Terminal, radio communication method, and base station
A terminal according to one aspect of the present disclosure includes a receiving section that receives information related to a transmission path for at least a part of UL data; and a control section that determines at least one of a transmission method of the UL data and a second terminal other than the terminal, the second terminal being notified of at least the part of the UL data, based on at least one of the information related to the transmission path and downlink control information used for scheduling of the UL data.
1 . A terminal comprising:
a receiver that receives information related to a transmission path for at least a part of UL data;
a processor that determines at least one of a transmission method of the UL data and a second terminal other than the terminal, the second terminal being notified of at least the part of the UL data, based on at least one of the information related to the transmission path and downlink control information (DCI) used for scheduling of the UL data; and
a transmitter that, when receiving first DCI as the DCI, transmits the UL data without cooperating between an antenna port of the terminal and an antenna port of an other transmitting apparatus, and when receiving second DCI larger in size than the first DCI, transmits the UL data by cooperating between the antenna port of the terminal and the antenna port of the other transmitting apparatus and performs transmission of a physical uplink shared channel (PUSCH) as the UL data in a spatial relation equal to a spatial relation of an antenna port for transmission of a sounding reference signal (SRS) as the UL data.
2 . The terminal according to claim 1 , wherein the transmission path for at least the part of the UL data corresponding to initial transmission and the transmission path for at least the part of the UL data corresponding to retransmission are separately configured.
3 . The terminal according to claim 1 , wherein when the processor retransmits UL data not having been notified to the second terminal out of the UL data in the initial transmission, the processor performs control to notify the second terminal of the UL data not having been notified to the second terminal.
4 . The terminal according to claim 1 , wherein the processor determines whether or not to cooperate with the second terminal and transmit the UL data, based on a parameter corresponding to the DCI.
5 . The terminal according to claim 2 , wherein when the processor retransmits UL data not having been notified to the second terminal out of the UL data in the initial transmission, the processor performs control to notify the second terminal of the UL data not having been notified to the second terminal.
6 . The terminal according to claim 2 , wherein the processor determines whether or not to cooperate with the second terminal and transmit the UL data, based on a parameter corresponding to the DCI.
7 . The terminal according to claim 3 , wherein the processor determines whether or not to cooperate with the second terminal and transmit the UL data, based on a parameter corresponding to the DCI.
8 . A radio communication method for a terminal, comprising:
receiving information related to a transmission path for at least a part of UL data;
determining at least one of a transmission method of the UL data and a second terminal other than the terminal, the second terminal being notified of at least the part of the UL data, based on at least one of the information related to the transmission path and downlink control information (DCI) used for scheduling of the UL data; and
transmitting, when receiving first DCI as the DCI, the UL data without cooperating between an antenna port of the terminal and an antenna port of an other transmitting apparatus, and when receiving second DCI larger in size than the first DCI, transmitting the UL data by cooperating between the antenna port of the terminal and the antenna port of the other transmitting apparatus and performing transmission of a physical uplink shared channel (PUSCH) as the UL data in a spatial relation equal to a spatial relation of an antenna port for transmission of a sounding reference signal (SRS) as the UL data.
9 . A base station comprising:
a transmitter that transmits information related to a transmission path for at least a part of UL data to a terminal;
a processor that indicates, for the terminal, at least one of a transmission method of the UL data and a second terminal other than the terminal, the second terminal being notified of at least the part of the UL data, by using at least one of the information related to the transmission path and downlink control information (DCI) used for scheduling of the UL data; and
a receiver that, when transmitting first DCI as the DCI, receives the UL data without cooperating between an antenna port of the terminal and an antenna port of an other transmitting apparatus, and when transmitting second DCI larger in size than the first DCI, receives the UL data by cooperating between the antenna port of the terminal and the antenna port of the other transmitting apparatus and performs receiving of a physical uplink shared channel (PUSCH) as the UL data in a spatial relation equal to a spatial relation of an antenna port for transmission of a sounding reference signal (SRS) as the UL data.