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 base station includes a receiver and a transmitter. The receiver configured to receive, from a terminal, a handover destination notification including first identification information and second identification information, the first identification information being information for identifying a first base station as a handover destination determined by the terminal, the second identification information being information for identifying a preamble to be transmitted by the terminal to the first base station. The transmitter configured to transmit an advance notification including third identification information and the second identification information to the first base station, the third identification information being information for identifying the terminal.

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 base station device includes a processor a communicator. The processor configured to perform, when a terminal device performs wireless communication by using both a first wireless communication method that is a wireless communication method with the base station device and a second wireless communication method that is a wireless communication method with a relay device, data communication by converging the wireless communication in a convergence layer in the first wireless communication method. The communicator configured to identify, even when the relay device relays data that is transmitted and/or received by the second wireless communication method to the base station device by any of the wireless communication methods of the first wireless communication method and the second wireless communication method, a bearer in the first wireless communication method to which the data belongs, and transmit and/or receive the data.

Abstract: A base station includes a memory; a processor configured to transmit a wireless signal to a wireless terminal and to receive a wireless signal from the wireless terminal; and a controller configured to, while a radio link between the wireless terminal and the base station is disconnected, and an upper-layer connection between the base station and an upper-layer node is maintained wherein the wireless terminal uses the upper-layer connection for communication through the base station, in response to an event that one of first setting information for setting the radio link and second setting information for setting the upper-layer connection is changed, transmit setting information having been changed among the first setting information and the second setting information to the wireless terminal through the processor.

Abstract: A wireless communication method including: transmitting, from a base station, a signal in a second control channel that is used for transmitting information indicating a resource of first resource information indicating a resource of a first control channel, and receiving, by a wireless terminal, second resource information that indicates the resource of the first control channel and that is transmitted from the wireless base station before a transmission of the second control channel from the wireless base station to the wireless terminal.

Abstract: A communication device performing wireless communication with a plurality of partner communication devices, the communication device includes a communicator and a controller. The communicator configured to perform communication with a network to which the communication device is connected and a partner communication device included in the plurality of communication devices. The controller configured to cause the plurality of partner communication devices to perform uplink data communication when receiving, from the network, a control signal requesting the uplink data communication with the partner communication devices, which includes information regarding requested uplink data.

Abstract: A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.

Abstract: A communication apparatus in a communication system including a plurality of communication apparatuses, the communication apparatus includes a controller configured to, in a wireless communication with another communication apparatus, considering with power information related to a power amount of a signal to be transmitted from the communication apparatus to candidate communication apparatuses that are candidates for performing the wireless communication, calculate a transmission power amount for the candidate communication apparatuses, and perform a control such that a candidate communication apparatus for which the calculated transmission power amount is the smallest becomes the other communication apparatus for performing the wireless communication, and a transmitter configured to transmit a signal to the other communication apparatus considering with the power information.

Abstract: A terminal device has a processor and is used in a wireless communication system. The processor determines a value pertaining to a stop time of a transmission process. When the terminal device receives a first signal indicating a UL grant and then receives a second signal indicating an instruction to stop the uplink transmission, the processor counts an elapsed time since the reception of the second signal. The processor performs the uplink transmission based on the first signal when the terminal device receives a third signal indicating a restart of the uplink transmission before the elapsed time reaches the determined value. The processor performs the uplink transmission based on a grant indicated by a fourth signal when the terminal device receives the fourth signal after the elapsed time reaches the determined value, the fourth signal indicating a grant of the uplink transmission.

Abstract: A communication device that performs a random access procedure, the communication device includes a transmitter and a controller. The transmitter configured to transmit a first signal in the random access procedure and a second signal which is not a signal of the random access procedure. The controller configured to perform control so that first information included in a first subheader corresponding to the first signal is included in a second subheader corresponding to the second signal and is transmitted.

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 coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.

Abstract: A communication device that performs a random access procedure, the communication device including a transmitter and a controller. The transmitter configured to transmit a first signal which is a signal of the random access procedure and a second signal which is not a signal of the random access procedure. The controller configured to incorporate first information to be transmitted by the first signal into the second signal, and control to transmit information related to the second signal.

Abstract: A terminal device includes: a receiver configured to receive a signal including configuration information related to a scheduling request configuration associated with a logical channel; and a controller configured to control a counter associated with the scheduling request configuration. The controller controls, when the receiver receives a signal including configuration information related to a reconfiguration of the scheduling request configuration, the counter in accordance with at least one of the scheduling request configuration after the reconfiguration and a state of the scheduling request.

Abstract: A radio base station includes: a radio communicator configured to perform radio communication; and a first controller that includes a first scheduler configured to perform a first scheduling that is at least a first part of a scheduling for the radio communication; and a second controller that is coupled to the first controller via a network, wherein the second controller comprises a second scheduler configured to perform a second scheduling that is at least a second part of the scheduling for the radio communication.

Abstract: A communication device that performs wireless communication with a terminal device, the communication device includes a receiver, a processor, and a transmitter. The receiver configured to receive a measurement request from a wireless communication control device which controls communication between the communication device and the terminal device. The processor configured to measure uplink wireless channel quality with the terminal device. The transmitter configured to transmit a result of the measurement to the wireless communication control device. The receiver receives control information related to the measurement of the uplink wireless channel quality from the wireless communication control device or another communication device.

Abstract: A communication apparatus includes a radio processing unit configured to transmit or receive a radio signal; and a control unit configured to control application of retransmission control in accordance with information indicating whether or not to apply the retransmission control, the information being included in a radio signal received from another communication apparatus via the radio processing unit.

Abstract: A terminal device (200) includes a wireless communication unit (210) that receives data transmitted from a base station device (100); a reception buffer (231) that can hold the data received by the wireless communication unit (210); and a transmission control unit (222) that can perform control, in accordance with a status of the reception buffer, such that communication status information indicating a reception status of the data is transmitted to the base station device (100).

Abstract: A base station device including: a transmitter configured to transmit, for each logical channel, first data of a first type and second data of a second type; and processor circuitry configured to: omit information about a data length of the second data in a MAC protocol data unit (PDU), place a medium access control (MAC) header in front of a MAC service data unit (MSDU) of the second data, and multiplex the first data and the second data, wherein the data length of the second data is omitted from the MAC header and an R bit (reserved bit) is set in the first bit of the first octet in the MAC header.