Abstract: A terminal includes: a control unit configured to perform a process related to transmission in a case where one or more of feedback channels in a first carrier overlap in at least a time domain with either a channel or a signal in a second carrier in a device to device direct communication in which carrier aggregation is applied; and a transmission unit configured to transmit at least one of: the one or more of the feedback channels; or the channel or the signal. The control unit performs prioritization regarding which channel or signal is to be prioritized, and performs at least one of controlling of transmission power or stopping of transmission, based on the prioritization.

Abstract: A terminal apparatus includes a receiver and a transmitter. The receiver receives, from a base station, a downlink assignment index (DAI) that is transmitted by means of a downlink control information (DCI) format. The DAI indicates an accumulative number of a transmitted physical downlink shared channel (PDSCH) included in a group of PDSCHs. A range of the accumulative number of which the DAI is indicative is variably configured. The transmitter, in operation, transmits, to the base station, hybrid automatic repeat request acknowledgement (HARQ-ACK) information based on the DAI.

Abstract: A terminal according to one aspect of the present disclosure includes a transmitting section that transmits a plurality of repetitions of a physical random access channel by using a plurality of different beams, and a control section that determines a reference beam corresponding to one of the plurality of different beams and that determines, on the basis of reception of a response to the physical random access channel, a subsequent uplink beam, the reception using the reference beam. According to one aspect of the present disclosure, it is possible to improve coverage in a random access procedure.

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives one or more reference signal configurations, and a control section that controls, based on at least one of information related to a reference signal and a specific condition, application of at least one reference signal configuration of the reference signal configurations. According to one aspect of the present disclosure, it is possible to implement suitable RS resource use.

Abstract: The present invention improves the reliability of a transmission channel. A transmission terminal according to the present invention is equipped with: a control circuit that, on the basis of a time resource quantity used to determine the transmission size of a first channel in one time segment of either a first time segment in which the first channel and a second channel are disposed or a second time segment in which the first channel is disposed, determines the transmission size in the other time segment; and a transmission circuit that, on the basis of the determined transmission size, performs a transmission process for the first channel in the first time segment and the second time segment.

Abstract: A terminal according to one aspect of the present disclosure includes: a control section that performs, for transmission of a reference signal for measurement (Sounding Reference Signal (SRS)) of an SRS resource of at least one of a plurality of SRS resources, control of whether to perform transmission or transmission in a different SRS resource, when a time difference between the plurality of SRS resources is smaller than a given value; and a transmitting section that transmits the SRS, based on a result of the control. According to one aspect of the present disclosure, it is possible to appropriately perform SRS transmission.

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that attempts to receive a first synchronization block; and a control section that controls reception of a second synchronization signal block, based on a reception result of the first synchronization signal block. According to one aspect of the present disclosure, coverage can be improved by taking account of overhead.

Abstract: A terminal receives a plurality of downlink data channels scheduled by a single downlink control information, and assumes that if any downlink data channel collides with an uplink symbol, the downlink data channel cancelled by the collision is excluded from the specific scheduling.

Abstract: A terminal includes: a reception unit configured to receive a signal from another terminal in a resource pool for which a partial sensing is configured; a control unit configured to determine a first resource of a sensing target, and determine an available resource set by identifying candidate resources based on a sensing result of the first resource according to the reception unit; and a transmission unit configured to select a second resource used for transmission from the resource set, and transmit a signal using the second resource. The control unit determines a procedure of performing reevaluation or preemption check, based on whether the second resource is a resource reserved by periodic reservation.

Abstract: A terminal according to one aspect of the present disclosure includes: a control section that determines one operation from a plurality of operations including a first operation of receiving a plurality of first reference signals in a cell and a second operation of receiving a plurality of second reference signals in the cell; and a receiving section that receives at least one of the plurality of first reference signals and the plurality of second reference signals, according to the one operation. The number of the plurality of second reference signals is larger than the number of the plurality of first reference signals. According to one aspect of the present disclosure, coverage can be improved in consideration of overhead.

Abstract: A terminal apparatus includes a receiver and a transmitter. The receiver receives, from a base station, a downlink assignment index (DAI) that is transmitted by means of a downlink control information (DCI) format. The DAI indicates an accumulative number of a transmitted physical downlink shared channel (PDSCH) included in a group of PDSCHs. A range of the accumulative number of which the DAI is indicative is variably configured. The transmitter, in operation, transmits, to the base station, hybrid automatic repeat request acknowledgement (HARQ-ACK) information based on the DAI.

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section configured to receive a configuration related to a transmission comb of a sounding reference signal (SRS); and a control section configured to determine, based on the configuration and a bandwidth of the SRS, at least one of the number of the transmission combs, a maximum number of cyclic shifts, and a number of the cyclic shift. According to one aspect of the present disclosure, an SRS parameter can be appropriately determined.

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a downlink control channel for transmitting one piece of downlink control information for scheduling a plurality of downlink shared channels, and a control section that, when at least one codepoint of a transmission configuration indication (TCI) notification field configured in the downlink control information indicates a plurality of TCI states, judges at least one of a quasi-co-location (QCL) and a TCI state corresponding to the plurality of respective downlink shared channels, based on whether offset between the downlink control channel and at least one of the plurality of downlink shared channels is less than a certain threshold value.

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives configuration for a plurality of sounding reference signal (SRS) resource sets and receives downlink control information indicating triggering of an SRS; and a control section that controls transmission of the SRS by using one or more SRS resource sets indicated in the downlink control information out of the plurality of SRS resource sets, wherein a timing for the transmission of the SRS is based on a timing for reception of the downlink control information and on a first offset and a second offset included in the one or more SRS resource sets. According to one aspect of the present disclosure, it is possible to flexibly control SRS triggering.

Abstract: A terminal includes: a reception unit configured to receive a signal indicating a configuration of a scheduling offset value that is extended for a communication using a frequency band that is equal to or greater than a reference value from a base station; and a control unit configured to expect that downlink data to be transmitted from the base station or uplink data to be transmitted to the base station is to be scheduled by applying the scheduling offset value that is extended for the frequency band.

Abstract: A terminal includes: a reception unit configured to receive a plurality of information items indicating at least one of a preferred resource and a non-preferred resource in a resource pool from a plurality of terminals; a control unit configured to perform selection of a resource in the resource pool based on at least one of the plurality of information items; and a transmission unit configured to perform transmission using the selected resource. The control unit determines which one of the plurality of information items is to be applied to the selection of the resource.

Abstract: A terminal includes: a reception unit configured to receive a configuration related to an uplink control channel from a base station; a control unit configured to determine a resource of the uplink control channel, based on the configuration; and a transmission unit configured to transmit the uplink control channel via the resource. In a case where the configuration indicates that frequency hopping is disabled, the control unit causes a base sequence applied to a hop of a first half of the resource to be different from a base sequence applied to a hop of a second half of the resource, and determines the resource to be different from a resource used by a UE that is not a function-reduced UE.

Abstract: A terminal includes: a reception unit configured to receive a signal from another terminal in a resource pool to perform sensing; a control unit configured to perform DRX (Discontinuous reception) in the resource pool and determine a resource to be used for transmission based on a result of the sensing; and a transmission unit configured to perform transmission of data to the another terminal using the determined resource. The control unit determines an operation related to sensing during DRX inactivity time, based on a sensing method and a terminal capability.

Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that attempts reception of a first synchronization signal block; and a control section that controls, when the reception of the first synchronization signal block has failed, transmission of a preamble by using a random access occasion for report of the failure. According to one aspect of the present disclosure, coverage can be improved by taking account of overhead.

Abstract: A terminal includes: a reception unit configured to receive from a base station: a block including a synchronization signal and a broadcast channel; a control channel carrying control information; and a shared channel carrying system information, based on the control information; and a control unit configured to perform an initial access to the base station, based on the system information. Information included in the broadcast channel includes at least one of information related to QCL (Quasi co-location), information related to LBT (Listen before talk), information related to DBTW (Discovery burst transmission window), and information indicating whether a band is a licensed band or an unlicensed band.