Abstract: A communication method according to an aspect of the present disclosure includes the steps of: transmitting one piece of downlink control information for scheduling a plurality of PDSCHs having different HARQ process identification information to a terminal device (40); and receiving, from the terminal device (40), a plurality of HARQ-ACKs corresponding to the plurality of PDSCHs scheduled by the downlink control information, the plurality of HARQ-ACKs fed back at the same feedback timing or a plurality of different feedback timings, in which the feedback timings are selected in accordance with a predetermined condition.

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 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 provide a wireless link usable in a more stable manner in a situation where beam management is performed. A communication apparatus includes: a control unit that performs control such that a plurality of reference signals associated with pieces of antenna information different from each other is transmitted to a terminal apparatus; and an acquisition unit that acquires control information corresponding to at least any one of the plurality of reference signals from the terminal apparatus after a random access response in a random access procedure is transmitted to the terminal apparatus. The control unit controls following communication with the terminal apparatus on the basis of the antenna information corresponding to the acquired control information.

Abstract: A method of operating a communications device comprises: determining to transmit a first uplink signal comprising a first set of feedback indications in a first set of uplink resources; determining to transmit a second uplink signal comprising a second set of feedback indications in a second set of uplink resources; determining that the first set of uplink resources and the second set of uplink resources are located within a same time slot; transmitting only the second uplink signal instead of both of the first uplink signal and the second uplink signal, the second uplink signal comprising an indication of one or more of the first set of feedback indications; and determining that a downlink assignment index associated with the first set of feedback indications is reduced when the one or more of the first set of feedback indications are indicated within the second uplink signal.

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: A terminal device including a control unit that transmits first resource information, which indicates a radio resource available to another communication device among radio resources of which access rights are acquired by performing carrier sense, on an uplink or a sidelink.

Abstract: Provided is a communication apparatus that flexibly switches execution/non-execution of FD. The communication apparatus includes the followings: a resource allocation unit that allocates, to another communication apparatus, reception radio resources in a predetermined frequency channel and allocates transmission radio resources at least partially overlapping the reception radio resources on a time axis; and a notification unit that notifies the other communication apparatus of information regarding the reception radio resources and the transmission radio resources. The resource allocation unit further allocates transmission radio resources at least partially overlapping the reception radio resources on a frequency axis.

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 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: A communication device (40) includes a communication unit (41) and a control unit (45). The communication unit (41) monitors a physical broadcast channel (PBCH) to receive a signal. The control unit (45) determines which one of first CORESET configuration and second CORESET configuration is to be applied to perform communication based on one or more bits included in the signal received on the PBCH.

Abstract: A method and corresponding terminal device including a selector that selects, in a RACH procedure, whether to transmit a first uplink message or a second uplink message to a base station device, the first uplink message being an uplink message of a two-step RACH procedure, the second uplink message being an uplink message of a four-step RACH procedure.

Abstract: Provided are a communication device and a communication method that perform direct communication between terminals. A communication device that operates as a terminal under control of a base station, includes: a communication unit that transmits and receives wireless signals; and a control unit that controls transmission of data using a predetermined resource pool by the communication unit. The control unit determines implementation of relay communication for a packet within the predetermined resource pool on the basis of at least one of information received from the base station, information received from another terminal, or information obtained from the terminal itself, during packet reception, and performs the relay communication by using a resource secured by a transmission source terminal, the terminal itself, or the base station.

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 communication device includes a transmission unit and a notification unit. The transmission unit transmits a second signal (for example, an URLLC signal) that requires low latency severer than a first signal (for example, an eMBB signal). When the transmission unit transmits the second signal (for example, the URLLC signal), the notification unit notifies another communication device (interfering station) that transmits the first signal (for example, the eMBB signal) of a request signal containing information requesting suppression of transmission power of the first signal (for example, the eMBB signal). As a result, it is possible to satisfy a requirement of a communication mode requiring low latency.

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

Abstract: To provide a communication device capable of further improving the quality between wireless links in a communication system in which a base station device and a communication device communicate with each other. Provided is a communication device configured to be capable of floating in the air, the communication device including a control unit that receives information regarding interference with a first communication device from a second communication device, the first communication device being not a communication partner, the second communication device being the communication partner, and controls transmission on the basis of the information regarding the interference and of an altitude of the communication device.

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: A communication apparatus 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 or a ground station based on the acquired information, and a communication controller (553) executing communication control for the non-ground station when it is determined that the connected base station apparatus is the non-ground station.

Abstract: To implement low-delay and highly reliable communication in a more suitable manner. A communication apparatus including: a control unit that performs control such that data are transmitted to a transmission destination via at least any one of a plurality of channels shared in communication with each of a plurality of apparatuses; and a determination unit that determines whether or not the plurality of channels is available for transmission of the same data, in which the control unit performs control such that in a case where at least one of the plurality of channels has continued to be available for data transmission beyond a period set for the channel, data are transmitted by use of the channel.