User terminal and radio communication method
To prevent deterioration of communication quality even when uplink data and uplink control information are transmitted by using an uplink shared channel in a future radio communication system, one aspect of a user terminal according to the present invention includes: a transmission section that transmits an uplink shared channel over multiple slots based on an instruction from a base station; and a control section that performs control to multiplex uplink control information on the uplink shared channel in at least one slot of the plurality of slots to transmit.
1. A terminal comprising:
a reception section that receives a downlink shared channel that is scheduled by first downlink control information; and
a control section that, when the terminal transmits an uplink shared channel over multiple slots and at least one slot of the multiple slots overlaps with a slot in which the terminal transmits a transmission acknowledgement signal for the downlink shared channel, controls to map the transmission acknowledgement signal in transmission of the uplink shared channel in a specific slot of the multiple slots,
wherein the control section applies, in each of the multiple slots, intra-slot frequency hopping to the uplink shared channel, and
wherein the control section maps, in each of the multiple slots, a demodulation reference signal to a first symbol of each of an uplink shared channel domain of a first hop and an uplink shared channel domain of a second hop.
2. The terminal according to claim 1 , wherein the control section determines the specific slot based on the first downlink control information.
3. The terminal according to claim 1 , wherein the control section determines allocation of the uplink shared channel based on second downlink control information and higher layer signaling.
4. The terminal according to claim 2 , wherein the control section determines allocation of the uplink shared channel based on second downlink control information and higher layer signaling.
5. A radio communication method for a terminal, comprising:
receiving a downlink shared channel that is scheduled by first downlink control information; and
when the terminal transmits an uplink shared channel over multiple slots and at least one slot of the multiple slots overlaps with a slot in which the terminal transmits a transmission acknowledgement signal for the downlink shared channel, controlling to map the transmission acknowledgement signal in transmission of the uplink shared channel in a specific slot of the multiple slots;
applying, in each of the multiple slots, intra-slot frequency hopping to the uplink shared channel; and
mapping, in each of the multiple slots, a demodulation reference signal to a first symbol of each of an uplink shared channel domain of a first hop and an uplink shared channel domain of a second hop.
6. A base station comprising:
a transmission section that transmits a downlink shared channel that is scheduled by first downlink control information; and
a control section that, when a terminal transmits an uplink shared channel over multiple slots and at least one slot of the multiple slots overlaps with a slot in which the terminal transmits a transmission acknowledgement signal for the downlink shared channel, controls to receive the transmission acknowledgement signal that is mapped in transmission of the uplink shared channel in a specific slot of the multiple slots,
wherein, in each of the multiple slots, intra-slot frequency hopping is applied to the uplink shared channel, and
wherein, in each of the multiple slots, a demodulation reference signal is mapped to a first symbol of each of an uplink shared channel domain of a first hop and an uplink shared channel domain of a second hop.
7. A system comprising a terminal and a base station, wherein:
the terminal comprises:
a reception section that receives a downlink shared channel that is scheduled by first downlink control information; and
a first control section that, when the terminal transmits an uplink shared channel over multiple slots and at least one slot of the multiple slots overlaps with a slot in which the terminal transmits a transmission acknowledgement signal for the downlink shared channel, controls to map the transmission acknowledgement signal in transmission of the uplink shared channel in a specific slot of the multiple slots,
wherein the first control section applies, in each of the multiple slots, intra-slot frequency hopping to the uplink shared channel, and
wherein the first control section maps, in each of the multiple slots, a demodulation reference signal to a first symbol of each of an uplink shared channel domain of a first hop and an uplink shared channel domain of a second hop; and
the base station comprises:
a transmission section that transmits the downlink shared channel; and
a second control section that controls to receive the transmission acknowledgement signal.