Abstract
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.
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Specification Information
Specification Information
Technologies
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A terminal configured with one or more downlink component carrier(s), the terminal comprising:
a control information detecting section which, in operation, detects control information transmitted from a base station on a control channel element (CCE), the control information including downlink assignment information that indicates a resource for downlink data, the resource being assigned to each of the downlink component carrier(s);
a decoding section which, in operation, decodes the downlink data, which is transmitted in the resource indicated by the downlink assignment information included in the detected control information; and
a transmitting section which, in operation, transmits a response signal for the decoded downlink data,
wherein:
downlink component carriers including a first downlink component carrier and a second downlink component carrier are configured;
when control information on the first downlink component carrier is detected and control information on the second downlink component carrier is not detected, the response signal is transmitted using a first uplink control channel resource, an index of which is associated with a number of the CCE; and
when control information on the second downlink component carrier is detected and control information on the first downlink component carrier is not detected, the response signal is transmitted using a second uplink control channel resource, an index of which is notified from the base station, and
wherein at least one of the control information detecting section, the decoding section and the transmitting section includes circuitry.
2. The terminal according to claim 1, wherein the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted.
3. The terminal according to claim 1, wherein: the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; and when the response signal denotes the DTX for downlink data on the second downlink component carrier, the response signal is transmitted using the first uplink control channel resource.
4. The terminal according to claim 1, wherein: the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; and when the response signal denotes the DTX for downlink data on the first downlink component carrier, the response signal is transmitted using the second uplink control channel resource.
5. The terminal according to claim 1, wherein: the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; and when the response signal denotes the outcome for downlink data on the first downlink component carrier and denotes an unsuccessful decoding or the DTX for downlink data on the second downlink component carrier, the response signal is transmitted using the first uplink control channel resource.
6. The terminal according to claim 1, wherein: the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; and when the response signal denotes the outcome for downlink data on the second downlink component carrier and denotes the DTX for downlink data on the first downlink component carrier, the response signal is transmitted using the second uplink control channel resource.
7. The terminal according to claim 1, wherein: the response signal denotes an outcome of the decoding of the downlink data on each of the downlink component carrier(s), or denotes a Discontinuous Transmission (DTX) representing that the outcome is not transmitted; and when the response signal denotes a successful decoding for downlink data on the second downlink component carrier and denotes an unsuccessful decoding or the DTX for downlink data on the first downlink component carrier, the response signal is transmitted using the second uplink control channel resource.
8. The terminal according to claim 1, wherein the first downlink component carrier is a primary component carrier.
9. The terminal according to claim 1, wherein the response signal is transmitted on a single uplink component carrier.
10. The terminal according to claim 1, wherein the outcome of the decoding is denoted by an Acknowledgment (ACK) or a Negative Acknowledgment (NACK).
11. The terminal according to claim 1, wherein the response signal denotes a Discontinuous Transmission (DTX) that represents that downlink assignment information corresponding to the downlink data is not detected.
12. The terminal according to claim 1, wherein the first uplink control channel resource is implicitly notified from the base station, and the second uplink control channel resource is explicitly notified from the base station.
13. A terminal configured with one or more downlink component carrier(s), the terminal comprising:
a control information detecting section which, in operation, detects control information transmitted from a base station on a control channel element (CCE), the control information including downlink assignment information that indicates a resource for downlink data, the resource being assigned to each of the downlink component carrier(s);
a decoding section which, in operation, decodes the downlink data, which is transmitted in the resource indicated by the downlink assignment information included in the detected control information; and
a transmitting section which, in operation, transmits a response signal for the decoded downlink data,
wherein:
downlink component carriers including a first downlink component carrier and a second downlink component carrier are configured;
when control information corresponding to downlink data on the first downlink component carrier is detected and control information corresponding to downlink data on the second downlink component carrier is not detected, the response signal is transmitted using a first uplink control channel resource, an index of which is associated with a number of the CCE; and
when control information corresponding to downlink data on the second downlink component carrier is detected and control information corresponding to downlink data on the first downlink component carrier is not detected, the response signal is transmitted using a second uplink control channel resource, an index of which is notified from the base station, and
wherein at least one of the control information detecting section, the decoding section and the transmitting section includes circuitry.
14. A method for transmitting a response signal from a terminal configured with one or more downlink component carrier(s), the method comprising:
detecting control information transmitted from a base station on a control channel element (CCE), the control information including downlink assignment information that indicates a resource for downlink data, the resource being assigned to each of the downlink component carrier(s);
decoding the downlink data, which is transmitted in the resource indicated by the downlink assignment information included in the detected control information; and
transmitting a response signal for the decoded downlink data,
wherein:
downlink component carriers including a first downlink component carrier and a second downlink component carrier are configured;
when control information on the first downlink component carrier is detected and control information on the second downlink component carrier is not detected, the response signal is transmitted using a first uplink control channel resource, an index of which is associated with a number of the CCE; and
when control information on the second downlink component carrier is detected and control information on the first downlink component carrier is not detected, the response signal is transmitted using a second uplink control channel resource, an index of which is notified from the base station.
15. A method for transmitting a response signal from a terminal configured with one or more downlink component carrier(s), the method comprising:
detecting control information transmitted from a base station on a control channel element (CCE), the control information including downlink assignment information that indicates a resource for downlink data, the resource being assigned to each of the downlink component carrier(s);
decoding the downlink data, which is transmitted in the resource indicated by the downlink assignment information included in the detected control information; and
transmitting a response signal for the decoded downlink data,
wherein:
downlink component carriers including a first downlink component carrier and a second downlink component carrier are configured;
when control information corresponding to downlink data on the first downlink component carrier is detected and control information corresponding to downlink data on the second downlink component carrier is not detected, the response signal is transmitted using a first uplink control channel resource, an index of which is associated with a number of the CCE; and
when control information corresponding to downlink data on the second downlink component carrier is detected and control information corresponding to downlink data on the first downlink component carrier is not detected, the response signal is transmitted using a second uplink control channel resource, an index of which is notified from the base station.
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