BASE STATION DEVICE, TERMINAL DEVICE AND COMMUNICATION METHOD

摘要

In a terminal, a control unit transmits a bundle response signal using a resource in a basic region of an uplink control channel in an uplink unit band of a unit band group when no error is detected in each of a plurality of pieces of downlink data of the unit band group, the uplink control channel in the uplink unit band being associated with a downlink control channel in a basic unit band that is a downlink unit band in which a broadcast channel signal including information relating to the uplink unit band is transmitted, and the control unit transmits the bundle response signal using a resource in an additional region of the uplink control channel when an error is detected in each of the plurality of pieces of downlink data.

主权项

1. A terminal, comprising:
circuitry, which, in operation,
detects control information on a control channel element (CCE), the control information including downlink assignment information that indicates respective downlink data resources assigned to one or more downlink component carrier(s) of a plurality of configured downlink component carriers, the plurality of configured downlink component carriers including at least a first downlink component carrier and a second downlink component carrier; anddecodes downlink data in the respective resources; and a transmitter, which, in operation, transmits respective response signals to the downlink data, wherein:
when control information on the first downlink component carrier is detected and control information on the second downlink component carrier is not detected by the circuitry, a response signal is transmitted using a first uplink control channel resource, an index of which is associated with a number of the CCE; andwhen control information on the second downlink component carrier is detected and control information on the first downlink component carrier is not detected by the circuitry, a response signal is transmitted using a second uplink control channel resource, an index of which is signaled to the terminal.