Abstract: A user equipment (UE) includes a transmitter that transmits, to a base station (BS), Demodulation Reference Signals (DM-RSs) using Discrete Fourier Transform (DFT)-spread (s)-Orthogonal Frequency-Division Multiplexing (OFDM). The resource elements (REs) that do not multiplex the DM-RSs in an OFDM symbol are set as Null. The transmission power for transmission of the DM-RSs is different from transmission power for transmission of normal DM-RSs. The normal DM-RS is a DM-RS using a Cyclic Prefix (CP)-OFDM. The UE further includes a processor that determines the transmission power for the DM-RSs based on a reciprocal of frequency multiplexing density of the DM-RSs. The transmission power for the DM-RSs is two times more than the normal DM-RSs when a configuration of the DM-RSs is a DM-RS configuration type 1. The transmission power for the DM-RSs is three times more than the normal DM-RSs when a configuration of the DM-RSs is a DM-RS configuration type 2.

Abstract: A terminal is disclosed that includes a transmitter that transmits an uplink (UL) signal which is precoded per precoding group that includes a given number of frequency resource units; and a processor that controls precoding of the UL signal. The processor determines a size of the precoding group of the UL signal based on a downlink signal (DL) signal. In other aspects, a radio communication method is also disclosed.

Abstract: The present invention is designed so that beamforming can be executed properly even when user terminals are in idle mode. A user terminal according to the present invention communicates with a radio base station that uses a plurality of beam patterns, and has a receiving section that performs a receiving process for paging information which is transmitted in varying beam patterns, in a paging time period comprised of a plurality of unit periods, and a transmission section that transmits a response signal in response to receipt of the paging information.

Abstract: A terminal is disclosed including a processor configured to map a phase tracking reference signal, PTRS, to at least one symbol used for an uplink shared channel; and a transmitter configured to perform transmission processing for the uplink shared channel and the PTRS, wherein the processor sets a reference for mapping the PTRS to a second symbol when the transmitter transmits a demodulation reference signal, DMRS, using a first symbol and the second symbol in the uplink shared channel. In other aspects, another terminal and a base station are also disclosed.

Abstract: The present invention is designed so that beamforming can be executed properly even when user terminals are in idle mode. A user terminal communicates with a radio base station that uses beamforming, and has a receiving section that receives a synchronization signal and/or a broadcast channel and a paging channel, which are transmitted using a single beam pattern or a plurality of beam patterns; and a control section that exerts control so that at least part of the paging channel is received based on a resource where the synchronization signal and/or the broadcast channel are allocated.

Abstract: A terminal is disclosed that includes a processor that performs channel measurement based on a first Channel State Information-Reference Signal (CSI-RS) and performs channel measurement based on a second CSI-RS; and a transmission section that transmits a first Channel State Information (CSI) feedback based on the first CSI-RS and a second CSI feedback based on the second CSI-RS. Additionally, when the first CSI-RS is an un-precoded CSI-RS, the first CSI feedback only includes a part of information of CSI feedback based on the un-precoded CSI-RS that is a precoding matrix indicator (PMI) or are the PMI and a rank indicator (RI). In another aspect, a CSI feedback method for a terminal is also disclosed.

Abstract: UE (200) includes a receiving unit (220) that receives a predetermined reference signal and a control unit (230) that performs quality monitoring of a radio link based on the reference signal. The control unit (230) determines a synchronous state of the radio link based on a first error rate threshold value or a second error rate threshold value, and even if the first error rate threshold value is changed to the second error rate threshold value at a predetermined timing, applies an evaluation period corresponding to the first error rate threshold value.

Abstract: A method is presented for transmitting uplink control information and a mobile station. The method for transmitting the uplink control information includes: adding padding bits to initial control information to generate uplink control information, where the initial control information includes first information having a same number of bits for RANKs of different channel matrices and second information having a same or different number of bits for RANKs of different channel matrices; and transmitting the uplink control information.

Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits information that indicates which beam correspondence that uses which downlink reference signal is supported; a receiving section that receives spatial relation information that indicates a downlink reference signal having a spatial relation with a sounding reference signal; and a control section that determines a spatial domain filter used to transmit an uplink signal, based on a spatial domain filter used to receive the downlink reference signal.

Abstract: Provided are a beam configuration method, a mobile station and a base station. The beam configuration method performed by a base station according to embodiments of the present invention includes: determining a beam transmission scheme for a mobile station according to performance of the mobile station; and transmitting information to the mobile station according to the beam transmission scheme.

Abstract: In one aspect, a user equipment is disclosed including a control unit configured to precode an uplink reference signal based on a downlink reference signal, and a transmission unit configured to transmit the precoded uplink reference signal. In another aspect, a transmission method is disclosed including precoding an uplink reference signal based on a downlink reference signal, and transmitting the precoded uplink reference signal.

Abstract: A terminal is disclosed that includes a receiver that receives, via higher layer signaling, configuration information indicating a first resource for interference measurement, a second resource of non-zero power (NZP) channel state information reference signal (CSI-RS) for interference measurement, and a third resource of NZP CSI-RS for channel measurement. The terminal also includes a processor that performs interference measurement by using the first resource or the second resource, and performs channel measurement by using the third resource. The configuration information indicates a plurality of combinations of a third resource candidate and at least one of a first resource candidate and a second resource candidate. The processor uses, for measurement, a combination indicated by downlink control information among the plurality of combinations. In other aspects, a radio communication method, a base station, and a system are also disclosed.

Abstract: To appropriately control UL transmission such as a CSI reporting when communication is performed by applying a different configuration from those of legacy LTE systems, one aspect of a user terminal according to the present invention includes: a transmitting section that transmits first Channel State Information (CSI) and second CSI of different information types to be reported, by using an uplink control channel and/or an uplink shared channel based on timings respectively configured by a base station; and a control section that, when transmission timings of the first CSI and the second CSI overlap, performs control to transmit both or one of the first CSI and the second CSI.

Abstract: A terminal is disclosed including a processor configured to map a phase tracking reference signal, PTRS, to at least one symbol used for an uplink shared channel starting from a leading symbol of the uplink shared channel; and a transmitter configured to perform transmission processing for the uplink shared channel and the PTRS. In other aspects, another terminal and a base station are also disclosed.

Abstract: A user terminal includes: a transmission section including a plurality of antennas; and a control section that controls the phase of a signal transmitted from the plurality of antennas to a base station. The control section performs control such that any one of first information and second information is notified to the base station, the first information is information indicating any of a plurality of array patterns that are adoptable by each antenna in a case where the plurality of antennas are all coherent, and the second information is information indicating the number of the coherent antennas in a case where at least two of the plurality of antennas are coherent.

Abstract: A user terminal includes: a transmitting section configured to transmit a signal based on a precoding matrix; and a control section configured to correct transmission power of the signal when a value of a part of the precoding matrix is zero. According to one aspect of the present disclosure, the transmission power when performing precoding can be appropriately determined.

Abstract: Provided are a user terminal, a radio base station, and a radio communication method that are capable of performing reception processing using the number of suitable MIMO layers for a downlink. The user terminal includes a reception section that receives a downlink signal from the radio base station. Furthermore, the user terminal includes a control section that assumes the maximum number of MIMO layers based on control information that is included in the downlink signal. In a case where the downlink signal includes first control information indicating the number of MIMO layers, the control section assumes the maximum number of MIMO layers based on the first control information.

Abstract: The present invention is designed so that beamforming can be executed properly even when user terminals are in idle mode. A user terminal according to the present invention communicates with a radio base station that uses a plurality of beam patterns, and has a receiving section that performs a receiving process for paging information which is transmitted in varying beam patterns, in a paging time period comprised of a plurality of unit periods, and a transmission section that transmits a response signal in response to receipt of the paging information.

Abstract: A method of acquiring Channel State Information (CSI) includes transmitting, from a Transmission and Reception Point (TRP) to a User Equipment (UE), information indicating that both of a Resource setting and a CSI reporting setting are commonly set to activation or deactivation. The Resource setting being set to the activation causes the UE to assume that CSI-Reference Signals (RSs) are to be transmitted from the TRP. The CSI reporting setting being set to the activation triggers the UE to perform CSI reporting. The method further includes receiving, with the UE, the CSI-RSs transmitted in accordance with a predetermined type of time domain behavior when the Resource setting is set to the activation. The method further includes performing, with the UE, the CSI reporting in accordance with the predetermined type of time domain behavior when the CSI reporting setting is set to activation.

Abstract: A method of transmission of Channel State Information Reference Signals (CSI-RSs) includes transmitting, from a base station (BS) to a user equipment (UE), the CSI-RSs using 24 antenna ports (APs) or 32 APs. A first CSI-RS configuration for the APs are configured by aggregating a predetermined number of second CSI-RS configurations. A number of APs per each of the second CSI-RS configurations is 2, 4, or 8.