Abstract: A user equipment that includes a radio transceiver that performs wireless communication in an unlicensed band, and circuitry that performs RLM using downlink physical signals, measures a radio link quality, evaluates the radio link quality against thresholds Qout and Qin, indicates out-of-sync to higher layers from a physical layer, indicates in-sync to the higher layers from the physical layer, starts a first timer when the out-of-sync is consecutively indicated to the higher layers from the physical layer, and determines that a radio link failure occurs in a case where the first timer expires without consecutive in-sync indications, and the first timer is different from a second timer used to determine whether a radio link failure occurs in a wireless communication in one or more serving cells in a licensed band.

Abstract: To provide a mechanism that enables appropriate recovery when a communication error occurs in terminal-to-terminal communication. A communication apparatus including: a control unit (240) that transmits a negative acknowledgement by a sidelink in a case of failing to receive a packet transmitted from a transmission terminal (200A) by a sidelink, and transmits information for imposing restrictions on an operation of a peripheral terminal (200C) by a sidelink in association with the negative acknowledgement.

Abstract: A communication apparatus (50) includes an acquisition unit (551) acquiring information from a base station apparatus, a determination unit (552) determining whether a connected base station apparatus is a non-ground station (20) or a ground station (30) based on the acquired information, and a communication controller (553) executing communication control for the non-ground station (20) when it is determined that the connected base station apparatus is the non-ground station (20).

Abstract: A radio communication device is provided that includes a communication unit which performs inter-device communication according to carrier aggregation; and a processing unit which selects the transmission resources to be used in the inter-device communication according to carrier aggregation. The processing unit selects, as the transmission resources, carriers that are less affected by the interference based on the information related to inter-carrier interference.

Abstract: [Object] To cause the transmission efficiency of the entire system to be significantly improved. [Solution] A terminal device configured to perform communication with a base station device, including: a wireless transmitting unit configured to transmit an uplink channel using a first signal waveform or a second signal waveform on the basis of control information notified by the base station device. The first signal waveform is a multicarrier signal, and the second signal waveform is a single carrier signal.

Abstract: [Problem] Provided is a mechanism which is capable of improving wireless link quality regarding transmission from a terminal device on the ground to a non-ground station device. [Solution] A terminal device including a control unit configured to acquire information regarding a type of a base station device and control a transmission timing of a signal to the base station device on the basis of the information regarding the type of the base station device.

Abstract: [Object] Provided is a mechanism for enhancing resistance against an interference that possibly occur due to non-orthogonality of a resource in a communication system holding communication with a mixture of a plurality of communication parameter sets. [Solving Means] A transmitting apparatus holding communication using a plurality of communication parameter sets in a unit resource, and including a processing section that transmits a data signal and a reference signal generated using the parameter sets different between the data signal and the reference signal to a receiving apparatus.

Abstract: An object of the present invention is to enable flexible design depending on use cases and to further improve the transmission efficiency of the entire system. A communication device includes: an acquisition unit configured to acquire first control information and second control information relating to a plurality of resources specified by a frequency and time available for data transmission; and a control unit configured to perform control in such a manner that data is transmitted to a transmission target after a resource is arbitrarily selected from the plurality of resources on the basis of the first control information, in which the control unit controls selection of the resource from among the plurality of resources on a basis of the second control information.

Abstract: Provided is a mechanism capable of improving the transmission efficiency of the entire system in a case where dynamic resource sharing is performed. A terminal device includes: an acquisition unit that acquires first control information and second control information provided in notification from a base station device; and a reception processing unit that performs reception processing of a first data channel scheduled to a first resource, and a reference signal for demodulating the first data channel, on the basis of the first control information, in which the reception processing unit performs the reception processing of the first data channel mapped to a resource other than a second resource that is a part of the first resource in the first resource on the basis of the second control information on the assumption that the reference signal is mapped to the first resource including the second resource.

Abstract: A communication device includes: a communication unit configured to perform wireless communication; and a control unit configured to allocate respective resources for communication with a plurality of terminal devices in which at least any of bandwidths or central frequencies of channels to be used is different. The control unit allocates a first control channel to be commonly transmitted to the plurality of terminal devices to a first region overlapping between the respective channels of the plurality of terminal devices in a region in which the resources are allocated. The control unit allocates a second control channel to be individually transmitted to each of the plurality of terminal devices to a second region different from the first region.

Abstract: [Subject] To realize FeD2D communication with higher quality. [Solving Means] A communication apparatus includes: an acquisition unit that acquires, from another apparatus, information regarding a state of communication through a resource pool allocated to wireless links between at least part of a plurality of relay communication apparatuses, which are movable, and a remote communication apparatus; and a control unit that individually controls allocation of the resource pool to each of the wireless links between each of the plurality of relay communication apparatuses and the remote communication apparatus associated with the relay communication apparatus on the basis of the acquired information. [Selected Drawing] FIG.

Abstract: [Subject] To make flexible design according to a use case possible and further improve the transmission efficiency of the entire system. [Solving Means] A communication apparatus includes a communication section configured to perform wireless communication, and a control section configured to control such that information corresponding to a plurality of one-encoding units to be made a target of re-transmission is notified to another apparatus, the target of re-transmission being, from among one or a plurality of one-encoding units defined so as to include at least part of a plurality of one-encoding units included in a predetermined transmission unit, any of the plurality of one-encoding units whose reception results in failure and all of the plurality of one-encoding units included in the predetermined transmission unit.

Abstract: [Object] To enable providing a wireless access technology in a more preferred aspect irrespective of a difference in design in accordance with a use case in a communication system in which the base station device communicates with the terminal device. [Solution] A terminal device includes: a communication unit configured to perform wireless communication; and a control unit configured to perform control such that control information regarding a supported communication scheme is transmitted to an external device through the wireless communication. In a case in which a first communication scheme and a second communication scheme different from the first communication scheme are supported, the control unit associates, with the control information, a parameter indicating whether or not dual connectivity based on the first communication scheme and the second communication scheme is supported.

Abstract: Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.

Abstract: A communication apparatus (50) includes an acquisition unit (551) configured to acquire, from a base station apparatus (20) being connected, switching information including information used for wireless communication with a movably configured base station apparatus (20) to be a switching destination candidate, a determination unit (551) configured to determine whether or not to switch a base station apparatus (20) to be a connection destination, and a connection unit (553) configured to, upon determining by the determination unit (552) to switch the base station apparatus (20) to be the connection destination, execute connection to the base station apparatus (20) to be the switching destination candidate on a basis of the switching information.

Abstract: [Problem] Provided is an interference protection mechanism for communications using a transmit beam in a sidelink. [Solution] A terminal device capable of communication using any communication method classified as vehicle-to-x (V2X) includes: an acquisition unit that acquires first information relating to allocation of a resource pool that can be used by a plurality of terminal devices using the communication method and second information relating to transmit power which is associated with a beam ID of one or a plurality of transmit beams which the terminal devices use in communication using the communication method; a parameter determination unit that determines parameters relating to the transmit beams on the basis of the first information and the second information; and a transmission processing unit that performs packet transmission processing using the communication method on the basis of the determined parameters.

Abstract: [Object] To enable multiplexing configurations of a plurality of uplink control channels in a preferred mode in a communication system in which a base station device and a terminal device communicate with each other. [Solution] A communication device includes: a communication unit configured to perform wireless communication; and a control unit configured to selectively switch between a first physical channel and a second physical channel in which both conditions of the number of symbols and the number of resource blocks are different from each other and which are allocated during a predetermined period in a time direction to transmit control information to a base station.

Abstract: Provided is a transmission unit that, if transmission of a PUCCH of a first CG overlaps transmission of a PUSCH and/or a PUCCH of a second CG in a certain subframe and UCI including HARQ-ACK is transmitted on the PUCCH of the first CG, upon transmit power of the PUCCH of the first CG exceeding a first upper limit value, performs scaling on the transmit power of the PUCCH of the first CG such that the transmit power of the PUCCH does not exceed the first upper limit value, and upon the transmit power of the PUCCH of the first CG not exceeding the first upper limit value, sets the transmit power of the PUCCH of the first CG to power required for the PUCCH of the first CG.

Abstract: [Object] In a communication system in which a base station apparatus communicates with a terminal apparatus, there is provided a communication apparatus flexibly designed to address diverse use cases so as to significantly enhance the transmission efficiency of the system as a whole. [Solving Means] The communication apparatus includes an acquisition section configured to acquire information from an apparatus in wireless communication; and a control section configured to select either orthogonal multiple access communication or non-orthogonal multiple access communication for communication with the apparatus on the basis of the information acquired by the acquisition section.

Abstract: [Object] To cause the transmission efficiency of the entire system to be significantly improved. [Solution] A terminal device configured to perform communication with a base station device, including: a wireless transmitting unit configured to transmit an uplink channel using a first signal waveform or a second signal waveform on the basis of control information notified by the base station device. The first signal waveform is a multicarrier signal, and the second signal waveform is a single carrier signal.