Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits an uplink shared channel by applying a precoder; and a control section that specifies a number of ports used to determine the precoder when a Sounding Reference Signal (SRS) resource is not configured. According to one aspect of the present disclosure, even when an SRS resource is not configured, it is possible to appropriately determine a precoder of a UL signal.

Abstract: A user equipment in a radio communication system including the user equipment and a base station, including: an uplink transmission power information calculation unit configured to calculate uplink transmission power information of a serving cell using a parameter that may be changed dynamically; and a signal transmission unit configured to include, in control information in which the uplink transmission power information is set, identification information for identifying a parameter used for calculation of the uplink transmission power information, and to transmit the control information in which the identification information is included to the base station.

Abstract: A terminal is disclosed including a processor that identifies a resource for a Channel State Information-Reference Signal (CSI-RS); and a transmitter that transmits a Sounding Reference Signal (SRS) by using a precoder based on the resource that was last transmitted. In other aspects, a radio communication method and a base station are also disclosed.

Abstract: One aspect of the present disclosure is designed to control UL transmission and the like properly by using timing advances when beamforming is employed. A user terminal, according to the aspect of the present disclosure, has a transmission section that transmits one or more UL signals based on one or more timing advances, and a control section that controls a timing advance to apply to transmission of a UL signal based on at least one of UL resource information, antenna port information and beam information for the UL signal.

Abstract: A user equipment communicates with a base station using a first RAT and a second RAT, including: a transmission unit to perform uplink transmission using the first RAT and the second RAT; a control unit to, if a sum of transmission powers of the uplink transmission via the first RAT and the second RAT exceeds a predetermined maximum transmission power, reduce the transmission power of the uplink transmission via the second RAT. If the sum exceeds a maximum transmission power and the transmission unit fails to transmit random access preamble via the second RAT and re-transmits the random access preamble, or if dynamic power sharing is not supported and the random access preamble is not transmitted via the second RAT in a slot where an uplink transmission via the first RAT is scheduled, the control unit changes transmission power control for the re-transmitted random access preamble from normal control.

Abstract: In accordance with one aspect of the present disclosure, a user terminal has a receiving section that receives downlink control information, a transmission section that transmits an uplink signal based on the downlink control information, and a control section that changes interpretation of a specific field, included in the downlink control information, depending on whether a waveform to apply to the uplink signal has already been indicated or not. According to one aspect of the present disclosure, it is possible to reduce the decline in communication throughput even when a number of waveforms are switched around and used.

Abstract: A user terminal according to one aspect of the present disclosure includes: a control section that determines a step size of a value of a Power Headroom (PH) per increase of an index related to the PH or a range of a value of the PH associated with the index based on a given condition; and a transmitting section that transmits a Power Headroom Report (PHR) including the index. According to one aspect of the present disclosure, it is possible to report an appropriate PH in future radio communication systems, too.

Abstract: A terminal is disclosed including a receiver that receives an index related to power control; a controller that determines a transmission power in accordance with a transmission power parameter set determined from the index; and a transmitter that transmits a power headroom report (PHR) including information about a power headroom (PH) corresponding to the index. In other aspects, a radio communication method for a terminal is also disclosed.

Abstract: A terminal is disclosed including a transmitter that transmits information regarding at least one reception power (RSRP: Reference Signal Received Power) and a processor that, when reporting of a first RSRP and a second RSRP is carried out, controls to transmit a value corresponding to the first RSRP, and a value corresponding a difference between the first RSRP and the second RSRP. In other aspects, a radio communication method is disclosed.

Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that performs transmission by using a plurality of Radio Access Technologies (RATs); a receiving section that receives allocation configuration information including a plurality of pieces of information each related to an allocation of maximum transmission power for each of the plurality of RATs; and a control section that determines an allocation of maximum transmission power of each of the plurality of RATs from a plurality of allocations, based on the allocation configuration information. According to one aspect of the present disclosure, reduction of throughput and so on can be prevented even when a plurality of RATs are used.

Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that performs uplink (UL) data transmission, independently of a UL transmission indication from a radio base station; a receiving section that receives information of a plurality of candidates, regarding a value of a parameter used for the UL data transmission; and a control section that determines application of a value determined based on the information of the plurality of candidates to the UL data transmission. According to one aspect of the present disclosure, communication throughput reduction and so on can be prevented even when UL grant-free transmission is performed.

Abstract: According to one aspect of the present invention, a user terminal has a transmission section that is capable of switching between and transmitting a plurality of waveforms, including a waveform that is based on a first transmission scheme and a waveform that is based on a second transmission scheme, and transmits the first waveform, which is one of the plurality of waveforms, at a given timing, by using a given cell, and a control section that calculates a power headroom for the second waveform, which is one of the plurality of waveforms and which is not transmitted at the given timing. According to one aspect of the present invention, communication can be continued adequately even when communication is performed by using multiple waveforms.

Abstract: The present disclosure is to more reliably determine whether an active-system server appropriately provides a service to a client. A cluster system (1) includes an active-system server (2) that provides a predetermined service to a client device through a network (4) and a standby-system server (3) that provides the predetermined service to the client device in place of the active-system server (2) when an abnormality occurs in the active-system server (2). The standby-system server (3) includes a monitoring unit (6) that accesses the predetermined service provided by the active-system server (2) through the network (4) to monitor whether the predetermined service is normally accessible. The active-system server (2) includes a cluster controlling unit (5) that performs a failover when the monitoring unit (6) of the standby-system server (3) determines that the predetermined service provided by the active-system server (2) is not normally accessible.

Abstract: A user terminal according to one aspect of the present disclosure is characterized by having a control section that applies power reduction to transmit power in a given carrier, and a transmitting section that transmits a given signal using transmit power applied with the power reduction. According to one aspect of the present disclosure, it is possible to suppress degradation in communication throughput and the like, also in the case of performing power reduction.

Abstract: According to one aspect of the present invention, a user terminal has a transmission section that transmits a signal in a plurality of CGs, including a first cell group (CG) and a second CG corresponding to a longer slot length than the first CG, and a control section that controls transmission power in each CG, and the control section switches a transmission power control policy in a certain slot based on whether or not the certain slot of the first CG overlaps with a slot boundary of the second CG. According to one aspect of the present invention, even when multiple numerologies are supported in a given carrier, it is possible to reduce the decline in communication throughput and so forth.

Abstract: Provided is a communication device. The communication device communicating with another communication device, includes: a reception unit configured to receive a signal transmitted from the another communication device; a transmission unit configured to transmit a signal to the another communication device; and a control unit configured to determine a weighting vector to be used in the reception unit and a precoding vector to be used in the transmission unit, in which, in a case where a specific reference signal indicating that the weighting vector used for receiving the signal in the another communication device has been changed is received by the reception unit, the control unit determines the precoding vector to be used for signal transmission by performing channel estimation by using the received specific reference signal, and in which the transmission unit transmits data precoded with the precoding vector determined by the control unit.

Abstract: The apparatus according to one aspect of the present invention communicates using beams, and has a receiving section that receives information about a beam of another apparatus, and a control section that decides whether or not to select a transmitting beam autonomously, based on whether certain information is present or not. According to one aspect of the present invention, even when certain apparatus is capable of selecting beams autonomously, it is still possible to reduce the decline in communication throughput and so forth.

Abstract: Communication is suitably continued even when communication is performed by using a plurality of waveforms. A user terminal according to one aspect of the present invention includes: a transmission section that transmits a first signal and a second signal by using respectively different radio resources, the first signal conforming to a first transmission scheme-based waveform and the second signal conforming to a second transmission scheme-based waveform; and a control section that performs transmit power control on a signal to be transmitted.

Abstract: To suppress deterioration of reception quality also in the case of using beam forming in both transmission and reception, an apparatus according to one aspect of the present invention is characterized by having a receiving section that receives beam identification information indicative of a transmission beam, and a control section that determines a reception beam based on a received reference signal, where the control section acquires a first indicator about a match between the transmission beam and the reception beam.

Abstract: A terminal is disclosed including a processor and a transmitter. The processor determines, based on a threshold of a criterion, a beam having the criterion that is equal to or greater than the threshold. Further, the transmitter transmits a random access preamble based on the determined beam. In other aspects, a radio communication method for a terminal is also disclosed.