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: A user equipment in a wireless communication system that supports D2D communication includes: a selection unit that selects a first control information resource for transmitting control information from a control information resource pool and selects a first data resource for transmitting data from a data transmission resource pool among radio resources in which the control information resource pool and the data transmission resource pool are continuously set without any limitation in a time direction; and a transmission unit that transmits control information including information that designates the first data resource by using the first control information resource and transmits data by using the first data resource.

Abstract: There is provided user equipment of a radio communication system that supports D2D communication, the user equipment including a receiver configured to receive a predetermined synchronization signal; a synchronization processor configured to perform a process for synchronizing with the predetermined synchronization signal; and a transmitter configured to transmit a synchronization signal in a subframe that is the same as that of a synchronization signal transmitted from any other user equipment when the synchronization signal transmitted from the other user equipment is received by the receiver and received power of the synchronization signal transmitted from the other user equipment is less than a predetermined threshold value, wherein the transmitter interrupts transmission of the synchronization signal for a predetermined time interval, and the receiver measures the received power of the synchronization signal transmitted from the other user equipment in the predetermined time interval.

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: To provide a technology of quickly transmitting a buffer status for a reduction of uplink transmission latency. Provided is a user equipment including: a transmission and reception unit that transmits and receives radio signal to and from a base Station; and a buffer status report transmission unit that transmits, to the base station, a speculative buffer status report indicating a buffer status that is expected in a subsequent subframe.

Abstract: A user apparatus for use in a mobile communication system that supports D2D communication, including: a signal transmission unit configured to transmit a plurality of D2D signals; and a resource selection unit configured to select, from a predetermined resource pool, a radio resource having a time resource and a frequency resource for transmitting the plurality of D2D signals, wherein the resource selection unit is configured to select the radio resource such that the plurality of D2D signals are not transmitted by a same time resource.

Abstract: A terminal is disclosed that includes a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D multiplexed with a physical data channel for D2D in a frequency domain and a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D, where a plurality of the control information for D2Ds are mapped in a wireless resource unit. In other aspects, another terminal is also disclosed.

Abstract: A transmission control technique is provided that is for a scheduling request to reduce latency in uplink transmission. An aspect of the present invention relates to a user equipment including a transceiver that transmits and receives a radio signal to and from a base station; and a scheduling request controller that adjusts a transmission period of a scheduling request in accordance with one or more scheduling request configurations in response to downlink control signaling.

Abstract: A user device in a wireless communication system supporting D2D communication, includes a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D in a wireless frame configuration in which the physical control channel for D2D and a physical data channel for D2D are frequency-multiplexed; and a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D in the wireless frame configuration in which the physical control channel for D2D and the physical data channel for D2D are multiplexed in a frequency domain.

Abstract: A user apparatus in a mobile communication system includes an allocation means that divides a message that includes control information and data into a plurality of partial messages, and allocates resources included in one or more resource pools to the plurality of partial messages; and a transmission means that transmits the plurality of partial messages using the resources allocated by the allocation means.

Abstract: The present invention is designed to allow adequate communication in a next generation communication system in which a plurality of numerologies are introduced. A control section that controls communication using at least one of a plurality of numerologies with different subcarrier spacings, and a receiving section that receives information related to numerology for use in communication are provided, and the plurality of numerologies with different subcarrier spacings are configured that one of the length of a transmission time interval (TTI) and the number of symbols per TTI is different.

Abstract: User equipment of a radio communication system that supports a plurality of types of subframes that can be configured to be any of an uplink, a downlink, or a sidelink, the user equipment including an acquisition unit that acquires type information for notifying a type of a subframe; a transmitter that transmits a sidelink signal according to a transmission and reception operation corresponding to the subframe type notified via the type information when transmitting the sidelink signal; and a receiver that receives the sidelink signal according to a transmission and reception operation corresponding to the subframe type notified via the type information when receiving the sidelink signal.

Abstract: Provided is user equipment of a radio communication system that supports D2D communication, the user equipment including a selector that selects a plurality of control information resources for repeatedly transmitting control information from a control information resource pool and that selects a plurality of data resources for repeatedly transmitting data from a data transmission resource pool; and a transmitter that repeatedly transmits the control information including information that specifies the data resources using the control information resources and repeatedly transmits the data using the data resources, wherein the selector selects the control information resources and the data resources so that a control information resource for transmitting the control information for a first time among the control information resources and a data resource for transmitting the data for a first time among the data resources are in a same subframe.

Abstract: A user apparatus is provided. The user apparatus is used in a mobile communication system in which D2D communications are supported. The user apparatus includes an obtaining unit configured to obtain from a base station control rules including predetermined communication methods applied to corresponding user apparatus types; a determination unit configured to determine which of the predetermined communication methods is to be applied to the user apparatus by comparing a type of the user apparatus and the control rules; and a transmission unit configured to transmit a D2D signal based on the determined predetermined communication method.

Abstract: A user equipment that is provided in a wireless communication system including a base station and the user equipment includes an acquisition unit that acquires information indicating a resource position where a downlink data channel is mapped or a resource position where an uplink data channel is mapped in a radio frame and a timing when an HARQ response to downlink data is transmitted from the user equipment or a timing when an HARQ response to uplink data is received from the base station and a communication unit that transmits an HARQ response to downlink data received by the downlink data channel at a timing when the HARQ response to the downlink data is transmitted and receives an HARQ response to data transmitted by the uplink data channel or retransmission data scheduling information at a timing when the HARQ response to the uplink data is received.

Abstract: A user equipment that selects resources for transmitting signals based on a sensing result includes: a sensing control unit that performs control so that sensing is not performed in a predetermined time region in a sensing time window; a resource selection unit that selects resources for transmitting signals among resources in a time region in which sensing is performed in the time window; and a transmission unit that transmits signals using the resources selected by the resource selection unit.

Abstract: A user apparatus in a mobile communication system includes an allocation means that divides a message that includes control information and data into a plurality of partial messages, and allocates resources included in one or more resource pools to the plurality of partial messages; and a transmission means that transmits the plurality of partial messages using the resources allocated by the allocation means.

Abstract: The present invention is designed to provide a user terminal and a radio communication method, whereby adequate communication can be performed when contention-based UL transmission is employed. A user terminal according to the present invention has a transmission section that transmits UL data and a reference signal without a UL transmission command from a radio base station, and control section that controls transmission of the UL data and the reference signal, and the control section applies a reference signal that can identify the user terminal, as the reference signal, and controls transmission of the UL data and the reference signal by using predetermined resources that are configured in advance.

Abstract: A user apparatus in a radio communication system that supports D2D includes: an acquisition unit configured to acquire radio parameter information including a D2D radio parameter managed in a unit of a predetermined region including a plurality of cells from a base station; and a communication unit configured to transmit and receive a D2D signal using the D2D radio parameter in the predetermined region.

Abstract: There is provided user equipment of a radio communication system that supports D2D communication. The user equipment includes a storage that stores a Gap pattern indicating a Gap period repeatedly configured in a radio resource for UL; and a transmitter that transmits a signal of D2D communication in a Gap period indicated by the Gap pattern stored in the storage.