Abstract: A wireless communication device that communicates wirelessly with another wireless communication device, the wireless communication device includes, a determination controller configured to determine whether or not an unlicensed frequency band is available, a signal generator configured to generate a first signal, and a transmitter configured to, when the unlicensed frequency band is available, transmit the first signal at different phases in a time domain using the unlicensed frequency band before starting to transmit a data signal.

Abstract: A wireless terminal for a wireless communication, the wireless terminal includes: a memory that includes a buffer configured to store uplink data, wherein the uplink data is configured to be transmitted; and a controller configured to transmit a buffer status report, the buffer status report including a first index, wherein the first index is one of a plurality of buffer status indices and corresponds to a buffer size indicating a size of the uplink data stored in the buffer, wherein the memory is configured to store a buffer status table in which a range from a minimum value of the buffer to a maximum value of the buffer is divided into a plurality of subranges, the plurality of subranges being associated with a part of the plurality of buffer status indices, and a rest of the plurality of buffer status indices are associated with one or more reserved fields.

Abstract: A wireless communication device which receives a data signal and a first control signal associated with the data signal from another wireless communication device, the wireless communication device includes a receiver configured to receive, from the another wireless communication device, a series of first frames having a first frame length through a first subband and a series of second frames having a second frame length through a second subband, the second frame length differing from the first frame length, and a processor configured to obtain the first control signal of the first frame through the first subband and the data signal associated with the first control signal of the second frames through the second subband, and specify which of the second frames includes the data signal, based on predetermined information included in the first control signal.

Abstract: A base station includes a controller configured to set a first cell supporting non-orthogonal multiple access wireless transmission for a plurality of mobile stations and generate a broadcast signal indicating that the non-orthogonal multiple access wireless transmission is supported in the first cell, the broadcast signal including a condition related to wireless quality between the base station and a mobile station, for performing the non-orthogonal multiple access wireless transmission in the first cell; and a transmitter configured to transmit the broadcast signal.

Abstract: Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.

Abstract: A coil device includes a core including a winding core portion and a flange portion provided in an end portion of the winding core portion in an X-axis direction, a coil portion formed by a first wire and a second wire being wound around the winding core portion, and a first terminal electrode formed on one end side of the flange portion in a Y-axis direction, a first lead portion of the first wire being connected to the first terminal electrode, and a second terminal electrode formed on the other end side of the flange portion in the Y-axis direction, a second lead portion of the second wire being connected to the second terminal electrode. The width of the flange portion along X-axis-direction is different between one end and the other end of the flange portion in the Y-axis-direction.

Abstract: A radio communication system includes a first radio device and a second radio device. The first radio device includes: a generator configured to generate a transmission signal sent to the second radio device; an adjuster configured to adjust timing of transmission of the transmission signal generated by the generator according to information on transmission timing; a transmitter configured to transmit the transmission signal at the timing of transmission adjusted by the adjuster; and a timer configured to measure elapsed time after the timing of transmission adjusted by the adjuster is set at given synchronization timing. The generator generates a transmission signal in which at least one symbol contains no data when the elapsed time measured by the timer is equal to or larger than a first threshold.

Abstract: A base station capable of performing wireless communication with a wireless communication device with a Grant-free method, the base station includes: a reception circuit configured to receive a first signal transmitted from the wireless communication device by using a shared radio resource allocated to the wireless communication device; and a transmission circuit configured to transmit a second signal including information regarding a radio resource used for retransmission to the wireless communication device when retransmission of the first signal is requested to the wireless communication device.

Abstract: A method implemented by a transmission apparatus configured to generate a radio signal based on second data obtained by sequentially processing first data addressed to a reception apparatus from an upper layer to a lower layer, the method includes: executing preprocessing configured to start generating the second data before an amount of radio resources to be allocated to the reception apparatus is determined; executing first processing when the amount of radio resources to be allocated to the reception apparatus is determined, the first processing being configured to generate the radio signal based on the second data which has an amount corresponding to the amount to be allocated among the second data generated in the preprocessing; and executing second processing that includes performing control such that the amount of the second data generated from the first data is below a first threshold in the preprocessing.

Abstract: A terminal device includes: a transmitter configured to transmit a scheduling request for an uplink (UL) resource; and control circuitry configured to stop an ongoing random access procedure when a media access control protocol data unit (MAC PDU) is transmitted using a configured Uplink (UL) grant other than a UL grant provided by a random access response in the random access procedure, wherein the configured UL grant indicates a resource configured prior to the ongoing random access procedure, wherein the MAC PDU includes a buffer status prior to the MAC PDU assembly.

Abstract: A radio communication device includes: a communication circuit configured to transmit and receive a signal to and from first radio communication device; and a control circuit configured to cause the communication circuit to receive a first signal in a first layer, the first signal being configured to include data in a second layer different from the first layer, and cause the communication circuit to transmit, through a first radio resource on a shared channel, acknowledgement information when the first signal from the first radio communication device is received, the first radio resource being selected from among the shared channel without scheduling information from the first communication device, the acknowledge information indicating whether the data in the second layer is normally received from the first radio communication device.

Abstract: A cylinder bore wall thermal insulator is provided to a middle-lower part of a groove-like coolant passage of a cylinder block included in an internal combustion engine that includes a plurality of cylinder bores, and insulates part of a cylinder bore wall, the cylinder bore wall thermal insulator including a rubber member that comes in contact with part of a cylinder bore-side wall surface of the middle-lower part of the groove-like coolant passage that covers one cylinder bore, or covers two or more cylinder bores, a metal base member on which the rubber member is secured, and an elastic member that is provided to the metal base member, and biases the metal base member so that the metal base member presses the rubber member against the cylinder bore-side wall surface of the middle-lower part of the groove-like coolant passage, one or more elastic members being provided to each bore-covering part of the metal base member.

Abstract: A wireless communication method is used in a wireless communication system including a first wireless apparatus and a second wireless apparatus. The method includes the first wireless apparatus receiving a first signal composed of a plurality of parts and a second signal including first information about the first signal from the second wireless apparatus and transmitting second information indicating a reception result of the first signal to the second wireless apparatus using a mode determined based on the first information included in the second signal, out of a plurality of modes in which the reception result is expressed differently.

Abstract: A re-transmission control method of downlink data to be transmitted from a radio base station to a radio terminal includes: by the radio terminal, transmitting information regarding decoding performance of the radio terminal to the radio base station; receiving the downlink data from the radio base station; transmitting a re-transmission request of the downlink data to the radio base station in a case where an error in the downlink data is detected; receiving a re-transmission configuration based on the information regarding decoding performance of the radio terminal, from the radio base station in a physical downlink control channel (PDCCH), after transmission of the re-transmission request; receiving the downlink data re-transmitted from the radio base station; and decoding the re-transmitted downlink data in accordance with the re-transmission configuration.

Abstract: A cavity (20) provided for a die body (2) at one side thereof in an axial direction includes a cavity bottom surface (21), on which a protrusion (40) jutting toward the one side in the axial direction is formed. A tip end face (41) of the protrusion (40) is configured as a flat surface extending in a direction substantially orthogonal to the axial direction and having a predetermined width (W1) in a radial direction. The predetermined width (W1) of the tip end face (41) is set to be 10% or more of a diameter (Di1) of the cavity (20) at an open end thereof.

Abstract: A radio communication device includes: a communication circuit configured to transmit and receive a signal to and from first radio communication device; and a control circuit configured to cause the communication circuit to receive a first signal in a first layer, the first signal being configured to include data in a second layer different from the first layer, and cause the communication circuit to transmit, through a first radio resource on a shared channel, acknowledgement information when the first signal from the first radio communication device is received, the first radio resource being selected from among the shared channel without scheduling information from the first communication device, the acknowledge information indicating whether the data in the second layer is normally received from the first radio communication device.

Abstract: A first communication device in a communication systems including the first communication device and the second communication device that performs wireless connection with the first communication device and relays communication with the first communication device, the first communication device includes a receiver configured to receive packets from the second communication device, and a transmitter configured to store reception confirmation packets corresponding to the packets in a buffer, perform transmission at least a portion of the reception confirmation packets stored in the buffer, and discard reception confirmation packets not to be transmitted in the transmission according to a discard ratio.

Abstract: A base station device includes: a controller configured to determine whether a calculation method for a single term among a plurality of terms included in an equation for determining a transmission power is either a first method or a second method; and a transmitter configured to transmit notification information for notifying the calculation method determined by the controller. The controller determines either the first method or the second method for first data, and determines either the first method or the second method for second data different from the first data.

Abstract: A terminal device includes: a transmitter configured to transmit a scheduling request for an uplink (UL) resource; and control circuitry configured to stop an ongoing random access procedure when a media access control protocol data unit (MAC PDU) is transmitted using a configured Uplink (UL) grant other than a UL grant provided by a random access response in the random access procedure, wherein the configured UL grant indicates a resource configured prior to the ongoing random access procedure, wherein the MAC PDU includes a buffer status prior to the MAC PDU assembly.

Abstract: A wireless communications system includes: a base station configured to switch a first state of storing to a predetermined region of control information transmitted to a terminal, a value instructing a transmission power of the terminal, and a second state of storing to the predetermined region of the control information, a value instructing number of repetitions of transmission of a same data by the terminal; and the terminal configured to switch a third state of controlling the transmission power based on the value stored to the control information received from the base station in the first state, and a fourth state of controlling the number of repetitions of transmission of the same data with a maximum transmission power by the terminal, based on the value stored to the control information received from the base station in the second state.