Terminal apparatus and response signal mapping method
First Claim
1. A terminal apparatus that communicates with a base station, using some or all of a plurality of configured downlink component carriers, the apparatus comprising:
- a receiving section that receives downlink allocation control information portions transmitted through downlink control channels of the plurality of downlink component carriers and downlink data transmitted through a downlink data channel indicated by the downlink allocation control information portions;
a generating section that generates a response signal based on success or failure in receiving the downlink data, the response signal including a first response signal corresponding to a first downlink component carrier among the plurality of downlink component carriers and a second response signal corresponding to a second downlink component carrier among the plurality of downlink component carriers;
a coding section that separately encodes the first response signal and the second response signal; and
a mapping section that maps the first response signal and the second response signal to different regions in an uplink data channel region, respectively, while the first response signal and the second response signal are time-multiplexed with an uplink data, whereinin the generating section, a number of symbols of the first response signal and a number of symbols of the second response signal are determined independently of each other.
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Abstract
This invention relates to a terminal apparatus that can possibly reduce situations in which upstream channel data are punctured by a plurality of response signals. When having received at least one piece of downstream allocation control information corresponding to a second downstream unit band, which is other than a first downstream unit band, of a plurality of unit bands, a control unit (208) maps a plurality of response signals, which are corresponding to the respective ones of the plurality of downstream unit bands established, to a first resource corresponding to the plurality of downstream unit bands established. When having received only the downstream allocation control information corresponding to the first downstream unit band of the plurality of unit bands established, the control unit (208) maps the response signal, which is corresponding to the first downstream unit band, to a second resource corresponding to the first downstream unit band.
26 Citations
12 Claims
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1. A terminal apparatus that communicates with a base station, using some or all of a plurality of configured downlink component carriers, the apparatus comprising:
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a receiving section that receives downlink allocation control information portions transmitted through downlink control channels of the plurality of downlink component carriers and downlink data transmitted through a downlink data channel indicated by the downlink allocation control information portions; a generating section that generates a response signal based on success or failure in receiving the downlink data, the response signal including a first response signal corresponding to a first downlink component carrier among the plurality of downlink component carriers and a second response signal corresponding to a second downlink component carrier among the plurality of downlink component carriers; a coding section that separately encodes the first response signal and the second response signal; and a mapping section that maps the first response signal and the second response signal to different regions in an uplink data channel region, respectively, while the first response signal and the second response signal are time-multiplexed with an uplink data, wherein in the generating section, a number of symbols of the first response signal and a number of symbols of the second response signal are determined independently of each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A response signal mapping method in a terminal apparatus that communicates with a base station, using some or all of a plurality of configured downlink component carriers, the method comprising:
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receiving downlink allocation control information portions transmitted through downlink control channels of the plurality of downlink component carriers; receiving downlink data transmitted through a downlink data channel indicated by the downlink allocation control information portions; generating a response signal based on success or failure in receiving the downlink data, the response signal including a first response signal corresponding to a first downlink component carrier among the plurality of downlink component carriers and a second response signal corresponding to a second downlink component carrier among the plurality of downlink component carriers, a number of symbols of the first response signal and a number of symbols of the second response signal are determined independently of each other; separately encoding the first response signal and the second response signal; and mapping the first response signal and the second response signal to different regions in an uplink data channel region, respectively, while the first response signal and the second response signal are time-multiplexed with an uplink data. - View Dependent Claims (10, 11, 12)
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Specification