Abstract: A terminal is disclosed including a receiver that receives downlink control information (DCI) including information indicating a mapping pattern of a demodulation reference signal, and a processor that controls reception of the demodulation reference signal based on the information indicating the mapping pattern of the demodulation reference signal. In other aspects, another terminal and a radio communication method are also disclosed.

Abstract: The present invention is designed so that, in a non-stand-alone radio communication system, multiple UL signals of varying RATs are transmitted properly. According to the present invention, a user terminal has a transmission section that transmits both a first uplink (UL) signal of a first radio access technology (RAT) and a second UL signal of a second RAT, or a single UL signal in which the first UL signal and the second UL signal are multiplexed, by using a UL carrier of the first RAT, and a control section that controls frequency division multiplexing and/or time division multiplexing of the first UL signal and the second UL signal in the UL carrier, or multiplexing of the first UL signal and the second UL signal in the single UL signal.

Abstract: eNB (100A) includes a TTI determining unit (130) that determines, based on a least common multiple and a greatest common divisor of a plurality of TTIs, a unit time interval in a time direction that defines Maximum number of DL/UL-SCH transport block bits and Maximum number of bits of a DL/UL-SCH transport block both assignable to each of DL-SCH and UL-SCH used by a user device, and a channel setting unit (140) that sets the DL-SCH and the UL-SCH based on the TTIs determined by the TTI determining unit (130).

Abstract: A user terminal includes a receiving section that receives first downlink control information (DCI) transmitted from a first radio base station in a first control resource set configured within a given bandwidth and a control section that controls at least one of reception of specific data from the first radio base station and transmission of the specific data to the first radio base station based on the first DCI. Consequently, it is possible to reduce interference between a plurality of cells where different services are provided.

Abstract: A user equipment according to one embodiment of the present invention includes a reception unit that receives signal waveform configuration information related to either or both of a multicarrier scheme and a single carrier scheme to be applicable in uplink communication from a base station, a setting unit that sets the received signal waveform configuration information, and a transmission unit that transmits an uplink signal in accordance with the set signal waveform configuration information.

Abstract: In user terminal 20, control section 202 determines signal waveforms according to a signal-waveform switching pattern notified by control section 102 of base station 10, and indicates the signal waveforms to preprocessing section 205, signal detection section 207, and post-processing section 208 for each TTI. Configuration IDs are assigned to respective signal-waveform switching patterns, and signal waveforms that are to be transmitted in TTIs and that are specified by the TTI index are configured for each of the Configuration IDs. With this configuration, a plurality of signal waveforms whose symbol lengths are different from one signal waveform to another are used together while no symbol spans two adjacent TTIs.

Abstract: The present invention is designed so that retransmission control and/or division transmission are executed properly when contention-based UL transmission is used. A transmission section that transmits UL data, and a control section that controls retransmission and/or division transmission of the UL data are provided, and the control section exerts control to perform new UL data transmission before the retransmission and/or initial transmission in the division transmission without UL grant from a radio base station, and the control section controls the retransmission and/or second and subsequent transmissions in the division transmission based on a response signal from the radio base station.

Abstract: Provided is a user terminal which is used in a future wireless communication system which bundles a plurality of slots (sub-frames) in the time direction. When applying bundling, in the leading slot, Additional DMRS (Demodulation Reference Signal) is mapped according to channel quality (factors which lead to a deterioration in quality, such as Doppler shift, propagation environment, etc.), and in second and subsequent slots, the existence of Additional DMRS mapping or the mapping position is selected on the basis of rules concerning Additional DMRS mapping. The control unit (203) of the user terminal (20) specifies, in second and subsequent slots, the existence of Additional DMRS mapping and the mapping position on the basis of the aforementioned rules.

Abstract: A user equipment communicating with a base station in a wireless communication system including the base station and the user equipment, the user equipment including: a storage unit configured to store correspondence information where an identifier of a beam formed by the base station and configuration information used for transmission of a random access signal are associated with each other; a selection unit configured to select a specific beam on the basis of reception quality of signals transmitted from the base station by using a plurality of different beams and select configuration information corresponding to the specific beam on the basis of the correspondence information; and a transmission unit configured to transmit the random access signal to the base station by using the configuration information selected by the selection unit.

Abstract: The present invention is designed to measure and/or report CSI (Channel State Information) of a plurality of narrow bands, even when the band to use is limited to a partial narrow band in a system band. According to one aspect of the present invention, a user terminal, in which the band to use is limited to a partial narrow band in a system band, has a receiving section that receives information related to CSI (Channel State Information) measurement in a narrow band, a measurement section that measures CSIs in a plurality of narrow bands based on the information related to CSI measurement, and a transmission section that reports the measured CSIs.

Abstract: A user terminal (20) is provided with: a reception unit (202) which receives a downlink signal containing a demodulation reference signal; a control unit (203) which separates the demodulation reference signal from the downlink signal; and a channel estimation unit (204) which calculates a channel estimation value using the demodulation reference signal. The demodulation reference signal is mapped to a resource element defined for a transmission pattern for a user terminal, and the transmission pattern for a user terminal is selected from among a plurality of transmission patterns for user terminals, so as to be different among the user terminals, and the demodulation reference signals to be mapped to the respective resource elements defined for the plurality of user terminal transmission patterns are configured to be mutually orthogonal to one another among the different user terminal transmission patterns.

Abstract: The present invention provides a user equipment in a wireless communication system in which communication is performed using an anchor carrier and a different carrier from the anchor carrier, the user equipment being an NB-IoT terminal, the user equipment comprising: a transmission and reception unit that performs transmission and reception of a message in a random access procedure with a radio base station; and a control unit that configures a carrier signaled from the radio base station to be the different carrier.

Abstract: A terminal is disclosed including a transceiver that transmits or receives a transport block (TB) based on a downlink control information and a processor that applies a same symbol allocation across a plurality of slots when transmission or reception of the TB is carried out over the plurality of slots. In other aspects, a radio communication method for a terminal is also disclosed.

Abstract: A terminal is disclosed that includes a processor that determines a number of Physical Downlink Control Channel (PDCCH) candidates per aggregation level, based on information about a search space corresponding to a Subcarrier Spacing (SCS) and a receiver that monitors the PDCCH candidates in the search space based on the information about the search space. In other aspects, a radio communication method and a base station are also disclosed.

Abstract: A terminal is disclosed that includes a receiver that receives a specified signal including a synchronization signal and a broadcast channel and a controller that controls a reception of a demodulation reference signal for a downlink shared channel while assuming that the demodulation reference signal does not collide with the specified signal. In other aspects, a radio communication method for a terminal is also disclosed.

Abstract: A user terminal is disclosed that communicates in a narrow band that is narrower than a minimum bandwidth for use supported in an existing LTE (Long Term Evolution) system. The user terminal includes a receiver that receives downlink control information and a controller that controls a scheduling unit of a downlink data signal and/or an uplink data signal based on command information included in the downlink control information. A radio base station is also disclosed that communicates in a narrow band that is narrower than a minimum bandwidth for use supported in an existing LTE (Long Term Evolution) system. The radio base station includes a transmitter that transmits downlink control information and a controller that controls scheduling of a downlink data signal and/or an uplink data signal, wherein the downlink control information includes command information that is used to control a scheduling unit of the downlink data signal and/or the uplink data signal.

Abstract: Disclosed are a method for determining a hybrid automatic repeat request (HARQ) process number (HPN) allocated to downlink link (DL) data, a method for notifying a HPN allocated to the DL data, a method for allocating a HPN to DL data, a base station, and a user equipment. The method for determining a HPN allocated to DL data includes: receiving DL control information (DCI) associated with DL data; determining, according to the DCI, whether the DL data satisfies a predetermined condition; and when the DL data satisfies the predetermined condition, determining the HPN allocated to the DL data based on a HPN field and an additional field in the DCI.

Abstract: Provided is a technique that transmits data, which is transmitted without obtaining transmission permission, with low delay and high reliability. An aspect of the invention relates to a transmitter including a resource determination unit that determines whether a first type of resource has been allocated in response to the generation of a transmission event for a predetermined type of information and a transmitting unit that transmits the predetermined type of information to a receiver, using the first type of resource, without obtaining transmission permission, when the first type of resource has been allocated.

Abstract: A user terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information indicating transmission and/or reception of data, and a control section that controls activation and/or deactivation of one or more bandwidth parts (BWPs), based on a field included in the downlink control information. According to one aspect of the present disclosure, it is possible to prevent deterioration in reception quality even when PUCCHs of a plurality of UEs commonly use the same resource block.

Abstract: The invention aims to perform UL transmission in an appropriate manner even when using short transmission time intervals (TTIs). A user terminal includes a transmission section that performs the UL transmission using at least one of a plurality of TTIs contained in one subframe of existing systems, and a control section that controls allocation of an UL signal and/or an UL channel. The TTI is constituted of an even number of symbols of the existing system. The control section allocates an uplink control channel on the basis of the TTI.