be simplified. At the reference notification timing of a response signal with respect to downlink data of a second unit band, if a sub-frame of the second unit band is an uplink communication sub-frame and a sub-frame of a first unit band is a downlink communication sub-frame, a control unit (208) transmits the response signal with respect to the downlink data in a specific uplink communication sub-frame (for example, #2 or #7) set in the first unit band.

主权项

1. A communication apparatus comprising:
a transmitter which, in operation, transmits downlink data on a first component carrier and a second component carrier, wherein the first component carrier and the second component carrier have different frame configuration patterns among a plurality of frame configuration patterns, each frame configuration pattern defining transmission timings of one or more uplink subframes and one or more downlink subframes within a frame; a receiver which, in operation, receives a response signal indicating error detection results of the downlink data for the first component carrier and the second component carrier, the response signal received in specified uplink subframe(s) within the frame only on the first component carrier, wherein subframe(s) other than the specified uplink subframe(s) within the frame are not used for receiving the response signal, the specified uplink subframe(s) having a transmission timing that is defined according to the same periodicity as a periodicity of a switching point from downlink transmission to uplink transmission (DL/UL switching point), the plurality of frame configuration patterns including at least two frame configuration patterns whose periodicity of the DL/UL switching point is different from each other; and a controller which, in operation, determines whether or not to retransmit the downlink data based on the received response signal.