Abstract: A terminal receives a slot that includes a plurality of symbols. The terminal determines the number of symbols included in a sub-frame on the basis of a time length of the symbol.

Abstract: A terminal is disclosed including a receiving section that receives information indicating a first number of preamble transmission, the information being a condition for switching from a 2-step random access procedure to a 4-step random access procedure, and information indicating a second number which is a maximum number of preamble transmission; and a control section that when a number of preamble transmission is the first number, controls to switch from a 2-step random access procedure to a 4-step random access procedure, and when the number of preamble transmission is the second number, determines a failure of the 4-step random access procedure. In other aspects a radio communication method and a system are also disclosed.

Abstract: A terminal is disclosed including a receiver that receives a synchronization signal block (SSB); a processor that determines, based on the SSB, a time resource for a preamble used for a 2-step random access procedure, and determines, based on the SSB, a time resource for an uplink shared channel (PUSCH) used for the random access procedure; and a transmitter that transmits the preamble and the PUSCH. In other aspects a radio communication method, a base station, and a system are also disclosed.

Abstract: A terminal according to one aspect of the present disclosure includes a control section that selects an uplink control channel resource included in a specific uplink control channel resource set when a first uplink control channel resource for first uplink control information corresponding to a first type and a second uplink control channel resource for second uplink control information corresponding to a second type collide with each other, and a transmitting section that transmits the first uplink control information and the second uplink control information by using the selected uplink control channel resource.

Abstract: One aspect of a terminal in the present disclosure includes a transmitting section that transmits first information notifying occurrence of a beam failure when the beam failure is detected, and second information related to at least one of a cell in which the beam failure is detected and a new candidate beam; and a control section that controls to perform at least one of reception of downlink control information that indicates the transmission of the second information and transmission of the second information in a period configured after transmitting the first information.

Abstract: A user equipment in a wireless communication system includes a configuration information management unit configured to retain configuration information for transmitting a reference signal used for measuring interference in other user equipments, and a signal transmitter configured to transmit the reference signal based on the configuration information. When transmission of the reference signal contends with transmission or reception of another signal, the signal transmitter determines whether the reference signal is to be transmitted or not based on a predetermined priority level.

Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines mapping of a sequence of a redundancy version (RV) which is to be applied for a channel that is repeatedly transmitted, to each transmission occasion, based on a field of downlink control information (DCI) for scheduling the channel, and a receiving section that receives the channel based on the mapping. According to one aspect of the present disclosure, repetition processing can be appropriately controlled.

Abstract: A user terminal according to an aspect of the present disclosure includes a control section that generates a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) codebook containing only HARQ-ACK corresponding to a semi-persistent scheduling (SPS) downlink shared channel (Physical Downlink Shared Channel (PDSCH)), so that HARQ-ACK bits corresponding to the PDSCH each SPS are ordered in accordance with a given rule, and a transmitting section that transmits an HARQ-ACK information bit corresponding to the HARQ-ACK codebook by using an uplink control channel resource based on an SPS corresponding to HARQ-ACK at a specific location in the order. According to an aspect of the present disclosure, it is possible to feed back HARQ-ACK appropriately even when a plurality of SPSs is utilized.

Abstract: A user terminal is disclosed including a control section that determines whether or not to allow detection of two or more downlink control information (DCI) formats of a plurality of downlink control channels of which first symbols are received in a same symbol in some slot which are the two or more DCI formats for scheduling downlink shared channel (Physical Downlink Shared Channel (PDSCH)) reception or release of semi-persistent scheduling PDSCH in a same cell, and for indicating corresponding Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) transmission in a same period, based on at least one of a given higher layer signaling index and a subslot index, and a transmitting section that performs the corresponding HARQ-ACK transmission in the same period using respective different uplink control channel resources, when the detection of the two or more DCI formats is allowed.

Abstract: To appropriately control, even when transmission of a downlink shared channel from different TRPs is performed repetitively, reception of the downlink shared channel. A user terminal according to an aspect of the present disclosure includes a receiving section that receives, on the basis of downlink control information, a downlink shared channel repetitively transmitted, and a control section that controls, in a case where a period from reception of the downlink control information until reception of the downlink shared channel is less than a certain threshold value, a TCI state for repetitions of the downlink shared channel on the basis of a specific set out of sets of configured transmission configuration indication states (TCI states).

Abstract: There is provided a user equipment including a receiving unit that receives control information and data; a control unit that specifies a sub-slot for transmitting a Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) for the data received by the receiving unit based on the control information received by the receiving unit, configures resource sets of one or more uplink control channels used for HARQ-ACK bit transmission for the specified sub-slot, selects a resource set of one uplink control channel among the resource sets of the one or more uplink control channels based on payload size of uplink control information including the HARQ-ACK, and selects one resource among one or more resources included in the resource set of the selected one uplink control channel based on the control information received by the receiving unit; and a transmitting unit that transmits the uplink control information using the selected one resource.

Abstract: A user terminal according to an aspect of the present disclosure includes a receiving section that receives downlink shared channels (Physical Downlink Shared Channels (PDSCHs)) from a plurality of transmission/reception points (TRPs), and a control section that identifies, based on a correspondence relationship among Physical Uplink Control Channel (PUCCH)) resources, groups for TRPs, and groups for spatial relation information (SRI), the TRP and SRI associated with a PUCCH for the PDSCHs. According to an aspect of the present disclosure, HARQ-ACK control can be suitably implemented even in a case where multiple TRPs are used.

Abstract: To preferably carry out HARQ-ACK control even in a case where multiple TRPs are used. A user terminal according to an aspect of the present disclosure includes: a receiving section that receives a first PDSCH (Physical Downlink Shared Channel) from a first transmission/reception point (TRP), and a second PDSCH from a second TRP whose at least one of time and frequency resources overlaps with the first PDSCH; and a control section that transmits a first Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) for the first PDSCH to the first TRP, and controls first control of transmitting a second HARQ-ACK for the second PDSCH to the second TRP and second control of transmitting both of the first HARQ-ACK and the second HARQ-ACK to one of the first TRP and the second TRP, based on downlink control information for scheduling at least one of the first PDSCH and the second PDSCH.

Abstract: A user terminal according to an aspect of the present disclosure includes: a receiving section that receives a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), based on one piece of downlink control information; and a control section that determines a number of default Quasi-Co-Locations (QCLs) to be applied to the PDSCH, based on the downlink control information. According to an aspect of the present disclosure, DL communication can be preferably carried out even in a case where multiple panels/TRPs are used.

Abstract: A user terminal includes a receiving section that receives information indicating a type of a codebook corresponding to each service, and a transmitting section that maps, to the codebook, delivery confirmation information for a downlink shared channel associated with each service and that transmits the codebook. Thus, feedback of an HARQ-ACK can be flexibly controlled.

Abstract: At least one of determination or feedback of a HARQ-ACK codebook is appropriately controlled. A user terminal according to one aspect of the present disclosure includes: a control section that determines, in a case where different subcarrier spacings are configured for an uplink and a downlink, on the basis of a hybrid automatic repeat request-acknowledgement (HARQ-ACK) timing value indicated by the number of first time units shorter than a slot for the uplink, a set of one or more candidate opportunities for receiving a downlink shared channel within a given number of the first time units; and a transmitting section that transmits a codebook determined on the basis of the set of the candidate opportunities.

Abstract: One aspect of a user terminal according to the present invention includes: a receiving section that receives a downlink shared channel transmitted from a plurality of transmission/reception points; and a control section that controls transmission of a transmission confirmation signal for the downlink shared channel, based on at least one of a count value of DL assignment jointly controlled between the plurality of transmission/reception points, and an index of the transmission/reception points and a count value of DL assignment separately controlled between the plurality of transmission/reception points.

Abstract: One aspect of a user terminal according to the present invention includes: a receiving section that receives a downlink shared channel transmitted from a plurality of transmission/reception points; and a control section that controls transmission of a transmission confirmation signal corresponding to the downlink shared channel, based on downlink control information including at least one of a count value and a total value of DL assignment jointly controlled in the plurality of transmission/reception points.

Abstract: A user terminal includes: a receiving section that receives one or more pieces of configuration information indicating a periodicity shorter than one slot; and a control section that controls transmission of a plurality of pieces of delivery confirmation information for a plurality of downlink shared channels, the plurality of pieces of delivery confirmation information being respectively received in a plurality of reception occasions configured by the configuration information. As a result, it is possible to appropriately control feedback of the plurality of pieces of delivery confirmation information for the plurality of downlink shared channels in which a periodicity shorter than one slot is configured.

Abstract: A user terminal according to one aspect of the present disclosure includes a control section that generates a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) codebook including a first HARQ-ACK sub-codebook related to transport block (TB)-based physical downlink shared channel (PDSCH), a second HARQ-ACK sub-codebook related to code block group (CBG)-based PDSCH, and a third HARQ-ACK sub-codebook related to semi-persistent scheduling (SPS), and a transmitting section that transmits HARQ-ACK information bits corresponding to the HARQ-ACK codebook by using one uplink control channel. According to one aspect of the present disclosure, the HARQ-ACK codebook can be appropriately generated even when the multiple SPSs are used.