User terminal and wireless communication method
AssigneeNtt Docomo, Inc.
InventorsYuki Matsumura, Kazuki Takeda, Satoshi Nagata
Life of this patent
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Abstract
A user terminal (20) is provided with: an error detection unit (205) that detects the presence/absence of an error concerning a downlink data signal and generates ACK or NACK which are error detection results; and a mapping unit (207) that maps a transmission signal on a first frequency resource in one symbol and corresponding to ACK when the error detection result is ACK, and maps a transmission signal on a second frequency resource different from the first frequency resource in the same symbol corresponding to NACK when the error detection result is NACK.
Claims6
A user terminal, comprising:
- an error detector that detects presence or absence of an error with respect to a downlink data signal, and generates an ACK or NACK which is an error detection result;
- and
- a mapper that maps, when the error detection result is ACK, a transmission signal to a first frequency resource in one symbol associated with the ACK, and that maps, when the error detection result is NACK, the transmission signal to a second frequency resource which is different from the first frequency resource in a same symbol and which is associated with the NACK.
A radio communication method, comprising:
- detecting presence or absence of an error with respect to a downlink data signal, and generating ACK or NACK as an error detection result;
- and
- mapping, when the error detection result is ACK, a transmission signal to a first frequency resource in one symbol associated with the ACK, and mapping, when the error detection result is NACK, the transmission signal to a second frequency resource which is different from the first frequency resource in a same symbol and which is associated with the NACK.
Dependencies are inferred from the claim text.