Abstract: This user terminal (20) is equipped with a receiving unit (202) which receives, from a base station device, a downlink signal which includes a demodulation reference signal for a plurality of ports multiplexed in the time direction; a control unit (203) which separates, from the downlink signal, the demodulation reference signal for the port assigned to the host device; and a channel estimation unit (204) which calculates a channel estimation value using the separated demodulation reference signal. The control unit (203) specifies the multiplexing method for the plurality of ports selected on the basis of at least one of carrier frequency, propagation environment, user terminal (20) performance and base station performance, and separates the demodulation reference signal according to the specified multiplexing method.

Abstract: In order that a user can perform a random access procedure suitable for a case where a usage band is limited to a frequency block that is a part of a system band, a user terminal according to one aspect of the present invention is a user terminal with a usage band limited to a frequency block that is a part of a system band, including a transmission section that transmits a random access signal with repetition, a reception section that receives a response signal to the random access signal with repetition, and a control section that detects a repetition number of the response signal, in which the reception section receives information for detection of the repetition number of the response signal and the control section detects the repetition number of the response signal based on a repetition level of the random access signal and the information for detection.

Abstract: A terminal is disclosed including a receiver that receives information indicating one of a first Resource Block Group (RBG) configuration and a second RBG configuration by which a plurality of RBG size candidates are respectively configured, and a processor that determines a RBG size out of RBG size candidates included in an RBG configuration selected out of the first RBG configuration and the second RBG configuration. In other aspects a radio communication method is also disclosed.

Abstract: Disclosed is to properly perform communications even in the coexistence of shortened TTIs and normal TTIs. User equipment performing communications by using a plurality of CCs (Component Carriers) including at least two CCs having different TTI (Transmission Time Interval) lengths, includes: a receiving section receiving downlink control information in a first CC and a control section controlling the communication in a second CC different from the first CC, based on the downlink control information.

Abstract: A radio communication system that forms a plurality of cells including a first cell and a second cell adjacent to the first cell, including: a first communication apparatus in the first cell; and a second communication apparatus in the second cell, wherein the first communication apparatus includes a first transmitting unit that transmits a reference signal and the second communication apparatus includes a second transmitting unit that transmits a reference signal, and the reference signal transmitted by the first transmitting unit and the reference signal transmitted by the second transmitting unit are orthogonalized in the same radio resource.

Abstract: A terminal is disclosed that includes a receiver that receives, in a first cell, information indicating a measurement object including information regarding a parameter of a discovery or measurement signal. The terminal also includes a processor that performs a measurement using the discovery or measurement signal based on the information indicating the measurement object and a transmitter that transmits a result of the measurement, where when the information indicating the measurement object designates a timing that is synchronous with the first cell, the processor performs the measurement in a second cell based on the timing that is synchronous with the first cell. In other aspects, a radio communication method and a base station are also disclosed.

Abstract: Provided is a user equipment in a radio communication system including a base station and the user equipment. The user equipment includes: a reception unit that receives an instruction related to a calculation method of a channel quality indicator, which is to be reported to the base station, from the base station; and a reporting unit that reports an index of a channel quality indicator, which is calculated in accordance with the instruction related to the calculation method of the channel quality indicator, to the base station.

Abstract: To appropriately configure an SUL (Supplemental UpLink) carrier when the SUL carrier is used, a user terminal according to one aspect of the present invention is a user terminal that performs communication by using a first carrier on which at least DL transmission is performed and a second carrier on which only UL transmission is performed. The user terminal includes a receiving section that receives certain downlink control information transmitted from the first carrier, and a control section that controls UL signal transmission on the second carrier, based on the certain downlink control information. The certain downlink control information is one of a downlink control information transmitted on a certain condition without a carrier indicator field (CIF), and a downlink control information including a CIF configured independently of a CIF of downlink control information used for notification of at least DL allocation.

Abstract: A receiving apparatus is disclosed including a receiver that receives a downlink shared channel using a first allocation that supports a first allocation interval and a first allocation start symbol, and a second allocation that supports a second allocation interval and a second allocation start symbol, the first allocation interval and the first allocation start symbol being different from the second allocation interval and the second allocation start symbol, respectively; and a processor that applies a reference signal configuration type, notified by a higher layer, to a first reference signal used in a downlink shared channel that applies the first allocation, and to a second reference signal used in a downlink shared channel that applies the second allocation. In other aspects, a transmitting apparatus is also disclosed.

Abstract: A first reference signal which is referred to during demodulation of a physical control channel, and a second reference signal which is referred to during demodulation of a physical data channel are mapped in time domains in the downlink signal. The first reference signal and/or the second reference signal are/is shared by a plurality of user terminals. A demodulation/decoding unit (110) of a user terminal (20) uses a channel estimation result based on the first reference signal to demodulate and decode a physical control channel addressed to the host device. Furthermore, the demodulation/decoding unit (110) uses a downlink control signal addressed to the host device, and a channel estimation result based on the second reference signal, to demodulate and decode a physical data channel addressed to the host device.

Abstract: Disclosed is to properly perform retransmission control of a downlink signal (e.g., a downlink shared channel) in a future radio communication system. The present invention provides a user terminal comprising a reception section that receives downlink control information and a control section that determines, based on the downlink control information, a single subcarrier that is used for transmission of retransmission control information of a downlink shared channel.

Abstract: The present invention is designed to suitably mitigate the decrease in communication throughput even when type-II feedback is used. According to one aspect of the present invention, a user terminal has a control section that determines a beam pattern that shows a fixed set of beams, and determines at least one beam that is not included in the beam pattern; and a transmission section that transmits feedback information related to the beam pattern and the at least one beam that is determined.

Abstract: To transmit and receive signals in a radio communication system where communication is carried out based on different configurations from those of existing LTE systems, in accordance with one aspect of the present invention, a user terminal has a receiving section that receives a synchronization signal arranged in a first frequency domain and a broadcast channel arranged in a second frequency domain, which is wider than the first frequency domain, and a control section that controls a receiving process of DL signals, and the control section controls the receiving process on the assumption that, in at least part of given frequency domain that neighbors the first frequency domain, no DL signal is mapped or a specific DL signal is mapped.

Abstract: A wiring system includes a plurality of connectors (C1 to C9). Each connector includes a first connector housing (10), a second connector housing (20) and a connector identifying member (30). The first connector housing (10) includes an identifying member holding portion for holding the connector identifying member (30). The second connector housing (20) includes a restraint releasing portion for releasing the restraint of the connector identifying member (30) only when the first and second connector housings (10, 20) are connected properly. Each connector identifying member (30) holds identification information for distinguishing the connector to which the connector identifying member belongs.

Abstract: The present invention is designed so that the decrease of spectral efficiency can be reduced even when coverage enhancement is attempted in communication by user terminals in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. A radio base station communicates with a user terminal in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth, and this radio base station has a transmission section that transmits a downlink signal to the user terminal in repetitions, and a control section that controls transmission by applying a transmission method to use frequency hopping or a transmission method to use frequency scheduling to the downlink signal, and the transmission section transmits information about the transmission method to apply to the downlink signal to the user terminal.

Abstract: There is provided a user apparatus of a radio communication system provided with a base station and the user apparatus, the user apparatus including a determination unit configured to determine a size of a soft buffer to be secured within the user apparatus based on a total soft buffer size corresponding to a UE category of the user apparatus, a modulation scheme configured for a downlink by the base station, and a MIMO-layer number configured for the downlink by the base station; and a receiving unit configured to store data received from the base station in the soft buffer with the size determined by the determination unit, wherein the UE category includes 2 layers, 4 layers, and 8 layers as maximum MIMO-layer numbers to be supported, and the UE category includes 64 QAM and 256 QAM as the modulation schemes to be supported.

Abstract: The present invention is designed so that multiple UL signals of varying RATs are transmitted properly in non-stand-alone radio communication systems. A user terminal has a transmission section that transmits a first uplink (UL) signal of a first radio access technology (RAT) and a second UL signal of a second RAT, at different times, and a control section that controls switching between a first time, which is used to transmit the first UL signal using a first UL carrier of the first RAT, and a second time, which is used to transmit the second UL signal using a second UL carrier of the second RAT.

Abstract: In order to properly configure the SUL (Supplemental UpLink) carrier when using the SUL carrier, the user terminal according to the example of the present invention is a user terminal that performs communication using at least a first carrier performing DL transmission and a second carrier performing only UL transmission. The user terminal has a receiving section that receives UL transmission indication information reported from the first carrier, and a control section configured to control transmission of a UL measurement signal to the second carrier based on the UL transmission command information.

Abstract: A user terminal that is capable of transmitting and receiving device-to-device signals, and has a receiving section that receives system information, which is transmitted from the connecting or serving radio base station and contains at least information about the resources for transmitting and receiving the device-to-device signals, and a control section that, based on the information about the device-to-device signal transmitting/receiving resources, executes control so that the device-to-device signals are transmitted and received in a second frequency carrier, which is different from a first frequency carrier, in which the information about the device-to-device signal transmitting/receiving resources is transmitted. Thus, the increase of power consumption in D2D terminals is prevented even when a frequency carrier that does not have an expanded coverage is used as a D2D signal transmitting/receiving resource where D2D operations are executed in a network in which multiple frequencies are in use.

Abstract: The present invention is designed so that a plurality of channels can be received adequately even when the bandwidth to use is limited to a narrowband which is a part of a system bandwidth. A user terminal, in which the bandwidth to use is limited to the narrowband which is a part of the system bandwidth, has a receiving section that receives a broadcast transport block and a unicast transport block, and a control section that switches the transport block to receive depending on the RRC mode of the user terminal, and, when the receiving section receives both the broadcast transport block and the unicast transport block and the user terminal is in the RRC-connected mode, the control section exerts control so that the unicast transport block is received, based on priorities that are determined in advance.