Terminal, radio communication method, and base station
A terminal according to an aspect of the present disclosure includes a receiving section that receives a piece of downlink control information of a plurality of pieces of downlink control information, and a control section that uses, among a plurality of reception occasions, a reception occasion corresponding to a quasi-co-location (QCL) parameter for receiving data, in which the plurality of pieces of downlink control information schedules each of the plurality of reception occasions, and the data is transmitted in each of the plurality of the reception occasions. According to one aspect of the present disclosure, multicast downlink data can be appropriately received.
1 . A terminal comprising:
a receiver that receives downlink control information (DCI) scheduling a multicast physical downlink shared channel (PDSCH); and
a processor that controls reception of the multicast PDSCH on four reception occasions,
wherein one transport block is transmitted on each of the four reception occasions,
the DCI is transmitted with cyclic redundancy check (CRC) scrambled by a specific radio network temporary identifier (RNTI) for scheduling the multicast PDSCH,
the transport block is scrambled using the specific RNTI,
the receiver receives a first configuration including a first time domain resource allocation for a terminal-specific PDSCH and a second configuration including a second time domain resource allocation for the multicast PDSCH, and
the processor determines time domain resource allocation and a transmission configuration indication (TCI) state for a first reception occasion among the four reception occasions based on the second configuration, determines time domain resource allocations for second, third and fourth reception occasions among the four reception occasions based on the time domain resource allocation for the first reception occasion, and determines TCI states for the second, third and fourth reception occasions based on the TCI state for the first reception occasion.
2 . The terminal according to claim 1 , wherein the receiver monitors the DCI in a common search space for the multicast PDSCH.
3 . The terminal according to claim 1 , wherein presence of a TCI field in the DCI is configured, and the DCI includes the TCI field.
4 . A radio communication method for a terminal, comprising:
receiving downlink control information (DCI) scheduling a multicast physical downlink shared channel (PDSCH); and
controlling reception of the multicast PDSCH on four reception occasions,
wherein one transport block is transmitted on each of the four reception occasions,
the DCI is transmitted with cyclic redundancy check (CRC) scrambled by a specific radio network temporary identifier (RNTI) for scheduling the multicast PDSCH,
the transport block is scrambled using the specific RNTI,
the terminal receives a first configuration including a first time domain resource allocation for a terminal-specific PDSCH and a second configuration including a second time domain resource allocation for the multicast PDSCH, and
the terminal determines time domain resource allocation and a transmission configuration indication (TCI) state for a first reception occasion among the four reception occasions based on the second configuration, determines time domain resource allocations for second, third and fourth reception occasions among the four reception occasions based on the time domain resource allocation for the first reception occasion, and determines TCI states for the second, third and fourth reception occasions based on the TCI state for the first reception occasion.
5 . A base station comprising:
a transmitter that transmits downlink control information (DCI) scheduling a multicast physical downlink shared channel (PDSCH); and
a processor that controls transmission of the multicast PDSCH on four transmission occasions,
wherein one transport block is transmitted on each of the four transmission occasions,
the DCI is transmitted with cyclic redundancy check (CRC) scrambled by a specific radio network temporary identifier (RNTI) for scheduling the multicast PDSCH,
the transport block is scrambled using the specific RNTI,
the transmitter transmits a first configuration including a first time domain resource allocation for a terminal-specific PDSCH and a second configuration including a second time domain resource allocation for the multicast PDSCH, and
the processor determines time domain resource allocation and a transmission configuration indication (TCI) state for a first transmission occasion among the four transmission occasions based on the second configuration, determines time domain resource allocations for second, third and fourth transmission occasions among the four transmission occasions based on the time domain resource allocation for the first transmission occasion, and determines TCI states for the second, third and fourth transmission occasions based on the TCI state for the first transmission occasion.
6 . A system comprising a terminal and a base station, wherein
the terminal comprises:
a receiver that receives downlink control information (DCI) scheduling a multicast physical downlink shared channel (PDSCH); and
a processor that controls reception of the multicast PDSCH on four reception occasions,
one transport block is transmitted on each of the four reception occasions,
the DCI is transmitted with cyclic redundancy check (CRC) scrambled by a specific radio network temporary identifier (RNTI) for scheduling the multicast PDSCH,
the transport block is scrambled using the specific RNTI,
the receiver receives a first configuration including a first time domain resource allocation for a terminal-specific PDSCH and a second configuration including a second time domain resource allocation for the multicast PDSCH,
the processor determines time domain resource allocation and a transmission configuration indication (TCI) state for a first reception occasion among the four reception occasions based on the second configuration, determines time domain resource allocations for second, third and fourth reception occasions among the four reception occasions based on the time domain resource allocation for the first reception occasion, and determines TCI states for the second, third and fourth reception occasions based on the TCI state for the first reception occasion, and
the base station transmits the DCI.