User terminal, radio base station, and radio communication method
AssigneeNtt Docomo, Inc.
InventorsKazuaki Takeda, Kazuki Takeda, Satoshi Nagata, Qin Mu
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Abstract
Disclosed is to properly perform retransmission control of a downlink signal (e.g., a downlink shared channel) in a future radio communication system. The present invention provides a user terminal comprising a reception section that receives downlink control information and a control section that determines, based on the downlink control information, a single subcarrier that is used for transmission of retransmission control information of a downlink shared channel.
Claims13
A user terminal transmitting retransmission control information of a downlink shared channel, the user terminal comprising:
- a receiver that receives downlink control information;
- and
- a processor that determines, based on the downlink control information, a single subcarrier that is used for transmission of the retransmission control information from a plurality of subcarriers that are limited to be less than a maximum number of subcarriers available to the user terminal.
A radio base station receiving retransmission control information of a downlink shared channel from a user terminal, the radio base station comprising:
- a transmitter that transmits downlink control information;
- and
- a processor that controls retransmission of the downlink shared channel based on the retransmission control information,
- wherein the radio base station receives the retransmission control information by using a single subcarrier that is determined, based on the downlink control information, from a plurality of subcarriers that are limited to be less than a maximum number of subcarriers available to the user terminal.
A radio communication method for a user terminal transmitting retransmission control information of a downlink shared channel, the radio communication method comprising:
- receiving downlink control information;
- and
- determining, based on the downlink control information, a single subcarrier that is used for transmission of the retransmission control information from a plurality of subcarriers that are limited to be less than a maximum number of subcarriers available to the user terminal.
Dependencies are inferred from the claim text.